US2610744A - Portable floor hoist - Google Patents

Description

Sept. 16, 1952 R. R. DAGUE PORTABLE FLOOR HOIS'I Filed April 6. 1948 2 Sl-lEETSSl-IEET 1 Q m vw g Ralph R. Hague w t .QQx

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R. R. DAGUE PORTABLE FLOOR HOIST Sept. 16, 1952 2 Sl-lEETS SHEET 2 Filed April 6, 1948 Ralph R. Daguc mmvron Patented Sept. 16, 1952 UNITED STATES PATENT, OFFICE .t 1 2,610,744 7 6 PORTABLE 1 I Ralph lt,Dague,Tuscola,-Ill. Application April 6, 1948, Serial No. 19,235

The primaryobject of thisinvention is to enable a mechanic totperform lifting operations, such as, the removing ofa transmission from an automobile, in a minimum of time-with'a slight expenditure of physical exertion.

Other objects-of this invention are to provide an improved portable crane that is. sturdily and durably constructed, to provide an inexpensive crane and'to provide a light weight'hoist that is employable for heavy duty work,

A meritorious feature of this in the provision of an adjustable boomthat is carried by a mast mounted on a wheeled base, means being provided for selectively moving the boom on avertical and horizontal axis.

Another important feature ,ofthis invention resides in the provision ofconvenient means for adjusting, the angular' positions of the boom to raise or lower the cable or hoist end of the boom relative to the work; a, i

Another important feature of this invention resides inthe provision of "means manually operated for actuating a winding drum to wind the nvention resides bars foraxial movement defining a steering ase winding cable, the means beingso' constructed. 6

and designed that a slight amount of force applied is suflicierit to lift exceptionally heavy articles.

These and ancillary objects and other meritorious features, to become more apparent upon a perusal of the following descriptin,,in viewof the accompanying drawings, are attained by this invention as shown by way of example in the drawings, wherein: Figure 1 is a side elevational view of thisinvention;

Figure 2i's a rear view in elevation; Figure 3 is a top plan view-thereof Figure 4 is a vertical sectional view taken substantially on the line 44 of Figure 3, and

Figure-5 isa cross sectional view taken on the .plane of line 55 of Figure 4.

Referring now moreparticularly to the drawings wherein similar characters of reference designate corresponding parts throughout, the numeral [0 generallydesignates an improved crane, constructed, by way of example, in accordance with the principles of this invention. The crane comprises a suitable base 12, which includes a pair of channel bars or supporting bars [4 and I6, transversely joined by a support plate It, which is welded adjacent one end of 3 Claims. (Cl. 212- 57) the base. 'Theopposite ends of the bars diverge outwardly, terminating in parallel ends, which have suitably secured thereto, wheelsupporting plates 22 and 24. The plates 22 are attached parallel tothe'end of the supporting bar |4 and are similarly'apertured to receive anaxle 26 for.

a conventional wheel 28. In similar fashion, plates 24! are attached, as by bolt assemblies 30 or welding, to the end of the supporting bar I6 and are fashioned to accommodate a wheel 32,

A forward support 34 supports a pair of parallel wheels 36 and .36, the support 34 being secured between the forward portion of the supporting sembly. *The support 34 is secured to the forward junction platell by. a pin 40 and has an extending hinged plate 42, which terminates in loop bifurcations for accommodating a handle 44, which is'attached theretor Vertically extending from the support plate [6 is a vertical support tube or mast 46 having a series of transverseboom adjusting apertures 48 provided therein adjacent the top. A boom 50 is mounteed' on the mast by means of a split collar 52. Therboom 50$ is swivelly secured within "a pair of integrally extending apertured cars 56 by. means of a transverse pin 54. The collar-52 is disposed at one endof a concentrically disposed elongated longitudinally slit' sleeve. 58, which is slidably received on the mast, and has a pair of'extending aperturedfears 60 and 62." A securing 'bolt' 64 is connected to the cars 60 and 62 and has a handle rod 66inserted in the'head portion for loosening and tightening the bolt.

Disposed on the opposite end of the outer tube or sleeve 58 1s a collar 68 having a pair of extending apertured ears Ill, parallel to the ears 56. A-U-shaped bracket 12 is swiveled at its open end to the ears by means of a pivot pin 14, providing a support for an adjusting mechanism or turn-buckle device for adjusting the angular positions ofthe boom. A rod 16, having a peened or bearing end 18 received in the bracket '12, is suitably exteriorly threaded, as at 88, for attachment to' a supporting member 82 which, is swivelly attached to the boom by a swivel pin 84. A wheel 86 is provided on the rod 16 for imparting rotation thereto to advanceor remove the threaded end from the supporting member 82 so as to raise or lower the extending end of the boom. I t. I

Thus, it can be seen that the boom 50 may be moved in a horizontal plane by rotating the supporting sleeve 58 and it may be moved vertically by sliding the sleeve on the mast. 0f

course, a suitable pin or bolt may be inserted in one of the apertures 48 to seat the collar 52 and position the boom. In such position, the boom is swingably disposed by loosening the sleeve 52. Yet, the outer end of the boom may be adjusted through rotation of the rod 16. Thus, the boom is vertically, horizontally and angularly adjustable to handle various loads and for sundry uses.

A sheave 90 is journaled at the outer end of the boom in an opening. 92 therein. A guide sheave 94 is mounted in an upright placement adjacent the swiveled end of the boom by means of an attaching bracket 96. A pulley 98 is journaled in a cut out portion adjacent the'top'of the mast. A spacing pulley I extends from the sleeve 58. A hoisting cable I02 is trained'over the pulleys and sheaves and has a terminatinghook I04.

Of course, if found necessary, support standards I06 and I08 may be employed to rigidify or brace the mast in a verticalposition. Thestandardsmay be bolted, asat, I'IO, toxthebase plate 2 I' and secured by. boltzassemblies. or. the like II 2 to. the. top of the mast.

Suitable means is. provided for-actuatingthe cable I02 and for raising. and loweringthe hook I 04 for. attachment to the "work or article; For this" purpose, :angle brackets. H4 and I I6 are mounted on thesupport; plate I8. A shaft. I'I-'8'is joumaled to the bracketsiand supports, a hoisting drum I; around whichthe. cable isiwound'and the end thereof secured. Secured on the drum shaft H8 is a sprocket .wheel I22 over which is trained a'chain I24. Thechain I24 drivingly connects the'drum shaft: 1 I8 withza driving shaft I28, journaled below to the'brackets' I I4: and I I5, by means of a smaller sprocket. wheel I30 secured on the driving shaft. I

The driving shaft I28 extends beyond :'the bracket IIG into a gear box I32 supported on the base plate I8. A pinion gear I34 is secured to the extended end' of the shaft in meshing engagement with a spur gear I36, which .extends from a. pulley I'38..A complementary hand pulley I40 is rotatably supported by'a supporting or channel bar. I42, having one end anchored to the base plate; A belt I44 is: connected to the pulleys and transmits manual power applied to the pulley I40, through the medium of an extending handle I46", tothe. winding drum I20. u

If desired, suitablemeans may be provided to brake. the winding drum. The means preferred .comprisesa brake .drumJSO secured onthe drum shaft II8. A brake shoe I52 is'received around the circumferential periphery of the drum and is actuated by a pivoted handlever I54. The lever I54 is pivoted, as atI56, to anextending ear I58 of the support bar I42 and. has pivotal links I60. The pivotal links Hi0 are adapted vto move the. split brake shoe. I 52 into gripping placement on the. drum. Of course, means may be provided for locking the lever in the desired position and could comprise a catch or stop mechanism carried by the support bar I42. Also, suitable means may be provided for tightening the belt I44 and may comprise any conventional means found expedient.

Thus, it can be seen that there is provided a simple and reliable hoist that is equipped with an adjustable boom and with convenient means for winding an article gripping cable so that heavy weight jobs may be performed without fear of injury to an operator.

Since many other modifications and purposes of this invention will become apparent to those skilled in the art, upon a perusal of the foregoing disclosure, in view of the accompanying drawlngs, it is to be understood that certain changes in size, style and arrangement of parts may be efiected thereon, without a departure from the spirit of the invention and within the scope of the appended claims.

Having described the inventiomwhat is claimed as new is:

1. In a portable floor hoist having a base and an upright secured thereto, an elongated longitudinally slit sleeve slidably engaged on said upright, means for clampingly positioning said sleeve at, a preselected position on said upright, a boom pivotally connected to said first named ,means, and second means on said sleeve and connected to said boom for adjustably supporting the outer end thereof.

2. In a portable floor hoist having a base and an upright secured thereto, an elongated longitudinally slit sleeve slidably engaged on said upright, means for clampingly positioning said sleeve at a preselected position on said upright, a. boom pivotally connected to said first namedmeans, and second. means on said sleeve and connected to said. boom for adiustably supporting the outer end. thereof, said first named means including a split collar clampingly engaga ableon said sleeve and having apair ol'. ears to which the boom is pivotally secured.

3. In .a:portablelfloor hoist having a. base. and an upright secured thereto, an elongated longitudinally slit sleeve slldably'engaged on saldzupright, means for clampingly positioning. said sleeveatapresel'ected position on said upright, a boom pivotally connected to. said first named means, and second means. on said sleeveand connected to said boom foradjnstably supporting the outer end thereof, said first'namedjmeans including a split collar clampinglyc'engageable on' said sleeve and havingapair of cars to which the boom is pivotally secured, saidsecondmeans'including a second split collar clam'pingly .engngeable on said'sleeve and having. a. pair of'ears for' pivotally supporting. a strut, an. adjustable strut pivotally connected to said last recited pair of ears and having itsouter end pivotally connected to anouter' portion of said boom.

RALPH R. DAGUE;

REFERENCES. CITED UNITED STATES PA'I'ENTS Number Name Date 132,442 Clarke Oct. 22, 1872 180,223 Grinnell July 25, 1876 665,757 Rynearson Jan- 8, 1901 849,106 Castagnos Apr. 2, 1907 859,146 Stewart July 2, 1907 1,400,540 Gloor Dec. 20, 1921 1,428,314 Barnes Sept. 5, 1922 1,448,814 Norris Mar. 20, 1923 1,529,939 Whittemore et al. Mar. 17', 1925 1,720,714 Bergesen July 16, 1929 1,887,965 Stoner s Nov. 15, 1932 1,978,999 Jones Oct. 30, 1934 2,301,555 Mantyla Nov. 10, 1942 2,387 568 Drott et al Oct. 23, 1945 2,419,813 Berchtold Apr. 29, 1947 2,496,401 McKinney Feb. 7, 1-950

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