Raub, Samuel. Memorial of Samuel Raub, Jr., praying the purchase by the Government of the right to use the "double self acting safety valves" invented by him, and the passages of a law requiring the use of the same on all steam boilers.

Raub, Samuel.

Memorial of Samuel Raub, Jr., praying the purchase by the Government of the right to use the "double self acting safety valves" invented by him, and the passages of a law requiring the use of the same on all steam boilers.

[Washington] : Blair & Rives, printers, 1841.

Caption title.

"February 8, 1841. Laid on the table and ordered to be printed."

Steam boilers -- Safety appliances.

Valves.

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