Calvert B. Cottrell Patent

Archive

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Historic Stonington

Name/Title

Calvert B. Cottrell Patent

Entry/Object ID

2018.223.006

Scope and Content

Patent number 296,278, patented April 1, 1884. Patent was awarded to C.B. Cottrell for an Electrotype and Stereotype Casting Mold. "What I do claim as my invention herin, and desire to secure by Letters Patent, is -- 1. A mold for casting electrotype or stereotype plates, in which the cover is made up or composed of sections which are provided with performations adapted to receive pins, substantially as described, and for the purpose's specified. 2. There herein-described improvement in the art of casting electrotype or stereotype plates, which consists in perfecting the curve of the shell or matrix, section by section, and holding such perfected portions in position until 20 after the introduction of the molten metal, substantially as described."