US1015492A - Electric welding machine. - Google Patents

Description

J. A. HBAN Y.

ELECTRIC WELDING MACHINE.

APPLICATION FILED .TAN.11, 1911.

Patented J an. 23, 1912.

3 SHEETS-SHEET 1.

J. A. HEANY.

ELECTRIC WELDING MACHINE.

APPLICATION FILED JAN. 11, 1911.

Patented Jan. 23, 1912.

3 SHEETS$HEET 2.

.J.A.HEANY.

ELECTRIC WELDING MACHINE.

APPLICATION FILED JAN.11,191L

Patented Jan. 23, 1912.

asnntTs SHEET 3.

f V/ /r/ LNJHHI IUIIIiiI I1 I and lap welding as well. The object of this UNITED STATES PATENT oFFio-E.

JOHN ALLEN HEANY, 0F FLINT, MICHIGAN.

ELECTRIC WELDING MACHINE.

To. all whom it may concern:- Y

Be it lmown that I, JOHN ALLEN HEANY, a citizen of the United State's, and a resident of Flint, county of Genesee, State ofMichigan, have invented certain new and useful Improvements in Electric Welding Machines, of whichthe following is a fulldang clear Specification, reference being h the a y g d awlng's, in'which Figure 1 1s a side elevation, the near side wall of the casing being removed; Fig. 2- a vertical transverse sectional view; Fig. 3 a vertical sectional view, partly in section,

showing the carriage for the movable elec-" trode or horn; Fig. 4 a vertical sectional view partly in sctien, showing the construction of the operating lever; and Fig. 5 a de-.v

t'ail horizontal sectional view taken through the operating lever.

The drawings show this invention adapted for spot welding but it will be obvious that my improvements may be, applied to butt invention is to reduce the mechanism to the simplest and most efficient construction and to provide for a great variety-ofadjustments.

openings 5 in the side walls and being also provided around its upper edge with an upstanding flange c. A casing or box is adapted to seat upon this base, within the flangec, this casing consisting of detachable walls, the several walls havin approximately the same superficial area that is, the box or casing being cubical in shape) in order that any one of the walls that happens to be used for the time being as the bottom may seat within the .base.

Within the casing is suitably aflixed a transformer d of the usual construction from i Specification of Letters IE'atent,

Application filed January :11, 1911-.

Patented'Jan. 23,1912.

Serial No. 602,047.

which lead the two conductors e and *fwhich carry the work current "to the electrodes. The conductor 1 is attachedto theinner end of a terminal 9 extending outwardlythrough a slot in the front wall it of the casing, and clamped to the projecting end of this terminal g is a block'z' adapted to hold the stationary electrode k. This block 5 is split at its lower end to readily clamp detachably upon the terminal 9 and at its upper end it is provided with suitablemeans for detachably'and adjustably holding the electrode or Welding point is. B olts'Z serve to clafnp this electrode holder rigidly but detachably in place on the face of the box.

The conductor e'is of a flexible type and is connected to the lower end of a terminal m, which terminal is bolted removably to a carriage n, which carriage works through a'slot in the top wall 0 of the casing. The upper 'end of the terminal m projects above the upper face of the carriage, and-upon this projecting end is clamped a block p; carrying the upper movable electrode or welding point 9, said block being removably-bolted down to the upper face of the carriage by bolts r. This carriage n depends'into the casing and is guided in its vertical movements by suitable guides a" formed on or fastened to the front wall' ii; of the casing. Suitable" inlet andoutlet pipess extending thro-ug'h'the top .of the casing conduct'cool ing Water to the stationary electrode-holder .z', and flexible branches t of these pipes conduct cooling Water to and from the movable electrode-holder 17.,

J ournaled in a hearing at carried by one of the side Walls 0 of the casing is a short horizontal shaft w, upon whose outer end is secured the operatlng lever m. This lever is attached-to the shaft in such manner that itmay be not only readily removed therefrom but may be rotatably adjusted on theshaft .and rigidly aflixed in its adjusted position;

one convenlen-t way of obtaining this adjust ment is to provide the shaft with a worm. gear 3 clamp the split end of the lever over said gear by-a bolt 2, and employ a worm a to engage the worm gearyand thus rovide for rotatably adjusting the lever on tlie shaft and at the same time for locking the lever in its adjusted position The inner end of the shaftw is provided with a bevel gear I) and also with adjustable stbp 0' adapted to contact with sta- Attached to the shaft f is a horizontal arm is, and pivotally depending from the free end of this arm is a pitman or link 5 whose lower end is-pivotally connected to a horizontal pin or bolt m projecting horizontally inward from the carriage n. A suitable counter-balancing device is employed to normally force the carriage n and its connected parts upwardly to the limit of its-upward stroke, which stroke is determined by the adjustable stop a. Any suitable counter-balancing device may be employed for this purpose, but I prefer employing means consisting of a pair of spring actuated toggle bars 0 pivotally connected to the pin m and slidingly connected to a pair of pins mounted stationarily on the front wall of the casing in a plane below the plane in which the said pin m is adapted to work,

It will be observed that the electrodes or welding points are normally separated, and

that to bring them together upon. the work it is simply necessary to rotate the shaft to by means of the lever as, which action rotatesshaft f and through the medium of the arm is and linlr Z' forces the carriage downwardly against the action of its countor-balance. The flexible conductor 6 and the flexible water pipes t permit a free movement of the carriage. The means for rendering the electrode blocks or carriers removable is important in that it is highly desirable in shop practice to have these blocks or horns readily interchangeable with horns or blocks of other shapes and sizes. By making the operating lever removable from the shaft 10 and so constructing and arranging theparts that the lever may be readily attached to the shaft f, enables the lever to be positioned on the front wall oi the box where it will be more convenientfor the operator on certain pieces of work.

A very important feature of the invention lies in so constructing the casing or box that several of its walls in addition to the bottom wall 32 may be used the time Leas es being as the bottom, by lifting the casing 01? the base and rotating it to bring one of the other walls to the under side. For instance, the casing may be lifted oi the base and rotated backwardly to cause its back wall to seat within the base, thus bringing the electrodes into a horizontal position and to what is for the time being the rear part of the apparatus. Again, it will be observed that the casing may be turned over side-wise in either direction to bring either one of its side walls into position to serve for the time being as the bottom, it being obvious that should it be desirable to bring the side wall 1) to the under side it will be necessary to remove the lever from the shaft 10 and apply it to the shaft f or to operate the carriage in some other suitable manner. in this way the apparatus may be adjusted about to bring the electrodes or welding points to the most convenient position possible within the range of the apparatus for any particular piece or run of worln These adjustments of the lever and the casing however are not intended to be made from time to time during the day or while working on a single piece of work but are intended. only to be made at considerable in tervals to adapt the machine for operation upon a large number of pieces of work of the same kind or type. As these machines are used for welding a great variety of articles having a great variety of shapes and sizes, it will be obvious that this wide range of adjustability is of great advantage.

To give the apparatus a still further range of adjustability for convenience in operation, I so construct the car iage operating mechanism that it may be removed entirely from one side of the casing and mounted upon the opposite side of the electrodes. To permit this to be done i provide the side wall 7 opposite the wall '0 with a bearing a which is a duplicate of the bearing u, a lug 73" which is a duplicate of the lug d, and I provide the front wall 1 1, with a duplicate hearing a for the front end of the shaft j. Thus it will be observed that all the operating parts may be shifted-over to the opposite side of the apparatus when ever in running through a particular piece of work it is more convenient to have the operating mechanism on that side of the box.

The wiring may be arranged in any suitable manner and I do not deem it necessary to describe the same in detail. l prefer mounting upon the operating lever a circuit closer e andadapting the same to be actuated by the finger oi? the operator without removing his hand from the handle in any suitable manner, whereby the circuit may be readily closed after the welding points are brought together on the work and may be readily opened before the welding points are separated to thus prevent arcing.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1 In an electric welding machine, the combination of a base having a-casing seat, and a casing supporting the welding electrodes and mechanism for mani ulating the same, said casing having a plurality of external seat-faces angularly reference to each other, each one of these seat-faces being adapted to be seated upon the base.

2. The combination with a base having a casing seat, and a casing of cubical conformation two or more sides of which are adapted to seat upon the base separately, said casing carrying electric welding means.

3. Thecombination with a base having a casing seat, and a casing of cubical conformation two or more sides of which are adapted to seat upon the base separately, said casing carrying electric welding means, the Welding points or electrodes being carried at one corner' of the casing external" thereto.

4. In an electric welding machine, the combination of a casing, a transformertherein, a reciprocating carriagel working through an opening in the top of the casing, a terminal m extending up through said carriage and insulated therefrom, a terminal g extending out through one of the vertical walls of the casing, these two terminals being electrically connected to the transformer, an electrode-earner fastened on top I of the carriage and clamped removably to the upper end of the terminal m, and another electrode-carrier fastened to one of the vertical walls of the casing and 'clamped 'to the stationary terminal extending therethrough.

5. In combination with an electric welding machine embodying a casing and an inclosed transformer, a stationary terminal connected to the transformer and extending through one of the walls of the casing, an electrode-carrier clamped removably to said terminal and removably fastened to the adjacent wall of the casing, a reciprocating carriage working through an opening in one of the other walls of the casing, means for moving this carriage, a terminal connected to the transformer and mounted on and.ex-' tending through said carriage andinsulated therefrom, and another electrode-carrier removably connected to said terminal and removably fastened to the carriage.

6. In an electric welding machine, the combination of a casing, a stationary elec-- ti'ode-carrier, a carriage carrying anoth'er electrode-carrier, means for actuating said disposed with .carrying one -means connecting detachably to the carriage, and a supplemencarriage embodying a rock shaft extendingthrough one wall of the casing and devices connecting the same inside the casing with the carriage, the outer end of said rock shaft being adapted to receive an operating lever, a supplemental shaft extending through another wall of thecasing and means connecting its inner end with the aforesaid rock shaft, and'an operating lever adapted-for connection to either the supplemental shaft or the rock sha'ft.

.7. In an electric welding machine, embodying a casing, one of the electrodes, means for reciprocating said carriage embodying a shaft extending into the casing through one of the walls thereof and devices connecting the same to the carriage, and a' supplemental operating shaft extending'into the casing through one of the other walls thereof andlying at right angles to the aforesaid shaft, gearing connecting the inner ends of the two shafts, and an operating lever adapted for connecand a carriage carryingtion to the projecting end of either of said shafts. I

8.'In an electric welding machine, embodying a casing and a shifting carriage of the electrodes, ineans for operating-said'carriage embodying a shaft extending into the casing through one of the walls thereof, said shaft having its journal-loearing in said wall at one side of .the carriage, means connecting the inner end of the shaft to the carriage embodying an arm attached to the shaft and a link connecting the arm to the carriage, an operating lever adaptedfor attachment to theouter end of said shaft, and a supplemental iournal-bear ing in the casing at the opposite side of the carriage, whereby the operating shaft may be shifted to the opposite side of the car riage and the operating arm on the shaft be reversed.

9. In an electric welding machine embodying a casing and-a shifting carriage being slidingly mounted on the inner face of one of the walls of the casing and pro- 'e cting out through an opening'in one of the other walls of the casing, means for reciprocating said carriage consisting of a rock shaft removably journaled in an opening in the casing Wall at one side of the carriage, the inner end of said shaft tal journal-bearing in the wall of the casing at the opposite side of the carriage, and an operating lever adapted for detachable con nection with the outer end of said shaft.

10. In an electric welding machine embodying a casing and a carriage carrying one ofthe electrodes and working through one of the walls of the casing, and means for carrying one of the electrodes, said carriage reciprocating said carriage embodying a this latter means being reversible so that the rock shaft extending into the casing thnough one of the walls thereof and journaled in.a hearing on said wall, a lever adapted for detachable connection to the outer end of said shaft and said shaft being removable from its bearing, a supplemental bearing for said shaft in the opposite wall of the casing,

and means connecting the inner end of said shaft with the carriage whereby the-rocking of the. shaft'will reciprocate the carriage,

carriagemayjbe operated through the medium of said shaft from either side of the machine.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses this 9th day of January, 1911'.

' JOHN ALLEN HEANY.

Witnesses:

- BERNARD OBEonER,

N. CURTIs LAMMOND.

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