US1593190A - Set-up bar for slotting and creasing machines - Google Patents

Description

. July 2o, 1926. n 1,593,190

E. A. METZ ET AL SET-UP BAR FOR SLO'ITING ANDCRASING MACHINES aucune July 2o, 1926. 1,593,190

E. A. METZ ET AL SET' UP BAR FOR- SLOTTING AND CRESINGrv MACHINES Filed May '7, 1924 2 Sheets-Sheet 2 Patented July Z0, 1926.

f 1,593,190 UNITED STTES PATENT OFFICE. ,i

ELLWOOD A. METZ AND THOMAS S. FITCHETT, OF GLENARM, MARYLAND, ASSIGNORS T0 F. X. HOOPER COMPANY, OF GLENAR-M, MARYLAND, A CORPORATION OF MARY- LAND.

SET-UP BAR FOR SLOTTING AND CREASING MACHINES.

Application filed May 7,

rlhis invention relates to an attachment for cardboard slotting, creasing and cutting machines, for facilitating the adjustment of the slotting, creasing and cutting heads to operate along exact lines on the cardboard..

In setting the heads by the usual methods to make a box-blank of one form, the machine must be stopped for a considerable time while the operator, leaning over the machine, adjusts the heads independently, usually a foot rule or scale. The slotting wheels or heads on one pair of shafts must be set in a certain relation to the scoring heads on another pair of shafts and the trimming heads, for trimming the edges of the blanks, must be independently adjusted on one of the pairs of shafts. When it is 4desired to make a different blank, some or all of the heads must be again adjusted independently by the rule or scale.

The attachment of' our invention comprises a set-up bar, adapted to fit into suitable open bearings in the frame of the machine, so that it can be readily removed and replaced, and having a scale and index members, the latter adjustable along the bar and adapted to be set by reference to the scale for positioning the slot-ting, creasing and cutting heads of the machine. To set the index members, the bar may be removed from the machine and placed on a suitable support, and the index members can then be set with greater facility than if the bar were in the machine. After the members have been set to their proper positions, the bar is placed in its bearings in the machine, and lies parallel with the shafts whichcarry the slotting, creasing and trimming heads. The index members comprise hubs which can be clamped to the bar at any point and arms 0r fingers which project toward the slotting, creasing and cutting heads on theadjacent shafts. These heads can then be quickly adjusted to correspond with the positions of the index arms, and the bar may then be removed from the machine. While the machine is operating to cut blanks of one kind or size, an operator can set the index members on the bar for positioning the heads to operate on blanks of another kind or size; Thus, a large saving in the operating time of the machine is effected.

In the accompanying drawing,

Fig. 1 is a top plan View of a machine for i924. seran No. 711,645.

slotting, creasing and trimming box blanks, showing the set-up bar mounted in the machine; Y

F ig. 2 is a plan view of the set-up bar, in the position shown in vFig. l, on a larger scale and partly broken away, with some of the index members thereon; l

Fig is a side view of the bar, partly broken away, on the same scale as Fig.2; and,

Fig. 4 is an enlarged perspective view of a portion of the bar and one of the index members.

` Referring to the drawing, a represents, in

part,-a machine for slotting, creasing and trimming the box-blanks, and b represents the set-up bar which is shown mounted in the machine in F ig. 1. l indicates a shaft carrying slotting heads 2, each. head being provided with a slotting knife 3, and it will be understood that these slotting knives cooperate with grooved heads on the corresponding shaft located below the shaft 1, as usuahv the lower shaft lnot being shown in the drawing. Creaser heads 4, and heads y5, carrying trimming knives 6, are mounted upon a shaft 7, and it will be understood that co-operating heads are mounted upon a shaft below the shaft 47, but not shown in the drawing. The blanks which are to be cut and creased are fed in-to .the machine from a feed table 8' and are carried through the machine by pull rollers 9, upon shafts 10 and 11, co-operating with pull rollers on similar shafts, not shown. The machine frame is provided with open bea-rings 12, at its ends, adapted to receive theends of the set-up bar. rlhe end or bearing portions 13 of the bar which fit. in these bearings, are cylindrical and of smaller diameter than the body of the bar, and shoulders la, constituting stops,are thus formed on the bar and adapted to fit closely against the ends cf the bearings 12, so as to prevent endwise movement of the bar when it is in the machine. The bar is formed with a shallow groove 15, extending from end to end of its body portion, and within this groove is arranged a tape 16, having graduation marks reading from the center of the tape in opposite directions and indicating small fractionsof an inch, as sixteenths. The bar is also flattened adjacent the scale, as shown at17. Index members o and d are mounted upon the bar, each index member comprising a hub 18 and a clamping screw 19 which extends through a threaded opening in the hub and is adapted to bear against the flattened part 17 of the bar to clamp the hub -i-n any `desired position .of adjustment with respect to the scale. The hubs c are provided with two radially projecting arms 20 and 21, and 4the hubs cl are each provided with a radial-ly projecting arm 22. The sides 20a and 21'LL of the arms 20 and 21 are flush with one end c of the hub from which they project, and the ends of the arms 21 are cut away on their opposite sides, as shown at 21h, to reduce the extremities of these latter arms .to one half the thickness of the slotting knives. The sides 22a of the arms '22 are flush with lthe ends d of the hubs cl.

When the bar is placed in the machine, as shown in Fig. 1, the arms or lingers 21 on the hub c will project toward 'the slotting heads on the shaft 1 and the arm 20 will project toward the creasing heads on tle shaft 7 and the arms or fingers 22 on the hubscZ will project toward the trimming knives on the `heads 5.

In using the bar, the operator, with the bar removed from the machine, will space the index members c, by reference to the scale, so that the distance between their faces c will correspond with the distance between the center lines `of the slots to be. cut in the blanks, and will space the index members d so that the distance between their -faces d will be equal to the width of the blank, and will then clamp the index members vto the bar, The bar will then be placed in the open bearings 12 and the operator lwill move the slotting heads into `position to aline the sides of the slotting knives with the cutaway sides 21b ofthe `arms 21, when the sides 2,1a will lie inthe central planes of the knives. The creasing 'heads will be moved 'to aline central score marks 4a thereon with the flat sides 2Oa of the arms 20, and the heads 5, .carrying the trimming knives 6, will be adjusted by reference to Sides 22a of the arms 22 to set the knives to trim the blanks to the proper width. After the various heads bavebeen adjusted upon the shafts, the set-up bar may be removed, and, while the machine is in operation, an operator may adjust the index ,members on the set-up bar for setting the heads to different positions to form box-blanks of a different width or having differently spaced slots and creases. It will be evident that by the use of this bar, the operati-ng time of the machine may be increased and the operator will be saved considerable time and labor in adjusting the various heads.

What we claim is:

1. In a machine of the class described, the combination with a frame having a shaft and members thereon for operating on the cardboard, said members being adjustable along the shaft, of a set-up bar having a scale thereon, bearings on the machine for detac'hab'ly holding said bar parallel with said shaft and for preventing endwise movement .of the bar., and index members adjustable along the bar for positioning the first mentioned members on the shaft.

2. In -a vmachine of the class described, the combination with a frame having a shaft and members thereon for operating on the cardboard7 said members being adjustable along the shaft, of a set-up bar having a scale thereon, bearings on the machine for detachably holding said bar parallel with said shaft and for preventing endwise movement of the bar, said Ibearings being open to permit of the ready removal and insertion of the bar., and index members adjustable along the bar for positioning the first mentioned members on the shaft.

3.. ln a machine of the class described. the combi-nation with a frame having a shaft and members thereon for operating on the cardboard, said members being adjustable along the shaft, of a set-up bar havin@ a scale thereon, bearings on the machine for detachably holding said bar parallel with said shaft, said ybar having a part, forming .a stop, adapted to engage a stationary part on the machine to prevent endwise movement of the bar, and index members adjustable along the bar for positioning the members on the shaft.

4. In a machine of the class described, the combination with ya frame having a shaft and members thereon for operating on the cardboard, said members being adjustable along the shaft, of a set-up bar having a scale thereon, bearings on the machine for detachably holding said bar parallel with said shaft, said bar having shoulders adapted to engage lthe ends of the bearings to prevent endwise movement of the bar, and index members adjustable along the bar for positioning the first-mentioned members on the shaft.

5. In a machine of the class described, the combination with a frame having parallel shafts and rotary heads on each of said shafts, said heads being adjustable along the shafts, and said frame having open bearings on a line parallel with the shafts, of a setup bar having a scale and having parts adapted to lit in said bearings and shoulders yadapted to engage stationary parts of the machine to prevent endwise movement of the bar, and index members adjustable along the bar, each index member having parts adapted to project toward the heads on both of said shafts when the bar is in said bearings.

In testimony whereof we hereunto affix our signatures.

ELLWOOD A. METZ. THOS. S. FITCHETT.

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