US633365A - Emery-wheel attachment for sewing-machines. - Google Patents

Description

Y No. 633,365. Patant'ed Sept. l9,'l899.- A. c. PlCKETT EMEBY WHEEL ATTACHMENT FUR SEWING MACHINES.

(Application filed. pr. 17, 1899.]

(No Model.)

UNITED PATENT Gerr -(3n.

AMBRIS C. PICKETT, OF ST. LOUIS, MISSOURI, ASSIGNOR TO SAMUEL L. PICKETT, OF SAME PLACE.

EMERY-WH'EEL ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent N 0. 633,365, dated September 19, 1899.

Application filed April 17, 1899. Serial No. 713,396. (No model.)

To all whom it may concern:

Beit known that I, AMBRIS O. PIOKETT, of the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in Emery-Wheel Attachments for Sewing-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof. v

My invention relates to emery-wheel attachments for sewing-machines; and it consists of the novel construction, combination, and arrangement of parts hereinafter shown, described, and claimed.

Figure 1 is a plan view of my improved emery-wheel attachment for sewing-machines. Fig. 2 is a side elevation thereof, parts being in section to more clearly illustrate the same. Fig. 3 is an enlarged vertical sectional view taken approximately on the line 3 3 of Fig. 1. Fig. 4 is a view in perspective of the adjust able standard which carries thesh aft on which are mounted the friction-pulley and the emery-wheel.

In the construction of the device as shown a single rounded rod 1 has one end formed into a hook which is to be engaged over the edge of the sewing-machine table, and at the end of said hook is fixed a block 2, which engages directly against the under side of said sewing-machine table. A screw'bolt 3 passes vertically through the bar 1, the lower end of which screw-bolt carries a washer 4:, and by means of said screw-bolt the device is rigidly fixed upon the edge of the sewing-machine table.

Arranged for longitudinal movement upon the bar 1 is a sleeve 5, the same being locked at any point along its travel upon said bar by means of the set-screw 6, which passes through the side of said sleeve. Formed integral with the under side of said sleeve is a foot 7, and projecting upwardly from said sleeve is the standard 8, the upper end thereof terminating in a transversely-arranged bearing 9.

An an gle-bracket 10 is arranged for vertical movement on the front face of the standard 8, both of the portions of said bracket being slotted, and the lower portion of the vertical arm of said bracket passes downwardly over a l'ugll, that is formed integral with the front face-of the standard 8, immediately above the sleeve 5. A set-screw 12 passes through the slot in this vertical portion of the bracket, which set-screw enters the standard 8 and holds said bracket 10 at any desired elevation.

A plate 13 is arranged to be horizontally adjusted upon the horizontal portion of the bracket 10, there being a set-screw 14 passing upwardly through the slot in said horizontal portion of the bracket 10 and into the end of the plate 13, the extreme outer end 15 of said plate 13 being bent downwardly over theedge of the horizontal portion of the bracket 10.

Rotatably arranged in the bearing 9 is a shaft 16, on the right-hand end of which is removably held an emery or sand wheel 17, and upon the opposite end of said shaft is rigidly fixed a grooved pulley 18, the same being composed of a pair of disks 10 of uniform size and thickness, and the centers of said disks are riveted together upon the end of the shaft, and the outer portions of said disks are bent ontwardlymvay from one another, so that a continuous V-shaped groove is formed, in which groove the belt of the sewing-machine engages when the device is in operation.

When the device isin operation, the bar 1 is locked in position upon the sewing-machine table by tightening the screw-bolt 3. The screw 6 is now loosened and the sleeve 5 is moved longitudinally upon said bar 1 until the pulley 1S frictionally engages the sewingmachine belt. Said screw 6 is now tightened, after which the angle-bracket 10 may be adjusted verticallykb loosenpig flie set-screw l2 and thentightening the same when said bracket is at the proper elevation, and then the plate 13, which performs the function-of a rest for the article to be sharpened, is 'adjusted longitudinally upon the horizontal arm of the bracket 10 by loosening the screw 14, thesame being tightened when the proper adjustment for said plate has been obtained. When the treadle of the machine is operated, the belt will frictionally engage the pulley 1S and impart rotary movement thereto, and neoessarily the emery-wheel 17 will be rotated, and the article to be sharpened is placed upon the plate 13 and manipulated so that its edge is brought against the periphery of said emery-wheel. By adjusting the bracket 10 vertically the angle desired to be given to the edge of the article that is being sharpened is obtained.

It is always desirable that the plate 13 be positioned very close to the periphery of the emery-wheel, and by my improved construction of making said plate adjustable upon the angle-bracket 10 said plate can always be brought into the desired position as fast as the periphery of said emery-wheel wears away.

My improved construction of the pulley 18, which comprises the pair of disks, has advantages over the pulley of the ordinary-construction, inasmuch as continuous V-shaped grooves are formed in the periphery of the pulley, and as said pulley is tightened against the belt and said belt is operated it will be inclined to wedge in the groove of said pulley, thereby increasing the friction between said pulley and belt, and all danger of slippage between the two parts is obviated.

A11 emery-wheel attachment of my improved construction is simple, strong, and

durable, is easily adjusted, and can be used 1 for sharpening all forms of cutlery and for grinding any small article.

I claim- In a device of the class described, a bar, means whereby said bar is fixed upon the sewing-machinetable,asleeve adj ustablyheld upon said bar, a standard integral with said sleeve, a lug integral with said sleeve at the lower end of said standard, an angle-bracket arranged upon the front face of said standard, each of the portions of which anglebracket is slotted, a plate adj ustably held upon the horizontal arm of the bracket, one end of which plate is bent downwardly over the edge of said horizontal arm, a shaft 1'0- tatably arranged in the upper end of the standard, an emery-wheel carried by one end of said shaft, and a pair of disks riveted to the opposite end of said shaft, the outer portions of which disks are bent outwardly away from each other, substantially as specified.

In testimony whereof I aifix my signature in presence of two witnesses.

AMBRIS C. PICKETT.

\Vitnessesi HEBER W. ADAMS, ALBERT J. MCOAULEY.

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