US983892A - Lumber-stacker. - Google Patents

Description

W. GRAHAM.

LUMBER STAGKER. APPLICATION FILED AUG. 27, 1909.v

Patented Feb. 14, 1911.

5 SHEETSSHBET l.

W. GRAHAM.

LUMBER STAGKER.

APPLIOATION FILED AUG. 27, 1909.

983,892. Patented Feb. 14, 1911.

5 SHEETSSHEET 2.

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q mar. $14..

I A k H] d] Jun,

W. GRAHAM.

LUMBER STACKER. APPLICATION FILED AUG. 27, 1909.

Patented Feb. 14, 1911.

5 SHEETS-SHEET 3.

W. GRAHAM.

LUMBER STAGKER.

APPLICATION FILED AUG. 27, 1909.

983,892. Patented Feb. 14, 1911.

5 SHEETSSHEET 4.

W. GRAHAM.

LUMBER STAGKER.

APPLICATION PIL'ED AUG. 27, 1909.

Patented .Feb. 14, 1911.

5 SHEETS-SHEET 5.

Suva nl'or,

Witnesses (UNITED STATES PATENT OFFICE.

WILLIE GRAHAM, OF NEW ORLEANS, LOUISIANA, ASSIGNOB TO ORLEANS DRY KILN &

STACKER 00., A CORPORATION OF LOUISIANA.

LUMBER-STACKER.

Specification of Letters Patent. Patented Feb. 14, 1911.

Application filed August 27, 1909. Serial No. 514,932.

To all whom it may concern:

Be it known that I, WILLIE GRAHAM, a citizen of the United States, and resident of New Orleans, in the parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in"Lumber- Stacker-s, of which the following is aspecification. V

This invention relates to devices for stacking lumber on cars or kiln trucks, and embodies improvements u on the mechanism disclosed in my application No. 493,683, filed May 3, 1909. v e

The device is intended to pile lumber in horizontal layers on the cars or trucks and includes an elevated platform to which the lumber is supplied, and a vertically movable platform carrying the cars to be loaded.

It includes novel means for raising, lowering and adjusting the movable platform so as to maintain the top of the pile of lumber on the car on a level with the stationary platform which receives the supply of lumber which is to be loaded on the car.

It also includes novel means for separating and accumulating the lumber and for forcing it onto the stack, as well as novel means for depositing spacing sticks in place between the layers of lumber.

The various features will be understood from the following description taken in connection with the accompanying drawings.

In the drawings,-Figure lis a side elevation showing the main features of my invention applied to a lumber stacker; Fig.2 is a plan view of the device shown in Fig. 1; Fig. -3 is a cross section on line 3-3 of Fig. 1; Fig. 4 is an enlarged sectional View of the mechanism for forcing the lumber onto the stack, as well as the means for depositing the separating sticks;-Fig. 5 is an enlarged detail sectional view of some of the parts of the lumber forcing mechanism; Fig. 6 is a side elevation wit-h a part of the lumber conveyer including the accumulating mechanism and means for separating different thicknesses of lumber; Fig. 7 is a detail view of the guides for the separating sticks at the lower end of the hoppers; Fig. 8 is a similar view taken at right angles to Fig. 7; Fig. 9 is a detail sectional view of one of the sheaves including my eccentric adjusting means.

As shown in these drawings the cars or kiln trucks L which are to be loaded travel upon the track V, which is usually some distance above the ground, and which leads to the drying kilns or to any other place desired. In the path of this track there IS an open-sided well or chamber having the corner posts 1, and in this chamber.

in by the ordinary conveying chains, and

also means for forcing those layers of lumber onto the trucks L, when those trucks are elevated. In order to elevate the trucks on the movable platform 2 I make use of hydraulic elevating means which may be easily and automatically controlled in order to lower the platform 2 each time when a layer of lumber is placed upon it, so that the top of the lumber will be in the proper position to receive the next layer. For.this purpose I may use a separate hydraulic cylinder at each corner of the platform 2, its piston connected to the platform, and may control the supply of water to those pistons either automatically or by hand. This furnishes an easy and accurate means for controlling the descent of the platform, since the amount of water discharged can be varied at will and that with the use of four separate cylinders it will sometimes happen that the platform will not be maintained in a perfectly level position, since any inequalities in the weight of the lumber on different parts of the platform may make one corner fall below others.

To avoid this, I prefer to use the hydraulic cylinder 5, see Fig. 3, having the piston rod W carrying at its outer end the toothed rack 6 which meshes with the gear Y on the shaft 7. The shaft 7 is provided with the winding drums U, which drums receive the chains or cables 8, 9 which pass over the sheaves 10, 11, and are secured to the corners of the movable platform 2. The rack 6 rests upon rollers 12 so as to properlysupport it in contact with the gear Y and to avoid strains on the hydraulic cylinder. It will be obwith great nicety. I have found however served that the action of the cylinder 5 moving the rack 6 results in turning the winding drums U so as to wind up an equal amount upon each of 'the four corner supporting cables, so as to raise the platform uniformly and without tip ing.

While the mec anism above described will maintain the platform 2 level, it sometimes happens that the lumber piled on the cars carried by that platform varies slightly in thickness, so that one corner or one side of the pile of lumber may be slightl higher than the other corners or sides. t is desirable that the top of the lumber shalt be level, and therefore to compensate for the above noted variations in the thickness of lumber I have provided adjusting means for each of the sheaves 10, 11, so that one corner or side of the platform may be slightly lowered if it is too high. This mechanism is shown particularly in Fig. 9, where the shaft 13 for the sheave is made with an eccentric but circular portion 14, fitting in a .central bearing in the sheave. A handle or arm R is secured to the end of the shaft 13,

and it will be apparent that by turning the arm R the sheave will be slightly lowered. At the beginning of the operation the eccentric bearing 14 is laced in its uppermost position, so that if it is desired to do 'anyfiidjusting when the load is -on the movable )latform, it can be accom lished by lowering one or more corners o the platform.

The lumber which is'to be stacked is carried by endless conveying chains 15 of the usual type up over the fixed platform 4, it being understood that the boards rest across these chains, and are carried forward by. the friction. These chains at their forward ends pass around sprockets j immediatelyi adjacent the open-sided well which contains the cars to be loaded, and thus the lumber is brought up to position on the platform, where it can be easily pushed onto .the car. Along the conveying chains I provide means for separating the boards of different thicknesses, and means for accumulating the lumber in layers of the proper width to cover the car, and these layers are allowed to come successively to the end of the conveying chain adjacent the car. The means-for pushing these layers onto the car are shown most clearly in Figs. 1, 4 and 5. The means includes the sash made up of the longitudinal bars 0 which extend across a layer of lumber and rest on it so as to serve as presser bars, preventing the buckling of the lumber when the layer is pushed forward. These bars C are connected at their outer ends to a rectangular frame 16 which has suitable braces 17 to strengthen it, and it will be understood that any suitable number of these bars 0 may be used. Each bar 0 is preferably made of angle irons spaced apart so as to leavea slot between them in which slot I place the weighted dogs 18, which have sharp points adapted to engage the surface of the lumber to move it forward. The outer or end bars C have extensions F which pass entirely across the top of the open-sided well containing the moutble platform, and are provided on their upper surfaces with teeth adapted to engage the pinions G secured to a cross shaft. The purpose of .this rack 011 the extensions F is to maintain the sash carrying the bars 0 in proper position and prevent twisting when that sash is bein moved over the pile of lumber. The sas is moved-by the operation of a steam cylinder B whlch has a long piston rod 19 making connection with the sash at the point a.

The steam for operating the piston is admitted through t pipe 20, and by means of valve 21 is directed to either end of the cylinder at the will of the operator, so as to move the sash in either direction, it being understood that when steam is admitted to one end of the cylinder it is exhausted connection of these dogs they will have no effect on the lumber when moving toward the left. In the lumber stack on the cars it is desirable to have ventilating passages E instead of havin the lumber in continuouslayers, and my ogs H are so constructed that they will separate the lumber, leaving passages E at the same time that they push it into position. The forward dog 18 engages. the lumber as soon as the sash containing the bars 0 commences to move, but the next do H is at that time held out of contact wit the hopper by reason of the fact that its upper curved'end 22 is incontact with the'plate J secured to a fixed part of the platform. Therefore the dog H will not engage the lumber until the part 22 passes the end of the late J.

The do at the le t and at the rear end of the sas need not be thrown out of operative position because the lumber will not be immediately in front of it, and will not be engaged until that dog is moved some distance. When the sash 1s in the position shown'in Fig. 4 and while the lumber is being accumulated beneath it, there is an the platform, thus locking it against any- VVhen the sash movesv is at thtit time in contact with the beam 23- of turning mm'ement. to the right however, the arnrl) is' carried with it, and-it may then turn to the position shown in Fig. 5, so that it maybe drawn back over the lumber. I

The spacing sticks A are supported in open-sided hoppers X above the car to be loaded, and any suitable number of these hoppers may be used as shown in Fig. 3.

-The ends of the sticks normally rest upon the bottoms of the hoppers and they are discharged therefrom by slight longitudinal movement sufficient to carry the-ends beyond the bottoms of the hoppers. Tn order to give this longitudinal movement to the sticks I use a frame 7) which is adapted to reciprocate and which has at each hopper a tongue or finger 24 adapted to strike the end of the bottom stick and move it longitudinally, it being understood that there are openings in the rear faces of the hoppers through which these fingers may project. The lugs m, m carried by the sash are adapted to strike the frame 2 and move it to the right in Fig. 4, when thesash has pushed a layer of lumber entirely upon the stack. This movement of the frame p carries the bottom separatingstick to the right until its end falls out of the hopper and rests upon the stack of lumber. Upon the reverse movement of the frame the arm 24, at the right in Fig. 4, engages the end of the lowest separating stick and pushes it to the left until that end also is released from the hopper. It will be seen that the lug 25 on the sash engages the frame 7) upon the return movement. The pivoted weighted arm 26 is connected to the frame 39 and tends to move it to the right about two inches so as to withdraw the finger 24 from beneath the ends of the spacing sticks.

In order to guide the separating sticks and make them lie in proper position after they have been released from the hop ers I make use of vertically movable pivoted guides, such as are shown in Figs. 7 and 8.

These guides consist of wings g pivoted at opposite sides to the bottom of each hopper and constituting a continuation of the sides. They have interior ribs flush with the inner edge of the side walls of the hopper, and are provided with slots 27 loosely engaging the carry the shields out of the way when separating sticks are being deposited, by means of an arm 31. pivoted at 32, and connected to the arm 29 by links. This arm 30 has at its upper end an elbow or extension 33 which is in such position that the frame p Wlll make contact with it and turn it when that Fig. 1. As there shown, I use a curved arm pivoted at 34 and connected by link 35.

to rock shaft 36, which is in turn connected by link 37 to the valve 38, which controls the discharge of water from the hydraulic cylinder W. A weighted arm 39 tends to keep the discharge valve 38 closed. It will beseen that a movement of the arm 0 to the right will open the discharge valve 38 and that the weight'39 will tend to close that'valve, as well as to return the armO to the position shown in Fig. 1,. The lower end of the arm 0 is placed at the properelevation for the top of the stack which is to receive a new layer of lumber. By this construction the discharge valve 38 will remain open until the platform 2 desce ds so far as to permit thearm O to assume the position shown in Fig. 1, where that arm willjust rest upon the top of thestack of lumber. v It will be understood that some other form of trip or valve operating mechanism might be used and that it need not be within the top of the open-sided Well.

The lumber which is brought in by the conveyer chains 15 is scattered along those chains, and before it is pushed in a layer upon the stack it is necessary to accumulate a layer sufliciently wide to properly cover,

the stack, and in Fig. 6 I have shown the mechanism by which this is done. The accumulator consists of a frame T pivoted at 40 and having at its ends the sharp pointed upright abutments t, t. In the position shown in Fig. 6 the lumber is permitted to pass the point t but strikes against the abutment 2. and is accumulated until the layer G is sufficiently wide to cover the stack, and at this time the frame T is turning on the pivot so that the point t is raised in advance of the lumber so as to act as a stop and the layer G is released from the point If so that it may pass under the bars 0 ready to be pushed onto the stack. I prefer to oscillate the accumulator T automatically from the sash containing the bars C as it reciprocates. It Wlll be seen by reference to Figs. 1 and 6 that the frame T is connected at one end by link 41 to the rock shaft P which rock shaft is connected at its upper end to a longitudi- I the adjustable lugs S and 43 in the path of travel of apin 44 carried by the sash which ushes the layer of lumber into place. l Vhen the sash ap roaches the end of its inward movement t e in 44 strikes the lug S, pulling the arm 42 orward, and thus raising that end of the frame T wh' h)car r1es the points if, thus bringing the parts Into position to accumulate a layer of lumber for the next operation. When the sash reaches the opposite end of its movement the pin 44 strikes the lug 43 thus depressing as points it and elevating the oint t, releasing the accumulated layer of umber. The action is thus automatic, and a layer of lumber is always in position to be pushed into place. I find that the lumber brought in by the chains 15 is sometimes carried with such force that when it strikes the abutment t it will buckle and may pass over that abutment. In order to retard the lumber before it strikes that abutment I make use of the pivoted bars 48 secured at onezend to the frame '1. so as to move with it. Those bars are normally below the top of the conveyer chains 15, but when the point t is elevated the tops of the bars 48 bear against the under surface of the lumber on the chain 15, thus retarding its forward movement without actually stopping it before it reaches the abutment t.

It is of course clear that each layer of lumber should be composed of boards of the same thickness, such as one-inch boards or two-inch boards. When however the operatoris stacking onesinch boards it sometimes happens that some two-inch boards will be brought in by the conveyer, and in that case it is necessary to separate the two thicknesses of boards and to hold the two-inch t boards unt1l a sufficient number have collect'ed to form an entire layer. In Fig. '6 I have shown novel means for separating the boards of different thicknesses and for accumulating them until a layer of proper width is secured. That separating means includes a platform having the conveyer chains 0 mounted above the ordinary conveying chains 15 so as to leave a space beneath it for the passage of the lumber. In advance of the elevated conveying chains 0 I place what is termed jump chains e which are mounted on a frame pivoted at 45 below the top of the conveyer 15 and between the outer chains of that conveyer. The forward end 46 of this frame is vertically movable, and I have shown it as moved by a link f connected to a rocking arm at which has a handle in convenient position to be grasped by the operator. The chain e has on. it the lugs 47 for engaging the lumber, and when the end 46 is elevated the board which happens to be at that point on the conveyer chains 15 will, instead of being the platform may be regulated.

, ceases carried forward b those chains, rise on the jump chain can will be de osited on the arms here then turned down into the position shown in dotted lines in Fig. 6 by means of. the handle a and the layer of lumber on the chain c is thus allowed topass down upon the conveyer chains 15 between the ends of the accumulator frame T. It may then be released and pushed onto the stack in the same way as preceding layers.

I wish it to be understood that my invention is not confined to the specific construction of the various parts, and that modifications may be made without departing from my invention in its broader aspects. For instance, it is not necessary to use the steam cylinder for reciprocating the lumber feeding sash, since any other suitable mechanism may be employed for giv- 9o ing to the sash its reciprocating movement. I prefer however to use some means for driving this sash Which will yield when it, strikes an obstruction, as in the case of the steam cylinder, or of a friction drive.

Having thus described the invention, what is claimed is:

trolled by the thickness of the layer deposited for lowering the platform a distance equal to the thickness of that layer.

2. In a lumber stacking device, the combination with a support for lumber, of a vertically movable platform means for stacking lumber on said platform in hori-llo zontal layers, a hydraulic piston, ositlve mechanical connection from said piston to each of the corners of said platform for raising it, andv mean s controlled by the stacking mechanism for exhausting "the water fromsaid iston and allowing the platform to deseem? a predetermined amount.

3. In a lumber stacking device, the combination with a support for lumber, of a vertically movable platform, means for stacking lumber on said platform in horizontal layers, cables secured to said platform for raising it, windin mechanism for said cables, a hydraulic cy inder positively connected with said winding mechanism for turning it whereby all of the cables will be lengthened or shortened simultaneously,

and means for controlling the discharge from the cylinder whereby the descent of 30 eaaeee 4. In a lumber stacking devicc, the combination with a supportfor lumber, of a vertically movable platform, means for stacking lumber on said platform in horizontal layers, cables secured to said platform near the corners, pulleys over which said cables pass, drums on which sai cables are wound, a -h draulic piston for urning said drums, an means for controlling the action of saidv iston.

5. In a lum er stacking device, the courbination with a support/for lumber, of at vertically movable platform, means for stacking lumber on said platform in horizontal layers, cables secured tosaid platform near the corners, pulleys over which said cables pass, drums on which said cables are-wound, a. hydraulic piston for turning said drums, the piston rod having an extension in the form of a toothed rack, and a pinion connected with said drums and engaged by said rack.

6. In a lumber' stacking device, the combination with a veitically movable platform, of cables for raising and lowering said platform, a winding drum for said cables, at toothed gear for turning said drum, a rack engaging said gear, and a hydraulic piston having a piston rod secured to said rack for moving it.

7. In a lumber stacking device, the combination with a vertically movable plat-forn'l, of mechanism for raising and lowering it, a pinion for driving 'said mechanism, a toothed rack engaging said pinion, a hydraulic cylinder having a piston rod connected to said rack for operating it, and an' antifriction support for said rack holding it in contact with said gear.

8. In a lumber stacking device, the combination with a vertically movable platform, of mechanism for raising and lowering it uniformly at all points, and supplemental means for adjusting the relative elevation of the corners ofthe platform. l

9. In a lumber stacking device, the com bination with a vertically movable platform, of mechanism for raising and lowering it uniformly at all points, and independent means for changing the relative elevation of the corners at any time during the ascent or descent of the latform.

10. In a lumber stacking evice, the combination with a vertically movable platform,-of cables secured to said platformand passing over supporting sheaves, means for winding said cables to raise said platform, and adjustable eccentric bearings for said sheaves.

11. In a lumber stacking device, the combination with a vertically movable platform upon which the lumber is to be stacked, mechanism for raising and lowering said platform, a hydraulic cylinder for operating said mechanism, a movable arm adapted to be moved out of normal position by the lumber as it is fed onto said stack, and connections between said arm and the exhaust of said cylinder for exhaustingwatcr from said cylinderwhen the arm is out of normal position.

12. In a lumber stackin device, the combination with a vertical y movable platform upon which the lumber is to be stacked, mechanism for raising and lowering said platform, a hydraulic cylinder for operating sald mechanism, a movable arm adapted to be moved out of normal position by the lumber as it is fed onto said stack, connections'between said arm and the exhaust of said cylinder for exhausting water from said cylinder when the arm is out of normal position, and means tending to return said arm to normal position. I

13. In a lumber stacking device, the combination with a lumber stacking platform,

of a lumber accumulating platform, means for accun'iulating lumber in fiat horizontal layers, a sash having bars resting across the layer on the accumulating platform, dogs on said bars engaging the upper surface of said layer, and means for moving said sash forward over the lumber stacking platforn'i,

thus supplying the lumber in layers to said stack. v

14. In a lumber stacking device, the combination with a lumber stacking platform, of a lumber accumulating platform, means for accun'iulating lumber in flat horizontal layers, a sash having bars resting across the layer on the accumulating platform, dogs on said bars engaging the uppcr surface of said layer, means for moving said sash forward over the lumber stacking platform, thus supplying the lumber in layers to said stack, and means for preventing twisting of said sash as .it is moved forward.

15. In a lumber stacking device, the combination with a lumber stacking platform, of a lumber accumulating platform, means for accumulating lumber in flat horizontal layers, a sash having bars resting across the layer on the accumulating platform. dogs on said bars engaging the upper surface of said layer, extensions in the form of toothed racks on the outer bars of said sash extending entirely across the lumber stacking platform ears engaging said racks to prevent twisting of the sash, and means for moving said sash forward over the lumber stacking platform, thus supplying the lumber in layers to said stack.

16. In a lumber stacking device. the combination with a lumber stacking platform. of a lumber accumulating platform. means for accumulating lumber in flat horizontal layers, a sash having bars resting across the layer on the accumulating platform. dogs on said bars engaging the upper surface of said layer in transverse lines, means for moving said sash forward over the lumber layers, a movable sash resting on and engaging said layer, a movable stop on the forward edge of said sash held 'in the path of said layer when the sash is ,on the accumulating platform, and means for moving said sash forward over the lumber stacking platform.

18. In a lumber stacking device, the combination with a lumber stacking platform, of a lumber accumulating platform, means for accumulating lumber in flat horizontallayers, a movable sash resting on and engaging said layer, a steam cylinder extend- .ing across the lumber stacking platform, a piston rod extendin entirely through said cylinder and secure to said sash at its rear edge, and means for supplying and exhausting steam in said cylinder for reciprocating said piston rod. I

19. In a lumber stacking device, the combination with a lumber stacking platform, of means for feeding lumber to said latform in flat horizontal layers, open aced hoppers for holding s acing sticks over said lumber stacking plat orm, a frame having fingers adapted to extend through the rear walls of said hoppers at the bottom and to engage the ends of the bottom sticks, and means for reciprocatin said frame to discharge said bottom stic s.

20. In a lumber stacking device, the combination with a lumber stacking platform, of means for feeding lumber to said platform in .flat horizontal layers, open-faced hoppers for holdin s acing sticks over said lumber stacking p at orm, a frame having fingers adapted to extend through the rear walls of said hoppers at'the bottom and to engage the ends of the bottom sticks, and means on said lumber feedingmechanism for striking and reciprocating said frame to discharge said bottom sticks.

21. In a lumber stacking device, the com- I bination with a lumber stacking platform,

of means for feeding lumber to said latform in flat horizontal layers, open aced hoppers for holding acing sticks over said lumber stacking plat orm, a frame having fingers adapted to extend through the rear walls of said hoppers at the bottom and to engage the ends of the bottom sticks, means for reciprocating said frame to discharg said bottom sticks, and yieldingmeans ten ing to hold said frame in position with the fingers withdrawn.

ceases hop 'ers for holdin spacing sticks over said 22. In a lumber stacking device, the combination with a lumber stacking platform, of means for feeding lumber to said latform in fiat horizontal layers, ope'naced lum er stackin p atform, a reciprocating frame for disc argin the s acing sticks onto the stack, movab e shiel s adapted to end over the ends of the spacingsticks on the stack so as to guide the layer over those ends and connections between said shields and frame for withdrawing the shields as spacin sticks are deposited.

bination with a lumber stacking platform,

of conveying chains for bringin lumber to the edge of said platform, mec anism for forcing said lumber in layers on said platform, mechanism in advance of said forcing mechanism for accumulatinga layer of lumber of proper width to cover the stack, and

connections from said forcing mechanism for operating said accumulating mechanism.

n a lumber staekingrdevice, the combination with a lumber stacking platform,

of conveying chains for bringing lumber to the edge of said platform, mechanism fOl"' forcing said lumber in layers on said plat form, a pivoted frame having stops for accumulating a layer of lumber in advance of said forcing mechanism, means for turning said frame on its pitlot to release the accumulated layer, and connections for automatically operating said turning means from said forcing mechanism.

25. In a lumber stacking apparatus, the combination with conveying chains, of accumulating mechanism havin stops separated longitudinally of the chain and adapt ed to be projected alternately into the path of the lumber on said chain, and friction bars adapted to bebrought into contact with the lower surface of the lumber in advance of said stops, when they are elevated to re-' tard the motion of the lumber before it strikes the stops.

26. In a lumber stacking apparatus, the I combination with conveying chains, of stops ada ted to be projected in the path of the lum er on said chaihsto accumulate it, and means in advance of said stops for retarding the motion of the lumber before it strikes the sto s.

27. Ill a lumber stacking apparatus, the combination with conve ing chains, of stops adapted to be projecte in the ath of the lumber on said chains to accumu ate it, and friction bars in advance of and connected tobe moved with said stops and to be brought in contact with the lumber to retard it when the stops are elevated.

28. In a device of the class combination with conveying chains, of a supplemental conveyer above said conveying chains, and movable means for throwing described, the

any selected piece of lumber being carried by said chains up on the supplemental conveyer as it is about to pass.

29. In a device of the class described, the combination with conveying chains, of a, supplemental conveyer above said conveyer chains, movable means for throwing any selected piece of lumber being carried by said chains up on the supplemental conveyer as it is about to pass, and a movable stop on said supplemental conveyer for accumulating a layer of lumber thereon.

30. In a device of the class described, the combination with conveying chains, of a supplemental conveyer above said conveying chains, movable means for throwing any selected piece of lumber being carried by said chains up on the supplemental conveyer as it is about to pass, a movable stop on said supplemental conveyer for accumulating a layer of lumber thereon, and means for discharging the layer accumulated on said supplemental conveyer onto the main conveying chains.

iii. In a device of the class described, the combination with the conveying chains, of a sn )plemental conveyer above said chains, jump chains in advance of saidsupplemental. conveyer pivoted at the fOlWtllTl end below said conveyor chains and adapted to be turned into the path of the lumber to carry it to the supplemental conveyor, and a stop for accumulating lumber on said supplemental conveyer.

32. In a device of the class described, the combination with the conveying chains, of a supplemental conveyer above said chains, jump chains in advance of'said supplemel'ital conveyer pivoted at the forward end below said conveyer chains, and adapted to be turned into the path of the lumber to carry it to the supplemental conveyer, and pivoted arms at the rear endof said supplemental conveyer adapted to stand in the way of said lumber and serve as astop and to be turned down at an angle to discharge the lumber onto the main conveyer chains.

83. In a lumber stacking apparatus, the combination with a lumber stacking platform, of means for forcing lumber onto said platform in flat horizontal layers, open-- sided hoppers facing each 0 her above said platform for containing spacing sticks, means for discharging the sticks. from the bottoms of said hoppers, and pivoted wings constituting extensions of said hoppers at the bottoms for guiding the sticks after they are discharged.

34. In a lumber stacking apparatus, the combination with a lumber stacking platform, of means for forcing lumber onto said platform in fiat horizontal layers, opensided hoppers facing each other above said platform for containing spacing sticks, means for-discharging the sticks from the bottoms of said hoppers, and pivoted Wings having rounded bottoms adapt-ed to rest on the lumber and constituting extensions of said hoppers at the bottoms for guiding thesticks after they are discharged.-

35. In a lumber stacking apparatus, the

combination with a lumber stacking platform, of means for forcing lumber onto said platform in flat horizontal layers, opensided hoppers facing each other above said platform for containing spacing sticks, means for discharg ng the sticks from the bottoms of said hoppers, and pivoted wings having slot and pin connection whereby they may move vertically, and having rounded bottoms adapted to rest on the lumber and constituting extensions of said hoppers at the bottoms for guiding the sticks after they are discharged.

In testimony whereof I aflix my signature in presence of two witnesses.-

WILLIE GRAHAM. Witnesses:

B. C. RUST, ARTHUR L. BRYANT.

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