Manufacturers Index - Hendrie & Bolthoff Manufacturing & Supply Co.
Hendrie & Bolthoff Manufacturing & Supply Co.
Denver, CO, U.S.A.
Manufacturer Class:
Wood Working Machinery
This page contains information on patents issued to this manufacturer.
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121,985
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Dec. 19, 1871
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Improvement in stamp-guides
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Henry Bolthoff |
Central City, CO |
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166,743
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Aug. 17, 1875
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Improvement in wet and dry ore crushers
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Henry Bolthoff |
Central City, CO |
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204,945
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Jun. 18, 1878
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Improvement in pulverizing apparatus
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Henry Bolthoff |
Central City, CO |
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260,527
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Jul. 04, 1882
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Cam-shaft box for stamp-mills
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Henry Bolthoff |
Central City, CO |
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261,297
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Jul. 18, 1882
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Mortar for stamp-mills
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Henry Bolthoff |
Central City, CO |
A "stamp-mill" is a machine used to crush ore in mining. This patent is of interest because the assignees' company, Hendrie & Bolthoff Mfg. & Supply Co., sold woodworking machinery, and may have manufactured some such machinery as well. |
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312,956
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Feb. 24, 1885
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Stamp-mill
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Henry Bolthoff |
Denver, CO |
Of interest because the firm of Hendrie & Bolthoff Mfg. & Supply Co. sold woodworking machinery in addition to mining machinery; it is not known whether they manufactured any of their own woodworking machines. |
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451,720
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May. 05, 1891
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Steam-engine
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Henry Bolthoff |
Denver, CO |
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494,518
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Mar. 28, 1893
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Brake mechanism
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Henry Bolthoff |
Denver, CO |
Seen in an 1898 Hendrie & Bolthoff catalog, "Our Double Cylinder Quadruple Friction Hoist. The fixtures comprise steam pipes as shown in cut, patent balanced throttle valve, oil cups, nickel-plated double sight-feed lubricator, oil cans, set steel forged wrenches and foundation bolt ends." |
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515,896
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Mar. 06, 1894
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Mortar for stamp-mills
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Henry Bolthoff |
Denver, CO |
Seen in an 1898 Hendrie & Bolthoff catalog, "Bolthoff Gold Mortar. Especially designed for gold ores and used extensively. We can also furnish Gilpin County low mortars." |
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526,007
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Sep. 11, 1894
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Hoisting-drum
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Henry Bolthoff |
Denver, CO |
Seen in an 1898 Hendrie & Bolthoff catalog, "Our Double Cylinder Quadruple Friction Hoist. The fixtures comprise steam pipes as shown in cut, patent balanced throttle valve, oil cups, nickel-plated double sight-feed lubricator, oil cans, set steel forged wrenches and foundation bolt ends." |
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533,388
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Jan. 29, 1895
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Register-valve
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Henry Bolthoff |
Denver, CO |
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563,217
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Jun. 30, 1896
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Ore-feeder for stamp-mills
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Henry Bolthoff |
Denver, CO |
Seen in an 1898 Hendrie & Bolthoff catalog, "The Bolthoff Improved Challenge ore feeder. A revolving disk feeder without gears or clutches. Feed controlled by a band friction. Built for both Stamp and Huntington Mills." |
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568,832
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Oct. 06, 1896
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Hoisting-machine
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Henry Bolthoff |
Denver, CO |
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582,616
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May. 18, 1897
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Hoisting-machine
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Henry Bolthoff |
Denver, CO |
An example of this machine was seen, labeled, "Hendrie & Bolthoff Mfg. & Supply Co., Denver, Colo.". Hendrie & Bolthoff also made woodworking machinery. |
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793,561
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Jun. 27, 1905
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Engine
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Henry Bolthoff |
Denver, CO |
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1,327,902
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Jan. 13, 1920
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Concentrator
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Henry Bolthoff |
Denver, CO |
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1,332,595
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Mar. 02, 1920
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Head-motion for concentrating-tables
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Henry Bolthoff |
Denver, CO |
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