Manufacturers Index - Howland, Angell & King
Howland, Angell & King
San Francisco, CA, U.S.A.
Manufacturer Class:
Steam and Gas Engines
This page contains information on patents issued to this manufacturer.
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Key to Links for Patent Information
USPTO = U.S. Patent Office .
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DATAMP = Directory of American Tool And
Machinery Patents . A sister site to VintageMachinery.org with information
on patents related to machinery and tools. A much easier user interface than the
USPTO's for finding information on machinery patents.
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12,207
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Jan. 09, 1855
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Arrangement of slide-valves and exhaust-passages in steam-engines
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William Cleveland Hicks |
Hartford, CT |
The 2000 book, A Biographical Dictionary of People in Engineering: "HICKS, William Cleveland, 1829-1885, American mechanical engineer and inventor; worked in shop of Woodruff & Reach, assistant superintendent of Colt armory, city engineer of Hartford (CT), superintendent of Volcanic Firearms Co. (1855), numerous patents covering railway switches, steam engine valves, sewing machines (1861), drop press (1863), Volcanic gun later known as Winchester rifle (1864), Hicks engine (MEIA)". |
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25,933
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Oct. 25, 1859
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Amalgamator
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William H. Howland |
San Francisco, CA |
In 1860 the inventor would partner with E. T. King (a witness on this patent) and H. B. Angell to form Howland, Angell & King, makers of steam engines plus sawmill and mining equipment. At the time this patent was issued, co-assignee Hanscom was a partner in Goddard, Hanscom & Rankin, operators of the Pacific Foundry and where Hanscom was the bookkeeper. Howland, meanwhile, was a "quartz owner" and his future business partners, Horace B. Angell and Eben T. King, were the machine shop foreman and the pattern shop foreman, respectively, at the Pacific Foundry. |
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46,470
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Feb. 21, 1865
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Improvement in steam-engines
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William Cleveland Hicks |
New York, NY |
In 1867 the San Francisco firm of Howland, Angell & King exhibited their "Hicks' steam engine" at that year's California Agricultural Fair, where it won a gold medal. |
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91,337
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Jun. 15, 1869
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Improvement in steam-engine stop-valves
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William H. Howland |
San Francisco, CA |
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92,051
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Jun. 29, 1869
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Improvement in steam-engine governors
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William H. Howland |
San Francisco, CA |
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97,090
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Nov. 23, 1869
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Improvement in knife-sharpener
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William H. Howland |
San Francisco, CA |
This knife sharpener uses a pair of conical emery disks mounted on a stand. |
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244,240
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Jul. 12, 1881
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Ore-amalgamator
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William H. Howland |
San Francisco, CA |
This machine mixes mercury into the ore slurry for separating out gold. |
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