Loading

Philadelphia - Service supervisor John Stevens uses a two-way radio to tell has office that a Philadelphia Transportation Company trolley is cleared to continue its course. Forty two service supervisors are strategically located throughout the city where they are alerted by radio to check on tardy trolleys. The system is controlled from a centralized headquarter where a battery of time switched developed by GE engineers keep track of the progress of the trolleys.

General Electric1951-04-19

Museum of Innovation & Science

Museum of Innovation & Science
Schenectady, United States

Details

  • Title: Philadelphia - Service supervisor John Stevens uses a two-way radio to tell has office that a Philadelphia Transportation Company trolley is cleared to continue its course. Forty two service supervisors are strategically located throughout the city where they are alerted by radio to check on tardy trolleys. The system is controlled from a centralized headquarter where a battery of time switched developed by GE engineers keep track of the progress of the trolleys.
  • Creator: General Electric Company
  • Date Created: 1951-04-19
  • Location: Philadelphia - Philadelphia County - Pennsylvania
  • Physical Dimensions: 8 x 10
  • Original Language: English
  • Subject Keywords: Street railroads; radios; Automobiles; General Electric Company. Electronics Department;
  • Type: Photograph
  • Publisher: General Electric Company
  • Rights: This digital image may be used for educational uses. Please cite as miSci- Museum of Innovation & Science. Prior written permission is required for any other use of the images from miSci.

Get the app

Explore museums and play with Art Transfer, Pocket Galleries, Art Selfie, and more

Recommended

Google apps