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• Mixed Materials (17)
• Text (3)
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• diagrams (21)
• patents (8)
• correspondence (6)
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• charts (graphic documents) (2)
• lists (document genres) (2)
• notes (documents) (2)
• photographic prints (2)
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• technical drawings (2)
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• maps (documents) (1)
• memorandums (1)

• In copyright (17)
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• Lear Avia, Inc. (7)
• Lear Avia Corporation (4)
• Aids to air navigation (2)
• Airplanes--Parts (2)
• Artificial satellites (2)
• Brakes (2)
• Clutches (Machinery) (2)
• Lear Developments (2)
• Lear Motors Corporation (2)
• Lunar Orbiter (Artificial satellite) (2)
• Moon--Exploration (2)
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• United States. National Aeronautics and Space Administration (2)
• Automatic Direction Finder (ADF) (1)
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• Lear Jet Corporation (1)
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• Parachutes (1)
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• Swiss American Aviation Corporation (1)
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21 results

[Balloon parachute diagram, December 23, 1918] (Item)

Balloon parachute diagram created by the Balloon Section, Air Service, American Expeditionary Forces, December 23, 1918. Shows former folding method which occasionally resulted in the parachute opening in two lobes.

[Donald D. Viele Lunar Orbiter Collection, Box One, Folder 6 - Technical documents, 1966-1973] (Item)

Items from Box One, Folder 6 of the Donald D. Viele Lunar Orbiter Collection, circa 1966-1973. Folder contains technical documents and diagrams related to the Lunar Orbiter missions. Includes fourteen (14) documents.

[Donald D. Viele Lunar Orbiter Collection, Box One, Folder 11 - Photograph locations attachments -- maps and diagrams, 1967] (Item)

Items from Box One, Folder 11 of the Donald D. Viele Lunar Orbiter Collection, circa 1967. Folder contains maps, diagrams, and other attachments related to Lunar Orbiter photography locations. Includes three (3) documents.

[William P. and Moya Olsen Lear Papers, Box 4, Folder 22; Box 205, Folder 1; Box 209, Folder 1 - Unihand reel and ARL-48 motor reel -- diagrams [RM files], 1938-1939] (Item)

Items from Box 4, Folder 22; Box 205, Folder 1; and Box 209, Folder 1 of the William P. and Moya Olsen Lear Papers, circa 1938-1939. Contains diagrams related to Unihand reel and ARL-48 motor reel. Seven total items.

[William P. and Moya Olsen Lear Papers, Box 24, Folder 4; Box 205, Folder 5 - "Expandable ring clutch (WPL)" [L-D-123], 1943-1944 July] (Item)

Items from Box 24, Folder 4 and Box 205, Folder 5 of the William P. and Moya Olsen Lear Papers, July 1943-1944. Contains correspondence, diagrams, memos, and patent copies related to the expandable ring clutch. 27 total items and original folder labeled "Expandable ring clutch (WPL) / L-d-123."

[William P. and Moya Olsen Lear Papers, Box 25, Folder 10 - "Commutator synchronizing devices (H. Bruderlin)," 1944 July - 1945 June] (Item)

Items from Box 25, Folder 10 of the William P. and Moya Olsen Lear Papers, July 1944 - June 1945. Contains correspondence, diagrams, and patent copies related to commutator synchronizing devices. 14 total documents and original folder labeled "Bruderlin commutator synchronizing devices / L-d-135."

[William P. and Moya Olsen Lear Papers, Box 27, Folder 4; Box 207, Folder 2 - Product "pitch" letters and price lists, 1940 September - 1941 May] (Item)

Items from Box 27, Folder 4 and Box 207, Folder 2 of the William P. and Moya Olsen Lear Papers, September 1940 through May 1941. Contains product "pitch" letters, diagrams, technical drawings, brochures, and price lists related to Lear products. 26 total items and original folder labeled "Lear / General letters re Products / #17."

[William P. and Moya Olsen Lear Papers, Box 26, Folder 9 - "Learmatic (L-P-3) and Learmatic gyromatic radio compass," undated (circa 1939-1944)] (Item)

Items from Box 26, Folder 9 of the William P. and Moya Olsen Lear Papers, circa 1939-1944. Contains a hand-drawn sketch, diagrams, and documents related to the Learmatic and Learmatic Gyromatic Radio Compass. Six total documents.

[William P. and Moya Olsen Lear Papers, Box 22, Folder 16 - "Fastop clutch with friction spring (Nygard, et al)," 1943 October] (Item)

Items from Box 22, Folder 16 of the William P. and Moya Olsen Lear Papers, October 1943. Contains correspondence, patent copies, and diagrams related to the Fastop clutch and brake mechanism. Six total documents and original folder labeled "Fastop clutch with friction spring - Nygard et al / L-d-95 / (80-11)."

[William P. and Moya Olsen Lear Papers, Box 22, Folder 15 - "Fastop clutch with large diameter driven member," 1943 October] (Item)

Items from Box 22, Folder 15 of the William P. and Moya Olsen Lear Papers, October 1943. Contains memorandums and a diagram (numbered A2A753) related to the Fastop clutch and brake mechanism. Three total documents and original folder labeled "Lear Fastop clutch with large diameter driven member / L-d-94 / (80-8)."