US170526A - Improvement in brick-machines - Google Patents

Description

J. CRABTREE & w; H. MELCH BRICK-MACHINE. N.17o,5ze.

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Patented Nov. 30,1875.

WITNESSES Nv PETER y PHOTO-LITHOGRAPHER. WASHINGTON, D C

. 3SheetsSh eetZ. J. CRABTREE & W. H. MELCHER.

- BRICK-MACHINE. No.170,5Z6. Patented N'ov.30,1875.

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N, PETERSv FHOTO LITHOGRAPHEFL WASHINGTON, D C.

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cnAswmra w. H. MELGHER. BRICK-MACHINE. No 170,5Z6 I I Patented Nov. 30,1875. I

Fife) fi W Y mar 55 U ITED STATES JOHN ORABTREE AND WILLIAM H;

PATENT" came.

MELGHER, or PHILADELPHIA, PA.

ASSIGNORS TO THEMSELVES AND WILLIAM ORABTREE, OF SAME PLACE.

IMPROVEMENT IN BRICK-MACHINES.

Specification forming part of Letters Patent No. 170,526, dated November 30,1875; application filed November 4, 1875. i

chine,'as will be hereinafter more fully set.

forth.

In order to enable others skilled in the art to which our invention appertains to make and'use the same, we will now proceed to describe its construction and operation, referring to the annexed drawings, in which Figure 1is a side elevation of our machine. Fig. 2 is an end view of the same. Figs. 3

and 4am vertical sections of the'machine- Fig. 5 is a plan view; and Figs. 6, 7, 8, 9, and g means ofa worm, K, on a shaft, L, said shaft 10 are views of detached parts thereof.

The frame A of our brick-machine'is constructed in any suitable manner to contain the various working parts thereof. B is the cylinder or pug-mill, through the center of which passes a vertical shaft, a, provided with a series of knives, C, for cutting the clay and forcing or feeding it downward to and below a segmental false bottom, D, secured in the lower part of the pug-mill. In the space between the bottom of the pug-mill and the false bottom D works a pusher, E, attached to the shaft a, thefront of said pusher being made convex or curved, as shown by dotted lines in Fig. 5. This pusher forces the clay from the cylinder or pug-mill B through the die or mouth-piece b into the molds, and acts in connection with a pivoted stop, G, which also works under the false bottom I). The stop G is secured to a vertical rod, d, to which is also secured an arm, H, carrying a stud and roller, 0, on its-under side at the outer end. This roller bears against a cam, I, (shown in Fig. 7,) secured on the shaft a below the bottom of the pug-mill. As the clay is forced by the pusherE under the false bottom D, the

stop G prevents the clay from going all the die or mouth-piece 11 into the molds. By the use of the pusher and stop the clay is thus' turned for the next charge, thereby avoiding.

any undue pressure in themolds. This is readily seen by reference to. Fig. 5. As the pusher advances under the false bottom D, it presses out thestop G before it, and when the point of the pusher has passed the side or point rec-f the die, there'is room behind the pusher fo'rany excess of clay toescape and remain for the next'charge. As soon as the pusher has cleared the stop, the cam I, acting upon the roller 0 and arm H, at once forces the stop inward to its original position. On the shaft a, near the lower end, is fastened a cog-wheel, J, which receives its motion by being run by any suitable or convenient power. Under the'cog-Wheel J, on the same shaft, is secured a beveled pinion, M, which meshes way around, but causes it to pass out of the with, and communicates motion to, alarge f bevel-wheel, N, secured on a shaft, 0. running at right angles with the main driving-shaft? L, and upon this shaft 0 are secured the va rious cams for operating the remaining por tions of the machinery. P represents amovable carriage placed upon suitable guidesor ways in the frame A, and having a mo1d, R,'

formed on or attached toit at each end. "The mold is open at the side towardfthe die or mouth-piece b, and on the opposite side it forms a solid abutment, f, against which the clay is pressed. The end pieces of the mold are provided with. a series of vertical slots, and. the bottom of the mold is grooved to form continuations of said slots. The bottom of the mold is a follower, S, which is raised and lowered at the proper time by means of two flanged or' grooved cams, T T, operating on pins it, projecting from the sides of the follower near the lower end. In the frame A, opposite the upper edge of the die b, is a sta:

, carriage is moved back and forth-that is,

while the mold is directly opposite the die b, it is covered by the slat-work V, and the mold is then filled with clay from the pug-mill.

a Above the slat work V is across-shaft, W, carrying a series of knives, Y, which revolve" with the shaft and pass between the slats, and through the clayin the mold, dividing the same into proper size for bricks. a

After the clay has been thus divided and the carriage moved to one end, the follower S is raised up abovei the top of the mold, lifting the bricks with it, when they are pushed off,

onto boards or stationary tables by means of a cross-bar, Z, attached at its ends to heads A A, sliding in ,grooves'in the sides ot'ithe frame A, and connected by links 1th with two arms,B B, projectingfrom a rocking shaft, 0. The carriage, followers, and push-bars are,

operated by the following means At one end of the carriage is a hinged link,k, the outer end ofwhich is, pivoted to an elbow-lever, D,

pivoted to a rock-shafigE. Theelbow-lever,

D is, by a rod, m, connected with the upper slotted end of a straightlever, G,attached at its lower end to a rock-shaft, H. i It is understoodthat these devices may be the same at both ends of the carriage. V

Thetwo levers G G are connected by means of abar or rod, a, asshowninFig. 3, and in the slot of each lever is mounted a roller, 1), for a cam, I, to operate against, said cam being sethe die or mouth-piece b. l

e To insure that the carriage will stop and be held stationary at the exact point where the mold will be opposite the die,so that the sides l ofthe die and sides of the mold will be flush vwith each other. I provide the shaft O with twocams, J J, each ofwhichoperates anj arm, K, vertically up and down by means of a roller, 8, mounted on a stud in the side of the arm, andworkingin said cam. The arm K moves in suitable guides, and its upper, end is pointed or V-shaped, as shown in Fig. 6. Whenthecarriagearrives in position to bringeither mold opposite the die, the arms K areraised bythe cams J, so that their; pointed endswill entercorrespon din gly-shaped notches t in the under side of the carriage,

andhold it perfectly rigid while the clay is being forced into the molds, and while the knives are cuttingthe sameinto bricks. This is of great importance, as there is always or less playjlor lost motion in the gearmg. j y

' As an additional security against any vihration or movement of the carriage while the arms K; are beingraised and lowered, a hook, w,pivoted to theinside of the frame A, catches on pin, 1;, in the sideof the carriage. This.

hook is raised andtlowered 1 by having a stud and rollersm, working in a cam,1L,, on the knifeshaft W.

The grooved cams T, whichraise and lower the followers S in the molds, are secured on a shaft, 3 to the inner end ofwhichisattached an arm, z, and this arm 1 is, by a rod, a ,*connected with a lever, M, pivotedat its lower; end to the frame, and provided near its upper end witha stud and roller, N, that works in a ca|n,N, ontheshaft 0. By these meansthe followers in the two molds are raised and lowered at the proper time, it being understood that the mechanism 'justdescribedisthe same at both ends of the machine, and the rollers b of the two levers M both work in the same cam N.

On the rear end of the shaft :0 issecured a earn, 0', in which work twostudsand rollers, d, attached to the lower ends of two elbowlevers, l? P, mounted upon posts projecting from the frame. The other arms of these 16- vers are,byrods e a, connected with armsf l f attached to the shaftso of. These shafts having thearms B, to which the push-bars Z are connected, said push-bars are moved at the proper times to move the bricks fromgthe molds. The knife-shaft isvrotated bysuitable gearing R It fromtheshaftvO. The operation of themachine is, =brietly, as follows: The machine being in motion,; the knives G on the shaft on inthe pug-mill cut the clay, and force it downward until, the pusher E presses themold full that is itllflll opposite the die or mouth-piece b. Assoonl as the mold is fulland the pusher-E has passed the mouth of the die theknives Y descend through the slat-work V, and through theislots and grooves of the mo1d,,cutting1the clay into the proper size for bricks, Just before the knives clear the clay the armsvK are moved downward to clear the notches t therein,;and when the knives have entirely cleared the mold the hook w is, by its cam,raised lfrom off the pin '0. Thecarriagewillthen bemoved, soas to bring the otherflm oldv opposite tothe die or mouth-piece b, andwhilethis no ld lis being f lled and the clay cutthe follower Sin the first moldis raised ,byits cams T, andlthe brick then pushed oli" bythe push-banZ v;

The various camsmentionedare construc ed in the following manner: The cam I, which forces the stop G inward, is shown in Fig; 7 and has a semicircle, a2, concentric with the shafts, and from each end of the semicircle is a straight side, b extending radially inward for a suit-able distance, aud then a smaller semicircle, (1 in theopposite direction, also concentric with the shaft a i v v i i It i The cams T, for operatingthe follower y e the molds, are shown, in Fig. 3, and consist simply of curved arms, ihavin gon their outer ends curved concentric flanges e 0?, between H v i, v i which the rollers'i on the followers arefcaught l and pass as the cams revolve. The cams J, forjoperating the barsfK are constructed, as shownin Fig. 3, with twoquar;

ter-circles, f f, of the same diameter, and concentric with the shaft 0, upon which the cams are secured. The two quarter-circles f are connected by curves h k and straight portions 6 i at each end of said curve. The cam L on the knife-shaft W, for operating the hook w, is shown in Fig. 10, and has a groove, 70 of nearly three-fourths of a circle, and concentric with the shaft, the two ends of said groove being connected by an irregular groove, m which causes the hook to lift ofi' of the pin 1; instantaneously, and returns it, in like manner, onto the pin, where it remains, while the roller 00 of the hook passes through the three-quarter circular groovek The cam N, which operates the cams T, is shown in Fig. 8, and is constructed with a groove, n about two-thirds of a circle, and concentric with the shaft 0, on which said cam N is secured. From the ends of the groove n extend two parallel grooves, 19 12 the outer ends of which are connected by a curved groove, 8 In these grooves work the rollers 12 of the levers M', for imparting the proper motion to them.

The earn 0, for operating the pusher-bars Z, is shown in Fig. 1, and has a two-thirds circular groove, t connected by means of two inwardly-inclined grooves, 11 e Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In a brick-machine, the pug-mill B, provided with the segmental false bottom D and the die or mouth-piece b, in combination with a mold placed against said mouth-piece, so that the clay is forced on a horizontal line directly from the pug-mill into the mold, substantially as herein set forth.

2. In a pug-mill for brick-machines, the combination of the pusher E and stop G, constructed and operating substantially as and for the purposes herein set forth.

3. The combination of the stop Gr, vertical rod d, arm H, with roller 0, and the cam I, having semicircles a d and straight parts b b substantially as and for the purposes herein set forth.

4. The molds R R upon the ends of the movable carriage P, said molds being open on one side, a solid abutment, f, on the opposite side,

and the ends and bottom slotted and grooved, substantially as and for the purposes herein set forth.

5. A series of knives, Y, attached to a revolving shaft, W, and operating in combination with the slat-work V and slotted molds R R, substantially as and for the purposes herein-set forth.

6. The combination of the carriage P, hav- '7. The combination of the cam L, having segmental and irregular grooves 70 m, the pivoted hook w, with stud and roller'x, and the pin 0) on the side of the carriage 1, substantially as and for the purposes herein set forth.

8. The combination of the grooved follower S, with pins 'i t projecting from its sides, and the cams T, attached to a rocking shaft, y, and provided with concentrically-curved flanges 0 6 substantially as and for the purposes herein set forth.

9. The combination of the cam N, having curved and straight grooves n 8 and 10 as described, the levers M, with studs and rollers b rods a and arms 2 on the rocking shafts y, for operating the cams T, substantially as and for the purposes herein set forth.

10. The combination of the cross-bar Z,

sliding heads A, links h, and arms B, attached to the rocking shaft 0, substantially as and for the purposes herein set forth.

11. The combination of the cam 0, havingsegmental groove t and inclined grooves 11 the elbow-levers P, with studs and rollers d, the links e and arms f on the rocking shafts O, substantially'as and for the purposes herein set forth.

In testimony that we claim the foregoing we have hereunto set our hands this 16th day of October, 1875. I

JOHN GRABTREE. WM. H. MELOHER. Witnesses:

FRANK WOLFE, F. A. OSBOUBN.

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