US1238353A - Spindle for bobbins. - Google Patents

Description

THOMAS HENRY SMITH, OF JAMESTOWN, NEW YORK.

SPINIDLE FOR BOBBINS.

Specification of Letters Patent.

Patented Aug. 28, 1917.

Application filed September 30, 1916. Serial No. 122,952.

To all whom it may concern:

Be it known that I, THOMAS HENRY SMITH, a citizen of the United States, residing at the city of Jamestown, in the county of Chautauqua and State of New York, have invented certain new and useful Improvements in Spindles for Bobbins, of which the following, taken in connection with the accompanying drawings, is a specification.

The invention relates to spindles for bobbins having means for holding the bobbin on the spindle; and the improvement consists in providing a simple positive holding means for the bobbin on the spindle whereby the resiliency of the wood of the bobbin holds it from loosening or wabbling or jumping up, yet permits quick and easy removal and replacing of the bobbin on the spindle without loss of time to the operative and without cutting or wear on the interior of the bobbin; and the invention consists of the novel features and combinations hereinafter set forth and claimed.

In the drawings, Figure 1 is an elevation of the bare bobbin; and Fig. 2 is an endwise elevation of the lower end of the bobbin showing the smooth interior surfaces and the hole extending through the same. Fig. 3 is a lengthwise sectional view of the bobbin and the whirl and sleeve on the spindle showing the corrugated or irregular surfaced sleeve holding upon the smooth inner wall of the wooden bobbin. Fig. 4 is an elevation of the improved spindle with the annular corrugations or irregular surface of the whirl sleeve; and Fig. 5 is a similar view of the spindle with annular grooves around the whirl sleeve to hold against the smooth inner wall of the bobbin.

Like characters of reference refer to corresponding parts in the several views.

The numeral 10 designates the spindle which has the whirl 11 with the solid or integral whirl sleeve 12 above the same.

The whirl 11 and sleeve 12 are preferably made integral and have the tubular lower end opening 13. The sleeve 12 is usually made slightly conical shape and fits closely within the similarly shaped opening 16 in the bobbin 14. The bobbin 14 has the tubular opening extending therethrough and fitting closely around the upper end of the spindle at 15 so that the bobbin 14 can be dropped onto the spindle 10 and sleeve 12 and pressed quickly to place and as easily removed in changing bobbins,

The speed of the bobbins and spindles is about ten thousand revolutions per minute, and at this high speed if the spindle is slightly out of line or the bobbin unbalanced or imperfectly fitted, this causes the vibration of the spindle and the consequent wabbling and jumping up of the bobbin impairing the winding of the bobbin and making waste. In order to overcome this difliculty no means can be used. which would delay the action of the operative in changing bobbins, hence any twist or too strong holding of the bobbin upon the sleeve 12 or one which would cut or wear out the bobbin would not be practical.

In overcoming this difliculty the annular rings or undulating outer surface of the cone or sleeve 12 as shown at 18 is preferred. These annular rings provide smooth irregularities over which the tubular inner wall 16 of the bobbin 14 may be pressed and the resiliency of the wood causes the bobbin to elastically spring over the annular rings 18 and give just sufficient hold for the bobbin so that it will not work loose or jump up. The depressions in the undulating rings 18 also give suflicient room for the elastic or resilient wood to spring into even after the sleeve or cone 12 and the inner wall 16 wears smooth from constant service. It is apparent that the conical undulations 18 will not wear out or roughen the surface 16 of the cone. The outer surface of the bobbin is bound with a metal band 17 which gives durability to the lower end of the bobbin.

In the modification shown in Fig. 5, a series of annular grooves 19 which may be graduated as shown are provided in the metal sleeve 12 so that they provide the necessary irregularities in the surface of the cone 12 over which the wall 16 of the bobbin 14 may be pressed and serves the purpose in holding the bobbin in place upon the spindle, but the grooves 19 are not as large as the corrugations 18 for the resilient holding of the bobbin, hence said corrugations or grooved surface 18 is preferred.

Any system, however, which would provide irregularities on the whirl sleeve 12 which would not wear or cut the inner surface 16 of the bobbin 14 and which would hold the bobbin 14 so it could be as easily and quickly removed from the spindle 10 and replaced thereon Would attain applicants purpose in substantially the same manner, the main essentials being to have a heavy metallic sleeve or cone 12, on the vouter surface of Which the nonwvearing irregularities are provided, and a smooth surface lfi on the interior Wall of the resilient Wooden bobbinlt so that said bobbin may be pressed down over the irregularities on the sleeve 12 and Will hold just sufficiently to keep the .bobbin from jumping up or Wabbling. {lhe annular undulations or grooves are preferred to a spira-Lsincethey hold equally upon the surface 16.01? the bobbin at all parts of the periphery of the sleet e 12 and the spindle 10 may be turned in either direction. There should usually. be a series of these undulations or grooves so that difierentusize openings on the bobbin l l Will-be accommodated as there are slight variations in thebobbins due to imperfect boring of the same.

*1 claim'as new In combinatlon With a Wood bobbln havlng a smooth bore, and a spindle received in S1-iTl: bore, a metal acorn-like member secured to said spindle and having spaced annular grooves on its periphery, said annular grooves having rounded edges so as to grip the bobbin Walls defining said bore by v rHoMAs HENRY sMiTH. lVitnesses p A. SANDBERG, I. E. NoRDsTRoM.

Copies otthis patent'may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. Q.

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