No return mark tool

Turning – Severing or cut-off – Interrelated means for tool infeed and circumrotation

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Details

407 8, 407 89, B23B 2900, B26D 112

Patent

active

043041604

ABSTRACT:
A spring actuated, pivoting cutting tool, which is used in conjunction with turning equipment and which at the termination of its cutting stroke automatically lifts the cutting edge off the finished surface to allow the tool to be withdrawn without leaving a return mark, is provided with a spring actuated, slidable shield which substantially covers any gap between the moving parts of the cutting tool, thus reducing the likelihood of chips or other debris from lodging between the moving parts of the tool and preventing its proper operation.

REFERENCES:
patent: Re5277 (1873-02-01), Ettenborough
patent: 893942 (1908-07-01), Sellew
patent: 2525216 (1950-10-01), Garrand
patent: 3283394 (1966-11-01), Hargreaves
Sales Brochures-No Return Mark Turning & Facing Tools of D. L. Nelson Mfg. Co., (Now Barr-Don Inc.) of Grayslake, Ill., 2 pp.

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