Hiram Maxim Pumping Engine, Patent Model
Hiram Maxim Pumping Engine, Patent Model
- Description
- This model was submitted to the U.S. Patent Office with the application for the patent issued to Hiram S. Maxim, of New York, New York, December 22, 1874, no. 158105.
- This model represents a steam engine, pump, and gas-fired boiler, equipped with automatic valves for maintaining the proper level of water in the boiler and for holding a steady pressure in the boiler by starting or stopping the burner. The combination is a steam-pumping unit intended to function automatically without the services of an attendant.
- The engine is supported upon the boiler and consists of a rectangular bed, which serves as the pump suction chamber, upon which is the vertical pump cylinder and the pedestal that supports the flywheel and crankshaft journals and the oscillating steam cylinder. Within the base of the pedestal is a feed-water heater through which the exhaust from the engine passes. A float-operated, weighted, pin valve admits water to the boiler from the discharge pipe of the pump when the level in the boiler falls. The boiler is a cylindrical shell type with combustion chamber formed by water legs in the shape of a truncated cone. A ring burner for gas or kerosene is located in a cylindrical firepot within the combustion chamber. The fuel valve to the burner is held open by a spring and is closed by the pressure within the boiler exerted upon a diaphragm and lever. A hole through the valve permits a small pilot flame to burn at all times.
- Reference:
- This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
- Location
- Currently not on view
- Object Name
- automatic pumping engine, model
- patent model, engine, automatic pumping
- Object Type
- Patent Model
- date made
- 1874
- patent date
- 1874-12-22
- inventor
- Maxim, Hiram S.
- place made
- United States: New York
- associated place
- United States: New York, New York City
- Physical Description
- brass (overall material)
- Measurements
- overall: 11 7/8 in x 5 1/4 in; 30.1625 cm x 13.335 cm
- ID Number
- ER.308683
- accession number
- 89797
- catalog number
- 308683
- patent number
- 158,105
- See more items in
- Work and Industry: Mechanical and Civil Engineering
- Bulletin 173
- Engineering, Building, and Architecture
- Work
- Industry & Manufacturing
- Data Source
- National Museum of American History
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henry maxim
Tue, 2020-02-25 08:08