US702941A - Squirt-preventer for type-casting machines. - Google Patents

Description

No. 702,941. Patented lune 24, |902. G. A. GODDSON.

SGUIBT PREVENTER FDR TYPE CASTING MACHINES.

(Application med Apr. 22, 1901i) (No Model.) 4 Sheets-Sheet I.

Patented lune 24, |902.

- G. A. Goonson.

SUUIRT PREVENTEB FOB TYPE. CASTING MACHINES.

(Application led Apr. 22, 1901.)

4 Shania-Sheet 2 (No Model.)

Zzwossas, J M17 26?,

C. b. N. o T G Nonms paens co. pHoro-Ln- No. 702,941. Patented lune 24, |902. G. A. GUUDSUN.

SUIRT PREVENTER FOB TYPE CASTING MACHINES.

(Application filed Apr. 22, 1901.) (No Model.) 4 Sheets-Sheet 3.

Patented June 24, |902.

No. 702,94I.

G. A. GDSON.

SllUlRT PREVENTER FOB TYPE CSTING MACHINES.

(Application led Apr. 22, 1901.)

4 Sheets-Sheet 4,

(No Model.)

UNrrED STATES PATENT OFFICE.

GEORGE ARTHUR GOODSON, OF NEW YORK, N. Y.

SQUlRT-PREVENTER FOR TYPE-CASTING MACHINES.

SPECIFICATION forming part of Letters Patent No. 702,941, dated June 24, 1902.

Application filed April 22,1901. Serial No. 56,871. (No model.)

ib f/,ZZ 7071/0771, it muy concern:

Beit known that l, GEORGE ARTHUR GOOD- SON, a citizen of Great Britain,residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Squirt-Preventers for Type-Casting Machines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to type-casting machines, and has for its object to provide certain improvements therein with a View of securing increased efficiency.

In type-casting machines the matrix and the body-mold are movable relative to each other, and when tightly clamped together in casting position the molten metal is forced into the mold-cell under pressure, which is usually done by a suitable pump. The matrix and the mold must be centered with great accuracy in casting position and must be tightly clamped together with a perfect joint between the matrix and the mold, or otherwise satisfactory results cannot be secured. If the matrix and the mold do not make a perfectjoint with each other,then when the pump is actuated to effect the cast the molten metal will be forced out at the open joint between the matrix and the mold with what the typefounders call a squirt or a slobben W'hen such a squirt or slobber occurs, the type of course will be imperfect and worthless, and the type-metal thus thrown out between the matrix and the mold must be cleared away from both before further successful casting of perfect type can be done. This is of course a serious limitation or objection to type-casting machines. Vhen the squirt or slobber occurs, the machine must of course be stopped to clear away the debris, and ofttimes loss is incurred not only in point of time as to the continuous action of the machine, but also as to type already made and set in a partial line, for example.

My invention has for its object to overcome this defect or limitation, and to this end I provide a lock for the pump which under the cooperative control of the matrix and the mold will become operative to lock the pump in au idle position, and thereby prevent any cast whenever the matrix and the mold fail to make a perfect joint when clamped together in casting position. Normally the lock is inoperative or idle and so continues as long as the matrix and mold make a perfect joint when clamped together in casting position; but if any obstruction-such as a broken type, chip of type-metal, or grain of sand--should happen to get interposed between the faces of the matrix-walls and the mold then it will be impossible for the clamping devices to bring the matrix and the mold into their normal or properly-jointed casting position, and the pump-lock will then become opera-tive to prevent any cast.

The invention was especially designed for use on what is known to the trade as the Goodson type casting and setting machine, which machine is disclosed in my various prior United States patents. Said machine is disclosedA most nearly in its commercial form in my prior patent, No. 609,098, of date August 16, 1898, and my invention herein disclosed, which I call squirt-preventer, is

disclosed as applied to the machine as disclosed in my said Patent No. 609,098.

. The invention is illustrated in the accompanying drawings, wherein like notations refer to like parts throughout the several views.

In said drawings, Figure l is a perspective View showing some of the parts of my type casting and setting machine with my present invention embodied therein. Fig. 2 is alongitudinal vertical section through the machine in a plane cutting the matrix-block, the mold, and the melting-pot. Fig. 3 is a detail, partly inv horizontal section and partly in plan, illustrating the devices which act from below to elevate the mold carriage or slide and the nipple carriage or s lide and to cooperate with the devices which act from above to clamp the matrix ,and the mold tightly together in casting position. Fig. Lt is a view in vertical longitudinal section in the same planeV as Fig. 2 and showing some of the same parts, but on a larger scale and in adierent position. Figs. 5 and 6 are details in elevation and cross-section, respectively, illustrating the adjustable fulcrumpin for the top lever of the squirt-preventer.

Fig. 7 is a detail in vertical section, taken crosswise of the machine on the line m7 :1:7 of

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. mal position.

Fig. 4, showing the pump-locking lever and some of the cooperating parts in their nor- Fig. 8 is a similar view, but showing the same parts as they appear when in pump-locking position. Fig. 9 is a'view similar to Figs. 7 and 8, but with the parts as they would appear when an excessive motion had been im parted to some of the parts of the squirt-preventer by an obstruction of unusual size coming between the matrix and the mold.

Before specifying in detail the parts of my squirt-preventer as herein discloseditis necessary to briefly note some of the operative parts of the old structure of the machine to which it is applied.

Paris of lmachine as disclosed n Patent No. 609,098, of August 16, 1898,-These old parts are marked with the same reference-notations as in said prior patent. The main frame a, of box-like form, has on its main bed-plate a central casting d4, on which most of the operative parts requiring notice herein have their bearings. In addition the bed-plate ct has a bracket ct to serve as a bearing for pump-lever fm, as will later appear. The constantly-running driving-shaft b is -provided with suitable cams, and of these it is sufficient for present purposes to consider two-to wit, the cams numbered l and 4 in said prior patent, and these only are shown in the drawings.

The type-metal is kept in a molten condition in a suitable meltingpot f', supported from a burner-bracketf2, which is insulated from the main frame of the macl1ine,as shown in Fig. 2. This melting-pot is located remotely from the mold, and the molten metal is conducted from the melting-pot to the mold through a metallic tube f3, which termina-tes in a nipple f4, adapted when in casting position to register with the lower end of the mouth or cellof the mold. This conductingtube f3 in practice is connected into an electric circuit (not shown) for the purpose of controlling the temperature of the molten metal and delivering the same to the mold in exactly the right condition.

In the melting-potf is located a suitable pump, the cylinder of which is marked and the pistonfo. The piston f1@ is connected by a pivoted plunger]11 to the horizontal arm of a bell-crank leverfg, which is pivoted to the bracket d10, hitherto noted. The said horizontal arm of said lever]C12 is made in two sections suitably insulated from each other, as shown in Fig. 2. An actuating-rod f14 is connected at its left end to the lower end of the bell-crank level-f1?, and at its opposite or right end itis provided with aroller f, which works ina profile cam-channel fw, formed in the front face of the cam-heel l. The right-hand or cam end of the rod f14 is shown as held up, Fig. 2, by a pivoted lever f The pump-lever f12 is also subject to the action of a strong springf, acting opposite to the cam. The cam and the connections described raise the pump-piston flo into its uppermost position and set the strong spring f17 under tension to throw the piston flo into its lowermost position whenever so permitted by the cam, thus giving the proper pump action to effect the cast.

The nipple f4 is carried by a slide or carriage f2?, mounted for vertical movement between guides f2s, fixed to an angular bracket or carriage g4, which in turn is mounted for vertical movement between guides ct, iXed to a vertical web of the central casting a4, as best shown in Figs. 2, 3, and 4. The nippleslide j2 is provided near its lower end with a rollerfo for cooperation with the inner end of a bell-crank cam-lever f 29. The cam-lever f29 is pivoted to the bed of the machine, as shown atfso, and the outer or long arm of the same extends to the cam-wheel t and is subject to a prole cam-surface f31 thereon and a cooperating spring fg, working opposite to the cam, as shown in Fig. 3. The nipple-slide f27 is subject to a spring fss for throwing the same downward whenever so permitted by the cam-leverf29. The tube]03 has sufficient spring to permit the limited upand-down motion of the nipple 4 under the action of the slide f.

The type-body mold is made up of several parts, of which the parts marked g2 and g3 are shown in the drawings. Of said parts g2 and g3 the pair of members g2 are laterally movable on the part g3, which is of angular form, for shifting from casting to ejecting positions by means not herein shown. When in casting position, the parts g2 and g3 coperate with the mold-plunger (not shown) to afford the mold-cell g. (See Figs. 2 and 4.) The angular member g3 of the mold is fixed t-o horizontal portions of the vertically-movable slide or carriage g4, hitherto noted as mounted for vertical movement between the guides ci and a vertical web of the casting (L4. At its lower end the mold-carriage g4 is provided with a roller gg, which is subject to the action of the inner or cam end of a bellcrank lever gl, pivoted to the bed-plate by the same pivot-pin f3 as the cam-leverflf, which operates the nipplecarriage f2?, as shown in Fig. 3. The outer or long arm of the cam-lever g7 extends to the cam-wheel et and is subject to a profile cam-surface thereon (not shown) and is also subject to a cooperating spring g to keep the lever against the face of the cam. The mold-carriage g4 is subject to a pair of springs gw, tending to throw the same downward into its lowermost position whenever so permitted by the cam -lever gi. As the angular member g3 of the mold is fixed to the horizontal arms of the carriage g4, the mold will of course be moved up and down with said carriage under the coperation of the cam-lever gT and the springs gw. Inasmuch as the nipple-slidej'27, hitherto noted, must move independently on the mold-carriage g4 under the coperation of its cam-lever f29 and spring f33, the lever IOO IIO

fl must have a limited rocking motion at its inner or cam end, which is secured by allowing a little lost motion at its joint with the pivot-pinfo. Theinner end of the cam-lever f2 works over a cross-piece g5, carried by the mold-carriage g4, and hence always occupies a proper position for cooperation with the roller f5 of the nipple slide or carriage f2? in all positions of the mold-carriage gt.

The up-and-down motions of the mold secured by the devices just hereinbefore described are to enable the mold to cooperate with the matrix-block 7L at an upper level when in casting position and to cooperate with the galley-floor (not shown) at a lower level when in type-ejecting position. There is also a lateral shifting motion of the parts g2 and the mold-plunger (not shown) embraced between the same on the angular member gs to shift the mold from casting to ejecting positions; but it is not necessary for the purposes of this case to consider the said lateral motions. A

The devices hereinbefore described for effecting the upward movement of the mold constitute portions of the clamping devices which operate from below on the mold and cooperate with devices which operate from above on the matrix-block 7L to clamp the matrix and the mold in casting position. The matrix-block 7L has matrices on its face arranged in rows in two directions and has on its back corresponding centering-surfaces j ustified in two directions for permitting any desired matrix to be selected and brought to casting position by a two-way movement of the block. For permitting these two-way movements the matrix-block 7L is directly mounted on a small carriage 7i', which in turn is loosely mounted for transverse movement on guide-bars 712, connected at their ends to the side rails h3, and which parts h2 and 71.3.

constitute portions of the larger or main carriage, which is mounted for a forward and backward movement in suitable guideways formed in a pivoted support h4. Otherwise stated, the main carriage h2 and h3 and the small carriage 77/ for the matrix-block 7L move at right angles to each other. The movements of these carriages are effected by positive devices in one direction to bring the matrix-block to an initial or normal startingpoint and set under tension suitable springs for moving the said carriages in the opposite direction and permitting the same to be vai riably intercepted by suitable stops in eachy of the two directions to select the proper matrix and bring the same to casting position. The stops for thus variably intercepting the matrix-block are operated by armature-levers and magnets under the automatic control of a punctured representative strip. The devices for thus selecting and centering the selected matrix in casting position are not herein shown, but are fully disclosed in my prior patents, hereinbefore identified. The said primary devices, however, bring the sezontal arm of a vertically-movable plunger l 4ha), which is mounted for vertical and pivotal movements in suitable guides, one of which (marked ha) forms a part of or is fixed to the central casting a4. At its lower end the plunger 7b3 is provided with another guide 7150, which is in the form of a shouldered bushing loosely seated in a casting 7a2, which is hollow and serves as a housing for the pump-lock lever 7o', as clearly shown in Figs. 7 `to 9, inclusive. The vertical stem of the plunger h3@ is provided with a grooved nut or collar 7L32, which isembraced bythe forked forward end of a three-arm cam-lever hss. The cam-lever 7L33 is pivoted to the iixed structure d4 at 72.34, as shown in Fig. 2. ver 7t33 stand approximately at right angles to each other and are provided with suitable cam-rollers, which are subject in succession to the action of a peripheral cam-surface h?? on the cam-wheel 4. The stem of the plunger ha() is encircled by a stiy spring 7W, reacting between the collar 7t32 or a lock-nut cooperating therewith and the lower end guide 71.50 for said plunger. Under the action of the cam-surface h3T on the cam-Wheel 4, operating in succession on the two arms ofthe cam-lever 71,33, the plunger 7130 is iirst Aforced downward against the spring 77.38, thereby depressing the spring-seated centering-pin 7128, and thus causing said pin to center the matrix-block in casting position and then to tightly clamp the same to the type-body mold in cooperation with the clamping devices operating from below, as hitherto described, on the vertically movable mold carriage g4. Later the same cam-surface hm, acting on the rollerof the lower or vertical arm of the camlever 7t33, will rock the lever inthe opposite direction, and thereby force the plunger 7L3o into its uppermost position. The spring his will assist in this action and also serves to keep the roller of the horizontal arm of the cam-lever 7t33 in contact with the camwheel 4. The plunger ho is provided witha stiff flat spring 71.39, which overreaches thel loose head 7129 and had in its original functiony to serve asa safetydevice to preventbreakage under the clamping action of the plunger 7b3@ on the centering-pin 71.28. Said springk 7L29 is strong enough to resist the required clampfl ing strain, but will yield, if necessary,.to.pre

ventbreakage of the parts-under thelaction. of the cam. Said spring 7L39 is alsomade to* IOO .IIO

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serve an additional function in respect to the top lever of my presentinvention,or the squirt preventer herein disclosed, as will later appear. The horizontal arm of the plunger 7L30 carries a spring-seated keeper 7t51, which is bifurcated at its outer end and embraces the centering-pin 28 below the head of the pin when the parts are in working position. This keeper 71,01 has as its primary function to prevent the centering-pin 7L28 from turning in its bearings and to hold the plunger 77,30 from any swiveling or pivotal motion when the parts are in working position. Incidentally the said keeper 7151 will also serve to lift the centering-pin 7f3 with a positive action in case the same should get stuck in its lowermost position or its retracting-spring should become broken. Said keeper 7L51 is adapted to be taken hold of by hand and shoved back against its spring, so as to clear the centering-pin 7l28, and thus permit the plunger to be swung laterally with a pivotal motion into such position as to clear the underlying pivotal support h4, on which the matrix-carriages are mounted.

With the exception of the rollerf50 on the nipple carriage or slide, the lower or loose guide 72,50 for the plunger 7L30, and the springseated keeper 7L51 all the parts hereinbefore specied are identical with the corresponding parts bearing the same reference-notations in my said prior patent, No. 609,098.

The squrt-preoener.-I will now describe my present improvement or so-called squirtpreventer. The parts thereof are marked with the reference-letter 7c and its powers. Especial attention is called to Figs. l and 4 to 9, inclusive.

The pump-actuating rod f14 is provided with a notch 7c, as best shown in Figs. l, 7, and S, for cooperation with a latch-lever 7c. The latch-lever 7c is pivoted to the casting 7a2, hitherto noted, and which is of proper construction to serve as a casing for said lever 7c' and to seat the loose or lower end guide 7L50 for the plunger 7L30. The latch-lever 7c' is subject to a spring 7a3, which tends to hold the said lever 7c in its lowermost or normal position, as shown in Fig. 7. The short end of the lever 7c underlies a loose block 7a4, carried on the lower end of a headed rod 7d", both of which parts are seated within the plunger 7L30, the vertical stem portion of which is in this instance formed hollow for that purpose. The loose block 7c1L is recessed to permit movement thereof on the head of the rod 754, and the lower end of the block 7a4 is plugged, as shown in Figs. 7, 8, and 9. The loose block 7a4 is subject to a spring 750, encircling the rod 705 and reacting between the top of the block 7a4 and a collar 707, which may be set in any desired position on the rod 705. The upper end of the rod 765 underlies a lever ks, which is suitably seated within the horizontal portion of the plunger 7100, as best shown in Fig. 4. This top lever ks is pivoted to the horizontal or arm portion of the plunger 71,30 bya screw-stud 7a0, the shank portion of which is eccentric to its head and extends through an eccentrically-located passage in a roller 7510 and is subject to a lock-nut 7c, by which construction the pivot-pin or fulcrum kf may be set in any desired adjustment in respect to the bearings for the same aorded by the seats for the eccentrics 709 and 7&0 in the horizontal arm of the plunger h3". The throw of the lever 7c may therefore be nicely adjusted as required for the {necessary precision to secure the proper action on the latch-lever 7d.

The loose head 7 20, seated in the horizontal or arm portion of the plunger 7t30, as hitherto described, is in this instance carried by the inner or short arm of the top lever 76S of the squirt-preventer. For this purpose the loose head 7120 is recessed or slotted to receive the end of said lever 7c3. The said parts (marked with the reference-letters 7c to 7.311, inclusive) constitute the elements of the squirtpreventer and are related to each other as shown and described. The action thereof can be readily understood.

The stiff safety-spring 71,30, fixed to the plunger 7100, with'its free end overreaching the loose head 7L, as hitherto described, constitutes an upper end stop to the movement of said head 7220 and is sufficiently sti, as hitherto noted, to withstand the normal clamping strain which is applied to the plunger 7t30 and through the same to the head 7W, the centering-pin 7L28, the matrix-block, and the mold from above, and as long as the matrix-block and the mold make a perfect joint when in casting position the parts will comeinto positions shown in Figs. l, 2, and 7 and the latchlever 7c will remain in itsnormal or inoperative position, as shown in Fig. 7. The weight of the long end of the latch-lever 7c and the spring 7c3 keeps the loose head 7a4 in its uppermost position and puts the spring 71:0 under sufficient tension to cause the same to hold the rod 705 in an uppermost position in direct contact with the top lever S of the squirt-preventer. Suppose now that some obstruction, such as a piece of type-metal z, should intervene between the matrix and the mold, as shown in Fig. et, and thereby prevent the matrix and the mold from making a proper joint in casting position. Then it will necessarily follow that under the cooperation of the clamping devices acting on the mold and through the centering'pin 7t28 on the matrix block some element thereof will be obliged to yield in order to permit the cams to complete their normal throws. The centering-pin 7r20 is subject to this yielding action or is the member which will move upward, or, more accurately stated, will fail to move downward to its normal clamping position. Hence the loose head 7x00 will move upward against the tension from the stiif iat spring h3 as the plunger 7t30 goes downward toits limit, and the upward movement of said loose head 7L20 will carry with it the short end of the top lever 75S, thereby forcing down the IOO TIO

rod [c5 and through the spring k6 also forcing down the loose block 7a* against the short end of the bottom or latch lever k', thereby throwing the parts into the position shown in Fig. 8. Otherwise stated, under the action just described the long end of the lower latch-lever 7a will be thrown upward into the notch 7a of the pump-rod f, thereby preventing any action of the pump. When the clamping devices are released under the further movements of the cams, it is of course obvious that the parts of the squirt-preventer will resume their normal or idle positions, as shown in Figs. I, 2, and 7.

The purpose of the loose block 7a4 and the intermediate spring t on the rod is to provide a yielding part in the squirt-preventer, which will permit au excess motion on the rod L5 without breaking any of the parts of the squirt-preventer. For example, suppose some obstruction should intervene between the matrix-block and the mold of unusually large size. In that event the parts could assume the position shown in Fig. 9, or, otherwise stated, the rod 75 of the squirtpreventer could continue to move downward after the latch-lever 7.3 had been moved as far as possible. This yielding part in the squirtpreventer could otherwise be located so long as the same function was preserved.

From the foregoing statements it will be seen that the squirt-preventer is an extremelysimple attachment, but that it is well adapted to serve the purpose intended. By actual and extensive use I have demonstrated the eihciency of the device. The device must of course be properly adj usted; but this adjustment is not so fine as to preclude reliable action. It is only the quads or spacing-type which are hair-spaced, and the smallest printing-type has a face of two units. This two units of face is the smallest adjustment, or, in other words, the smallest-sized obstruction requiring notice by the squirt-preventer. The latch-lever 7o will therefore never be thrown up so as to engage with the notch 7c of the pump-rod f14 unless an obstruction equal to or greater than the dimension of a two-unit type comes between the matrix and the mold. Itfollows that the squirt-preventer does not interfere with the casting action whenever the matrix-block and the mold make a perfect joint, but will always come into play to lock the pump and prevent a cast when such a perfect joint is not secured.

It will be understood that the construction of the squirt-preventer may be widely varied in form without departing from the spirit of my invention. V

It should,perhaps,be noted that in my prior patents pump-locks were disclosed for certain purposes specied therein. None thereof, however, served the purpose of the squirtpreventer herein disclosed, and none were capable of use for this function. One of the locks disclosed in my said prior patents operated after every cast to lock the pump with its piston in its uppermost position under tension from its actuating-spring f1T and was subject to an electric trip having` its magnet in the common return branch of the electric connections, which cooperated to set the matrix-block and the mold-plunger, and hence the pump could not operate until after the matrix-block and the mold had been so properly set. This old lock, although not herein shown,is still used on the machine for the same purpose as disclosed in my prior patents. In some of my prior patents-as, for example, the Patent No. 609,098, of August 16, 1898-I also disclosed a safety-lock for cooperation with the pivoted support h4, (which carries the matrix-carriages,) which safetylock was' so constructed and disposed that when the pivoted support h4 was in its lowermost or operative position said lock would be held in an idle position; but when said support h4 was turned upward on its pivotal bearings and backward over the side of the machine, so as to expose the face of the mold, the spring of the lock would instantly throw the same into au operative position and cause a hook to engage over the end of the pumpactuating rod f14 adjacent to the cam-wheel, and thereby render it impossible for any pump action to take place until after the support h4 had been again` lowered into its operative position. From these statements it will be seen that the pump-locks disclosed in my prior patents served functions entirely different than the lock for the pump herein disclosed and which I call the squirt-pre- Venter.77 In other words, both of said old locks disclosed in my prior patents are still used, and the squirt-preventing lock herein disclosed is also added to serve its own special purpose. All three of the locks coperate in the working machine to prevent any casting action whatever except when the parts are in proper working positions for permitting and securingaperfect cast. The addition ofthe squirt-preventer herein disclosed adds greatly to the efficiency of the machine.

Of course it will be understood that the molten metal4 might be forced into the mold in any suitable way. A pump is the means in almost universal use for that purpose; but any suitable injecting devices might be employed so far as the purposes of the present invention are concerned. If the melting-pot was at a sufficient height, the molten metal might be forced into the mold under the action of gravity under the control of a suitable regulating-valve, to which the squirtpreventer herein disclosed could then be applied.

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What I claim, and desire to secure by Letters Patent of the United States, is as follows:

l. In a type-casting machine, the combination with a mold, a matrix and metal-injecting devices, of a lock for the metal-injecting fail to make a perfect joint, When in casting position, because of the intervention of foreign material between the face of the mold and the face of the matrix, substantially as described. l

2. In a type-casting machine, the combination with a mold, a matrix and a pump, of

clamping devices for clamping together the matrix and the mold in casting position, and a pump-lock subject to said clamping devices and operative to lock the pump and prevent any cast, in case the matrix and the mold fail to make a perfect joint, when in casting position, because of theintervention of any foreign material between the face of the matrix and the face of the mold, substantially as described.

3. The combination with a matrix, a mold and a pump, of a pump-lock and clamping devices, for clamping together the matrix and the mold in casting position, which clamping devices include a yielding part Which, When the matrix and mold fail to make a perfect joint, in casting position because of the intervention of any foreign material between the matrix and the mold, will render said pump-lock operative to lock the pump in idle position, and thereby prevent any cast, substantially as described.

4. In a type-casting machine, the combination with a matrix, a mold, a pump, and clamping devices for clamping together the matrix and the mold in casting position, of a squirt-preventer including a pump-lock and intermediate devices under the control of the said clamping devices, and operative to hold the lock in idle position, as longas the matrix and mold make a perfect joint, but to throw said lock into locking position, whenever said perfect joint is prevented by an intervening obstruction, betweenthe matrix andthe mold, substantially as described.

5. In the type casting andsetting machine substantially as described, the combination With the matrix, the mold, the melting-pot and the pump, of the vertically-movable moldcarriage, the cam-actuated devices for forcing the mold-carriage upward into casting position, the matrix-block, the centering-pin 7h28, the loose head his and the cam-actuated plunger o, for clamping the matrix against the face of the mold, when in casting position, the pump-actuating rod provided with a notch or other engaging surface thereon, and the squirt preventer, including the elements marked 7c to 758, inclusive, for cooperation,

substantially as described.

In testimony whereof I afx my signature in presence of two witnesses.

GEORGE ARTHUR GOODSON.

Witnesses:

OHAs. E. HUNTER, M. J. LorT.

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