US1997327A - Revolving hoisting machine or stacker - Google Patents

Description

April 1935- N. WARSHAW 1,997,327 5 REVOLVING HOISTING MACHINE 0R STACKER v 1 Filed July 14, 1930 2 Sheets-Shet 2.

Fig.2. I Z9 7 l i '15 I 24 22 2s i as I, 9 in 1 I nvenTor. Nuthaniel Warshaw Patented 9, 1935 r STATE PAT T? FF CE" 3 1,997,327 REVOLVING HOISTING MACHINE on.

e sTAo R j Nathaniel Warshaw Mattapan, assignorto e Lewis-Shepard Company, vWatertown; Mass acorporation ofMassachusetts t w s Application muiyi r, 1930, Serial No. 467,794

4' Claims. (01. 280-946) This invention relates to improvements in ment thereof, butto permit rotative movement hoisting machines and preferably portable hoistabouta vertical axis) ing machines having a wheel-supported base, Fig. 3 is a'plan View of the base frame and parts standards rising from" said base, load supporting therebeneath, the vertical standards being shown means mounted upon said standards, and means in section; and thehoisting mechanism omitted.

'for actuating the load supporting means .toraise Thebase of the hoistingmachine illustrated the same to a desired height from which the herein omp is s Side bars I and 2 of structural load may be transferred to asuitablesupportor stselypr ab y in the o m 0f n l t by which boxes and the Iikemay besuperposed t horizontal fl s extending v0llilvvfilldly,1311;?

l0orsstacked upon each other. r vertical flanges being connected by afront girder In theuse of such portable hoisting machines i i fl l .v a m Lh its Vertical fit is frequently necessary to transport the loads flane weld df theends e r l fl ge through narrow, alleys 'of' insufficient t width to of thesidebarsll and 2 and its horizontal flange permit the turning of the hoisting machine in l sti pb d el t h horizontal fla es s sueh manner as to permit th load to be con- 't e side r a a e d ip i ri5 veniently delivered from the, load supportin ably a pair of girders 4 and5; preferably of chanmeans. 7 In other instances itis found that where nel iron, avi t ei e iabut in nd e d 1 theload supportingmeans, with the load thereto v c l flanges o e re e side up'onQis raised to a desired height that'in'tran sgirders withl i t Qb a r t fellillg the lo'adfrom the load supportingmeans and the h r n flan o t e pective i de s themo hin W111 be moved awa from the su -j e di i f qns. I f

port or stack during transfer, ther by making it h se is al p ed wi a ce tral irder inconvenient to transferthe load, opsome ti desirably formedof two channel bars 6 and I result ng in the dropping of the l ad, 1 welded at their ends to theflvertical flanges of the v A further. object'of the invention is t o lprovi de side bars I and 2 and "having their respective 25 means forjpre'ventingmovement"ofthemachine flanges extending from-the Vertical Webs in 013-" 1 when positioned for the unloading op t posite directions. Othertr ans verse girder-s3 and This is accomplished in the present invention by 9 are l i t d e th centeri'girder providing a base having supporting members to the from e d atadi$tance from il? it engage th floor d alt t floor engaging vertical central plane of theicentral girder and m eans sooohheoteo tothebase as to permit i t nc s a e o e eirderslll d. 5 'rotationof said base about a verticaljaxis, but v A fl a i t ac adapt d to P vent horizontal movement of said base rel- Support l e b 9 m ne is 1009113991 inter- I atively to the fl mediate of "the base and; floor, and means are l Another object of the htehtio istoj r tid h provided fo au in relafiiveverticel v t 35 hoisting machine ofthe character above dee e the base and h fioor.to-pemit m scribed of rigid 'constructioni and in which the q e selectivelysupperted p the track base preferably is of integral construction with t 9} e ds e n Wheels for ns r standardsintegrally securedat their lower ends m I m herelnafter F be descrlbedj J the base I 1 v r In the preferred construction the track is in 40 I These and other objects and features of the e mefe q me 0 Plvotany mount" f ed upon a eenrals ml which is secured to ei t g i fig zg x355: gfighg plates l2 and l3,preferably welded to the central Q e cup 1 l p y girder members 6 and 1, centrally of their length;

e5 legs W 1 b f e m n b k e h Vertical plates or brackets l4 and I5, located be- 45,

claims. 1 i t V tween the ends of thevertical flangesjof the Preferred" e d e of t e" invention are cross gi der members 6 and I, are welded thereto i lu d e pa y g drawings, in spaced relation andlprojvide supportsfor the which, shafts 16 of anti-friction wheels l1 a'daptedto Fig. 1 isa sideelevationof a portable hoisting e a e the uppersurface of the circular pla efi machine with. the supporting wheels positioned or track 10, ltopermit transportationof, the machine; t Y A similar anti-friction Lwheel l8"i s,rnounted :1 Fig. 2 isa similarviewof the lower portion of upon' a shaft [Shavingl its ends securedinthe the machine showing the frame supported in vertical webs oflthemembersflandQandanother such a manner as toprevent horigontal move- 1 antifriction wheel mounted upon" ashaft ;5

25 in thevertical flanges of the rear cross girder members 4 and 5. The anti-friction wheels I1, 18, and 2t desirably are located ninety degrees from each other and when the plate H3 is upon the floor and'these anti-friction wheels are in engagement therewith, permit the frame to be rotated about thevertical axis of the central shaft H of the floor-engaging plate ortrack i0. .Thus

when the track It) is resting upon the ground and the base supported therefrom the machine is prevented from horizontal movement, but the base is rotatable about a vertical axis.

In order to provide for transportation ofthe" machine base lifting members having .Wheels are, 'provided which are movable relatively to the frame in such a manner that the supporting plate l9 may be raised from the floor and suitable, means are provided for soactuating? tne eneenf as to permit the frame and plate I D to be lowered ,intoengagement withthe floor. Y Obviously means mightbe provided for moving 'the ';.plate iliJ"'relatively to the frame to accofnplishfthe" same purpose.

side bars .I and 2.,

'- trated in Fig. l.

V frame hereinafter to be described and Inithe preferred construction"rear pairs of links 22 are pivotally connected by shafts 23 to the rear portions of'the frame and whee1sf24 are rotatablysecureduponaxles 25in the lower ends of the links 22. Yokes 26, spanning the wheels 2 are pivotally connected attheir ends to the shafts of the {wheels and are connected to links ,2! extending longitudinallylof the "side bars and pivotally connectedattheir front ends to eccentric portions preferably in the form of cranks 28 of a transverse shaft '29: which is'jmounted in suitable bearings in the 1 suitablev means'" are links 21 for the purpose ofiswi'n'ging the'linlr's 22 of the rear wheels longitudinally of 'the' frame,

a and thereby causing, verticalfirelative movement f betweenthe axles2 'of "thewheels 'and the frame, I so that when the rear wheels} engage the floor the 'base will be lifted from the floor, as illus- A preferred means for" ro ating the" shaft 25 c'omprisesa wormjv'vheeliw'which is fixedly 'se- H cured'to the shaft andfisen'gaged by a' wormv 3i secured at, the lower end of a vertical shaft 32 extending through the, front girder and vjournalled at its lower'jend may suitable bracket 33 s which desirably is welded to" the side bars/arid to the front girder 3,,

" are re-enforced by gusset plates 37,? whichjare Welded to the side framesjand to the vertical standards. ,7 a The vertical standards jdesirably are formed in pivotally connected sections, the upper sections) 38 being normally, in axial alinement with the s j lowersections, Plates stand 40, preferably conflnected'by welding to thelower andupper sections 70 36 and 38 of the "standards, extend forwardly therefrom and are pro vided with overlapping end 1 portions which are connected by pivotal studsd! 75 36am 38in axial ali'nementfi Suitable detachable loclgingmeans fil are provided for holding thelupper and lower sections vertical flanges of the aid.

provided 'for i "ot ating the shaft 29 to cause-longitudinal movement of the is provided The vertical standard sections 36 and 38 desirably are of channel form and an L-shaped load supporting means or platform is mounted to slide vertically upon the standards. .The load supporting means or platform desirably comprises 5 horizontal side bars 43 preferably of angle iron connected by suitable girders (not shown) and by a floor or plate, and vertical plates or channel bars 45 rigidly secured, preferably by welding, to the ends of the horizontal side bars 3. The

platform extends rearwardly from said standards across-the vertical axis of the circular track or plate so that the weight of the load upon the plat- ,form will' usually be supported in approximate alignment with said vertical axis. The antifriction rollers 46 and 47, pivotally mounted upon the vertical members 45 of the load supporting means, engage respectively the outer and inner faces of the rear flanges of the vertical standard meansinf its vertical movement.

fI'he load; supporting means desirably also comprises transverse channel bar 48 which is welded to the side bars 43 and' the vertical members'j'45 sections 36 and 38' and guide the load supporting 2 of theioad supporting means at their junction or elbow, and a cable 59, which is secured to the channel b24748, passes over a sheave 50 mounted in suitablebearings in aframe 5| whichrests at its lower end upon and is secured to the trafnsverse channel bar 52 which is welded to'the upper section 38" of the standard a'short distance below its upper end'and is also connected to afl transverse plate 53, which preferably is welded tojthe upper ends of the upper sections as of the stan lhecablele isi mour ited at'fitslower end I iibn a'winch 54, the shaft 55 ofpwhichjisjournalled in a supplemental frame comprising a"vertic'al standard "5E mounted at itfs lowerfend upon'fthe I front cross" girder l and 4 connected by a plate" 5] to a horizontal cross irderfili"'whichpfeferably i weld d to the l wer ction 3 Toff-he s a i ardsj Suitable means are provided for actuating the winch," such 'as a large' gear (notf'shown) relatively small'pinion upon a shaftes journalled in the standardsfifi and provided with ,a'cr'a'nk Bil, said gears, being enclosed "i a casing6 1;- A suitable brake contained in; a casing 62 andiopload supporting 'The "winch mechanism and'the jb'ralremechani sm desirably may be of the characterdisclosed fconnected to 'th e 'wi nch shaft 55'me'shingfwith a J t' i e the descent 'of the" in my prior Patent No. L761 1,215, grantedDecem-" 'ber31, 1'929 or the patent to Shepard andWarshaw No. 1,672,173granted J'u'ne'5, 1928, andneed not be 'further'described. U 7

Any suitable means may" be provided for 'rai's-,

ing the front end of the base relatively to these floor; "In the preferred constructionthe mechanismfor, accomplishing this purpose comprises a steering wheel or wheels timounted in a yoke 64 having a vertical steering post fi5 rotatably a bracket 66155 i and slidably journalled in arms of rigidly connected to the vertical frame member 55 and having a tongue connected thereto operablato rotate thefs'te'ering post"for"steering 1 purposeaor t move the steering post vertically relatiVely l dsaidbracket. j v H s The mechanism forraising the" front end-of emes; h hv i ustrate herein; iseusstantially identical with that disclosed iifPatent No.

1,702,698, granted to Ralph M. Lo'v ejoy on Feb- 29 to move the crank arms 28in a direction to In this construction afsplit collar 61, 1 which is clamped upon the upper end of the steering post, by a bolt 68, is provided-with a pair of upwardly extending ears in which is mounted a transverse shaft 69 forming a pivot for a bifurcated tongue extension. The tongue extension lllis -p'rovided with a tubular portion I I in which the tongue 1 2 is slidably mounted, but limited in its movement.

by a pin 13 extending through slotsin-the dia metrically opposite sidesof the tubular'member I I. A bell cranklever, which is mounted upon. the shaft 6 9 intermediate of the ears' on the collar 61, has an extension 15 adapted to'be releasably" engaged between the lower-endof thetubular tongue memberandthe end ofthe-tongue when the latter is thrust inwardly through thetubu lar member. The bell'crankleve'r I4 is-pivotally connected to the lower end of a strut l 6, the upper i end of which is pivotally connected to'a swivel ll having a stem rotatably mounted ina bracket 18 secured to the frame member 56, 1

Thebell crankarmlfl and the struty'liform in effect a toggle which may be stra'ightened to force the steering post downwardly and thereby raise the front end of the platformpasiillus tratedin Fig. 1, or broken as illustrated inFig. 2,

i to permit upward movement of the steering post;

thereby lowering the base toward the floor.

The pivot 69, upon which the bell crank lever is mounted, and the pivotal connection of the arm 14 of the bell crank lever, and the lever 16,

, is such that the bell crank lever may be rotated to position the pivotal connection between the arm 14 and the strut 16 upon either side of the vertical axis of the steering post, so 'that when,

to transport the hoisting machine from one position to another the handle35 is rotated in a proper. direction to cause the rotation of the shaft draw the link 21 forwardly, thereby swinging the rear links 22 upon which the wheels 24 are mount edforwardly to a vertical position, thus raising the rear end of the base frame.

The tongue 12 is then moved downwardly in the socket H until the end of the tongue, extending therethrough, engages the arm 15 of 1 the bell crank lever, so that it holds it against the lower end of the tubular portion of thetongue extension.

Downward swinging movement of the tongue will then depress the arm 15 of the bell crank lever and straighten the toggle, thereby causing relative movement between the steering post and the bracket 18 which is fixed to the frame, thus raising the front end of the base. When the bell crank lever is in this straightened position, the arm 15 of the bell crank lever will engage the steering post, thereby locking the toggle in its straightened position as the pivotal connec i tion between the toggle and strut IGwill be in front of the vertical axisof the steering post. When in this position the tongue may be moved outwardly, thus withdrawing its end from-engagement with the arm 15 and the tongue thus freed to steer the machine. v t i In usual operations of the hoisting machine at equally spaced mounted upon the rear end of said frame havthe winchcsis then operated ltd-Iowan; the load supporting means approximately tothe level of the upper face of the basew Theloadis then.

placed upon the platform and the hoisting ma chine then drawn "by its. tongue to" the" desired destinationmlfc it is desired to transfer the load from thesload supporting means to a floor'or to a stack "at right :angles; orrat. any other angle to theposition of'thewframe of the truck, the

rear end of. the base may be lowered" by rotate ing the crank 35 iir a "direction to swing the zrearolinks 24icrearwardly sufliciently to permit the plate 1or.trackfto engage the floor and to.

removethe-zweight, or; the truck and its. load from the rear wheels.- i

The steering tongue 12 maythen be forced V downwardly: to engage-the: end 15 of the bell,

crank eleven" Upwardumovementl of the tongue,

will thereupon swing the bell crank lever about its'pivot, thus breaking the toggle and permit ting the frontj end of thevbase to be lowered, so

that the base :wilibelentirely supported by the circular plate or track In; i

"Inasmuch as the? base "is pivotally mounted centrally upon ,the plate or track 10, and the plate ortracklm engaged by the anti-friction rollersll l8 and 20the base of the truck may then berotatedabout'a vertical central-axis such distance as may :be required to: present the rear endbf-the load supporting means to the floor,

shelf, or pile 5 upon which the load is to be deposited. The winch may then be actuated to raise theload supporting means to the desired height, so that the load maybe conveniently transferred from the load supporting means to the desired position. i

It will be understood that the embodiment of the invention disclosed herein is of an illustrati've character and is not restrictive, and that various changes in form,1construction and arrangement of parts may be made within the spirit and scope of the following claims.

Having thus describ Letters Patent, is: i

d the invention, what is claimed as new, and desired to be secured by 1. A hoisting machine comprising a base frame having a circular base-supporting plate of a (11-, ameter approximating the width of'said frame adapted to rest upon the floor and pivotally connected axially to said frame, anti-friction members mounted on said base frame to engage said plate in proximity to the periphery thereof and intervals, links pivotally ing floor-engaging wheels, a shaft extending across said base frame provided with eccentrical- 'ly disposed portions, links connecting the eccentrically disposed portions of said shaft with the respective, rear links, a worm gear rigidly connected to said shaft, a worm having a shaft mounted in said base frame'engaging said worm gear operable to swing said links about their frame, a front steering wheel, and means for causing relative vertical movement between said pivots to raise and lower the rear end of said steering wheel and said base to raise the front end thereof. 1

t 2. A hoisting. machine comprising a base hav-, ing side bars formed of structural steel, end, "girders and central girders of structural steel welded at their ends to said side girdersto form an integral base, vertical standards mounted upon the front portions of said side girders and i welded thereto, a circular plate of a. diameter approximating the width of said framepivotally mounted; to rotate about a ;vertical axis: centrally;

of: said centrali'girders;.rear links. pivotally. mountedlin. said sideylgirders; having, :wheels mounted upon their free ends, a; transverse shaft:

mounted in the frontpportionof. said sidegirders: provided atrits ends withdownwardlyextending cranks, links connecting thecaxles of. said rear wheels to \said cranks, a Wonng'ear upon saidshaft, means including axiworm engaging-said,

gearv operable to-jswing said Ipivotally mounted links, and thereby to raise the rear;end of :said. frame, steering. mechanism: mounted on the ffront end. .ofsaid frame, and meansl'for: causing relative movement vbetweensaid base. and said steering mechanism to raise the; front:end:-of said base. 7 w. '3. Ahoisting machine comprising a base: hav-.

ing side bars of structuralsteel; a transverse :cen-. tral girder of structural steel welded to said sidebars; other transverse girders; of. structural steel welded to said side bars at; substantially equal distances .from': saidrcentral girdenxa circular plate of a diameter approximating the width of said framevpivotally mounted upon the center ,:of said central girder, anti-frictionlrollers mounted onsaidcentral girder in proximity tothe respec: tiveside bars. tor engagesaid plate nearcitsperiphery, anti friction: rollers mounted upon the other .transversegirders in the longitudinal axis of the frame to,;engagesaid plate near its periphery, reanwh'eelslconnected to said frame, means for raising and lowering *said 3 rear; wheels relatively gtoxsaid frame, a frontsteering mechanism connected tosaid frame,.and meansfor raising and-lowering said: steering mechanism relatively tosaid framei V r I 40A hoisting machine comprising a base having side-bars of structural steel, a central trans,

verse girder formed 'of structural bars narrowly spaced apart and welded at their ends to said upper and lowerplates, anti-friction rollers,

mounted-between-the members of said central girder in proximity to the respective side bars to engage said circular ;.platexnear: its peripery, other anti-friction rollersmounted between the membersof said other -transverse girders in the longitudinal-axisof the frame to engage said plate, rear wheels connected to said frame, means for,

raising fandlo-wer-ing said wheels relativelyto said frame, a front steering mechanism connected to said frame, and means forraising and lowering said steering mechanism'relatively to said framev NATHANIEL WARSHAW.

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