US1478789A - Bobbin clutch - Google Patents

Description

Dec. 25, 1923.

yG. H. MAGRATH BOBBIN CLUTCH Filed May 4, 1923 Hr-tarm Patented Dee. 1.6.1923.vv

Application ined nay eusse. semi 1ro. eaaese.

To all whom it may concern:

Be it known that I, GEORGE H. MAGRATH,

A a citizen of the United States, residing at Whitinsville,in the county of Worcester and State of Massachusetts, have invented a new and useful Bobbin Clutch, of which the following is a specification.

This invention pertains to a spindle of the common type used in spinning, twisting and other textile Aoperations and relates particularly to an improved device forcentering and driving a bobbin mounted thereon.

It is the general object of my invention to provide an improved construction of bobbin clutch by means of which the bobbin may be accurately centered and eifectively rotated.

A further object of my invention is to provide a bobbin clutch which is simple in construction, economical to manufacturev and in which the parts cannot be easily displaced or broken. v

in the preferred form, the movable parts are fully enclosed and protected by a strong tubular casing.

My invention furtherrrelates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which Fig. 1 is an elevation of a spindle with my improvements shown in section, taken along the line 1-1 in Fig. 4;

Fig. 2 is a side elevation of thev bobbin-engaging or clutch members before they are bent to circular form;

Fig. 3 is a sectional view taken along the line 3 3 in Fig. 2;

Fig. 4 is a plan view of the clutch members after they'are bent to circular form;

Fig. 5 is a sectional plan view, taken along the line 5--5 in Fig. 1; and

Fig. 6 is a partial side elevation of my improved bobbin clutch.

Referring to the drawings, ll have shown a spindle of the usual type, comprisinga spindle blade 10 and a whorl or pulley 11 having a bobbin supporting shoulder 12. A tubular casing member 13 is iirmly mounted on the blade 10 and at its lower end is preferably seated in a recess in the shoulder 12 of the pulley 11.

rFhe bobbin-engaging or clutch members 14 are preferably formed from a single piece of resilient sheet material having the outline indicated in Fig; 2 and having the intermediate portion of each member 14 displaced outwardly at 15. The ends of the members 14are 'connected bv bands-16 and the combined structureis bent to circular form, as clearly shown in Fig. 4.

The casing-13 is providedl with a series of holes or openings 17 in its side wall at points intermediate its length and the parts are assembled by forcing the clutch members 14 into the lower end of the casing 13 until 'the prpjections 15 are aligned with the openings 1 The ring-shaped bands 16 at the opposite ends of the clutch members 14 preferably engage and are firmly seated against the inner cylindricalwall 0f the tubular casing 13.

The normal position of the parts is indicated in Figs. 1 and 5, with `the middle p0rtions limited in their outward movement by engagement of the clutch members with the inner wall of the casing 13.

lVhen a'bobbin is placed on the spindle, the projections 15 are yieldingly forced inward to a greater or less extent to permit the seating of the bobbin, and thereafter yieldingly engage and effectively drive the bobbin and at the same time center the bobbin on the casing 13. it will be noted that the clutch members are iirmly supported both above and below their driving points and that they are also fully protected by the strong casing 13, so that accidental injury is almost impossible.

Having thus described my invention and the advantages thereof` ll do not wish to be limited to the details herein disclosed otherwise than as set forth in the claims, but what 1 claim is 1. A spindle having, in combination, a spindle blade, a tubular casing mounted thereon and having a plurality of spaced openings in its side walls at an intermediate point in its length, and a plurality ofresilient clutch members each engaging and positioned by said casing both above and below one of said openings and each having an outwardly extended intermediate portion projecting through one of said openings to engage and drive a bobbin mounted on said spindle.

2. A spindle having, in combination, a spindle blade, y a tubular casing mounted thereon and having a plurality of spaced openings in its side walls at an intermediate point in its length, and a plurality of clutch members fixed against the inside of said casing both above and below said openings and having outwardly extending intermediate portions projecting through said openings to engage and drive a bobbin mounted on said spindle. K

3. A spindle having, in combination, a spindle blade, a tubular casing mounted thereon and having a plurality of spaced openings in its side walls at an intermediate point in its length, and a plurality of clutch members mounted within said casing, said clutch members being joined at their opposite ends by ring-shaped supporting portions located both above and below said openin s and said clutch members having outwardly lextended intermediate portions projecting through said openings to engage and drive a bobbin mounted on said Spindle.

4. A spindle having, in combination, a spindle blade, a tubular casing mounted thereon and having a plurality'ofspaced openings in its side walls at an intermediate point in its length, and a plurality of clutch members formed from a single piece of resilient sheet metal bent to provide ringshaped supporting portions at both ends of said clutch members, said portions connecting said members and being firmly seated in said tubular casing above and below said openings, and said members having outwardly displaced intermediate portions projecting through said openings to engageand drive a bobbin mounted on said Spindle.

In testimony whereof I have hereunto aiiixed my signature.

GEORGE H. MAGRATH.

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