Two-stroke machine for making buttons having coplanar shell flanges
AssigneeTecre Co., Inc.
InventorBenjamin A. Braunberger
Life of this patent
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AssigneeTecre Co., Inc.
InventorBenjamin A. Braunberger
Estimating the term…
A machine manufactures buttons having coplanar shell flanges in a two-stroke operation. The machine comprises a crimp die having different resistances to advancement of a ram. The first resistance enables a metal shell margin to partially bend under a flat back that is placed on a first surface of the crimp die. The second resistance enables the shell wall to completely bend against a second surface of the crimp die so as to form flanges that lie in a single plane. Both round and rectangular buttons are manufacturable using the same basic machine. The rectangular machine uses a shifter cage on the ram that rotates in response to indexing a die table on which the crimp die and a pickup die are attached. The round machine uses a rotatable frame on the ram. With the rectangular machine, the shell is initially bent during a pickup stroke of the ram.
A machine for manufacturing buttons with coplanar shell flanges from a shell, a flexible laminate, and a flat back comprising:
Apparatus for manufacturing buttons comprising:
In combination with a framework;
Dependencies are inferred from the claim text.