US1647356A - Machine for handling articles - Google Patents

Description

W. F. HENDRY MACHINE FOR HANDLING ARTICLES Nov. 1, 1927.

Filed Feb. 10, 1926 5 Sheets-Shet 1 //7 yen/w M j- Nov. 1, 1927. I 1,647,356

. w. F. HENDRY MACHINE FOR HANDLING ARTICLES Filed Feb. 10, 1926 5 Sheets-Sheet 2 NOV- 1 I W. F. HENDRY MACHINE FOR HANDLING ARTICLES FiledFeb. 10. 1926 5 Sheets-Sheet 3 5 Sheets-{Sheet 4 I W. F. HENDRY MACHINE FOR HANDLING ARTICLES Filed Feb. 10'. 1926 Nov. 1,1927.

EN mm ww Nov. 1, 1927. 1,647,356

. w. F HENDRY.

MACHINE FOR HANDLING ARTICLES F iled Feb. 10. 1926 5 Sheets-Sheet 5 Patented Nova '1, 1927. g

WILLIAM F. nnnnny, on ossrnnve. NEW YORK, ASSIGNOR, BY MESNE AssIGnMEnTs,

TO NATIONAL CARBON COMPANY, INC

HEW YORK.

., on NEW YonK, 111-11, AcoRronATIoN or MACHINE r03 HANDLING imam; I I

Application filed February 10, 1926. Serial No. 87,235. I

This invention relates to new and useful improvements in machines for handling articles.

It is the object of the present invention to provide a machine by means of which a large number of articles of a fragile nature stored in a reservoir may be delivered automatically in the desired condition. In accordance with the present embodiment of the'inveir tion the articles are disc-shaped. They are notassorted in the reservoir, but when discharged therefrom they are advanced in such a manner that only whole articles, and aplurality of them standing on edge side by 7 side, will be deposited in the vvultimate receptacle. v 1 'In the following a preferred embodiment of theinvention will be described in detail. The machine herein disclosed is adapted for delivering into a receptacle tour fragile'tablets or washers compacted of a mixture of manganese dioxid and graphitdthe machine being used in the assembling of dry cells. However, the apparatus may be adapted to advantage for the handling of other articles. The construction may be varied to suit various industrial requirements without depart ing from the sprit of the invention defined in the appended claims.

In the drawings a tablet or washer assorting machine 1S illustrated, Fig. ,1 be ng a side elevation; Fig. 2 is a top plan view; Fig. 3 a top plan view on an enlarged scale, as compared with Fig. 2, of the tablet-receiving and delivering mechanism; Fig. 4 a plan view of a perforatedplateplaced below the hopper; Fig. 5 a verticalcross-section of the machine; Fig. 6 a vertical cross-section of a portion of the machine showing the operation of certain gates; Fig. 7 a top plan view of two runway sections; Fig. 8 avertical cross-section of an intermediate runway section along lines 88 of Fig. 5; Fig. 9a vertical cross-section of the hopper; and 'Fig. 10 a vertical cross-section of the tablet receiving and delivering mechanism.

' side i and straddles the guides.

signed simultaneously to deliver four tablets; standing on edgeside by side, into a suitable receptacle such as 2 '(Fig. 10). The

object is to hold a large supply of unassorted tablets and to deliver only four whole tablets at a time into the receptacle. The tabletsare stored inia reservoir or hopper which has a flaring. mouth and sloping bottom at. Thehopper is provided with a side opening near its bottom, as indicated at 5, and through this opening tablets will glide out by gravity between guides 6. and

7 on top of a plate 8. The hopper is pivotally mounted at 10 on a platform 9. The plate 8, as well as the guides 6 and 7,are

also mounted on this platform, the rows of small and large perforations 11 and 12 in the plate overlying an opening 13provided in the platform. The platform 9 is mounted by means of brackets 14 ;on a table, 15 at a V V suit-able angle so, as to permitthe tablets to gravitate out of the hopper through the opening 5. In order to aid in the emptying otthehopper, the latter is periodically occillated between the positions indicated in dotted afndsolid lines respectively in Fig. 9, by means of a rod 15 connected to a bracket 16 fof'the hopper. The rocking motion is imparted bylmeans of a bell crank lever 17 which is mounted on ashatft 18 the latter being. constantly driven through a pulley 19.' The shaft 18 is journaled between plates QQand' 7 6 which are mounted vided with a bottom sloping down towards The machme as disclosed herein is de-' the plate and with substantially" triangular guides 24*. The runways like 23 are slidably held against plate 8 by screws such as 25 projecting through the bottom of the runway and through slots 26 in the plate 8, into T-shaped blocks 29 engaging the bottom of the plate 8. Two studs 30 project from each block 29 within the slots 26 so as to prevent twisting of the block. During the operation of the machine these runways 22 to 25 are caused to oscillate between the positions indicated. respectively, in dotted and solid line's-in Fig. so as to cause the tablets near the end of the plate 8 to advance. The manner in which this is accomplished will be explained at a later point.

The width of each runway between the standing onitsedga Many of the tablets, however, will lie flat on top of the guides 21 and between guides of adjacent runways. Special means are provided to insure the proper positioning of these tablets. A bracket 31 projecting from the table rotatably supports above :the runways or chute's a shatt 32. Two areshaped blades 33 and are mounted on this shaft. one projecting down l'oetweeu runways and 24, and the other between the runways 23 and 22. The blades 83 and 34 are oscillated with shaft- 32 between the dotted and full lined positions indicated in Fig. 5, by means of a rod 35 against the tension of a coiled spring 36 stretched between a. pin 37 passing through the free end of blade 33 and a pin 38 in bracket 20. One end of rod 33 is tastened to the pin 37, and the other end rides on a circular cam 39 whichi-s eccentrically mounted on shaft 18. The vertical and lat eral displacements of rod 35 being prevented by a bracket 40 mounted on plate 20, during the rotation of shaft 18 the rod will longitudinally oscillate and cause blades and 34 to move back and forth between the chutes. In order to permit free movement of the blades and 343510118 4&1 and 4:2.a-re provided in the plate 8 so that the blades register therewith.- I The relativeproportions of the tablets and the chutes are such that if a tablet lies on any guide wall 24*, then it will be tipped over by one of the oscillating blades so that it falls edgewise on one of the chutes- Only properly positioned tablets can therefore pass beyond the blades 33 and 34, and from this point on the tablets will roll or glide edgeways on the chutes.

As the tablets .roll between the blades 33 and 3%, fragments such as 13 will be dropped from the chute. the operation of gates such as 44. Each chute section 22-25 provided near its end with gate like ll, the gate being pivotally mounted-on the chute at 45. Thegate swings within an opening 4.6 in the chute. l/Vhi'le the chutes 22-.25 are movin to the left from their extreme right-hand positions,

This is accomplished by each gate rests on plate 8 in alignment with one of the slots 26, the width of the gates being greater than that of slots 26. As indicated in Fig. 6, the plate 8 will keep the gates 44. closed and the tablets will roll over them. When, however, a chute section reaches its extreme left-hand position, then, owing to the provision of an enlargement 4;? at the end of each slot 26, the gate 4 2 is permitted to drop down into the position illustrated in 5. Small sized fragments or tablets Wl-ll now drop down from the chutes through the openings 46.

' Tablets that roll over the gates ie l of the chute sections 2225 reach a second runway section. Four such sections as, 49, and 51 are provided, each constituting a continuation of one of the chutes 22-25. The chute sections 22'25 and l 8-5l are pivotally oined together by means of shafts such as 52, 58, etc. As was the case with the first group of sections, chutes 48 51 are alsoprovided with guide walls 54; confining the tablets to an upright position. The guide walls 54 are held together below the runways by means of rods such as 541 As a tablet enters a' section 485l, it first passes over a gate 55. The gates are pivotally mounted in the runways at 56 with-' in openings 57 which are wide enough to in,- sure the dropping through of tablet tragments like 58 (Fig. 6) which passed over the opening 46. v

The gates are periodically opened and closed during the operation of the machine in the following manner: A bell-crank lever arrangement 60 engages the lower end of the gate '55 at 61. I This bell crank lever 60 is mounted 011a plate 62. One plate like 62 is provided below each chute section 48 to 51 and each of these plates is provided with a lever arrangement like 60 for controlling the gate 55 of the respective chute.

The plate 6201f each chute section may be oscillated with respect to the chute itself in a manner to be hereinafter described, and

during this motion, the gate 55 is moved from the position indicated in Fig. 5 into the position illustrated in 6, to test the size 01 the tablet that happens to rest thereon. The plate 62 is provided with two perforations 63 and fi which, in the positionillustratcd in Fig. 5, register with perforations 65 and 66 provided in the run way. While the plate 62 and the runway are longitudinally displaced with respect to each other, the Openings in these two will be alternately brought into registry, or the openings in the runway will coincide with the solid portions of plate '32. The extreni'es of this relative displacement are illustrated in Figs. 5 and 6, respectively. side walls of the openings 65 and '66 are sloping, thefentrance of each opening being large enough to permit the passage there- The i Hil i through ofawhole tabletl 'Th'e diameters of the openings 63 and 64 are equal to the base of the'openings 65 and 66, which is such that a whole tablet cannot drop through it.

brittablets .with' partschipped E, such as 67'a11d 68, will drop through. In this man'- neriit is insured that only whole round tablets will roll past the opening 66 in each runway section 48 to 51. Having cleared this gauge, the tablets roll or slideto the end of the runway section and fromthere enter into runway sections 70, 71, 72 and 73. Nearthe and below their respective runways,

left-hand end of each runway 70'to 73,-a"

boss like 74 is provided through which a' shaft 75 projects, theend's of-which are journaledin the brackets 20 and 76 projecting from the table 15. Each runway may be movedup and down around this shaft as a pivot point. Onthe runways 70 to 73, thetablets are confined into an upright position by means of guide walls such as 77. The walls 77 are held togetherbelow the runways by studs 77, These guide walls, as well as the guide walls 54 ofv the chute sections 48' to 51, form are segments and extend abolve T 1e arc-shaped right-hand end of each guide 77 is toothed, as indicated at 78, and these teeth intermesh with the teeth 79 formed in the arcuate ends of the guide plates 54 of the preceding chute'section. A lug 80 downwardly projecting V from the guide plate 77 carries a roller 81'which rides within a groove 82 providedin the side'of a 'cir-' cular cam 83. The cam 83 is eccentrically mounted on the shaft 18 and during its rotation,indicated by the'arrow (Fig, 5), it will cause the guides 77' Withjchute 71 to rock around the pivot point 75. Theguides of chutes 71 and 73 "are connected each with a cam like 82 and therefore these two guides will be rocked inunison. On the other hand, the guide plates of chutes and 7 e. g., 77 are provided :with lugs like the rollers 81 of which ride in a groove 84 of thejcircu-lar' cam 39 (one cam being provided for each ofsaid chutes) which are angularly displaced by 180 with respect to the cams 82. The chutes 7 0 and 72 willbe also rocked'around shaft 75, but will reachtheir lowermost positions when the chutes 70 to 73 are in their uppermost positions. This rocking of the chutes- 70 to 73 will cause the advance of the tablets and will tend "also to shake down into line tablets that may have crowded on top of other be scillated harm forth'betweenthe pa sitions indicated in dotted and solidlinesl: respectively, in Fig. 5, andcausein turn the; oscillation of thejchute sections 22 toy 25 "with the above described results. The oscillation of these chute sections will tend to stir up ,thetabl ets at-the' bottom of the hopper,

will cause the advance of the tablets, and: insure that. broken tablets drop through 75- :In'order'to insure thattheguides'77- and' 4 54'remai1i properly in mesh, springs maybe gates 44' and 45 and openings 65 and- 661 employed against the resiliency of which the parts are operated. 'However, such springs have. been "found troublesome owing. to the fact that they lose their resiliency and that if theyare sufficiently stiff, the power consumption "is "too high. Furthermore, such springs easily get out of alignment and tangled. Inorder to obviate "this, one end of arod 86 is pivoted at 87 between each pair of guide plates 54; "The other end of said rod is"pivotallyjconnected at 88'withthe free end of a lever89. This lever isfpivoted on'a stud 90 mounted onran ear 91 of the bracket 20. projectingwithin an opening 92' of the table 15. The] lever 89 is. provided with a camsurface'93. A roller 94 mounted on the end of a lever rides over this cam surface" when the lever 95 is rocked around a shaft 38 ion which it is mounted. An ear '96 of lever 95 carries aroller 97 which, rides in the groove 82 of cam 83 at a point diametrically; opposite to that occupied by the roller'81. The lever 95 will therefore vbe 111'.

its uppermost position; illustrated in Fig. 5,

when the chutes70 to 73, are in their upper most position, and the earns 83 will move the levers 95 up and down in unison withthe chutes'71 and 73. During the movement of the'roller 94 on the cam surface93, the-lever 89' is permitted gradually to'move to the right until it reaches the positionindicated in Fig; 6, permitting therefore acorresjpond ing righthand 1 displacement of the associated chute sections 49 and 51. "The-levers are so proportioned and the cam surface 93 so cut that the gear teeth'7 8 and 79 are constantly maintainedv inf mesh. Similarly, the" chute sections 70 and 2 are 1 interconnected by means of rods 86 'which,'through levers 89 and 95 are operated by their cams 39 half a I '7 cycle behind the two. other'chute sections. v

Tablets positioned in the runways 7 O'to 73 will roll onto a platform 100. The platform 100 is" mountedon the brackets 20 and 76 by means of triangular plates 101, 102, and the entranceoftablets to this platform is con trolled by a wedge'shaped plate 103inwhich afcover'104 ofthe platform 100te'rminates.

The plate 103 is'provided with notches such v as 105coinciding with the runway, and only.

tablets rolling on the runways will be able to pass through these notches onto said platform.. Tablets that roll on top of otherv i of the receiver.

elf.

tablets or that lie on: the guide walls will hit against the plate 103yand fall off the machine into a suitable receptacle, As clearly illus trated in Figs. 5 and 10, the platform 100 will, during the operation of the machine, contain three rows oftablets (each row comprising four tablets) confined between the platform 100, its cover 104 and the side plates 106 and 10-7 A tiltable tablet receiver 110 ispivotally mounted on theend of, the platform 100 by means of a shaft 111.. A coiled spring 112 stretched between shaft '25 and a pin 113 projecting from a side wall of thereceiver 11 0 normally holds the latter in the position illustrated .inFigs. 1. and 5'. The receiver is open on top andit is longitudinally divided into four sections by meansofconverging dividing walls 114, 115 and 116. The bottom of the receiver 110 is at one end curved up as indicated at 117. The first row oftablets on the platform 110 willroll within this curved-up end of the receiver, one. tablet being confined within each runway defined by'the dividing walls 114 to 116.

Whenfit is desired to deposit a group of four tablets in the receptacle 2, then by suitable.

meansthe receiver 110 is tilted down against the tension of spring 112 into the position illustrated in 10, whereupon the four tablets will roll down to the end of this receiver and dropout through the opening 118, being guided thereto by the walls 114: to 116 and a guard 119, provided at the end While the receiver is in this tilted -down-position, the'curved-up end 117 (see Fig. 10:) prevents the first. row of tab-- lets on platform 100 from advancing.

What is claimed is:

1. In a machine of the class described, a reservoir for articles of uniform size and shape, runways leading to said reservoir, and means comprising intermeshing gear sectors attached to said runways for oscillating said runways with respect to each other and to said reservoir to cause. the advance of said articles onsaid runways.v

2, In a machine of the class described, areservoir for articles of disc shape, runways leacli ng'to said reservoir, guides for confining said articles on said runways in an upright position, a receptacle, and a tiltable conveyor means for depositingfrom each runway only one article at a time in said receptacle.

3., In a mach ne of the class described, a reservo1r for articles of uniform slze and I shape, a runway into which said reservoir oscillating the second, section and longitudnea /nee inally displacing it with respect to said reservoir.

l. In a machine of the class described,

reservoir for articles of uniform size and shape, a runway into which. said reservoir empties, said runway being divided into. three sections, aconst-antly rotating shaft, a cam controlled by said shaft for oscillating the first section, means jointly con trolled by the first section and saidcam for oscillating the second section and longitudi nally moving it with respect to said first section means controlled b the second sec-- tion for longitudinally moving said third section with respect to said reservoir, andv a lever operated by said shaft for oscillating said reservoir with respect to said runway.

5. In a machine of the class described, a,

reservoir for articles of uniform size and shape, a plurality of runways arranged side by. side into which said reservoir empties, each of said runways being divided .into first, second and third sections, a constantly rotating shaft, means controlled by said shaft for oscillating said first sections with respect. to each other, means jointly controlled by said first sections and saidshaft for oscillating said second sections, with re-' spect to each other, means controlled by said second sections for longitudinally moving said third sections with respect to each other and said reservoir, and a lever operated by said shaft for oscillating said reservoir with respect to said runways.

6. In a machine of the class described, a

to each other and longitudinally moving them, with respect to said first sections, means controlled by saidsecondsections for longitudinally moving said third sections with respect to each other and said reser voir, and a lever operated by said shaft for oscillating said reservoir with respect to said runways.

7. In a machine of the class described, a reservoir for articles of uniform size and shape, a runway into which said. reservoir empties. said runway being divided into a first and a second section, a constantly rotating shaft, cams operated by said shaft simultaneously to oscillate in a vertical direction said sections, and a lever operated by said cam; longitudinally to oscillate said second section in proportion with said oscillation in a verticaldi-rectiom ing ends of said sections being arc-shaped and provided with intermeshing gear teeth, a constantly rotating shaft, a stationary shaft on which said firstsectionsare pivotally mounted near onevend, camsactuated by said shaftto oscillate said first-sections around their pivot point indifferent order, and levers controlled by said cams for longitudinally displacing said second sections in v proportion with the oscillating movement of said first sections; 4 I

V 9. In a machine of the class described, a reservoir for articles of uniform size and shape,-a plurality of runways arranged side byside and into which said reservoir empties, each of said .runways being divided into a firstand a second section, the opposing ends of said sections being arc-shaped and provided with intermeshing gear teeth, a constantly rotating shaft, two cams mounted on said shaft at an angular dis placement with respect to each other, a stationary shaft on which said. first sections are pivotallymounted near one end,,a connection between each of said first sections near'the other end and said cams, respectively, two pivotedlevers, rods connecting thefree ends of said levers with the arcuate I I ends of said second sections, a cam surface on each lever, two pivoted levers engaglng,

respectively, said camsurfaces, and a ,con-

nectionbetween each of said last mentioned;

levers and said cams, respectively. 7 a

10. In a machine of the class described,

a reservoir for articles vof uniform size and.

shape, a plurality of runways arranged side by side and into which said reservoir empties, each of said runways being divided into a first and a second section, guide plates rollers engaging the grooves of said cams,

respectively, twopivoted'levers, rods connecting the freeends of said leversw1th'the. arcuatef'ends of the guides of-said second sections, a cam surface .on each lever, two

pivoted levers engaging, respectively, said cam surfaces,and a roller carried by each of said last mentioned levers engaging, re-

said reservoir sloping towards said opening spectively, the grooves on said circular cams at points diametrically oppositethe points size vandshape, said reservoir having an opening, a plate provided with a plurality of'holes (provided below said opening, a run-' way lea ing to said plate, and meansfor longitudinally respect to said plate. 4

12. In a machine lot the character desize and shape, said. reservoir having an. opening, a plate provided with a plurality of holes provided below saidopening, a plurfali'tyof runways slidably mounted on said plate, and means for longitudinally OSCI]: lating said runways with respect to each other and said plate. a I I 4 13.. In a machine of the character de scribed, a reservoir for articles of uniformsize and shape, said-reservoir having an opening through which a number of said articles may be discharged, 'ajbottom for a plate provided withfa plurality of holes of different sizes provided below s'aidopenings, a runway of wedge-shaped cross-section slidably mounted on said plate, and means,

for longitudinally oscillating said, runway with respect/to said plate and for oscillating said reservoir. i a j I: 1

14. In a machine of the character de scribed, a reservoir for articles of uniform size and shape, a runway, a plate hav ng a plurality of openings between the end of said runway and said reservoir, a constantly rotating shaft, mechanism foroscillating said runway, a plurality of gauges in said 'runway, and means jointly controlled by said mechanism and runway for opening and closin said gauges. c v I '7 15. n a machine of the. character .described, a reservoir for articles of uniform 7 size and shape, said reservoir having an opening through which said articles may be discharged, a runway divided into two sections, a plate having a plurality of openings of difierent sizes betweenthelend of saidrunwayand the OPGIHHg-HI sald reservoir, means for slidably mounting the end of one ofsaid oscillating said runway with scribed, a reservoirfor articles ofuniforni lit) runway sections on said pla te,means for v .j

pivotally joining together said two runway sections, a constantly rotating shaft,{mechanism for oscillating in a vertical direction one of said sections and in a longitudinal direction both sections, a .gate'in one of said sections periodically opened" in response to the longitudinal oscillation thereof, and a second gate and a plurality of gauges infthe other section periodicallyopened in response to the, longitudinal displacement thereof" 16. In a. machine of". the 'character, d escribed, a reservoir, a runway nto wh ch said reservoir opens, said runway being; provided with a bottom having a plurality oi said plate with respect to said runway.

17.. ln a machine of the character described, a reservoir, a runway into which said reservoir opens, said runway being provided with a bottom having aplurali'ty of openings, a plate provided below said bottom having a plurality of openings registering with the openings in said bottom, mechanism for oscillating in a'vertical and longitudinal" direction said runway with respect to said reservoir, and means controlled by said mechanism for longitudinally displacing said plate with respect to said runway.

18. In a machine oi?" the characterldescribed, a reservoir, a runway into which said reservoir opens divided into a first and a second section, said second section being provided with a bottom having a plurality of openings, a gate covering one of said openings, a plate provided below said bottom having a plurality of openings registering withsome of the openings in said bottom, a bell crank connection'between said plate and the first section, a bell crank connection between said gate and said plate, and mechanism for oscillating "in a vertical direction said sections and longitudinally displacing said second section with respect to the first section;

19. In a machine of the character described, areservoirfor articles of uniform shape and size, runways leading-to said reservoir and through which a plurality of said articles may be simultaneously carried away therefrom, guides for each runway section confining an article thereon in, a predetermined position, the greatest width oi' said articlesbeing greater than'that of a runway, and means forsweeping oil the guides onto saidrunways article's'that'li'e 'on said guides.

20. In a machine of the character described, a reservoir for articles of uniform shape and size, runways leading to said reservoi'riand through which a plurality of said articles may simultaneously .be deposited" in a, receptacle, said runways bein- 'divided into a plurality of sections, guide plates for each runway section confining an article thereonin a predetermined position, mechanism-ior oscillating said runway sections'andres'ervoir'with respect to each other, mechanism mounted near said reservoir ior moving articles positioned on said guide walls onto the runways within said guide walls, and" a conmon source of power-from which bothsaid mechanisms are operated.

21z'ln a machine of the character described, a reservoir-tor articles of uniform. shape and size, runways leading tosaad reservoir and through which a plurality of articles may simultaneously be deposited in areceptacle, blades projecting between said runways nearsaid reservoir, and means tor oscillatingsaid blades.

22; In a machine of the character described, a reservoir forarticles of uniform shape and size, runways leading tosaid reservoir'and through which a plurality of said articles maybe simultaneously carried away therefrom, saidrunways being: divided into a plurality'oi' sections, guides for each run way section confining an articlethereon in predetermined position, a constantly rotating'shaft, mechanism operated by said shaft for oscillating said sections, plates projecting between the guides of adjacent runways, andmeanscontrolled by said mechanism for continuously" oscillating said plates:

' 23-. In a machine of the character, described, a reservoir for articles or uniform shape and size, runways leading tosaid reservoir and through which a plurality of said rticles may. be simultaneously carried away therefrom, said runways being divided into a plurality of sections, guides ioreachrum way section confining an article thereonin a predetermined position, a constantly rotatingshaft, mechanism oper-ated by said-shalt for relativelyoscillating two sections in a vertical direction and two sections in alongitudinal direction and-for oscillating-said reservoi'r, plates projecting cet'ween guides of adjacent runways, and means controlled by said mechanisln iorcontinuously oscillating c said plates.

' '24-. In a; machine of the character described, a reservoir for articles of uniform size and shape, a plurality of runwaysinto which said" reservoir discharges, means for 1 05 advancingsaidartic'les over saidrunways, a

receptacle for a number of said. articles, a

which said reservoir" discharges, means for advancing said articles. over said runways, arr-inclined platform.- at' the end oi; said runways, a guard between said platform and runways having notches registering with the runways for allowing but a: single; article at: a time to pass from a runway to saidplatform, a receptacle for a numberof said articles below: the end? oft-said platform, and mechanismz for delivering torsaidj receptacle from: said platform; only said number oi articles-at" a time. a y

26,111 a. machine oi. the character described, reservoirfor articles. of uniform size-aandshape, a plurality of runways into.

l advancing said articles oversaid runways, a

platform .at the end of said runways a- \lshaped guard between said platform and runways having notches registering with the runways, and a receiver pivotally mounted on the end of said platform' and provided with a bottom open on the free side ofsaid receiver and curved upon the other side to act asa stop for articles onsaid platform 10 a while said receiver is ina 'tilted-do'wngposii v tion.

I In testimony whereof, 'fifhavesigned my name to this specification this eighth uay 015- February, 1926.- I

' I WILLIAM F. HENDRY. v

Images