Puncher

Details Puncher Puncher

1993-03-04

1994-01-11

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Machine including plural tools

Plural, simultaneously operational tools

408 53, 408111, 408124, B23B 3916, B23B 4730

Patent

active

052775240

ABSTRACT:
A puncher comprising two drills held on chucks attached on shafts combined with gears provided in two front seats and a rear seat able to be changed in their position so as to change the distance between the two drills, the front seats and the rear seat being connected with a main seat which is possible to be moved up and down by means of a vertical threaded rod and a support rod so as to lower down the two drills to punch holes in one of many distances adjustable in papers placed on a bottom base and pinched immovable in a pincher on the base.

REFERENCES:
patent: 1521158 (1924-12-01), King
patent: 2719461 (1955-10-01), Hawker
patent: 4932814 (1990-06-01), York

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