Metallurgical apparatus – Means for cutting solid metal with heat – e.g. – blowpipes – Circle cutter
Patent
1995-07-20
1996-04-30
Kastler, Scott
Metallurgical apparatus
Means for cutting solid metal with heat, e.g., blowpipes
Circle cutter
266 48, B23K 710
Patent
active
055117651
ABSTRACT:
An attachment used with a cutting torch having a plurality of tubes extending between a handle portion and a head portion of the torch facilitates cutting of circular holes with the torch. The attachment includes a C-shaped support member having spaced bottom and top portions. A variety of center locating members may be secured one at a time by a set adjustment member to the bottom portion of the support member. A clamping member is rotatably mounted on a lower end of an actuating stem that extends through a vertical bore defined through the top portion of the support member. By turning the stem the clamping member is moved downward to clamp the tubes of the cutting torch between the clamping member and the bottom portion of the support member. The attachment is adapted to clamp onto a cutting torch having two or more tubes aligned in the same vertical plane or having three tubes arranged in a triangular configuration. A plurality of concave recesses are defined on a lower surface of the clamping member and an upper surface of the bottom portion of the support member for engaging the tubes. Additionally, instead of a center locating member, a guide fixture rod may be secured by the set adjustment member to the bottom portion of the support member to adapt the attachment to enable the torch to be used to cut straight lines.
REFERENCES:
patent: 1359155 (1920-11-01), Davis
patent: 1564636 (1925-12-01), Smith
patent: 1780814 (1930-11-01), Cregger
patent: 1792317 (1931-02-01), Marsh
patent: 2596133 (1952-05-01), Donahue et al.
patent: 2743101 (1956-04-01), Clark
patent: 4157814 (1979-06-01), Miller
patent: 4283043 (1981-08-01), Kalian
patent: 4621792 (1986-11-01), Thurston
patent: 5360201 (1994-01-01), Balentine
Flanagan John R.
Kastler Scott
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