US2081944A

US2081944A - Grid pasting machine

Info

Publication number: US2081944A
Application number: US41584A
Authority: US
Inventors: Arthur D Lund
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-09-21
Filing date: 1935-09-21
Publication date: 1937-06-01
Anticipated expiration: 1954-06-01

Description

June l, .1937. A D LUND GRID PASTING MACHINE Filed Sept. 21, 1955 7 Sheefs-Sheet l June l, 1937. A. D. LUND GRID PASTING MACHINE Filed Sept. 2l, 1935 '7 Sheets-Shea?I 2 v una UH uuuhnhnun HTTORNET June l, 1937.

l A. D.. LUND GRID PASTING MACHINE Filed Sept. 2l, 1955 '7 Sheets-451199*l 5 muv June 1, 1931. A. D. LUND. 2,081,944

v GRID PASTING MACHINE Filed sept. 21, 1935 '7 sheets-sheet 4 .p BY

June 1, 1937. A. D. LUND 2,081,944

GRID PASTING I`l`1CJI'1Iu]v Filed sept. v21, 1935 r sheets-sheet 5 a a J, 43 4 Z 3 T 3 7 m s w w o m U, ,R @2.1M 5 L l 5 4-1 4 f r 1 M. W l 4 M 4 7 N U.. Wl l .l l I Il I 5 0 W 1H 1 |11 III n 4 7 ...1 9 w l. M 4 t b b o Y 5w d .n 0.1m u. o B o o m4/ o f 0 w o 4/ o @M IA n u 8 o .rLJ. o O 4 L o n INI! JIIIII -|.I|.||\ 1 7 z .l/f,l O 1 3 of m 9 7 Q m u 97 9. Il m un l Il M m .l w. 0 .0 1 m 4 1 m, m n u M n L June 1, 1937. A. D. LUND GRID PASTING MACHINE Filed sept. 21, 1935 '7 Sheets-Sheet 6 /m/fNro/i' E /STHUR D'. LUND H T TORNE Y June l, 1937. A. n. LUND GRID PASTING MACHINE Filed sept. 21, 1935 '7 Sheets-Sheet 7 Patented June 1, l 1937 UNITED STATES PATENT ori-ICE Arthur D. Lund, Minneapolis, Minn. Application September 21, 1935, Serial No. 41,584

34 Claims.

overthe Grid pasting machine as disclosed and claimed in my earlier copending application Ser. No. 726,744, filed May 21st, 1934, .and attention is directed to that application for a more detailed and complete description particularly of mechanisms and features which are here either omitted or` shown in less detail to avoid dupli-'.

cation or repetition of disclosure. The present application concerns itself primarily with structural features and combinations of devices which distinguish from those of the earlier applicationand will now be described in detail, reference being made to the accompanying drawings wherein like characters designate like parts in the various views, and in which- Fig. 1 is a side elevation of the machine, the left or operators end ofthe machine as shown in this view being considered, for purpose of con- Rvenience, in description, the front end.

Fig. 2 is a side elevation of themachine opposite to that shown in Fig. l. u y

Fig. 2a is a detail plan view of the rear or left end of Vthe machine as shown inI Fig. 2.

Fig 3 is an enlarged detail elevation' of the grid feeding unit, as shown at the left of Fig. 1, this unit being detached from remaining portions of the machine except for the driving shaft andpinion at the right end, which shaft and pinion are shown as on the section line 3-3 in Fig. 4.

Fig. 4 is an enlarged plan view of the front end of the machine, as shownat"'the left in Fig. l, but partly in section /asf'on the line 4-4 in Fig. 5.

Fig. 5 is a sectional elevation taken centrally 45 through a portion of the machine, as on the line and as indicated by the arrows 5-5 in Fig. 4.

Fig. 6 is a sectional 6-3in Fig. 5.

Fig. 7 is an enlarged detail section taken cen- ;,o trally through a portion of the machine, as on the line and as indicated by the arrows 1-1 in Fig. 4.

Fig. 8 is a sectional detail elevation on the line 3-3 of Fig. 7.

55 Fig. 9 is a sectional elevation similar to Fig. 8,

More particularly the invention presents a number of improvements detail elevation on the line.

but showing the feed mechanism adjusted to accommodate a different type of grid plate.

Referring to the drawings more particularly and by reference characters, I0 and ll designate heavy cast side walls of amain frame, which walls are rigidly connected by suitable cross beams and certain' of,the superstructure elements.` Secured in andv to the main frame I0-ll is a motor l2 for supplying power to the machine. The shaft I3 of this motor has a sprocket pinion I4 connected by chain vI3 to sprocket gear I 3 on one end of a shaft I1 which is journaled in and extends transversely through the main frame. At the opposite side of the machine theshaft I1 has a sprocket pinion I3 operating through sprocket chain I3 and sprocket gear 20 `to drive a transverse shaft 2| on which gear 20 is secured. Shaft 2l is also journaled tothe mainframe structure and has av sprocket gear 22, somewhat smaller than 20, which operates through sprocket chain 23 and pinion 24 to drive an upper shaft 25. The shaft 25 and 'an intermediate shaft 23 are journaled in bearing extensions of the paste receptacle, designated generally by numeral 21, and have power connection through

spur gears

28 and 23. 'I'he shaft 26 also has a sprocket pinion 30 which operates through chain 3l and pinion 32 to drive a shaft 33, iFig. 2) and .hasanother pinion op' erating through chain l34 and pinion 35 to drive a shaftl 36. All the working parts thus far described as well as those subsequently to be set' forth rotate or travel in the direction of the indicating arrows.

The shaft 33 has'a paste feed roller 31 within the paste chamber 21, which cooperates with an portion of which extends over-two

rollers

33 and 40 while the rear end passes about a drum or large roll `on the shaft 2l, thus receiving conveying power therefrom and transmitting it to the shaft 4| of roller 40, allas set forth in greatendlesspaste feed belt 33 (Fig. 5), the forward g er detail in my priorapplication. The shaft 4I y cross bar 43 which extends through slots 44', in

the receptacle walls,v and passes through. a plate 45 forming the front wall of the receptacle. This teries.

plate or front wall is consequently mounted for slight vertical movement with respect to the side walls and in conjunction with the paste feed roller 31. The purpose of this construction is to provide means to stop the machine should the normal paste feed be interfered with. Thus should a bolt, nut, or other hard object get into the paste receptacle it will, upon entering the thin discharge space between the roller 31 and the apron 38 (immediately over roller 39), lift the roller 31 above its normal feeding position and thereby will also lift the members 4 2, 43, and 45; and when this occurs a rod 46 will operate a circuit breaker 41 to stop the motor I2 and thereby stop'the machine until the obstruction has been removed. A spring 48a tends to return"v and maintain the paste feed roll 31 in its normal operative position.

The paste feed mechanisms thus described are substantially similar to those of my aforesaid application Ser. No. 726,744. An important improvement has been made,v however, and it relates to the means for dividing the paste layer centrally into two lateral ribbons as-it passes between rollers 31 and 38 and is conveyed down with the belt 38 to the grid filling zone between roller 40 and its cooperating roller 48 mounted on shaft 49. It will be noted, with particular reference to Figs. 8 and 9, that the grids to be filled are cast in pairs and that each two grids 50-5I are integrally connected by a medial web or strip 52, which, however, is cut or punched away after the filling operation has been completed and before the grids are placed in bat- It is lof course only necessary to lill the paste into the interstices between the wires and ribs bounded by the rectangular border or frame of each grid unit, and any paste notso inserted but otherwise adhering to the plate is wasted and frequently becomes objectionable in the treatment and subsequent manipulation of the plate. Hence it is importantl to prevent the feed or application of paste to the connecting webs 52 as the plates pass into the pasting zone intermediate rollers 41and 48. To this end the paste feed roller 31, in receptacle 21, may be provided with a central annul-ar rib (as in application Ser. No. 726,744) to remove the central paste strip. This is not always satisfactory, however, because when the roller 31 is vertically adjusted,`under action of a control nut 53 on bar 46, to regulate the thickness of the paste layer, the annular rib will raise with it and consequently will be spaced from the feed belt 38 and will not displace or entirely remove the central paste strip. To overcome this objection I have in the present instance provided a central paste strip remover in the form of -a narrow shoe 54 (Figs. 4 and 5) formed at the lower end of a bar 55; and this shoe and bar in preference to being attached to and vertically adjustable with plete as end* roller 31, extends up between the plate 45 and a rigid cross beam 56 for adjustable attachment by a bolt 51 to a bracket 58 rigidly Vsecured to the paste receptacle 21. Thus the shoe 54 will retain its xed adjusted position with respect to the paste bearing. surface of the belt 38 regardless of vertical adjustments effected manually through nut 53 or automatically by an obstructing object wedged under the roller 31. The shoe 54'ts in a slot 58 in av plate 60 which is secured to the lower end of wall plate 45 and has for its purpose to scrape 'the surplus paste from the underside of the roller 81. This plate 60, attached t9 the platev 45, is adjusted vertically with it and with the roller 31. Hence when paste layer thickness adjustments are made, by turning nut 53, the plate 60 Will follow with the roller 31 so that independent adjustment will be unnecessary. It may here be noted that the bar 55 is preferably clamped to bracket 58 in such a manner that its lower end is sprung slightly forwardly (to the left in Fig. 5), thus causing the shoe 54 to press against the plate 6D, the object being to thereby maintain the shoe more rigidly in operative position.

The shaft 49 of roller 48 is journaled at its ends in adjustable bearing brackets 6l, carried by a cross bar 62 and are also. yieldable under the action of springs 63 so that roller 48 will be yieldably maintained in operative position with respect to roller 40.- Shaft 49 is driven from shaft 4| through spur gears '64 and 65 at one side of the machine (Fig. 1). Gear 64 also operates through an idler 66 and pinions 61 and 68 to rotate a pair of primary grid

plate feed rollers

68 and 10; and operates through an idler 1 I and pinions 12 and 13 to rotate secondary grid plate feed rollers 14` and 15. Wherever possible the

rollers

68, 10, and 15 have their shaft ends mounted in yieldable bearings such as 15 so that the rollers will always be urged and maintained in operative positions under spring pressure. The roller 69 is provided at its end, opposite from pinion 61, with a pinion 11 which meshes with a large spur gear `18 (see Figs. 2, 3, and 4) to drive the grid feed mechanism subsequently to be detailed.

Attention is now redirected to the grid plate advancing and pasting mechanism particularly as shown in Fig. 5, wherein it will be seen that the pairs of

rollers

69 and 10, 40 and 48, and 14 and 15 all cooperate to form a central vertical passageway for the grid plates,y and all rotate under power and at uniform rates of periphery speed to advance the plates downwardly through the pasting units. Cooperatively associated with these six rollers I further provide a series of guide bars 18, 80, 8|, 82, 83, and 84, arranged in pairs and extending the full length of the adjacent rollers. Y The bars of each pair have opposed guide faces spaced apart equal distances and cooperate with the rollers to form a substantially continuous vertical guideway for the plates.

The upper edges of the guide bers 'lsso arel inwardly beveled to form a tapering throat 85 for the edgewise reception of thel grid plates 50-5I which are fed successively and vertically thereinto by a pair of conveyor discs 86 mounted on a shaft 81. The discs also operate to initially urge the plates down into engagement with the'rollers 69-10 as will presently be described. It is here sufiicient to note that the grid plates having been received in the throat 85 and passed down between guide bars 19--80 to the rollers 69--10, are gripped by the latter and positively but at uniform speed, progressed dowm between the guide bars 8I-82 to the paste applying zone. As the plates reach thev horizontal plane of

rollers

40 and 48 they pass inte the guide space between bars sanu s4, the upper end edges of which are arcuately beveled,4 as shown. Before vengaging these bars, however, the plates are filled with the two ribbons of paste which travel down over the incline 38a of the belt 38, and such paste, being of a semiplastic' consistency, immediately lls the grid plate interstices. In fact'the paste has a tendency to pass through beyond vthe vsurface limit of the grid but this tendency is offset by the counteraction of roller 48 which acts to compress the Cil paste in the grid and m11 it smooth. rf there should be an overfeed of paste the excessive paste will build up until it passes forwardly over the roller 48 and falls down on a plate 88 which may,

but also protects the filled grids against the tendency of the roller and apron to pull the'paste out of the plates as they pass the median line or common plane between theA centers 4| and 49. This has been found inpractice to constitute a distinct advantage over my earlier machine arrangement pertaining to this feature.

- As the fllled grids passdownwardly through the guide bars 83-84 they are engaged by the rollers 14--15 and lowered to a pair. of conveyor chains 89 which engage the lug extensions 90 and carry the gridsaway for further treatment and use. To prevent the grids from dropping with ajar onto the chains 89 I provide a. pair of yieldable retarder devices 9|, described 'in detail in my copending application Ser. No. 726,744.

lIt is occasionally necessary to entirely open the grid plate passageway from throat 85 to retarder 9|, for purpose of cleaning, repairs, replacements,

' etc., and it is also desirable to provide means for adjusting the size of the passageway to accommodate different sizes or thicknesses of grid plates. For these reasons the guide bars 89, 82, and 84 are rigidly secured to and the rollers 10,

48, and 85 are journaled in the side walls of al carriage unit 92 which is mounted for reciprocating movement longitudinally of the main frame. To -adjustably mount the unit 92 I. provide it with laterally projecting iianges 93 which are slidable in channels formed byfrecesses in the upper ends of the' base walls IU-I l, and cover plates 94 se-A cured to the base walls by bolts 95. The channels for the flanges 93 are preferably restricted vertically so that when the bolts 95 of the cover' strip 94 are securely screwed down they will clamp the flanges 93 in the side wall recesses, and thus retain and rigidly secure the\carriage unit 92 in adjusted positions.

At its forward end the carriage unit 92 is provided with lugs 96 in which are adjustably secured set screws 91, the purpose of which is to contact with the front end edges of the walls |0-| I, to thereby adjustably limit the forward motion or movement of the carriage 92 with respect to the I main frame of themachine; and it is through this adjustment that the passageway for the grids through the rollers and guide bars, as shown in Fig. 5, is adjusted to accommodate different thicknesses of grid plates. The carriage unit is slidably adjusted when the bolts 95 have been released, by a hand lever 98, which isl mounted on a shaft 99 journaled in the main frame structure |0| I, and this shaft at a point intermediate its ends is provided with a crank |00 which is in turn connected by a link |0| to a shaft |02 secured in the carriage unit.

It will now be seen that by loosening the clamping bolts 95 the entire carriage may be shifted back and forth by manipulating the hand lever l 98, and to theextent permitted by the stop bolts 91 in one direction; and permits ample movement in the forward or opposite direction to permit of cleaning and repairs in the devices whichI make up the grid plate passageway to and through the pasting zone. 1

Attention is now directed to the grid plate feed mechanism by which the plates are automatically conveyed into the throat 85 from a supply source, and by which the feed speed of the plates is properly controlled so that there willbe no gap between them through the pasting area. This mechanism also provides for the elimination of plates which'are oversized, as to thickness, and effectivelystops the power application in certain emergencies, whereby no destructive damage will be incurred.

When the carriage 92, which supports the plate feed mechanism, is in its rearward or operative position, the pinion 11 meshes with gear18 to supply power to the feed mechanism.v The gear- 18 is trunnioned as at |03 (Fig. 4) for rotation on one end of the shaft 81, and this shaft is journaled in bearings |04 on the side walls of the carriage. Secured to the outer side of the gear 18 is an annular steel ring |05, the inner face of which is frictionally engaged by. a pair of shoes |08 which are fulcrumed as at |01 to the ends of and this pinion operates a sprocket chain I2 to drive a sprocket gear ||3, fixed on a shaft I4 which is journaled to the carriage 92 by adjustable bearings 5. An adjustable/pinion ||8 (Fig. 2) serves asa tightener or slack adjuster for chain ||2.

Immediately adjacent to theinner faces of the carriage (92) sidewalls the positively driven shaft ||4 is provided with a pair of sprocket gears I1,

about which pass sprocket chains ||8. The forward ends of these chains pass about sprocket gears ||9 on stub shafts |20 in the carriage side walls.` The upper runs of the chains ||8 travel in longitudinal channels |2| formed in strips |22 secured to the carriage walls, butit should be noted, with particular reference to Figs. 3, 5, 7, 8, and 9. that 'the chains project slightly above the channels so that they can engage the plate lugs 90 and carry the plates suspended by the lugs and without contact with the stripsi At their rear ends the strips support a shelf |23 upon which a stack of grid plates may be placed before beim;r inserted in the f eed mechansm by the operator. When the machine is in operation the operator successively inserts groups of plates between the chains ||8 and in transverse vertical position so that the lugs 90 will rest upon the chains. rearwardly the plates are carried through the selector device and up to a position where their upper ends will have peripheral contact with the discs 88, while their lower ends conveniently stop against an angle iron stop I24adjustab1y secured (Fig. '1) as at |25 to a partition member |28 of the carriage frame.

As the chains then travel,

notches H29, of suicient depth to successively engage under the edge of one plate at a time,

and thereby lift and carry over the plates, as clearly illustrated in Fig. '1. The shaft is mounted in vertically adjustable bearings and |3| so that it may be secured in two or more positions when different types of plates are to be treated. Thus the shaft is placed in a relative low position, as indicated in ligs.y l, 2, 3, 5, '1, and 8, When plates are being conveyed which have the grid lugs 90 projecting from upper corners of the grids; but when the lugs, such as 90a in Fig. 9, are disposed below lthe upper corners so that the plates travel at a higher level, then it is-necessary to correspondingly raise shaft |21 so that it will have proper engagement with the bottom plate edges. One end of the shaft |21 has a sprocket gear |32, driven by chain |33 from a sprocket gear |34 fixed on end of shaft 81. Thus thespeed of shaft |21 is synchronized with that of shaft 81, and when the discs 86 are retarded or stopped, as previously noted, then the shaft |21 will accordingly be retarded por stopped, so that at no time will the plate feed speed of the shaft |21 exceed the conveying speed of thediscs. To compensate for vertical adjustments of the shaft |21 I provide a slack and effective length adjuster'for the chain |33 in the form of an idler pinion |35 carried by an adjustable bracket |36 (see Fig. 3).

Directly above the shaft |21 the strips |22 are provided with stop lugs |31 against which the lugs 90' of the grid plates stop at approximately the same instant as the lower edge of the grid plate comes into contact with the notches |29 of the shaft hubs |28; and the grids will ac-v cumulate against the stop lug |31, as indicated in Fig. '7, until the shaft |21 successively raises the grid plates, at which time they are carried over the stop lugs |31 and again carried toward the discs 86. Forwardly of the stop lugs |31 and ata slightly higher elevation, are a pair of latches |38 'which are adjustably secured as by bolts |38 to arms |40 of a lever |4| with which the two arms |40' are integral. This lever 4| extends across the carriage unit 92, as shown `in Figs. 4, 8, and 9, and is pivotally secured thereto for tilting movement as at |42. Thelatches |38 are normally held down in operative position under the act-ion of gravity, supplemented by a spring |43. The lever |4| has an arm |44 which is operative when depressed or moved downwardly to press a button of a switch box |46 to break the circuit to the motor I2 and thus stop the machine.

It will be noted with particular reference to Figs. 4, 5, and '7 that the latch |38 is adjusted to such a position that there will be a gap |41 between its rear end and the forward edge or face of the lug |31; and this gap is of such a size (longitudinally of the machine) that it will permit a grid plate of normal thickness to pass upwardly over the stop lug |31 and immediately behind the latch |38 so that it will not engage or lift the latch |38. If the thickness o f the grid plate, however, is greater than the normal thickness of grids intended to be pasted, then such plate will engage under one or both of the latches |38 and thereby tilt the lever l4lsufl1ciently so that the arm |44 will press the button |45 -of the switch box |46 -and thereby stop the machine until the oversized grid plate has been removed and normal operation restored.

At |48 in Fig. '1 I have indicated a grid plate vwhich is thicker than the other plates, and

which will be operative upon reaching the stop lug |31 and upon being elevated by the shaft |21 to engage the latch |38 and break off the current supply to the motor. It will be noted that the arm |44 of the lever |4| has a yieldable presser pin |49 for contact with the switch button |45 so that the lever may tilt further forwardly than is necessary to merely actuate the switch button, if such action becomes necessary. It will of course be obvious that by adjusting the latch members |38 forwardly or rearwardly with respect to the lever arms |40, the machine may readily be adjusted to accommodate any particular type of grid plate, and will give absolute Aplates are preferably provided immediately adjacent the discs, as indicated in Fig. 7.

Another purpose for the stop lugs |31 is to prevent an over-accumulation of plates adjacent the pickup discs 86, which would have the tendency to unduly retard the disc movement. It will be remembered that the discs 86 are frictionally driven through the shoes |06, and this for the specific purpose of permitting the discs to be slowed up or if necessary stopped when clogging or other resistance so requires; and as the grid plates are always supported by their lugs 90 on the chains H8, they must permit the chain to` slide under the lugs when the plates are held stationary. And this of course increases the frictional resistance of the grid plates on the disc peripheries to a point .where such resistance might easily stop the plates should there be a sufficient accumulation of grid plates immediately in front of the discs.

At regularly spaced intervals about their peripheries the discs 86 are provided with notches 50'which are each of a length slightly greater than the vertical dimension of the grid plate lug 90, so that the lug may pass entirely into the notch under the action of the conveyor chains I8, and when one pair of notches |50 is in proper position to receive the opposite lugs 80 of the grid plate immediately adjacent the discs. The plates 86 are disposed immediately adjacent to the chains H8, and the notches |50 are of such a form that they will engage under. the lower edges of the plate lugs and lift them up and over the shaft 81, while permitting vthe grid plates to retain their vertical positions until dropped into the throat 85. After the grid plates successively pass over the center of the shaft 81, however, they drop down into the other and slightly larger ends ofv the notches |50 so as to be less liable to disengage therefrom until the proper disengaging position has been reached. It will be vnoted that as each plate approaches its nal vertical position over. the throat 85, as indicated by the dotted lines at the left in Fig. 7, its upper edge proper entry into the throat 85. Without somev such means it has been found that the plates will occasionally swing over in front of the guide bar 80 and thus interrupt the proper operation of the machine.

Theguide plate is attached to a'bar |52 which is secured in a pair of bracket extensions |53 of the transverse beam 56. 'I'he outer ends of the bar |52 oscillatably support a pair of depending arms |54 which engage against the rear edges of the discs 86 for the purpose of holdingthegridplatelugsintherecesses |50 of the discs 86 until they are ready to be discharged therefrom. The arms |54 have rearward extensions |55 connected to springs |56, with a. result that the arms |54 are yieldably retained in contact with the plate carrying discs.

From the foregoing it will be. seen that the grid plates will be positively engaged in the disc notches |50 until the notches reach the lowermost extremities of the arms 54, at which time the grid plates proper will b`e in a position well down in the passageway between the'guide bars` 19 and 80. As the discs then continue to rotate the notches |50 will discharge the grid plate lugs, f

but in order to prevent any possible sticking of the lugs in the notches I have provided the rear yso end of the carriage 92 with a pair of xed cams |51 which will engage the forward facesl of the plate lugs, and discharge them from the disc notches. It may here be noted that the normal plate feeding speed of the feed rolls 69 and 10 is somewhat slower than the plate feeding speed of `the discs 86, with a result that when a plate is conveyed into the throat 85 by the discs 86 the lower edge of said plate will contact with the upper edge of the preceding plate, which is then in conveying engagement with the

rollers

69 and 10. Consequently the plate passing into the throat 85 lcannot move downwardly as fast as the discs 86 would normally be driven by the shaft 81'; but inasmuch as the notches |50 are sufciently deep to entirely Vreceive the. plate lugs, the

shoulders I50a at the upper, ends of the down' warly moving notches will engage the'lugs and press the engaged plate into rm contact with the upper edge of the preceding plate. And as the speed of the plates passing down through the

rollers

69 and 10 is less than the normal feed speed of the shaft 81, the shoes |06 will slip in the ring |05 sufficiently to permitthe disc movement to be slowed up, and as the disc movement is slowed up the feeding speed of the shaft |21 is v also retarded. Under these circumstances the plates moving down into the pasting zone will be traveling at a uniform rate of speed, and as the plates delivered from the discs are always being crowded against the plates in the passageway there will be no interruption in the continuity of feed, and there will be no gaps or spaces between any two adjacent grid plates.

As the grid plates pass downwardly lthrough the pasting area they are, as previously lmentioned, discharged between rollers 14 and 15 and through the friction devices 9| so that they will drop between the conveyor chains 89, upon which chains the opposite projecting lugs 90 of the plates will rest in the same manner as they were previously carried on the ychains ||8. The two transversely spaced'conveyor chains 89 are supv ported at their forward ends on sprocket gears |58 of shaft |59 journaled in the base of the machine; and the rear ends of the chains pass over sprockets |60 secured to stub shafts |6| lournaled in frame extensions |62 of the frame castings |0 and Adjustable idler pinions |63 are arranged to take up or adjust the slack in the conveyor chains 89. The shaft |59 has a sprocket |64 driven by a sprocket chain |65 from a sprocket-pinion 66, which is in turn driven from lshaft I1 throughspur gears |61.

One of the stub shafts |6| has a small spur pinion |68 'which meshes with and drives a second but larger pinion I 69. This second pinion meshes withand drives a spur gear on a shaft I1| also journaled in the frame extensions, |62. The shaft |1| is provided within the extensions |62 and immediately adjacent to the conveyor chains 09 with a pair of discs I12,which rotate with the shaft |1| and serve to engage under the lugs of the grid plates and transfer them from the conn veyor 89 to a second pair of conveyor chains |13 which are disposed in substantial alignment with the chains 89, but slightly spaced beyond the rear ends thereof.

The chains |13 operate over sprocket gears |14 which are mounted on stub shafts -|15 in a con- .veyor frame |16 suitably supported either by the Athe conveyor 89 to the conveyor |13 while maintaining a'uniform spacing between the grids, and regardless of the relative speeds of the two conveyor systems. n

'I'hus if the conveyor 89 travels at a relatively faster speed the'plates discharged from the pasting area will be spaced a considerable distance apart, possibly from eight to' ten inches. The conveyor |13, on the other hand, may travel'at a very slow rate of speed, but the plates will be transferred to it at a uniform rate, and consequently they will be much more closely associated or grouped on the conveyor |13, but still'will have a uniform spacing, and such spacing may not be more than a'half4 an inch to one inch, if such spacing is desired for instance in the drying Ovens.

of the paste material, and a supply of grid plates is in readiness on the shelf |23. The motor I2 is now started by closing a starter switch, preferably' located in the switch box |46, and such switch may be closed by pressing a starter button |18. With the motor running, power is conveyed through the motor shaft I3, sprocket pinion I4, sprocket chain I5, gear I6, shaft I1, pinion I8, chain I9, and gear 20, to the shaft 2| which carries thel rear end of the belt 38 ,and thereby moves the beltin the direction indicated by the arrows in Fig. 5.

The shaft 2| then supplies power to the paste feed roll 31 through gear 22, chain 23, gear 24,

shaft 25, gear 28, gear 29, shaft 26, gear 30, chain 3|, and gear 32 on the shaft 33 of the said feed roll. 'I'he roller 31 and apron 38 now cooperate to compress a layer of paste on the belt, and such paste layer thenmoves down over the incline- 38a to the paste applying area between the

rollers

40 and 48. Meanwhile the shoe 54 is in contact with the belt 38 to remove a central strip of paste in order that active material may not. be applied to the4 connecting web 52 between the grid units. The thickness of the paste layers thus conveyed to and forced into the grid interstlces may be regulated by turning the nut 53 which controls the vertical position of the roller 31 and the adjusting plate 60. Should any hard object get into the paste material in the receptacle 21 it will, upon coming into engagement under the roller 31, wedge the latter upwardly and thereby operate through

members

45, 43, 46, and 53, to release the circuit opener 41 and thereby shut off the current supply to the motor until the object has been removed. Thus such an obstruction will stop the operation of the machine in time to prevent any destructive damage.

The so called secondary grid plate feeding mechanism which conveys the grid plates downwardly from the receiving throat 85 through the pasting area, and to the conveyor chains 89, is driven from the roller 40 at the forward end of 2o the apron 38, as shown in Fig. 5. The shaft 4| of this roller 40 is provided at one side of the machine, as shown particularly in Fig. l, with a spur gear 64 which meshes with and drives two idler pinions 66 and 1|,A and also meshes with 25 and drives a gear 65 on the shaft 49 of roller 48, this shaft being journaled in adjustable bearing members 6| on the carriage 92. As the gears 64 and 65 are of similar diameters, the

rollers

40 and 48 will be driven at similar speeds; and

to secure the best results these two rollers should have their axes disposed in a common horizontal plane. The idler pinion 66 drives the

rollers

69 and 10 through intermeshing pinions 61 and 68,

and the idler pinion 1| drives the lowermost feed rollers 14 and 15 through intermeshing pinions 12 and 13. Thusl all of the rollers 69--10, 40

and 48, and 14-15 all successively function to grip the downwardly moving grid plates and convey them at a predetermined and constant rate of speed through the feeding area and in proper synchronized relationship to the feeding speed of the paste apron 38.

supplementing these grid conveying rollers are provided a series of guide bars 19, 80, 8|, 82, 83, and 84 arranged in pairs and spaced in such a manner as to form a vertical passageway in conjunction with the rollers so that the plates will be properly guided and conveyed while traveling through such passage.

The primary grid plate conveying mechanism has both positively and frictionally driven parts to the end that the grid plates may be initially 4conveyed in the most eiilcient and practical manner to the receiving throat 85 of the secondary conveyor mechanism. To this end the roller 69 of the secondary conveyor mechanism operates through the pinion 11 to drive the gear 18 which is rotatable on the shaft 81. This gear operates through the sprocket pinion ||0' and chain ||2 to drive the large gear 3 on shaft H4 to positively actuate the conveyor chains ||8 which initially receive the grid plates. The gear 18 then functions through the friction shoes |06 to frictionally or yieldably transmit power to the shaft 81 and discs 86, and thereby through the pinion |34, chain |33, and pinion |32 tov operate "the selector shaft |21.

As the grid plates now move rearwardly on the conveyor chains ||8 they stop against the lugs |31 while their lower ends are brought into engagement with the notches |29 of thehubs |28. The shaft |21 now successively lifts the grid plates, permitting them to pass over the lugs |31 and into peripheral contact withthe discs 86. Should an oversized plate get into the group,

into the notches |50, which will then lift the grids from the conveyor H8 and carry them over to a position where they will be guided into the throat of the secondary feeding mechanism. To assist in properly conveying and guiding the plates the guide plate |5| acts upon the upper edge portions of the grid plates and swings their lower ends into the throat 65. As the grid feeding speed of the grids 86 is somewhat greater than the normal conveying speed of the secondary conveyor rolls, the lower edge of the grid passing into the space between guide bars 19 and 80 will contact with the upper edge of the preceding plate; and when this occurs there will be a reaction through the upper plate causing the latter to engage againsttheshoulders |50a of the disc notches, and thereby resist the normal movement of the discs. This resistance is carried back to the shoes |06 which will then slip within the ring |05, permitting the required interruption or slowing down of the disc movement. While this resistance reaction is being transmitted it is necessary that the grid plate lugs be retained in proper position in the notches |50, and to this end I have provided the yieldably vmovable arms |54 which act against the rear edges of the discs, and thereby insure proper retention of the lugs in the disc notches. When, however, the grid plate being conveyed is sufliciently far down in the passageway o-f the secondary feeding mechanism sok that 't will be rmly gripped and held by the "con eyor rolls 69 and 10, then the grid plate lugs will be positively disengaged from the disc notches |50 through the action of the stationary lugs |51 carried at the rear end of the carriage 92.v

As the grid plates move down into the paste feeding area immediately above and between the

rollers

40 and 48, and below the guide bars 8| and 82, the paste is forced into the grid openings and is firmly pressed in place through the action of the roller 48 and the portion of the apron 38 which travels over the roller 40, and as the filling is thus completed the plates travel down through the guide bars 83 and 84 for delivery to the conveyor 89. Inasmuch as the upper edges of the guide bars 83 and 84 are arcuately recessed and tapered so as to project to the same elevation as the shaft centers 4| and 48, they will receive the grids at exactly the proper instant so that the succeeding surface movement of the roller 48 and belt 38 will not have a tendency to withdraw the paste from the plates, Being formed in this manner the bars 83 and 84 also serve to effectively shave or scrape the belt 38 and roller 48 so that they willbe clean as they pass downwardly from the pasting area.

As the plates are delivered to the conveyor 89 they travel. rearwardly tothe .frame extension |62, the conveyor being driven from shaft I1 through the spur gears |61, the sprocket gear |66, chain |65, and the sprocket |64 on shaft |59. As thegrids leave the end of the conveyor chain 89 the plate lugs immediately engage the pesacchettiv ripheral edges oi' the discs Il which then carry them over and deposit` them upon the conveyor |13.

It is understood that suitable modifications may be made in the structure as disclosed, provided such modications 'come within the spirit and scope of the appended claims. Having now therefore fully illustrated and described my invention, what I claim to be new and desire to protect by Letters Patent is:

1.111v a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste. to the plates while progressing through the passageway, a horizontal plate conveyor, and a rotatable carrier fo'r removing the plates from the conveyor and 'feeding them into the passageway. 2. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates while progressing through the passageway, a horizontal plate conveyor, and a rotatable carrier disposed between the .conveyor and passageway for lifting the plates from thev conveyor,

and depositing them edgewise into the passageway.

, 3. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates while progressing through the passageway, a -conveyor for conveying plates toward the passageway in vertical positions, a rotatable carrier for removing the platesirom the conveyor and carrying them while still in vertical position to a delivery position` into the passageway.

4. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the: plates while progressing through the passageway, a conveyor for conveying plates toward the passageway in vertical positions, a rotatable carrier for removing the plates from the conveyor and carrying them while 4still in vertical' position to a delivery position into the passageway, said rotatable carrier having peripherally spaced means for successively engaging plates advanced by the conveyor. y 5. In a. grid plate pasting machine having-a passageway for the movement of the plates therethrough, means for applying paste to the plates while progressing through the passageway, a conveyor for conveying plates Atoward the passageway in vertical positions, a rotatable carrier for removing the plates from the conveyor and carrying them while still in vertical position to a delivery position into the passageway, said rotatable carrier having peripherally spaced means ior4 successively engaging plates advanced bythe conveyor, and said conveyor being operative to yieldably urge vthe plates thereon into contact with the carrier.

6. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates while progressing through the passageway, a rotatable carrier for lsuccessively conveying plates to the passageway from a position spaced from the plane thereof and for urging them thereinto, and means for yieldably rotating the carrier whereby resistance to plates entering the passageway will retard the carrier movement.

'7. In a grid plate pasting machine having a passageway ior the movement of the plates therethrough, means for applying paste to the plates carrying them up over the axis of the carrier while progressing through the passageway, a rotatable carrier having peripherally spaced notches for engagement by the plates and for successively advancing plates to the' passageway, and cam acting means lfor positively disengaging the plates from the notches after the plates have moved a predetermined distance into the passageway.

8. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates while progressing through the passageway, a rotatable carrier having peripherally spaced notches for engagement by the plates and for succes-` sively'advancing plates to the passageway, and means coacting with the 'carrier to insure retention of the plates in the notchesuntil the plates have advanced to a predetermined delivery position with respect to the passageway.

9. In a grid plate treating machine having a vertical passageway for rthe movement therethrough of grid plates having lateral extensions, a conveyor engageable with said extensions to convey the plates in vertical positions toward the passageway, a carrier for transferring the plates from the conveyor and delivering them edgewise into the passageway, said carrier comprising a pair of rotary members having spaced notches for engaging said lateral plate extensions and supporting the plates thereby. l

l0. In a grid plate treating machine having a vertical passageway for the movement therethrough of grid plates having lateral extensions,

a conveyor engageable with said extensions to convey the plates in vertical positions toward the passageway, a carrier for transferring the plates from the conveyor and delivering them edgewise into the passageway, said carrier comprising a pair of rotary members having spaced notches for engaging said lateral plate extensions and supporting the plates thereby,` said extensions serving as supporting pivots to permit the plates to hang in vertical positions as they pass overI the `carrier axis and to discharge positions with respect to the passageway.

11. In a grid plate treating machine, a plate passageway having an upwardly flared plate receiving opening, a carrier disposed adjacent the throat and for rotation on a horizontal axis, means at the periphery of 'the carrier for laterally suspending the plates and permitting them to swing and retain substantially vertical positions while being carried over said axis, and means for engaging the plates as they approach a position over the opening to guide them edgewise thereinto.

l2. In a grid plate pasting machine, a pair of parallel cooperating rollers between which the plates pass and by which the paste is pressed into the plate from opposite sides, means for applying paste to 4the plates before they pass through the rollers, and a pair of spaced guidev plates for receiving the plates acted upon by the rollers, said guide `plates having tapered edges terminating substantially at the plane\through the axes of the two rollers.

' 13. In a grid plate pasting machine, a pair of l' parallel cooperating rollers between which the plates pass and by which the paste is pressed into the plate from opposite sides, means for. apply-` ing paste to the plates before they pass through the rollers, and a pair of spaced guide plates for receiving the plates acted upon by the rollers, said guide plates having tapered edges terminating substantially at the plane through the axes of l ing said ribbon centrally into two strips one for the grids at each side of the row.

l5. In a machine for pasting grid plates having two laterally arranged grids to a plate, thc combination comprising means forming a passageway for a row of plates, means for forming a continuous ribbon of paste for aplication to the grids in the passageway, and means for removing a longitudinal strip of paste from the ribbon before the paste is applied to the row of 2o plates.

16. In a grid plate pastingmachine having a passageway for the movement for the plates therethrough, means for applying paste to the plates in the passageway, a conveyor for convey- 25 ing plates toward the passageway, and a transferring device movable upwardly adjacent the delivery end of the conveyor to successively remove the plates therefrom, and movable downwardly adjacent the passageway to discharge the 30 transferred plates thereinto.

17. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates in the passageway, a conveyor for conveying plates toward the passageway, and a transferring device movable upwardly adjacent the delivery end of the conveyor to successively remove the plates therefrom, and movable downwardly adjacent the passageway to discharge the trans- 40 ferred plates'thereinto, said transferring device having means engageable with upper parts of the plates and permitting tilting of the latter whereby the plates will be transferred in substantially vertical positions.v

45 18. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates in the passageway, an Yendless conveyor having a run movable toward the passageway 50 and for supporting grid plates thereon, a transferring device having a portion movable up'- wardly adjacent the conveyor to remove plates therefrom and deliver them to the passageway, said device having frictional engagement with 55 and serving as a stop for an accumulation of grid plates on the conveyorvwhile permitting the conveyorto continue its movement.

19. In a gridfplate pasting machine having a passageway for the movement of the plates 60 therethrough, means vfor applying paste to the plates in the passagewayyan endless conveyorA having a run movable 'toward the passageway and for supporting grid plates thereon, a transferring device having a portion movable upward- 65 ly adjacent the conveyor to remove plates therefrom and deliver them to the passageway, said device having frictional engagement with and serving as a stop for an accumulation of grid plates on the conveyor while permitting the con- 70 veyor to continue its movement, and means for limiting the number of accumulatedl grid plates on the conveyor to thereby restrict the -frictional resistance of such accumulated grid plates on the transferring device.

75 20. In a. grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates in the passageway, an endless conveyor having a run movable toward the passageway and for supporting grid plates thereon, a trans- 5 ferring device having a portion movable upwardly adjacent the conveyor to remove plates therefrom and deliver them to the passageway, said device having frictional engagement with and servin as a stop for an accumulation of grid l0 plates Yon the conveyor while permitting the conveyor to continue its movement, and means for limiting the number of. accumulated grid plates on the conveyor to thereby restrict the frictional resistance of such accumulated grid plates on l5 the transferring device, said limiting means comprising a member disposed in advance of the transferring device for restricting the grid .plate movement with the conveyor, and a release mechanism associated with said member and operated in synchronism with the transferring device.

21. In a grid plate pasting machine having a passageway for the movement of .the plates therethrough, means for applying paste to the plates in the passageway, an endless conveyor having a runv movable toward the passageway and for supporting grid plates thereon, a transferring device having a portion movable upwardly adjacent the conveyor to remove plates therefrom and deliver them to the passageway, said device having frictional engagement with and serving as a stop for an accumulation of grid plates on the conveyor While permitting the conveyor to continue its movement, said conveyor comprising parallel chains laterally engageable with the plates in a manner permitting the plates to be carried in suspended positions therebetween, and said transferring device comprising a pair of side members associated with and adjacent to the respective chains. 22. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for` applying paste to the plates in the passageway, a conveyor for conveying plates toward the passageway, a transferring device for transferring plates from the conveyor to the passageway, a stop member associated with the conveyor to restrict the movement therewith of grid plates carried thereby, and a release mechanism. for intermittently releasing grid plates with respect to such stop whereby such released plates may continue under the conveyor action toward the transferring device. v

23. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates in the passageway,V a conveyor for conveyingy plates toward the passageway, a transferring device for transferring plates from the conveyor to the passageway, a stop member associated with the conveyor to restrict the movement therewith of grid plates carried thereby, and a release mechanism for intermittently releasing grid plates with respect to such stop whereby such released plates may continue under the conveyor action toward'the transferring device, said release mechanism comprising a rotatable member having peripherally spaced means for successively engaging the plates on the conveyor and lifting themover the stop member.

24. In a grid plate 'pasting machine having a passageway for the movement of the plats therethrough, means for applying paste to the plates in the passageway, means for supporting a sup-` ply of grid plates at `a point spaced from the receiving end of the passageway, a rotatable carrier disposed between the supporting means and the passageway and operative upon being rotated to successively lift the plates from the said vsupply, convey them to, and deliver them into the receiving end of the passageway.

25. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the .plates l0 in the passageway, means for supporting a supply of grid plates at a point spaced from the receiving end of the passageway, a rotatable carrier disposed between the` supporting means and the passageway and operative upon being rotated to successively lift the plates from the said supply, convey them to, and deliver them into the receiving end of the passageway, said carrier comprising a pair of transversely spaced wheels having clrcumferentially spaced, peripheral notches adapted to tiltably receive and support' portions of the plates.

26. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates in the passageway, means for'supporting a supply of grid plates at a point spaced from the receiving end of the passageway, a rotatable carrier disposed between the supporting means and the passageway and operative upon being rotated l tov successively lift the plates from the said `supply, convey them to, and deliver them into the receiving end of the passageway, said carrier comprising a pair of transversely spaced wheels having circumferentially spaced, peripheral notches adapted to tiltably receive and support portions of the plates, said wheels being operative to exert edgewise pressure on the plates as they enter the passageway so as to urge the plates thereinto.

27. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates in the passageway, means for supporting a supply of grid plates at a point spaced from the receiving end of the passageway, a rotatable carrier disposed between the supporting means and the passageway and operative upon being rotated to successively lift the plates from the said supply, convey them to, and deliver them into the receiving end of the passageway, said carrier comprislng a pair of transversely spaced wheels having circumferentially spaced, peripheral notches adapted to tiltably receive and support portions of the plates, said wheels being operative to exert edgewise pressure on the plates as theylenter the passageway so as to urge the plates thereinto. and yieldable means for rotating the carrier whereby the movement of the wheels may be retarded when the said edgewise pressure on a plate meets with resfistance of a preceding plate moving at a slower nate of speed in the passageway.

28. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates in the passageway, means for supporting a supply of grid plates at a point spaced from the receiving end of the passageway, a rotatable carrier disposed between the supporting means and the passageway and operative upon being rotated to successively lift the plates from the said supply, convey them to,` and deliver them into the receiving end of the passageway, said passageway being dened in part by a primary pair of power driven feed rolls adapted to grip the plates discharged by the carrier and advance them further into the passageway.

29. In a grid plate pasting machine having a passagewayk for the movement of the plates therethrough, means vfor applying paste to the plates in the passageway, means for supporting a supply of grid plates at a point spaced from the receiving end of the passageway, a ,rotatable carrier disposed between the supporting means and the passageway and operative upon being rotated to successively liit the plates from the said supply, convey them to, and deliver them into the receiving end of the passageway, said carrier comprising a pair of transversely spaced wheels having circumferentially spaced, peripheral notches adapted to tiltably receive and support portions of the plates, and yieldable means cooperating with the wheels, at the delivery side of the carrier, for retaining the plate engagement in said notches until the carrier has rotatably advanced to a predetermined position.

30. In a grid plate pasting machine having a passageway for the movement of the plates therethrough, means for applying paste to the plates in the passageway, means for supporting a supply of grid plates at a point spaced from the receiving end of the passageway, a rotatable carrier disposed between the supporting means and the passageway and operative upon being rotated to successively lift the plates from the said supply, convey them to, and deliver them into the receiving end of the passageway, said carrier comprising a pair of transversely spaced wheels having circumferentially spaced, peripheral notches4 adapted to tiltably receive and support portions of the plates, and yiel'dable means cooperating with the wheels, at the delivery side of the carrier, for retaining the plate engagement in said notches until the carrier has rotatably advanced to a predetermined position, said yieldable means comprising a pair of lever arms having portions peripherally engageable with the `wheels so as to effectively close the plate engaged notches thereof as they pass such lever arm portions.

31. In a grid plateA pasting machine having a vertically disposed passageway for the end to end movement therethrough of grid plates having laterally extending lugs, one lug at each side edge of the plate, saidpassageway including a pair of primary power driven rollers adapted to grip the-incoming plates and advance them into the passageway, a carrier for supplying plates successively to the rollers of the passageway, said carrier comprising lateral members having spaced notches adapted toy receive said plate lugs to support the plates thereby, and friction driven means for operating the carrier members at a grid plate advancing speed in excess lof that of said passageway rollers but permitting the carrier member movement to be retardedby resistance from a plate in engagement with the slower moving rollers,- thereby causing the plates vto advance through the rollers, and a pair of spaced guide plates for receiving the plates acted upon by the rollers, one of' said guide plates having a tapered 'edge terminating substantially at the plane through the axes of the 4two rollers.

33. In a machine for pasting grid plates having two laterally arranged grids to a plate, the combination comprising means forming a passageway for a row of plates, means for forming a continuous ribbon of paste for application to the grids in the passageway, a carrier for the ribbon, and a shoe associated with the carrier for longitudinally separating the paste ribbon into two strips for application to the grids at respectively 10 opposite sides of the plates.

34. In a machine for pasting grid plates having two laterally arranged grids to a plate, the combination comprising means forming a passageway for a row of plates, means for forming a continuous ribbon of paste for application to the grids in the passageway, adjustable means for determining the thickness of the paste ribbon, and means independent of said adjustable means for separating the paste ribbon into two strips one for the grids at each side of the row.

ARTHUR D. LUND.