US248507A - James robertson - Google Patents

Description

(Model) J. ROBERTSON.

DEVICE FOR RUNNING 0N BELTS T0 MACHINERY. No. 248,507. Patented Oct. 18,1881.

N, PETERS. Pholoulhngrapbfir Walhvnglnn 0 C UNITED STATES PATENT OFrrcE.

JAMES ROBERTSON, OEMIDDLETOWN, CONNECTICUT, ASSIGNOR TO THE VICTOR SEWING MACHINE COMPANY, OF SAME PLACE.

DEVICE FOR RUNNING ON BELTS TO MACHINERY.

SPECIFICATION forming part of Letters Patent No. 248,507, dated October 18, 18 81. Application filed September 17, 1881. (Model) To all whom it may concern:

Be it known that I, JAMES ROBERTSON, a citizen of the United States, formerly of Florence, Massachusetts, but now residing at Middletown, in the county of Middlesex and State of Connecticut, haveinvented new and useful Improvements in Devices for Running on Belts to lVIachinery of which the following is a speciflcation.

This invention relates to that class of devices which are employed for facilitating the replacement of the belt upon the usual pulleywheel of a sewing or other machine.

Prior to my invention a pulley-wheel has been provided with a tooth or finger formed with an out-turned portion or lip presenting a spiral face adapted to catch and direct the belt into place upon the pulley as the latteris turned by means of a handle with which it is provided. A pulley-wheel has also been provided with a pivoted dog having one edge formed with a recess for engaging a belt and retaining it in contact with pulley; and in another instance the belt wheel or pulley has been provided with a sliding or turning spring hook or button swinging over the groove of the Wheel, so as to enable the operator to run on the belt without bending down and carrying the belt with the hand around the wheel.

It is the object of my invention to simplify the means employed for running the belt onto the scored pulley-wheel; and to such end it consists in combining with the fly-wheel a scored pulley-wheel having a notch or recess formed in one of its peripheral flanges, said notch having a straight or hook-shaped wall for engaging the belt, and an opposite inclined wall for allowing the belt to slip over the flange and pass into the pulley-groove, in the manner hereinafter described and illustrated in the accompanying drawings, in which- Figure 1 is a side View of the fly-wheel and the pulley-wheel provided with my improvement. Fig. 2 is a view of the faces of said wheels; and Fig.3 is a side View with the belt caught in the recess of the pulley-wheel.

The letter A designates the fly-wheel, and B the ordinary scored or grooved pulley-wheel, of

' a sewing-machine. These two wheels are preferably cast in one piece, although, if desired, they can beform ed separatelyand then secured together in any suitable way. A notch or recess, C, is formed in one of the peripheral flanges of the pulley-wheel, and has one ofits walls, 0, somewhat obliqued to the plane of the pulley,and its opposite wall, 0 made either hook-shaped or straight and at or about right angles to the plane of said pulley, so that the disengaged belt can be readily caught on the wall 0 in the first instance, and then, as the pulley is turned, it will slip over the oblique wall 0 and automatically run onto the pulley.

The belt automatically assumes its place upon the periphery of the pulley without requiring any further manipulation than engaging the same in a recess, the pulley being provided with a handle, so that it can be turned after the belt-has been caught in the recess, in order to throw the belt onto the pulley.

It will be seen that it will involve no extra expense to cast the pulley-wheel with the notch or recess, and also that the pulley-wheel has no dogs or projections that can be bent, broken oft, or otherwise injured.

The belt can be readily applied to or removed from the pulley-wheel, which will be especially useful in sewing-machines and in small machinery generally, where it is often found desirable to throw on or off a belt.

What I claim is- The combination, with the tly-wheel, of the pulley-wheel carried thereby, and having a recess formed in its flanged rim for engaging the belt, in order to automatically throw the same onto the wheel as the latter is turned, one wall of said recess being formed to hold the belt, and the opposite wall being formed to allow the belt to automaticallyslip over the same and run onto the wheel, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JAMES ROBERTSON.

IVitnesses:

S. GLEAVELAND, J r., GEO. M. PRATT.

Images