Precision scriber for tubular workpieces

Details Precision scriber for tubular workpieces Precision scriber for tubular workpieces

1982-10-19

1984-08-21

Stearns, Richard R.

Geometrical instruments

Scriber

Curved surface

B43L 1310

Patent

active

044661932

ABSTRACT:
A precision scribing tool for scribing a circumferential line around a tubular workpiece at a precise distance from the end of the workpiece includes an annular socket with a shoulder defining the bottom of the socket for receiving the end of a tubular workpiece to be socket welded, and a scriber assembly attached to the socket. The scriber assembly includes a hardened point that can be pressed against the surface of the tubular workpiece while the annular socket is manually rotated around the tube end. The scribing device includes a spring biased plunger mechanism that assures accuracy for scribing a line around the tube at a precise distance from the longest point on the end of the tube to permit inspection of a welded joint between the tube end and a socket element to insure that the tube end is located a precise distance within the socket.

REFERENCES:
patent: 2009671 (1935-07-01), Mueller et al.
patent: 2582078 (1952-01-01), Solum et al.
patent: 3664030 (1972-05-01), Pope, Jr.
patent: 4345379 (1982-08-01), Pettingill, Jr.

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