US1748365A - Crane - Google Patents

Description

E. H. REMDE Feb. 25, 1930.

CRANE Original Filed June 22. 1925 INVENTOR ATTORNEY Patented Feb. 25, 1930 U ITED STATES PATENT OFFICE.

' EDWAR REMDE, or'foLnvELANn, onio, ASSIGNOR To 'rnn BAKER-RAULANG 001v:-

" .IEATNY, on CLEVELAND, OHIO, A CORPORATION OF OHIO GRAN E Original application filed J'un 22, 1925, Serial No. 38,647; Divided and this application filed October 3,

- i y 1925.Seria1 No. 60,357.

This-invention relates to a crane mounted on wheels certaln of wh1ch are driven, where- 'by itmay be operatedfor effecting certain operations or moved from place to place. -..This-application is a division of my orig.-

inal application filed June 22, 1925 Serial No. 38,647.

One object of the invention is to provide theboom-with an extension member adaptedi'to engage loads and elevate them to and I from" positions beyond the reach of the liftingelement suspended from the free end of I the boom. I

either in an operative position or in 'an'inoperative position.v

" Other objects oflthe invention will be apparent to'those skilledfin theart to which my inventionrelates from the following description taken in connectionwith the accompanying drawing, wherein Fig. l'is, a side elevation of a crane embodyingmy invention.

, v.Fig. 1 is a fragmentary side view showing l the extensionmember supported inoperative position.

Fig. '2 is afragmentary plan viewof the .maiir'boom' showing the extension member mounted thereonin its inoperative position.

",Fig. 3 is'asection on the line ,33 of Fig. 2. Fig. .4is a section on'the line4 4 of Fig.1.

Fig. 5 is a section on the line 55 of Fig. 1.

fIn tl16 drawings, 1 indicates a frame of any desired shape and' form, preferablycom- I prising a main portion 1* on which the mechframe. v r .7 ;4- indicates a motor arranged to drive the i 3 wheels 3 through a suitable transmission mechanismin a housing4.

The traction wheels 3 are ivoted: on the lmusingmem e s 3in awell n rm ma ner so that the wheels may be driven while being steered. I

8 indicates the axle for the trailing wheels 2, having at its opposite ends suitable knuckles, which serve as pivotal supports for the Wheels 2, whereby they may be steered. 9 indicates connections between and operatively'connected to the wheels 2, 3, for steering them simultaneously. 11 indicates a support on which-the operative stands while operating the truck.

l5indicates a dash on which are mounted certain of the controlling oroperatingelements for the truck and the load supporting and engaging members. 16 indicates a foot pedal associated with the platform 11, and arranged to control the release and applicationof a brake mechanism, indicated as an entirety at 17 preferably constructed to normally act on an element driven directly by the motor. 23 indicates as an entirety a controller for. cutting in or closing the circuit to the 'motor 4, preferably operated by a lever27. Y

33 indicates a vertically arranged axle or pivot member on the frame portion 1 forming a shaft for a frame 34. The frame 34 forms a base for a battery or batteries 36.

40 indicates as an entirety the boom pivoted on the inner end of the frame 34. 41 indicates a motor: supplied by current from the batteries 36v and operating through a power transmitting mechanism to drive two winding drums, one'for the flexible member 40 rotated from the position shown in Fig. 1 in either direction to effect slewing of the boom 40. For this purpose, the pinion 49 is driven byamotor49. I I H Y The boom 40 preferably comprises a pair of spaced channel members 40 connected, by bars 40"., 40,which may be curved forwardly and downwardly ,at' their upper ends. The

. channel members are mounted at their lower ends on a pivot pin 52 carried by the frame 34. The load engaging member 55 preferably comprises a hook depending from a casing 56, which in turn'is supported or suspended by the cable or other flexible connection 57.

As will be understood, the cable winding drums are rotatedindependently of each other to swingthe boom 40 and raise or lower the member the cable iO being reeved around sheaves, certain of which are shown at 60, 61, and connected to a link pivoted on the rod 39 and thecable 5'? being reeved around sheaves 69, 70, mounted on the adjacent upright 37 and pin 52, respectively,

1and-sheaves71,72,'mounted on the boom 40.

The sheave 71 is carried by a shaft G'S supported by the plates '53'andthe sheave '72 is supported by a cross shaft 72 T indicates an auxiliary boom adapted to be detachably and pivotally connected at its inner end to the boom 40 and. supported at or near its outer'end by the load engaging Q19". ment 55 which detachably engages therewith. The auxiliary boom 170 maybe of any desired length and is preferably formed from a pair of channel bars secured together back to back in any desired manner. The connection of the auxiliary boom'lTO with the main boom 40' is preferably of the universal joint type. Near the outer end er the auxiliary boom I provide an upstanding plate 178. The plate 178is formed with one or more openings 179, in which the hook 55 is inserted to support the outer end of the boom 170; The plate 178 is preferably clamped between thechannel bars constituting'th'eauxiliary boom. 180'indicates a load engaging device suspended from the auxiliary boom, preferably near its free end. This device may be of any'desired form, depending upon the shape and nature of the load that is to be engaged, but it is herein illustrated asa hookhaving'a swiveled shank connected by links to a cross barsupported in openingsformed in the bars of the auxiliary boom 170. The device 180may. be used to detachably connect the free end of the boom 170 to the main boom 40, as shown in dotted lines inFig. 1, to holdit in aninoperative position when not in use or when the loading engaging member 55 is being used to handle loads. When the boom 17 O is moved into such position, the hook 180 may engage across pin 40. The auxiliary boom 170 may be detached by removing the hook 55 from the opening-179 and removing either of the pins, 172, 175, the latter being preferably held position by cotter pins and the former bein-gfheld in position by nuts 182. When the auxiliaryboom 170 is removed or positioned in its inoperative position, the main boom 40 and the 'load engagingmember 55 are capable of being operated in the-usual manner to raise and lower loads to and from varying positions at either side of the truck frame 1. When the auxiliary boom 170 is assembled as shown in Fig. 1, the crane may be utilized-to perform various load handling operations, for example, in making machineassemblies. The aux. iliary boom 17 O may be operated to lift a part,

unit or 'elementand support it vvhile being M moved to theplaceof assembly and there held in position while assembly iseffected. By .7 reason. of the-fact that the hoist mechanism is utilized to support the-outer end of the auxilbeing assembled. Furthermore by swinging the main boom 40 up ordown, adjustment of the load in an endwise direction can also be made. As theboom 170 extends laterally in a substantially horizontaldirection, it can be used to support and position parts, units and elements below or. underneath a frame or structural part. I

.183 indicatesan extension member adapted to be removablysupported on the free end of the main boom 4.0 and support parts, units andfelements-for assembly purposes in or at relatively high elevations or to lift them to such position; or to engage the same for disassembly or lowering. indicatesa hook swlveled on a suitable device which in turn is suspended by a link from the free. end of" V the extension member. When these parts, units and elements are engaged, they may be lifted to and from positions beyond the range of theload engaging member 55. In such Y operations the load is raisedto an interme diate position by the member55; then the i boom, and truck frame"aremanipulated to (1) engage the hook 185 withthe load and "(2) then'lift the loadto the elevated position desired. In making disa's'semblies from posi tions beyond therange of the load engaging member55, the extension member, boom and truck frame are manlpulated in the reverse directions; The extension member 188 preferably comprises a tubular bar adapted to ex'-, 7

tend through an opening 18formedin the.

upper plate 40 and'removably fit a socket 185% rigidlysupported between the boom, bars 40 near" their free ends, being held therein by a'pin183 The socket comprises i a U-shaped plate'185 connected at itsends I to a cross member 185 which is 'securedto I the bars 4O as shown-in Fig. 5. Theexten sion member 183; extends endwise from the main'boom 40 and carries at its outer end the depending hook or other device 185 by means of which it-may engage and support a load.

When removed from thesocket 185?, the ex-' tension member 183 may be removably se cured to the boom 40, preferably by means of a socket 186 into which its inner end-fits and a clampingblock 187 carried by one of the bars 40, the block 187 being provided ieo I with a hinged plate 187 a which engages the extension member to hold it on the block 187.. The plate 187 is secured inclamping position by a suitable device 187". As the extension member 183 is rigidly carried by the'boom 40 and extends from'the free end thereof, operation of the boom 40 will swing -the outer end of the extensionmember to move its suspension hook 185 or the load carried thereby as desired.

, From the foregoing description it will be seen that I have provided a crane which is capable of effecting lifting and lowering operations at relatively great heights and under varying conditions by the provision of an extension member'which can be assembled in position in a ready manner for engaging the loads to belifted to or from such positions and thatsuch member can be removed at Will to facilitate the operation of the boom and also movement of the crane into and out ofstructures or below overhanging Walls in a ready manner. p

To those skilled in the art to which my invention relates many alterations in construction and widely differing embodiments and applications of the invention will suggest themselves without departing from the spirit" and scope thereof. The disclosures and the description herein are purely illustrative and are not intended to be in any sense limiting.

What I claim is:

combination of a wheel supported frame, a

' boom swingably supported on the frame, a hoist mechanism having a load engaging 1 member suspended from the free end of said boom, means for swinging said boomup- Wardly and downwardly, an extension member removably mounted on and extending fromthe freeend of said boom, and supporting elements on said boom arranged to rem ova'bly engage said extension member when removed from its operative posltion.

. 2.,In apparatus of the class described, the

vcombination with a wheel supported frame,

- of a boom swingably mounted thereon, means for swinging said boom, a hoisting mechanism including a load engaging member suspended from said boom, an extension member detachably supportedion the free end of said boom, and separate means carried by said boom for detachably} supporting said member when detached from said boom.

5 I 1;In apparatus of the class described, the

3'. In apparatus as claimed in claim 2 in 1 which the separate supporting means for the T extension member comprise a pair of devices engaging said member at spaced points, one thereofconstituting a clamp. o0

4. In apparatus of the class described, the

I combination of a frame, power means there'- on, a boom pivoted on said frame and connected with said power means, an extension member arranged to engage a load at its outer end, means for removably supporting the

Images