Percussion apparatus

Details Percussion apparatus Percussion apparatus

1985-02-07

1986-09-02

Larson, Lowell A.

Metal deforming

With means to drive tool

Including yieldable connection in drive train to movable tool

72 75, 30367, 29 90A, B21D 3106

Patent

active

046088539

ABSTRACT:
Percussion apparatus having a compressed air inlet (3) and serving to impart percussive movement to a tool (10), the said tool (10) sliding inside an envelope (1) fixed to the apparatus and being terminated by a spherical portion (22), includes the improvement wherein the said tool (10) includes a hollow tube (13) with one end (21) holding a ball (22) captive, which ball is urged against the end (21) by a spring (24) lodged in the tube (13). When the ball (22) is worn, it is easily changed.

REFERENCES:
patent: 1784866 (1930-12-01), Fahrenwald
patent: 3159025 (1964-12-01), Pais

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