Putting tire into curing mold. From the vacuum expander, the potential new truck tire is taken to this "watch-case" curing mold in which it is baked under high heat and pressure for a long time. The exact time and temperature varies with the type and size of tire. The airbag inside the carcass is filled with live steam during this process so that heat is added from both inside and out. The mold contains the tread pattern, or design, as well as all markings which will appear on sidewall. Under this heat and pressure the rubber turns semi-liquid, and flows into every crevice, completely bonding the rubber processed fabric carcass to the cushion, the cushion to the tread. After this operation it is now one unit--a complete tire. Firestone (General) Tires, Akron, Ohio
Summary
Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description
Tags
ohio
summit county
akron
safety film negatives
akron ohio
tire
mold
vacuum
expander
vacuum expander
truck
truck tire
watch case
heat
pressure
temperature
type
size
airbag
carcass
steam
process
tread
pattern
tread pattern
design
markings
sidewall
rubber
semi liquid
flows
crevice
fabric
fabric carcass
cushion
operation
firestone
general
tires
history of akron ohio
akron free images
akron photographs
united states history
library of congress
Date
01/01/1941
Contributors
Palmer, Alfred T., photographer
United States. Office for Emergency Management.
Location
Akron (Ohio)
,
41.08139, -81.51889
Source
Library of Congress
Link
Copyright info
Public Domain