US1501290A - Pulley - Google Patents

Description

, THOMAS orrivoim, or no-riraian-rarcnraan, -nssrsnoza, BY MEsivE assremvinnrs, To FEDERAL MANUFAGTURING COMPANY; or HOLLAND, MroHrGAN, A CORPORATIQN OF MIGHIGAN.

PULLEY.

Application filed November 2 1, 1921. Serial so. 516,541.

To all whom it may maca /i.-

t'awa and State of hltichigaindiave invented certain new and useful Improvements in 1 Pulleys; and 1 do hereby dc'cla're'tlie following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art'to which it appertains to make and use the same.

This invention relates to a pulley of very simple construction, made from sheet metal and requiring but three parts for the complete pulley. The pulley may be made in large quantities at very low cost from sheet metal, being stamped and formed with dies. It is an object and purpose of the present invention to make a pulley of this type which contains several improvements over the construction shown in my former Patent No. 1,372,900, granted March 29, 1921, whereby the same is designed for the attachment of a swivelling hook for use of the pulley in many places where my former construction would not be as well available, as for use with awnings and the like, at the same time retaining all of the advantages of simplicity and economy of production inherent in the first construction. Many other objects and purposes than those stated will appear as understanding of the invention is had from the following description, taken in connection with the accompanying drawing, in which,

Fig. 1 is a side elevation of the pulley made in accordance with my invention.

Fig. 2 is a vertical transverse section therethrough, and

Fig. 8 is a perspective view of the new and improved pulley wheel used in the pulley.

Like reference characters refer to like parts in the diiferent figures of the drawing.

In the construction of the pulley a hanger is used stamped and formed entirely "from a sin le piece of sheet metal, bent to form a middle section 1 from which two sides 52 extend substantially parallel to each other. Both sides 2 have portions 3 inwardly dished as shown in which a central opening is made, indicated at 4:. One of the sides at its upper end has a portion 5 bent at right angles toward the opposite side and at its end it is narrowed and formed into a tongue 6 which passes through" an opening in said opposite side and clinched down wardly against said opposite sidefas shown. Said opposite .side 'is bent at right angles to form a section 7 which lies directly above the portion 5 and at its end is' turned downwardly, making a part8 lying against the side froniwhich portion 5 is bent" Openings 9 in alinement with each otheraremade through the sections 5 and 7 and a hook 10 of wire is inserted therethrough, its end being formed into a head which comes against the under side of the secflanges when placed together making an annular grooved way around the pulley wheel adapted to receive a cable, chain or other flexible member. Each half of the wheel is formed with a centrally located outwardly pressed hub 13 adapted to enter an opening 4 in the adjacent side 2 of the hanger. The two halves of the pulley wheel are secured together, tangs 14 being struck from the fiat cont-acting portions between the hubs 13 and the outer flanges 12 in the same direction, the tangs on one of the halves of the wheel bending around those of the other to make a permanent and secure connection.

The pulley, outside of the swivel supporting hook requires but three parts, all of sheet metal, and two of these parts are duplicates, made with the same dies. The pulley is strong and durable, is very economically made, and is particularly strong and rigid at the point where the swivel hook is attached. For carrying awning ropes the pulley is particularly useful. It can be made in small size and with the sides 2 of the hanger spaced short distances apart so as to make a small and compact pulley such as is needed in many classes of work for carrying small ropes or cables. The inward dishing of the sides 2 adjacent the points of the rotatable mounting of the pulley wheel reinforces the sides and strengthens them so that they are fully able to withstand all strains to which subjected in service. The appended claims define the invention and I consider myself entitled to all changes and modifications in structure over what is shown and described that come within the scope of such claims.

I claim:

1. A pulley construction comprising a hanger of sheet metal having substantially parallel sides connected at their lower. ends by an integral bottom cross piece, each of said sides at its upper end being bent toward the other side substantially at right angles to make overlapping sections at the upper end of the hanger, a tongue on the end of the under section passing through and clinched against the side opposite to that from which said under section is turned, said sections having alined openings therethrough, a hook swivelly mounted in and passing through said openings, and a pulley wheel rotatably mounted on and between the sides of the hanger.

2. A pulley construction comprising a hanger of sheet metal having substantially parallel sides connected at their lower ends by an integral bottom cross piece, each of said sides at its upper end being bent toward the other side substantially at right angles to make overlapping sections at the upper end of the hanger, a tongue on the end of the under section passing through and bent downwardly against the side of the hanger opposite to that from which the said under sectionis bent, the upper section at its end having a portion bent downwardly to lie against the adjacent side of the hanger, said sections having alined openings there through, a hook, swivelly mounted in and passing through said openings, and a pulley wheel rotatably mounted between the sides of the hanger.

In testimony whereof I affix my signature.

THOMAS OLINGER.

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