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Expired
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William Burdett Irvin
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Individual
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Abstract
20,522. Irvin, W. B. Sept. 15. Bobbins, spools, tubes, &c.-In order to prevent the rotation of the metal shields or hoops on the bobbins &c., the hoop is provided with one or more flat portions a, c<1>, either on the external flange or the internal flange, or on both. When the flats are made on the flange of the hoop, the flange of the bobbin may be shaped in a corresponding manner. The invention is shown in Fig. 5 applied to a warping-bobbin, and in Fig, 7 to a spool or tube. In the latter case, the hoop is milled or spun over a shoulder d on the tube, which is cylindrical at this part, the external flats a' terminating below the shoulder, as shown.
GB190620522D1906-09-151906-09-15Improvements in and relating to Shields or Hoops for Bobbins, Tubes, Spools or the like.
ExpiredGB190620522A
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