Image 16. Cold-straightening with press and "gag."  
The Straightener (right) moves the rail back and forth 
under a reciprocating hammer while the Gagger 
(center) inserts a "gag" (iron block with handle) 
between hammer and rail, thereby deflecting and 
straightening every bent portion of the rail.

Details scanned from the original print:

  a. Cold Straightening With Press & Gag - Overall
  b. Detail of Gagger
  c. Grease Bucket
  d. Setup Detail
  e. Lewis Foundry & Machine Co.

The maker of the press, Lewis Foundry & Machine Co.,
was located in Pittsburgh, PA in 1917.

Detail of Gagger

Grease Bucket

Setup Detail

Lewis Foundry & Machine Co.