US392710A

US392710A - Said lietze

Info

Publication number: US392710A
Authority: US
Publication date: 1888-11-13
Anticipated expiration: 1905-11-13

Description

4 Sheets-Sheet 1..

(No Model.)

H EARTH & E LIETZE TYPE GASTING AND FINISHING MACHINE.

Patented Nov. 13, 1888.

-Dwm

I l I I I I I I I I I I I 4 Sheets-Sheet 2..

Patented Nov'. 13, 1888.:

NQ m 824K mm H. EARTH & E. LIETZE.

TYPE GASTING AND FINISHING MACHINE.

(No Model.)

4 Sheets-Sheet 4'.

(No Model.)

H. EARTH & E. LIETZE. TYPE CASTING AND FINISHING MACHINE.

Patented Nov. 13, 1888 II II lll'nrrnn arem Orricn.

HENRY EARTH AND ERNST LIETZE, OF CINCINNATI, OHIO; SAID LIETZE ASSIGNOR TO THE CINCINNATI TYPE FOUNDRY, OF SAME PLACE.

TYPE CASTING AND FiNiSHiNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 392,710, dated November 13, 1 888.

Serial No. 280.226. (No model.)

To all whom it may concern:

Be it known that we, HENRY EARTH and Enns'r Lrnrzn, both citizens of the United States, and both residing at the city of Cin- 5 cinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Type Casting and Finishing Machines, of which the following is a specification.

This invention relates to type casting and finishing machines in which the type is cast in a horizontal position, and,after the mold-covering slide is moved to one side,so as open the mold, pushed up out of the mold, and then,by 1 the returning mold-covering slide, pushed horizontally to a vertical channel, pushed down into this channel,and then out ofit onto a horizontal rule, and in which machines the type, after being pushed up out of the mold and while in a horizontal position or moving horizontally, is shaved at its upper and lower surfaces and separated from the jet.

The present invention may be regarded as improvements on the machine for which Letters Patent No. 376,765 were granted to us on or about the 24th day of January, 1888. EX- cept the improvements within described, and pointed out by the claims, all parts of the frame-work and mechanism are substantially the same in this improved machine as in our said prior device.

The objects of our invention are, first, to provide means for limiting positively the movement of the mold-covering slide and for adjusting the limit of this movement accurately and conveniently; second, to supply the mold-covering slide with a looking or bolting device to act when the mold is closed and to cause the faces of the stationary and the slid- ,0 ing parts of the mold which come in contact with the matrix to be in one plane even when the moldcovering slide shall have worn a lit- He play in its guides; third, to prevent shavings produced by the upper shaving-knife from adhering to the mold-covering slide and from being taken along by the same, so as to come between the faces of mold and matrix; fourth, to design an improved mechanism for holding the type while being transferred from the mold to the said vertical channel and while it is shaved and freed from its jet; and, fifth, to construct an improved matrixholding device which secures a perfect contact between matrix and mold. WVe attain these objects by the devices illustrated in the accompanying drawings, in which- Figure 1 represents a front elevation of a portion of the machine; Fig. 2,atop View of aportion of the machine; Fig. 3, a sectional detail view showing theleft end of the mold-covering 6o 7 slide and parts of the device for limiting the movement of the same and for adjusting the limit of its movement; Fig. 4., a detail View showing the end of the matrix-slide, which is broken off in Fig. 2 by the marginal line of the drawings; Fig. 5, a longitudinal section of a part of the machine through the center of the mold about the line X X, Fig. 14. Figs.

6, 7, 8, and 9 are detail views representing the parts of the looking or bolting device of the mold-covering slide. Figs. 10 and 11 are detail views showing the upper shaving-knife and the plate to which it is attached. Figs.

12 and 13 are respectively a plan and an elevation of the matrix-case with the matrix. Fig. 14 is a eross seetion of a part of the machine at the vertical line NV, Fig. 5; but the mold is supposed to be closed, in

which position the vertical lineV of the moldcovering slide 69 coincides with the Vertical 8c line W' and the matrix is in contact with the mold. Fig. 15 is sectional view of a small portion of the machine at the vertical line Y Y, Fig. 14.. 'It illustrates the side and head bearing of the matrix; Fig. 16, a top view of a portion of the matrix-support, the plate 250 being omitted in this View in order to show the wedge-shaped head bearing of the matrix; Fig. 17, a top view of the stationary parts of the mold with the shaving-knives and the type in the mold; Fig. 18, a detail side View of the wiper which removes the shavings from the mold-covering slide and a passing type in their relative positions. Fig. 19 is an elevation of portions of the rnoldcovering slide and the spring-pressed sliding bar, between the end surfaces of which two pieces the type is held. It shows, also, the gageblock for adjusting the space'between the end faces of the two slides; Fig. 20, an end view of the spring- 100 pressed sliding bar 237 and the gage-block 268; and Fig. 21, an isometric view of the end of the spring-pressed sliding bar 237,carrying 1 the spring 269.

Similar numerals or letters refer to similar parts throughout the several figures, and all parts which are the same in these improvements as in our prior machine (described and illustrated in the specification of Patent N 0. 375,765, dated January 24, 1888) are repre sented by the same characters in this as in the specification of our said prior patent.

Referring to the drawings, the mold, Figs. 5 and 1 1-, into which the metal is forced by a pump through the nipple 31 and the apron 45, is composed of stationary and of movable parts. The stationary parts consist of the side members or checks, 61 and 65, Fig. 5, which are permanently attached to the integral baseplate 68 and supported and held by the moldbeam 5, which is a part of the stationary framework of the machine. The jet-

pieces

66 and 67, Fig. 17,'also partly visible in Fig. 2, may be considered as parts of the cheeks 6i and 65. For practical reasons they are made separate] y and attached to the cheeks by means of the bolts and 71. The part 267 does not belong to the mold proper. It is fastened to the base-plate 63. It serves for supporting the shavingknife 99, and has a gutter through which the shavings coming from the shavingknives are conducted away. The movable parts of the mold are the body-piece 68, the sliding cover 69, and the matrix 181.

The body-piece 68 forms the bottom of the mold and serves also to push the type up out of the mold. It is fixed to the vertical sliding bar 74., passes through a rectangular hole in the base-plate 63 of the mold, and fits accurately between the cheeks 61 and 65 and the jet-

pieces

66 and 67. The top surface of the body-piece 68 has precisely the form of the type with its j ct. The slidingbar 7 1-,t0 which the body-pieces 68 of the mold is attached, is guided in a groove that is planed in the mold beam 5 and closed by the lid 76, Fig. 1 1. The

parts

165 and 166, which appear in Fig. 11 in section, are wedges passing through holes in the sliding bar 74, and serve for limiting the motion of the sliding bar, and, consequently, that of the body-piece of the mold, as also to adjust the limits of said motion in such a manner that the top surface of the body-piece is exactly flush with the top surface of the, cheeks 64 and 65 when the body-piece is in its highest position, and so that the mold has the required depth when the body-piece occupies its lowest position.

The mold-cover 69 is a great deal longer than the stationary parts of the mold and slides on the top surface of themold-beam 5 and on the top surfaces of the stationary parts of the mold, which surfaces are worked accurately to one level. Sidewise the slide 69 is guided between the plates 77 and 78, Figs. 1 and 2, which are bolted to the sides of the mold-beam. The

parts which are attached to the slide 69 and the functions of the same we will describe hereinafter.

The slide 69 closes the mold on top during the time the metal is forced into the mold. It moves toward the left and opens the mold after the type is sufficiently cooled off and solidified, stops in its extreme left position and leaves the mold open until the type is pushed up out of the mold,and moves then toward the right and pushes the type along until the latter will be exactly over the vertical channel 261, into which the type is pushed and in which it is grooved and dressed.

The matrix 181, Fig. 1 1-, shuts the mold in front while the type is formed, and it is withdrawn before the type is pushed out of the mold by the body-piece 68. The arrangement of the parts which support and hold the matrix we will also describe later on.

In Fig. 14 the mold is shown closed and the type 262 in the position it occupies just after being formed.

In Figs. 1, 2, and 5 the slide 69 is in its extreme left position and the mold opened.

In Fig. 5 the type 262 appears in the position which it occupies just after being pushed up out of the mold, and the vertical channel 261 is shown as being filled with types.

The mechanisms for operating the mold-covering slide 69, the sliding bar 7 1, with the bodypiece 68 of the mold, and the lever 188, Fig. 14, of the matrix motion, as also the dressing apparatus and the device by which the types are pushed down into the vertical channel 261 of the grooving and dressing apparatus, are the same in this improved machine as in our said prior device. They were fully described in the specification of Patent No. 876,7 65,and as they are not referred to in the present improvements it will notbe necessary to describe them herein.

The first object of our improvements prcsented herein is to supply the slide 69 with an easily-adjustable device for positively limiting the motion of the same in one direction. It is very important that when the mold-covering slide arrives at the right extremity of its stroke the type be accurate] y over the perpendicular channel 261. This position of the type depends upon the end position of the slide 69, and experience has taught us that on account of unavoidable wear in the joints of the moving parts and for other reasons the slide 69 will not stop precisely at the same point after every movement without such a device.

In order to attain our object we provide the slide 69 with the stud 245, Figs. 1, 2, and 3, which is screwed into the end of the slide and terminates in a screw. cross-head 264 is fitted in a manner which pre vents it from swiveling on the stud,but permits to adjust it longitudinally. The adjustment of the crosshead is accomplished by means of the nut 21-7 engaging the screw at the end of the stud. In order to prevent the cross-head from swiveling on the stud,the part of the latter on which the cross-head is fitted is filed flat To this stud the IIO on top and a suitable gib is inserted in the cross-head. Between the cross-head 246 and the nut 24.7 a washer is placed. The crosshead is provided with a set-screw, by means of which it can be tightened to the stud. The mold -covering slide 69 moving toward the right will be stopped when the cross-head 246 touches the plates 77 and 78, Figs. 1 and 2, which are bolted to the sides of the mold-beam 5 and between which the slide 69 is guided,and if the cross-head is correctly adjusted the slide 69, and with it the type, will occupy the desired position. It may be mentioned that the crosshead, fastened by the set-screw in the proper place,is alone sufficient to cause the mold-covering slide to stop at the correct point, and that the screw and the nut at the end of the stud serve to do the adjusting of the crosshead conveniently.

The second object of our improvements-to cause the faces of the cheeks and of coveringslide of the mold on which the matrix rests to be precisely in one plane when the mold is closed, and to prevent hereby the metal from leaking between matrix and mold-we attain by the following locking or bolting device: The plate 234 (shown in detail in Figs. 6 and 7) terminates in a fork and is bolted to the top of the slide. 69 at the right end of the latter, so that the fork projects toward the right. Another plate,233, drawn in detail in Figs. 8 and 9, is provided with a projection or tongue corresponding in form and size with the fork of plate 234. This plate is bolted to the stationary framing of the machine at such a place and in such aposition that when the mold is closed and the faces of the said parts of the mold are in proper position the said tongue fits tightly in the fork of plate 23st. The tongue and the opening in the fork are made taper, so that the tight fit of these two pieces only takes place when the mold is entirely closed. In order to provide foran adjustment of the tongue in relation to the fork, the plate 233 has a groove planed in its bottom face. The part230 oftheframingon which the plate 233 bears, is prepared with a corresponding feather, and the bolt holes in plate 233 are made a little larger than the bolts for holding it down, so that the plate 233 can be moved in a straight line by means of the setscrew 236,which works the stationary nut 235, Figs. 1,2, and 5. It is evidentthat the same result would be accomplished if the slide 69 were constructed with a tongue and a fork were ap plied to the stationary framing; and that a taper hole could be substituted for the fork if a taper pin were used instead of the tongue; or that one of these parts could be made with several projections and the other with an equal number of corresponding indentations. In our prior device we arrived at this object by closely fitting the slide 69 between its guide; but we found such close fitting to be difficult and troublesome to maintain.

In our prior device a small knife was attached to the mold'covering slide 69, near the right extremity of the latter, for the purpose of shaving(or"rubbingthetechnicaltermused by type-founders) the upper side of the type while the same was still lying in the mold and while the slide 69 was moving toward the left, so as to open the mold. This arrangement presented the trouble that often shavings produced by the knife adhered to the slide and the faces of the cheeks and came, when afterward the mold was closed again, between mold and matrix and caused leakage. The shavings sometimes found their way under the mold-covering slide and lifted it up. To obvi ate these troubles is the third object of our improvements, and we attain it by the following arrangement: VVe remove the upper rubbing-knife from the mold-covering slide and substitute for it the stationary knife 258, Figs. 1, 2, 10, and 17, which is adjustably attached to the plate 257. This plate is firmly secured to the part 267 of the moldbase, and has a proj eetion, 265, Fig. 10, which is so fitted that when its lower side rests upon the part 267 its upper sideis precisely in one level with the top surface of the mold. In order to adjust the knife 258 to heigh t,a finished type is placed between the projection 265 of the plate 257 and the knife; then the knife pressed down gently and fastened to the plate 257 by means of a screw. Between the knife 258 and that part of the mold on which the matrix rests when the mold is closed a wiper, 256, made of bristles, cloth, felt, leather,or asimilar material and attached to a'sheet-iron holder, is arranged so that the end of the wiper touches the mold. The wiper-holder is fastened to that part of the framing which forms the guide for the matrix-slide and to which the side and head bearings for the matrix are applied. The wiper 256 and its holder 255 have a notch, Fig. 18,just large enough to allow the part of the type which was formed in the matrix to pass freely. The mold is also provided with the bottom shaving-knife, 99, and the breaker 100,Fig. 17, which are the same in this machine as in our said prior device. The typeis now in this improved arrangement shaved on top and bottom side and freed from its jet, while the moldcovering slide moves toward the right and pushes the type from the place where it was pushed up out of the mold to the vertical channel, into which it is delivered afterward to be grooved and dressed. This arrangement successfully preventsshavingsfrom arriving at the left side of the wiper.

The fourth object of our improvements was suggested to us by the fact that thin types were compressed sidewise in our prior machine while being transferred from the mold to the said vertical channel. From this fact we learned that thin types ought not to be held with the same horizontally-directed pressure as thick ones require while passing the breaker, because the pressure acts in thinner types upon a smaller surface than in thicker ones, and the types, being still warm, are easily compressed. Very thin type can bear no side pressure at all without being deformed. For

nates.

tunately the jet of a thin type requires but a small force in order to be removed, and a vertical pressure is sufficient to hold the type during this operation. With these points in view we have designed the following devices for holding the type while it is transferred from the place where it is pushed up out of the mold to the vertical channel of the grooving and dressing apparatus and while it passes the shaving-knives and the breaker. The mold-covering slide is provided with a cylindrical hole near its right end, in which the piston 88 is fitted, Fig. 5. The lower part of the hole is slotted through to the right end face of the slide, and at the lower end of the piston 88 a little feather is worked on, which projects into the slot and prevents the piston from turning. A plate, a. a trifle thinner than the thickness of the bodies of the type and about as wide as the bodies are high, is screwed to the feather on the piston. The piston 88 is partly hollow, and in its interior is placed a spring, which rests on a small plate, 105, screwed to the bottom surface of the slide 69 and has the tendency to push the piston up. Near its upper end two trunnion-like pins,90, projecting forward and backward, are applied to the piston 88. The two pins 90 are provided for the fork to act upon,in which the right arm of the three-armed lever 238 termi- The stand 94, which is bolted to the slide 69, serves as a fulcrum-support for the three-armed lever 238. The spring-rod 242 is pivoted to the upwardly-directed arm of the lever 238 and is guided in a hole of the post 244, which is secured to the mold-covering slide 69, Figs. 1 and 2. The spring 243, which is slipped on rod 242, rests against the post 244 and forces the upright arm of the lever 238 toward the right, so that the fork of the right horizontal arm presses the cylinder 88, with the plate a, downwardly. The adjusting-screw 239 is tapped in the right arm of lever 238, has a jam-nut to prevent it from being jarred loose, and limits the downward movement of the cylinder 88 when its point strikes the head of the bolt, which holds the plate 234 to the moldeovering slide 69. The tail of the third arm of lever 238 acts asa camtrack and engages the stationary roller 241 when the mold-covering slide 69 arrives at the left extremity of its stroke, whereby the cylinder 88, with the plate a, is released from the pressure of the spring 243. The roller 241 is pivoted to the angular piece 240, Figs. 1 and 2, which is bolted to the guide-plate 78 of the slide 69 in such a manner as to provide a vertical adjustment of the roller. When the moldcovering slide 69 stops in its extreme left position, (see Fig. 5,) the.plate a is right above the type in the mold. After the type has been pushed up out of the mold and the body-piece 68 is exactly flush with the top surface of the mold, the slide 69 starts to move toward the right, touches the type, and pushes it along. Before the type reaches one of the knives the cam-track on the left arm of the lever 238 leaves the roller 241 and the spring 243 comes into action and by means of the lever 238 and the cylinder, with the plate a, presses the type down. This arrangement is perfectly sufficient to hold thin types, which would not stand being held sidewise in passing the shaving-knives and the breaker. When the slide 69 has arrived at its extreme right position and stops and the type is exactly over the vertical channel 261 of the grooving and dressing apparatus, the rod 103 will be set in motion and the setscrew 104 in the upper horizontally-bent part of this rod will strike the piston 88 and the plate a will push the typeinto the vertical channel 261 between the

plates

101 and 102 to be grooved and dressed. WVhen the mold-covering slide 69 is returning toward theleft, the set-screw 239 in the right horizontal arm of the lever 238 and the spring in the hollow cylinder 88, which lifts the cylinder up, prevent the lower face of the plate a from touching the face of the mold.

For thick types, which require to be held by a larger force while passing the breaker, we use the parts which we are going to describe now alone or in combination with the foregoing device.

The sliding bar 237, Figs. 2 and 5, is guided in the case 230 and arranged in one line with the mold-covering slide 69,- so that its left end faces the right end of the latter and its lower or bottom side lies in the horizontal plane in which the top surface of the mold and the bottom surface of the slide 69 lie. It is made hollow for the greater part of its length. The rod 232 is centrally attached to it, extends beyond the right end of the same, passes a hole in the plate 231, by which the guiding-case 230 is closed, and terminates in a screw. Aspring, which is slipped on the rod 232 and rests against the plate 231, forces the sliding bar 237 against the mold-covering slide 69. By means of two nuts, which are placed at the right extremity of the rod 232, the left-end position of the sliding bar 237 is so adjusted that when the mold-covering slide arrives at its extreme left position the type can be freely lifted up out of the mold, and will then be between the left-end surface of the sliding bar 237 and the right-endfaee of the mold-covering slide 69, as shown in Fig. 5. Now, when the mold covering slide 69 will move toward the right, the type will be held, by Virtue of the spring on rod 232, between the opposite end faces of the

slides

69 and 237.

Very small types must be cast quickly and in a comparatively hot mold. They are very easily damaged in the state in which they are lifted out of the mold, and the pressure with which they are held between the end faces of the

slides

69 and 237 must be reduced to a minimum-that is to say, the pressure must be just sufficient to hold the type, but not greater. Inv order to regulate this pressure,we apply the block 268, Figs. 19 and 20, to the sliding bar 237. This part has side flanges for the bar 237 to fit between, and is secured to the bar by means ofa screw. The hole through which the screw passes is made a little larger than the screw, which allows to so adjust the position of the block that when its projecting point touches the mold-covering slide the width of the space between the opposite end faces of the

slides

69 and 237 is equal to the thickness of the type bodywise. hen the type con fined in this space and moving forward meets the breaker, there is a tendency to turn the type above a vertical axis, but the confinement prevents such motion taking place. At the same time the type is pressed by a couple of forces called into action by the resistance of the breaker against the end surfaces of the slides, and the friction due to this pressure prevents the type from moving longitudinally. In this manner the pressure by which the type is held horizontally regulates itself according to the force required to break off the jet. When it is required to hold thin types by a vertical pressure only, or when heavy types are wanted to be held with the whole force of the spring in the sliding bar 237, the block 268 need not be taken off, but only moved a littlein the first case toward the left and in the second case toward the right.

For certain types we find it necessary to provide the end surface of the sliding bar 237 with a light spring, 269, Figs. 20 and 21, of just sufficient strength to hold the type. For this purpose we cut a shallow groove perpendicularly into the end of the sliding bar 237. The lower part of this groove is rectangular. The upper part of the same has the form of a dovetail,and holds the spring 269. The groove could have been made just as well rectangular all through and the spring fastened to the slid ing bar by means of small countersunk screws. The spring 269 is slightly bent,so that its lower end projects a little over the end face of the bar 237 5 but when force is applied to its lower end the spring will straighten and be even with the end surface of the sliding bar. The gageblock 268 being so adjusted that the space be tween the opposite end faces of the

slides

69 and 237 is a trifle larger than the thickness of the types bodywise, the force by which the type is held horizontally is limited by the strength of the spring 269. Small types are often injured by the percussion which takes place at the moment when the mold covering slide 69 sets in motion the sliding bar 237. The spring 269 serves to prevent this. When heavier types are to be cast, for which the strength of the little spring is insufficient to hold, this spring does not need to be removed. The gage 268 is only to be readj nsted, either so that the width of the space between the slides is equal to the thickness of the types bodywise, or so that the slide-block does not act at all. WVhen very thin types are required to be held by a vertical pressure only, the gageblock 268 can be moved so much toward the left that the spring 269 does not touch the type.

The fifth object, which regards the improvement of the matrix-holding device, was com mended to us by the difficulty which presented itself in our prior machine of maintaining the parallelism of the corresponding faces of matrix and mold at the varying degrees of heat which the different parts of the machine obtain at different times. Our object is to prvide an arrangement in which the face of the matrix will accommodate itself to the front face of the mold. We attain this object in the following construction: The slide 248, Figs. 1. 2, 4, 14, and 15, is operated by the lever 188 to and from the mold. The motion of the lever 188 is derived from asuitable cam and a spring precisely in the same manner as in our prior device, Patent No. 376,765. The slide 248 is guided in the box 249, which may be considered as a part of the framing of the machine. The box 249 is made separately and dovetailed to the mold-beam for convenience in making; but it could be cast in one piece with the mold-beam just as well. The stud 266, Fig. 14, and the washer and nut on the same are intended to prevent the slide 248 from being lifted up. The matrix 181 is held in the matrix-case 283, Figs. 12 and 13, by means of the screw 264, and rests upon the matrixsupport 251, Figs. 14, 15, and 16. The latter is guided with its lower round parts in a hole of the slide 248, Fig. 14, and is constantly forced upwardly by a spring. The upper part or head of the matrix support forms a little platform, has a rectangular groove into which a part of the matrix-case 263 projects,

and touches with one side an upward projec-- tion of the right flange of the guide-box 249, Figs. 2, 15, and 16, whereby the matrix-support is prevented from swiveling around its vertical axis. The said groove runs in the direction in which the slide 248 moves, but does not extend entirely across the top of the matrix-support, a rib being left at the side near the mold. The stationary plate 250, Figs. 1, 2, 14, and 15, which is secured by screws to the right flange of the guide-box 249, serves as a side-bearing for the matrix and determines the vertical position of the same. The position of the matrix in relation to the mold can be adjusted vertically, first, by fitting, say by filing, the upper side of the matrix-case; second, by fitting the bearing-surface on the right flange ofthe guiding-box 249, upon which the plate 250 rests, to a proper height, and, third, by fitting this bearing-surface a little lower and inserting between it and the plate 250 a metal plate of suitable thickness. The wedge 253, Figs. 2, 15, and 16, serves as headbearing for the matrix, as also for regulating the position of the matrix horizontally. It is placed under the plate 250 and fastened to the upwardly projecting part of the right flange of the guiding-box 249, and can be adjusted by means of the screw 254. The slide 248 is provided with a case,in which the stem 259 is guided, and which contains aspring that pushes the stem in a direction toward the mold. The needle 252 is connected with the stem 259 by means of a ball-and-socket joint, and impinges with its conical point upon the matrixcase. It has such an inclination that when the slide 248 is in the position nearest to the mold the matrix is forced, by virtue of the spring on stem 259, against the mold, up under the plate 250, and toward the wedge 253.

The strength of the springs on the matrix-support 251 and on the stem 259, and thelocation of the point of impingement for the needle 252 on the matrix-case 263, are so selected that the face of the matrix will accommodate itself to the corresponding face of the mold even when, in consequence of the heat, the lower face of the plate 250 should deviate a little from being rectangular to the face of the mold. The stem 259 terminates in a screw, and is sup plied with a wing-nut and with the collar 260.

The latter can be adjusted by means of the.

wing-nut, and has a set-screw with which it can be fastened to the stem in such a position that when the mold is closed by the matrix the clearance between the collar 260 and the slide 248 is about equal to the clearance be tween the downward projection of the matrixcase 263 and the rib which closes the groove of the matrix-support 251. \Vhen the slide 248 is returning, the matrix will keep in contact with the mold until the slide 248 touches the collar 260. At the same time the pressure with which the spring on stem 259 forces the needle 252 against the matrix-case will cease. Then the matrix will also be withdrawn, as the rib on the matrix-support will act upon the downward projection of the matrix-case. lVhen the slide 248,and with itthe matrix, are completely withdrawn, the latter may be casil y taken out and replacednamely, by drawing a little on the stem 259 the needle 252 will leave the center punch-hole in the matrix-ease and can be movedout of the way, and the matrix being then near the front side of the plate 250 can be conveniently reached with a finger. When the slide 248 moves with the matrix toward the mold, the matrix will touch the mold before the slide arrives at its extreme position, and as it is then still rclcased from the pressure of the spring it will touch the mold without jar, except that due to its own weight, and while the slide 248 is finishing its motion the spring 011 the stem 259 will be gradually compressed and the matrix held with force in its proper position.

Having thus described our invention, what we claim is- 1. In a type-casting machine, the combination, with the mold-covering slide and the framing in which said slide is guided, of the stud 245, attached to the end of said slide, and the cross-head 246, fitted adjustably to said stud and adapted to limit, together with the framing, the movement of the mold-covering slide positively, substantially as set forth.

2. The combination, with a type-mold having stationary side members and a sliding cover and the stationary framing, of two parts,

one of which terminates in a fork and the other in a corresponding tongue, one of the said parts being fastened to the sliding cover of the mold and the other to the stationary framing in such manner and position that when the mold is closed and the corresponding faces of the said mold parts are exactly flush with each other the said tongue will fit closely in the said fork, substantially as described and specified.

3. In a type casting and finishing machine, the combination,with a type-mold having stationary side members and a sliding cover, a matrix, and the stationary framing of the machine, of a stationary adjustable knife adapted for rubbing the upper side of the type while the same is moved by the said sliding cover over the top surface of the stationary parts of the mold, and a wiper fastened to a stationary part of the machine and adapted to remove shavings produced by the said rubbing knife which may adhere to the front face of the said sliding cover, and to prevent shavings from coming and adhering to those parts of the members of the mold which come in contact with the matrix, substantially as set forth.

4. The combination,with the mold-covering slide, of the piston 88, guided in a hole of said mold-covering slide, the pushing-plate a on this piston, the lever 238, fulcrumed to the said mold-covering slide and adapted to act upon the piston 88 downwardly,the spring 243, acting upon one arm of lever 238, the set-screw 239 for limiting the downward position of the said piston, and the stationary and adjustable roller 241, engaging, when the said mold-covering slide arrives at its extreme left position, the end of one of the arms of lever 238, and so releasing the piston 88 from the downwardlydirected pressure caused by the action of spring 243, substantially as and for the purpose set forth.

5. In a type-casting machine, the combination, with the mold covering slide, of a sliding bar guided in a stationary casing placed a-linc with the mold-covering slide and with its end facing the end of the latter, a spring adapted to move the said sliding bar in the direction toward the mold-covering slide, and a stop for limiting the movement of the sliding bar in the direction in which the spring acts, the whole combination being adapted to hold the type between the opposite end faces of the mold-covering slide and the said sliding bar, substantially as set forth.

6. The combination,with the mold-covering slide, of a sliding bar guided in a stationary casing and placed a-line with the mold-covering slide, so that its end faces the end of the latter, a spring adapted to move the said sliding bar in the direction toward the mold-covering slide, a stop for limiting the movement of the sliding bar in the direction in which the said spring acts, and a gage-block attached to the end of the said sliding bar and adapted to regulate the width of the space between the end faces of the mold-covering slide and the said sliding bar, substantially as set forth.

7. The combination,with the mold-covering slide 69, of the sliding bar 237, guided in a stationary casing placed a-line with the moldcovering slide, so that the surfaces of the

slides

69 and 237 face each other, and provided with the spring 269, attached to its end face, a spring adapted to move the said sliding bar 237 in the direction toward the mold-covering slide 69, and a gage-block, 268, attached to the end of the said sliding bar and adapted to adjust the width of the space between the opposite end faces of the mold-covering slide 69 and the sliding bar 237, substantially as set forth.

8. The combination, with a type-mold and a matrix, of the matrix-case 263, the slide 248, the matrix-support 251, guided in the slide 248 and pressed upwardly by a spring, the stationary plate 250, adapted to determine the position of the matrix vertically, the Wedge 253, adapted to adjust the position of the matrix horizontally, the spring-stem 259, guided in the slide 248, pressed by a spring in the direction toward the mold and provided with an adjustable collar, 260, for limiting its movement, and the needle 252, connected with the spring-stem 259 by a balLand-socketjoint and adapted to impinge upon the matrix in such oblique direction that thelatter will be pressed against the mold up onto the plate 250 and toward the wedge 253, substantially as shown and described.

HENRY EARTH. ERNST LIETZE. Witnesses:

B. E. DILLEY, GEO. (l. WRIGHT.