US743362A

US743362A - Molding-machine.

Info

Publication number: US743362A
Application number: US9525402A
Authority: US
Inventors: Bruce Clark White
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-02-24
Filing date: 1902-02-24
Publication date: 1903-11-03
Anticipated expiration: 1920-11-03

Description

No. 743,362. PATENTED NOV. 3, 1903. B. 0. WHITE. MOLDING MACHINE.

APPLICATION FILED FEB. 24, 1902.

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' No. 743,362. PATENTED NOV. 3, 1903.

- B. 0. WHITE.

MOLDING MACHINE.

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No] 743,362. PATBNTED News, 1903.

B. 0. WHITE. MOLDING MACHINE,

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1 29160! W Z0, %M%/. Brute azwrk "late lam/6Q M m: unnms PETERS c0. FHOTO-LITHO, Musumorom n c No. 743,362. PATENTED NOT-3, 1903.

B. 0. WHITE. MOLDING MACHINE.

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No. 743,362. PATEN'TED NOV. s, 1903. B. 0. WHITE.

MOLDING MACHINE.

APPLICATION FILED FEB. 24. 1902.'

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UNrTED STATES A Patented November 3, 1903".

PATENT Enron.

MOLDING-MACHINE.

SPEGIFIGATION'forming part of Letters Patent No. 743,362, dated November 3, 1903.

Application filed February 24, 1902. Serial No. 95.254. (No model.)

To all whom it may concern:

Be it known that I, BRUCE CLARK WHITE, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Molding- Machines; and I'do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in molding-machines forgiving solid form to pulverulent or semiplastic materials and which is adapted for use in making briquets or solid blocks of granular or pulverulent fuel prep,- aratory to burning, or from finely divided or pulverized ores or minerals preparatory to smelting, or for other similar uses.

A machine embracing the principal features of construction herein illustrated is shown in a prior application for United States Letters Patent, filed June 29, 1901, Serial No. 66,463; and the present invention embraces improvements in the machine set forth in said application. 7

The invention consists in the matters hereinafter described, and pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a View in front elevation of a machine em-* bodying my invention. Fig. 2 is a side view thereof. Fig. 3 is a vertical section of the machine, taken upon line 3 3 of Fig. 1. Fig. 4 is a transverse vertical section takenupon line 4 4 of Fig. 3. Fig. 5 is a detail plan section taken upon the indirect line of Fig. 3. Fig. 6 is a sectional plan view taken upon line 6 6 of Fig. 3. Fig. 7 is a detail plan section taken upon line 77 of Fig. 3. Fig. Sis a detail plan section taken upon line 8 8 of Fig. 3. Fig. 9 is a detail plan section taken upon line 9 9 of Fig. 3. Fig. 10 is a detail cross-section of the parts shown in Figs. 8 and 9, taken upon line 10 10 of Fig. 9. Figs. 11 and 12 are edge and face views, respectively, of a spacing plate or shim shown in Figs. 13 and 14 are like views of another spacing plate or shim. Fig. 15 is a detail plan section taken upon line 15 15 of Fig. 4. Fig. 16 isa detail sect-ion taken upon line 16 16 of Fig. 15. Fig. 17 is a sectional viewtaken upon line 17 17 of Fig. 18, showing an adjustable connection of the cam-engaging roller with the arm through which the moldplate is actuated. Fig. 18 is a face view of the arm shown in Fig. 17 with the plate omitted, which is shown in said Fig. 17 as applied to the roller-pivot at the side of the arm remote from the roller.

As shown in the said drawings, A A designate two parallel vertically-arranged frame standards or uprights, which are joined with each other at their lower ends by means of a transverse recessed part or box A, which in the instance shown is cast integral with the frame-standards A A.

B is a horizontally-arranged shaft which extends through and has bearings in the upper ends of the frame-standards A A, said shaft being provided between the standards with an eccentric B.

0 designates a gear-wheel on the shaft B, and D a gear-pinion which meshes with the gear-wheelC and is mounted on a countershaft D, through whichdrivingpoweris transmitted to the machine. Said counter-shaft is shown as provided with a driving-pulley D E designates a mold-plate located below the level of the shaft B and which moves in an oblique path or in a direction toward and away from the shaft B and which slides at itsends upon oblique guidesurfaces a on the forward edges of the frame-uprights A. Said mold-plate is provided with a plurality of mold-recesses e and with a wall or flange E, which rises from the rear or lower edge thereof and forms with the mold-plate a mold box or receptacle for the material to be inserted in the molds.

F F F designate reciprocating plungers, which are attached at their upper ends to a cross-head F, located between the shaftB and the mold-plate E and the lower ends of .which are adapted to enter and pass through the mold-recesses e,'said plungers being arranged obliquely or in an inclinedpjosition and having endwise movement in an oblique path. The cross-head F is mounted to slide on inclined guide-surfaces on the frame-standards A. Said cross head is actuated through the medium of a pitman G, which is engaged with the eccentric B of the shaftB and is connectcd with the cross-head by a pivot-pin G.

I I indicate endwise-movable pistons located 'below and in alineinent with the plungers F F and which enter and are adapted to close the lower ends of the mold-recesses, said pistons having separate sliding and yielding connection with the frame of the machine, as will hereinafter more fully appear. The entrance of said plungers into and their exit from the ends of the mold-recesses is effected through their own reciprocating movement and the reciprocatory movement of the moldplate E.

The devices for affording a yielding support for the pistons I I consists of a bearingplate A having bearing-apertures for the said pistons, springs K K, located in the hollow casting or box A at the base of the machine, and yoke-plates L L, located between said springs and the lower end of said several pistons and which serve to transmit pressure from the'springs to the pistons.

From the general arrangement of the parts above described it will be observed that the machine illustrated in the accompanying drawings differs from that shown in the said prior application hereinbefore referred to from the fact that the main frame is upright instead of nearly horizontal, the plungers F F and pistons I I are arranged in an inclined position instead of horizontally, and that the moldplate E instead of being vertical, or nearly so,is so nearly horizontal that material deposited thereon tends to enter the moldrecesses by the action of gravity. The machine illustrated in the accompanying drawings also differs from that shown in said prior patent from the fact that in said prior patent the reciprocating mold-plate formed one side of a mold-box in which the material was deposited from above, whilein the construction shown theinclined upper surface of the moldplate serves, in connection with the inclined flange or plate E, which rises from its lower edge, to form a V-shaped or angular trough or receptacle into which the material is delivered and near the lower angle of which the molds are located, so that the material to be fed to the molds tends to pass or fall by gravity along the inclined surfaces of the mold-plate and its flange E and to thereby reach a position to enter the mold-recesses.

Now referring to the details of construction in the machine illustrated the cross-head F, as shown clearly in Fig. 5, bears at its ends against the inner faces of the frame-standards A A and is adapted to engage inwardlyextending oblique guide-flanges a, formed on the said inner faces of said standards. guide-ribs areshown aslocated near the rear or innermargin of the cross-head and as adapted to engage a bearing recess or groove formed partially in the rear edges of the cross-head and partially by means of cap plates F bolted to the said rear edges of the crosshead, as clearly shown in Figs. 3 and 5. The pitman G is shown as made nearly as wide as the cross-head itself, and its end which en- Said gages the cross-head is provided with two laterally-separated annular parts 9 g, Figs. 4 and 5, which engage said pivot-pin near the ends of the same and adjacent to the integral'end flanges f of the cross-head,which rise above the pivot-rod and are provided with bearing-apertures for the ends of said rod. In its portion between the annular parts g g the pivot-pin rests in contact with a concave bearing-surface f on the cross-head and with a similar concave bearing-surface g on the pitman, so that the thrust of the pitman is transmitted to the cross-head directly through said pin, which latter by the construction described is interposed throughout nearly its entire length between the opposing bearingsurfaces on the pitman and cross-head. Said pitman has at its upper end a semicircular bearing-recess to receive the lower half of said eccentric and is provided with a cap G which is secured to the pitman by bolts and forms the top of a split bearing-box, of which the body of the pitman constitutes the lower part. Provision is herein shown for lubricating the bearing between the pitman and the eccentric, consisting of oil channels or recesses g formed in the body of the pitman and in the cap G and lubricating-chains g', which extend around the eccentric and hang loosely into the lower parts of the channels g which are made of considerable depth in their parts below the eccentric to receive and hold the necessary quantity of lubricant.

The mold-plate E and its flange E are made, as shown, of an integral casting, which extends across the front of the machine and has bearing against the oblique guide-surfaces a on the frame-standards, the bearing-surfaces which rest against said guide-surfaces being formed on the rear face of the flange E, as clearly seen in Fig. 6. To hold thesaid casting in position against the guide-surfaces a, the frame-standards are provided with inwardly-extending oblique guide-ribs a,which are engaged by means of holding-plates E bolted to the rear face of the flange E, as seen in Figs. 3 and 6, and which extend around the inner and rear faces of said guide-ribs. At the ends of the mold-plates E and flange E said parts are provided with end flanges E which form the end walls of the'trough or receptacle, the bottom and rear walls of which are formed by the mold-plate E and its flange E. The mold-recesses ee are arranged in alinement with the plungers F, which are adapted to enter the same in the act of compressing the material within said mold-recesses. The flange E is preferablyarranged parallel with the said plungers F, and the lower edge of the said flange is located closely adjacent to the mold-recesses e e, so that material deposited in the angular receptacle formed by the mold-plateE and said flange E tends to fall by gravity into the angle formed between said plate and flange and will thereby be brought into position to enter the mold recesses when the plungers are withdrawn upwardly from or out of the same, it being understood that portions or charges of such material are carried by the plungers into the mold-recesses in the advance movement of the said plungers and that said plungers are drawn upwardly to a considerable distance above the top surface of the moldplate, so that the material may fall beneath the ends of the plungers and will be forced by the latter into the mold-recesses as the plunger-s advance toward and into the latter. To increase the capacity of the receptacle formed by the mold-plate and the plate E,

a plate or casting E having end walls 6 is attached to the outer edge of the mold-plate E and to the end flanges E said wall E extending outwardly and being curved upwardly, so that it forms, in effect, a flange on the upper edge of the mold-plate E.

In the case of a machine having onlya few mold-recesses and plungers material delivered into the receptacle formed by the mold plate, the flange E, and the front plate E will fall by gravity into the molds; but when a considerable number of mold-recesses and plungers is employed I provide a conveyer or device for moving or carrying the material which is delivered to one end of the said receptacle in a direction endwise of the said receptacle to the several mold-recesses. A feed-spout R is shown in the drawing Fig. 2 as a means of delivering material to the said receptacle. The conveyor illustrated consists of a horizontal spirally-bladed conveyer-shaft M, which is mounted at its ends.

in bearing-apertures formed in the end walls 6 and which is preferably provided with a continuous spiral conveyerblade m. Devices are provided for driving said shaft M from the counter-shaft of the machine, which are so constructed that the actuation of the shaft will not be interfered with by the bodily-reciprocatory movement of the mold-plate and parts connected therewith. The driving devices herein illustrated for this purpose consist of a belt-pulley Mon one end of the shaft M and a driving-belt M which is trained over any suitable driving-pulley, and two idlers M which are located on the outer face of the frame-standard A and are so arranged that the parts of the belt which lead from the pulley M to the idlers are'substantially perpendicular to the guidefaces a on the said frame, so that the movement of the said shaft will not appreciably increase or decrease the lengths of the parts of the belt between the pulley M and the said guide-pulleys. ,At the end of the mold-plate remote from that to which the material is delivered by the spout R is located an exit-passage R, which is formed in the end wall or flange E of the receptacle and toward which the material de livered to the receptacle is carried by the conveyer therein. Said exit-passage is shown as extended outside of the flange by a sheetmetal spout T, which extends downwardly and rearwardly along the outer surface of the end flange E and is open at its rear or lower end for the escape of the material which passes therethrough from the receptacle. The purpose of the exit-passage R is to permit the escape from the receptacle of material delivered thereto in excess of that needed for filling the molds and which is carried past the molds by the conveyer, itbeing obvious that in the absence of a means of escape such surplus material would accumulate in the end of the receptacle toward which the conveyer carries it. To insure always a suitably-abundant supply of material to the molds, the material will be fed to the receptacle at a rate somewhat faster than required for filling the molds, the surplus material passing out through the passage R and being conveyed back'to the feeding devices.

The mold-recesses are herein shown as provided with hard-metal lining-sleeves e. Said sleeves are fitted accurately in apertures formed in the mold-plateto receive them and are made larger in exterior diameter at their upper than at their lower parts and provided with downwardly-facing shoulders, which engage corresponding shoulders formed in the apertures of the mold-plate. Provision is made for holding said lining-sleeves accurately in place or from rising out of the said recesses in the backward movement of the plungers, consisting of holding-bolts e arranged at an angle to the sleeves and having rectangular heads at their upper ends, which are inclined or beveled on their front and nuts on their lower ends by which they are held in place.

For giving reciprocatory motion to the moldplate E devices are provided as follows: J designates a transverse rock-shaft arranged parallel with the crank-shaft D and journaled in suitable bearings in the side frame-standards A near the lower ends of the latter, said shaft in the particular instance shown extending through a passage or chamber formed in the rear orinner wall of the box A. ends of said shaftJ extend beyond the outer faces of the frame-standards, and said shaft is provided at the side of the machine adjacentto the gear-wheel O with an upwardly-extending rigid arm or lever J, which reaches to a point opposite to the shaft B and is adapted for engagement at its ends with a cam-groove 0, formed on the inner face of said gear- Wheel. The said arm is shown as provided with a laterally-extending stud having a bearing wheel or roller j, adapted to travel in said cam-groove. J 'J designate rock-arms rigidly attached to said rock-shaft at the outer faces of the frame-standards and which extend outwardly or forwardly from the shaft, as clearly shown in Figs. 1, 2, '4, and 8. Said rock-arms are connected with the mold-plate The by means of connecting bars or links J pivoted to the forward or free ends of said rockarms and connected at their upper ends with the ends of the mold-plate through the medium of studs j j, which are attached to or inserted in depending lugs J bolted to the under side of the mold-plate near the ends thereof.

It follows from the construction above described in the mold-plate-actuating devices that when the shaft J is rocked through the medium of .the arm J and the cam-groove C it will cause the mold-box, mold-plate, and connected parts to reciprocate toward and from the ends of the pistons I I, which close the outer ends of the mold-recesses. The configuration of the cam-groove and the relative movement of the cam and crank-shaft and the parts operated by the same are shown more clearly in Figs. 2 and 3. Said camgroove comprises a part concentric with the shaft B, which extends from 0 to c, an inwardly-deflected portion extending from c to 0 and an outwardly-deflected portion extending from c to 0.

Referring now to the several positions assumed by the main parts above referred to in the operation of the machine, when the molds are open for the admission of the material thereto the mold-plate will be at the limit of its downward movement,with the pistons I I occupying the outer ends of the mold recesses, and the plungers F B will be withdrawn from the mold-recesses and at or near the upper limit of their movement. This will be the position of the parts at the beginning of the compression-stroke of the plunger. As the eccentric-shaft and connected cam-groove rotate the plungers, through the medium of the eccentric will be moved downward through the mass of pulverulent material resting on the mold-plate and force portions of the same into the mold-recesses, wherein the same will be compressed between the plungers and the pistons which then rest within the lower ends of the said mold-recesses. During this time the roller on the actuatingarm J of the mold plate will be passing through the concentric portion of the camgroove, and it is obvious that so long as said roller is engaged with said portion of the camgroove no movement of the mold-plate will occur. Such concentric portion of the camgroove is made of such length that the roller j will be engaged therewith during the entire forward movement of the plungers. In the several figures of the drawings the parts are shown in the positions which they occupy at the end of the compression stroke of the plungers. From said drawings it will be seen that the bearing-roller of the actuatingarm J is at this time just about to'pass from the concentric to the inwardly-deflected portion of the camgroove, so that as the action of the eccentric begins to draw the plungers upwardly the cam-groove, through its action on the arm J, will begin to move the moldplate upwardly, so that the mold plate is moved upward with the plungers and for a short time at about the same rate of speed as the plungers. Further movement of the cam moves the mold-plate upwardly at a rate faster than the movement of the plungers, so that by the time the roller reaches the end of the said inwardly-deflected portion of the cam-groove said plungers will have been separated from the ends of the pistons and also caused to project through the outer ends of the mold-recesses. The plungers will by these movements of the parts operate to force the molded .blocks from and clear of said moldrecesses. After the blocks have been ejected from the mold-recesses the bearing-roller of the actuating-arm J will pass from the inwardly to the'outwardly deflected portion of the cam-groove, and the mold-plates will then move downwardly,while the plungers are being further retracted until the parts again reach the position for the delivery of the material to said mold-recesses.

To provide means for positively limiting the downward movement ofthe mold-box at the extreme forward limit of its throw, the lugs J are extended downwardly or made long enough to reach to the top surface of the guide-plate A so that they will bear against the same when the mold-plate is at the downward limit of its movement or at the time of greatest compression. It will be obvious that if such means for limiting the advance movement of the mold-box were omitted the frictional engagement of the material in the mold-box with the walls thereof would tend to produce movement of the mold-box with the plungers, and thereby prod uce very heavy strains upon the actuating devices for the mold-plate, including the lever-arm J and the cam operating the same. Such strains would manifestly cause the cam to produce unequal wear and looseness in the operative parts. By the employment of the extension of the lugs J or othersuitably-arranged stop projections on the mold-plate, adapted to engage a fixed part of or upon the frame beneath the plate, the latter is held positively from advance movement during the forward motion or compressing stroke of the plungers, and bringing of objectional strains upon the mold-plate-actuating devices is thereby avoided. The lugs J are shown as provided at their lower ends with cushion-pieces j, of leather or rubber, which are adapted for contact with the plate A and serve to prevent shock or jar when the said lugs strike the said plate A in the descent of the mold-plate.

As hereinbefore stated, the pistons I I, which close the outer ends of the molds, are supported on the machine-frame by means of springs K K, so that said plungers are adapted to yield, in the direction of their length under the pressure of the plungers on the these are made as follows: The hollow casting or box A has integral bottom, front, and rear walls, while the upper margin of its rear wall is extended forwardly over the box to afford support for the transverse bearingplate A which latter is bolted to the forward edge of the said rear wall, as clearly seen in Figs. 3 and 8. A space or opening is left between the plate A and the front wall of the box A to afford access to the parts within said box. Such opening will preferably be provided with a hinged top or cover S to prevent access of dust or dirt to the parts within saidbox. The springs K K are arranged in pairs and in such manner that one pair acts on each piston, one spring of each pair being located at the rearand the other at the front of the center line of the box. One of the yokeplates L- L is arranged to bear upon the top of each pair of springs, said yoke-plates extending transversely of the box or from front to rear thereof. The springs K K are made of spiral form, and each spring is made considerably larger in. diameter than the distance between the central axes of the pistons. The springs of the alternate pairs of springs are located at difierent distances from the center lines of the box, and the yoke-plates L are longer than the yoke-plates L, the pairs of springs being arranged in such manner that the springs K K, which are engaged by the yoke-plates L, are arranged at some distance apart and adjacent to the front and rear walls of the box, While the springs K K, which are engaged by the yoke-plates L, are arranged adjacent to each other and adjacent to the center line of the box, this arrangement of the parts giving room for the several springs, as clearly seen in the plan view in Fig. 9. To prevent interference of the longer yoke-plates L with the springs K K, which project at their sides beneath the same, said yoke-plates L L are cut away at the central parts of their lower edges, as clearly seen in Figs. 3 and 4, so as to leave downwardly-projecting ends adapted for enagement with the springs K K and so that the central portions thereof will be above the level of the upper ends of the intermediate springs K K. The bottom wall of the box A is provided with transverse ribs 0. a by which the springsare held in position or preupward movement of the 'pistons' I and to prevent the same being thrust upwardly through their bearings in the bearing-plate A said pistons are provided at their lower ends with heads 1', which are located between the plate A and the tops of the yoke-plates and form stop-shoulders on the pistons.

The purpose of providing separate yielding backing-springs for each piston, as described, is to enable the several briq'uets compressed at one time in the separate molds to be given the required degree of pressure, so that the material in all the molds will be suitably compressed, notwithstanding the fact that one mold may contain ,a slightly greater amount of material than others, it being obvious that in the mold containing the greater amount of material the yielding piston closing its outer end will when pressure is brought thereon yield downwardly and allow the material in the other molds to receive the-proper amount of pressure, notwithstanding the fact that the several plungers are rigidly connected with each other and with the eccentric which actuates the same. One important advantage gained by the employment of springs arranged as described is that the necessary number of springs may be employed without occupying too great a vertical space in the bottom or lower part of the machine, it being obvious that by making the box which contains the springs of considerable width and providing the yoke-plates L and L to operate in connection with said springs a plurality of springs may be arranged to operate on each piston. The drawings show two springs as applied to act on each piston; but manifestly a greater number may be employed and arranged in the same manner as hereinbefore' set forth.

To provide means for increasing or decreas ing the tension of the springs K K, one or more spacing plates or shims z" t are inserted between the lower end of each piston and its yoke-plate, the same being herein shown as inserted in grooves or recesses formed in the upper faces of said yoke-plates, as clearly seen in Figs. 3 and 4. By placing a greater or less number of said shims t" 71 between the lower ends of said pistons and the yoke-plates or by using shims of greater or less thickness the springs will be held compressed to a greater or less degree when the pistons are at the upward limit of their movement, so that said springs will be held under greater or less tension and will press upwardly with greater or less force against the pistons according to the number or thickness of the shims '12 i which may be used. The adjustment of the tension of the springs K K in the manner described obviously provides for giving a greater or less pressure upon the ment.

To provide means-for adjusting the length IIO ment.

of the pistons I, or, in other words, the distance from the forward or working ends of the said pistons to the bearing-plate A in which the said pistons are held, I provide between the heads t' on the pistons and the under surface of the bearing-plate A shims or plates i i, which may be varied in number and thickness, so as to bring the several pistons in the desired positions when the same are at the upward limit of, their move- Said shims i i may be made in any desired, manner; but, as preferably constructed, the same consist of plates arranged to extend across the machine, so as to operate in connection with all of the pistons. As shown in the drawings, Figs. 11, 12, 13, and 14:,the shim or plate i is provided with a series of holes for the passage of the pistons, and the plate 1' has a series of notches and prongs which extend between the pistons, so that the said plate i may be easily removed by withdrawing it outwardly or laterally from its place between the heads '5 and the bearing-plate 'A By the adjustment provided between the heads dot the pistons and the bearing-plate A and between the yokeplates and the pistons two results are attained. If the pistons be adjusted in the bearingplate A by adding or removing one or more of the shims t t or inserting shims of greater or less thickness, this adjustment of the pistons will result in a larger or smaller quantity of material being inserted in the moldrecesses by the action of the plungers and a correspondingly larger or smaller block or briquet being produced, and if it be desired to change the tension of the springs, so as to make the pressure on the material in the mold-recesses greater or less at the time of greatest compression, then one or more of the plates or shims 11 71 may be removed or inserted. It follows from the above that by the use of the construction described provision is made for an increase or decrease of the size of the blocks or briquets formed by compression in the mold-recesses and provision is also made for varying the tension of the springs to give greater or less pressure at the time of maximum compression. Moreover, the adjusting devices provided for changing the length of the pistons I aiford a means for compensation or adjustment in case of wear of the parts or in case it shall become necessary to refinish or resurface the ends of the pistons if the same become imperfect or rounded at their edges by wear.

To provide means for excluding dust from the eccentric, the pitman G, and the bearings between the pitman and cross-head, I provide a construction as follows: Said cross-head has the form of a troughshaped casting, of which the front and rear margins are higher than the central part, at which the pivot-pin G is located, the trough-shaped form, as herein shown, being given to the cross-head by means of the end flanges f and the for- 'f f thereof.

wardly and real-wardly directed side flanges The front and rear margins of said flanges f f are extended to bring them flush with the front margin of the upper part of the frame-upright A and with the rear surfaces of the plates F Thefront margins of the frame-upright A in their parts adjacent to the cross-head are, moreover, made parallel with the cross-head guides, and a sheet-metal hood or covering N is extended over and between the rounded upper ends of the frame-plates A, as clearly seen in Figs. 3 and 4. The lower front marginal part N of said cover N is secured to the inclined front edges of the frame-bars adjacent to the forwardly-projecting flanges f of the crosshead, and the said lower marginal part N of the cover is flat and extends across the machine in front of and in contact with the front margin of the flangef ,so as to form a flat bearing-surface, against which said flange moves or slides in the reciprocatory movement of the cross-head. A tight jointis thus formed between the cross-head and the cover N at the front of the machine. At the rear of the cross-head said cover N is extended downwardly and inclined to correspond with the inclination of the cross-head guides and is provided with a flat part N which extends across the machine-frame and between the uprights A, so as to come in contact with the rear edge of the flange f said lower part N forming a fiat bearing-surface for contact with the said rear edge of the flange f so that a tight joint is maintained between these parts at all times during the reciprocatory movement of the cross head. The trough-shaped form given to the cross-head by the end wallsf and inclined front and rear end flanges f f thereof affords a receptacle adapted to receive a liquid lubricant, by which the crank-pin G is constantly kept lubricated during the operation of the machine.

The ends of the eccentric-shaft B instead of engaging directly the bearing-apertures in the frame standards or uprights A are mounted in bearing-sleeves B which sleeves are made somewhat larger in diameter than the eccentric B and are fitted and secured within cylindric apertures in the frame-plate made of proper size to receive them. This construction has the advantage of enabling the eccentric-shaft to be readily removed from the frame, it being obvious that by first taking out the sleeves B the eccentric-shaft,with the eccentric, may then be removed endwise through the aperture in one of said framestandards.

Provision is made for securing the plungers to the cross-head and adjusting the position of the plungers with respect to said cross-head as follows: Said cross-head is provided with a flat lower bearing-face, and secured to the same is a bar H, which extends lengthwise of the cross-head below the same and is provided with a plurality of bearing-apertures h to receive the several plungers F. Said plungers are made of cylindric form and preferably of the same diameter throughout their entire length, and the upper cylindric ends of the plungers enter the bearing-apertures h and bear or abut at their'upper ends against the bottom surface of the cross-head. For securing the several plungers in the bar H devices are provided, as shown more clearly in Figs. 15 and 16, asfollows: Between each pair of adjacent plungers is formed in the bar H a transverse aperture h, which is smaller at one side of the bar than at the other, said recesses or apertures opening at either side thereof into the apertures h for the plungers. I11 said apertures are placed clam ping-wedges H, to the smaller ends of which are connected stems k which extend through the smaller ends of the recesses. To the outer ends of said stems are applied nuts 7L3. The oppositely beveled or inclined side faces of the wedges H are adapted to bear against the inner or adjacent faces of the two .plungers between which the wedges are placed, so that when the said wedges are drawn outwardly by the nuts k the plungers will be firmly clamped of the mold-plate.

in the bar H. To provide means for adjusting the plungers endwise with respect to the cross-head, the bar H is provided in its upper surface with a longitudinal groove H Figs. 3, 4, and 16, and in said groove between the upper ends of the plungers and the lower face of the cross-head are placed plates or shims The longitudinal groove or recess H opens through the ends of the bar H, so that said plates maybe removed and inserted when desired, and said recess is made of such depth as to receiveany number of shims or plates or plates of any thickness that may be re quired in adjusting the plungers. The bar H shown in the drawings is bolted to the cross-head and is arranged to project downwardly past the upper edge of the flange E To prevent interference of the said casting with the material in the mold-plates, the front surface thereof is beveled or inclined rearwardly and downwardly, as clearly shown in Fig. 3. Moreover, to pre vent the entrance of material between the said bar H and the flange E, said bar is provided witha flexible strip hflwhich is attached to its rear, or inner face and bears at its free lower edge rearwardly against the outer face of said plate E. Endwise adjustment of the plungers with respect to the cross-head may be required to compensate for wear in the parts of the machine, and such adjustmentalso enables the degree of compression ap plied to the material in the mold to be increased or diminished without disturbing the pistons I I.

In addition to the means provided for ad justment of the pistons and plungers provision is also made for adjusting the mold-plate, so that the position of the said mold-plate with relation to the pistons and plungers may be varied without the necessity of changing the adjustment'of the latter. As shown in the principal figures of the drawings, Figs. 1

to 4, such adjustment of the mold-plate is afforded through adjusting means interposed between the lugs J J and the mold-plate, adapted to enable the said mold-plate to be raised or lowered with respect. to the. said lugs, the latter in the construction shown affording the connecting means between the mold-plate and the studs jj, to which are pivoted the links J J of the mold-plate-opcrating devices. The adjusting meansillustrated consists of plates or shims J J, interposed between the top surfaces of the lugs and the bottom surface of the-mold-plate. By

introducing shims of different thickness or by employing a greater or less number of the same the mold-plate may be adjusted up or down to a desired extent. The mold-plateactuating devices may, however, be provided with adjusting means for the mold-plate located elsewhere than as shown in said Figs. 1 to 4 and at'any desired point between the actuating-shaft from which the mold-plate is driven and the mold-plate itself. Adj ustment of the mold-plate may, for instance, be provided for through lateral adjustment of the rollerj on the arm J, the efiect of such adjustment of the roller on the arm being obviously the same as that produced by the use of the shims J of varying thickness between the lugs J J and the mold-plate. In Figs. 17 and '18 are shown means for adjusting said roller on the arm, as follows: The arm J is provided with a transverse slotj having parallel sides, and the roller j is mounted on a bearing-study, which extends through said slot and is provided withopposite fiat parallel faces, which have sliding engagement with the opposite sides of the slot. The stud 9' is provided with a wide flange 7' which bears against the flat face of the arm J at the side thereof adjacent to the roller, and a wide Washerj is secured by a screwj to the end of the stud and bears against the opposite flat side of the arm, said flange and washer serving to hold the stud rigidly at right angles to the arm. For moving or shifting the stud on the slot and holding it in its adjusted position set-screws j j are inserted through the arms at opposite ends of the slot and are adapted to bear endwise on the stud.

Adjustment of the mold-plate by the use of the devices last above described or through the placing of thicker or thinner spacingplates between the lugs J J and the mold- 'plate has the effect of changing the position of the top surface of the mold-plate with respect to the working ends of the pistons and plungers, with the result that a greater or less quantity of material will be contained in the mold-recesses at the time the ends of the plungers reach and enter the same in their descent, and the degree of compression to which the briquets are subjected will be correspondingly varied. Manifestly if the effect of the adjustment is to lift the mold-plate its top surface will be raised to a greater distance above theworking ends of the pistons and the molds will be deeper and contain a larger quantity of material at the time the plungers enter the mold-recesses and compression begins. Similarly,iftheefiectoftheadjustment is to lower the mold-plate the working ends of the pistons will be nearer the top of the plate and the mold-recesses will be shallower and contain less material at the beginning of the compressive action of the plungers.

While the same general result that is attained by the adjustment of the mold-plate may be obtained by the adjustment of both the pistons and plungers vertically in one direction or the other, yet the provision for separately adjusting the mold-plate is of considerable practical importance, because enabling the mold-plate to be so adjusted as to receive a desired quantity of material without affecting the adjustment of the pistons and plungers after the same have been properly adjusted in view of other requirementsas, for instance, supposing the pistons and plungers to have been adj usted' to give a desired degree of compression in acting on a briquet of a certain thickness, then the mold-plate may be separately adjusted to so change the capacity of the mold-recesses at the timeof.

delivery of the material thereto that the mold-recesses will receive the quantity of material required for producing a briquet of the thickness called for.

To provide means for removing from the ends of the plungers the bri-quets formed by compression in the molds, and which are in some cases liable to stick to the said ends of the plungers after they have been forced out of the mold-recesses, a knocking-off device is provided, as follows: 0, Figs. 3, 4, and 7, is a laterally-sliding plate mounted on the lower surface of the mold-plate E, so as to slide backwardly and forwardly thereon. Said plate 0 is herein shown as held or guided at its ends in grooved supporting-plates O', which are bolted to the lower face of the mold-plate -near the ends of the frame.

strike the briquets to dislodge them from the ends of the plungers. In the particular construction shown and illustrated in Fig. 7 the plate 0 is extended to form projections or prongs between the mold-recesses and has between said prongs semicircular notches. Provision is made for giving backward and forward movement to the said plates 0, as follows: A rock-shaft O is mounted horizon tally in lugs o 0 on the casting E and extends across the front of the same. Said rock-shaft is provided with depending arms 0 connected by rods 0' with said plate 0 near the ends of the same, said rods 0 being pivotally connected with the said arms and with-the edge of the plate. The plate 0 is held normally at the outward limit of its movement and out of the path of the plungers by means of springs O 0 which in the instance shown are located between the arms 0 and lugs 0 on the casting E and act by expansion on the arms 0 in a manner to throw the same outwardly. For actuating the rock-shaft O in a manner to move the plate 0 against the action of the springs O 0 said rock-shaft is provided at one end with a rigid outwardly extending crank-arm O to which is pivoted an operating-rod 0 which extends downwardly toward the base of the machine and at its lower end is engaged with a guide-aperture in a bracket 0 which is herein shown as cast upon and as projecting outwardly from the front Wall of the box A. On the rod 0 below the bracket 0 is a stop or collar, formed in the instance shown by means of a nut 0 and ajam-nuto applied to the screw-threaded lower part of the rod. The rock-shaft o partakes of the reciprocatory motion of the mold-plate, and the not 0 on the rod 0 is arranged in such'position that in the upward movement of the mold-plate the nut will strike the bracket 0 and by arresting the movement of the actuating-rod O draw downwardly the free end of the crank-arm O and thus rock or turn the shaft 0 so as to carry the connecting-rods 0 inwardly, and thus move the plate 0 into the path'of the plungers. This will occur each time the moldplate rises and the plu ngers are carried through the mold-recesses to eject the finished briquets therefrom.

Provision is made for delivering or carrying away the finished briquets from the machine, as follows: P indicates as a whole a traveling belt-carrier, consisting of a plurality of separate ropes or strands pp. Said carrier extends across the machine at the rear of and somewhat below the mold-plate. The ropes or strands of the carrier are trained over a pulley P, which is mounted on the forward end of a horizontal shaft P and is provided with a plurality of grooves to receive the strands or ropes p 10. Said ropes pp lead horizontally from the pulley P and across the machine past the frame-plate A opposite the side of the machine at which the pulley P is located, the ropes being trained over another grooved pulley located at the point at which it is desired to deliver the finished briquets as they come from the machine. The pulley P and the corresponding pulley over which the ropes p p are trained are so located as to bring the upper laps of said ropes adjacent to and somewhat below the level of the mold-plate, or, in other words, so as to bring said upper lap of the carrier in position to receive the finished briquets as they are ejected from the mold-recesses through the action of the plungers. To insure the holding of the finished briquets upon the traveling carrier,the ropes or strands 4 thereof areplaced so close together as to prevent the finished briquet from falling therethrough or between the same. The beltpulley P is also made of concave form, or larger at its ends than at its middle part, so as to give a trough shape to the conveying or supporting surface of the carrier formed by the upper laps of the several ropesp p. Inasmuch as the outermost rope p on the larger part of the pulley P travels faster than the intermediate ropes the briquets resting upon the traveling carrier will tend to remainat the center or upon the slovwmoving portion of the carrier. The shaft P is shown as mounted in bearings P P, attached to the inner face of onset the frame-standards A. To provide for driving or actuating the shaft P, a driving connection is provided between the same and the counter-shaft D of the machine, which in the particular instance shown embraces a vertical or upright shaft Q, which is mounted in a bearing-sleeve q, connected with one of the frame-standards by a bracket q. The shaft Q is arranged in the same vertical plane as the shaft P and said shafts are provided with intermeshing gear-pinions 10 and g located at the rear of the framestandard upon which the shaft Qis supported. At its upper end the shaft Q is arranged adjacent to the inner end of the counter-shaft D, and on the upper end of the shaft Q and adjacent end of the shaft D are located intermeshing beveled gears d and g Fig. 5.

Instead of employing the device described for affording driving connection between the counter-shaft and the shaft P said shaft'P? may be driven by means of any other suitable driving connections. 1 At the base of the machine and extending transversely thereof is an open-topped trough T, (shown in Figs. 2 and 3,) within which is located a conveyer T, which latter is preferably located below the level of the frame standards, so that the material in thetrough may be carried by the conveyor beneath one of the said standards; The trough T is arranged in position to receive all material falling from or through the carrier P-and also that which may pass from the receptacle over the mold-plate through the exit-passage R and spout r. The conveyer T will bearranged to deliver all material which falls into the trough to a receptacle, from which the same may be returned to the spout R and again delivered to the machine. In the particular construction illustrated the carrierP is located over the rear part of the box A, so that the fragments of broken or imperfect briquets which fall between the strands of the carrier will descend upon the rearwardlyinclined top surface of said box, the trough T being in this instance located beneath the rear margin of the said box and in position to receive all material which may fall upon and slide rearwardly from the same.

I claim as my invention- 1. A molding-machine comprising a recipe rocating plunger, and an inclined niold-plate provided with a mold-recess located near its lower edge; said mold-plate being provided with an inclined flange which rises from its lower edge below the open upper end of the mold-recess and forms with the inclined top' surface of the mold-plate a receptacle for the material to be molded through which the plunger passes and which is adapted for the gravitation of the material therein deposited toward the mold-recess. A.

2. A molding-machine comprising an inclined reciprocating plunger, and an inclined mold-plate provided with a mold-recess and vided with an inclined flange which rises from its lower edge. below the open upper ends of the mold-recesses and a flange which rises reciprocating plungers, and an inclined moldplate provided with a mold-recess located near its lower edge; said mold-plate being provided with a flange which rises from its lower edge below the open upper end of the mold-recess and is inclined to correspond with the inclination of the plungers, said flange forming with the inclined top surface of the mold-plate a receptacle for the material to be molded, through which the plunger passes and which is adapted for the gravitation of the material therein deposited toward the mold-recesses.

5. A molding-machine comprising a machineframe, inclined reciprocating plungers, an inclined mold-plate which reciprocates in an inclined path, and which is provided with mold-recesses and with an inclined flange which rises from its lower edge and IIO forms with the mold-plate a receptacle for the material to be molded, and inclined pistons for closing the lower ends of the moldrecesses, said pistons being yieldingly mount- ,ed in the machine-frame.

cess near its lower edge, and with an inclined flange which rises from its lower edge and forms, with the mold-plate, a receptacle for the material to be molded, said mold-plate being adapted to reciprocate in a path which is inclined to correspond with the inclination of the plunger, and an inclined piston for closing the outer end of said mold-recess, located in alinement with the plunger and moldrecess, and which is adapted to yield endwise.

7. A molding-machine comprising a machine-frame provided with two frame-siandards, inclined reciprocating plungers, a crosshead which moves in an inclined path at the upper part of said frame-standards and which carries said plungers, a mold-plate provided with a mold-recess located near its lower edge and having an inclined flange which rises from its lower edge and forms with the moldplate, a receptacle for the material to be molded; said machine-frame standards being provided with inclined guides on which the said mold-plate slides, and a piston for closing the outer end of the said mold-recess, said I piston being movably and yieldinglysupported on the machine-frame.

8. A molding-machine comprising a machine-frame, a mold-plate provided with a plurality of mold-recesses, a plurality of reciprocating plunger-s arranged to enter said mold-recesses, pistons for closing the outer ends of said mold-recesses, a guide-plate on the machine-frame in which the said pistons are adapted to slide endwise, said pistons having stop-shoulders to limit their movement in said guide-plate toward the moldplate, a spring for each piston located between the end of said piston and an opposing bearing-surfaceon theframe,adjusting means located between the stop-shoulders and the guideplate for controlling the position of the Working ends of the pistons with respect to the mold-plate and plungers, and adjusting means located between the springs and the pistons for adjusting the tension of the springs.

9. A molding-machine comprising a reciprocating mold-plate provided with a mold-recess, a reciprocating plunger adapted to enter said recess, a piston for closing the outer end of said mold-recess, said piston being mounted to slide endwise in the machineframe and having a stop-shoulder by which its movement toward the mold-plate is limited, a plurality of backing-springs for the piston which rest upon a bearing-surface on the machine-frame,'and a yoke-plate interposed between said springs and the pistons, said yoke-plate being made separate from and adapted to bear against the end of the piston.

10. A'molding-machine comprising a ma chine-frame, a reciprocating mold-plate provided with a mold-recess, a piston for closing the outer end of said mold-recess, said piston being mountedto slide endwise on the machine-frame and being provided with a stopshoulder to limit its movement toward the mold-plate, a plurality of spiral springs interposed between a part of the frame and said piston, a yoke-plate interposed between said springs and the end of the piston, and means located between the yoke-plate and the piston for adjusting the tension of said springs.

11. A molding-machine comprising a reciprocating plunger, a reciprocating mold-plate provided with a mold-recess, a piston for closing the outer ends of said mold-recess, said piston being mounted to slide end wise on the machine-frame and having a stop-shoulder by which its movement toward the mold-plate is limited, a plurality of springs interposed between a part of the frame and the end of said piston, a yoke-plate interposed between the said springs and the end of the piston, and a shim or shims interposed between the end of the piston and said yoke-plate, whereby the tension of said springs at the time of compression may be varied.

12. A molding-machine comprising a plurality of reciprocating plungers, a reciprocating mold-plate provided with a plurality of mold-recesses, pistons for closing the outer ends of said mold-recesses, said pistons being mounted to slide endwise on the machineframe and being provided with stop-shoulders to limit their movement toward the moldplate, a plurality of springs applied between a part of the machine-frame and the end of each of said pistons, yoke-plates interposed between said springs and said piston and shims interposed between said yoke-plates and the ends of the piston for separately adjusting the tension of the springs.

13. A molding-machine comprisinga reciprocating plunger, a reciprocating mold-plate provided with a mold-recess, a piston for closing the outer end of said mold-recess, said piston being mounted to slide endwise on the machine-frame and being provided with a stop-shoulder to limit its movement toward the mold-plate, a backing-spring interposed between said piston and the machine-frame, a shim or shims applied between said stopshoulder and a part of the machine-frame for limiting the advance movement of the piston under the action of said springs, and a shim or shims interposed between said yoke-plate and the piston for adjusting the tension of the spring. .n

14. A molding-machinecomprising a machine-frame having two frame-standards, a plurality of reciprocating plungers, a reciprocating mold-plate provided with a plurality of mold-recesses, pistons for closing the moldrecesses, a stationary guide-plate provided with guide-apertures for said pistons, a plurality of backing-springs for each piston, said springs being of coiled form and arranged side by side on a supporting-surface on the machine-frame, a plurality of yoke-plates interposed between the springs and the ends of the pistons which project beyond the guideplate, said yoke-plates being parallel with each other and each of the same being adapted to bear on a plurality of said springs, said springs being larger in diameter than the dis tance between the centers of the pistons and the springs which act on adjacent yoke-plates being located out of lateral alinement with each other and arranged in overlapping re-. lation.

15. A molding-machine comprising a frame having frame standards or uprights, a crosshead mounted to slide on the upper parts of said standards, plungers attached to said cross-head, a. reciprocating mold plate cated below the cross-head and also mounted to slide on said frame-standards, said moldplate being provided with a plurality of moldrecesses, a plurality of pistons for closing the mold-recesses, a guide-plate for said pistons, a plurality of backing-springs for each piston, yoke-plates interposed between the ends of the pistons and said springs, and a box for said springs located between the lower ends of the frame-standards, one wall of said box being extended over the same to form a support for the said guide-plate; said springs being arranged side by side in contact with the bottom wall of the box, and the said yokeplates being arranged parallel with each other between the end walls of said box.

16, A molding-machine comprising a moldplate provided with a plurality of mold-recesses, arranged in a line or row, plungers adapted to enter the mold-recesses, said moldplate being provided with walls or flanges which form therewith a receptacle for confining the material to be molded adjacent to the mold-recesses, and a conveyer 'in said receptacle extending along the row of mold-recesses to distribute to the several mold-recesses the material fed to said receptacle.

17. A molding-machine comprising a moldplate provided with a plurality of mold-recesses arranged in a line or row, plungers adapted to enter said mold-recesses,said moldplate being provided with walls or flanges which form therewith a receptacle which confines the material to be molded adjacent to the mold-recesses,a spirally-bladed conveyorshaft located in said receptacle at one side of the row of mold-recesses and means for giving rotative movement to. said conveyer.

18. A molding-machine comprising a plurality of inclined reciprocating plungers arranged in a straight line or row, an inclined mold-plate provided with mold-recesses, said mold-plate being provided with walls or flanges which form therewith a receptacle for the material to be molded, and a rotative, spirally-bladed conveyer-shaft arranged longitudinally in said receptacle and extending at one side of the paths of the said plungers and of the mold-recesses.

19. The combination with a reciprocating mold-plate provided with flanges which formwith the mold-plate a receptacle for the material to be molded, a rotative conveyer which is mounted in and moves with said receptacle, adriving-belt for the conveyor, and idlers for the belt which are mounted on stationary bearings and are so located that the parts of the belt between the idlers and the conveyer extend substantially at right angles to the direction of the movement of the molds.

20. The combination with a mold-plate provided with a mold-recess, of a lining-sleeve for the mold-recess which is larger at one face of the mold-plate than at the other, and a holding-bolt arranged at an angle to the axis of the lining-sleeve; said bolt having a tapered head which engages the end surface of the larger end of said sleeve to hold the same in place in the mold-plate.

21. The combination with a mold-plate provid ed with mold-recesses, of plungers adapted to enter said mold-recesses, said mold-plate being provided with walls or flanges which form therewith a receptacle for confining the material to be molded adjacent to said recesses and with an exit-passage, and a conveyer in the receptacle acting toconvey the material therein to the several mold-recesses and toward said exit-passage.

22. The combination with a machine-frame, of a reciprocating mold-plate and plungers, a knock-off plate movably mounted on the moldplate, a rock-shaft mounted on and moving with said mold-plate, operative connection between the said rock-shaft and the said knock-01f plate, springs applied to hold the knock-0d plate out of the path of the plungers, a crank-arm attached to said rock-shaft and an actuating-rod connected with said crank-arm, said rod being provided with a stop adapted for contact with a part on the machine-frame so as to turn the rock-shaft at each reciprocation of the mold-plate.

23. The combination with a frame provided with frame-standards, of reciprocating plungers, across-head which slides on the framestandards and to which said plungers are attached, an actuating-shaft mounted inthe frame-standards above the cross-head, a pitman connecting the actuating-shaft with the cross-head, and a cover attached to the frame-standards and surrounding the crankshaft and pitman, said cover being provided with parallel, fiat, inner bearing-surfaces and the cross-head being provided with lateral flanges which extend outwardly to and have sliding engagement withv the said parallel bearing-surfaces of said cover.

24:. The combination with plungers, of a cross-head provided with apertures adapted to receive the ends of the plungers and having transverse passages located between the adjacent plungers, Wedges inserted through said passages and bearing on adjacent plungers, and means for forcing and holding said wedges against said plungers.

25. The combination with a mold-plate provided with a mold-recess and plungers of an endless traveling carrier embracing a plurality of separated strands, a receiving-trough front walls which extend between and are castintegral with the lower ends of said framestandards; the rear wall of said boX being extended at its upper edge forwardly over the box to form a support for said guide-plate.

27. The combination with an inclined reciprocating plunger, of a cross-head to which the same is attached, an inclined reciprocating mold-plate provided with a mold-recess and with a flange which rises from its lower margin and is parallel with the plunger, said cross-head being provided with an extension which overlaps the flange of the mold-plate and with a flexible strip which bears against the said flange to prevent the escape of material between the said parts.

28. The combination with a plurality of plungers, of a cross-head and means for securing the plungers to the cross-head comprising a bar secured to the cross-head and provided with a plurality of apertures to receive the ends of the plungers and with a longitudinal groove in its surface which is in contact with the cross-head and between its side margins which bear against the crosshead; said groove forming a passage between the bar'and the cross-head into which said apertures open at theirinner ends, clamping means for holding the plungers in said apertures, and a shim or shims adapted for insertion endwise into said passage between the ends of the plungers and the surface of the cross-head.

29. The combination with a reciprocating plunger, of a reciprocating mold-plate provided with a mold-recess, a piston for closing the mold-recess, a shaft from which the plumger and mold-plate are actuated, and connections between the said shaft and the moldplate embracing a cam on the shaft, a rockshaft, an arm on the rock-shaft engaging said cam and crank-arms on the rock-shaft connected with the mold-plate, said connections embracing adjusting means by which the position of the mold-plate with respect to the piston and plunger may be changed or adjusted.

30. A molding-machine comprising a machine-frame, a reciprocating plunger, a reciprocating mold-plate, and lugs attached to the mold-plate located'in position for contact with a stationary part of the machine-frame when the mold-plate is at the limit of its movement away from the plungers, and spacing-plates or shims interposed between said lugs and the mold-plate.

31. Amolding-machine comprising a machine-frame, a reciprocating plunger, a moldplate, means for giving reciprocating motion to the mold-plate, and lugs attached to the mold-plate and adapted for contact with a stationary part of the machine-frame when the mold-plate is at the limit of its movement away from the plungers, said lugs forming parts of the connections between the moldplate-actuating devices and the mold-plate, and spacing plates or shims interposed between said lugs and the mold-plate.

32. A molding-machine comprising a machine-frame, a reciprocating plunger, a moldplate, a rock-shaft provided with rock-arms, lugs attached to the mold-plate and provided with pivot-studs, links connecting the said rock-arms with the pivot-studs, means for giving motion to said rock-shaft, and shims or spacing-plates interposed between the said lugs and the mold-plate.

In testimony that I claim the foregoing as my invention I aflix mysignature in presence of two witnesses.

BRUCE CLARK WHITE.

Witnesses:

C. CLARENCE Poona, WILLIAM L. HALL.