US507638A - Eotaey beige peess - Google Patents

Description

(No Model.) 4Sheets-Sheet 1. F. L. H. SIMS.

ROTARY BRICK PRESS.

N0. 507,638. Patented Oct. 31,1893.

(No Model.) 4 SheetsSheet 2.

P. L. H. SIMS. ROTARY BRICK PRESS.

N0. 5017,638. Patented Oct. 31, 1893.

F WEE HEWN (No Modl.) I 4 Shets-Sheet 31 F. L. H. SIMS. ROTARY BRICK PRES-S.

No. 507,638. Patented Oct. 31,1893.

74 5361136666 jU QIUJOP.

* (No Model.) 4 Sheets-Sheet 4.

P. L; H. SIMS. ROTARY. vBRICK PRESS.

N0.-507,638. Patented Oct. 31,1893.

FFICE.

PATENT FREDERICK L. H. SIMS, OF TORONTO, CANADA.

ROTARY BRICK-PRESS.

SPECIFICATION forming part of Letters Patent N 0. 507,638, dated October 81, 1893.

Application filed June 26, 1892- Serial No. 437,993. (No model.)

To all whom it may concern..-

Be it known that I, FREDERICK LINDLEY HUNT SIMS, machinist, of the city of Toronto, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Rotary Presses, of which the following is a specification.

My invention relates to improvements in rotary presses patented to me on the 11th of August, 1891, in the United States of America, under No. 457,381, and the object of the invention is to simplify the operation and increase the efficiency of the working parts in order that the out put of the machine may be very materially augmented and it consists essentially in the peculiar arrangement, construction and operation of the doors, plungers and feeder as hereinafter more particularly explained.

Figure 1, is a perspective sectional view on the line ac-y Fig. 2. Fig. 1 is a detail view partly in section showing the swinging door and the means for operating the same. Fig. 2, is a cross section of the machine. Fig. 3, is an end elevation of the machine with the gear wheel removed. Fig. 3" is a diagrammatic plan view of the door controlling groove V showing the action of the doors. Fig. 4, is a side elevation of the cam. Fig. 5, is a cross section through the line of dead centers of .Fig. 4, looking upward. Fig. 6, is a detail of the door.

In the drawings like letters and numerals of reference indicate corresponding parts in each figure. n

A, A, are the main gear wheels which are driven from gear pinions deriving motion from any suitable motive power and, B, is the main shaft of the machine which is supported and held stationary in suitable standards forming part of the frame of the machine.

0, G, are sleeves secured to the shaft, B, and extending inwardly as far as the outer face of the hubs of the stationary cams, D. The portions of the sleeves, O, O, which extend through the hub of the gear wheels, A, A, are eccentric to the center of the shaft, B, as indicated by dotted lines in Fig. 3. The portions, 0, c, of the sleeves, C, O, which extend between the inner side of the hub of the wheels, A, A, and the outer face of the cam are concentric to the shaft, B, (see also Fig.

the bolts are threaded and are secured together so as to bind the two halves of the drum by the right and left hand threaded coupling, e. The web or spokes, E, of the drum are formed at the outer end or faces and extend into the hub, E.

E are ribs extending from the hub to the rim of the drum as shown. The two hubs, E are journaled on the concentric portions, 0, c, of the shaft, A.

The drum, E, has formed upon it a lug or projection, F, which has a slot, f, made in it through which extends a pin,f', secured in the face of the wheel, A, as shown in Fig. 3.

G, are molds which are formed in pairs in the drum, E, in the inwardly projecting portion.

H, are the plungers which are provided with a top plate, h, corresponding in diameter to the interior diameter of the molds. The pairs of plungers have a shaft, I, extending through their lower portions, as shown.

J, are rollers journaled on the shaft, I, on each side of the plunger H. These rollers are designed to ride on the peripheries of the stationary cams, D.

K, is a downwardly extending projection formed at the lower end of the plunger, H,,

and having rollers, It, journaled one at. each side of the projections as shown. These rollers, in, are designed to come in contact with I the flange, d, and pull the plungers back into position so as to be ready for the reception of the material.

On reference to Fig. 4, it will be seen that the cam, D, is of peculiar construction, the

portion from, 1, to, 2, being concentric to the center, 8, of the shaft, B; and beginning at 2 there is a sudden rise for a short distance, after which the periphery of the cam consists of a gradual rise until the point 3 is reached. From, 3, to, 4, the portion of the periphery of the cam is described from the center, 9, with just sufficient rise that a constant pressure may be maintained on the plunger, H. From, 4, to, 5, is formed a depression and from, 5, to, 6, a rise in the cam of increasing radii from the center 8, the radius at the point, 6, be-

ing longer by a little more height of the brick than the radius at the point, 5, added to the dep h of the depression between, 4:, and, 5. The portion from the point, 6, to the point, 7, on the periphery of the cam is concentric to the center, 8, and the periphery from the point, 7, to the point 1, is acurve of constantly decreasing radii from the center, 8.

The object of the peculiar construction of the cams I have now described is as follows: The periphery of the portion of the cam from, 1,to, 2, is made concentric to the center of the stationary shaft in order to allow the mold to be filled and the doors to be closed as hereinafter described by holding the plungers at a uniform height in the mold. The periphery of the portion of the cam from, 2, to, 3, isconstructed so that the plungers will very rapidly rise in the mold when the material is loose and thereby force all the air through the ma-v terial to the top of the mold where it would be expelled through the air vents similar to that described in my former patent.

understood that this arrangement of constantly varying radii and archmedian spirals of decreasing dimensions will be varied in'the construction of the cam of each machine according to the material which it is designed to press. The portion of the periphery of the cam from, 3, to, 4, is as before stated of a very slight rise from the center, 8, and is so constructed as to maintain the pressure during the period that the door is retreating owing to the eccentric motion of the gear wheels.

The depression from, 4, to, 5, is made soas to relieve the pressed block or billet entirely from the pressure of the plungers and allow time for the opening of the door, while the lugs are withdrawing the door, and the rise in the cam from, 5, to, 6, in order to throw the I plunger outwardly so as to deliver the brick upon the endless belt, 12, and at the same time throw the plungersuifieiently far out so that it projects beyond the periphery of the drum and thereby allows of the top of the plunger being brushed off and oiled. The portion of the periphery from, 6, to, 7, is designed to keep the plate of the plunger out a little beyond the periphery of the drum so as to allow of it being brushed off and oiled as it passes the brushes and oil-pad, and the periphery of the portion from, 7, to, 1, is designed to allow the plunger to be drawn back to the bottom of v the mold, the flanges, (1, being formed at this portion of the peripheries of each cam so as to come between the rollers, 7c, journaled on each side of the projections, K, of the flanges.

As before stated the rollers, J, are journaled on the shaft I, to which the plungers, H, are keyed. The shafts, I, extend from end to end of the drums and are tenoned at the ends so as to fit within the slots, 6 When the plunger-s are thrown from bottom to top of the mold the ends of the shaft, I, move within the slots, e

As my press is designed to be used for pressing ma terial of different density it will of course be.

In order to provide a means whereby the quantity of material fed may be regulated to any desired amount I provide a pivoted lifting dog, M, the-end of which extends beneath the projecting end K, of the plunger as shown in Fig. 1, in a position contiguous to the concentric upper portion of the cam. In order to raise this lifting dog, M, I provide a cam, N, which is secured 011 the rod, 01, which extends through the sleeve, O, to the outer end of the frame of the machine and is provided with a hand Wheel, n, whereby the cam may be turned so as to bring its end beneath the tail of the lifting dog, M, and thereby raiseit to any desired position. The rear end of the upper portion of the lifting dog, M, is designed to be practically concentric with the concentric portion of the cam no matter into what position it may be raised by the cam, N, and the flange upon reaching the point, 1, which is the beginning of the concentric portion of the cam, instead of having the rollers, .T, riding on the periphery of the cam may be immediately raised by the projecting end, K, engaging the lifting dog, 1W1, so as to bring the rollers above the concentric portion of the cam, D, and the plate of the plungers, then riding on the dog, M, farther up into the mold. As soon as the projection, K, has passed the end of the lifting dog, M, it drops and the rollers ride on the concentric portion. By this means it will be seen that the quantity of material may be regulated to a nicety and a pressed block or billet of any desired density may be made.

Although in describing the lifting dog and cam for operating the same I have described one only it will of course be understood that there are two dogs, M, one for each cam and two cams, N, on the same rod operating the dogs, M, as will be seen on reference to Fig. 2.

O, are brushes which are supported on the end of the lever P, and are held in contact with the periphery of the drum by the counter weights, Q. A

R, are pads which are supported on the same plate as the brushes, 0, and are supplied with oil through the tubes, 7', from the can, S, supported on the bracket, T, attached to or forming part of the concentric channel iron, U, which forms a groove for t he guidance of the rollers of the door.

V, are the feed spouts or hoppers through which the material is fed into the mold. The hoppers, V, are secured by bolts on to the back of the channel iron, U, which is secured at the bottom to the bed plate of the machine and at the top to the cross bar, W, extending above the wheel and secured to the top of the frame of the machine as shown in Figs. 1, and 2.

It will be noticed that the bottom of the feed hoppers V, fit very close to the periphery of the drum and have rearwardly projecting tails, 'v, and downwardly projecting slides, o. The diameter of the hoppers, V, at the bottom, is greater than at the top, the hopper IIO flaring out obliquely as shown. The slides, o, are connected to this obliquely flaring portion of the hopper by the bolts, X, which extend through the slots, 00, as shown.

Y, is a weight placed upon the shaft, 11 which is attached to or forms part of the slide, 4), and extends through the opening, Z.

The drum, E, has flat portions, E made across its periphery the width of the length of the molds so that the plates, 21, when the door, 13, is swung around into position over the top of the molds, have their edges coincident with the edges of the top of the mold.

Another advantage of the flat portions, E is that as the molds pass beneath the feed hoppers the slides, '0', pass quickly across the mold in a straight line or follow the chord of the arc of the circle of the drum and thereby leave the material in the mold flush with the flat portion, E of the drum. By this means the block or billet will be, when pressed, of equal density throughout.

In Fig. 1, I show the doors, 13, dotted in the position which they assume at different parts of their revolution with the exception of the door at the left hand side of the figure which is shown by full lines. The door at the top is in the position at which it is about to turn and close, one side of the groove, U, being cut away so as to allow one roller to pass through the opening, 14, while the other roller passes along the curved end of the groove and thereby rotates the door on its pivot pin, 15, so as to bring it directly against the shroud, 16, so that the plates, 21, on the door are directly above the molds, G. When the door is so closed it rests for an instant upon the lugs or projections, 16, extending from the faces of the gear wheels, A, A, and in this position the plates at the bottom of the door are ready to enter the mold so that when the eccentrically journaled gear wheels revolve they bring the bearing pieces, 17, closer to the center, 8, and the doors are forced by the bearing pieces, 17, so as to bring the plates into the mold. The inwardly extending bearings, 17, are flat as shown. The tops of the ends of the door are provided with rockingpieces, 18, the bottom of which are arc-shaped and fit into a corresponding recess in the door in which recess they are secured by the tapered pin, 19.

It will be noticed that the head of the pin is tapered as shown and extends through the rocking piece to thebottom of the recess and that the rocking piece has a slot made in it lengthwise. The slot being of the same width as the pin but being elongated permits of the rocking piece rocking slightly in its recess.

The ends of the rocking piece are rounded off-- as shown so that when the dooris being swung around by the curved end, U, it will tilt slightly so as to insure the rocking pieces coming beneath the ends of the bearing pieces as the door comes into position above the molds. When the door reaches the position above the molds it will, of course be understood that the top of the rocking pieces will be perfectly level and hold the'door sesurely in position.

When the door is open as shown in Figs. 1,

finished inner sides so as to permit the door to drop between them and are arc-shaped and narrow enough so as to permit the plates, 21, at the bottom of the door to sweep around without touching them. The pin 15, upon which the door is pivoted-has an annular groove, 22, made in it as shown.

23, are pins extending across the door. and

through the groove, 22, one at each side of the pin. The groove, 22, is of sufficient width so as to permit the door to be raised sufficiently far to throw it above the projections, 20, and the plates, 21, above the top of. the mold, the pins, 23, serving to prevent the door falling off the pin when it is at the bottom of the machine.

24, and, 25, are friction rollers journaled on pins secured on the top of the door and situated toward each end at equal distances from the center of the door. The rollers, 24,-and, 25, run in the channel-iron or groove, U. The leading roller, 25, comes in contact with the curved end, U, of the channel'iron or groove, U, so as to throw the door over themolds as above described and when it has reached the end of the groove it passes along the-edge,u, forming the end of the channel-iron. In the position thus thrown the door passes down until it reaches the otherend, U of the channel-iron, U, which is curved in the opposite direction as shown so that the other roller, 24, in striking against it follows the face of the end, U and throws the door open, the portion of the'channel iron or groove being cut away so as to allow the leading roller, 25, to swing into position so as to enter the chan nel iron, U. 'When the door is thrown open it is parallel to the faces of the gear wheels and the roller, 25, passes along ahead of, the roller, 24, until it reaches the end, U, when the door is again thrown above the mold as hereinbefore described.

In Fig. 3 I show in diagrammatic form the groove V as spread out in plan view and the doors in dotted lines. The door is moving in the direction of the arrow at the left of said figure and when it reaches the end U of the channel iron its roller 24 strikes the incline and thus the door on its pivot into the position shown at 13 on the right. The cut away part of the channel to allow the door to swing around is indicated at 148. The arrow y shows the direction of movement when the door reaches the position shown in dotted lines 13 at the right of said figure, the forward roller projections are sufficiently far apart and have 25 being on the incline V turns the door as shown by the arrow 3 the channel iron being cut away here at 14 to permit this.

As before stated the gear wheels, A, A, are supported on portion of the sleeve eccentric to the main shaft, the center, 9, being their center of revolution and the drum, E, supported onportion of the sleeve concentric to the main shaft the center, 8, being its center of revolution and as the drum, E, is connected to the gear wheels, A, A, by the slotted lugs orprojections, F, and pins, f, it will be seen that. as the gear wheels are caused to revolve they will bring with them the drum,'E, but the relative position of the drum and gear wheel to each other will constantly vary as they revolve. \Vhen the door is closed the ends of the door come beneath the bearing pieces, 17, and above the lugs, 16. As the gear wheels revolve in the direction indicated by arrow it will be seen that the door,13, will be held so that the plates, 21, will be co-incident with and ready to enter the molds by the projections, 16, and that the projections or lugs, 16, will gradually approach the center thereby permitting the bearing pieces, 17 to force the plates into the molds, which the bearing pieces, 17, will continue to do until the lugs and center of the bearing pieces have arrived on a line with the line of dead centers. The bearing pieces, 17, as soon as theircenters have passed the line of dead centers will no longer exert a pressure upon the ends of the doors but the lugs 16, will as the drum is being brought around by the gear wheels exert a pressure on the under portion of the door so as to gradually cause it to recede from the mold until the tops of the lugs are on a level or very slightly above the level of the projection 20, of the drum, at which period the end, U throws the door around parallel with the faces of the gear wheels. In this position it rests upon the projections, 20, as soon as it reaches the top of the machine and when the door is swung by the curved end, U, around, the lugs, 16, carry it until the bearing pieces commence to approach the center, 9, and exert a pressure on the back ends of the door, when the weight will be relieved from the lugs 16.

In order that the sides of the molds may be kept heated so that the material will not adhere to the same I provide a system of steam heating which I shall now describe.

26, is a collar secured on the shaft, B, between the stationary cams, D. The collar, 26, has annular grooves cut in its periphery as shown in Fig. 2.

27, is a ring which fits upon the collar 26, and has two annular grooves cut in its interior as shown which are correspondingly situated to the grooves in the collar, 26, and form steam ducts, 28, and, 29. i

30, are annular grooves made in the faces of the collar, 26, and ring, 27, on each side of the point of junction as indicated.

31, are glands having annular projections which fit into the annular grooves, 30. In

the grooves,30, I place packing and secure the glands against the faces of the collar, 26, and ring 27, so that the projections extend into the groove and hold the packing in position and thereby render the joint between the ring 27, and the collar, 26, perfectly steam tight,

33, is the inlet pipe for the steam and, 34, is the outlet pipe. Both the inlet and outlet pipes extend into thecollar, 26, the inlet pipe, 33, extending into the passage way, 35, which communicates with the circular steam duct, 28, and the end of the outlet pipe, 34, extending into the passage way, 36, which communi cates with the circular steam duct, 29;

37, is the pipe leading from the circular steam duct, 28, into the steam pipe, 38, which is situated as shown in Figs. 1 and 2, at one side of the inwardly projecting portion ofthe drum in which the mold is formed.

39, is a pipe leading to the steam pipe at the side of the next mold and 40, is a steam branch pipe leading from the large pipe, 38, to the opposite large pipe which is situated on the other side of the inwardly projecting portion on the opposite side of the mold, but which is not shown in Fig. 1, nor Fig. 2.

The large pipes, 38, are placed one at each side of the inwardly projecting portion of the drum at each side of the mold around the interior of the drum but I have not shown'm ore than three large pipes, 38, in Fig. 1, as I consider that this is sufficient to exemplify the circulation of the steam on each side of the mold.

The two end pipes, 38, which I show at the bottom of the drum in Fig. 1, are the pipes into which the steam makes its entrance and exit from the machine.

41, is the pipe leading from the other end pipe, 38, into the circular steam duct, 28, which is connected by the passage way, 36, to the outlet. pipe, 34.

42, is the end pipe extending from the end pipe, 38, to the central pipe, 43, which extends down into the inwardly projecting portion on a line with the central pin of the door which is hollow as shown so as to form a passageway, 44, for the steam into the branch passage ways, 45, of the door which extend down into proximity with the plates as shown.

It will now be seen that the steam passing in through the inlet pipe, 33, passes along the passage way, 35, through the pipe 37, into the pipe, 38, from the pipe, 38, through the branch pipe 39,into the next pipe, 38, and from this latter pipe through the branch pipe, 40, into the next pipe, 38, on the opposite side of the molds and also through the branch pipes, 43, up through the passage way, 44, into the branch passage ways, 45, in the door and so on until it reaches the other end pipe, 38, from which the steam will enter through the end branch pipe, 40, into the pipe 41, and down through the passage way, 44, and into the branch passage way, 45, when the steam will also pass out through the pipe, 41, into the ICC IIO

circular steam duct, 28, thence out through the passage way, 36, and outlet pipe, 34. It

will now be understood that by this system -of steam heating the molds may be kept hot molds until the delivery of the blocksor billets and the return of the pair of 'molds to again receive the deposit of material. The slotted driving lugs, F, as before described have slots, f, through which the pins, 7, in the gear Wheels, A, A, extend and reciprocate 1n the slots,f, as the gear wheels revolve and carry with them the drum in the direct1on indlcated by arrow. As the molds, G, pass the hoppers,V', they are filled with material from the said hoppers the quantity depending upon the position of the plnngers in the mold which is regulated as before stated by the lifting dog, M. When the molds have reached a position so that the door in swinging around will clear the feed hoppers,the roller, 25, of thedoor reaches the beginning of the curved end, U, and in passing around the curved end as the drum continues to revolv e, operates so as to close the'door, that is to say, bring the door so as to place it crosswise on the drum and the plates of the door co-incident with the top of the mold readyto enter the same, which they are immediately caused to do by the eccentric revolution ot' the gears in relation to the drum, thereby drawlng the bearing pieces toward the center, 8, as hereinbefore described. The plungershavein the meantime been'travelingupon the concentric portions of the camsfrom, 1, to, 2, but immediately upon the door being closed and the plates being brought slightly into the mold the plunger starts to rise very rapldly upon the portion of the cam from, 2, to, 3, and the pressure upon the material begins, thecam being arranged so that at first' while the material is comparatively loose in the mold and practically before any pressure 1s exerted by the plates of the'door from the outslde, thelplunger travels up in the'mold very rapidly sufficiently far to drive all the air to the top of the material in the mold,

whence it escapes through vents described in my former patent and thus renders impossible the formation of an envelope of compressed air in or about the center of the material in the mold. When the plungers are traveling over the portion of the cam from 2,

to, 3, the gear wheels being as before described journaled on the eccentric portion of the ter and as the plungers at'the same time are being forcedout by this portion of the cam chine revolves.

the drawings only four pairs of plungers and it will be seen that a double pressure is exerted upon the material in the mold. This double pressure occurs until the centers of the plunger and door are on a line with the line of dead centers, that is, the line passing through the centers 9, and, 8, at which point the plates, 21, are caused to very gradually recede from the mold and the top plates of the plungers traveling on the portion of the cam from, 3, to, 4, are caused to follow the receding plates, 21, so as to maintain a pressure upon'the material in the mold,the'portion of the cam from, 3, to, 4, being an eccentric from the center, 9, plus a slight rise for the purpose of maintaining this pressure. When the plungersjhave reached the'portion of the cam from, 4, to, 5, the pressure is instantly released from the block or billet by the rollers of the plungers now resting loosely in the p0rtion"from, 4, to, 5, and the pressure of the block supplemented by the lugs 16, having forced the plates, 21, of the door outside the level of the top of the mold. As soon as thelugs have lifted the door clear of the top of the mold the roller, 24, strikes thecurvedend, U, of the channel iron,U, and swings the door around into the position shown by dotted lines in Fig. 1, so as to bring the roller, 25, into the line of the channel iron and as the door passes around the plungers H, are caused to move outwardly by the rollers, J, moving up upon the inclined portion of the cam from, 5, to, 6,'so as to throw the top plate of the plunger a little beyond the periphery of the drum anddeliver the pressed blocks 'or billets upon the endless belt one on each side of thedoor. The plungers, H, are now caused to remain slightly beyond the periphery of the'drum by the roller J passing over the concentric down in the mold until the rollers, J, rest upon the concentric portion from, 1, to, 2, at the beginning of which portion of the cam the material is fed from the hoppers, V, into the mold.

Although I have described the pressing of the pressed blocks or billets in reference to a pair of molds and plungers and'their corresponding door it will of course be understood that eachpair of plungers and door in the machine are operated successively as the ma- Again although I'show in molds it will of course be understood that there may be as many pairs of molds and plungers as the circumference 'of 'the machine will accommodate and a corresponding numher of doors for each pair of molds and plungers.

Although I describe in my former application my machine as particularly applied for making bricks I prefer in the present application to call it improvements in rotary presses as my machine is adapted forpressing so many different kinds of material, it being specially adapted for the pressing of peat as well as bricks.

Although in the drawingsI have shown the stationary cam designed to deliver the block at the bottom of the machine it will of course be understood that the portion of cam which 'exerts the pressure on the plunger may be varied in length so as to deliver the block at almost any desired point but I wish to lay particular stress in this application upon the form of cam by which the block is delivered at the bottom of the machine thereby obviating the necessity of extra mechanism described in my former application for carrying the blocks from the machine to the endless belts.

In the drawings I have also shown a pair of molds on each side of the pivot pin of the door but it will of course be understood that the machine might be made wider and more than one mold might be formed in the drum on each side of the pivot pin.

What I claim as my invention is 1. In a rotary pressa drum provided with a series of molds having a corresponding number of plungers located therein and deriving a radial movement from stationary cams on the main shaft of the machine, and a pivoted door provided with plates for each pair of molds in combination with the eccentrically journaled gear wheels adjustably connected to and driving the drum, and a means on the gear wheels whereby the plates of the door may be forced into the molds so as to co-act with the radially movable plungers as and for the purpose specified.

2. In a rotary press a series of molds rotating around the main shaft of the machine and provided with radially moving plungers, in combination with a stationary cam the periphery of which is concentric from, 1, to, 2, and from, 2, to, 3, is provided with sudden rise for the first portion, the remaining portion being a gradual rise, from, 3, to, 4, of a gradual rise as described from, 4:, to, 5, of a depression, from, 5, to, 6, of an inclined way from the center, from, 6, to, 7, of the concentric portion and from, 7, to, 1, of the flange, d, formed on the curve shown and for the purpose specified.

3. The drum,E, provided with molds, G, the plungers, H, provided with a top plate, 72, the shaft, I, provided with rollers J, and having tenoned ends moving in radial slots, and cams, D, arranged to operate upon each pair of rollers as they rotate, in combination with the feed hopper, V, and pivoted door, 13, arranged to close the top of the molds when the pressure is being exerted upon the plungers by the cams, D, as and for the purpose specitied.

4. A rotary press comprising a frame, a rotary drum journaled therein provided with flat portions at intervals in its periphery a pair of molds at each flat portion, with plungers reciprocating in said molds, and a pair of feed hoppers for feeding material to the molds, having slides carried upon one side adapted to conform to the flat portion, substantially as described.

5. A rotary press comprising a frame, a 1'0- tary drum provided with a series of flat portions, a pair of molds at each flat portion with plungers reciprocating therein, feed hoppers having one side inclined, a slotted plate with bolts connecting the plate to the inclined sides, and weights carried by said plates for causing them to conform to the flatportions, substantially as described.

6. The drum, E, provided with molds, G,the plungers, I-l, provided with a top plate, 7b, the shaft, I, provided with rollers J, and having tenoned ends moving in radial slots and the cams, D, arranged to operate upon each pair of rollers as they rotate, in combination with the feed hoppers, V, secured to the channel iron, U, the door, 13, provided with rollers, 24, and, 25, and the channel iron, U, provided with curved ends, U, and, U", and the openings at each end of the channel iron as and for the purpose specified.

7. The drum, E,provided with molds, G,'the plungers, H, provided with a top plate, h, the shaft, I, provided with rollers J, and having tenoned ends moving in radial slots and the cams, D, arranged to operate upon each pair of rollers as they rotate, in combination with the door, 13, pivoted on the pins, 15, Whichhave annular grooves, 22, cut in them, and pins, 23, extending through the door and groove of the pin one ateach side as and for the purpose specified.

8. The drum, E, provided with molds, G,the plungers, H, provided with a top plate, 71., the shaft, I, provided with rollers J, and having tenoned ends moving in radial slots and the cams, D, arranged to operate upon each pair of rollers as they rotate, in combination with the door, 13, pivoted on the pins, 15, which have annular grooves, 22, cut in them, and pins, 23, extending through the door and groove of the pin one at each side, and the projections, 20, formed on the drum and having slanting inner sides as described and for the purpose specified.

9. The drum, E, provided with molds, G, the plungers, H, provided with a top plate, It, the shaft, I, provided with rollers J, and having tenoned ends moving in radial slots and the cams, D, arranged to operate upon each pair of rollers as they rotate, in combination with the door provided with rollers, 24, and, 25, pivoted on the pin, 15,having annular grooves, and pins, 23, in each grooveat each side of the pin and the channel iron, U, having an opening through which the roller, 24, passes, and

a curved end, U, along which the roller, 25, passes and the straight edges, u, as and for the purpose specified.

10. The combination with the molds formed in the drum and plungers deriving a radial reciprocating movement in the molds from the cams, D, of the door, 13, provided with rollers, 24, and, 25, and adjustably held on their pivot pins, the projections, 20, the channel groove, U, provided with a curved end, U, and the lugs, 16, on the eccentrically journaled gear wheels, A, A, as and for the purpose specified.

11. The combination with the molds formed in the drum and plungers deriving a radial reciprocating movement in the molds from the cams, D, of the door, 13, provided with rollers, 24, and, 25, and adjustably held on their pivot pins, the projections, 20, the channel groove, U, provided with a curved end, U, and the ecoentrically journaled gear wheels, A, A, having the lugs, 16, and the bearing pieces, 17, between which the ends of the door when closed extend as and for the purpose specified.

12. The combination with the molds formed in the drum and plungers deriving a radial reciprocating movement in the molds from the cams, D, of the doors, 14, provided with rollers, 24, and, 25, and rocking pieces, 18, and adjustably held on their pivot pins, the projections, 20, the channel groove, U,'provided with a curved end, U, and the lugs, 16, and the bearing pieces, 17, beneath which the top upper ends of the door extend as and for the purpose specified.

13. The combination with the molds formed in the drum and. plungers deriving a radial reciprocating movement in the molds from the cams, D, of the doors, 14, adjustably held on their pivot pins and having plates,2l,as and for the purpose specified.

14. In a rotary press the combination with a series of pairs of molds, of a single pivoted door for each pair of molds operating to open and close both molds of the pair, substantially as described.

15. The doors, 13, provided with plates, 21, adjustably held when closed on their pivot pins, 15, above the molds in the drum, in combination with the eccentric gear wheels, A, A, havinginwardly extending bearing pieces, 17, and lugs, 16, on each wheel between which the ends of the doors when closed extend and the pins, f extending through the slots, f, in the lugs, F, secured to or forming part of the drum as and for the purpose specified.

16. The combination with the drum,E, provided with molds G, the plungers, H, radially movable in the said molds by the cam, D, of the lifting dog, M, crank, N, and the rod, 01, provided with a hand wheel as and for the purpose specified.

17. The combination with the, molds, G, formed in the drum, E, of the collar, 26, secured to the shaft, B,and the ring, 27,secured on the outer periphery of the collar, the said collar and ring having circular steam ducts, 28, and, 29, between them into which lead the outlet and inlet steam pipes, 33, and, 34, and from which lead the pipes, 37, and, 41, to and through the steam pipes 38, and, 40, as and for the purpose specified.

18. The combination with the molds, G, formed in the drum, E, of the collar, 26, secured to the shaft, B, and the ring, 27, secured onthe outer periphery of the collar, the said collar and ring having circular steam ducts, 28, and, 29, between them into which lead the outlet and inlet steam pipes, 33, and, 34, and from which lead the pipes, 37, and, 4l,t0 and through the steam pipes 38, and,40, and branch pipes, 42, 43, which extend to the passage way, 44, leading through the pivot pins of the doors into the branch passage ways, 45, as and for the purpose specified.

19. The combination with the molds, G, formed in the drum, E, of the collar, 26, secured to the shaft, B, and the ring, 27, secured on the outer periphery of the collar, the said collar and ring having circular steam ducts, 28, and, 29, between them into which lead the outlet and inlet steam pipes, 33, and, 34, and from which lead the pipes, 37, and, 41, through which the steam circulates in pipes to and into proximity to the. sides of the molds and the bottom plates of the doors which form the top of the molds and the face plates, 30, provided with projections, 31, designed to fit into the annular grooves formed in the end faces of the ring, 27, and collar, 26, at their point of junction as and for the purpose specified.

20. In a rotary press the drum, E, containing the molds formed in two halves, the point of division being parallel with the face of the drum and the two halves being secured together by the bolts, E, which pass from the outside face into the open center and are connected together by the reverse threaded couplings, e, as and for the purpose specified.

FREDERICK L. H. SIMS.

Witnesses:

BLANCHE BOYD, LEONARD FOULDS.

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