US1197892A - Crowbar. - Google Patents

Description

M. BARTH.

CROWBAR. I

APPLICATION FILED MAY 2B. 1913.

Patented Sept. 12, 1916.

wjnese: M131/Zw:

mi Nehmt uns cae. rnamumo. nunmnumn. n. c,

MORITZ BARTH, OF BERLIN, GERMANY.

CROWBAR.

Application led May 28, 1913.

To all whom it may concern:

Be it known that I, MORITZ BARTH, citizen of the German Empire, residing at Preuslauerstrasse 98/99, Berlin, N. 58, Germany, have invented new and useful Improvements in Crowbars, of which the following is a specification.

For lifting and carrying loads are used crowbars by means of which the load is raised. Under the load are then placed rollers on which the load is rolled. The rollers roll under the load to its rear side, and must then be laid again forward under the load. Consequently, the transport is very complicated and occupies too much time, and at the same time the fioor is very often damaged. The crow-bar according to this invention avoids these drawbacks.

The invention consists in providing a crow-bar, neXt to its end -facing the load, with a pair of rollers. The end of the crowbar facing the load, is preferably bent toward the long lever arm of the crow-bar, and the pair of rollers is arranged in the said bend.

Another construction of the invention consists in arranging a second pair of rollers on the crow-bar, above the first.

The drawing shows two constructions according to this invention.

Figure 1 is an elevation of the crow-bar with a pair of rollers, Fig. 2 a view of the same from behind, Fig. 3 an elevation of the crow-bar with two pairs of rollers, while Fig. 4 shows a side elevation of the same, seen from the front.

The crow-bar shown in Figs. 1 and 2, comprises the long lever arm a, the bottom end h' of which, facing the load is bent. Through the bend passes a bolt f. It can be either in one piece with the crow-bar a or introduced into a perforation in the crow-bar. About the said bolt rotate the rollers o Z) mounted on the same. The ends c c of the bolt are provided on each side with a screwthread. A washer d and a nut e as well as, if necessary, a cotter pin, not shown in the drawing, secure each roller to the bolt and prevent it 'from coming off. The crow-bar is then pushed with the point h underthe load (in Fig. 1 a case g), and the lever a is turned into the position shown dotted. The load is then placed in the direction of the arrow on the lever arm a, whereupon the load can be conveniently moved forward on the two rollers Specification of Letters Patent.

Patented Sept. f2, 1916.

Serial No. 770,361.

Z I). At the place of unloading, the lever arm a is turned back, and the crow-bar pulled out from under the load. For specially heavy or large loads two crow-bars could be used engaging at both sides of the load. The first crow-bar would engage as shown in Fig. 1, while the second one would engage at the left hand side of the case. The load would then be easily lifted by the two crow-bars and placed on the four rollers of the crow-bars, on which it can be easily moved.

In Fig. 3 is shown another construction according to this invention, very advantageous for special kinds of loads, for instance for loads of very great weight and small circumference. In this case, in addition to the first pair of rollers b I), is arranged also a second pair of rollers b1 b1. The bolt f1 supporting these rollers, is arranged on the crow-bar at a suitable distance above the first pair of rollers. In this case also the rollers b1 b1 are secured by washers d1 all and nuts e1 e1 screwed on the screwthreaded ends c1 c1 of the bolt f1. Fig. 3 shows dotted the transport position of this crow-bar. The load g is taken up by the end 7L and then turned over with the lever arm a so far that the rollers b1 b1 come on the ground. The load then rests on all four rollers of the crowbar and can be conveniently transported.

The crow-bar according to this invention is simple and cheap to manufacture, at the same time very strong, and has no delicate or fragile parts.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is A crow bar having a point bent at an obtuse angle to the handle, in combination with two rollers mounted upon an aXle arranged transversely to the bar and located at the apex of the said angle one upon each side of the bar, and a second pair of rollers carried on an axle to the rear of the two rollers first mentioned for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MORITZ BARTH.

Witnesses:

HENRY HASPER, WOLDEMAR HAUPT.

topics of this patent may 'be obtained for nve cents each, by addressing the Commissioner of Tatonka,

Washington, D. G." Y

Images