Curling bobbin and heater

Claim 1

A curling bobbin and heater comprising an integral outer hollow cylinder having an open end and a closed end with the outside surface having a plurality of projections and having an inwardly directed portion disposed at the open end, an intermediate hollow cylinder having an open end and a closed end disposed within said outer cylinder, with said open end corresponding to said open end of said outer cylinder, said intermediate cylinder being formed of heat storing material, an integral inner hollow cylinder disposed within said intermediate cylinder and formed of thermally conductive material with said inner cylinder having a closed end and an open end and with the portion forming said open end attached to said inwardly directed portion of said outer cylinder, a hollow heater cylinder having closed ends and fitting endwise into said inner cylinder, an electrical-heating element disposed within said heater cylinder, electrical connector means mounted in a base portion of said heater cylinder, a base having a recessed portion and electrical connector means detachably receiving said means on said heater cylinder mounted within said recessed portion, a power supply, and circuit connections and switch means for connecting said base to said power supply so that when the end of the heater is placed within said recessed portion and connected electricaLly to said power supply heat is generated within said heater cylinder and when said bobbin is placed endwise over said heater cylinder the heat generated is transmitted to said bobbin, said heater cylinder and said inner cylinder of said bobbin being provided with interfitting retaining portions detachably securing said heater cylinder to said inner cylinder whereby said bobbin and heating element may be detached from said base as a unit if desired.