Patent Model - Device for Fastening Mouth-Pieces to Gas-Retorts

Maker and role
John Dell, Patentee
Production date
Jun 02 1885
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Object detail

Wood, brass
6 x 7 x 4 1/2" (15.2 x 17.8 x 11.4cm)
Dell's patent "consists of a clamp, which is turned at about a right angle at each end, one end being bored and screw-threaded to receive a set-screw, which bears against the flange of the mouth-piece, and the other down-turned end engaging in the usual recess or tenon, which is formed in the retort to contain the nut." (Patent Number 318,965)
Object number
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