US1773302A - Extension haystacker - Google Patents

Description

R E K Aug. 19, 1930.

4 Sheets-Sheet Filed Jan. 16 1928 Au@ i9, A1930. J. H. COPE EXTENSION HAYSTACKER Filed Jan. 16, 1928 4 Sheets-Sheet 2 n| Aug. 19, J. H. COPE EXTENSION HAYSTACKER Filed Jan. 1e, 1.928v

4 Sheets-Sheet llf fi Z5 Z 23 Aug., 19, 1930.

J. H4. COPE EXTENSION HAYSTACKER Filed Jan. 16, 1928 4 Sheets-Sheet 4 r,Patented Aug. 19, 1930 iro sin.Tiasl PATENT fiOlflfFlC'31-r 1 Y JOSEPH H. COPE, orznnnvnnyootoimno y EXTENSION HAYSTACKER k A' Application filed YJanuary 16, Serial No. 247,179.

'l Y Thisiiivention relates to improvements in hayv stacleisv of the'type in which the hay is kdeposited onto a stacker head and then ele- ,'vated and deposited onto the stack by means l s of power. 1t is the object of this invention tofiniprovefthe construction `of stackers of this typeso as to obtain better operation and; to simplify andstrengthen the construction.V

Itis Vthe Jfurther object of this invention Ii to. produce ya stacker of this type that shall have an improved lpiill-back which will also act as a stop for ylimiting theoverthro'w of' f the stacker head;

is the fiirtlieifobject of this invention .to l improve the construction ofthe truck so that thefraine will 'be automatically raised whenj everthe stackerfhead is lowered and which will automatically latch the truck in operative position sodthat the stacker headjcan f Ww' ZObe raised for the purpose ofpassing through gates and for other reasons'.` l

Itis a still further obj ect of this invention fto provide improved` guides forlthecables that' will positively prevent the cables from falling oil from the pulleys when the stacker is in operation. y The above and other ob] s coineapparent as thedescription proceeds are obtained by means of a coiistructionaiid anl W arrangement of parts that will now be described in detail, reference for thisl purpose beingl had to the accompanying drawings, in Which the construction hasrbeeii illustrated, and in which:

5 '1 35 Fig. 1 is atop planr view of my improved stacker showing the saine in its4 normalposifVv tion;

, Fig. 2 isfafside' .elevation of' one of the wheels of the truck.,

of arrowy 2, Fig. 1; Y Y v i Figl is a section taken on line 3 8, Fig. 2;

looking in thedirection 4 K Y Fig.tisa section taken on line 4 4, Fig-2 f Fig. 5 is a section taken on line 5-5, Fig: 1; 5 ['Fig. 6 'is a side s, stacker Fig. 7 is a View looking in the direction of arrow 7 in Fig. 8,' and shows a detail' of the construction;

"Fig 8 vis a sctiontaken on lineV 8-8, Fig.

elevationY of my improved Fig. 15 is`a section taken online 15-15,

Fig.6; o Fig. 16 is a section taken on line 16e-.16, Figml; l f l Fig. 17 is a vsection takenY on line 17;17, Fig. 6;

.Fig. 18 is afragnientary side elevation of a `portion ofthe'Y stacker frame showing the parts to asoniewhat larger scale;

"Fig, 19is a section taken on line 19-19,

Fig. v18; n n' s Fig. 20jis a section taken on line 20-20, Fig. 18;. `Fig.21 is a sectiontaken online 21-21, Fig.-A 18'; f Y i Fig. 22is ay sideelevation showing a slightly inodiiied form of latching mechanism 5 and Fig. 23 isv a sectil n taken on line 28e-23, Fig.22.` K* i jMy improved stacker is supported on a frame comprising side pieces l, 1, which are connected by transverse piecesQ. Extending n' 'upwardlyfro'ni one end' of this `trarne. are coriier posts `These corner posts are held in` upright position bym'eans of a transverse bar Qthat extendsbetween the'tops of theseposts and is connected to thecenter post 40,.'and

'by inclined brace members 5, whose lowerv ends are niortised into-the side members :1 in the manner shown inFig. 18. FromFig. V'18, it Willbe observed that the upper edges of side members 1 are'pro-videdwith transverse notches 6 and the lower ends of the inclined brace members "5 are provided :with downwardly extendingl projections? lthat fit ,into these notches. 1' Bolts 8 `pass through the ,low-

er ends of the brace men'ibers a and through the side members 1 so as to clamp the parts together. Referring now to Fig. 5, it will be observed that the upper ends of the braces 5 terminate adjacent the transverse bar 9 and that they are located between the two spaced corner posts 3. A metal strap l() is secured to the underside of each brace 5, and hasits end 11 located under the under surface of the transverse bar 9 to which itis secured by means of a bolt 12. A corresponding metal strap 13 is secured to the upper` side of each brace and this, together with the strap 10, is held in place by means ot bolts 11i. The upper ends of straps 13 have transverse portions 15 that Vextends over onto the rearsurtaces of the corner post 3 and are secured to the latter by means of bolts 16. By properly lo-V eating strap 13. it is obvious that itcan be put under considerable tension by tighten-ing the bolts 16 and by this means a very solid joint' is obtained. Attention is called at this point tothe fact that any torce tending tomove the corner pest outwardly along the length of the trame is resisted by the braces 5 and that j this force istransmitted to the side Vbars 1 by means of the downward projection fr" andthe sides of the transverse notches v6. Thelfower ends of the braces 5 are also connected to the i side members 1 by means of straps 17'.' Atwith notches 18 on their under surfaces,

Fig. 18.

Secured to each side of thera-nieY are .two

parallel bars 19 which perform the doubleV function ot' stops and pullbaclrs in a manner`r which will be hereinafter more fully de scribed. One of these bars is located to each side of the brace members 5 in the manner shown in Figs. 1 and 19. These bars are held together by means or bolts 20 and are held in spaced relation by means of errules 2l. The lower ends of each pair of combined stop and pullback bars is connected to the lower ends of the corresponding corner posts by means or straps 22, one l,end of which is pivoted to the lower bolt 2O and the other or which is pivoted to the bolt 23 that connects the corner posts tothe ysi-de bar 1. A

, spring 211 has its lower endconnected to. a

its up bracket 25 that is securedto the brace 5 and 'er end connected to a bracket 26, which attached to the bars 19, Fig. 18. The transverse bolt 2O which is located above the place where the iinlrs 22 are pivoted, is so positioned that when the pullback bars, are in their `rearmost position. the 'ferrule 21 will engage the notch 18 and serve asa stop for limiting the rearward'movement off these` bars.

Attention is ycalled at this point to the brace 2 thatextends from the lower side or each brace 5 to the upper edge. or the correr.comprisingtwo side members 30 that are connected by means or parallel transverse members31. The upper ends of these side bars 3,0 are connected by means of a bolt 32 on which is pivoted the grooved pulley 33. The upper ends 0i the flat steel bars 34 are also securedv to the boltl 32. A .cable guide which is formed of a piece of sheet metal having parallel sides 36 that embrace the pulley is also pivotally secured to the bolt 32. .l`his cable guide is provided with holes 37 through which the cable 38 passes, and also v.with a hole 39 to which the end of the cable is anchored in the manner shown in Figj8.

Referring new more particularly to Figs. 10 and 1 1, it will be observed that I have secured to the center post l() two spaced grooved pulleys 411 and 4t2. These lpulleys are located between the side bars 13 and the latter are secured to the upper end of post40 by means @iside straps lla, whose upper ends are perorated for the reception of the bolt which serves as a pivot for the pulley 42. Another strap 4G is connected to the upper end of post 410 by means of a bolt 17 vand has its upper end perforated for the reception of the belt 48, which serves as a pivot for puller -l-l. A cable guide 35 which is constructed lile the onedescribed in connection with Fig. 8 is pivoted to the bolt 48 and cooperates with the pulley- 41 to direct the cable38 into the gro-ove et this pulley. rA slightly diiierent form et .cable guide has been indicated by numeral 19 and cooperates with the pulley in the manner shown in Fig. 10. Inclined metal bars extend from the upper end of poste() to the side members 1 and Serve to vthe side members 1 and have their lower ends secured to the latter by means ,et bolts 52.

v .t will be apparent from the above that post 40 is very lsecurely braced against moveyment with respect tothe frame and that it therv tore serves as a rigid anchor fr pulleys l1 .nd 42 with whichf the cable 38 is operatively associated. The stacker head which comprises a plurality of teeth 53 that are connected to each other by means ofv transverse bars 54 and a yplurf-Llity of vertically extending teeth 55, which are likewise conto. each other by means 0fA a transverse bar 56, securedto the lendsbf two parallel arms'57. Diagonal braces 58 eXtend from 'the vertical teeth555 to the horizontal teeth 53 an-d hold these two sets of yteeth in a prev. .lo

determinedrelation."v rihe arms57 are connected by means oftransverse bar 54 and arms 60A and are slidable along the latter.

' Fig. 15. 2o.

Secured tol the upper` surface of the'transverse bar,62` are Z-shaped gui-des lpwhose 66 are rbent so as to project over the arms 57, Rods 67 have their lower ends 68 extending through openings in the guide members 64 and inthe arms 60 and are held iny place by means of nuts 69. The upper ends of'these rodsaresecured tojthelower A'ends of the straps 34ein`the*manner illusltrated in Fig.l 7. f The connection betweenI u stra'pBi and bar "67' mayfbeeffected in any" suitable way b ut 4has been'shown in the followingmanner. The lower endof each'bar *'34 has been bent voutwardly in the mannerindi'cated` by numeral 68.

bent ends are perforated and the bars 67 are passed throu'ghthe openingsk in these out-VY wardly bent ends. rThe upper ends of rods' *67 are bent inwardly as indicated by refermeans of bars 34 and rods 67, and therefore `ence numeral 69 so as toform hooks which extend through openings Ain'the'bars 345. In' l vfthisiinannen a goo-dand substantial connec vtion isimade without the use of bolts or rivets.

It is now apparent thatV thev A frame comprisingthe side members 30, has its' upper end connected with` that partof the lifting@ frame comprising theside members'60 byf whenthefA fram-e isrotated in a clockwise direction, from the position shown inFig. 6,51 itwwill also rotate the lifting frame and the` lattached extension 'frame together with the l' stack-er head and finally bring the parts into the position shown in Fig. 12. As the stacker head usually carries arload of hay, itis apparent that considerable power is required toAVV raise the same. And this is provided by a Y tractor, or b va team of horses'. TheV cable 38 around the pulley 70, which is pivotally'connected to 'the' frame by means of the bracket- 71 and the plater 72 in the manner shown in".y

Fig. 13. When the cable ispulled in the di# 'rection of thear'row-in Fig. 13, the `A frame i will be rotatedabout itspivot and' the vstackery head raised'v and moved to the position shown in 'Figi` 12. It is `apparentth`at some means mustbeprovided to stop the movement of the stacker head and to assist inreturning it after kthe tension inthe cable has been removed'hflt is further necessary to' providemeans'forjeitending the stacker head lifting framesoV that the hay can be `raised to the top ofthe "stacky as thela-tter is increasing:

in height.s f In order to accomplish the resultV insty mentioned, I have provided pusher Yarms or ylinksv l73l whose upper` ends are pivoted at 74 between the upper ends of the corner posts l n 3. The lower end of each pusher bar is pro-` rlower ends are ysecured tothe transverse bars 'by means of bolts 65 and whose upper endsVVV vided 'witha guide 'and bracket rthat has an end portion 76 whiclieXtend-s down along the outside ofar1nsf57`and60 andA has its eitreme'low'er endfbent underneath bar 60 in theman'ner shown most clearly in Figs. 18v

and 20,*and indicated by referencenumeral 77. corresponding guide member 78 1s se- "cured to the other side of each pusher bar 7 3 4,but extendsY merely short 'distance down nto thearm 57 in the manner showninFigi 20Kl These'guide members serve to holdthe f ends` of thepush'er-bars in Aproper vrelation to ,the stackerv head liftingframe.'{Thepart v is provided' with a notch v7 9 vkwhich vis so'located that itfwill' engage a {pin or bolt that is placed in kholes 80V inyeachof the arms 57 j When pins are placed in any iof the holes 80 yit isapparent'that these pins will engage'the notch 9 as the stacker` head`l is lmoved. upwardlya'ndl asso'on'a's'this occurs thearins 57 will be forced to slide lalong arm 60'to an 'eXtentdeterminedby the position of the pins v81, inthe manner quite clearly apparentfrom iF ig. 12. f From Fig. `18. it is apparent that lwhen th-e'stacker head'occupiesjits' lower- Yioo most,V position, that the' guide 6 comesbetween thestrap63 and the first hole80 'and tension, and ltherefore this extension VVcan be vvaried by `vvarying the position of the pins in the mannerI above indicated'. bracket 82 'pullbackbars 19, the'l projections 83 will eng'age underneath the bolts 2O as above mentioned. f Uponr further movementi of the stackeryh'ead the rp'ull'back vbars 19,v will be raised, owing to 'the fact that'jthe bolt2`0 to Whichireference -hasfheen madewilll new be therefore if'the' pin' 81l is placed in this hole, the stacker head will have the maximum eX-.

lll)

rote-ting about pvot 74- Ths rotation. and upward movement of bars V19 will continue .A u the parts are in the position shown in 2g. V12 in which position the bars'19 will engage with the upper ends of the corner posts 3 so as to stop the parts from further Y. movement. kDuring this movement, spring 24I has been extended in the manner clearly shown in Fig. 12 Vwhen the parts have reached their maximum movement, this spring will be under considerable tension, and Will therefore exert a force which together with the weight of the bars 19 tends to return the stacker head and the bars 19 to the position shown in Fig. 6. It is apparent from the` description just given, that bars 19 forniv a two-fold kfunction and` serve as stops and also as means for pulling the parts .backwards towards their starting position. T liesev bars have therefore been referred to as combined stops and pull back bars. f

lVheneverthe stacker is to be transported,

it is desirable that one end at least shallbe supported on wheels and Ihave therefore provided a truck which c-onsists of two wheelsy 84, one of; which is located on each side of theV supporting frame. Each wheel is mounted 1n a frame work havingtwoparallel side members 85 and 8,6, to which the wheel is pvot-ally attached means of a pivot pin 87. These frames are pivotally attached 'to the side members 1 at 88. The side 86. projects rear- Wardly so as to provide an extension 89'that is adapted to' pass over the inclined head 90 of the bolt 91, which serves to latch it in the position shown in Fig. 2. A pin 92 ser-Ves as y a stop which limits the downward movement of the frame. Secured to the transverse end portion 93 of the frame that encloses the wheel, is an arm 94 that is provided with an end portion 95 that vextends at right angles to the arm and passes through an opening in thc upwardly extending lua 96'. This arm caribe rotated about the axis of the part 95.

so as to occupy a position like that shown in y Figs. 3; and Y4.r 1Whenarm 94 is in the posiitil Gil;

tion shown in Fig. 3, it extends over the upper edge ofthe side member 1 and will be ei-igaged by the bar60 of the liftingframe when the latter iS moved from the pOsltiOn. Show-nin Eig.. lf2 to that shown in Fg- 2- AS the 60. come in contact with arms 94, the

the arms 94 are thro-wn outwardly into the position shown Fig. 6, and the supporting frame then rests on the groundalong its entirelength. Stops 97 secured to arms 57 are so located that they will be engaged by the guides 7 6 for pulling the stacker head back t0 the positiony shown in Fig.. 6.

In Figs. 22 and 23 I have illustrated a slightly modified construction in which the stationary latching pin 91lias been replaced by a loop 91a that encloses the side bar 1 and is slidable tlierealong from the full line Vto the dotted line position shown in Fig. 22. Loop 91a has an inclined outward projection 90.a over which the extension 89.can slide and which serves to latch the latter in the position shown in Fig. 22. A sto 97 limitsthe movement ofthe loop in one irection while ypin 92 limits it in the other direction.V Then the loop 90CL is in the dotted line position, it L will ce ineffective for lat-ching the truck which will then be held in operativeposition by the weight of the lifting and the stacker head extension frames.

From the above description it will be apparent that I have produced an improvedV stacker. mechanism of simple and substantial Yconstruction that is provided with a combined n stop and pullb'aclr,V which is positive'in its action, and which greatly simplifies the construction and improves the operation. My

improved construction is also very substantially braced and therefore will remain rigid and resist excessive strain better than constructions more poorly made.

Specialv attention is directed to the improved truciz construction which is convenient and simple and which automatically latches in `operative position so that the stacker head can be readily raised during transportation.

I desire to call'particular attention to the arm 94 that is pivoted to the lug 9G. In Fig. .6, this arm has beenshown as' thrown out wardly and this isjthe position that it occupies during the operation of the stacker.' If it is desired to move the stacker then the op'- erator throws arms 94 inwardly so that it rests upon the upper edge of bars 57 before the last load is raised. Then the stacker lifting and extension frames are raised for the purpose of depositing the last load of hay on the stach, the arms'94 will fall into the position shown in Fig. 12 so as to project inwardly into such position that they will extend .e

into the path of the lifting frame and be en gaged by it when the frame returns, thereby raising the front end ofthe supporting frame into the position shown in Figsg` 2 and 22 The employment of means which, like arms 4 4, can be moved` into a position in which they rest upon the extension arms 57 so as te drop into operative position when the Stacker lifting frame is raised, 'simplifies' the operation as it obviates the necessity of raising the frames for the special purposeof kputting arms 94 into place.

I also desire to call particular attention to the means remployed for pivoting theA ends of the lifting frame bars 60 to the bracesl."

This is accomplished by securing a iatmetal bar toeach side of the'rear ends of bars 60 and extending the ends beyond the ends of the bars a sufficient distance to permit them to be secured 'to the braccs by means of bolts Havingv describedthe linvention what I claim as new is: l Y

1. A stacker comprising,lin Combination, a supporting lframe havingy a rigid vertical core ner post, a stacker head lifting frame having f one end pivoted tothe supporting frame, a

stacker head carriedby the stacker head lifting" frame, means forvrctating the stacker` headliftingframe about its'pivot, a combined stop andrpullback 4bar, means for attaching the lowerr end of said bar tothe corner post, said means comprising a link having one end pivoted to the lower end of the bar, and the' oth'erend pivoted to the corner post, the upperend of the pull back bar lyingin the path of movementof thel lifting frame,'a stop Y Y forY limiting "the movement of the pull back.

bar in onefdirectiomf and means comprising `f l movek the bar'towards the stop.

a spring jfor producing a force tending to y 2. stacker comprising, combinati'on,`a supporing 1 frame, a. stacker headfhfting frame' having one end pivoted to the support- 'ing frame, aY stackerhead carried by the stacker lifting frame, means for 'rotatg ingfthe stacker head `=frame about. its pivot,

a combined stop and pullbackbar, means 'for attaching the 'lower end of said bar to the sup;

,porting frame, saidmeans 'comprising a link having one end pivoted to rthe ba'ra'ndpthe"V other pivoted tothe supporting frame, means for .guiding said` stop and pullback, bar, a stop for 'limitingfits' moverent in one directOn, means comprising a springffor produc'- ing 'a' force for vmoving'it againstthis'stop y and af Stop 'for limiting the 1novementl gf 'they Pullback balli inthe ep combined stop and posite directi'ongv Y l y A. n,

An'extension stacker comprising, inc oin:

stacker frame,y one'V end one ofsaidparts beingfpivotaflly atta'chedto the supporting frame, a stacker-headsecuredtooneend of th e other part, meansfforconnecting said parts so i thath'th'ey'm'ay` move longitudinally withfrefv 'spectz to eachother, 'means y"for, rotating" thei :stacker iframe abmit itspivcnfmeansforex- A y tending the stacker frame ,while it isgrotateda ycombined stop `v and pullback bar havingfits G. Astackerhavinga supporting frame, stacker Yhead liftingY frame pivote'd at one lower end connected to the supporting frame y by means of al link, one end ofwhich is piv# oted to the supporting frame and the other end of which ispivoted to the pullback bar, a stop for limiting the (movement of the pullback bartowards the'stacker frame, means comprising a spring for'normally holding the'pullback bar against thestop, a second stop for limiting the movement of the pull# back. bar againstthe forceexerted by the` spring and means carried by the stacker head extending means for engaging the pullback barV and' `for moving the lower end thereof abnut4 the stationary pivot of the connecting lin.

4. An extension stacker comprising, in coinbination, a'supporting frame, a stacker head *lifting frame having one end pivotally con- 7 nectedL with the supportingframe,a stacker bar having `one end pivo'ted to stationary" portion of the supporting kframe at 'a point to the rear 'of and spaced from vthe point whereV the stackerframe is pivoted, a guide secured to the freer end of the pusher bar, lsaidguide extending downwardly along one'side ofthe r" relatively movable parts ofthe. stacker frame and slidable with respect tofboth frames and two spaced stops'carried by the slidable part of the stacker frame', said-guide having a poi tion extending across the` underside ofthe stacker head lifting frame'for holding the Vendof the pusher barin a predetermined slidable relation vwith the stacker `head lifting Yframe and the stacker head extension frame..

' 5. A stack-ercomprising, in`combination, a supporting frame, a; stackerL head lifting Y frame havingone'V end pivotally attached to the supporting frame, means for rotating the .stacker headfiamejfrom a substantially hori 1 zontal to a 4substantially vertical position, a pull back 'devicefori imparting to thek stackerphead frame a force tending to return it to normal position, said pullback comprising a pull back bar whoselower end is connecter tothe framefbya movable link, said bar con'- stitnting aweight, a springaextending from ingthe spring" and for y'raising the weight whenithest'acker headjframe'approaches verbin'ationffa supporting iframe, ajtwopalt: i i' ticaljposition.,1 n

end to-thesupporting frame, said stacker Yheadlifting frame normallyoccupying a sub# stantfially horizontal position, and means for Y y 'rotating thestacker head liftingr frame frein` ile 'the bar'totjhe frame, and means for tensionnormal-toa substantiallyyerticalrp'osit'ion, f

,',means Afor returning saidlifting frame to 'normal position, 'said kmeans comprising a pull back bar having its lower end attached to the supporti iigframe by'means of a link, a spring having one end attached to the supporting frame and the other end attached to the bar and means for raising the bar and stretching` pivoted to the supporting'frame, an extension frame slidably supported on top of the lifting frame, a link having one end pivoted to the stacker frame at a point spaced from and above the lifting frame pivot, the free end of said link beingv slidably connected with 'the lifting frame, and means carried by the free end of the link and partly enclosing an arm of both frames for holding the end vof the link against movement away from the arms while permitting it to slide along both arms when the lifting frame is moved about its pivot.

8. 1n an extension stacker having a supporting Iframe, a stacker head lifting frame pivotallyV attached at its rear end to the supporting frame and means for rotating the lifting frame about its pivot, an elongatedA wheel frame vpivoted `at its front end of each side Vmember tothe front end of the supporting frame, a wheel secured to each wheel frame, means pivot-ally attached to the rear end of each wheelrframe for extending into the path of the lifting frame and 'latching means carried by the supporting frame.

y9. A stacker having a supporting frame, a

lifting frame pivoted at one end to the supe aortinc' frame means for movin-O' the lifting f D 7 C i C frame about its pivot, a link having its rear end pivotally attached to the supporting frame and means carried by the free end of the link for. slidably attaching it to the lift-A ing-frame, Vsaid Vmeans comprising a, guide nber secured tothe free end of the link ,i lia-vino' a portion extending transversely across the iifting frame niemberon the sidey 1 opposite-from the .free end of the link whereby the link will be held against movement away fronithe lifting frame` 10. 1n an extension stacker vhaving a supporting frame, a stacker head lifting frame pivotallv attached at its rear end to the supporting frame, means for rotating the lift- 'ingY frame about its pivot, a separate `wheel frame pivoted vat one end to eachside of the pporting frame, a wheel pivoted to` each .fi-.mie intermediate its ends, and anainipivotally attached to the free endfof each wheel` aine and adapted vto be rotated about an axis l with the wheel frame whereby it may :e turned so torextend across the `planeof ting frame meinberon the sideto which wheel i. ame is attached. Y f s 1l. ,er stacker' mechanism "comprising, in nation, supportin frame, havingside ,nb'ers and end members, ajposteztending s tanti ally perpei'idicularly to the" plane of the frame at each corner at one end, means for applyinga force to each post tendingF to move it out of perpendicular position, and a brace extending from each corner post to theV adjacent side member, the upper end of each brace being securely connected with the corner post, the lower end of each brace having a downwardly extending portion having a transverse shoulder on its front and rear side, the sidemember having a transverse notch adapted to receive the downwardly extending portion and means for securing the lower end of the brace to the side member.

12. A stacker device comprising a frame having a beam adapted to rest upon the ground, a substantially vertical corner post secured to one end of the beam, a brace (5) extending from near the upper end of the corner post to the beam, the beam having a transverse notch' and the yend of the brace having a tennon adapted to fit the notch, a bolt passing through the end of the brace and through the beam straps (17) on each side off the tennon, the ends of said straps beingl joined by bolts extending through the beam and through the brace, afbrace (27) between the first mentioned brace and the beam, t-he under side of the first mentioned brace having atransverse notch for the reception of one end ofthe second brace, angle'brackets located in the angles between the two braces, a bolt passing through one end ofthe angles and through the second` brace (27), a vplate (25) on the 'upper sideof the yfirst brace (5), bolts extending through the angle brackets, through the brace (5) and through the 'plate (25) the other end of the second brace having a tennon which extends into a transverse ill INH

notch in the upper edge of the beam, a bolt pivotof the lifting frame, means for slid- -ably"connecting thel free end of the link to an arm ofthe lifting frame, and a tension Vmember for connecting the link with the supi porting'framewhen the parts assume a prefdeterinined position, vsaid tension member being* of 'suchy length that its-prevents the `link froinvniovingfto verticalY position.

A stacker having a supporting frame, anextension lifting frame pivotally attached thereto, means for rotating'the lifting frame from a substantially horizontal to a substantially'vertical position, a stop means for liin- 'iting the rotation ofthe lifting frame in one direction, said means including a tension bar lconnected with the supporting frame Vby means of a link and means for raising the tension bar when the Ilifting frame approaches the limits of its travel whereby the weight of the tensionibar will assist in bringing the lifting frame to a stop and in returning the lifting frame.

15. A stacker having a supporting frame, an extension lifting frame pivotally attached thereto, means for rotating` the lifting frame from a substantially horizontal to asubstantially vertical position, stop means for limiting the rotation of the lifting frame in oney f assist in bringing the lifting frame to a stop and in returning it.

`- link being Sudabiy connected with tiene;

- necting it to they cushion lbar when the link'- 16. -A stacker having a supporting frame, an extension lifting' frame pivotally attached thereto, means for rotating the lifting frame from' a substantially horizontal to a substantially vertical position, stop means for limiting the rotation of the lifting frame in one direction, said means including aV tension bar connected with the supportingl frame by means of a link, a spring having one end connected with the tension bar and the other end connected `with the supporting frame, and means for lifting the tension `bar ,andffor increasing the tension in the spring as the lifting frame approaches the limits ofv its travel, whereby the force exerted by the spring and the weight of the tension bar will assist in bringingthe lifting frame to a stop and in returning it, said last named means including a link having yone end pivoted to thesupporting frame and the other end slidably connected with thestackerhead.V

17. A stacker comprising a supporting frame, a stackerhead lifting frame having one endpivoted to thel supporting frame and the other provided witha stackerhead, means 'A for moving the frame from a substantially horizontal position through an angle of more y than-ninety degrees, a link having one end pivoted Ito the support-ing frame at aK-point above and to the rearoftheplace where the lifting frame is pivoted, the free endof said ing frame, ak cushion bar pivotally connected rat'its lower end to'the'supporting frame,

means carried by the extension link for Vcond lhasr been rotated through given angle by Athelifting frame, thedistance from thepivot a point ofthe cushion'barto the itspoint vof connection 'with the link 'being less than the distancev between the pivots of the cushion bar and the link vplus the distance from the" pivot of the link to its pointk ofat-tachment with the cushion bar,lwhereby a rigid structureis formed thatl serves as a stop for the stackerhead frame and `in which the cushion bar is subjected to tension when the stackerhead lifting frame is stopped.

.18. A stackerj comprising a supporting frame, a stackerhead lifting frame having one end pivoted to the s upporting frame and thefother provided with a stackerhead, means for movingthe-'frame vfrom a substantially horizontal positionfthrousrh anrangle of more' than ninety degrees, a. link having one endpiv' K oted to the supporting frame at a point above andr to the rear of the place wherethe lifting frame is pivoted, the free eind of saidlink being; slidably connected with the lifting frame, a iy cushion bar pivotally Vconnected at its lower end `to the supporting frame, meanscarried by the extension link for connecting it to the' cushion Vbar when the link has been rotated through agiven rangle by the lifting frame,`

thedistance from the pivotf point of the cushion ybarV toits `point fof connection with the linkQbeingless thanthe 'distance between the pivots of the cushion bar and the rlink plus the distance from the pivotof thejlink to its point oflafttachment with the ,cushion a supporting frame, a stackerhead lifting frame havingjioneend pivotally attachedtoV the supporting frame and the other `end prol vided'with a stackerhead, means for rotating stantially `horizontal to, a substantially vering its :lower end. pivotally connected.

the, supporting framebymeans o f a 'short' link,. a` spring having one end connected with the supporting frame and the othe'rend connectedwithjthe'cushion bar, said springt beingunder tension, a stop for limiting the movementof the bar in response toV theaction of the spring, a link pivoted tothe frame;` Y above the pivotalconnection of the cushion,`VA bar, *means for slidably connecting the linkY with Vthe stackerhead lifting frame `whereby the link will be rotated about its pivot when thestackerhead framel is rotated and means'-v` Yfor raising the cushion bar and for subject:`

the stackerhead liftingframe from asub- V ing it to tension when thecstacker'head frame Y has reachedthe limit of its mo-vementwhere- `loy the further movement of the stackerhead A frame 'will be 'resisted.

2Q, In a Stacker, inY Combination, a supporting frame, a liftin-gframe having one end pivot-ed 'there-to, inieaiis for rotating the lifting frame :aboutits pivots, 'a linlrhaving one end pivoteel to tlie'supporting frame and the otherendslidably connected with the lifting frame, and Ameans- (77) for limiting the movemeiitfof: the end of the `link away' from the lifting frame. Y

212111 a stacker, in combination, a supportng frame, a lifting frame having one end pivoted thereto, means for rotating the lifting frame about its pivots, a link having one 'end pivoted to the supporting frame Zand the other end slidably connected with the lifting frame, a hook member (76) carried by the link, said vmember having a portionexi tending along the side of the lifting frame and having its end `projecting underneath the latter, and a guide member v(78) secured to 'the other side of thelink and extending downwardly along the other side of the lifting frame. 1 i

22.r A Stacker comprising, in combination, a supporting frame, an lextension llifting frame pivoted to the supporting frame, means for rotating 'thestacker-head.about its pivot `rfrom 'a substantially horizontal to a Substantially vertical position, a link (73) pivoted tothe supporting frame at a point spaced from xthe pivot of fthe lifting frame, the free end of theV link-'being normally in Contact with the lifting frame, and slidable therealong, means (76) forrfguiding the end o'f the link as Vit moves along the lifting frame, and nieansTT) for holding the free end ofthe link again-st movement away from the frame. Y Y f 23. In a stacker having, in combination, a Supporting frame, a stacker head lifting frame 'pivoted to the supporting fram'eland mea/ns V'for rotating the staolzerhead about its pivot, a Combined stop'aiid pull bacli bar having Lits lower end attached "tothe rsugporftingfiaine by means of a linkthat perinits the b'aito have a limited up and down movement' and' means-made operative byy the movement ofthe stacliehead lifting fra-'ine towards vertical positionlfor raising the combined stop and pull back bar. Y o

In testimony whereof I affix' my signature.

JOSEPH VH. oon-n.

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