US3181707A

US3181707A - Hoisting apparatus

Info

Publication number: US3181707A
Application number: US301286A
Authority: US
Inventors: Robert V Janssen
Original assignee: Individual
Current assignee: Individual
Priority date: 1963-08-12
Filing date: 1963-08-12
Publication date: 1965-05-04
Anticipated expiration: 1982-05-04

Description

May 4, 1965 R. v. JANSSEN HOISTING APPARATUS Filed Aug. 12, 1963 'HOISTING APPARATUS Robert V. Jaussen,'1215 N. Everett St., Glendale, Calif. Filed Aug. 12, 1963, Ser. No. 301,286 2 Claims. (Cl. 212-8) This invention relates to hoists and particularly to a portable hoist which is especially useful in installing and removing heavy domestic appliances.

Many domestic appliances, among them, water heaters, water softeners, and air conditioners, are installed on shelves or brackets above the floor level and, in the case of some air conditioners, in window or other wall openings which are well above the floor level. Often they are too heavy for one man to lift them into place and other than that requirement, one man can perform all of the installation work. With these considerations in mind, it is the principal object of the invention to provide a simple, readily portable hoist which can be placed on a floor at a point adjacent to a shelf for equivalence supporting surface disposed above the floor level and which can transport the load to or from said supporting surface and the adjacent floor surface so that the need for second man can be dispensed with.

Another object of the above invention is to provide a hoist of the above character having a floor engaging base and other means engaging the supporting surface, e.g., a shelf or window opening, which is vertically adjustable relative to the base to accommodate the different elevations between the floor and the supporting surface.

A further object of the invention is to provide a hoist of the above character which includes a crane arm vertically adjustable relative to the suppotring base and which is also swin'gable about vertical axis in I all extents of vertical adjustment.

With the foregoing objects in view, together with such I additional objects and advantages as may subsequently appear, the invention resides inthe parts, and in the construction, combination and arrangement of parts described, by way of example, in the following specification of a presently preferred embodimentof the invention, reference being had to the accompanying drawings which form a part of said specification and in which drawings:

FIG. 1 is a perspective side elevational view of a hoist winch means. Referring to the drawings, the base structure of the illustrated embodiment comprises a hollow, square base "1 formed of a series of angle irons welded together having the horizontal leg thereof disposed to rest on a floor or the like. Welded or otherwise secured in one corner of said--base is a vertical supporting column comprising a heavy tube 2, said tube at its other end having a series of transverse pairs of aligned holes extending diametrically therethrough at spaced vertical distances for selective reception of a cross bolt 4 therethrough; said bolt having a head at one end and a nut threaded on the other end thereof. Freely rotatably mounted on the exterior of the upper end of the tube 2 is the lower end of the crane arm tube 6 resting on the body of the bolt 4 between the head thereof and the tube 2 at one side and between the nut 5 and the tube 2 at the opposite side, the upper end of said tube 6 having an integrally formed, laterally extending crane arm 7 terminating in a bracket means-,8 which carries a cable guiding sheave 9 having at least the upper portion of the cable receiving groove thereof disposed above the plane of the upper surface of the crane arm United States Patent 0 w Ce 3,181,787 Patented May 4, 1965 '7 and having the outermost portion of said sheave disposed beyond the distal end of the crane arm. The juncture of the tube 6 andcrane arm 7 is similarly provided with a'bracket means 10 in which a second cable guiding sheave 11 is mounted for rotation said sheave also being so positioned that a cable trained thereover will be spaced from the side of th tube 6 and above the crane arm 7. Adjacent its lower end, and directly below the sheave 11 the tube carries a manually operable winch 12 including a rotatable drum 13, and operating crank 14; said crank actuating the drum 13 through a reduction gear means comprising a driven gear 15 fixed to the drum and a pinion 15a fixed to a shaft 14a to which the crank 14 also is fixed and a manually operable pawl 16 engageable and disengageable with the teeth of the pinion 1511. This winch mechanism constitutes an item which is purchasable on the open market. A cable 17 has one end thereof attached to and wound upon the drum. The other end of said cable is trained over the sheaves 11 and 9 and terminates in suitable means for attaching said end to a load, here shown as two metal bars M secured by nuts to the hot and cold water pipes P and P of a water heater W which is to be installed on or removed from a shelf surface S Below the lower end of the tube 6 the tube 2 carries a vertically and rotatably adjustable collar 18 securable in adjusted position thereon by a clamp screw 19 operable by a T-handle 24). The collar 18 includes a laterally extending arm 21 adapted to rest on the shelf or other surface from or to which a load is to be lifted.

In use, the base 1 is placed so as to bring the tube 2 as close as possible to the shelf or other surface to or from which the weight is to be lifted with the corner of the base to which the tube is secured disposed away from the are in which the crane arm is to swing. The crane arm assembly comprising'the tube 6 and parts carried thereby is suitably vertically adjusted and the collar 18 is adjusted to position the arm 21 down against the surface S and the collar is then tightened by the screw 19. If the weight is to be lifted from the surface S, the crane arm is swung over the surface, the cable attached to the load and the winch operated to lift the load. The arm 21 serves to support the load which is then offset from the base 1. The crane arm assembly is then rotated about the tube 2 to a position over or near the base 1 and the load is lowered to the floor. In lifting a load to the surface S. the reverse of the foregoing procedure is, of course, followed.

It will be understood that the term surface S would include any elevated surface Whether a cabinet, shelf or table top to support a heavy load such as a water heater or water softener. Equally, the term is intended to in clude such supporting means as a window or wall opening in which an air conditioner is to be installed or removed.

The hoist is of lightweight and therefore can be readily taken on the same service vehicle that carries the appliance and it can be readily taken therefrom to the point of use. It provides a means whereby heavy loads ordinarily requiring more than one man to lift into or out of position can be conveniently handled by one man thereby increasing the efilciency of installing and removing such heavy appliances.

The recitation of certain particular uses of the invention is not to be deemed to be by way of limitation, since the hoist is, of course, useful for any purpose for which it is found to be suitable. Accordingly, the invention will be deemed not to be limited to the precise details of structure and use above set forth by way of example and to include as well, all such changes and modifications in the parts, and in the construction, combination and arrangement of parts as shall come within the purview of the appended claims.

' lclaim': f V f v 1. In a hoisting:appaiaftus,"a base adaptedtorestgdirecb ly ona floor; aoylindriealcohinir'i mounted on andris'ing I from said baseg; an edge thereoffahoisting unit momited on the upper-end of said col lfi'n fiifor"f ee rotatign there v on,'adjustable-meansfor defermimn the'yertidal position i V provi'din g 'suppoxt;

for said hoisting apparatiuswlien aidlhoisting' 'ap'paratus carrying-aload disposed outside a ertical plane definin the perimet'erof said base -.by engfagerrient of said support' providing means with a surface other-than the floor, said Y 7 support providing means feomprisin'g nfri'gid-a'rni' project of said unit on saidcolumn, and mean ing' laterally from saidgcolfimn with capac'ity'for Inoyernent rotatively abolit-i and-longitudinally ofrsaid column; and d j manually operable clamp means for'releasibl-y seeming said;ar m onsziidfcolumn in any desired rotat ive positionfi ,abonfl'said qolnmn and at any desi'red elevation thereon aboY? Said Ease.) i i 2. Ahoistin'gappiratns *a's 'el'imed in claim 1 in which Said hoisting nnit comprises 'a' yertieally'extending;"them ithe'uppeijendof; said ,eoliimnisiqeeeivedjzi later hl lyeitendingicrane arn i' projecting fioni the upper rend ofijsaid member gmd" teri 1 minaiing in El f reee'nd, a fifst' sheai/e dis nosed iadjacen t .the juncture of saidkcr ane argn and said mfe'mbenfa second I slie'ai e disposed atsthe free end of-said,cranearm;a wineh means carriedhy said mernbeijand disposedbelow said first sheave, and aqeable tx gined over sid shea'VesFand having one end openntively-"eonneetedv to. sgidkyinch means and theotherjendvdisposed below sa id-s'eeqnd sheave for V connectionQtoi'aload to-be liftedgbyj'winding said cable onsaid wineh nieans I i J 1.

V References?gitedib e him .6

i T F' YSTATES PATE r ru n ar y: Examiner.

Claims

1. IN A HOISTING APPARATUS, A BASE ADAPTED TO REST DIRECTLY ON A FLOOR, A CYLINDRICAL COLUMN MOUNTED ON SAID RISING FROM SAID BASE AT AN EDGE THEREOF, A HOISTING UNIT MOUNTED ON THE UPPER END OF SAID COLUMN FOR FREE ROTATION THEREON, ADJUSTABLE MEANS FOR DETERMINING THE VERTICAL POSITION OF SAID UNIT ON SAID COLUMN, AND MEANS PROVIDING SUPPORT FOR SAID HOISTING APPARATUS WHEN SAID HOISTING APPARATUS IS CARRYING A LOAD DISPOSED OUTSIDE A VERTICAL PLANE DEFINING THE PERIMETER OF SAID BASE BY ENGAGEMENT OF SAID SUPPORT PROVIDING MEANS WITH A SURFACE OTHER THAN THE FLOOR, SAID SUPPORT PROVIDING MEANS COMPRISING A RIGID ARM PROJECTING LATERALLY FROM SAID COLUMN WITH CAPACITY FOR MOVEMENT ROTATIVELY ABOUT AND LONGITUDINALLY OF SAID COLUMN, AND A MANUALLY OPERABLE CLAMP MEANS FOR RELEASABLY SECURING SAID ARM ON SAID COLUMN IN ANY DESIRED ROTATIVE POSITION