US1646729A - Elevating truck - Google Patents

Description

j H. s. GERMQND. JR.. E1' Al,

ELEVATING TRUCK Filed oct. 4, 192:5

4 sums-substl x H. s. GERMOND, JR., E1- AL ELEVATING- TRUCK' Filed 061'.. 4, 1923.

4 Sheets-Sheet 2 ATTORNEYS.

t., I. O: 25 1927 H. s. GERMOND. JR.. ET AL,

' ELEVATLNG TRUCK s Filed oct. 4, 192s 4 sheets-sheet VENTOR Q0 l M MW/Wg? ATTORNEYS,

Patented Oct. 1927.

narran srfrfES HENRY SHELDEN GERMOND, an., or BAYONNE, AND

,tif y 1 FRANK L. EIDMANN, 0E Noi'tf'rrr'l BERGEN, NEW JERSEY, AssIGNoEs fro SAID lHENRY GERMONDJJR.

ELEVATING TRUCK.

Application vl'e. October 4, 1923.A Seri-a1 No. 6665,441. c t

`that type of Ielevating trucks including a member movable substantially vertically in vor parallel to the axis of swivel of the steer ing wheels, said member being adapted to be so connected to the -draft handle as `to "elevate the platform by swinging of the handle in vertical planes Vwith the handle in any of the' usual steering positions at angles to 'the longitudinal median line of the truck. ,l

One object 4of the invention is to Yprovide a truck of the character described embodying a novel and improved actuating mechanism for raising saidplatform by means of said draft handle including a member vertically movable substantially in the `line o'f axis of the 'steering swivel and connected to said elevating platform, and `means for connecting said draft handle to said ver.- vtically movable member while "said lhandle is in any usual steering position for raising Vsaid platform. l v

Another'object is to provide in such a triufk novel and improved means Yfor automatically disconnecting the ,draft handle from operative relation to the-said vertica1- Ilyinovable membery and elevating platform after the platform has been raised to its maximum height, Iby a longitudinali pull upon the handle such as would ybe "incident Vto drawing the trucl'r, whereby the 'possibility of the handle beingl accidentally thrown upwardly by the descent of the plat- Y Y form is obviated. c v A further object is to provide novel'and improved means for preventing Iaccidental upward swinging of the 'handle aftergthe load has been elevated and before the han I ldle lhas been disconnected from'the elevating` platform.

Other objects are toprovide anfelevating truck ofthe general character describedin-l cluding a-member connected `to lthe Velevating platform fand vertically 'movable inthe line of :axis of the steering swivel andzf'ormed with a substantially horizontal v`segnientail liange adapted to beengaged Vby 'one end of Sa 'thrust pawl pivotally connected to one end ofa lever pivoted on :a horizontal axis intermediate itsfe'nds oni saidswivel, the other endv orf-said lever being adapted toV sep-` rrr-ably connect with the draft handle pivotally connected'to said swivel' .on `said pivot of said lever, whereby V:sai-'dll'e'ver 'nrayv'befw oscillated about its 'pivot by said Ihaudle simultaneously with swinging'of the latter about said pivot to raise the elevating Vpla form and be disconnected 'from'sa'id handleafter said platform has vbeen raised, and

to obtainl otherresults 'and advantages yas may be brought vout bythe following de-v scription.

- Referring tol the accompanying drawings,

Vin which thefsame reference characters des- `ignate Icorresponding and like par-ts,

Figure 1 is a partial sectional land-'partial side elevational Viewl of an elevating vtruck embodying our invention, vthe elevate v ing platformbeing shown inf-itslowermos't and vnormal position f Figure 2 is a top plan view of lthetiuck; Figure 3 is aside elevation of the jtruck with the platform inv its upper-most position and the draft'handle shown at the end Iof its `elevating operation; f Y l I A Figure 4 is a view similar to Figure '3 showing Athe draftV handle in the position assumed when it is utilized-for draw-ing the trucl; from point to'point,zthe'platform actuatingV mechanism being shown vin inoperative position; f

" Y Figure 5 is a`view similar toJEig-uree lshowing 'the manner of releasing the Aelevating platform to. its lowermost position;

Figure 6 1s a fragmentary side Veleva-tion o'f theV forwardr portion of the truck showing 'y the operation ofthe draft handle into vthe position Ato elevate the platform, :and

Figure :l 1s afront elevation of the for# u ward' end Aof vthe truck showing the mannerl loo c I of .operating'the elevating --mech'anis'm at ydifferent l steering vpositions of the draft handle.v t Y' [In'the specific embodiment of the in ven` tion shown on fthe drawings, 'the' reference character-ier designates 'the *frame "of `the Ytruck which `may be of .any suitable construction andisf mountedat @the rear "end on sd.. A`

lio

wheels 1 journaledy on a transverse shaft 2 (see Fig. 5). The forward end of theframe A is provided substantially centrally of its width with a king pin 3 revolubly journaled inthe frame and carrying at its lower end a pair of steering wheels 4, this construction enabling the truck to he steered by rotation ofthe king pin 3.

An elevating and load sustaining plat-v form B is mounted on the frame A in such a mannerethat the truck may be pushed beneath a load which is spaced yfrom the floor as by means of skids, the said platform being adapted to be elevated on the lframe A to -raise the load fromthe floor onto the truc-k. Anysuitable'means may be utilized for so mounting the'platform on the frame, but in the present instance a pair of parallel links 5' is shown as pivotally connected between the frame A andthe platform B at eachendgso that forward motion of the' platform causes oscillation of the'parall'el linksi which in turn raises the platform on otlpin 7 a] steering and draft handle 8 the pivoted end ofwhich isalso bifurcated and provided with substantially longitudinal slots 9 invits arniswhich receive the pin 7.

The free end of the handle 8 .may be provided with liand-holds 10 to be grasped by an Operator for pulling the truck from place to place,A and with this-construction it will be obviousthat la pull upon the handle 8 will through ,the ybracket 6 serve to draw the truck, and at the saine time horizontal swinging of the handle will rotate the-'king pin land the steering wheels l so as to steerV the truck. i i y A` sleeve. 11 .is slidahly mounted on the 'kingpin 3 abovethe frame A vand is proyided at its upper end with a substantially semi-circular flange 12.." The rear sidev of said sleeve is provided with 1a. longitudinal v' .the platform has been raised to its'upperslot 13 which is `connected by/a pivotpin 111 /to one end of a link 15 the `other end of which Aispivotally connectedbyajshaft 1G to the Y forward end of the platform B. Thelength of said slot l13 is substantially equalvto the distance of vertical movementv of theplat- Vform B. The sleevev11 normally rests upon the top of the frame A and when the platform B is in its lowermost position the pivot pin 14 is disposed in the lower end of said slot. Obviously, when the sleeve 11 is raise-d upwardly on the king pin 3 the platform B will be pulled forwardly and through the parallel links 5 raised from the frame A.

A lever 17 is-"pivotally mounted intermediate its ends on the pivot pin 7 and disposed between the arms of the bifurcated end ofthe handle 8. The inner end of said lever has pivotally connected thereto Va thrust pawl 18 which norinallyunderlies and engages the flange 12 of the sleeve 11. l The other end of said lever V17 is provided with a head 19 adapted to cooperatewith a tooth or lug 20 formed at the base of the bifur-v cation of the handle 8 so as toY interlockrthe said handle with .said lever and cause the lever to swing about its pivot simultaneously with downward swinging of the handle 8 in Y vertical'planes. It will be observed that the sleeve l11 is non-rotatable due to the connection with the link 15, and that thethrust pawl 18l may slide lunder the vflange 12 as the handle 8 is swung in horizontal planes to rotate the king pin 3. Thus,the thrust pawl 18 is in position to engage the flange k12 of the sleeve 11 in all vof the usual steering positions of Ithe handle v8 at angles to the longitudinal median. line of the truck. VViththe handle 8 interlocked with the lever 17, when the handle is swungidownwardly about the pivot 7, the lever 17 is caused to move therewith so that the thrust pawl 18 is raised. An upward thrust is thus im` posed upon the sleeve 11 which moves the same upwardly on the king pin 3 so as to elevate the platform B, the positions of the handle, the lever 17 and the sleeve 11 when the platform is raised being shown in Figure 3. v l v y Any suitable means for retaining the platform in its elevated position maybe utilized,

but in the present instance we khave shown the forward end of the platform provided with a rearwardly facing tooth or lugV 21 which is adapted to be engaged by one end of a. detent lever 22 pivotally mounted intermediate itsends'on the frame as at The detent 22 is normally forced into position to engage the lug 21 as the platform is raised,

by means of a spring 24e. z Thus, when the .platform reaches its uppermostposition the detent lever 22 rides over the lug 21 and en. gages with the rearward face ythereof to hold c the platform against downward vrmovement; It is .a feature of the invention that after mostposition the steering handle 8 is autoincident to drawing the truck, so that the possibility of the handle being vaccidentally B .be .accidentally released, is obviated. ThisVY function is vaccomplished through the vpin andV slot connection 9 of the handle with Vforcibly thrown upward should the platform cir ` 'adapted to fall by the `pivot pin 7. Vhen a pull is exerted upon the handle, the handle slides forwardly on the pin 7 so as to disengag'e the lug 20 from the head 19 of the lever 17y thereby disconnecting said lever from the handle and permitting the lever, by action of gravity on the 'sleeve l1, to swing upwardly to its nori'nal 4inoperative position, as shown inFigure 5. Vhen the lever 17 is so released the -sleeve 11 slides downwardly on the lring pin 3 whereby lthe pivotpin 14 of the link 1 5 is positioned in the upper "end of the slot 13, so that should the platform B then be released the pin 14 would slide downwardly in! the 'slot 13 Without any effect upon the lever 17.

Itis also Vin'ipor'tant that means be provided for preventing injury to an operator by upward swinging' of Vthe handle incident to descent of the platform should the truck be left with the platformelevat'ed and a load thereon 'without disconnection of the handle fiofm the lever 17.. Thus, we providey a detent 25 having one end pivotally connected I'at 26 to vthe bracket 6 and the other end action of gravity into en'- fg'a'gement with'a lug 27 provided on the handle 8. v'lV'hen the handle is swung downvwardly to lelevate the vplatform B, the det-ent 25 follows the handle Yuntil the latter reaches Hits lowerinost position when the detent falls behind the lug 27, as shown in Figure 3, whereby upward `iiiove'm''ent ofthe handle vis prevented. 'A lspring 28 'may be secured to the detent'25 to engage the 4bracket 6 for initiating movement of the detent 25 into its zoperative 'position when the handle ,8 is swung downwardly. Obviously, Mthe platform B may be released from its elevated position by oscillation of the detent lever 22 to disengageit from the 'lu-g 21. nfleansisl preferably provided-for convenient vactuation of said` detent lever when'the operator is vstanding in any of the us'ualsteering positions vrelative to the truck,

and such means is shown vas comprising a Vsubstantially semi-circular treadle 29. ar-

`ranged at the forward fside of the 'sleeve 11 'and 4overlying vthe operating end ofthe' detent lever 22, said treadle being vpreferably pivotedto Vthe frame A on the saine axis as the lever v22. Thus, downwardpressuie on the treadle 29 by the foot ofthe operator, 4as shown in Figure 5, Awill disengage the detent lever 22 from the lug 21 'and permit descent' of the platform.

To prevent accidental or unintentional ractuation o Y 'is operatively connected to the lever 17, the 4handle may be provided Vwith arm's 31 adapted to underlie the tieadle 29 `when the handle Y 'is in its loiverinost position as shown. in Figure 3. It will be observedV that there areA Vthree safety-features of "thet'ru'clrwhich pre- 1vent the possibility of injury lto a-n operator by yupward swinging of the handle on accif the treadle 29V when the handle dental desceiitfof the platform, namely, the

automatic disconnection of the handle from the lever 17 when the handle is pulled forwardly, the detent 25, and the arms 31to unl de'rlie the-treadle 29.

Any lin-own means maybe utilized for re* tarding ,the descent of the platform, and in the present instance we have xshown the usual cylinder and piston "construction 30, the piston being pivo'tally 'connected to the pl'atforni B ,and one 'end of the cylinderl pivotal'l'y connected to the frame A.

In the operation of the truck, assuming 'the platform in its 'lower'most position, the lever 17 will be swung upwardly into the position shown in Figui-e 1. rVhen it is desiredto raise the' platfor'nifB the 'handle 8' is swung upwardly about its pivot7, as ind-i'-A cated by Figure 6, until the lug 2O on 'the handle engages the head 19 'of the lever.

The-head of the lever is preferably formed with an approach canil 32 over which the lug 2O is adapted to ride, said 'approach cam automatically lifting and guiding the handle over the head 19, lifting. action being pen niitted by the pin and slot connection 7 9.

Tt will be ynoted that thisconnection'of the handle Swith the lever 17 can take place at any of the usual steering positions ofthev handle, as clearly shown in Figure which the action is shown asv taking placeY at two positionssubstantially 180,O apart. l/Vhe'n the liandlefhas beenso connected to tlielever 17 the handle is swung downwafrdly, as shown in Figure-3, whereby the platform is, elevated as' above described. The Vhandle 8 and the lever v17 inleffect form a two-part handle,.one.of said parts 'being ful'cr'umed to the steering swivel comprising the yking pin?) to swing 'in 'ajvertical plane and Acapable of movement Awith said swivel 'about the sleeve 11,V while the other part, the

lil() handle8, is adapted tobe interlocked with the first-mentioned part wh'ensw'ung downwardly ina vertical plane and f'icjtu'atesaid first-mentionedpart about thefulcrum to elevatek the platform.

While we 4have shown and described an i i elevating truck embodying "certain preferred details f'of construction, it ywill be understood that this Ais inai-nly for 'the' purpose'of illust'i'ating theprinciples of "the invention, and

that many modications and changes can be made inv the said details without departing fronithe spirit or scope 'of the invention. Therefore, we do `not desire to loe-understood as limiting ourselveseXcept as required byA .the following claims when construed inthe -light of the prior art. f f.

Having thus described the invention, what we claim is:- v v 1. An elevating truck comprising a lmai-n- -fraine mountedon wheels a-t 'its rearend, a

steering swivel 'carrying'wheels journaled f i thefron't'end of said. frame, afmembe'r move said platform.

ablel in substantially the line of aXis of said steering swivel and having a peripheral flange, an elevatingl platform mounted on saidframe for vertical movement, an operative connection between said member and said-platform, an articulated two-part handle for actuating said member, one` partof` said handle being fulcrumed intermediate its ends on said steering swivel to swing in vertical planes, while the other part is adapted'to interlock with the first-mentioned part as the second-mentioned part is swung downwardly in a vertical plane to actuate said first-mentioned part, and a thrust pawl interposed lbetween said first-mentioned part andsaid -ilange to raise said member as said first-mentioned part is actuated and elevate 2. An elevating truck comprising la main frame mounted on wheels at its rearend, a

steering swivel carrying wheels journaled in the frontend of saidy frame, a member movable in substantially the line of aXis of said steering swivel and having a peripheral flange', 4an yelevating plat-form mounted on said frame `for vertical movement, an operative connection between said member and said platform, a lever pivoted intermediate frame mounted on wheelsy at its rear end, a

steering swivel: carrying wheels journaled inthe front end `of said frame, a member movable Vin substantially the line of aXis of said steering swivel and havinga peripheral Harige, an elevating -platform mounted on.

said frame for vertical movement, an operative connection between ksaid member. and said platform, a lever pivoted intermediate its ends on said steering swivel to swing in vertical planes,.a thrust pawl interposed between one end of said lever and said'flange on saidmember, and a draft handle pivot- 'ally mounted on said steering swivel co- Y axially with said lever and adapted to interflange, an elevatingplatform mountedl on said frame for vertical movement, an opera-y tiveH connection between said member and wsa-id plat-form, a lever .pivoted intermediate lock with said lever as the handle is swung downwardly to actuate said lever and raise saidnmem'ber to elevate saidnplatform,

a. An elevating 4truck comprising' a main frame mounted on wheels atits rear end, av

steering swivel carrying wheel journaled in vthe front end of said frame, a member Inov-V able in 'substantially theline `of axis of said steering swivel and having a peripheral its ends on said steering swivel tol swing in vertical planes, athrust pawlv interposed between one end of said lever and said flange on said member, and a draft handle pivotally mountedl on said steering swivel and adapted gli the front end of said frame, a member mov- Y able in substantially the line rof aXis of said steering swivel and having av peripheral flange, an elevating` platform lmounted on said frame for vertical movement, an operative connection between said member andV said platform, a lever pivoted intermediate its endson said steering swivel kto swing in vertical planes, a thrust pawl interposed between one end of said lever and sai-d flange onsaid member, a draft handle having a pin and slot connection with saidfswivel for longitudinal movement and pivotal movement in vertical planes, and means for causing interlocking vof said handle and said lever as the handle is swung downwardly, said interlock between the handle and said lever beingr released by a longitudinal pull upon said handle. Y

6. The ,elevating truck set forth in claim 5 in which said pin and slot connection'of the handle is with the same pivot which supv ports Vsaid lever. l y y Y 7. An elevating truck comprising main frame mounted on wheels at. its rear end, a

steering swivel carrying wheels journaledin the front end of said frame, a member movable in substantially the Vline of aXisof said steering swivel, an elevating platform mounted on said framev for vertical movement, anoperative connection between. said member and said platform, 4a handle pivotally connected to said steering swivel to swing in a vertical plane, said handlel being bifurcatedr adjacent-its pivot and formed with a lug at the base of the bifurcation, a lever pivotally mounted between its ends on said pivot of the handle betweeny the arms of said bifurcations, one end of said Vlever being formed to interlock with said lug onA th'erhandle as the handle is swungvdownvwardly to actuate thelever, and an operativeconnection between the other end of said lever and said memberA to raise the latter and elevatethe. platform as said lever is actuated. n f .Y .I

8. An elevating truck comprising a main frame mounted on wheels 'at its rearvend, a

steering swivel carrying wheels journaled in the front end of said frame, a platform mounted on said frame for vertical movement, a handle pivotallyymounted on said steering swivel to swing in a vertical plane, means for connecting said handle to said platform to raise the latter as said handle isl swung" downw-ardly, and means adapted to be interposed between said swivel and said handle between theV free end of the 'platform to raise the latter as said handle is 'swung downwardly, and a detent connected to said frame and adapted to engage said handle when the latter is in its lower-` most liftingposition to hold the handle.

against upward movement while the same is operatively connected to the platform.

10. An elevating truck comprising a main frame mounted on wheels at its rear end, a steering swivel carrying wheels journaled in the front end of said frame, a platform mounted on said frame for verticalV movement, a handle pivotally mounted l on said steering swivel to swing in a vertical plane, means for connecting said handle to said platform when the handle is in any steering position to raise said platform as the handle is swung downwardly, and a detent mounted on said swivel to engage said handle in any of said steering positionsv at its lowermost lifting position to hold said handle against upward movement.

l1. An elevating truck comprising a main frame mounted on wheels at its rear end, a steering swivel carrying wheels journaled in the front end of said frame, a platform mounted on said frame for vertical movement, a. handle p ivotally mounted on said steering swivel to swing in a vertical plane and having a lug thereon, means for conw necting said handle to said platform to raise the latter as the handle is swung downwardly, and a detent pivotally mounted at one end on said frame with its other end adapted to follow said handle as the same is swung downwardly and engage said lug when the handle reaches its lowermost lifting position to hold the handle againstV upward vmovement. 'i

12. An elevating truck comprising a main frame mounted on wheels at its rear end, a steering swivel carrying wheels journaled in the front end of said frame, a platform mounted on said frame for vertical movenient, a men'ib'ermovable in si'ibstantially' the line of of said' steeringx swivel=randhaving a pin and sloty connection wit-li safid' platform are capable of relativ-e movement' a distance substantially equal to'thegdistance of movement of said platform, handle mounted on said swivel to swing in a vertical plane, and'V means connected' to said member and adapted to separably interlock with saidlhandle as the," latter ris swung downwardly to raise said Ymember and ele-fv vate vsaid platform; saidhandle and means being separable after said platform has been elevated and vpermitting said member and said means to return to their normal inlplatfo-rn'i whereby said ymember and; said"` operative positions, whereby subsequent descent of said, platform takes place independent of said member.

13. An elevating truck comprising amain frame mounted on wheels at itsv rear end, a

steering' swivel carrying Awheels journaled in the frontend of said frame, a platform 'i mounted on said frame for vertical movement, a member' movable .in substantially the line of aXis of said swivel, a link having apivotal connection at one end with said platform and a pin and slot connection at the other end with said member to permit relative movement of said member and said link a distance substantially equal to the distance of movement of said platform, a handle pivotally mounted on said swivel to swing in a vertical plane, and means connected to said member and adapted to separably interlock with Vsaid handle as vthe latter is swung downwardly to elevate said platform, said handle and said means being separable after elevation of said platform to permit said member and said means to return to their normal inoperative positions.

lll. An elevating truck comprising a main frame mounted on wheels at itsrear end, a steering swivel carrying wheels journaled in the front end of said frame, a platform mounted on said frame for vertical move-v ment, a member movable in substantially the line of axis of said swivel and having alon'- gitudinal slot of a length substantially equal to the distance of movement of saidv platform, a link pivotally connected at one end to said platform, a pin passing through said i slot and the other end of said link to connect said link to said member, a handle pivotally connected to said swivel .to swing in vertical planes, and means connected to said member and adapted to separably interlock' with said handle as the latter is swung downwardly to elevate 'said platform, saidl handle and said means being separable after elevation of said platform.

. 15. An elevating truck comprising a main frame mounted on wheels at itsrear end, a

steering swivel carrying wheels journaled in the front end of said frame, a platform A mounted on said frame for vertical movethe pivot of saidhandle and adapted to ment, af member movable in substantially separably interlock atene vend with said 15 the line of axis of saidswivel and having a handle. as the latter is swung downwardly, longitudinal slot of a length substantially and a thrust pawl pivotally connected at one 'l' equal to the distance of movement of Said end to the other end vrof said lever and enplatform, a link pivotally Connected at one gaging Said member to raise the same as said end to said platform, a pin passing through handle i3 swung downwardly and elevate the'20 said slot and the other endY o1 said link to platform, said handle and said lever being connect said link `to said member, a handle adapted to be separated by a longitudinal 10 having a pin and slot connection with said pull upon the handle. Y swivel for longitudinal'movement and for pivotal movement in Vertical planes, a lever HENRY SHELDEN GERMOND, JR. pivotally mounted intermedia-te its ends on FRANK L. EIDMANN.

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