Patent Model - Improvement in Drain-Traps

Maker and role
James Blessing (b.1837, d.1910), Patentee
Production date
Aug 27 1878
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Object detail

Brass, wood, steel, paint
11 x 8 1/2 x 3/4" (27.9 x 21.6 x 1.9cm)
34 3/4 x 16 3/4 x 1 3/4" (88.3 x 42.5 x 4.4cm)
Blessing's patented invention "is specifically applicable to apparatus by means of which buildings are heated by steam, and in which no direct return to the boiler is provided." (Patent Number 207,482)
Object number
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