US1294493A - Spindle. - Google Patents

Description

0.1LEM0INE 6 G. P. FOURNlER.

SPINDLE.

APPLICATION man MAY is. 1918.

' Patentd Feb. .18, 1919.

iUNFEED STATES PATENT @FFlQE.

SPINDLE.

Specification of Letters Extent.

Patented Feb. 18, 1919.

Application filed May 15, 1918. Serial No. 234,610.

To all whom it may concern:

Be it known that we, Davin Lnarornn and Gnoncn P- FoUnNInR, citizens of the United States, residing at VVhitinsville, in the county of Worcester and State of Massachusetts, have invented a new and useful Spindle, of which the following is a specification.

This invention relates to a spindle, and particularly to improved devices for centering and driving a bobbin supported tliereon.

Variations in the inside diameter of bobbins are unavoidable, and a. satisfactory spindle must be to a certain extent self-adjustable to bobbins of varying inside dimensions.

It is the object of our invention to provide an improved spindle of this self-adjusting type so designed that any bobbin within the range of adjustment provided will be accurately centered on the spindle and will be positively driven thereby.

lVith this general object in view, important features of our invention relate to the form and construction of the bobbin-engaging arms, to an improved supporting structure therefor by which the arms are accurately centered in every position, to improved and simplified devices for forcing the arms yieldingly outwardly, and to means for limiting said outward movement.

Our invention further relates to arrangements and combinations of parts thereafter described and more particularly pointed out in the appended claims.

The preferred form of our invention is shown in the drawings, in which Figure 1 is a sectional elevation of our improved spindle;

Fig. 2 is a transverse section taken on the line 22 in Fig. 1;

Fig. 3 is a transverse section taken on the line 33 in Fig. 1;

Fig. 4 is a perspective view of one of the arms, and

Fig. 5 is a view similar to Fig- 1, but showing the arms in a different position.

Referring to the drawings, we have shown a spindle blade on which is mounted a driving whirl 11 having an annular groove 12 of semi-circular cross section formed on its upper end. A plurality of arms 13 surround the blade 10 and are supported by the whirl 11. At their lower ends the arms are each provided with an outwardly and downwardly extending flange 14: having a rounded lower edge as clearly shown in section in Fig. 1. This rounded edge corresponds in curvature to the section of the groove 12 and rests therein. Pins 15 separate adjacent arms from each other.

A cap 16 is fited closely on a flange 17 extending upwardly from the whirl 11 and serves to retain the arms 13 against displacement. Each arm is provided with a notch 18 near its upper end within which is seated a circular eXpansible spring 19. This spring is preferably formed from a single piece of resilient metal and may have the ends beveled and overlapping as indicated at 20 in Fig. 3. The spring is herein shown as of circular cross section, but this is not essential.

When there is no bobbin on the spindle, the spring 19 forces the arms 18 outwardly to the position shown in Fig- 5, in which position the arms at their lower ends engage the cap 16 and are thereby prevented from further outward movement. As the bobbin is forced downward thereover, the arms move inward to the position shown in Fig. 1. In their inward and outward movements however, they swing about their bearing in the annular groove 12 and are thus continuously centered at their lower ends. The spindle supported thereon is accordingly accurately centered, and the yielding engagement of the arms with the bobbin provides for the efficient driving thereof.

The flanged portion of each arm 13 is of such section that it is in substantial engage ment with the lower side of the cap 16 in every position of the arm, whereby the arm is held firmly seated on the whirl. It should be noted also that the entire centering device is independent of the spindle blade and has no direct connection thereto.

Having thus described our invention, it will be evident that changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope thereof as set forth in the claims,

and we do not wish to be otherwise limited to the details herein disclosed, but what we claim is- 1. A spindle having, in combination, a blade, a whirl, a plurality of upwardly ex tending arms seated on said whirl, a cap fitting said whirl and preventing displacement of said arms, said arms having notches near their free upper ends and a circular expansible spring positioned in said notches.

2. A. spindle having, in combination, a

5 blade, a whirl with an annular recess in its upper encl a plurality of arms surrounding said blade and each seated at its lower end in said recess, means to prevent displacement of said arms, and an expansible circular band engaging the inner faces of said. 10 arms near the upper ends thereof.

In testimony whereof we have hereunto affixed our signatures.

DAVID LEMOINE. GEORGE P. FOURNIER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

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