US1778742A - Leer feeder - Google Patents

Description

Oct. 21, 1930. v P, Q WILLIAMS 1,778,742

LEER FEEDER Filed July 2s, 1928 4 sheets-sheet 1 :man

Oct-2l, 1930. p. Q WILLIAMS 1,778,742

LEER FEEDER Filed July 28, 1.9.2.8. 4 Sheets-Sheet 2 P. Q. WILLIAMS LEER FEEDER oct. 21, 1930.

Filed July 28, 1928 l vll/1111111114 j llll//lll/II 4 Sheets-Sheet 3 CL 2l, 1930- P. Q: WILLIAMS 1,778,742

LEER FEEDER A Filed July 28, 1928 4 sheets-Sheet 4 Patented Oct. 2l, 1930 PERCY WILLIAMS, GF TOLEDO, OHIO :LEER FEEDER Application led July 28, 1928. Serial No. 295,966.

YThe' present invention relates to improvements in leer Afeeding mechanism and particularly to that type of feeder forming the subject matter to my Patent 1,537,277 dated s May 12,1925. `l

In leer feeders of the above -charactergand disclosed in` the present application,

bottles or similar articles are placed upon `an endless belt conveyor at regular timeintervals and carried in a cumbent positionrto one end of said conveyor. At this end ofthe conveyor a holder or pocket is provided to receive sai-d` articlesas they leave the conveyor one at. a time 'and are placed in an upright positionupon Ia leercouveyor whichl forms the bottom of said pocket. A pair of cooperating jaws form the outer end Wall of the pocket and are periodically opened in timed relation to projection'of a ware pusher bar into said pocket, sothat-articles may be removed from the pocket by the way of an opening formed between and by sepa-v ration of the jaws. j, Y

From time to timebottle's or the like ar'- ticles fallA over and'b'ecome lodged between the jaws of said holder preventingythe latter from closing and consequently precluding normal operation of the mechanism. :This would: ordinarily result in an accumulation of' articles in the holder and serious injury to,or perhaps breaking of certain ofthe articles. j f An object of the present invention is to provide means operating automatically t0 quickly remove bottles from between the jaws so that'normal operation of the feeder may be ,resumed with the least interruption. To this end the invention consists in the provision of auxiliary means which operates au- 40 tomatically, in the event the above condition :iris s. to cause continued operation of the bottle pusher and vrepeated opening and closing Vmovements of the jaws of the holder. Such operation of the pusher and aws is con- 15 tim l until ne holder rare cleared of the in. feri fr bottle or other article and normal functioning ofthe feeder is resumed. therobjects will be apparent hereinafter. In the drawings: Fig, l is a fragmentary plan view.

Fig. 2Vis a fragmentary side elevation. Fig. 3 is a cross sectionalv view taken substantially along line III-III of Fig. 2.`

Fig. 4. is a detail plan view showing a portion of the main circuit closer.y y

Fig. 5 is a fragmentary plan view similar to Fig. l, and showing the bottle holding jaws open. 1

Fig. '6 is a horizontal 'sectional view taken substantially along the line VI-Vl of Fig. Zisliowing a part of the mechanism for operating the pusher and bottle holder. Fig. 7 isa sectional view taken substantially atA the line VII-#VII of Fig. 6. Fig. Sis ardetail elevation of the auxiliary B5 circuit closer.

Fig. '9 is afdetailfperspective view `showing the'operating connections between the auxiliary circuit 'closer andl the jaws of the bottle holderf. Q j

Eig. 10 is a detail side elevationofthe main circuit Y'closer and the yelectrical circuits.

Fig` l1 is a diagrammatic illustration of the main `and `auniliary circuits and switches therefor. ,-1 Y

Fig l2'is asectional elevation in detail showing the means forV `adjusting a part of thecircuit closingmechanism, j

" The lfeeding'mechanisn'r constituting the subject matterI ofthe present application is adaptedV tobev placed between a machine .for forming hollow glassware, and an annealing leer, and isgoperated in a fashion to arrange the ware, such as bottles, in an upright po# sition'in rows extending across' the usual leer conveyorwliich carries the ware thru theleer tunnel'for tempering.V Thisrfeeding mechanismV includes an endless conveyor `whose ware delivering en d reciprocates transversely over the ware receiving end of the leer conveyor andiplace's articles in'an upright positionion the latter at regular intervals.

' The feeder comprises an elongated `main frame having vertical sido members 1,6 j spaced apart andl arranged in parallel rela- :l:

' tion. land supporting therebetween a sprocket 17,'oi-tlie'like, over whiclr'an endless belt conveyor A1B` is -trainedi` This 'construction'. may well",- be identical'fto that illustrated in myiPatent-"1Q537277 above referred to'. Also, ico

this frame 15 together with the belt conveyor is adapted to oseillate in a horizontal plane and thereby move the delivery end D back and forth over and transversely of the ware receivingr end of the leer conveyor 19 (Fig. 2).

At the delivery end D of the feeder, the side members 16 extend a short distance beyond the belt conveyor 18 and in conjunction with the leer conveyor 19 and a .gate comprising a pair of separable jaws 20, form a bottle holder or pocket 21 into which the bottles or similar articles are deposited for momentary retention just prior to being moved to their final positions upon the leer conveyor 19.

l Each jaw 20 of the bottle holder (Figs. 1 and 9) may comprise a vertically elongated fiat plate secured at its upper end to a supporting rod 23, the latter extending rearwardly over lateral wings 24 on the side members 16 of the main frame 15, and mounted in sleeves 25 which are fulcrumed upon vertical hinge pins 26, said pins being suitably fixed to and rising from the wings 24. The supporting rods 23 (Fig. 2) are adjustable lengthwise in said sleeves 25 so that the spaced relation between the jaws 2() and the delivering end of the belt conveyor 18 may be varied to accommodate different sized ware, or for other reasons. An arm 27 extends laterally outward from the sleeve 25 over each of said wings, and at its outer end is suitably connected to a4 push rod 28 extending rearwardly thru an opening in the upper end of operating lever 29. Coil springs 30 encircle the rod 28 at opposite sides of the lever 29 and are held in contact with the latter by washers 31. or the like.V Nuts 32 (Fig. 1) are adjustable on the rods 28 to change the tension of said springs. These springs function as cushioning devices to prevent excessive pressure upon and injury to articles which may become lodged between the jaws 20.

The jaw operating levers 29 (Figs. 1, 2 and 3) extend downwardly at opposite sides of the main frame 15 and are connected to, ormay form a part of, a rock shaft 33 extending transversely of and below the belt conveyor 18 and j ournaled in bearings 34 on the lower side of said frame 15. This shaft 33 is rocked at regular time intervals to move the jaws or arms 2O apart to permit removal of one article at a time from the holder 21 under influence of a pusher bar 57.

It is apparent that rocking of the shaft 33 imparts a swinging movement to the levers 29 which operate thru the rods 28 and 23 to move the jaws 2O toward and from each other in. alternation.

The mechanism for rocking the shaft 33 includes an arm 35 depending from the rock shaft `33 and carrying at its lower end a cam roll 36 which rides upon a circular rotary cam 37. This cam 37 is formed on one side of a cam disk 38 (Fig. 6), which is mounted upon a constantly rotating shaft 39 extending in the direction of the length of the belt conveyor 18, and journaled in a bearing 40 formed at the lower end of a hanger, or bracket 4l, the latter being bolted, or otherwise secured to the side members 16 of the main frame 15.

The cam disk 38 (Fig. G) is driven by said shaft 39 thru a friction disk clutch 42. A bevel gear 43 (Figs. 3 and 6) is secured to the shaft 39 and runs in mesh with a bevel gear 44, the latter carried by a shaft 45 ournaled in a rearing 46 and driven by the driving means (not shown) for the belt conveyor thru a sprocket chain 47. This chain 47 is tra-ined over a sprocket wheel 48 secured to one end of the last named shaft 45 and a sprocket wheel 49 spaced upwardly from :sprocket` 48 and driven by a shaft 50.

shaft 50 is journaled in bearings in the frame 15 and mounts a sprocket 50iL nnich has driving engagement with the sprocket enains 18 on the belt conveyor 18.

`At nini' time intervals the cam 37 is rotation with the shaft 39 in a 4for a pui-p to be described Accordingly, the friction disk clutch 42 (Fig. 6) is constructed to allow this cam 37 to remain stationary during predetermined intervals while the driii'ing sha ft i i s rotary movement. Vfhis construction inch-.desV a sleeve 51 keyed to the ft and enclosing a sleeve 52 extending from the disk 38. One of the clutch 1s l sleeve 51 wb:

carri-ed by the extern aL ile the other disk is carrier by the cam disk fr thrust bearing is interposed l di 38 and a bearing 40 for These disks are friction god and provide driving cont the shaft and cams. fr coil .g oo r 1g. 6) encircles one end of the driving shaft 39, and is confined between the -bevel gear 43 and an adjustable collar 54. B i ad'ustinff the collar 54 lengthwise .I L) D I l i upon the; shait'39, the tension o't the 'f maybe "iod tothereby control t'er tiveness of said clutch 42.

r time nterval.r4

L7 i cr 57 which removes the bottles or other a rein the holder pocket for posi- J. 'l 1 v PF1 upon the leer tunixeyor 1,9. ruis nd 3 mprises an elonvise of and be- Jirs bar 5! (Fig,

trame. held innernrst po..

which connect ber GO, the latter frame 15.

normally yieldl irion by a coil spi aid bar to a cross memformingapart of the main Acam roll 61 is mounted on the lower side of said pusher bar 57 and is at all times engaged with the rotary cam 56, such engagement being eected by the coil spring 59. Normally, the outer end of the pusher bar 57 occupies a position outside of the pocket `21 (Fig. 2) into which bottles or similar articles are delivered by the belt conveyor 18. During the intervals between projection of thepusher bar 57 into the said pocket 21, bottles are delivered to the pocket and set upright therein upon the leer conveyor 19 as will be apparent hereinafter.

For the purpose of periodically interrupting reciprocatiou of the pusher har 57 so the latter is held without the pocket for predetermined periods of time to allow vfree entrance of bottles or the like into said pocket, rotation of the .cam- 56 (Figs. 2, 3, 6 and 7) is discontinued at regular time intervals. This is obtained vby periodic projection of the stop finger 65 into the path or' travel of the lug 66 of the rotary cani 37. This stop linger 65 .is supported on a tra-me 67 (Figs. 2 and 7) which is fulcrumed upon a horizontal .hinge pin 68. This hinge pin 68 extends thru a sleeve 69 formed on the bracket 41 and has its end portions projected into collars 7 6 formed at the upper end of said. frame 67. Thus, the frame and stop finger 65 are free to swing about said hinge pin and thereby cause periodic engagement between said .linger 65 and lug 66. The stop finger 65 (Fig. 7) is yield ingly connected to thel frame 67 by slidingly mounting the l'ormerupon a vertical pin 71 and arranging a coil spring v72 upon .said pin in a fashion to exert upward pressure on the finger and yieldingly holdthe latter in engagement with the lower tace of said'frame 67. `A retaining nut 73 is threaded upon the lower end of said pin 71 and is adjust-able to vary thetension of the spring 72.

This Vconstruction materially decreases the probability of breakingthe stop finger 65 or lug 66 when the linger is projected`int-o the path of .sa-id lug'66 to stop rotation .of :the cams 37 and `56. A coil spring 75 (Fig J3). connects the lower end of the frame 67 to-a portion of the main frame 15 and operates to yieldingly normally hold the stop finger 65 in the path of travel of said lug 66. The tensioning member 79 may be adjusted to regulate the effectiveness of the coil vspring 75.

yThe trame'67 is intended to be swung outwardly at regular time intervals Yand 'in timed relation to movement of thejaws'20 of the holder away from each other :for the purpose above stated, by a solenoid 76 (Figs. 2, 3 and 6) co-operating with an armature 77 carried by said trame67. This solenoid is mounted on an arm `78"fo1'1ning a part of said bracket, or hanger, 4:1. The solenoid 7 6 is energized at` regular intervals by means which is actuated by the delivery of a bot- (Fig'. 3) to hold the ltle into the holder 2l. Each time a bottle is deposited in the holder or pocket 21, a mechanism to be described is actuated to op crate a circuit closer in the circuit including said solenoid 76, whereby the latter is energized and pulls the armaturein a direction to swing Vthe frame 67 outwardly to remove the stop finger 65'from t-he path ot travel of the lug 66. The cams 37 and 56 may then rotate and thru the rods and rock arm more the jaws 20 apart and simultaneously project the bottle pusher 57 'into the pocket 21 to remove an article `from the latter to its linal position upon the leer conveyor 19.`

VThe circuit vcloser and control mechanism therefore will be now set forth.

The main circuit closer (Figs. 9, 10 and 11)A is mounted upon a base block 80 arranged on the upper side of the main frame 15 and includes a pair oi horizontally 'disposed upper and lower pins or rods 81 and 81a respectively, the former being constructed of suitn able current conducting materia so that it mayconstitute a portion of the electrical circuits, as will be apparent hereinafter. Pref erably, these pins or rods 81 are arranged within sleeves 82 of insulating material. The upper pin 81 (Figs. 10l and 11) is formed with contact '83 at oneend adapted tocooperate withacontact 84 on the switcharm 85., the latter being fulcrumed upon the lowy er pin 81a. i

' A conductor 86 (Figs. 10 and 11) `torn s one side of an electrical circuit including the solenoid 76 and a battery87 or the like source of electricalV energy. Tlieothei' side oit' this electrical circuit-includes Aa conductor 88 `lead ing from the solenoid 76 to the contact 84 on the upper pin 81. 1

A current conductor 89`con1iects thecontact 83 on one end ot the upper pin 81 to the battery 87. Thus, it is seen .that withengagement between the contacts 83 and 84 the electrical circuit thru the solenoid 76` is closed to thereby energize the latter and causethe armature carryingr trame 67to swing toward saids'olenoid andfremove the stop linger 65 romthe path of travel of the lug 66, The caindisk 38 may now rotate to effect opening of the jaws 26 and reciprocation ot the puslr er bar 57 as previously stated.

The switch arm normally yieldingly held in a position to separate the contacts 83V and 84e to thereby allow the coil spring 75 armature carrying traine 67 in'its innermost position, wherein it positions the stop linger 65 in the path ot' and for engagement with the lug 66. Aleat spring 96 exerts an upward pressure upon the switch arm 85, tending to bring the com4 tacts 83 and 8lltogether. ri switch control arm 91 is disposed above the switch arm 85 and carries an adjustablev screw 92 which normally engages said switch arm 85 and positions tlie latter to open the circuit which in- Y.

ing a cludes said solenoid 7G. This control arm 91 is ad apte-1l to oscillate about a horizontal axis 93 (Figs. 9 and 10), such movement resultino` Afrom bottles or the like articles striktrigger which extends into the bottle bolder 21. This trigger is connected to the control arm 91 thru a horizontally disposed bar 95 supported in suitable bearings 96 on the upper side of the `.trame rThis bar 95 is preferably rectangular in crosssection and has one corner resting in th notches 9.7 in said bearings. Thus. the trig- .fi'er is cuite sensitive and quickly actuates the control arm 91 when a bottle or the like strikes the trigger. The control arm 91 (Figs. 9 and 10) may carry a counterweight 98 which is adjustable lengthwise of said arm and operates to insure return of said arm to its lowermost position. in which it moves the switch arm downward to break the electrical circuit.

A constantly energized solenoid 99 (Figs. 9 and lOl is arranged beneath the cont arm 91 to hold said arm against vibration when said arm returns to .its lowermcst posi tion as shown inV Fig. 10. 1t evident that without some means such as the solenoid to prevent rebound ot the control arm 91., the circuit including said solenoid '.76 would in all probability be closed at quite irregular time intervals it not continuously. Under such circuinstances7 proper operation ot tbc eerler could not be obtained. The .solenoid 99 (Fig. 10) is constantly energized by low voltage current iiowinf; thru the conductors 100 and suitable resistance 101 from the batterv 87 or other source of electrical energy.

To prevent arcing between the contacts S3 and 84 10i a fixed condenser 102 is arranged in one side of the circuit including the solenoid 76. by means of conductors 19S which connect opposite sides oi the condenser to the contacts 83 and 84:. r)This condenser absorbs current which would otherwise cai.;y er between said contacts.`

Variation in the angular relation between the trigger 94- and the walls of the pocket or holder 21 may be ess .iitial at times to obtain most satisfactory operation ot the mechanism. This may be found quite desirable when the type of bottle being handled is changed. Obviously. small bottles may rc- Quire setting the lower end of the trager Quite close to the center of the pocket to irsure engagement between the bottles and trigger. Accordingly, the core 99gL of the .solenoid 99 (Figs. lO and 12) is adjustable to raise or lower the normal position oit the control arm 91 and correspondingly change the angle et the trigger 94. A.. lock nut 98 Lied to maintain such adjustment oi" the Gbviously, the set screw on the n Sl must be adjusted in accordance with the change in position et the core 99a to insure proper operation of the switch arm S5.

Each time a bottle or similar article is dcH posited in the holder 21 (Figs. 1, Q, 9 and 10) the trigger 94C is engaged by the article and caused to move to one side. This movement ot the trigger rocks the bar 95 and thereby raises the control arm 91 10) suli'iciently to allow the switch arm 85 to move upwardly under influence of the spring and bring the contacts 83 and 84T together. Thus, the circuit including the solenoid 76 is closed and the stop linger is withdrawn from Contact with the lug GG on the cam 37. rlhru the clutch #l2 rotary movement is now imparted to the cams 37 and by the constantly rotating shaft resulting in separation of the jaws 29 ot the bottle holder substantially as shown in Fig. o, and projection ot the pusher bar 57 in the pocket or holde-r 21. Thus pusher bar en gages the lower portion ol' the bottle or other article, which is .standing` upright on the leer conveyor 19, and moves said article out et the holder by way olf the opening termed between and by separation of the two jaws 20. Immediately upon movement ot an article to a` position beyond the trigger 94C, the counteiweight andthe constantly enerized solenoid 99 operate to return the control rin te itull line position shown in Fig. 10. hus the contacts 83 and 84 are again separated to break the circuit and allow the coil spring 75 to return the armature carrying .rame 67 to a position in which the stop finer 65 again engages the lug 66 and stops rotation of the cams 37 and 56. lt is understood that the cam 37 roc is the levers 29 to open the jaws 2O of the holder and that the jaws are closed by coil springs 29a (Fig. 2). rllhe cam 56 engages the cam roll 61 (Fig. 2) and moves the latter together' with the pusher bar 5? in the direction of travel of the leer conveyor 19 to remove articles from the pocket or holder while said jaws are poen.

From time to time bottles or the like articles tall over on their sides in the pocket 21 between the jaws, for various reasons. Generally the bottle in falling over is positioned out of Contact with the trigger 94 so that the electric circuit thru the solenoid 7G is broken and the. cams and 56 1isc-mitinue their rotar7 movement. Under these conditions the cams would not ordinarily resume rotation, nor would the pusher bar 5'? again operate. until another bottle entered the holder and engaged the trigger 94. This might result in several bottles pilingup in the pocket or holder 21.

Provision is made herein to quickly clear the pocket ot' bottles which have fallen over between the jaws 20. An auxiliary circuit closer is placed in the '.ircuit including saidl solenoid 7G and operates thru said solenoid to prevent de-energization of the solenoid so long as a bottle or the like article occupies an abnormal position between the aws 20.

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Thusv the jaws are held open and the pusher bar' 57 continues tooperate toV remove the article from 4between the jaws.

This auxiliary circuit closer includes a switch arm a (Figs. 4, 9 and 11) mounted on the lower pins 81eV and having an insulated contact 84a connected thru a conductor 105 to one side oi' the solenoid 76. The other, or upper pin 8l, carries a contact 83, and terms a portion or the circuit for this auxiliary circuit closer, and is connected thru the conductor 89 tothe batteries 87.` The other side of the circuit of this auxiliary circuit closer is formed by the conductor 86 which also constitutes one side of the other or main circuit.

A control arm 106 (Eig. 9) is arranged above the switch Soi' said auxiliary circuit closer and mounts an adjustable set screw 107 which normally engages the switch arm 85a and holds the latter in its lowermost position to separate the contacts 88a and 84?. This control arm 106 is secured to a rock shaft 108 (Fig. 9) one end of which is j ournaled in a bearing in the base block 80, While its other end is mounted in a bearing 109. A coil spring 110 (Figs. 5 and 9) encircles a portion of said roch shaft 108 and is arranged to exert a tension on the rod which tends to lift the control arm 106 and thereby allow the switch arm 85a to move upwardly under the influence of the leaf spring a and close the auxiliary circuit. The end of rock shaft 108 (Fig. 9) opposite that end carrying the control. arm 106 is bent upwardly to 'form a linger 111 which at all times engages an extension 112 on one of the sleeves 25 in which the aw carrying arms 23 are fixed.

So long as the .mechanism is operating normally and bottles are being removed from the pocket 21 at regular intervals the jaws 20 open and close alternately and the pusher bar operates at regular periods. Thus the two switch arms 85 and 85a are free to open and close periodically and thereby regulate rotation oi' the cams 37 and 56 and consequently control operation of the pusher bar 57 and the jaws 20 of the bottle holder.

It, however, an article becomes lodged between the aws 20, the latter cannot resume a closed position, and accordingly the extension 112 will be moved inwardly and allow the spring to yieldingly hold the rock Vshaft 108 in a positionto lift the control arm 106 and allow the switch arm 85a to move upwardly bringing the contacts 03a and 84sl to.-

, gather. Under these conditions the cams 37 and 56 rotate continuously, thereby causing continuous reciprocation of the pusher bar 57 and movement oft the jaws 20 away from each other to clear the holder of the hottle which has become positioned betweenv said jaws. l/Vith repeated outward movement of the jaws 20 and continuation of projection of the pusher bar 57 in the pocket or holder 21, it is evident thatthe bottle 22 or other article will be quickly removed from its ob'- normal position, and the feeding mechanism may quickly resume normal operation. y

Modilications may be resorted to within the spirit and scope of the appended claims.

What Iclaim is:

1. The combination of a leer conveyor, p'ivoted cooperating jaws forming with the conveyor an article receiving pocKet, means to place articles in the pocket at' regular intervals, a pusher bar for removing articlesfrom said pocket, rotary cams, connections between said cams, jaws and bar, whereby rotation of the cams periodically opens the jaws and actuates said pusher bar, means to imparta rotary movement to said cams, mechanism actuated by entry of articles into said pocket to control `the periods ot' rotation ot the cams, said last named means including a trigger projecting into the pocket in the path followed by'articles entering the latter, whereby said trigger will be moved by contact with the articles.l electrical devices controlled by movement `of said trigger for regulating the periods of r0- tation oi said. cams, and auxiliary control means actuated by opening of the jaws to cause continued rotation of the cams and actuation of said bar while the jaws areopen.

2. The combination of a leer conveyoi",piv otedjaws above and forming with the conveyor'an article receiving pocket, a r'eciproA cableV pusher bar for removing articles from the pocket, rotary cams, means operated by rotation-foiC the cams toseparate the awsand project the pusher bar into said pocket, and automatic means to cause continuousv reciprocation ofsaid.` pusher bar while the jaws remain separated.

3. The combination of a leer conveyor,pi.v'` oted jaws' above and forming with the con- Vveyor an article receiving pocket, a reciproca ble pusher bar for removing articles from the pocket, rotary cams, means operated by rotation of the cams toseparatethe jaws and project the pusherbar into said pocket, means ope-rating during predetermined periods of time-to hold `saideams against rotation, electrically controlled mechanism operating at regular intervals tolreleasethe cams for rota tion, and means whereby the pusher bar is' repeatedly reciprocated during any abnormally lonl period of separation of said aws.

4. The combination of a leerV conveyor, means to deposit articles one at a time in an upright position on the lever. conveyor, Ya pair of pivotedjaws, said conveyor-and jaws together forming an article receivingpocket,

means actuated by setting up an article-in thepo'clret to` open said jaws,'a pusher .for

removing' articles from said pocket,` and. mechanism operatingso long as the jaws are open to actuat'e saidpusher.v

The combination of a'leer conveyor, a. trame, an endless belt. conveyor thereon',-4 meansVA to continuouslj7 move the belt to. eject articles from one end ofthe belt in an upright position, a pair of pivoted jaws, said jaws and leer conveyor together forming an article receiving pocket at fone end of the belt, means to open the aws 'at regular time intervals to provide an opening through which the articles may leave said pocket, a mechanical pusher for removing articles from the pocket by way of said opening, and means actuated by opening of the jaws to repeatedly operate the pusher so long as the jaws are open.

6. In combination, a pair of pivoted cooperating jaws, a leer conveyor beneath and cooperating with the jaws to form a pocket, means for placing articles in said pocket pe` riodically, means for separating said jaws at regular time intervals, a pusher bar for removing articles from said pocket by way of the opening formed between and by separation of the jaws, means to impart article propelling movement to the pusher bar, and means brought into operation by separation of the jaws to cause continuation of move` ment of said bar while the jaws are separated.

7. The combination of a pair of pivoted cooperating jaws, a leer conveyor cooperating with the jaws to form a pocket and con` stituting a bottom for the pocket, means for placing articles in said pocket periodically, means for separating said jaws at regular time intervals, a pusher bar for removing articles from said pocket by way of the opening formed between and by separation of the jaws, means to operate the pusher bar, switch operating means engaged by articles entering said pocket to control the means for separating the jaws and operating the pusher bar, and an auxiliary switch operating means actuated by separation of the jaws to cause repeated operation of the pusher bar while the jaws are separated.

8. The combination of a leer conveyor, pivoted jaws above and cooperating with the conveyor to form an article receiving pocket, the leer conveyor constituting a bottom Jfor the pocket, means for placing articles upright in said pocket at regular time intervals, electrically operated mechanisms for opening the aws and removing the articles from said pocket, means engaged by said articles as they enter the pocket to cause operation of said mechanism, and auxiliary means operatively positioned by opening of the jaws to cause continued operation of the article removing mechanism while the aws are open'.

9. The combination of a leer conveyor, means to deliver articles thereto comprising a ware conveyor, a pair of separable jaws at one end of the ware conveyor arranged to cooperate with the leer conveyor in forming an article receiving pocket, a pusher bar arranged i'or reciprocation .across the pocket July, 1928.

PERGY Q. WILLIAMS.

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