Patent Model - Interlocking Grate-Bar

Maker and role
Samuel Vansyckel, Patentee
Production date
Oct 09 1855
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Object detail

15 1/4 x 14 1/2 x 1 1/2" (38.7 x 36.8 x 3.8cm)
The object of Vansyckel's patent "is to so cast grate bars, as that they may be free to yield to the consequent expansion and contraction they are subjected to, but so that they shall not warp or twist by the heat, or get out of their proper places, from any cause, and consists in casting suitable projections and depressions on each bar under and against which they shall catch one on the other, so that the whole series, will firmly hold themselves in place, while a single bar may be readily removed and replaced by another in case it should give way." (Patent Number 13,669)
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