US723917A

US723917A - Machinery-belt.

Info

Publication number: US723917A
Application number: US11228502A
Authority: US
Inventors: George E Preston
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-06-19
Filing date: 1902-06-19
Publication date: 1903-03-31
Anticipated expiration: 1920-03-31

Description

No. 723,917. PATENTED MAR. 31, 1903.. G. E. PRESTON.

MACHINERY BELT. APPLIOATION FILED JUNE 1s., 1902.

lMODEL.

MXL, f5? M gli@ UNITED STATES VPATENT OFFICE.

GEORGE E. PRFSTON, OF CHICAGO, ILLINOIS.

MACHINERY-BELT.

SPECIFICATION forming part of Letters Patent No. 723,917, dated March 31, 1903.

Y Application filed June 19, 1902- Serial No. 112,285. (Model.)

To @ZZ whom it may concern:

Be it known that I, GEORGE E. PRESTON, a citizen of the United States, residing in Chicago, in the county of Cook andState of Illinois, have invented a new and useful Improvement in Machinery-Belts, of which the following is a specification.

This invention relates to an improved construction of machinery-belts whereby they may be prevented from stretching, so that the weakening of the belts and the lossv of time and annoyance caused by frequent stoppages to take up the slack may be avoided.

My improved belt is composite in its nature-that is to say, it employs two or more material-s in its make-up; Vand iti consists of a continuous band of hard dry rawhide, in combination with a suitable friction-surface. The latter may be leather, fulled rawhide, rubber, or duck, and preferably an outer covering of the same or other suitable material is employed. The rawhide band which forms the main strength-giving feature of my belt is composed of united lengths of ordinary dry and hard rawhide-that is, rawhide which has been eshed and unhaired in the ordinary manner and then thoroughly dried. I use it without softening it or fulling or mechanically treating or stretching it, as I find that in its natural state such rawhide is practically non-stretchable and very strong, while it is also sufficiently pliant for belt purposes, and when combined with a proper leather or other inside facing for friction with the pulley it forms a very desirable and strong belt, requiring no taking up.

4I showin the accompanying drawings at Figure l a side elevation of my improved belt, at Figs. 2 and 3 edge views of dierent portions of the belt, at Fig. 4 a partial plan, and at Fig. 5 a cross-section.

In said drawings, 6 6 represent. lengths of hard dry rawhide united together by scarfjoints and forming a continuous band of the rawhide, possessing great strength and no stretchability under the strain required. To this band is applied an inner surface 7, of

The sections 6 of rawhide are also united by scarfjoints 10, and the rawhide may be scarfed in the ordinary scarfing-machine by first moistening the end which is to be cut away without permanently softening the hide. The joint which unites the endsV of the belt is shown at 1l.

In such a belt as that .described the dry rawhide portion prevents the stretching of the surfacing material, so that the user avoids the frequent waste in the belt itself and the loss of time occasioned by taking up of the stretch. l

I am aware that laminated belts have been patented embodying fulled or prepared rawhide. Such belts are not claimed by me and do not accomplish the end held in View herein, because the fulled or prepared rawhide stretches even' more than the leather.

I claim- 1. The belt herein described consisting of l a band of hard, dry rawhide'and a surfacing of friction material, substantially as specified.

2. The belt herein described consisting of a band of hard, dry rawhide the lengths whereof are united by scarf-joints, and a sur facing of friction material, substantially as specified.

3.' The composite non-stretching belt having its strain-resisting member formed of dry hard rawhide inits natural state, .substan-V tially as specified.

GEORGE E. PRESTON.

Witnesses: Y

Einw. S. EvARTs,

L. LINDAUER.