US1793060A

US1793060A - Crowbar

Info

Publication number: US1793060A
Application number: US346966A
Authority: US
Inventors: Lincoln H Clements
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-03-14
Filing date: 1929-03-14
Publication date: 1931-02-17
Anticipated expiration: 1948-02-17

Description

Feb. 1-7, 1931. L. H. CLEMENTS 1,793,060

- CROW BAR Filed March 14. 1929 :i 1: t" "H W 1.; ""a; WW

Fi .4.. 052); if 921075105 ATTORN EY Patented Feb. 17, 1931 UNITED stares ATENT OFFICE CROWBAR Application filed March 14, 1929. Serial No. 346,966.

This invention relates to wrecking bars, commonly termed crow-bars, and the primary object is to provide an eilicient, practical and simple form of lever acting bar, which is so formed that it is particularly adapted for use in removing siding, flooring, and

other boards from studdings, joists, and similar beams to which they are nailed, without mutilating such boards as is the case when they are merely pried 0'5 with the wedge end of an ordinary crow bar. Further and more i pecific objects will be disclosed in the course of the following specification, reference being had to the accompanying drawing, in which: Fig. 1 is a side elevation of the bar.

Fig. 2 is a plan view oi the bar. Fig. 3 is an end elevation of the head end of the bar.

Fig. 4 is a side elevation of the bar, with fractional portionsthereof broken away, and

showing it as in a working position with respect to a floor joint from which it is to remove the floor boards.

Referring to the drawing more particularly and by reference characters, 5 designates a metal bar having an ordinary wedge or chisel 6 at one end. This wedge may be used for many purposes in a well known manner, but in the present instance is particularly adapted to remove the first board of a series, especially where such a board is tight up against a wall or other building element where it is dittlcult to otherwise get under the board. At the opposite or head end of the bar 5 is provided with a pair of laterallydisposed depending hooks or lever members 7, that are integral with the bar and project back under but at a slight angle with respect to the bar. Formed integrally with the members 7, but spaced below the bar proper is a curved rocker shoe 8, which also connects with the bar 5, at a rearward point, by an inclined integral brace member 9. The shoe 8 is virtually an extension of the brace 9, and the member 89 is welded into place so as to constitute an integral part of the members 5 and 7 which it connects. It will thus be seen that a minimum amount of metal may be used, and yet the resulting construction is extremely rigid and durable. The bar 5 is further provided at its head end, with a nail pulling claw member 10, that is also integral with the bar but projects in the opposite direction from the hooks 7. This claw 0r pulling member 10 may be relatively short, so as to be in the way as little as possible, yet is given ample working leverage as it has a rocking fulcrum formed by the curved ends of the hooks 7 which project considerably to the opposite side of the bar. 7 66 In removing a board or plank from a beam the hooks 7 straddle the beam and project under the board, in the manner shown in Fig. 4, so that the curved shoe 8 will bear down upon the beam, upon which it rocks when the bar 5 is lifted. As the bar is raised to the dotted line position shown in Fig. 4, the board engaged byv the hooks is forced up from the plank, but, by reason of the structure illustrated, neither the board nor the beam will be multilated or spoiled for other purposes to which they may be applied after the securing nails have been removed by the nail puller claw 10.

It is understood that suitable modifications may be made in the structure as disclosed, provided such modifications come within the spirit and scope of the appended claims.

Having now therefore fully illustrated and described my invention what I claim to be new and desire to protectby Letters Patent is 1. A device of the character described comprising a bar having a pair of spaced hook members extending integrally from one end of the bar and turned back thereunder, a fulcrum shoe connecting the hook members intermediate their ends, and a brace cQllIlecting the fulcrum shoe to a rearward point of the bar.

2. A device of the character described comprising a bar a hook shaped lever member formed integrally With and laterally With respect to one end of the bar and extending back thereunder and a rocker shoe formed at said end of the bar, and laterally With respect to the lever member, to serve as a fulcrum therefore, said shoe having a bridge forming brace connection With a rearward point of the bar.

Signed this 9th day of March, 1929, at Clements, Minnesota.

LINCOLN H. CLEMENTS.