Patent Model - Improvement in Coal-Screens
Maker and role
Elbridge Belknap, Patentee
Production date
May 16 1871
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Object detail
Media/Materials
Wood, iron
Measurements
8 x 8 x 4 1/4" (20.3 x 20.3 x 10.8cm)
Description
Belknap's patent improves the screen so "that a substance thrown into the hopper H must fall upon the screen at x, and if it be too large to pass between the bars it will glide over their surface. If, however, it moves with great velocity, it might pass over the next lower section of the screen almost without touching it. The brake g, however, would arrest it, and direct it again upon the screen, to move on and be similarly treated by brake y..." (Patent Number 114,753)
Collection
Object number
2015.14.1301a-c
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