US760704A - Bobbin and spindle connector. - Google Patents

Description

UNITED STATES latented. May 24, 1904. i

PATENT OFFIcE.

FREDERICK SAWORSKI, .OF BOSTON, MASSAOHUSETTS..

BOBBIN AND SPINDLE CONNECTOR- SPECIFICATION forming part of Letters Patent No. 760,704, dated May 24, 1904. A li atiofl fil d November 14, 1903.- Serial No. 181,115. (No model.)

' To all whom it may concern: l

vIO

Be it known that I, FREDE ICK W. SAwoR- sKI, of Boston, county of Suffolk, State of Massachusetts, h ave invented an Improvement in Bobbin and Spindle Connectors, of which .the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to a means for connectingla bobbin to a spindle, and more especially to that class of devices which connect the bobbin and spindle by means of springwhich isprovided with means whichIenable the bobbin-engaging fingers to maintain the same relative position with respectto the side i of the base of a bobbin when in difierent positions with respect to thespindle. I accom-- .plish this object by the means disclosed in the accompanyingldrawings, in which Figure 1 is a side elevation of aspindle and bobbin provided with my improved connecting means. Fig. 2 is a plan view of the con- Fig. '3 is a sectional viewon the line w m of Fig. 2. Figs. 4 and 5 are sectional views on the lines y y, and a z, respectively, of Fig.3. Fig. 6is'a side elevation of the connector., Figs. ''7, 8, .9, and 10 are detail views of one of the spring-fingers.

A bobbin a, is mounted on the'usual spindle I), said bobbin being of common form and having an enlarged base 0, provided with the usual annular groove a The connector comprises two dished circular plates 0 ol, oppositely arranged, with their bottoms clamped firmly together by a hollow rivet e, the latter being adapted to be driven onto the spindle, so that it will be firmly se.

cured thereon in the desired position. These plates thus unite to form a circular support having an annular groove f in its periphery. The upper plate a is provided with two rec- 5 tangular-shaped diametrically oppositely arranged notches, 0 0 and two fingers -g h are provided, one being arranged in each notch. Saidfingers are each respectively provided withasemicircular-shapedspring 'g h, which are preferably formed integrally with their respective fingers andextend at right angles therefrom. The sides of each finger g h fit somewhat closely into the notches 0 0 and are held against the bottoms thereof by the springs g h, which are arranged in opposite portions of the annular groove f of the support, the end of one spring bearing against the outer side of the finger to which the opposite spring is connected, as shown in Figs. 3 to 6. As the bottom portion of each finger forms one end portion of the corresponding semicircular spring of which the finger is-a part and as the opposite end portion of the spring overlaps the other finger, it will be apparent,

that each spring'is somewhat more than a semicircumference in length, and therefore by its own tension holds itself in the annular groove f by gripping the support in the bottom of said groove at points which are on the same side of a diameter, while the main portion of the spring is on the'opposite side of the same diameter. Said springsare each provided at their'ends withan upwardly-arranged pro-' jecting lug g if, said lugs being arranged in notches 0' 0 the width of said'lugs preferably being less than half the width of'said notches and the end portions of each spring extending across one of the notches c'- 0 so that the side notch.

wholly essential, but they preferably are .bent so that their bobbin-engaging faces are bodily outward in their respective notches a distance correspondingto'thediameter of the bobbin-base, at the same time maintaining the same relative position with relation to the side offthe bobbin-base within certain limits. It

The exact shape of the fingers g h isnot' too will be observed while each spring to an extent holds its corresponding finger from outward movement that each spring also holds the opposite finger from such movement with approximately the same degree of force.

As each finger is moved outward the end portion of the opposite spring which rests against it will be drawn across it, as indicated at the dotted position in Fig. 6, practically the limit of the outward movement of a finger being reached when the inner edge of the lug which rests against it is drawn against the side of the notch in which it is located, as shown in Fig. 6.

Both fingers g h and their springs are exactly the same in all respects, so that they are interchangeable and may be stamped out with the same die. As each plate 0 (Z maybe died out of sheet metal and as the means for connecting them is simple and inexpensive, it will be apparent that the cost of making and assembling the parts will be small. v

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is i l. A spindle and bobbin connector comprising a circular support secured to the spindle and having a peripheral groove, and a pair of notches in the upper side thereof leading into said groove, a bobbin engaging finger arranged in each notch and extending upward from said support, and a spring connected to each finger, each spring being arranged in said groove and extending a part of the distance about said support, substantially as described. I

2. Aspindle and bobbin connector comprising a circularsupportsecured to the spindle and having a peripheral groove, a pair of bobbin-engaging fingers extending upward therefrom, a semicircular-shaped spring connected to each finger and extending at right angles thereto from the lower end thereof, said springs being located in opposite portions of said groove, the extreme end of the spring of one finger bearing against the outer side of the opposite, finger, substantially as described.

' '3. A spindle and bobbin connector comprising a circular support secured to the spindle and having a peripheral groove and a pair of notches in the upper side thereof leading into said groove, a bobbin engaging finger arranged in each notch and extending upward from said support, and a spring connected to each finger, each spring being arranged in said groove and extending a part of the distance about said support, a lug on the extreme end portion of each spring, each lug being of less width than said notches, and the lug of,one spring bearing against the outer side of the finger of the other spring, substantially as described.

4. A spindle and bobbin connector comprising a circular support secured to the spindle and having a peripheral'groove a pair of bobbin-engaging fingers extending upward therefrom at diametrically opposite points, a pair of. semicircular-shaped springs oppositely arranged in said groove, each spring being connected at one end to one finger and bearing against the outer side of the opposite linger, substantially as described.

5. A spindle and bobbin connector comprising a circular support secured to the spindle and having a peripheral groove, :1. pair of bobbin-engaging fingers extending upward therefrom, anda spring connected to each finger, each spring being arranged in said groove and extendingmore than half of the distance about said support, substantially as described.

6. A spindle and bobbin connector comprising a circular support secured to the spindle and having a peripheral groove, a pair of bobbin-engaging fingers extending upward therefrom, a semicircular-shaped spring connected to each finger and extending at right angles thereto from the lower end thereof, somewhat more than half the circumference of said support, said springs being located in opposite portions of said groove, substantially as described.

7 A spindle and bobbin connector comprising a circular support secured to the spindle and having a peripheral groove, and a pair of notches in the upper side thereof leading into said groove, a bobbin engaging finger arranged in each notch and extending upward from said support, and a spring connected to each finger at one end, each spring being arranged in said groove and having a projection on its opposite end arranged in one of said notches, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERICK W. SAVVORSKI.

Witnesses: Y

LOUIS H. HARRIMAN, H. B. DAVIS.

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