|
US1766244A
|
|
Cutting cylinder
|
|
US1687873A
|
|
Machine for producing flexible roofing elements
|
|
US1682921A
|
|
Apparatus for producing individual shingle-simulating elements
|
|
US1675533A
|
|
Shingle-making machine
|
|
US1652518A
|
|
Adjusting device for saturators and coaters
|
|
US1567919A
|
|
Sheet-cutting machine
|
|
US1536479A
|
|
Temperature-changing appliance
|
|
US1673186A
|
|
Self-threading saturator and coater
|
|
US1501162A
|
|
Knife and holder
|
|
US1467841A
|
|
Automatic sheet winding and measuring machine
|
|
US1464309A
|
|
Sheet-slotting structure
|
|
US1508959A
|
|
Saturator
|
|
US1520014A
|
|
Machine for making asphalt roofing
|
|
US1459048A
|
|
Looper
|
|
US1552421A
|
|
Art of making roofing material
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