US155609A - Improvement in machines for casting printers leads - Google Patents

Description

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l. 'GOUDALE. v Machines for CastingPrin ters Leads.

Patented Oct. 6, 1874.

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N0. 155,609. Patented Oct. 6,1874.

Q mass-64.7 I 4 Y THE GRAPHIC CGZFHOTO'LITH-SBE M PARK PLACE, N.Y.

UNITED STATES PATENT QFFIGE.

JOHN GOODALE, OF NORTH CAMBRIDGE, ASSIGNOR TO LORENZO DYER,

- on BOSTON, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR CASTING PRINTERS LEADS.

Specification forming part of Letters Patent No. 155,609, dated October 6, 1874 application filed May 22, 1874.

To all whom it may concern:

Be it known that 1, JOHN GOODALE, of North Cambridge, Middlesex county, State of Massachusetts, have invented an Improvement in Machines for Casting Printers? Leads, of which the following is a description:

The nature of my invention is that of a combination of machinery by which molten typemetal is poured onto a flexible revolving belt of metal and pressed down by a similar belt above, being thus, when solidified, formed into a thin sheet, which, by an appropriate device, is cut into a number of strips, which are then planed or smoothed on the upper and-under surfaces, and then cut into the desired lengths; and the object is the manufacture of printers leads. 3 T T Figure l is a view from one side of the machine in perspective. Fig. 2 is a view from the other side, being a vertical elevation. Fig. 3 is a vertical section lengthwise.

In the drawings, A, Fig.2, is one side of a frame (A in Fig. 1 is the opposite side) in the shape of a parallelogram when seen from above. B B B, Fig. 2, are three (of six) legs supporting the frame. 0, Figs. 1, 2, and 3, is a melting-pot, holding the type-metal, and heated by means of the furnace D, which is supported by the frame at one end of it. E, Figs. 1, 2, and 3, is a spout, which conveys the melted metal down to the other portion of the machine. F, Fig. 1, is the handle to a lever attached to the bottom of the melting,

pot G, the inner end of which lever F, Fig. 3, covers an aperture (seen in Fig. l) in the center of the bottom of the melting-pot C, by which the aperture is opened or closed atpleasure, to permit or prevent the passage of the molten metal from the melting-pot. G G, Figs. 1 and 3, is a thin, flexible, endless band of steel, called the lower band, borne by the two lower-band drums H H Figs. 1, 2, and 3, supported by bearings attached to two pairs of the legs of the frame. The two boxes carrying the shaft ends of the lower-band drum H are seen in Figs. 1 and 2 to be so fitted to the respective legs of the frame which bears them as that they can be made to slide back and forward horizontally by means, respectively, of the set-screws J J, Fig. 1, J,

:Fig. 2. A similar arrangement is seen in the drawings ofa pair of sliding boxes, L, Fig. 1, L, Fig. 2, sliding back and forward by means of the pair of set-screws K, Fig. 1, K, Fig. 2, (and kept in place by the two side screws K and lifted and lowered by the top screws K K Figs. 1 and 2,) jupon the tops of uprights projecting perpenjdicularly from the upper surfaces of the twosides, respectively, of the frame A A These two boxes L L bear the shaft ends of a drum, IM, Figs. 1, 2, and .3, one of a pair, called the upper-band drums, which drum bears a second thin, flexible endless band of steel, N, Figs. 1, 2, and 3, called the upper band. The band is :also borne by a second drum, M Figs. 1, 2, and 3, which is borne in a similar manner on the top of two perpendicular projections from the frame A A A pulley, I, is seen in Fig.

This cog-wheel Q gears into the cogdrum is by this means rotated. The friction of the lower band G G rotates the other lowerband drum H. The upper side of the cog- :Wheel Q gears into the cogwheel S, borne by a shaft which carries the lower one, T, Fig. 3,

of a pair of ordinary slitting-rollers. Its mate, T is also seen in Fig. 3, and is actuated by means of the cog-wheel U, Fig. 1. V, Fig. 1,

is an intermediate cog-wheel, actuated by the wheel U, and. actuating the large cog-wheel W, Fig. 1, borne by the sh aft which carries the upper-band drum M which drum is thus rotated. The friction of the upper steel band N rotates the other upper-band drum M. The wheel U also actuates the intermediate cog-wheel X, Fig. 1,which moves the cog-wheel Y, Fig. 1, thus rotating a roller, Y-, Figs. 1 and 3,borne on the shaft of the wheel Y, and passing, parallel with the slitting-rollers, across the space between the sides of the frame A A The cog-wheel S also actuates the intermediate cog-wheel Z, Fig. 1, through which is rotated the pair of cog-wheels A A, borne, respectively,.by a shaft, which pair of shafts carry, respectively, a roller, tlie'upper one of which is seen in Fig. 1, marked B, and both in section in Fig. 3, marked B B. The lower cog-wheel A also actuates the intermediate cog-wheel C, which rotates the cog-wheel D, Fig. 1, and the roller borne on it, D, Fig. 3. E, Fig. 1, is an intermediate cog-wheel, actuated by the wheel D, and actuating the cog-wheel F, Fig. 1, and thus rotating the pair of rollersone, marked G, the lower, borne on the same shaft with the wheel F, and seen in section in Fig. 3. The wheel F rotates the cog-wheel H, Fig. 1, and thus also the upper one of the pair of rollers referred to, borne on the same shaft with the wheel H, and marked J in Figs. 1 and 3. K, Figs. 1 and 3, is a steel blade, called the upper trimmer, held in a narrow trough or frame, which passes from side to side of the frame A A, at right angles to its course, which trough is seen in Fig. 1 to be in the shape of a parallelogram, as seen from above, and is supported by its ends being attached to theinner surfaces of the long sides of the frame A A. The shape of this blade-bearing trough, seen in section in Fig. 3, causes the blade K to be held inclined at an angle of forty-five degrees downward, in a direction toward the two steel belts before described. A set-screw, seen in Figs. 1 and 3, serves to hold the blade K firmly in position. L, seen only in section in Fig. 3, is a similar arrangement of trough, blade, (called the lower trimmer,-) and screw, in which the blade inclines upward toward the belts at an angle of forty-five degrees. In Fig. 2 is seen, at M, a small cog-wheel, borne by the shaft which carries the upper slitting-roller T Fig. 3, which cog-wheel gearsinto another larger cog-wheel, N, Figs. 1 and 2, supported by the frame A A. This wheel .N carries, near its periphery, two short projections or pegs, P P, on opposite sides of the wheel, and parallel with the axis of the same. Q, Fig. 2, is a short peg, whose upper side is chamfered, held at right angles to it by an arm, R, Figs. 1 and 2, which arm hangs loosely from one end (the hither end, in Fig. 2) of a lever, S, Figs. 1 and 2, borne by a stationary bar, T, Fig. 1, which connects two upright standards, U U, Fig. 1, (U, Fig. 2,) attached, as seen in Fig. 1, to one end of the frame A A The tops of these standards are connected by a crosspiece, V, Figs. 1 and 2. The other end of the lever S bears, loosely attached to it by a rivet, an arm, W, Fig. 1, the lower end of which arm is loosely attached, by a rivet, to the blade cross-piece X, Figs. 1, 2, and 3, which latter carries a blade, Y, Fig. 3, whose cutting-edge is downward. (Seen in section in Fig. 3.) This blade cross-piece moves up and down upon two perpendicular rods, Figs. 1, 2, and 3, held by thetop cross-piece V, and, at their lower ends, by the ends of the long sides of the frame A A. These rods are surrounded above the blade-piece X byspiral springs, seen in Figs. 1, 2, and 3, the lower ends of which press upon the upper edge of the blade cross-piece X. Below the blade cross-piece are two other spiral springsone, marked Z is seen in Fig. 2, disposed round the rods Z, whose function is to press up the blade cross-piece X. A A Fig. 1, are two slabs of metal, called the guides, placed on their edges, and lying inside the frame A A, and parallel with its sides. Between them passes the upper portion of the lower steel belt G G. The guides bear, at the point marked B in Fig. 3, eight small rollers, seen only in section in Fig. 3, whose axes are parallel with those of the band-drums. (J C, Fig. 1, (0 Fig. 3,) .is a small frame, sliding up and down between the slabs A A, being held in position bya pairof c1ampsone,1) seen in Fig. 1, and one, D in Fig. 2, the top and bottom of one being seen in Fig. 3, marked D D which clamps are attached at their tops to the frameC, 0 pass down outside the.

O, and melted by the fire in the furnace 1)..

By movement of the lever F, the molten metal is admitted through theape-rture in thebottom of the melting-potinto the spoutE, through which it passes down upon the lower steel band G, whichthe pulley P, Fig. 2, being put in motion-is moving over its two drums, the upper portion passing in a direction from the melting-pot. The molten metal thus received onthe lower belt is kept from running off at the side of the belt by the guides A A and,

as the belt moves, is carried beneath the lower portion of the upper-steel belt N, Fig. 1. By means of the eight rollers at B, Fig. 3, the lower belt is held up and kept in place, so as to present a plane surface. The lower portion of the upper belt N (which belt is also in mo-.

tion) is held down, and a plane surface is secured, by the five rollers at 0 Fig. 3. To

thicken the proposed leads, the set-screws E Figs. 2 and 3, are screwed in, thus lifting the frame 0 0 Fig. 1. The rollers are enabled to yield slightly by means of the pair of spiral springs, one of which is seen in Fig. 3. By the time the molten metal has passed on the belt beyond the small rollers it has solidified,

and presents the form of a thin broad sheet,

which passes between the pair of slitting-rollers T T, Fig. 3, and is by them cut into narrow strips-four, more .or less-which pass between the roller Y, Fig. 4., and the lower trimmer-blade L, Fig. 3, and thence between the drawing-rollers B B, Fig. 3, which draw it against the edge of the trimmer-blade, which length.

planes smooth the lower surface of the leads.

The leads then pass under the upper trimmerblade K, and above the roller D, Fig. 3, to the drawing-rollers J Z G by the joint action of which the upper surface of the leads is planed smooth. The leads are then in the shape of a continuous strip of type-metal, and they pass on, by the action of the drawingrollers J G, to a point under the blade Y, Fig. 3. The rotation (see Fig. 2) of the wheel N brings successively the pegs l? l? in contact with the chamfered peg Q, forcing it down as long as it is in the line of rotation of the pegs P P, and thus drawing down the bar R and one end of the lever SE The bladepiece X and the blade Y'- are thus permitted to be raised by the springs Z Fig. 2, thus permittingthepassage of the type-metal strips.

When the-peg P quits the peg Q the spiral springs (seen in all the three drawings) round the upright rods Z drive down the blade Y, and thus cut oil the leads to the required The pegs P P being, in practice, made movable on the wheel N, which bears them--changeable from hole to hole on the whee1-the length of the leads is thus graduated at pleasure. The pairs of set-screws J J and K K, Fig. 1, are useful for tightening the steel belts. i

I sometimes dispense with some of the upperand under belt supporting and pressing rollers; and I sometimes dispense with my upper steel belt, using a simple roller instead thereof; and I can dispense with the slittingrollers: I do not always place my melting-pot and heating apparatus upon the frame A A I do not claim the combinationof movable belts for forming molten metal into shape; nor do I claim the tightening of the belts by means of screws; but

I claim 1. The combination of the melting-pot and heating apparatus, the guides, and the lower steel belt, with the small rollers borne by the guides above and below the belt, with the slitting-rollers, all substantially as described.

2. The combination of the melting-pot and heating apparatus, the guides, and the lower steel belt, with the small rollers borne by the guides above and below the belt,'with the stationary blades L and K and the two pairs of drawing-rollers, all substantially as described.

3. The combination of the melting-pot and heating apparatus, the guides, and the lower steel belt, with the small rollers borne by the guides above and below the belt, with one or more pairs of drawing-rollers and the cuttingoff blade Y with its actuating apparatus, all substantially as described.

4. The combination of the melting-pot and heating apparatus, the guides, the moving belts and the intermediate rollers, the slittingrollers, and the planing blades, with their pressing-down and drawing rollers, and the cutting-off blade and attachments, all substantially as described.

JOHN GOODALE.

Witnesses:

LEMUEL P. J ENKS, S. DAVIS.

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