US155339A

US155339A - Improvement in pulley-blocks

Info

Publication number: US155339A
Authority: US
Publication date: 1874-09-22
Anticipated expiration: 1891-09-22

Description

A. SICIHINDLEIR.

PuIIey-Blocks.

Patented Sept. 22,1874.

'%066 e 6. v g m UNITED STATES PATENT OFFICE.

ALEXANDER SGHIN DLER, OF NEW YORK, N. Y.

IMPROVEMENT IN PU LLEV-BLOCKS.

Specification forming part of Letters Patent No. 155,339, dated September 22, 1874 application filed September 2, 1874.

To all whom it may concern:

Be it known that I, ALEXANDER ScHrND- LER, of the city, county, and State of New York, have invented a new and useful Improvement in Pulley-Blocks; and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being bad to the accompanyin g drawing forming part of this specification, in which drawing- Figure 1 represents a perspective view of this invention. Fig. 2 is a transverse section of the same.

Similar letters indicate corresponding parts.

This invention relates to a pulley-block of that class which are generally used for washlines; and it consists in the arrangement of a wire strap, which is retained in grooves in the faces of the block, and which is made to form an eye for securing the block in the desired position, in such a manner that a firm, durable, and cheap connection is effected between the retainin g-rin g and the strap, while the strap is readily and easily applied to the block. The block is constructed of four parts, viz., the two cheeks and the parting-segments, and the sheave is provided with a sheet-metal bushing, which prevents its hole from wearing out.

In the drawing, the letter A designates a pulley-block, which is composed of two cheeks, a a, and two parting-segments, b b, which are placed between the cheeks and secured to the same by dowel-pins. By these means the block can be produced with less expense and more durability than if it is cut out of a solid piece of wood. In the cheeks a a are made grooves c for the reception of a strap, 1), of wire, which embraces the block, and the ends of which are twisted together to form a ring, 01, so that by said strap the block is strengthened, and, at the same time, a firm, cheap, and durable connection between the ring at and the strap B is effected. By means of the ring (1 the block is secured in the required position. The checks at a of the block A form the bearings for apin, e, which is stationary, and forms the axle of the sheave C. In order to prevent the pin 0 from turning in its bearings, its ends may be made square to fit in corresponding square holes in the cheeks a a, and in putting the block together the pin and sheave are adjusted on one check; then the parting-segments are put on, and, finally, the second cheek is fastened in the required position. The sheave O is turned out of wood, and its central hole is provided with a bushing, f, of sheet metal, so that the hole in the sheave is prevented from wearing out, as the sheave is made to revolve on the pin 6.

By these means I am enabled to produce a strong and durable pulley-block at a comparatively low price.

What I claim as new, and desire to secure by Letters Patent, is

A wire strap fitted or let into grooves formed in the checks of a pulley-block, and twisted at its ends to form a ring, (I, substantially as described.

ALEXANDER SOHINDLER.