US1379472A - Freight-handling truck - Google Patents

Description

J. CA. MORGAN AWD C) S m\,-w

FREIGHT www@ TRUCK,

'flan fw Q www @3fm 1. Q. MORGAN AND 0.18. SCHROEDER.

. FRElGHT HANDLING TRUCK.

I@ l APPLICATION HLED MAY 8, 1920. j L3 MARI, i .Patented May 24A, i921 :j sss-SHEET 2.

J. C. MORGAN AND C. SfSCHROEDER.

FREIGHT HANDLING TRUCK e y APPLIATiON FILED MAY 8, 1920. l/QAWQO Patented, May 2111, i921.

5 SHEETS-SHEET li Y 5w e ft @i J. C. MORGAN AND C. S. SCHROEDER.

FREIGHT HANDLING TRUCK.

APNIC/mow FILED MAY in 1920.

e@ mi? Patented May 24, 1923 SHEETS-SHEET 4 J. C. MORGAN A`ND C. S. SCHROEDER.

FREIGHT HANDLING TRUCK.

APPLICATIQN FILED MAY 8, 1920.

I S11/ogm Fo companying drawings in which tiated andfin whichthe limit switch'foivcontrolling .the motor nieren Je'ianse. tiener-in Ann CHARLES s. scrinonnnn, or New isiaierrroii, New ironia, assieiions, BY mesme-ASSIGNMENTS, 'ro Trie YALE e roi/vain iaannracrnr.-

ine ooiieananfor 'STM/Ironia, oonnnc'rioor, a Coaroiaarrioii or commericna".

ramena-iranienne. camicia. l

speciacatibnpf Lettersra'tenr, Patented May 24.,

Application filed May 8, 1920; Serial No. 379,776.

" T 0 all whom may concern.: 'l

lie it know-n that we, JAMES Cf MoRGNJ and CHARLES S. Soiiizoiiniin, citizens of the United States, residing vat .New Brighton,l 5 in the borough of Richmond of the city ot New York, in the State ot New York, have invented certain new and useful improvements in Fre ightHandling Trucks, of which the following is a speciiication, retlhis invention 'relates to trucks such as are use .for the handling of freight in freight motor driven truc-ks of this Character and the embodimentA herein illustrated has been designed for the handling of' heavy rolls otprint paper, although it is capable of use in the saine orin slightl-ymodied form tor the handling of various other varticles and packages of goods. The invention has particularly in view the provision of means for picking up from the iioor heavy article such as a roll of printI paper, 'shifting it to a position suit-able tor transportation, and

' setting it back on the iloor'at the point desired. The invention' will be more fully explained hereafter with reference to the acit is illusonalarger scale.

Fig. 4 is a` view in section on the lane indicated on the brokenv line 4 4' of E ig. 3. Fig. 5 is a detailed view in elevation ot up the article to be transported.v

Fig. .6 is a viewot the same vin side elevaemployed as the sourceot power for picking itioni ASonie parts being broken away..

. Fig. 7 is a' diagrammatic. viewA ot the wiring connections of the limitswitch and the motor,

Figs. S and 9 are fragmentary views showingparts of the limit switch indifferent positions. The't'ruck toivhich the invention is applied has a'frame a, suited to the requirements of the work, motor and steering wheels 2),' carrying wheels c which maybe cross-connected to the motor wheels and a storage battery b oX ci. lo Verence being had to the accompanying drawings,l forming a part hereof.

A motone, receiving current trom the storage battery .through the limit switch, as

hereinafter described, drives, through suitable gearing e,.shown in Fig; l, a screwv `shaft j, mounted in suitable bearings carried by the trame a and the Isupplemental `trainee. A travelingnut' g, engaged by the screw 7U, is mounted to slide on a guide bar f/gand has pivoted thereto, as at 02,51

forked. connecting rod 7L.A

rl`he arms of the'forked connecting rod 7L are 'pivotallyconnected, j one at each side,

'as at'L". toA clamping arms z' provided each with a toothedsector asfat 2". and pivoted as at on a plate 7 fixed to an apron or carrier 7c which is suited to thetorni of the articles to be handled,`such as rolls Ot-papcr or drums orbarrels or other articles. The apron c. has secured at its lower end plates or arms 7..-2 which are pivoted, as at ,103, tp brackets (z3, carried b v the supplemental frame a. .The arms k2 are preterabl)v raised somewhat above the floor andr are extended somevhat beyond thc apron so that when the article -tQ be transported is 'graspcd -and tilted, as hereafter,-described. its edge shall belitted at once clearot the door.

strap Z. provided at one or at each end with a takcup Z. is engaged at each end with the corresponding arm and is adapt! ed to encircle the article to be transported. when the truck has been placed in proper relation thereto. and to hold it to the apron 7c".

dog l'In pivoted to the apron one at each side. is normally7 held b v a `spring m in engagement with the sector i'lot' the coi'- responding arm z' and is held out ot engagement therewith. when the parts are in the position shown in Fig. l. by a chain m2 connectedto the crossbar c2 ot` the supplemental trame a. A chain n m a v be connected at one end to the apron 7c and at the other end to a-sed arm n', to limit the movement of the apronfc in one direction, while the arm n secured lto the frame, may

form a supportfor the' apron and the load `when they are tilted, as shown by broken lines in Fig. 1. l

It'will vbe obvious that the screw shaft f l might be turned by handf or any suitable -shaft f to ldraw the nut g i apron `ctlie irsteHect'is, through 'the con- .nectorj/ and thearms z', toI draw the ,strap means and the operation, of parts already lreferred to 'will therefore be described before an explanation of the devices for controlling the motor e is entered into. It being assumed that 'the rollof paper or other article to be trans' orted stands upon the lfloor, vasshown in Hg. 1, the truck is moved into such relation therewith that the strap Z can be placed about the roll and fastened to the arms i, 'Ilhe apron lc being vertical atthis time, the dogs m are lheld by the lchains'm? out of -engagement'with the sectors z", so that thearms are free to be moved by the shaft in either direction as may. be required by convenience in securing the strap Z. If power be now 'appliedto the away from the i tightly abouty the paper roll and the latter 4snugly into the apron-lc. Continued rotation of the shaft in the samefdir'ection then A from the floor. andeventua ly bringing i apron lc begins, the chains m2 will be slacked f causes the apron kf to be tilted on the fulcrum ofthe pivots 703, raisin the paper roll it. into the position shownv by broken lines in Fig. 1 at'rest against the s upportm, in a' positionsuitable for transportation.. It will c seen that as soon as the tilting of the and the dogs m will be drawn by the' springs mf into operative relation with the Isectors Z so that the arms z' can not thereafter move toreIaX the grip ofthe band or'strap Z on apronand the load from the tilted position i the paper roll.' When the truck hasl been moved with its load to the place wherethe loadis to be deposited the screw shaft f is rotated in the opposite direction to move the When the means 'for tightening thev band' Z and for tilting the apron or carrier 7c with itsload are motor operated, and when the" article to be transported is of great Weight,

as a roll of print paper, itis desirable that the motor be .controlled automatically through the movement of the carrier sothat it shall with certainty bestopped preferably before" the carrierand its load reach the position of .rest on the support n', 'for the purpose of avoiding the breakage of parts "likely to occur if the'motor continues to run after the load has reached a position of rest. This purpose is accomplished conveni ently 'by the provision of a limit switch, operated by the movement of the carrier to stop the motor without requiring the attention ofthe operator', and operated by hand to start the motor.- Thefposition of the4 switch is indicated and some of the c'o-ac'ting .parts areshoWn in Figs. 1, 2 and 3 of the drawings, while the construction of a switch suitable for the purpose isA shown in detail in Figs. 5, 6, 8-and 9, the wiringof the switch, motor. and battery being shown diagrammatically in 7. The switch shown has a series of fixed contacts jo and a series of fixed contacts'o", suitably connected to thel field coils e2 and the armature coils e3 of the motor e, and to the battery o3, in a 'manner common to Vcontrollers for electric motors and as `clearly indicated in Fig. 7. The switch also'has a pair of movable contacts 04, adaptedto bridge the contacts o and o and carried by the sleeve -p which `is secured to a -rod p mounted to slide vertically in the frame and provided witha suitable handle p2. The.coiled springs-1o3 and p4 act in opposition to each other upon the sleeve p to restore the sleeve andthe contacts o4 to the middle or normal positlon, indicated in Figs. 5, 6 and 8, when. the rod is released after v movement in one direction by the hand or jin the otherwdirection by the carrier. The

sleeve p has upper and lower lugs p5 and p6 forl cooperation with a slide g and with beveled stops 1' and s. The slideqis formed with upper and lower-'shoulders 'q' and g2 for coperation 'with the lugs p5. and p re spectively-and is slotted, as at E, for cooperation with pins g4. The shdelis also provided with a cam g for coperation with lugs r and s formed on the bell crank levers r2 and s2 which carry respectively the bev- `'eled stops rand s and-are p ivoted on pins g4. The horizontalarms of the two bell cranks are connected by a spring r3. f

At its lower end the slide g is connected by la rod QG with. a bell crank Q7, one arm g8 of :which is yslotted or apertured to engage loosely a ro'd t which is supported for endwise' movement in `suitable guides on thev lframe and is connectedto a bark'4L secured to one of the arms' 762 of the carrier Ic. The rod has two collars t'. and 2,'one of which may be adjustable as shown and' the 'armi g5 of the bell crank Q7 stands between these two collars, so that when the'carrier 7o is tilted to extreme position, as shown in Figs l and 3, and the rod t is moved-to the right, as

shown by full lines in F-ig. V3, .the collar t t strikes the arm gs and moves it from the position shown by broken lines in Fig. 3 to the position shown by full lines, at the same time, through the rod g, moving the slide g up from the position shown by full lines in F igs. 5; 6, and 8. The effective movement otl the slide Q .takes place shortly before the carrier leaves its position ot rest and ettects7 as will` be explained, a movement ot 4the sleeve j? suthc'ient to place the vcontacts 04 in neutralposition, thereby breaking the current to the motor and stopping the motor. As, will be explained, `the rod p is now locked agzg'ainst downi 7ard movement and can only'be moved upward by the operator for the purpose ot starting the 'motor in the opposite direction. Y

The action of the beveled stops 7 and s, in

cooperation with the lugs p5 and pt, is sutliand `rod p -under the intiuence ot either spring p3 or p, but is not sutheient to pre- .l vent the movement of Ithe sleeve p and the cient to prevent movement ot the sleeve'p rod p when forced, the spring 'rthen permitting either stop '1' or s to be thrust back p6, as the case may" be. Furthermore,' the stop s is lield in its retracted position. shown.' in Figs; 8 and 9,

Aby thecoperationof the cam Q5 of the slide@ Q'with the lug s ot the bell'cranltvsg, when theslide y is in its lowest position, and similarly the beveled stop 1* is held in its retracted position by the cooperation of',

the cam y with the lug'r when the slide is'in its highest position.

ln describing the operation l of the limit switch it vwill be assumed that the pai'ts are first in the position shown in Fig. 8, with the contacts 04 in the neutral position. The truck being then backed up t'o theroll of paper andthe band-Z having been placedabout the saine and connected tothe levers z', the

operator, rby the pressure of his hand on the handle p2.' deprcsses the rod p" Jfrom the position shown in Fig. S to the position shown in Fig'. 9 and thereby moves the lug p5 past the beveled stop r, compressingfthe sp'i'ingp1 and moving` the contacts o'L to the position indicated in Fig. ,9,'in which the e circuit through tliemotor'eis completed.

rl`lie rotation ot the screw shaft 7' is thus commenced and., as already` described, the

first effect-ofthe movement otV the traveling' mit g isto movethe levers 1' so as to tighten the band 7 aboutathe roll.tlie levers i beingheldin their, new position by the dogs m as -soon as .the tilting of the carrier ybegins and the chains m2 are slacldid.` rl`he'tiltinj.:` movement ot' the carrier 'f continues until The Figs. S and 9. This movement ot' the slide causes the beveled stop to be withdrawn by the fact that the shoulderq then stan'd's eloselyunder the lug` p and prevents any eiiective downward movement. -Also by the upward movement of the slide g the beveled stop 1iA is withdrawn `from operative posi tion 'and the beveled stop s is permitted to move into operative position, accidental or unpiemeditated upward movement ot the rod p being` thus prevented. truvik has been moved to the place where -the load is to be deposited the operator, by application of liishandto the handle 2i, pulls the rod 7J upward, the lug` p0 sliding past the beveled stop s. By this movement of the rod p the contacts 0i are shifted so as to throw current on the motor but in reverse, thereby restoring` lthe carrier gradually to its vertical position, placing the load on the ioor, and. by the tighteningof the chains m2,withdrawing the dogs m i from the toothed sector 4i so that the band Z is relaxed and can be cast oil. lFurthermore, when the carrier r moves back toward the vvertical position the collar t2 on the rod 't strikes the arm o?, andas the carrier 7U" reaches the vertical position, or shortly before. causes the slide-f] to be pulled down When the and, through co-action of the shoulder q ment of the rod being' assisted by the expansion of the springp, previously compressed byfthe up vard movement ot the rod 71. AThe downward movement ot the slide causes the beveled stop i to move into op erati-ve position. illfhen the contacts o" are in Ineutral position the rod p is balanced between the'tw'o springs p and p4 and is held yieldinfily against accidental or unpreineditated movement by the beveled stop 2'.

lt will be understood thatvarious changes` in details'of construction and arrangement. not only ot the limit switch but of the mechanism t'or lgraspingY and tilting` the load. may 4be made to suit the convenience ot the vinanutacturer or the requirements ot use and that the invention is not limited to the particular construction shown and described herein` except as pointed out in the claims.

y le claim as our invention:

l. The combination ot' a supporting traine, a carrier pivoted on the'trame. de- -vices to secure the article to be handled to the carrier and means to tilt the carrier` and also clampjand secure the article to the carrier.

2. The combination of" .a supporting.- frame; a carrier piyoted on the frameg de-- vices to secureto the carrier the article to the .carrier on the frame.

be handledand means acting upon and through said devices to cause Said devices to bind the article to the carrier andvto tilt 3. The' combination' of a frame, an arm ivoted on the apron, a band connected to said arm and adapted to draw means 'to swing-the arm-on the apron toconnected to said arm and adapted to-draw' into the apron the article to be handled, and

means to swing the arm on the apron .to

tighten the band and to tiltthe apron onthe frame, an -apron mounted on the frame, an arm pivoted on the apron, a band connected'V to said arm andada ted to draw `into the apron the article' to e handled, -means to swing the arm on the apron to tighten theband, and a dog to engage the arm andpre- `vent its movement to'relax the band.`

6. The combination4 .ofy a supporting frame', an 'apron' pivotally mounted 'on the frame, an arm pivoted on the apron, a band connected to said arm and adapted to draw.

into the apron the article to be handled,V

means to vswing the .arm on the apron to tighten the band and to tilt the apron on the frame, and a dog to engage thearm and to prevent its movement to relax the band.

7 The combination of a supporting frame, an apron pivotallymounted on the frame, an arm ivoted on the apron, a band connected to said arm andadapted to draw into "the apronthe article to be handled,

the arm on the apron to frame, forwardly projecting arms secured to the carrier and pivoted at their front ends to means toswing tighten the band and to tilt the apron on the frame, a dog to engage the arm, means 5to hold the i' dog normally in engagement with the arm, andmeans acting in 'a definite positionof the apron to hold the dog ininoperative position.

8. .The combination of a supporting frame, an apron pivotally mounted on the frame, 'an arm pivoted on the apron, a band connected to' said arm and adapted to draw into the apron the article to be handled, 4means to swing the arm on the apron to tighten the band and to tilt the apron on the frame, a dog to engage the arm, means to hold the dog normally in engavement with the arm, 'and a chain connected to the dog and to the frame and acting when it is drawn taut by the movement of the apron' to hold the dog in inoperative position.

9. The ,combination ofy a supporting l supporting frame, an apron mounted on the-supporting frameya carrier; pivoted on the frame, the sald carrier haying an open lower or rear end, means carriedby the carrier for clamp ing and holding the article to be handled, a screw shaft, atraveling nut connected to the carrier and also to' the' clamping means frame, acarrier pivoted on the` frame, devices to secure to the carrier the article to be handled', a' screw shaft, -a traveling nut and a connection from the nut to said devices to carrier on the frame.

bind the article to the carrier and totilt the 11. The combination of4 4a supporting frame, an apron mounted on the frame, an arm pivoted on the aprong'a band connected to'said arm and adapted' todraw into the apron the article to be handled, a screw. shaft,l a traveling nut,` and a connection .from the nut to said arm.

12.The combination ofi-a supporting frame, an'apron pivotally mounted on the rame, an arm pivoted on the apron, a'band connected to said arm and adapted .to draw into the apron thevarticle to be' handled, a

screw shaft, a traveling nut,and a'connection from the nut to said :a1-m.

.13. The vcombination of: a supporting frame, forwardly 'projecting carrier arms secured to the 'carrier,adjacent thev lower end of the latterrand pivoted at their front ends 'to the su porting* frame,-means including a motor to tiltthe carrier"`on the frame, a switch to control-the motor,l anddevices connected at one end/to one of said arms and 1. connected atiits other end to hswitchl actuating means whereby-the latter wilLbe actuated by the upward movement of 'said -`connecting arm to stop the motor when the carrier has reached its-` normal carrying position. l

14. The

combination of a supporting motor to tilt the carrier on the frame, a'

switch to controlthe motor, .a ld e'vicevcon-l nected at one end to oeof said. arms and connected at its other end to switchfactuating means 'whereby the latter w'ill'beV actuated by the upward movement of said con-l necting arm'to stop the motor when the carrier has reached its normal carrying position and hand actuated devices to operate the switch to start the motor. y

15. The combination of a supporting frame, a carrier pivotally mountedon the frame, an arm pivoted on the carrier, a band connected to said'arm andadapted to draw into the carrierthe article to be handled, means including a` motor to swing the arm on the apron to tighten the band and to tilt the carrier on the frame, a switch to control the motor, and devices actuated by the ing arms, brackets depending from the carrier and to which said arms are pivoted in a 4 plane below the supporting frame, a. screwA 10 shaft, a; travehng nut, a connection from the nut to the carrier, a motor to drive the screw` shaft, a switch to control the motor, and devices connected with one of said forwardly projecting arms on the carrier to operate the switch to stop the motor. y

This speoiication signed this 7th day of May A. D. 1920.I

JAMES C. MORGAN. Y CHARLES S. SCHROEDER.

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