Watch case vulcanizers in a Samson Tire and Rubber Corporation plant, Compton, 1927

Photograph of watch case vulcanizers in a Samson Tire and Rubber Corporation plant, Compton, 1927. Five cylindrical vulcanizers can be seen at center. Ropes tied in loose knots can be seen hanging from the ceiling in front of each machine, while a man wearing gloves is visible standing between the centermost vulcanizers. Pipes run along the wall behind the machines, while lights hang from the ceiling. Light is visible shining through a window in the left background. A sign on the wall at right reads: "Each one in the Samson factory has his part in the accomplishments shown in this [?] and each one can [?] feel proud of his part." Transparency reads: "Each tire is here vulcanized in steam. Here the tread design makes its appearance in the rubber and the tire emerges a finished product".