1920s; Johnson Automobile Lock Co. - Chicago

Three original United States patent document sets issued to Colvin L. Johnson, inventor and assignor to the Johnson Automobile Lock Co. of Chicago, Illinois, representing a tightly focused grouping of early automotive anti-theft innovation. Each set retains its original blue ribbon binding with embossed red patent seal, accompanied by printed certificates and technical specification sheets.

The group includes patents relating to automobile tire-lock cables and spare-wheel locking devices, with clearly printed headings such as "Automobile-Tire-Lock Cables" and "Spare Wheel Lock," alongside detailed mechanical diagrams illustrating cable housings, locking cores, and multi-component securing systems. One set also includes a United States Patent Office trade-mark registration for "Automobile Locks," dated April 16, 1921 and registered June 6, 1922, providing a rare pairing of both intellectual property protection types-patent and trademark-within the same archive. The documents show patent numbers including examples like 1,380,719 and 1,545,902, with crisp linework diagrams and sectional engineering views that emphasize precision manufacturing and functional design during the early automotive era. Collectively, the set captures a formative moment in the development of vehicle security hardware, where innovation was driven by the rapid expansion of automobile ownership and the parallel rise in theft prevention technology.

Johnson Automobile Lock Co. operated during the early 20th century as a manufacturer of automotive locking systems, contributing to a competitive landscape of accessory makers seeking to secure vehicles and their components during a period of explosive industry growth.

Shows moderate age and handling wear including edge wear, corner softening, light toning, and minor surface soiling. Paper remains structurally sound with seals and bindings intact; some sheets exhibit light creasing consistent with archival storage and use.

8" W x 12.25" H each

MM - C-20026 - 040226

Free parcel shipping is subject to limitations. Please carefully review our shipping Terms and Conditions here prior to purchasing.