US1416958A - Portable crane - Google Patents

Description

E. H. KELLEY AND G. A. STEWART, JR-

PORTABLE CRANE. APPLICATION FILED FEB. 5|192ln Patented May 23, 1922.

4 SHEETS-SHEET I.

4 TTOR/VEVS E. H. KELLEY AND G. A. STEWART, JR. PORTABLE CRANE.

APPLICATION FILED FEB. 5,1921. 1A1 .9m. I Patented y 23,1922.

4 SHEETS-SHEET 2.

E12. Kelley; BY

ATTORNEYS E. H. KELLEY AND G. A. STEWART, JR.

PORTABLE CRANE.-

APPLICATION FILED FEB, 5. 1921.

1 6 9 5 8 a Patented May 23, 1922.

4 SHEETS-SHEET 3.

11 TTOR/VEYS E. H. KELLEY AND G. A. STEWART, 1R.

PORTABLE CRANE.

APPLICATION FILED FEB) 5, 1921.

fig 9 5 Patented. May 23, 1922.

4 SHEETS-SHEET 4.

, INVEfl/TOI? WITNESSES fl Stewart Arm/Mrs proved crane'inuse,

EMMOR H. KELLEY AND GEORGE A; $TEWART, JR, 0?? SOUTH IBRGWNSVILLE, FENN- SYLVANIA.

PORTABLE C BANE.

release.

Specification of Letters Patent.

Patented May 23, T922.

Application filed February 5, 1921. seriai no, Masai;

To all whom it mag concern Be it known that WB,-EM'MOR ll; Keener and Gnoncn A. STEWART, Jr, both citizens of the United ldtates,- and residentsof South Brownsville, in the; county-of Fayette and vState of Pennsylvania,have invented certain new and. useful Improvements in Portable Cranes, of which the following is a specifi cation.

This invention relates to cranes'ot-the portable type. T

An important object of this invention is the provision of a portable craneespecially adapted for use in removing the wheels of vehicle trucks in sucha manner that the bearings of the wheels will not be damaged in any way.

A further object of the invention is to provide a portable crane especially adapted for removing vehicle wheels from trucks and provided. with means-whereby the same may be adjusted for use in connection with wheels of various sizes.

The invention forming thesubject matter of i this application Iaims also to! provide a portable crane-l which? may be easilydopei ated by one man,{ thereby dispensing with the necessity of employing an attendant in applying and removing the heavy wheels oi a vehicle truck.

Other objects and advantagesmef the in ventionwill be apparent. during the course of the following descniption.

In the accompanying drawings forming a .part ofthis application, and iiinvhicli like numerals are employed to" designate like parts throughout thesame,

Figure l is a si-deelevation ofl the im- Figure2 is a rear -elevationoi the same,

- in use,

t Figure 3 is a front end elevation "ofthe crane in use, I

"Figure lisa fragmentary-plan view of the crane, I

Figure 5 is adetailsectional view through the lifting ban of the crane,

Figure" 6 is a fragmentary u perspective view-of the standard of thecrane,

Figure 7 is a detail sectional "viewthrough the standard of the cram-3, the 'view illustratlng the anti-friction elements 3 with which thellifting barnis engaged,

base is provided with a pair of; brackets 1.8

to which casters 19 are connected. The casters 19 may be held in an adjusted or set position by means of pins 20 vwhich may be inserted through registering openings 21 in the shanks of the casters and in the brackets 1,8. When the -pins20 are inserted. through the registering openingsQl the castersare so positioned that the crane when moved will travel in a straight line; Of course \vhen it is desired to turn the craneior changing its direction of travel thepins 720 are removedgso that the attaching portions of the casters may rotate within the brackets. The legs-16 have their rear, portions connected by a pair of spaced; parallel transversely extendingI angle bars to which a standard generally designated by thenumeral-QS is connectech by meansot rivets 26. As illustrated in Figures 1 and l,

the standard 25 includes four spaced parallel upstanding beams 27 which arel -shaped in cross section. The beams 27 are; arranged in. pairs,and the pairs of'beamsare connected at their upper portions byla plate 28 and at their intermediate portionsby a plate 29 arranged-0n the opposite sides of the beams.

Rivets or other suitable fastening devices its connection with the base by means of in-= clined brace straps '35, which are secured to the intermediate portion of the standard and to theend portions of the angle (plates 23.

The transversely extending-angle bars 23 l are connected'bya pair of anglegbars36 which constitute a base for a jack designated by the numeral 37, which jack is adapted for elevating a lifting bar generally designated by the numeral 38.

The lifting bar as illustrated in Figure at, includes a pair of channel plates 39 having outwardly directed parallel flanges 90, with which the upper and lower rollers 32 and 33 contact so as to provide a sliding connection between the standard and the lifting bar. l/Vith reference to Figure '7, it will be observed that the axis of the lower roller is arranged in a vertical plane in advance of the axis of the roller 32 so as to contact with the'forward flanges of the channel plates while the rollers 32 contact with the rear flanges of the channel plates 39. in this manner, the pull exerted on the horizontal' lifting arm 91 is prevented from causing the lifting bar to bind on the standard when an effort is made to elevate the same.

As illustrated in Figures 5 and 6 the channel plates 39 are arranged in spaced parallel relation and have angle bars l2 connected to their. opposed sides by means of rivets or the like, and the angle bars are in turn joined by spaced plates d3. The lower ends of one pair of angle bars 42 terminate at the intermediate portions of the lifting bar 38 so as to define an opening within which the jack is received. The head of the jack contacts with a pair of transversely extending angle bars l4, which may be riveted to the opposed sides of the channel plates at the upper end of the opening in the lifting bar.

As illustrated in Figure 5, the angle bars 42 at the forward side of the lifting ba are bent intermediate their ends, and are joined with the intermediate portion of the lifting arm 91 so as to constitute a. brace 46 for the same.

The lifting arm 91 includes a pair of spaced angle bars to which a chain supporting plate 50 is connected. A lifting chain 51 which is adapted to be passed about the rim of a. tire, is connected to the plate 50 and is adjustably connected to a second plate 52 by means of a slot 53 which is adapted to selectively receive one of the links of the chain. The adjacent link of the chain'contacts with the upper face of the plate 52 and therefore prevents the disconnection of the chain with the plate 52. The plate 52 is slidable on the horizontal arm 91, and is provided with an adjusting bolt M which is passed between the angle rods of the arm and 'is provided with a nut 55 by means of which the bolt 54c may be securely engaged with the rod for holding the same in an adjusted position.

In the operation of the improved crane, the same is moved up to one side of a rehicle wheel so that the lifting arm 91 will overhang the vehicle w heel as illustrated in Figure l. The chain 51 is now passed beneath the rim of the wheel and is adjustably connected to the plate 52. The lifting bar 38 is now elevated by means of the jack so that the wheel may he \i'ithilrawn time the axle. Ordinarily it requires several men to remove the wheels of a vehicle truck as such wheels weigh approximarely 15W pounds. lVith the use of this invention one man may remove the wheel without the pos sibility of in any way damaging the bear: ings or associated elements. When the wheel is withdrawn the crane may be moved to any suitable place and when it is desir d to again attach the wheel the crane is rcturnwl to its original position so that the wheel may slip onto the axle.

Having thus fully described the invcn tion, what is claimed is:

1. A portable crane comprising a l1=,.l(l ard, a lifting member slidably ca Iictl there by and inclusive of a pair of spaced side bars, said lifting member being pro idcil with a pair of angle bars connected to sa d side bars and having inwardly directed flanges constituting a contact element for the head of a jack.

2. A portable crane comprising a. standard, a lifting member slidably associated therewith and consisting of a pair of side members and means connecting the side members, said lifting member being provided with angle bars having inwardly di rected flanges constituting a contact element for the head of a jack, one side of said lifting member being open for the reception of a jack, and a. base movably supporting said standard.

3. A portable crane comprising a standard, a lifting member slidably associated therewith and consisting of a pair of side members and means connecting the side members, said lifting member being provided with angle bars having inwardly lirected flanges constituting a contact element for the head of a jack, one side of said. lifting member being open for the reception of a jack, and a base movably supporting said standard, said lifting member being provided with a laterally projecting lifting arm having means for engaging an article to be elevated.

4. A portable crane comprising a mobile base, a standard carried thereby and inclusive of inwardly extending flanges constitutincr guides, a lifting member having channel plates provided with outwardly extending flanges slidably contacting with said first named flanges, a lifting arm conneclnd to said lifting member, and attaching means carried by said arm.

5. A portable crane comprising a mobile base, a standard carried thereby and inclusive of inwardly extending flanges constifill tilting guides, a lifting member having channel plates provided with outwardly extending flanges slidably contacting with said first named flanges. a lifting arm connected to said lifting member, attaching means carried by said arm, anti-friction elements carried by said standard and contacting with the outwardly directed flanges of said lifting member.

6. A portable crane comprising a base, a standard carried thereby and provided with beams having inwardly extending flanges, a lifting member inclusive of channel plates having outwardly directed flanges contacting with said first named flanges, pairs of upper and lower rollers carried by said standard and contacting with said second named flanges, and an arm connected to said lifting member.

7. A crane comprising a base, a standard carried thereby, and inclusive of upstanding beamshaving inwardly extending flanges,

a lifting member inclusive of channel plates having outwardly directed flanges, upper rollers carried by said standard and contacting with the flanges of said lifting member, a second set of rollers arranged beneath said first named rollers, and engaged with the flanges of said lifting member, said second named rollers being arranged in advance of the first named rollers, and a laterally projecting arm carried by said lifting member.

8. A. crane comprising a standard, a lifting member slidably carried thereby, and inclusive of a pair of angle rods having their upper portions extended outwardly to constitute braces, and an arm connected to said lifting bar and to said braces.

9. A crane comprising a standard, a lifting member slida'bly carried thereby, and inclusive of a pair of angle rods having their upper portions extended outwardly to constitute braces, an arm connected to said lifting bar and to said braces, and a flexible element carried by said arm.

10. A crane comprising a standard, a lift ing member slidably carried thereby, and inclusive of a pair of angle rods having their upper portions extended outwardly to constitute braces, an arm connected to said lifting bar and to said braces, a flexible element carried by said arm, and an elevating device for said lifting member.

EMMOR H. KELLEY. GEORGE A. STEWART, JR.

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