US794693A - Bobbin-driving means for rotatable spindles. - Google Patents

Description

PATENTED JULY 11, 1905.

F. H. THOMPSON. B'OBBIN DRIVING MEANS FOR ROTATABLE SPINDLES.

lllltllltllllN IIIII'IIIIIIK IIIIIIIII\ APPLICATION FILED MAY 5 Patented July 11, 1905.

PATENT OFFICE.

FRANK H. THOMPSON,

SAWYER SPINDLE COMPANY, OF PORTLAND,

OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO MAINE.

BOBBlN-DRIVING MEANS FOR ROTATABLE SPINDLES'.

SPECIFICATION forming part of Letters Patent No. 794,693, dated July 11, 1905.

Application filed May 5, 1905. Serial No. 258,968.

To all whom it may concern.-

Be it known that I, FRANK H. THOMPSON, a citizen of the United States, and a resident of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Bobbin-Driving Means for Rotatable Spindles, of which the following description, in connection with the accompanying drawings, is a specification, like numerals on the drawings representing like parts.

This invention has for its object the production of novel, simple, and effective bobbin-driving means for rotatable spindles, such as are used in spinning, twisting, and similar apparatus.

The construction and arrangement of the driving means is such that clutching members rotatable with the spindle are acted upon by spring-controlled means in such manner as to normally maintain the clutching members in bobbin-driving position.

Application of a bobbin first acts to temporarily effect inward movement and contraction of the clutching members against the action of the spring-controlled means to permit the bobbin to be properly positioned, whereupon the clutching members immediately tend to resume their normal position, engaging the bobbin internally with a driving contact.

The application of a bobbin or its removal is effected readilyand quickly without any undue strain upon the bobbin, and when positioned upon the spindle it is driven in unison therewith.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is a partial side elevation and section of a rotatable spindle provided with bobbindriving means embodying one form of my present invention, a bobbin being shown in section in position, one of the clutching members being removed. Fig. 2 is a similar view, but showing the expander in elevation and illustrating the manner in which the application of a bobbin acts to effect contraction of the clutching members. Fig. 3 is a side elevation of the spindle, expander, and controlling spring, the clutching members being shown in dotted lines. Fig. 4 illustrates in two positions the several connected bobbinclutching members detached. Fig. 5 is a cross-section on the line 5 5, Fig. 4; and Fig. 6 is a side elevation of the spindle and clutching device in normal position.

The rotatable spindle 1 of any suitable character is herein shown as provided with a whirl 2, connected with the spindle by a depending sleeve 3, having its upper end enlarged at 4 to form a bobbin-rest, said enlargement being provlded with an annular re cess or seat 5 concentric with the spindle, Figs. 1 and 2 and dotted lines, Fig. 6. A cylindrical sleeve 6, which may be integral with the bobbin-rest, extends upward therefrom and surrounds the spindle, and on the latter above the upper end of the sleeve an enlargement 7 is provided, substantially a double cone and constituting an expander. The lower cone presents a tapered surface which acts, as will appear, to force outward or expand the clutching members. In the present embodiment of my invention a metallic and substantially cylindrical shell is longitudinally slotted from its upper end downward at 8, Fig. 1, leaving a plurality of elongated resilient clutching members 9, connected at their lower ends by the ring or collar 10, which slips easily over the sleeve 6 and loosely enters the seat 5. Each member 9 is transversely segmental, as shown in Fig. 5, three of such members being herein illustrated and sufliciently thin for the greater portion of their length to be quite resilient, an internal shoulder 11 being formed on each member near its upper end, and above the shoulder the member is provided with a beveled face 12. The beveled faces and the shoulders are clearly shown in Figs. 1 and 2, and it will also be seen that the clutching members are thickened at their upper ends and externally are longitudinally curved or convexed, as at 13.

A coiled spring 14 is interposed between the upper end of the sleeve 6 and the shoulders 11, surrounding the intervening portion of the spindle, the expansibility of the spring normally acting upon the shoulders to raise the clutching members or move them bodily longitudinally of the spindle to force the bev-v bers, connected at 10, rising from the bottom.

of the seat 5. Further upward movement is limited by the expander, as will be obvious, and referring to Fig. 6 it will be seen that When the spindle is running bare the expanded clutch members at their upper ends slightly overhang their lower ends.

When the bobbin 16 is applied to the spindle, the lower end or mouth of the chamber 15 in the head of the bobbin strikes the convexed and expanded surfaces at the upper ends of the clutching members, as in Fig. 2, and as the bobbin is pressed down the clutching members are bodily depressed against the action of the spring. This moves the beveled faces 12 down and away from the expander 7, so that the clutching members can contract and enter the bobbin-chamber as the bobbin is pushed down upon the rest 4, the spring thereafter acting to lift the clutch members far enough to enable the expander to spread said members into driving engagement with the walls of the chamber 15, as in Fig. 1.

The device is strong and durable and simple, the controlling-spring is fully inclosed and protected by the clutching members, and there is practically no chance for loose ends of yarn to catch and be wound or tangled into the bobbin-driving device.

My invention is not restricted to the precise construction and arrangement herein shown, as the same may be modified or varied in different particulars by those skilled in the art without departing from the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with a rotatablespindle, of elongated bobbin-clutching members rotatable therewith and adapted to interiorly engage a bobbin, and spring-controlled means to effect lateral expansion of the clutching members into bobbin-driving position.

2. The combination with arotatable spindle, of resilient bobbin-clutching members rotatable therewith and adapted to interior] y engage a bobbin, an expander on the spindle, and a spring to move said members bodily and longitudinally into engagement with the expander, to force outward the clutchingmei'nbers into bobbin-driving position.

3. The combination with a rotatable spindle, of a plurality of connected and elongated resilient bobbin-clutching members rotatable therewith and adapted to interiorly engage a bobbin,and separate means,includinga spring, to normally expand said clutching members and maintain them in bobbin-driving position.

4. The combination with a rotatable spindle, having an attached expander, of bobbin-clutching members surrounding and having limited longitudinal movement relative to the spindle, and a spring normally tending to move the clutch members longitudinally into engagement with the expander, to force the members outward into operative driving position.

5. The combination with a rotatable spindle, of laterally expansible, resilient bobbinclutching members rotatable therewith and also having a limited bodily movement longitudinally thereon, an expander to internally cooperate with said members, and a spring to normally move the latter longitudinally into position to'be forced outward by the expander.

6. The combination with a rotatable spindle, of bobbin-clutching members rotatable therewith and having a limited bodily movement longitudinally thereon, and means, including a spring, to cooperate with and normally maintain said members in expanded, operative position, the application of a bobbin effecting sufficient longitudinal movement ofthe clutchingmembers to permit their temporary contraction to receive the bobbin.

7. The combination with a rotatable spindle of a collar surrounding the spindle and having a plurality of integral, elongated and resilient clutching members inclosing the spindle and each having an internal shoulder and a beveled face above the shoulder, a conical expander on the spindle to cooperate with said faces, and a coiled spring surrounding the spindle and hearing at its free end against the shoulders, to bodily move the collar and its attached clutching members longitudinally toward the expander. to thereby expand said members and normally maintain the same in expanded position.

8. The combination with a rotatable spindle having an attached bobbin-rest and an expander located above it, said rest having an annular seat concentric with the spindle, of elongated,resilient bobbin-clutching members connected at their lower ends and loosely entering the seat, said members being longitudinally convex externally at their upper ends and having internal beveled faces to cooperate with the expander, and a spring to act upon the clutching members and normally move the same longitudinally toward the expander, to thereby effect lateral expansion of the said members.

9. The combination witharotatable spindle, In testimony whereoflhave signed my name of bobbin-clutching members rotatable thereto this specification in the presence of two sub- 10 gith ani adapted tolircilteriorly engage a gob scribing Witnesses.

in. an means, inc u ing a spring, to e ect lateral expansion of the clutching members FRANK THOMPSON into bobbin-driving position by or through Witnesses: limited longitudinal movement of said mem- GEORGE OTIS DRAPER, bers with relation to the spindle. ERNEST W. W001).

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