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| Date: | 1917 |
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| Description: | Photographic postcard three-quarter top view of the engine mounting and front cabin for the Lawson Military Tractor 2 (M.T.2). |
| Date: | 1917 |
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| Description: | Photographic postcard of a close-up of the tachometer drive for the Lawson Military Tractor 2 (M.T.2). |
| Date: | 1917 |
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| Description: | Photographic postcard of the pump double inlet pipe for a Lawson Military Tractor 2 (MT2). Some further details of the engine are visible as well. |
| Date: | 1917 |
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| Description: | Throttle control on a Lawson Military Tractor 2 (MT2). |
| Date: | 1919 |
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| Description: | Elevated view of drafting tables for aircraft design, presumably inside the Lawson plant. There are several stools, desks and tables set up in the corner o... |
| Date: | 1919 |
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| Description: | Interior of the Lawson machine shop, with two Lawson engines, one housed in part of a fuselage, the other set on a wooden support. A long wooden frame is i... |
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| Description: | Gisholt 52" vertical boring mill. The machine has a turret head on the left hand side and "an attachment for crowning pulleys or fly wheels, capable of fin... |
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| Description: | Standard type of Gisholt Vertical Boring and Turning Mills manufactured as 52, 60, 64, and 72 inches. Gisholt was the first company to specialize in heavy ... |
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| Description: | Gisholt 22" Turret Lathe. The metal stamp states: "American Turret Lathe Mfg. Co. Patented December 26, 1899. Semi-Automatic. Warren, PA." The Pennsylvania... |
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| Description: | Gisholt Standard Turret Lathe. The metal stamp states: "Gisholt Machine Co. Madison, Wis., U.S.A." Gisholt was the first company to specialize in heavy typ... |
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| Description: | Standard Turret Lathe, "Conradson," by American Turret Lathe Company in Wilmington, Delaware, "Patented December 26, 1899." Gisholt was the first company t... |
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| Description: | Gisholt Standard Turret Lathe. The metal stamp states: "Gisholt Machine Co. Madison, Wis., U.S.A." Gisholt was the first company to specialize in heavy typ... |
| Date: | 07 22 1929 |
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| Description: | Three-quarter view from front left of a Thaden T-2 parked outdoors. Manufactured by the Thaden Metal Aircraft Company of San Francisco, California. The com... |
| Date: | 07 22 1929 |
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| Description: | Right side profile view of the front of a Comet 7-D air-cooled radial piston engine and wooden propeller on a Thaden T-2 aircraft. A design of the Comet En... |
| Date: | 07 22 1929 |
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| Description: | Left side profile view of a 7-cylinder Comet air-cooled radial piston engine and propeller on a Kreider-Reisner C-4 Challenger aircraft. A design of the Co... |
| Date: | 07 22 1929 |
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| Description: | Left side profile view of a Comet 7-RA air-cooled radial piston engine and a wooden Westinghouse Micarta propeller on a Sierra BLW-2 aircraft. A design of ... |
| Date: | 07 22 1929 |
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| Description: | Close-up view of the front of a Sierra BLW-2 aircraft, fitted with a Comet 7-RA air-cooled radial piston engine and a wooden Westinghouse Micarta propeller... |
| Date: | 07 22 1929 |
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| Description: | Front view of a trimotor Bach 3-CT-4 manufactured by the Bach Aircraft Company of Santa Monica, California. The company was formed in 1927 by L. Morton Bac... |
| Date: | 07 22 1929 |
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| Description: | Three-quarter view from front left towards a trimotor Bach 3-CT-4 manufactured by the Bach Aircraft Company of Santa Monica, California. The company was fo... |
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| Description: | Abstract profile of a 7-cylinder Comet airplane engine without a propeller. It was designed by the Comet Engine Corporation. |
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