US396270A

US396270A - Process of electric welding

Info

Publication number: US396270A
Authority: US
Publication date: 1889-01-15
Anticipated expiration: 1906-01-15

Description

(No Model.)

0. L. OOPPIN.

PROCESS OF ELECTRIC WELDING.

No. 396,270. Patented Jan. 15, 1889.

UNITED STATES PATENT EEic CHARLES Ii. CIOFFIN, OF DETROIT, IlIICIIIGAN.

PROCESS OF ELECTRIC WELDING.

SPECIFICATION forming part of Letters Patent No. 396,270, dated January 15, 1889. Application fi ed June 19, 1888. Serial No. 277,513. (No model.)

To aZZ whom it may concern.-

Be it known that 1, CHARLES l CoEIn-N, of Detroit, in the county of \Vayne and State of Michigan, have invented a new and useful Improvement in Electric \Yelding, of which the following is a specification.

My invention consists in an improved process of electric welding, hereinafter fully described and claimed.

The process consists in forming the voltaie arc in such manner that it shall extend outside of a straight line joining the ends of a positive and negative conductor, and then drawing the conductors while the current is passing along the joints to be weldednvhereby the joint is submitted to the action of the voltaie are; and, as an addition to this process, my invention further consists in feeding to the joints to be welded and within the in fluence of the voltaic are a strip of metal, which is fused by the arc and deposited on or in the joint, whereby the welded joint is re-enforced.

The apparatusby which my processmay be carried out may be varied in form or construction, it only being necessary that the are when formed shall spring beyond the ends of the carbons, which may be done eitherby the position of the carbons or by deflecting the arc magnetically in a well-known manner.

A mechanism which may be used to practice my process is illustrated in the accompanying drawings, in which Figures and 2 are front elevations, being exactly alike except that Fig. 2 has added a guide for feeding the reenforcing piece of metal.

B represents a carbon-holder, and A represents a box on said holder, containing mechanism for feeding the carbons as they are worn away, which is not shown, as it forms no part of the invention designed to be hereby secured.

U C represent two carbon pencils secured in holder B at an angle with each other, whereby the voltaic are L is sprung outward from the straight line joining the point of the carbons, as shown in the figures, so that this are may be brought into contact with the joint to be welded without touching thejoint with the carbon. I

F represents an insulated handle for the carbon-holder B,by which it maybe operated by an attendant.

G II representbimjling-posts through which the poles of the generator may be connected with carbons C C.

E E represent insulated rollers, which may be used to support the holder l3 and permit. it to be drawn along the joints, the rollers S resting either on the sheets of metal to be welded or on table carrying the work. These may be used or not, as willed.

In Fig. 2, I represents a guide, consisting of a hollow pipe secured to the carbon-holderB, and D represents a wire or strip of metal, which passes through the carboii-holder and through said guide I, so that its end passes between the points of the carbons C (l without touching either of them. The wire D should preferably be insulated from the carbon-holder I so that it cannot possibly shortcircuit the carbons. It is evident that when the points of the carbon are placed over the joints to be welded the end of the wire I) will lie upon the joint, and that it will be fused by the voltaic are at the same time the joint is fused, whereby the fused portion of the wire D will be laid along the .joint, thereby re-enforcing the welding.

I am aware that prior patents have described the proccss of electric wohling in which the voltaic are has been sprung between the metal to be welded as one poleand a movable conductor as the other pole. and do not claim any such process herein.

\Vhatl claim as my invmition, and desire to secure by Letters Patent, is

1. The hereindescribed process of elect ric welding, consisting in forming a voltaic are between two conductors extending outward from said conductors and submitting the joint to be welded to the action of said arc.

2. The herein-described process of electric welding, consisting in forming a voltaic arc between two conductors extending beyond the points thereof, feeding a strip of metal into the are between the conductors, and submitting the joints to be welded and said strip of metal simultaneously to the action of said arc.

CHARLES L. (OFFIN Witnesses:

ADELAIDE A. AxDEEsox, GEo. H. LOTHROP.