US794162A

US794162A - Machine for casting and finishing stereotype-plates.

Info

Publication number: US794162A
Application number: US24484303A
Authority: US
Inventors: Benjamin F Curtis
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-01-17
Filing date: 1903-01-17
Publication date: 1905-07-11
Anticipated expiration: 1922-07-11

Description

No. 794,162. PATENTED JULY 11, 1905. B. P. cmms. MACHINE FOR CASTING AND FINISHING STEREOTYPE PLATES.

APPLICATION FILED JAN. 17, 1903. RENEWED FEB. 9, 1905.

10'BHEETSSHEET l.

INVENTOR ll-TM A ,ORNEY.

No. 794,162. PATBNTED JULY 11, 1905;

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MACHINE FOR CASTING AND FINISHING STEREOTYPE PLATES;r

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Nb. 794,162. PATENTED JULY'11;1905.I

B. F. CURTIS.

MACHINE FOR CASTING AND FINISHING STEREOTYPE PLATES.

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MACHINE FOR CASTING AND FINISHING STEREOTYPE PLATESa APPLIUATION Hum JAN. 17, 1903. nnnnwnn FEB. 9. 1905.

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No. 794,162- PATENTED JULY 11, 1905.

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MACHINE FOR CASTING AND FINISHING STEREOTYPE PLATES APPLIOATION FILED JAN. 1?, 1003. nmzwnn r23. 9, 1005 10 sa nnTs-sfisnr s.

No. 794,162. PATENTED JULY 11, 1905.

B. F. CURTIS. MACHINE FOR GASTING AND FINISHING STEREOTYPB PLATES. APPLICATION TILED JAN. 17; 1903. RENEWED FEB. 9, 1905.

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APPLICATION FILED JAN. 17, 1903. RENEWED FEB. 9. 1905.

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No. 794.162. PATENTED JULY 11, 1905. B. P. CURTIS: MACHINE FOR CASTING AND FINISHING STEREOTYPE PLATES.

APPLIGATIOH FILED JAIL 17, 1903. RENEWED FEB. 9. 1905.

10 SHEETS-SHEET 8.

INVENTOR No. 794,162. PATENTED JULY 11, 1905. B. F. GURTIS.

MACHINE FOR CASTING AND FINISHING STERBOTYPB PLATES.

APPLICATION FILED JAN. 11, 1903. RENEWED rm. a. 1005.

10 SHEETS-SHEET 9.

No. 79 35162. 7 PATENTED JULY 11, 1905.

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MACHINE FOR CASTING AND FINISHING STEREUTYPE PLATES,

APPLICATION FILED JAN. 11', 1908. 'BBR'EWBD FEB. 9, 1905.

10 SHEETS-SHEET 10.

Patented July 11, 1905.

BENJAMIN F. CURTIS, OF NEWV YORK, N. Y.

MACHINE FOR CASTING AND FINISHING STEREOTYPE-PLATES.

SPECIFICATION forming part of Letters Patent No. 794,162, dated July 11, 1905.

Application filed January 1'7, 1903. Renewed February 9, 1905. Serial No. 244,843.

.To all whom, 7115 may concern.-

Be it known that I, BENJAMIN F. CURTIS, a citizen of the United States, residing at the city of New York, borough of Queens, county of Queens, State of New York, have invented 'certain new and useful Improvements in Machines for Casting and Finishing Stereotype- Plates, of which the following is a specification.

This invention relates to improvements in machines for casting and finishing stereotypeplates.

The object of my invention is to provide a new and improved machine of this kind which is simple in construction, durable, rapid, effective in work, and which automatically casts the stereotype-plates,finishes the under sides, and trims the edges of the same, and also automatically deposits the finished plates.

This machine consists, essentially, of a rotatable drum carrying a series of stereotypemolds or matrix-holders, which are successively presented to the spout of a swinging casting-pot, whereby the stereotype-plates are cast, and the cast plates are then automatically removed from the drum on which they were cast and deposited upon another drum upon which they are finished by suitable tools, and are then automatically deposited, the two drums being geared together, so as to move at the same time for the purpose of presenting a fresh mold to the casting-pot and at the same time presenting a fresh plate to the trimming and finishing mechanisms, and which two drums between each two periods of motion remain at rest for a short time, during which the casting and finishing operations take place, whereupon the drums are again rotated step by step. The means for tilting the casting-pot, rotating the drums, ejecting the metal from the pot into the molds and operating the trimming devices, and performing all other mechanical actions in the machine are all operated from one and the same driving-shaft.

In the accompanying drawings, in which like characters of reference indicate like partsin all the figures, Figure l is a side view of my improved stereotype casting and finishing machine. Fig. 2 1s a plan view of the same,

parts being shown in section. Fig. 3 is a vertical transverse sectional view of the same on the line a e of Fig. 6. Fig. 4 is a vertical transverse sectional view of the same on the line a" a of Fig. 6. Fig. 5 is a vertical transverse sectional view on the line a a of Fig. 6. Fig. 6 is a vertical longitudinal sectional View on the line a a of Fig. 5. Fig. 7 is a vertical transverse sectional view on the line a a of Fig. 2. Fig. 8 is a detail vertical longitudinal sectional View through one end of one mold, showing the latter and its cover raised. Fig. 9 is a vertical transverse sectional view on the line a a of Fig. 2. Fig. 10 is a detail end view of the mechanisms for raising a mold and its cover. Fig. 11 is an end view of the entire machine. Fig. 12 is a vertical transverse sectional view through part of the drum and a mold, showing the latter raised. Fig. 13 is a side view of the mechanisms for trimming the plates and supporting the same while being trimmed, parts being shown in vertical longitudinal section. Fig. 14 is a detail elevation of parts of the casting-pot.

The machine is constructed with the main frame 1, at one end of which the main driving-shaft 2 is mounted in suitable standards 3 on the main frame and which shaft 2 carries at one end a suitable belt-pulley 4 or any other equivalent driving means. A beveled cogwheel 5, keyed on the main driving-shaft 2, engages a beveled cog-wheel 6, fixed on one end of a horizontal shaft 7, journaled in standards 8 on the main frame and extending in the direction of the length of the frame, which shaft 7 is provided on the end opposite the one carrying the beveled cog-wheel 6 with a crank 9, which is connected by a connectingrod 10 with a crank 11 on a rock-shaft 12,

mounted horizontally in bracket-supports 15 of the main frame. The shaft 12 carries a rock-arm 13, having a spring-pawl 14, adapted to enter notches 15 in a disk 16 on one end of a horizontal shaft 17, suitably mounted in the main frame. There are six equidistant notches 15 in the disk 16 to correspond to the six sides of a drum 18, which is secured on the shaft 17 and which will be further described later on.

As the shaft 7 rotates the arm 13 is swung to and fro and when swinging to the left, Fig. 9, rotates the shaft 17 and the drum 18 thereon one-sixth of a rotation, and when this arm 13 swings to the right the shaft 17 and the drum l8 thereon remain at rest.

A clutch-sleeve 19 is mounted on the shaft 2 to rotate with and slide longitudinally on the same and can be engaged with the clutch 20 of the sleeve 21, carrying a beveled cogwheel 22, on the outer end of which sleeve a crank-arm 23 is keyed, which in turn is connected with a connectingrod 24 for a purpose that will appear hereinafter. The clutchsleeve 19 has a circumferential groove 24, into which the forked end of a short lever 25 extends, which is pivoted at 26 and is connected by a rod 27 with a yoke 28, embracing a cam-disk 29, secured on the shaft 7, which yoke carries an antifriction-roller 30, traveling on the rim of the cam-disk 29 for the purpose of alternately throwing the clutch-sleeve 19 into and out of mesh with the clutch 20. The beveled cog-wheel 22 engages a beveled pinion 31, fixed on a short shaft 32, mounted in the standards 33 of the main frame, and this shaft 32 is connected bya connecting-rod 34, having a universal joint at each end with a shaft 35 mounted in brackets 36 on a casting-pot 37.

The longitudinal shaft 7 previously mentioned carries a cam-disk 38, which is embraced by a yoke 39, carrying an antifrictionroller 40, and this yoke 39 is connected by a connecting-rod 41 with a crank 42 on one end of a horizontal rock-shaft 43, mounted on the horizontal part of the main frame of the machine and serving for a purpose that will be set forth hereinafter.

The casting-pot 37 is supported on a frame 44, mounted to rock on a shaft 45, mounted in downwardly-extending U-shaped extensions 46 of the main frame, so that the casting-pot can have a slight motion to and fro. The contents of the casting-pot can be kept in proper condition of fusion by gas-jet tubes 47 below the pot. The pot 37 is provided near the bottom with an outlet-channel 48, which can be closed by a valve 49 on the lower end of a screw-rod 50, having a hand-wheel 51 at its upper end.

A spout 52 is attached to the casting-pot and extends the entire length of the casting slots or openings of the molds on the drum 18. These molds, which will be described later on, have their outer surfaces shaped on a convex line concentric with the center of the shaft 17, so that all these molds will be within a circle the radius of which is equal to the dimension from the center of the shaft 17 to the thickest part of the mold, as appears in Fig. 5. The spout 52 has a duct or channel 53 communieating with the channel 48, and in this spout a cylindrical chamber 54 is formed which extends the entire length of the spout. This chamber is closed by a lip 55, which can seat on an extension 56, forming the bottom of the spout, the free edge of the lip 55 and the extension 56 being curved on precisely the same radius as the outer faces of the molds on the drum 18. This lip is mounted loosely on a shaft 57, extending lengthwise through the cylindrical recess 54 and through the closed ends of the spout, as appears in Fig. 14, and on this shaft is secured a semicylindrical plunger 58, contained within the recess 54. The shaft 57 carries at one end a pinion 59, which is engaged by a vertically-moving rack 60, guided to reciprocate longitudinally in guides 61, as shown in Fig. 3, and connected at its upper end by a connecting-rod 62 with a crank 63 on one end of the shaft 35, mounted in the brackets 36 on the pot 37. To the top ofthe lip 55 a rod 64 is pivoted and extends into the lower open end of a cylinder 65, pivoted to the under side of one of the brackets 36 and containing a helical cushion-spring 66, the upper end of which bears against the closed end of the cylinder 65 and the lower end of which rests on a collar 67 of the rod 64. The top of the lip 55 is also connected by a connectingrod 68 with the lower end of a U-shaped camlever 69, pivoted to a bracket 70 of the melt ing-pot to swing up and down, which lever 69 carries at its upper end an antifrictionroller 71. This antifriction-roller runs on an eccentric or cam disk 72, loosely mounted on the shaft 35 and provided with clutch-teeth 73 for engagement with one side of a clutch 74, which is mounted to turn with and to slide lengthwise on the shaft 35. This clutch 74 is mounted to turn in a circular frame 75, pivoted to the melting-pot to swing laterally. This frame 75 is provided with an arm 76, at the free end of which an extension-arm 77 is pivoted, which is held in alinement with the arm 76 by two flat springs 78, secured to the opposite sides of the arm 76. Mechanisms for tripping this arm are provided and will be described later on.

The clutch 74 when disengaged from the clutch-teeth of the cam 73 is engaged with the clutch-teeth of an eccentric disk 79, mounted loosely on the shaft 35 and surrounded by a strap 80, which is connected by a rod 81 with a cross-bar 82 on the top of the frame 46, in which the pot 37 swings, so that when said eccentric disk 79 is rotated the melting-pot is moved toward the left, Fig. 5, and its nozzle brought in close contact with one of the molds or is moved from the molds. The shaft 35 is driven from the shaft 32, and as the shaft 35 is supported by the melting-pot, which moves to and fro, a universal-joint connection in the connecting-rod 34 becomes necessary to allow such movement.

The drum 18, which, as shown, is six-sided, carries on each side a mold composed of the body of the mold 83 and a cover-plate 84, which cover-plate is removable from the bodyplate in the direction of the radii of the drum.

The body-plate of the mold is provided in its under side with a recess 85, Fig. 5, of sufficient depth and other dimensions to receive the matrix 86 from which the stereotypeplates are to be cast. The ends of the bodyplate of the mold are shaped as shown in Fig. 8, the end parts 87 of the body-frame of the mold overlapping the end parts of the matrix. The body-plate of the mold is provided at each end with a rack-arm 88, extending radially to the drum, and these rack-arms each engage a toothed segment 89, of which one is mounted on each end of each of a series of shafts 90, extending lengthwise through the drum 18 at each side and slightly at one side to the longitudinal center of theside. It is evident that when these segments 89 are turned the rack-arms 88 will be moved outward radially and lift the body of the mold with them and off the matrix, as shown in Fig. 8, so as to permit of inserting or removing a matrix. Each shaft 90 is provided at one end with a squared head 91, adapted to enter into the corresponding socket 92 of a key-shaft 93, which is suitably mounted in the machineframe and pressed in the direction from the ends of the shafts 90 by a spring 94:. The shaft 93 is provided at its outer end with a handle 95 for turning it, and thishandle is locked in place. by a spring-latch 96. WVhen the body-plates of the molds are to be raised off the sides of the drum 18, the upper end of the locking-lever 96 is pressed toward the handle 95, whereby the shaft 93 is moved lengthwise toward the end of the shaft 90 and engaged therewith. Then the moved in such a manner as to turn the shaft 90 and lift the corresponding body portion of the mold off the side of the drum. Of course this only becomes necessary when any matrix on the drum is to be replaced by another.

Each mold is provided on its upper surface with alongitudinal recess or opening the side edges of which are inclined inward and downward, and which opening can be closed by a cover-plate 84: fitting therein, the outer surface of the said covering-plate being curved on the same radius as the upper surface of the body-plate of the mold. Vhen a coveringplate is within the opening in the mold, the outer surfaces of the body-plate and coveringplate form one continuous segmental line concentric with the center of the shaft 17 as appears in Fig. 5, and when the covering-plates are thus within the body-plates of the molds a space 99 is left between the inner flat surface of the cover-plate and the exposed surface of the matrix, thethickness of which space is equal to the thickness of the stereotype-plate produced, and the dimensions of which recess are equal to those of the stereotype-plate as the same is cast and before it is trimmed off. Part of one side edge of each cover-plate 84c is cut away to form a pouring-slot 100, as shown in Figs. 2 and 5. From each end of each handle is cover-plate 8 1 a shaft 101 extends in the direction of the length of the plate, and on the outer end of each shaft a cam-roller 102 is loosely mounted, which is adapted to travel on a cam-track 103, formed in one of the side plates 104: of the machine-frame. Adjacent to the cam-roller 102 a cog-wheel 105 is loosely mounted on each shaft 101 and at one end of the plate 8-41 is provided on its inner face with notches into which a spring-bolt 106 can pass, which is mounted to slide in a head 107, of which one is provided at each end of the cover-plate, and each of these heads 107 is provided with an inwardly-extending arm 108, which arms stand radially to the drum and are mounted to move therein and each of which arms carries a roller 109 at its inner end on which arms tappets110 can act, which project from sleeves 111, loosely mounted on the shaft 17 of the drum 18, (shown in Fig. 6,) which sleeves 111 are each provided at their outer end with a crank-arm 112, which crank arms are connected by connectingrods 113 with cranks 11 1 on the shaft The cam-track 103 is curved on a circular line concentric with the shaft 17 along its inner and outer edges from the point a, Fig. 4, at the top to the point 7) to the right of the bottom. Adjacent to the point (6 a raisedpart 115 is formed at the inner edge, of which a short inwardly-extending beveled shoulder 116 is formed, and likewise the raised part 117 is formed adjacent to the point 7), and at its inner end an inwardly-inclined beveled shoulder 118 is formed. The radius of that part of the cam-track between the shoulders 116 118 is greater than that of the part between the points a and 7). At the point (Z there is an opening in the outerrim of the cam-track. which is closed by a radially sliding piece 119, which is pressed inward to close the outer rim of the cam-track by bow-springs 120 bearing on it and on suitable lugs 121 of the side plate 10 1, as shown in Fig. A. From the inner surface of each of the said plates 10 1 two

segmental racks

122 and 123 extend so as to be in the same vertical plane with the cogwheels 105 on the ends of the cover-plates 84:, so that when these cover-plates are pressed out radially sufficiently to engage the cogwheels 105 with the

racks

122 and 123 said cover-plates will be rotated on the axes of the said cog-wheels---that is, on the shafts 101 one-half a turn. For example, referring to Fig. 3, if the drum 18 turns in the direction of the arrow in the cover-plates will be given one-half a turn, when their wheels 105 engage the racks 122 and remain in this position, which is the reverse of their position in the bodyplates of the molds until the corresponding wheels engage the racks 123, where'- by the cover-plates are reversed and brought back into the original positions. So as to prevent the spout of the castingpot 37 from striking forcibly on the molds the pot is provided at each side with a lug 124, which can swing between adjustable stopscrews 125, mounted in lugs 126 of the frame 46, between which the pot swings.

On that end of the shaft 17 opposite the one carrying the notched wheel 16 a cogwheel 127 is keyed, which engages a cog-wheel 128 of one-half the diameter of the wheel 127 and secured on the shaft 129, carrying the drum 130, on which the'cast plates are finished and trimmed. This drum 130 is a threesided drum and makes two turns for every turn of the drum 18. In order to trim; finish, and plane the back of the stereotype-plate that has been cast on the drum 18, it is necessary to reverse the same and to transfer it to the finishing-drum 130 and automatically secure it on the same. As the back of the stereotype-plate is the one which is to be planed and finished and the face is the one exposed while on the drum18, it becomes necessary to reverse the plate--that is to say, to give it a turn of one hundred and eighty degrees before it is transferred upon the drum 130.

The three sides of the drum 130 are each formed by a longitudinally radially projecting part 131, in each of which a longitudinal shaft 132 is journaled, which extends from end to end and projects beyond each end. On one end of each shaft 132 a beveled cog-wheel 133 is secured, which engages a beveled cogwheel134, secured on a short transverse shaft 135, mounted in brackets 136 on the adjacent end of the drum 130. On that end of each shaft 135 opposite the one carrying the bev' eled cog-wheel 134 a cog-wheel 137 is loosely mounted and carries aspring-pawl 138, which is engaged with a ratchet-wheel 139, fixed on the outer end of the shaft 135, as is clearly shown in Fig. 3. In each end of each projecting part 131 a clamping-jaw 140 is mounted to slide lengthwise of the drum 130 and serves for clamping the ends of the stereotype-plates 141, as shown in Fig. 13. On each shaft 132 right and left screw-threads 142 and 143 are formed adjacent to the ends, and on each screw-threaded part a sleeve 144 is mounted, with which the corresponding jaw 140 can be connected by a screw 145. In order to adjust these clamping-jaws very finely, the screws 145 are withdrawn, the jaws are adjusted, and then the shaft 132 is turned until the screw 145 can be secured into the corresponding sleeve 144. It is evident that when a shaft 132 is turned in one direction the corresponding clamping-jaws will be moved from each other, and when it is moved in the opposite direction they will be moved toward each other. As there is a possibility that in working the machine the jaws might be moved too far apart, provision is made for uncoupling the means for turning the shaft 132 when the jaws have been separated the requisite distance. For this purpose that end of the shaft 132 opposite the one carrying the bevel cogwheel 133 is shaped to enter a clutch-sleeve 146, carrying a cog-wheel 147. An arm 148 from the corresponding jaw 140 extends into an annular groove in this clutch-sleeve. hen the jaws 140 have been moved from each other as far as is necessary to release the plate that was held, the clutch-sleeve 146 is automatically disengaged from the shaft 132, as the righthand. jaw 140 in moving outward has forced the clutch-sleeve 146 outward or to the right, Fig. 13, sufficiently to disengage it from the shaft 132. Therefore, any continued turning of the cog-wheel 147 from the devices provided for so turning it can have no effect.

The carriage 150 is mounted to reciprocate horizontally between guides 151 of the machine-frame, which guides are located above the drum 130, and this carriage 150 is pivotally connected with the connecting-rod 24, which in turn is pivotally connected to the crank 23, Fig. 2, so that as the said crank makes one-half a turn the carriage will be moved over the drum 130 in the direction from right to left and back again. A toolholder 152 is pivoted to the carriage 150 and carries tools 153 for planing the exposed face of the stereotype-plate 141 and also for trim ming the side edges. In advance of the toolcarrier 152 spring-pressure rollers 154 are provided on the carriage 150, which ride upon the exposed surface of the stereotype-plate and hold the plate down on the drum 130 during the movement of the carriage over said plate. The carriage 150 is provided with a downwardlyextending bracket 155, on the bottom of which an inwardly-extending short rack 156 is formed, which just before the carriage 150 completes its stroke to the left engages the cog-wheel 137, corresponding to that shaft 132 which is now in the lower right' hand position and rotates the same, whereby by means of the pawl 138 and ratchet-wheel 139 the shaft 135 and by means of the

cogwheels

134 and 135 the corresponding shaft 132 is rotated in such a manner as to cause the corresponding jaws 140 to move toward each other and clamp the ends of the stereotypeplate, which has just been deposited in reverse position from the drum 18 upon the drum 130. During the return stroke the rack 156 also engages this same cog-wheel 137, but without effect, because the pawl 138 slides over the ratchet-wheel 139 without engaging it. A rock-shaft 157, mounted on the machine-frame, is provided with a crank-arm 158, which is connected, by a connecting-rod 159, with the rocking-arm 13 on the shaft 12, as shown in Fig. 9. At its inner end the shaft 157 carries an arm 160, terminating in a segmental rack 161, engaging a cog-wheel 162, mounted loosely on the shaft 129, adjacent to one end of the drum 130, and this cogwheel has a sleeve 162, provided with an arm 163, provided on its free end with an upwardly- IIO extending curved rack 164, which is in the l paths of the cog-wheels 147 on the right-hand ends of the shafts 132 of the drum 130. When the arm 13 rocks to the right, Fig. 9, to get a fresh hold on the disk 16, the rack 161 sweeps over the cog-wheel 162, whereby the arm 163 and rack 164 are rocked, which latter turns the shaft 132 in such a manner as to move the jaws 140 from each other, whereby the plate held by them is released and dropped. When the arm 13 swings to the left, Fig. 9, it also turns the cog-wheel 162, but without any effect on a wheel 147, as no wheel is now in the path of or engaged with the rack 164.

The carriage 150 is provided with an upwardly-extending tripping-arm 166, which can strike against the side of the arm 77 during the to-and-fro movements of said carriage. hen the carriage 150 moves to the left, Fig. 2, it throws the levers 76 77 to the left and engages the clutch 74 with the clutch 73 and disengages it from the eccentric 7 9. Then as the carriage continues to move to the left it bends the arms 77 until the same slides off the tripping-arm 166 and the springs 78 bring the two hinged arms 76 77 in line again. \Vhen the carriage 150 moves to the right, Fig. 2, it throws the arm 77 to the right and engages the clutch 74 with the eccentric 79, and so on alternately.

\Vhile the casting on one drum and the plan ing of a previously-cast stereotype-plate on the other drum take place, it is necessary that both drums should be locked against movement, and for this purpose a locking-disk 168, provided with six equidistantnotches 169, is secured on the shaft 17 and a like disk 170, provided with three equidistant notches 171, is secured on the outer end of the shaft 129 of the drum 130. A rock-shaft 171 on the machine-frame carries two locking-arms 172 and 173, which can pass into the notches 169 and 171, respectively, and thus lock both drums. This rock-shaft 171 has a downwardly-extending arm 174, which is connected by a rod 175 with a lever 176, pivoted to a short arm 177 on the main frame, and this lever 176 is connected by alink 178 with the casting-pot support 44, so that as the casting-pot swings to the right, Fig. 9, to make the casting, the two locking-arms 172 and 173 are pressed into notches in the disks 168 and 170, respectively. So that this locking does not jolt and jar the machine a cushion-spring 179 is provided on the rod 175.

The operation is as follows: Assuming that the arm 13, Fig. 9, has just completed its stroke to the left, then the clutch 19 has been thrown in gear with the cog-wheel 22 and the shafts 32, 34, and 35 are rotated, and at the same time by means of the connecting-rod 24 the carriage 150 is moved lengthwise over the drum 130 from right to left, Fig. 2, the two

drums

18 and 130 being locked in position. By the rotation of the shaft 35 the castingpot is moved to the left, Fig. 5, so as to bring the edge of the spout and lip 55 in close contact with the surface of the adjacent mold on the drum because the clutch 73 is engaged with the eccentric disk 79. By the time that the casting-pot has traveled this distance the tripping-arm 166 is disengaged from the arm 77 and the eccentric 79 no longer participates in the movement of the shaft 35, and therefore the casting-pot remains at rest with the end of its spout and lip in contact with the mold at that part provided with the inlet-slot 100. As soon as the clutch 74 has been disengaged from the eccentric 79 it is engaged with the clutch 73 of the cam 72 and remains so engaged, and thereby the lip 55 is raised slightly. By that time the crank-arm 63 of the shaft 35 has acted upon the rack 60, whereby the semicylind rical plunger 58 makes a turn from left to right, Fig. 5, shutting off the supply of metal from the casting-pot and forcing the metal contained in the recess 54 through the opening contained between the lip 55 and the spout 56 into the inlet-slot 100 of the mold and through the same into the mold, which is thus completely filled. On the return stroke of the carriage 150 the semicylindrical plunger 58 is moved back and the lip 55 at the same time forced down, so as to prevent the escape of molten metal. Then when the tripping-arm 166, during its stroke from left to right, Fig. 2, trips the lever '77 it disengages the clutchon the cam 72 from the clutch 74 and engages the latter with the eccentric 79, which is now turned by the shaft 35 in such a manner as to swing back the casting-pot into the position shown in Figs. 3 and 5, and in these respective positions all the parts remain until the next stroke forward and backward of the carriage 150. By the time the carriage 150 has completed its stroke to the right, as shown in Fig. 2, the cam 29 has disengaged the clutch 19 from the the cog-wheel 22, and therefore the reciprocating carriage 150 and also all parts driven from the beveled cog-wheels 22 31 that is, the casting-pot and its accessories-remain at rest, and now the

drums

18 and 130 are unlocked. The arm 13 now swings in the direction of the hands of a clock, Fig. 9, and turns the drum 18 one-sixth in the same direction and at the same time the drum 130 is turned one-third in the reverse direction. By this motion the camwheel 102, which is shown at 7) on Fig. 4, rides upon the projection 117, whereby the entire cover-plate 84 is moved outward radially, as shown in the lower left-hand part of Fig. 5, and the corresponding cog-wheel 105 is engaged with the lower rack 122, as shown in Fig. 5, and thereby said cover-plate is turned on the axes of its cog-wheels and reversed and in this reversed position travels up to a point midway between the racks 122 123, and in so doing it travels on that part of the cam-track having the greater radius. By the time it arrives in the position shown in the upper left-hand corner of Fig. 4. the sleeves 111 are rocked, and the tappets 110, striking the rollers 109 on the inner ends of the arms 108, force these arms outward radially, 'whereby the corresponding reversed covering-plate which carries the cast-plate is forced in contact with one of the pieces 131 of the drum 130, as shown in Fig. 5, at the upper left-hand corner. The parts thenremain in this position and are locked and another casting is made in the manner previously described. The drums begin to turn again and the cover-plate 84 in question moves to the position shown at the top in Fig. 5, and in so doingits cog-wheels 105 travel over the racks 123 and the cover-plate is again reversed and brought into its original position, and then the cam-rollers of this coveringplate run down the shoulder at (0, whereby the cover-plate is broughtback into its mold and closes the mold, so as to adapt the same to receive the metal at the next position of rest of the drum 18. At the first position of rest a mold is filled. At the second and third positions of rest nothing takes place in the mold and the latter is permitted to cool. At the beginning .of the fourth position the mold-cover is forced outward and the cover reversed. At the fifth position of rest the plate in question is transferred to the roller 130, and at the sixth position of rest the cover is transferred back into its original position and into the mold, and so on. The tappets 110, which serve to force the reversed cover outward, are operated at the proper time from the shaft 7 by means of. the cam 28 and the intermediate connection. Whenever a cast plate has been transferred from the cylinder 18 to the cylinder 130, both cylinders are brought to rest; but the planing and trimming mechanisms are operating. Immediately after a plate has been transferred. from the drum 18 to the drum 130 the corresponding shaft 132 is turned axially in the manner described by the rack 156 on the carriage 150, and this looks the plate. During the next rotating motion of the two drums the plate is brought into the top position and during the succeeding period of rest of the drums is planed and trimmed by the devices on the carriage 150. Then during the next rotating movement of the drums the plate is brought into the lower left-hand position of Fig. 3, and during the next casting operation-that is, the period of rest of the two drums-the plate is thrown off by opening the jaws 140 in the manner described, and at the next turn of the drums that part of the drum 130 from which the plate has just been dropped is brought in position to receive another reversed plate from the drum 18, and so on. In order that the machine can operate in the manner above described, the

shaft 7 must make one rotation for every two rotations of the shaft 2, the sleeve 21, carrying the crank-arm 23, must make one rotation with the shaft 2 and remain at restduring the second rotation of the shaft 2, and the shaft 35 must make two rotations for every rotation of the sleeve 21. During the first rotation of the shaft 2 the two drums are rotated. During the second rotation of the shaft 2 the drums are locked and the sleeve 21 is rotated once and the carriage 150 is moved forward and back over a plate. By the first rotation of the shaft 35 the pot 37 is moved toward the mold and the lip 55 moved and the plunger 58 forced down, and by the second rotation of the shaft 35 the lip 55 is forced down, the

plunger raised and the pot swung back, and so on.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a stereotype casting and finishing machine, the combination with a casting-pot, of a movable mold-carrier, a movable plate-holder, means for autdmatically transferring the plates from the mold-carrier to the plate-carrier, and means for trimming and finishing the plates on the plate-carrier, substantially as set forth.

2. In a stereotype casting and finishing machine, the combination with a casting-pot, of a movable mold-carrier, means for forcing the molten metal into the molds, a movable platecarrier, means for automatically transferring the plates from the mold-carrier to the platecarrier, and means for planing and finishing the plates on the plate-carrier, substantially as set forth.

3. In a stereotype casting and finishing machine, the combination with a casting-pot, of a movable mold-carrier, means for reversing the plates cast on said mold-carrier, a movable plate-carrier, means for automatically trans ferring the plates from the mold-carrier to the plate-carrier, and means for finishing the plates on the plate-carrier, substantially as set forth.

4. In a stereotype casting and finishing machine, the combination with a casting-pot, of a movable mold-carrier, means on the mold-carrier for reversing the plates cast thereon, a movable plate-carrier, means for automatically transferring the plates from the mold-carrier to the plate-carrier, and means for planing and trimming the plates on the plate-carrier, substantially as set forth.

5. In a stereotype casting and finishing machine the combination with a casting-pot, of a movable mold-carrier, means for intermittently moving said mold-carrier, a plate-carrier, means for transferring the plates from the mold-carrier to the plate-carrier, and means for planing and trimming the plates on the plate-carrier, substantially as set forth.

6. In a stereotype casting and finishing machine, the combination with a casting-pot, of a movable mold-carrier, means for intermittently moving the mold-carrier, a plate-carrier, means for moving the plate-carrier from the mold-carrier, means for transferring the plates from the mold-carrier to the plate-carrier, and means for planing and trimming the plates on the plate-carrier, substantially as set forth.

7. In a stereotype casting and finishing machine, the combination with a casting-pot, of a movable mold-carrier, means for intermittently moving said mold-carrier, a movable plate-carrier driven from the mold-carrier, means for locking the mold and plate carriers in place at intervals, and means for planing and trimming the plates on the plate-carrier, substantially as set forth.

8. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the sides of the drum, covers for said molds,radial slides in the drum, to which slides the covers are pivoted, and a cam-track for moving said slides radially, substantiall y as set forth.

2). In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the sides of said drum, covers for said molds, radially-movable slides in the drum to which slides the ends of the covers are pivoted, cam-rollers on the ends of said covers, and cam-tracks on which said rollers can run, substantially as set forth.

10. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the sides of said drum, covers for said molds, radially-movable slides in the drum to which slides the ends of the covers are pivoted, cam-rollers on the'ends of said covers, cam-tracks on which said rollers can run, and tappets for forcing said molds outward radially, substantially as set forth.

11. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the sides of said drum, covers for said molds, radially-movable slides in the drum to which slides the ends of the covers are pivoted, cam-rollers on the ends of said covers, cam-tracks on which said rollers can run, tappets for forcing said molds outward radially, and means for operating said tappet-s automatically, substantially as set forth.

12. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the sides of said drum, cover-plates for said molds, radiallymoving slides in the drum to which slides the ends of the cover-plates are pivoted, rollers on said covers, cam-tracks for said rollers, cog-wheels connected with the covers, and toothed segments on the cam-track for engagement with the cog-wheels on the cover, substantially as set forth.

13. In a stereotype casting and finishingmachine, the combination with a castingpot, of a drum, molds on the sides of the drum, covers for said molds, cam-tracks, means for moving the mold-covers radially in relation to the drums and holding them in this extended position during part of the rotation of the drum, substantially as set forth.

14:. In a stereotype casting and finishing machine, the combination with a casting-pot, of a drum, molds on the sides of the drum, covers for said molds, cam-tracks, means for moving the mold-covers radially in relation to the drum, and holding them in this extended position during part of the rotation of the drum, means for reversing the cover-plates while held in the extended position, substantially as set forth.

15. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the sides of the drum, cover-plates for said molds, cam-tracks for moving said cover-plates radially in relation to said drum, and holding them thus extended during part of the rotation of the drum, means for reversing the mold-covers after they have been moved outward radially, and means for again reversing mold-covers and moving them inward radially, substantially as set forth.

16. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the sidesof the drum, cover-plates for said molds, cam-tracks for moving said cover-plates radially in relation to the drum, and holding them thus extended during part of the rotation of the drum, means for reversing the molds after they have been moved outward radially, and means for again reversing the mold-covers and moving them inward radially, and means for forcing said cover-plates outward radially, a still greater distance while reversed from the position which they have when closing the mold, substantially as set forth.

17. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on said drum, coverplates for said molds, and means for lifting said molds and cover-plates off the sides of the drum, substantially as set forth.

18. In a stereotype casting and finishing machine, the combination with a rotative drum, of molds on the sides of the drum, cover-plates on said molds, racks connected with said molds, toothed segments engaging the racks, shafts in said drums on which shafts the toothed segments are secured, and means for turning said shafts, substantially as set forth.

spring for holding said part in the cam-track, and a tappet mechanism for forcing the moldcovers against said movable spring-pressed part of the cam-track, and forcing it outward with the mold-cover, substantially as set forth.

20. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the same, a second drum driven from the first drum, means for transferring the plates cast on the first drum automatically upon the second drum, means for finishing the plates while held on the second drum, means for automatically locking both drums during the casting operation on one drum, and the finishing operation on the other, and means for stopping the casting and finishing devices pertaining to the two drums during the time that the drums are being rotated, substantially as set forth.

21. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the same,a second rotative drum coacting with the first, means for carrying the plates from the drum provided with the molds upon the second drum, and plate-clamping devices 'on this second drum, substantially as set forth.

22. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the same, a second rotative drum coaeting with the first, means for carrying the plates from the drum pro vided with the molds upon the second drum, plate-clamping devices on this second drum, and means for automatically closing said clamping devices when a plate has been transferred, substantially as set forth.

23. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the same, asecond rotative drum coacting with the first, means for transferring the plates from the drum provided with the molds upon the second drum, plate-clamping devices on this second drum,

-means for planing and trimming the plates,

and means for automatically releasing the plates when the planing and trimming operations are completed, substantially as set forth.

24:. In a stereotype casting and finishing machine, the combination with a casting-pot, of a rotative drum, molds on the same, a second drum driven from the first drum, means for transferring the plates cast on the first drum automatically upon the second drum, plateclamping devices on the second drum, a reciprocating carriage mounted to pass over the second drum, and means on said carriage for closing the plate-clamping devices, substantially as set forth.

25. In a stereotype casting and finishing machine, the combination with a swinging casting-pot, of a drum, molds on the same, a rotative shaft mounted on the casting-pot, means for rotating said shaft, an eccentric disk on said shaft, a strap surrounding said disk, and a fixed bar to which said strap is connected, substantially as set forth.

26. In a stereotype casting and finishing machine, the combination with a swinging casting-pot, of a rotative drum, molds on the same, a rotative shaft mounted on the castingpot, an eccentric on said shaft connected with a fixed support, a clutch on the shaft, and means for automatically throwing said clutch in engagement with the eccentric, substantially as set forth.

27. In a stereotype casting and finishing machine, the combination with a swinging casting-pot, of a rotative drum, molds on the same, a rotative shaft on the casting-pot, a plunger for forcing the metal'from the casting-pot into the molds, and means for operating said plunger from the shaft on the casting-pot, substantially as set forth.

28. In a stereotype casting and finishing machine, the combination with a swinging casting-pot, having a spout, of a pivoted lip on said spout, a rotative shaft on the castingpot, and a cam and connections between said lip and the cam for operating the lip from said cam, substantially as set forth.

29. In a stereotype casting and finishing machine, the combination with a swinging casting-pot, of a rotative drum, molds on the same. of a rotative shaft on the casting-pot, a double clutch on said shaft, an eccentric at one side of said clutch, which eccentric is connected with a fixed support, a cam on the other end of said clutch, a lip hinged on the spout of the casting-pot, and connections between said lip and the cam on the shaft for operating said lip, substantially as set forth.

30. In a stereotype casting and finishing machine, the combination with a swinging casting-pot, of a rotative drum, molds on said drum,a second drum upon which the cast plates are transferred from said mold-drum, a reciprocating planer-head above the second drum, a rotative shaft on the pot, a clutch on said shaft, an eccentric on said shaft and connected with a fixed support, and means for throwing the clutch in and out of gear with the said eccentric from said planer-head, substantially as set forth.

31. In a stereotype casting and finishing machine, the combination with a swinging casting-pot, of a drum, molds on said drum, a second drum, a reciprocating planer-head above said second drum, and means for causing the swinging motion of the pot from this planer-head, substantially as set forth.

32. In a stereotype casting and finishing machine, the combination with a swinging pot having a spout, of a lip on said spout, a shaft on the pot, a clutch on said shaft, an eccentric for swinging the pot mounted on said shaft, a cam for operating the lip on said shaft, a drum carrying molds, a second drum for Supporting cast plates, a reciprocating planerhead above said plate-supporting drum, and means for alternately throwing the clutch on the shaft on the pot in engagement with the eccentric for swinging the pot and with the cam for operating the lip, substantially as set forth.

33. In a stereotype casting and finishing machine, the combination with a casting-pot, of a spout, a semicylindrical plunger in said spout, a lip on said spout, a shaft on the pot, and means for operating said lip and plunger from said shaft, substantially as set forth.

34. In a stereotype casting and finishing machine, the combination with a metal-pot, of a drum, molds on the drum, the outer faces of said molds being curved transversely concentric with the axis of the drum, substantially as set forth.

35. In a stereotype casting and finishing machine, the combination with a casting-pot, of a drum, molds on the drum, cover-plates in the molds, which molds and cover-plates are curved transversely concentric with the axis of the drum, substantially as set forth.

36. In a stereotype casting and finishing machine, the combination with a drum, of molds thereon, which are curved on their outer faces transversely concentric with the axis of the drum, a casting-pot having a spout the edge of the spout being curved transversely concentric with the drum, substantially as set forth.

37. In a stereotype casting and finishing machine, the combination with a drum, of molds thereon, which molds are curved transversely concentric with the axis of the drum, a casting-pot having a spout, a pivoted lip above said spout, the free edge of which spout and lip are curved transversely concentric with the axis of the drum, substantially as set forth.

38. In a stereotype casting and finishing machine, the combination with a casting-pot, of two drums, molds on one drum, a planerhead mounted to reciprocate over the other drum, means for locking both drums in place, means for operating the planer-head when the drums are locked, means for ejecting metal from the pot into the molds, means for operating said ejecting means when the drums are locked, means for reversing the cast plates on the mold-drum, means for clamping the reversed plates on the drum below the head, and means for automatically bringing said reversing and clamping devices into action when the drums are unlocked and rotated, substantially as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 16th day of January, 1903.

BENJAMIN F. CURTIS.

Witnesses:

OSCAR F. GUNz, ELLA OETJEN.