US3131907A

US3131907A - Sheet rock hoist

Info

Publication number: US3131907A
Application number: US101745A
Authority: US
Inventors: William B Brown
Original assignee: Individual
Current assignee: Individual
Priority date: 1961-04-10
Filing date: 1961-04-10
Publication date: 1964-05-05
Anticipated expiration: 1981-05-05

Description

May 5, 1964 w. B. BROWN SHEET ROCK HOIST Filed April 10, 1961 0 KW mr m .W m N 5 4 H m 0 .a M 5 m Q H V. E B \i m\ mu m mm o o w F 9. b mu 9 NE as mu n United States Patent O 3,131,907 SHEET ROCK HOIST William B. Brown, Schaller, Iowa Filed Apr. 10, 1961, Ser. No. 101,745 2 Claims. (Cl. 2544) My invention relates to a sheet rock hoist.

An object of my invention is to provide a hoist which will easily raise flat sheets of sheet rock to a ceiling so that the sheet rock can then be attached thereto.

A further object of my invention is to provide an arrangement which is adjustable, to provide means for handling various sizes of sheet rock.

A further object of my invention is to provide an arrangement which requires a minimum of effort in raising the sheet rock, and to provide other advantages which will be readily apparent.

With these and other objects in view, my invention consists in the construction, arrangement, and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

FIGURE 1 is a side elevation of my device, and

FIGURE 2 is an end view of FIGURE 1.

I have used the character to indicate a pair of base members to which members are suitably pivoted at 11 the caster wheels 12, the character 13 indicating braces, and the character 14 indicating further braces.

Secured to the braces 14 are the vertically positioned spaced supports 15 to which are attached at their upper ends the transverse bracing members 16, and received within the members 16 and between the members 15 are the vertically positioned square-in-section tubes 17 which receive the male square bars or tubes 18, the bars 18 including a series of spaced openings 19, the tubes 17 including the pins 20, which pins 20 are receivable within any of the openings 19 to provide vertical adjustability.

Securely attached to the bottom of the tubular members 17 are the straps 21 which are adapted to straddle the members 15 to thereby provide a guide for the members 17.

The character 22 indicates further square-in-section hollow tubes which receive the male square-in-section further members 23 having the openings 24, the members 22 including further pins 25 adapted to be received in any of the openings 24 to provide adjustment between the frameworks.

The

upper members

22 and 23 are suitably secured as at 26 to certain of the members 15. Attached at the upper ends of the members 18 are the vertically positioned substantially lengthended members 27, and attached to the

lower members

23 and 22 are the

shafts

28 and 29, the shaft 28 passing through a journalling member 30 which is attached to one of the members 15, and attached to the shaft 28 is a toothed gear member 31 which engages a latch 32 pivoted at 33, and also attached to the shaft 28 is a reel 34 and an operating handle 35.

Receiving the shaft 29 is a further journalling member 36 which is secured to one of the members 15, and attached to the shaft 29 is a further reel 37.

The character 38 indicates substantially U-shaped members attached to certain of the members 16, and journalled in the members 38 are the pulleys 39. Passing over the pulleys 39 are the

cables

40 and 41, one end of the cable 40 being attached at 42 to one of the members 21, the other end of the cable 40 being attached to the reel 37, and with one end of the cable 41 being attached to the reel 34, and the other end being attached similarly to one of the other members 21 on the other framework.

The hoist is operated in the following manner. The slab or piece of sheet rock which is indicated by the character 43 is first placed on the members 27, and next, the handle 35 is rotated, whereby both reels 34 and 37 will simultaneously operate the

cables

40 and 41 to thereby lift the members 17 upwardly until the sheet rock is against the ceiling. Next, the catch 32 is placed in its locking position as shown, which will maintain the sheet rock 43 in its upper position, whereupon the Workman can then conveniently nail the sheet rock to the ceiling, this arrangement thereby providing means whereby the sheet rock can be very conveniently handled without requiring the holding by several workmen and the like. The arrangement can then be lowered by merely releasing the catch.

It will be noted that the

telescoping members

22 and 23 permit means whereby the supporting units can be moved apart to any distance desired to thereby accommodate longer or shorter pieces of sheet rock. The casters permit positioning wherever desired, and it will also be noted that the members 18 can be raised to any desired elevation by means of the pins 20 and openings 19 to thereby provide means whereby very high ceilings can be accommodated.

It will also be noted that the

members

22, 23 provide means for maintaining rigidity to the structures.

It will now be seen that I have provided the advantages mentioned in the objects of my invention with further advantages being apparent.

Some changes may be made in the construction and arrangement of the parts of my invention without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims any modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

I claim as my invention:

1. A sheet rock hoist comprising a pair of spaced frameworks, said frameworks each including upwardly movable posts, means for moving said posts upwardly including a rotatable shaft journalled on said frameworks, means for rotating said rotatable shaft, a pair of reels attached to said rotatable shaft, cables attached to said reels, pulleys attached to said frameworks over which said cables pass, each of said cables being attached at one end to the bottom of said posts, means for providing adjustable spacing of said frameworks including an upper telescoping member, means for adjustably securing said telescoping member, said shaft including further telescoping members, means for adjustably securing said further telescoping members, said frameworks including base portions, casters journalled benath said base portions, said frameworks including vertically positioned supports, said posts being slidable between said supports, guide straps attached to said posts straddling said supports.

2. A sheet rock hoist comprising a pair of spaced frameworks, said frameworks each including upwardly movable posts, means for moving said posts upwardly including a rotatable shaft journalled on said frameworks, means for rotating said rotatable shaft, a pair of reels attached to said rotatable shaft, cables attached to said reels, pulleys attached to said frameworks over which said cables pass, each of said cables being attached at one end to the bottom of said posts, means for providing adjustable spacing of said frameworks including an upper telescoping member, means for adjustably securing said telescoping member, said shaft including further telescoping members, means for adjustably securing saidlfurther telescopingumembers, said frameworks includingha e p rti n ter riournalledbene h( ai base guide straps attached to said posts straddling said supports, laterallypositioned substantially lengthened sheet Bock slippo r'tsat'tachedi at" the upper end of said posts, neof said reels including a toothed gear attached thereto, a'latch memberefor securing said gear in selected positi n, postsvincluding still further telescoping portions providing vertical adjustableina eans.

UNITED STATES PATENTS King July 3, 1894 Pfifiner Aug. 23, 1927 Goodsman July 16, 1935 Henderson Feb. 19, 1952 Ward June 26, 1956 Levitin i Sept. 10, 1957