Drawings illustrating installation and operation of Graviner safety switch

Illustration of the functions and uses of a Graviner safety switch, a fire fighting equipment on airplane.

Publication date: 1939-10-22

Size: 13.0 x 15.3 cm

Publisher: Tribune Company

Print type: grayscale

Language:

• English

Subject(s):

• Airplane equipment--1930-1940
• Firefighting equipment--1930-1940

Genre(s):

• Illustrations

Type(s):

• still image
• text

Copyright(s):

• These materials are either in the public domain, according to U.S. copyright law, or permission has been obtained from rights owners. The digital version and supplementary materials are available for all educational uses worldwide.

Is part of:

• The Janet A. Ginsburg Chicago Tribune Image Collection

Source(s):

• Chicago Sunday Tribune (October 22, 1939), p. 12

Format(s):

• application/pdf
• image/jpeg