US439282A - Machine-belting - Google Patents

Description

l UNITED STATES PATENT OFFICE.

GEORGE F. PAGE, OF CONCORD, NEV HAMPSHIRE.'

MACHINE-BELTING.

SPECIFICATION forming part of Letters Patent No. 439,282, dated October 28, 1890. Application filed July 7, 1890. Serial No. 857,994. (No model.)

To all whom, it may concern.-

Be it known that I, GEORGE F. PAGE, a citizen of the United States, residing at Concord, in the county of Merrimac and State of New .l-Ianipshire, have invented certain new and vertical section through a piece of my iin-V proved belting in which the outer layer of fabric is provided with a greater number of longitudinal hinge-joints than in the belt shown in Fig. 1. Fig. l is a plan of a piece of my improved belting.

,This invention relates particularly to an improvement on a belt composed of an inner layer or thickness of leather, or suitably-prepared rawhide, combined with an outer layer or thickness of fabric composed of a series of independent longitudinal strips separated from each other on a line or lines parallel with the edges of the belt, for which Letters Patent of the United States, No. 400,005, were granted to me on the 19th day of March, 1889.

The object of my present invention is to produce a double belt having the same general character as that for which my aforesaid patent of March 19, 1889, was granted; but in which certain additional advantages are secured by varying the construction of the outer layer or thickness of fabric, as hereinafterparticularly set forth.

In the said drawings, A represents my imn proved belt, which is composed of an inner layer or thickness l) of leather or suit-ablyprepared rawhide, which forms the under or wearing surface which comes in contact with the pulleys, as set forth in my aforesaid patent. To this under layer or thickness b of leather or rawhide, is secured, by cement,

rivets, sewing, or in any other suitable manner, an outer layer or thickness c of knit or longitudinal grooves or flexible hinge-joints d, whereby sufficient lateral flexure of the belt is secured to enable it to readily conform to: the crowning surface of the pulley over which it may run, thus making complete contact therewith lfrom side to side, as is desirable to secure the best results. These longitudinal hinge-joints d are preferably produced in the operation of weaving or knitting the fabric, by leaving out or omitting one or more of the longitudinal or warp threads at the point or points where the hinge joint or joints occur, thus reducing the thickness of the fabric atthe point or points where lateral flexure is desired. Any other means or method may, howf ever, be adopted in manufacturing the fabric which will produce therein one or more of the said longitudinal flexible joints.

The above-described belt, while it retains the iiexible longitudinal joint or joints in the outer layer or thickness, as in my aforesaid patent of 1889, has the additonal advantage that the outer layer or thickness is composed of but a single strip of fabric, so that while the belt is equally as flexible as that shown in my aforesaid patent it is nevertheless stronger, and the liability of the belt splitting along the'line of the joint or joints is entirely avoided. Another advantage which I secure is that there are only two edges to the outer layer of fabricinstead of four or more. Hence there is much less necessity of fastening the two layers or thicknesses together by means other than cement, and there is also much less liability of the fabric separating from the leather or prepared rawhide which forms the inner layer or thickness. I have also found in practice that there is a liability of a belt in which two or more separate strips of fabric are used for an outer layer becoming crooked by reason of the strips not stretching uniformly; but Where the outer layer is composed of a single strip of fabric provided with a lon- IOO gitudinal joint or joints in accordance with my invention this ditculty is avoided.

The purposes o1' uses to which I propose to apply my improved belt, and the advantages derived from its use other than those above mentioned, are substantially the same as described in my aforesaidv patent of 1889.

What I claim as my invention, and desire to secure by Letters Patent, is-

A driving-belt composed of a layer or thickness of leather or suitably-prepared rawhide,

consisting of a single strip forming the inner or Wearing surface or portion, combined with an outer layer or thickness consisting of a strip of fabric which is provided in the Weav- 15 ing or knitting with one or more longitudinal flexible joints, substantially as and for the purpose described.

Witness my hand this 2d day of July, A. D.

GEORGE F. PAGE. In presence of- HARRY W. AIKEN, R. HENRY MARSH.

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