US1593864A - Machine for making metal box-rim strips - Google Patents

Description

July 27 1926. 1,593,864

' c. BURNHAM MACHINE FOR MAKING METAL BOX RIM STRiPS Filed may 25, 1925 6 Sheets-Sheet 7 02' M mw i July 27 1926.

'c. BURNHAM MACHINE FOR MAKING METAL BOX RIM STRIPS 6 Sheets-Sheet 2 Filed May 25, 1925 v 1,593,864 c. BURNHAM MACHINE FOR MAKING METAL BOX RIM STRIPS Filed May 2 1925 e Sheets-Sheet a a zlwuentoz July 27 1926.

C. BURNHAM MACHINE FOR MAKING METAL BOX RIM STRIPS e Sheets-Sheet 4 Filed May 5, 1925 July 27 1926.

C.BURNHAM MACHINE FOR MAKING METAL BOX RIM STRIPS .6 Sheets-Sheet 5 Filed May 25 192 July 27 1926.

C. BURNHAM MACHINE FOR MAKINGMETAL BOX RIM STRIPS Filed May 25, 1925 6 Sheets-Sheet 6 gwumtoz Patented July 27, 1926.

warren starts QFFlfiE. A

MACHINE FOR MAKING METAL BOX-RIM STRIPS.

Application filed May 25, 1825. Serial No. 32,814.

This invention has relation to that type of machineillnstrated in my former Patent No. 1,15%,610 elated September 28, 1915, and the object of the invention is to simplify and 5 improve the structure for crimping, shaping anc severing the rim-band or binder. The present machine is devoted to bending the thin metal strip into channel form and in severing it into lengths for use in the boxmaking mechanism proper, which latter mechanism is not herein illustrated. One -.::ainple of the box-making machine is illustrated in the aforesaid patent, and another is illustrated in my copending application Serial No. 46,872, filed July 29, 1925.

In the drawings Fig. 1 is a side elevation of my appara tus;

Fig. 2 is a vertical sectional View on the line. 2-2 of Fig. 1;

Fig. 3 is an enlarged partial ide elevation of the machine;

Fig. 4 is a detail view of the entrance guide;

Fig 5 is an enlarged vertical sectional view taken through the press;

F ig. 6 is a vertical sectional view on the line 6-45 of Fig. 1;

7 is an enlarged vertical sectional 39 vie v sl'iowing the crimping dies;

8 is a plan view of aportion of the feeding and guiding mechanism;

Fig. 9 is a side elevation of the devices shown in Fig. 8;

F 9 is a detail view of the device for bending the crimped band;

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Fig. 10 is a transverse sectional Viewthrough part of the cutter mechanism;

11 is a vertical sectional view on the line 11--11 of Fig. 9;

Fig. 12 is a side elevation of the cutting mechanism 13 is a section of Fig. 12 on the line 13 13; Fig. 14: is a front elevation of the cutter mechanism Fig. 15 is a section on the line 15-15 of F ig. 12;

Fig. 16 is a. plan view of the mechanism shown in Fig. 1;

Fig. 17 is a detail view of the cut-01f band blank;

Fig. 18 is a diagrammatical view show- Fr ing the operation of the bender. 0:)

The narrow thin metal band 20 out of which the binder is made is drawn off a reel (not shown) by means of two feedrollers 21 and 22, the upper roll being run by friction generated by clamping action of the two rolls on the band, and the lower one being driven by a belt 23 which in turn is driven by a pulley 24- aflixed to the main driving-shaft 2-5. v

The upper teed-roll 21 is pulled resiliently toward the companion roll by means of a contractile spring 26 connected at one .end to the frame. oit'the machine and at the other end to a goose-neck hand-lever 27, the gooseneslr of this handle being pivotally connected at 28 to an upstanding frame 29 which, at its lower end, is pivotally connected by means of a bolt 30 to an adjacent stationary part of the frame. The spring 26 is connected to the hand-lever by means of a pivotal link 31, and this point of connection is below the pivot 28 when the wheels are in feeding position, as shown in F ig. 1, and the grasping-end of the handle is pointing downwards. In this way, the spring 26 is caused to resiliently draw the teed-roll 21 toward its companion roll, the shaft 32 of the movable feed-roll being journaled on the aforesaid frame 29. To stop the feed by throwing ofi the feed-roll 21, it is simply necessary to throw handle 27 upwardly, whereupon the spring passes across cen ter 28 and thus allows the spring to contract and the frame. 29 to'swing downwardly and outwardly to non-feeding position. The downward limit ot the swing of the frame 29 may be arrested by means of a lug 33 on the frail 1e29, which lug may strike against the adjacent part of the frame of the machine, A stationary guide 34 is afiixed to the frame of the machine to prevent escape of the. band 20 from between the feed-rolls, and an additional guide 3 1 of tubular form is carried by the part 29 of frame 29. This guide 34; is made in two parts divided longitudinally and vertically, one of the parts 34- being adapted to swing away from the other part to thus open the tubular guide and thus permit ready removal of the rim-band from the guide. Movable section 34- is pivoted at 35 to the stationary section, and this movaole section is latched in position by a pivoted latch 36.

From the continuously-running feed-rolls 2122, the band passes to the crimping or pressing apparatus, consisting of an upper stationary head 37 ano a lower reciprocating head 38, by which the band is crimped, in lengths, to form the strip into a longitudinal channel. This crimping press operates intermittently, and the band is intermittently drawn through the press, length by length, by means of a pair of intermittently-operating feed- rolls 89 and 40. By reason of the fact that the main feed-rolls 2122 are continuously-operated and the press and other mechanisms are operated intermittently, a slack in the binding-strip necessarily occurs between the main feed-rolls and the entrance-end of the press. It is necessary, for economys sake, that the feed-rolls 39-40 shall operate quickly, much faster than the main feed-rolls 2122. This slack is formed into an upstanding loop; being kept taut by running over a pulley 41 which is resiliently pulled upwardly during the entire operation of the machine by means of a contractile spring 42 which actuates an arm 43 carrying the aforesaid pulley. With this constantly-operating resilient slack-take-up, the band is continuously kept in a taut condition and yet in condition to be readily drawn into the press from time to time by the intermittentlv-operating feed-rolls 39- 40. To arrest the arm 43 in case the band breaks or the intermittent feed stops, 1 provide an arresting-stop or abutment 44.

The lower head 38 of the press is reciprocated in suitable guideways by rods 45 actuated by cams 46 affixed to the main shaft 25. These rods 45 are connected to the head 38 by means of a shaft 47 journaled in depending lugs 48 on the head. The connection of the shaft 47 to the rods 45 is by way of eccentrics 49 aiiixed to said shaft 47 and working in straps on the upper ends of the rods 45. When the eccentrics are turned down, as shown in dotted lines in Fig. 3 and in full lines in Fig. 2, the head 38 is at its uppermost limit with respect to the operatingcams 46 and is thus in working position. To drop this head enough to release the lower member of the crimping devices from the upper members of the crimping devices, as more fully hereinafter set forth, it is simply necessary to give the shaft 47 a half turn to bring the eccentrics to the upper side. This may be done by means of a handle 50 afiixed to said shaft and latched in its working position by means of a latch 51. By swinging the latch 51 to one side. the arm 50 may be swung outwardly and downwardly to thus reverse the eccentrics and lower the cross-head to a position, as stated. where the lower member of the crimping device may be examined and removed conveniently.

The lower or plunger-member of the crimping device consists of a thin plate of steel 52 which runs the full length of the crimping-press and is removably anchored to the head 38 by means of a bed-plate 53 bolted to said head and to which the plungerstrip is secured. The plunger-strip is clamped to the bed by means of a series of bolts 54 and a clamp-bar 55. For the pur pose of pressing and stiffening the thin '5 crimping-plate 52, I clamp to the opposite sides thereof fiat steel plates 56 which are clamped against the crimping-plun 'er by means of the bar 55. These stiflenin; plates 56 are of less width than the erimpii strip 1 52 and terminate short of the upper edge thereof for the purpose hereinafter set forth.

The under side of the stationary head 3 is provided with a groove extending its full length, and in this groove is clamped, by means of bolts 62, a pair of bars 58, each carrying on its inner face a die-bar 59.

1119 bars 58 and the die-bars 59 form between their inner faces a longitudinal channel through which the binder-band 20 runs and m up into which the plunger-member of the die extends. For the purpose of nicely set ting the die-members, I provide, in addition to a series of bolts 57, a series of set-screws 60, which latter are threaded into the 11; .d 37 and abut against the outer faces of the die-carrying bars 58.

The die-bars 59 extend the full length of the press, but need not necessarily be continuous bars; they may be, and preferably are, made in sections. They are dove tailed in cross-section and fit in correspondinglyshaped grooves in the inner faces of the carrying-bars 58. They are removably clamped in the dove tail grooves by forming on the lower edges of each of the carryingbars a spring-j aw 61 actuated by the aforesaid long vertical bolts 62 extending down through the head 37 and the main body of the bars 58. These spring jaws are desirb5 ably formed by forming a horizontal kerf 62 in the bars 58. In this way, the die-bars 59 will be rigidly clamped in position and yet may be readily slipped out of the pre endwise for inspection and repair, by simpl loosening the bolts 62.

The plunger-member of the press is guided in its reciprocatory movement within the die channel by means of thin wear-plates attached to the aws 61, these wear-plates ex tending up into the die channel to near the top edge thereof. The upper edges of the die-bars 59 are thicker than the lower p. J thereof to form a narrow channel along upper, facing edges of the die-bars. Thus thickening the die-bars at this point forms a pair of downwardly-facing shoulders (34, under which the binding-strip runs, as shown particularly in Fig. 5. In operation, when the plunger-member of the die is raised, the blank strip is folded and pushed up into the narrow part of the die channel, as shown particularly in Fig. 7. To eject the shaped binder-strip from the shaping channel, I provide an ejectorplunger 65 which extends the 1 full length of the press and depends through the space between the inner faces of the diecarriers 58 and the die-bars 59. This ejector-plunger is carried by a bar 66 working in a guide-slot in the head 37 and being normally pressed downwardly by means of a series of coil-springs 6? housed in a cylin drical casing 68 mounted on the head 37. l l ith this constantly-operating ejector, it will be seen that after the binding-strip is channeled and the shaping-plunger has receded, the ejector will force the shaped binding-strip out of the shaping-channel and down into the wider part of the die-channel, thus leaving the shaped binder-strip in con dition to be pulled out of the press by the intermittent feed-rolls.

The feed-rolls 39 and 4.0 are respectively flanged and grooved tofit the channeled band as it comes from the press. The lower roll 10 is intern'littently rotated through the medium of a pinion 7O rotatably mounted on its shaft and which engages rack-bar 71 suitably guided on the frame of the machine and actuated through the medium of a link 72, a lever 7 3 and a cam 7st affixed to the main shaft 25. The parts are timed to move the rack bar upwardly and thus give a feeding action to the feedrolls immediately after the cri1npingpress has made a crimping operation. The two feed-wheels 39 and 4.0 are geared together so as to operate in unison. Motion from the pinion to the feed-wheel is obtained through the medium of a bar 75 aliixed to the pinion and carrying a pawl 6 at each of its outer ends, these pawls engaging an internal ratchet-wheel on the gear.

To prevent backward rotation of the feedwheels when the rack-bar descends and the pawls are thereby run backwards over the ratchet-teeth, I provide a brake-band '7? arranged to work on the periphery of the feed wheel l0 and resiliently held thereagainst by means of an adjustable spring device 78. This brake acts constantly on the feed-wheel, so that during the feed operation power must overcome the friction of this band; the friction, however, is sufficient to prevent impingement of the pawls against the ratchet from turning the feed-wheel baekwardly.

The upper feed-wheel 39 is held resiliently against the lower feed-wheel by means of a retractile coilspring 79 which connects a pivoted frame 80, in which the feedwheelis journaled, to a convenient part of the main frame, a thumb-nut 81 being provided for regulating the tension of this spring. The frame is pivoted at 82. This frame may be swung upwardly to separate the feed-rolls and hold them in separated position by means of a cam 83 arranged under one arm of the frame 80 and affixed to a shaft 84 journalled in the frame of the machine, H is shaft being provided with a handle 85 for rotating it. By turning the cam half way around, the frame 80 will be elevated and be held in its raised position.

After the crimped band leaves the intermittent feed-rolls, it passes through a guide embodying a longitudinally-split tube 86, the

halves of this tube being respectively mounted in grooves in the adjacent faces of two plates 8'? and 88 set vertically edgewise and locked together by the following means: The upper edges of these plates are locked together by a clamp 89 pivotally mounted on one of the plates by means of a screw 90. The lower edges of these plates are held movably together by means of a latch 91 pivotally mounted on the frame and adapted to be held against the lower edge of the plate 8? by means of a spring 92. The clamp 89 and the latch 91 serve to clamp the two plates together in such manner that they may be readily disconnected to thereby enable the tube 86 to be removed and opened, thus enabling the crimped band to be removed from the machine whenever it becomes necessary to do so by reason of breakage or entanglement. The plate 87 is provided with two handles 93 for conveniently manipulating it. The plate 88 is held in any suitable manner against an abutment 94 affixed to an adjacent part of the machine frame.

After the crimped strip passes down through the tubeguide 86, itis received by another guiding and holding device embodying a lower bar 95 and an upper bar 96, theupper bar being pivoted at 97 to swing upwardly and the lower bar being pivoted at 98 to swing downwardly. The lower bar is shaped to fit into the crimpeol strip and the upper bar is shaped to lit down over the crimped strip. The lower bar is forced normally upwardly against the crimped strip by means of a spring device 99 made adjustable by means of a thumb-nut 100 to regulate the pressure up against the crimped strip.

The upper guide-bar 96 is held down against the crimped strip by means of a setscrew 101 carried by an arm 102 pivotally mounted on the upper end of a bolt 103. By swinging the arm 102 laterally, the setscrew 101 will be shifted ofi the top edge of the bar 96 and thus free the same, permitting it to be raised to a position out of the way to enable the crimped strip to be removed from the machine, this ready removal of the strip from the machine being desirable because of the fact that occasionally the strip becomes entangled in passing through the machine, necessitating the stoppage of the machine to remove the strip. To look the arm 102 in its operative position, shown particularly in Fig. 10, I provide a spring-actuated latch 10 i pivotally mounted on. the arm and adapted to engage in a notch in the head of the stationary bolt 103.

Closely adjacent to the clamping guide 9596 is arranged a cutting appliance which operates during each dwell in the ravel of the crimped strip. This cutting appliance consists of an upper verticallymovable cutter-blade 105 and a stationary cutter 106 mounted on an adjacent part of the machine. The outer free end of the clamping guide member extends in under the cutter-blade 105, so that the crimped strip is supported by said member 95 during the cutting operation, said member 95 yielding downwardly when the cutter is forced downwardly in its cutting stroke. After the cutting operation, the crimped strip 20 is brought back to a position to pass over the stationary cutter 106 when the strip is again fed forwardly. The cutter 105 is adjustably mounted on an arm or bar 107 pivotally mounted on a pivot- 108 at one end and pivotally connected at its other end, by a pivot- 109, to a vertical rod 110 actuated from the cam-shaft by means of a cam 111. operating through an angle-lever 112.

The cutter-blade is fastened in place against the side of the bar 107 by a clip 113; and it is vertically set by means of a setscrew 114 mounted in a block 115 bolted to the top edge of the bar 107. For the purpose of adjusting the cutter-bar 107 endwise to thereby accurately set the cutter, the pivot-pin 108 is mounted eccentrically in a stub-shaft 116, which is rotatably adjustable on an adjacent part of the frame. By rotating the stub-shaft 116, the eccentric pin 108 will be adjusted toward or from the path of the crimped strip. A convenient way of rotatively adjusting the short shaft 116 is to provide the outer end of the pivot 108 with a squared end 117 to receive a wrench; and to hold the shaft 116 in its rotated position, a set screw 118 is employed.

It is necessary to clamp the crimped strip 20 down on the stationary cutter 106 during the cutting operation. To accomplish this device, I provide a clamp-foot 11.9 which is mounted on a bar 120 lying along side and in contact with the cutter-bar 107. This clamp-carrying bars is mounted on the same pivot as the bar 107 and it is connected to said bar, so as to move in unison therewith by a spring device at its outer end, this spring device consisting of a rod 121 carried by the bar 120 and projecting up through a l acket- 122 upstanding from the bar 107. A coil-spring 123 surrounds this rod and by its expansib' tends to resist independent upward movement of the bar 120. Downward movement of the bar 120 is resisted by set-screw 12 1 carried by the clamp-foot 19, and the upward limit of its movement restricted by an extension 125 formed at the lower end of the clamp-foot 119, this extension extending in under the lower edge of the bar 107. The set-screw 12 1 and the extension 125 are set so as to allow a slight independent movement of the bar 120, for a purpose hereinafter described.

It will be observed that when the cutterar pulled down by the rod 110, the lower face the clamp-foot 119 will come against l e upper face of the cutter-anvil 106, and, by reason of the spring action, will resiliently clamp the strip 20 against the cutterend during the cutting operation. Of course, the bottom edge of the clamp-foot and the top surface of the cutter 106 are shaped to fitthe crimped strip 20, except that the groove in the clamp-foot and the thickness of the cutter 106 are slightly increased with respect to the channel in the slip, so that the act of clamping the strip against the anvil-cutter 106 will spread the same at that point. This spreading of what will be, in the subsequent handling of the strip in the box-making part of the machine, the tail-end of the blank is, for the purpose of facilitating the overlapping of the ends of the blank strip when it is folded into 8. rec angular frame for crimping the b0X-rim, as set forth in my aforesaid patent and, my aforesaid copending application.

The slight lost-motion arranged for between the two bars 107 and 120, above Set forth, is for the purpose of giving the presser-foot 119 a smart blow immediately after the cutting operation. This is brought about by the bottom edge of the bar 107 (see Fig. 15) striking against the under X- tension 125 of the presser-foot after the. cutter has made the severing operation. This s1 iart blow on the presser-foot is permitted by the compression of the spring 123. This smart blow on the spread end of the blank strip serves to fix the spread previously formed by the presser-foot and the cutter 106. It will be observed, therefore, that the two bars 107 and 120 act as a unit except for the slight independent yield the bar 120 is permitted during the cutting and tamping operating.

Adjustment of the bar 107 by bodily rotating the eccentric pivot-pin 108 also adjusts the bar 120. It is desirable, however, to provide for an independent longitudinal adjust-' ment of the bar 120. This is done by mounting another eccentric 126 upon the pivotpin 108 and pivoting the bar 120 on this eccentric. By rotating this eccentric, the bar 120 is given an independent endwise adjustment. The eccentric may be rotated by means of a handle 127, a keeper 128 being employed to hold the eccentric and handle in position. The lower-anvil-cutter 106' is mounted on a slidable block 129, and this block is adjusted through the medium of a set-screw 130 and rod 131 arranged at one end of the block 129; and at the other end of the block 129 an abutment set-screw 132 is arranged. A SciI-SC1C6W 133 serves to clamp the anvil-cutter 106 in place against the abutment on the block 129.

It will be understood that the bolts 57 pass through holes. in the head 37 and into threaded sockets in the die-carrying bars 58, so that by means of these bolts the bars 58 may be moved inwardly and outwardly with respect to the channel; and when thus accurately adjusted the barsv 58 may be held against disturbance of the adjustment by means of the set-screws 60 which are threaded through the head 37 and have their inner ends in abutting relation to the bars 58. It will also be observed that the flat guide-plates extend far enough up into the diechannel to support the strip 20 in passing through the die-channel, thus preventing this strip 20 from twisting, keeping it always in position for proper and accurate operation of the channel plunger 52. It will be observed also that the adjustment of tension of the springs 67 is secured in each casing 68 by means of threaded set-screws 67 tapped down into the upper end of said casing 68; and that the springs 67 act upon the ejector-bar 66 through the medium of rods 67 which pass up through the springs 67 and are guided at their upper ends by a passage through a central hole in the screw plug 67; in this way, a substantially even and constant pressure may be maintained on the ejector-bar 66.

At a point between the intermittent feedwheels 39- 10 and the crimping-press, I 10- cate a strip-bending appliance consisting of a. horizontal shaft 13st journalled in a tubular part 13 1 of the frame and having its in-' ner end adjacent to the path of the blank strip. The inner end of the shaft 134: is provided with a head 134! and its outer end is provided with a handle 136, this handle being affixed to the shaft and having a pointer which works over a scale-plate 13 1' affixed to an adjacent part of the frame. On the head 13 1" is mounted a pair of rollers 135 and 135"arranged respectively above and below the strip and having their respective peripheries shaped to fit the crimped strip. One of these rollers is located nearer to the feed-rolls than the other, and in practice the shaft 131 is so adjusted as to cause a slight bite or bend in the strip as it is passed between these rollers 135135. The friction of the shaft 134 in its long bearing is suflicient to hold the rolls in their adjusted position, as there is not sufficient strain to exert any considerable pressure on the rolls, the band being of thin metal; i The bending rolls 135-135 are located sufficiently near the feed-rolls to impart to the band astress or bending strain that will, when the strip is finally cut into lengths, give to each blank a tendency to curve slightly from end to end, as shown in Fig. 17. This slight curvature in the blank is helpful in bringing its ends together in overlapped relation when the strip is subsequently formed by the box-making mechanism. This curvature in the blank tends to swing the ends of the strip slightly upwardly when the blank is bent into rectangular form, as shown in dotted lines in Fig. 17. This facilitates the overlapping and interlocking of the ends of the blank. The right-hand end, Fig. 17, is sprung downwardly and snapped under the other end, the other end being, as heretofore described, slightly spread to facilitate the reception of the opposite end of the band. This spring in the right-hand end of the band, as stated, facilitates and insures the proper interlocking of the ends, or, rather, renders this interlocking ofthe ends feasible by means of a very simple mechanism, as disclosed in my aforesaid copending application Serial No. 16,872. a

What I claim is 1. In a machine of the class set forth, a pair of continuously-running feed-rolls and means for positively driving one of these rolls, spring means for pressing the other roll toward the positively-driven roll embodying a swinging frame, a spring actuating said frame, and a handle pivotally attached to said frame and to said spring adapted to be swung to a position to relieve saidframe of the action of said spring.

2. In a machine of the class set forth, a pair of feed-rolls, a swinging pivoted frame on which one of the rolls is journaled, a goose-neck hand-lever pivotally connected to said frame, and a retractile coil-spring connected to said goose-neck hand-lever, for the purpose set forth.

3. In a machine of the class set forth, a pair of feed-rolls for feeding a binder-strip, a swinging pivoted frame on which one of the rolls is journaled, a goose-neck handlever pivotally connected to said frame, and a retractile coil-spring connected to said goose-neck hand-lever, said swinging frame carrying a tubular guide for the binder-strip to be fed.

1. In a machine of the class set forth, a crimping-press embodying a reciprocating head, a stationary head carrying dies and having a die-channel, and a thin crimpingplate carried by the reciprocating head, additional bracing and stiffening plates on opposite sides of said crimping-plate terminating short of the upper, working edge of the crimping-plate, said die-channel being provided with removable wear-plates for sliding contact with the outer faces of said stiffening plates.

5. In a machine of the class set forth, a band-crimping-press embodying a reciprocating movable head carrying a crimpingplate, a stationary head carrying a pair of die-bars forming a crimping-channel through which the band to be crimped passes, these bars being thicker at their upper edges to narrow the channel at that point and to form downwardly-facing foldingshoulders, a spring-actuated ejector being provided for ejecting downwardly the crimped-band.

6. The structure recited in claim 5, said spring-actuated ejector embodying a plate extending the length of the press and down into the channel between the die-bars.

7. The structure recited in claim 5, said spring-actuated ejector embodying a plate extending the length of the press, a bar working in a vertical guide-slot in the head, and a series of adjustable springs for normally pressing said guide-bar downwardly.

8. In a machine of the class set forth, a crimpingpress embodying a stationary head having a die-channel, a pair of bars removably bolted to the head to form said diechannel, each bar having a dovetail groove in its inner face, a die-bar in each of these grooves shaped to fit the same, each of said die-carrying-bars being provided with an adjustable spring-jaw to clamp said die-bar removably in place.

9. In a machine of the class set forth, an intermittently-operated crimping-press embodyinga stationary head having a downwardly-facing crimping-channel, a reciprocating head embodying a crimping-member extending up into said channel and means for reciprocating the same, said means embodying a pair of cam-actuated rods, a rockshaft pivotally connecting the upper ends of the rods to the reciprocating head, eccentrics for connecting the rods to the reciprocating head, so that by rotating the rock-shaft the head may be dropped down to bring the crimping-member out of the crimping-channel.

10. In machine of the class described, a continuous feeding mechanism, a crimpingpress intermittently operated, and an intermittently-opcrating feeding mechanism arranged at the exit-end of the press embodying a pair of superposed feed-wheels, means for actuating them in one direction embodying a pawl and ratchet mechanism operating on the lower feed-wheel, and a continuouslyoperating brake operating on the lower feedwheel.

11. In a machine of the class described, a continuous feeding mechanism, a crimpingpressintermittently operated, and an intermittently-opcrating feeding mechanism arranged at the exit-end of the press embodying a pair of intermittently-operating superposed feed-wheels, an upwardly-swinging frame carrying the upper feed-wheel, an ad justable spring means for regulating the pressure of the upper feed-wheel upon the rear lower feed-wheel, and means for elevating the upper feed-wheel and holding it out of operation.

12. In a machine of the class described, means for forming a crimped strip, a guide for the crimped strip embodying a longitudinally-split tube, a pair of plates each removably carrying half of said tube, and means for detachably clamping the plates and the tube halves together, for the purpose set forth.

13. In an apparatus of the class set forth, a crimping-press intermittently operated and embodying a movable crimping-member, intermittent feed mechanism for withdrawing a crimped blank strip longitudinally from the press, and a strip-bending device arranged between the press and the feeding mechanism, and arranged to operate during the withdrawal of the crimped blank from the crimping-member to sli htly curl the strip.

14. In an apparatus of the class set forth, a crimping-press intermittently operated and embodying a movable crimping-member, intermittent feed mechanism for withdrawing a crimped blank strip from the press, and a strip-bending device arranged between the press and the feeding mechanism, said strip-bending device consisting of an adjustable bending-pin adapted to be engaged by the strip blank continuously during the movement of the strip blank by the feed mechanism.

15. In a machine of the class set forth, mechanism for crimping a strip, mechanism for intermittently feeding a strip from said crimping mechanism, a reciprocating cutter and means for actuating the same, and a clamp-guide embodying two clamping members embracing the strip, one of these clamping members being yieldable and being exended to a point close to said cutter.

16. In a machine of the class set forth, mechanism for crimping a strip, mechanism for intermittently feeding a strip from said crimping mechanism, a reciprocating cutter and means for actuating the same, and a clamp-guide embodying an upper and a lower clamping member embracing the strip, the lower one of these clamping members being adapted to swing resiliently downwardly at its free end adjacent the cutter, and the upper one being adapted to swing upwardly out of the Way to thereby open the clamp, means being provided for removably locking the upper member down on the lower member.

17,111 a machine of the class set forth, means for crimping and feeding and guiding a strip, and means for severing the crimped strip embodying a lower stationary cutter, an upper movable cutter, and a resiliently-held clamp-foot for holding the blank strip against the lower stationary cutter dura I 3 A mg the severing operation, the stationary cutter and the clamp-foot being shaped so as to spread the crimped or channeled blank at the point of clamping.

18. In a machine of the class set torth, means for crimping and feeding and guiding a strip, and means for severing the crimped strip embodying a lower stationary cutter, an upper movable cutter, and aresiliently-held clamp-foot for holding the blank strip against the lower stationary cutter during the severing operation, the stationary cutter and the clamp-foot being shaped so as to spread the crimped or channeled blank at the point of clamping, means being provided whereby after the blank strip is spread the clamp-foot will be given a sharp blow to thereby fix the spread.

19. In a machine of the class described, a cutter embodying a vertically-reciprocating cutter-carrying member, a stationary anvil-cutter, a. clamp-foot and a carrier therefor, resilient means for connecting said two carriers constructed to permit a limited independentmovement of the clamp-toot carrier, the parts being so constructed as to impart a sharp blow to the clampi00t after the severing operation.

20. In a machine of the class described, a cutter embodying a verically-reciprocating cutter-carrying member, a stationary anvilcutter, a clampfoot and a carrier therefor, resilient means for connecting said two carriers constructed to permit a limited independent movement ol? the clamp-toot carrier, the parts being so constructed as to impart a sharp blow to the clamp-foot after the severing operation, means being porvided for independently adjusting the aforesaid two carriers.

21. In a machine of the class described, a cutter embodying a vertically-reciprocating cutter-carrier niember, av stationary an- ,vil-cutter, a clamp-foot and a carrier therefor, resilient means for connecting said two carriers constructed to permit a limited independent movement of the clamp-toot car rier, the parts being so constructed as to impart a sharp blow to the clamp-toot after the severing operation, means being provided for independently adjusting the afore said two carriers, said latter means embodying a rotatively-adjustable shaft carrying an for drawing a crimped strip out of the head,

and an intermediate combined guide and bending device embodying a pair of rollers grooved to conform to the shape of the strip,

one operating above the strip and the other below, and means for simultaneously adjust ing these rollers toward or from the strip, for the purposes set forth.

In a machine o1 the class set forth, means for forming a crimped strip, a pair oi teed-rolls shaped to fit the crimped strip, and a bending appliance located adjacent to the undergoing sides of the rolls and adapted to continuously impart a bending stress to the strip as is approaches the rolls, said bending appliance embodying a pair oi rolls shaped to fit the opposite sides of the crimped'strip and carrying means adapted to adjust them toward and from the strip.

24. In a machine of the class set forth, means for forming a crimped strip, a pair 0r teed-rolls shap d to fit the crimped strip, and a bending appliance located adjacent to the undergoing sides of the rolls and adapt ed to impart a bending stress to the strip as it approaches the rolls, said bending appliance embodying a pair of rolls shaped to lit the crimped strip and carrying means adapted to adjust them toward and from the strip, said carrying means consisting of a shaft journalled in the frame and having said rolls set eccentrically with respect to the axis of said shaft.

25. In a machine of the class described, means for forming a crimped strip, a guide for the crimped strip embodying a longitudinally-split tube, a pair of plates each removably carrying half of said tube, and means for detachably clamping the plates and the tube-halves together, said means hecomposed of a pivoted keeper-member carried by one of said plates, and a springactuated pivoted latchanember adapted to engage and lock the other plate.

In testimony whereof I hereunto aiiix my sl gn ature.

CHARLES BURNHAM.

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