US400238A - mccool - Google Patents

Description

(No Model.) 3 SheetsSheet 1.

W A McGOOL DRAWING METALS.

No. 400,238. Patented Mar. 26, 1889.

NV mans, Pholo-Lflhognpher, Washington, 0 c.

(No Model.) 3 Shets-Shet W.- A. MOGOOL.

DRAWING-METALS.

Patented Ma1u26, 1889.

N. PETERS, Phmo-Lflhugnphu, Washington 9. c.

' 3 Sheets-Sheet 3. W. A. MOCOOL. DRAWING METALS.

Patented Mar. 26, 1889.

fizz/gi (No Model.)

\VILLIAM A. MCOOOL, OF BEAVER FALLS, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO II. IV. IIARTMAN, OF Si'iME PLACE.

DRAWING METALS.

SPECIFICATION forming part of Letters Patent No. 400,238, dated March 26, 1889.

Application filed October 1, 1888. Serial No. 286,837. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM A. MCCOOL, a citizen of the United States, residing at Beaver Falls, in the county of Beaver and State of Pennsylvania, have invented certain new and useful Improvements in Machines for Drawing Metals; and I hereby declare the following to be a full, clear, and exact description of the same, reference beinghad to the accompanying drawings, wherein Figure 1 is a side elevation of ametal-drawing machine embodying my invention. Fig. 2 is a plan View of said machine. Fig. 3 is a vertical central longitudinal section of the machine. Fig. i is an enlarged plan view of a portion of the box or tunnel, track, draftchains, sprocket-wheel, grips, and die, the

grips and die being partly in section, showingthe rod to be drawn. Fig. 5 is an enlarged view of one of the grips and its carriage. Fig. 6 is a similar view of the die, showingits attachment to the box or tunnel and the slots for the passage of the draft-chains. Fig. 7 is an enlarged detail view of one of the bearings of a sprocket-wheel. Fig. 8 is a side view of the sectional grip-block or bushing; and Fig. 9 is a front or end view of the sectional gripblock, looking in the direction of the arrow, Fig. 8.

Like symbols refer to like parts wherever they occur.

My present invention relates to machinery for drawing metals, and maybe broadly stated as one which combines two grips, an intermediate die, and power mechanism adapted to actuate either grip, and the equivalent of the two grips may be generally stated as any grip device adapted to be used first to force the rod or like article into the die and then traveling grip or set of grips. Extending therefrom are two side frames, I) B, constituting an open box or tunnel formingatrack, D D, for the carriages E E of the traveling grips and a support or frame for the die-block C. At one end of said tunnel or box, on the shaft of the cog-wheel e, are sprocket-wheels ff, and at or near the opposite end thereof is journaled a shaft, 6, having corresponding sprocket-wheels, h h, while two parallel chain belts, it, connect the said sprocket-wheels and are the preferred means for transmitting power to the traveling grips. The chain belts 7c 70, arranged within the tunnel, may be supported at suitable intervals by rollers Z I, so as to correct any sag thereof and relieve the power-shaft and tightening-shaft g of any unnecessary weight or strain, and the tightening-shaft g (of sprocket-wheels h h) may be journaled in sliding hearings on m, (see Fig. 7,) if desired.

0 indicates the die-block supported on the frames B B, and preferably secured thereto near one end thereof, as shown in Fig. 1.

The preferred detailed construction of the die-box and die is best understood from the enlarged View, Fig. 6, considered in connection with Fig. 4:.

The die-block C may be a solid (or single) casting sufficiently wide to extend from B to B, and provided with flanges by which it may be bolted to the frame or it may be any other construction that circumstances dictate. It has a central circular aperture, 91, for the die, and two lateral apertures, 0 0, for the passage of the draft-chains 7t 7c. The die 1 may be of the tapering concentric solidring pattern, or any other approved form.

Mounted on track D D of frame B and movable therein or thereon is a suitable grip truck or carriage, E, (see Figs. 4 and 5,) which, if desired, maybe a single casting with journals (or journalbearings) P P, for the wheels 10 thereof, or may be built in sections and from any suitable material, if preferred. This carriage has a central grip-aperture, 3, having inclined sides (or tapering) for the reception of the tapering sectional grip 4; and in order to preserve the proper position of the grip-sections in the holder (the truck) 1 prefer to employ keys and keyways or splines,

as indicated at .9, Figs. t and 5. The interior of the grip may he faced or provided with bushing, as at r r, if desired.

At the sides of the grip-aperture, and usually in line therewith, are slots i; t for the passage of the draft-chain belts 7; 717, and intersecting said ehainslots are pin-slots -r I, (see Fig. -i.-,) for the coupling-pins V (see Fig. by which the grip-carriage may be connected with the drattchains 7. 7.", or equivalent source of power.

Two grips and grip-carriages are employed, one placed before and the other behind the die, and they will he found to he more efficient and worlunanlike in construction it the stru .:tural dil'tferenees shown in Fig. 4c are preserved, though it will be at once apparent that the difference between the construction of right-hand and left-hand grip of Fig. 4 is one of form and not of principle.

In order to actuate the grip, a lever, 5, (see Fig. 3,) pivoted or having its fulcrum on the carriage, as at U, is provided with a pin, 7, as indicated in dotted line, Fig. 5, which controls the sections of said grip t to release or witlulrawsaid sections when the grip is to be shifted or loosened.

It will be noted that the form of gripshown is one having an unobstructed axial opening which will permit the free passage of a rod or bar of any length." This is a material feature of the grip where very long rods, bars, &e., are to he drawn, it enables the grip to be shifted from ti mete time to renew its hold on the rods near the die, and it also enables the rod to pass through the rip as readily as through the die, and as continuously, which is a valuable feature in the first or entering grip.

The devices having the features hereinbefore described are operated by me as follows in carrying out my method: o will suppose the pins V V withdrawn from both carriages or trucks E E, power applied by means of the gearing to draftehains 7r 7., and said chains running free or without operating the grip-carriages The rod, bar, tube, or other article to be drawn is passed through the grip of the first (or left -11aud) carriage until its leading end projects therefrom a sutticient distance to pass through the die when the said first carriage has moved up to the die, and the grip of said carriage is then closed bymeans oi the lever 5, as before noted. It is desirable that no excessive length of the leading end of the article should project, in order that there he no loss of power or tendency of the rod or bar to bend where unsupported by the die and rip. The pins V are then inserted and the first (or left-hand) car riage coupled to the power-ehain,whieh causes the carriage to advance and force the end of the article into and. through the die. The pins Y are then withdrawn and the lefthand or first grip released, and the second (oi-righthand) grip actuated by its lever 5 to seize the rod, bar, or other article on. theopposite side of the die, after which the second (orright-hand) grip-carriage is coupled to the power and the article drawn in the usual way. In case of long rods the unobstructed axial opening oi? the die and the arrangemt-mt of the power mechanism permit the second or draft grip to be shifted from. time to time, so as to renew its hold on the rod near the die, whereby any continuous length of rod may be drawn without interrupting the operation of the machine hut mon'ientarily. Further, the character of the grip is such that after the lefthand or first grip has performed its function as an entering grip it becomes a guide, and. therefore is not inoperative or useless thercafter, as many other forms of grip which mi ght be used would be.

.llaving thus described the nature and advantages of my iuvention,wl1atI-claim, an d desire to secure by Letters Patent, is

11. The combination, with a fixed drawingdie, of grip mechanism adapted to first force and then pull the article operated on,suhstantially as and for the purposes specified.

2. The combination, with two grips, of an interposed. fixed die and mechanism for actuating the grips, suhstantiall y as and for the purposes specified.

3. The combination, with a fixeddrawingdie, of a grip having an um)bstructed axial opening throughout its length, and power mechanism for act uatin said grip, said power mechanism arranged at one side, or oil the axial or centerline of the die and grip,whereby thehold ot the grip on the rod heingdrawn may be advanced from time to time to draw continuous rods of any desired lengtl1,sul: stantially as specified.

4-. The combination, with two grips, each of which has an unobstructed axial opening throughout its length, ot' an interposed die, substantially as and for the purposes specified.

In a metal drawing machine, the combination,with a grip-truck having a tapering annular orifice or grip-seat, of a tapering annular sectional grip, sul'istantially as and for the purposes specified.

G. In a metaldrawing machine, the combination,with a grip'truek. having a tapering grip-seat, of atapering sectional grip, a griplcver having a [fulcrum on the truck, and a pin for actuating the grip-sections, substantially as and for the purposes specified.

7. The combination, with a fixed drawingdie, of a pushing-grip arranged in front ol' said die, and power mechanism for actuating said grip, substantially as and For the purposes specified.

In. testimony whereof I allix my signature, in presence of two witnesses, this 24th day of September, 1889.

\VILLIA M A. MUCOOI...

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