Patent documents for an airplane flap control mechanism (patent no. 2,620,147), designed by Van B. Butler and William H. Cook, Jr., December 2, 1952. Includes a written description of the mechanism, diagrams, and a list of related patents. Seven (7)…
Patent documents for an airfoil control apparatus responsive to aircraft speed (patent no. 2,696,355), filed by Thorvold H. Larson, John D. Mayer, Calvin E. Pfafman, William H. Cook Jr., and John F. Kirkbride, December 7, 1954. Includes a written…
Rectangular black metal case with front panel. Panel has tuning dial at center with three rows. Also has tuning selection knob and vol. knob. Has ADF/ANT switch. Tester button at upper right. At bottom of panel "Lear ADF-12E." Holes and flat prongs…
Black Stereo 8, FM radio adapter. The object is a metal black rectangular box with silver screws holding the backing. Interior of object is not visible. A black rubber cord with silver prongs at the end is attached to the top left of the box. On the…
Lear Jet FM Radio Adapter made of out black metal. The adapter is square-shaped with two outer components fitted together. On the front side there is a caution sticker and two black plastic dials. On the side a silver plaque is adhered to the metal…
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…
Items from Box 27, Folder 34 and Box 200, Folder 3 of the William P. and Moya Olsen Lear Papers, circa 1939-1944. Contains assorted ad sheets and brochures for various Lear Avia products. 18 total items.
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…