Manual percussive welding apparatus

• US 4,752,666 A
• Filed: 05/26/1987
• Issued: 06/21/1988
• Est. Priority Date: 05/26/1987
• Status: Expired due to Term

• Current Assignee: Titus Engraving And Stonesetting, Inc.
• Original Assignee: Triad Incorporated (TU LLC)
• Inventors: Alessandri, Louis A. Jr.
• Primary Examiner(s): Shaw, Clifford C.
• Application Number:
  US07/054,286
• Time in Patent Office: 392 Days
• Field of Search: 219/95, 219/96, 219/98, 219/99
• US Class Current: 219/95
• CPC Class Codes: B23K 9/22 Percussion welding

Abstract

A fusion welder has a fixed electrode and mounted above the fixed electrode is a movable electrode. The movable electrode is normally spring loaded to be urged toward the fixed electrode and a latch means holds the movable electrode in a locked position. A capacitor charging circuit provides the necessary arc to establish a weld.

Claims

1. Apparatus for electric fusion welding comprising a fixed member for mounting a work piece providing a first electrode, a second movable electrode movable toward and from the first electrode between working and retracted positions, an arm extending across and above the first electrode, a tubular housing having and end thereof fastened to the arm, said second electrode having a support post insulated therefrom and mounted for reciprocal movement within said housing, spring means, said post normally urged by said spring means toward the first electrode, locking means holding the post in a position away from the first electrode, said locking means having a stud with a knob passing thru the housing to normally engage the post and a spring normally urging the stud into the housing whereby when the locking means is disengaged from the post, the post and the second electrode will travel by urgence of the spring toward the first electrode.

2. Apparatus as in claim 1 wherein electric welding energy is supplied across the electrodes and wherein a normally open switch is connected from ground to one electrode the closure of which discharges any residual energy.