US2472887A

US2472887A - Plasterboard hoist

Info

Publication number: US2472887A
Application number: US683075A
Authority: US
Inventors: Core Aaron Franklin
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-07-12
Filing date: 1946-07-12
Publication date: 1949-06-14
Anticipated expiration: 1966-06-14

Description

June 14, 1949. A. F. CORE 1 2,472,887

v.PLQTEMaOARD HoIsT Filed July 12, 1946 2 sheets-sheet 1 e' @wfg/MM@ ATTORNEYS June 14, 1949. A. F. coRE 2,472,887

. PLASTERBOARD HOIST Filed Ju1y12, 194s z sheets-sheet 2 fly. 3.

ZM F 4'. 54 24 Z6 zz 3@ 32 4425 ATTD R N EYE Patented June 14, 1949 Unirse stares ZXfeATsNT OFFICE 2,472,887 rLAs'rnnnoaRD Hois'r Aaron Franklin Core; Sacramento, Calif.

Application July l2, 1946, Serial No. 683,075

l Claim. l

This invention relates to a plaster board hoist and more particularly to a device for retaining the plaster board rmly and evenly against the ceiling.

An object of the invention is to provide a hoist that will quickly and eiiciently raise a sheet of plaster board upwardly for contact with the ceiling to assist a Workman in applying the plaster board to the ceiling,

Another object of the invention is to provide a device that is simple to operate, durable, and can be inexpensively manufactured.

With the above and other objects in view, the invention consists of the novel details of construction, arrangement and combination of parts more fully hereinafter described in the accompanying drawings in which:

Figure 1 is an elevational view of an embodiment of the invention;

Figure 2 is a detailed perspective view of one corner of the table and drop leaf therefor;

Figure 3 is an end View of the hoist;

Figure l is a sectional view on the line le-Ii of Figure 5 and Figure 5 is a sectional view on the line 5-5 of Figure 4.

Referring more in detail to the drawing, the reference numeral l0 generally designates the hoist which comprises the base l2 which is provided with swivel casters i4 at its four lower corners.

Secured to the medial portion of the base l2 by fasteners l is the standard supporting meniber i8 having the upstanding socket 2d at its center thereof to receive the tubular standard il?.

Positioned at the top of the standard 2g and secured thereto by fasteners 2li are the parallel aligned complementary shaped plates 26 which are secured in spaced relation to each other by bolts Ml on which are mounted the tubular spacers Sii.

Mounted for rotation adjacent one end thereof, intermediate the plates 2B, is the Winch 32 having the crank handle 34 for manipulation thereof.

Secured intermediately of the plates 2S and the standard 2E and winch 32 by welding 36 is the tubular sleeve 38 in which is slidably mounted the elevator or table standard dll, and the stand-- ard il@ is parallel vertically with standard 22 and is provided at its lower end with a fastener l2 to which is coupled the cable ld of the winch 'Thus by manipulation of the winch, the standard will be raisedand lowered in vertical relation with the base l2 and standard 22.

Secured to the upper end of the standard lll by a T coupling 46 is a table or platform 48 which is provided at one end with a head drop leaf 50 which is hingedly connected at 5i to the table, and vertical brackets 54 coact with the notches S in leaf braces 58 pivotally connected at 56 to the leaf to retain the leaf in raised position as desired.

At the opposite end of the table, plates 632 are provided for mounting the roller 64 and plates 6E pivotally connected to plates 62 hinge the back leaf 68 to the table 48 and brackets 54 coact with the notches 56 in leaf braces 53 pivotally connected at 'l0 to the leaf to retain the leaf in raised position as desired.

Pivotally secured to the T-coupling 'l2 which is secured to the table 48 on the undersurface thereof is the vertically inclined rack l-S which comprises two parallel spaced and notched angle bars '16. The rack extends down in parallel relation to the standard 22 intermediate the plates 2e and an angular hand lever 'lil is pivoted at intermediate the bars i6 and plates 2t.

The lever 18 engages the bolt 82 mounted in the arcuate aligned slots 84 in the plates 26 to move the bolt out of engagement with the notched bars it when it is desired to raise and lower the table, and the bolt will automatically by gravity return to engagement with the notched bars i6 when the lever is released.

To operate the hoist, the table leaf '5o is raised, then a sheet of plaster board is positioned at the opposite side of the hoist with one end on the oor and the board resting against the roller te. Then the end of the board is raised until it is almost level with the table when leaf t3 is 'raised into position.

The winch is manipulated to raise the table until the board is in contact with the ceiling. lThe board can then be easily nailed to the ceil- No staging is required. When the nailing has been completed, the bolt 82 is released by the lever 'i8 and the Winch manipulated to lower the table.

The table can be used without using the braces, and one man can manipulate the hoist with ease.

It is believed that from the foregoing description, the operation and construction of the hoist will be apparent to those skilled in the art, and it is to be understood that changes in the minor details of construction may be resorted to provided they fall within the spirit of the invention. `and the scope of the appended claim.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

A device of the character described, comprising a base, a standard secured to the base at the center thereof, parallel plates secured to the top of said standard, a sleeve intermediate said plates, a second standard slidably mounted in said sleeve. means for mounting a table on said second standard, leaves pivotally mounted on the opposite ends of said table, means carried by said leaves and means carried by said table cooperating with said rst means to retain said leaves in raised position, a vertically inclined rack secured to the undersurface of said table, arcuate slots provided in said plates in opposed relation to each other, means carried in said slots and engageable with said rack to retain said table in elevated position above said base, a lever pivotally mounted intermediate of said plates and engageable with said last means to release it from engagement with said rack to permit said table to be lowered and means for raising said second standard mounted intermediately said plates.

AARON FRANKLIN CORE.

REFERENCES CITED The following references are of record in the '10 le of this patent:

UNITED STATES PATENTS