B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
164/51
B21D 28/28 (2006.01)
Patent
CA 1116996
DEVICE FOR PUNCHING HOLES IN TUBING ABSTRACT OF THE DISCLOSURE: A punching appparatus, particularly a device for longitudi- nally advancing, while punching, a series of longitudinally aligned ports in cylindrical tubing of the type used in gas burners. The apparatus is distinguished by its employment of a single drive system for advancing and punching, together with adjustments for varying the height of the tubing, the depth of the punched port, and the longitudinal spacing between ports.
364752
Long Kelso M.
Pharr Earl J.
Pharr Leonard
Burner Systems International Inc.
Meredith & Finlayson
LandOfFree
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