US266532A - Brick-press - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1..

R. N. ROSS.

BRICK PRESS. No. 266,532. Patented Oct. 24, 1882.

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2 sheets-sheet 2;

(No Model.)

R. N. ROSS.

BRICK PRESS.

PatentedOet. 24, 1882.v

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NITnD STATES ROBERT N. ROSS, OF S'I. LOUIS, MISSOURI.

BRICK- PRESS.

SPECIFICATION forming part of Letters Patent No. 266,532, dated October 24, 1889.

Application filed January 10, 1882. (No model.)

T o 'all whom it may concern:

Be it known that I, ROBERT N. ROSS, ofthe city of St. Louis, in the State ot Missouri, have invented a certain new and useful Improvement in Brick-Presses, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part ot' this specification.

In the drawings, Figure l isa side elevation of my improved machine. Fig. 2 is a plan, with part ofthe top ofthe mold-cylinder broken away to show one pair ot' molds. Fig. 3 is a horizontal section on line 3 3, Fig. l. Fig. 4 is a vertical section on line 4 4, Fig. l. Fig. 5 is a top view ot' a pair of molds. Fig. 6 is a bottom view ot' one ot' the molds, showing the movable bottom in place. Fig. 7 is a detail view, showing the manner of securing the revolving mold-cylinder to the bed-plate ofthe machine. Figs. S and 9 are detail views, showing the adjustable friction-rollers which form the vertical support ot' the mold-cylinder. Fig. l() is a detail view, showing the stop for engaging with thcbottom ot' the mold-cylinder, as hereinafter described. Fig. ll is a side elevation of one of the plungers for removing the bricks from the molds.

A represents the frame, supported ou snitable legs, a. I prefer casting the frame in two pieces, with lugs a for securing them together by bolts a2.

B is the bed-plate ot' the machine, upon which rests the mold-cylinder O. rlhe cylinder does not rest directly on the bed-plate, but is supported by friction-rollers D, which havejournal-bearingin movable boxes d, working in stirrups d', secured to the under side of the bed-plate. (See Figs. 8 and 9.) '.lhe boxes are adjusted by means of set-screws d2 screwing through the bottoms ofthe stirrups. They are three in number. The advantage ot' these friction-rollers is that they reduce the friction and at the same time protect the bed-plate and cylinder from wear by the contact of their surfaces. They are made adjustable, so that their relative heights may be changed as desired. The cylinder O is cast with three openings for the reception of the molds E. The molds are made in pairs, (see Fig. 5,) with a marginal ange, e, at top. The upper tace ofthe cylinder is rabbeted around the openings (see Fig.

4) to receive the lianges of the molds, and thus the molds are vertically supported. The openings in the cylinder are somewhat larger than the molds, so that a space is left between them to be. filled with a suitable packing, so that the molds are held firmly in place. As a packing I prefer to use sulphur, as it will not shrink in cooling, and should it be desired to remove the molds it can be easily taken out by melting. rIoholdtheinoldsin place beforelhe packing is put in, set-screws c are employed, (see Fig. 4,) which screw through the shell ot' the cylinder that surrounds the mold-openings. rIhe cylinder is secured to the bed-plate by a bolt, E', extending upward through the center ofthe bedplate and through the ccnter ofthe cylinder. Around this bolt the cylinder revolves.

F F are the movable bottoms ot' the molds. They consist ot' a top, f, and a body,f. The body is cast hollow, with cross-ribs f2. (See bottom view, Fig. 6) rIhe top j' tits snugly the inside ot' the mold. lnigsf3 on the inside lower portion ofthe molds limit the downward movement ot'the bottoms. It will be seen that the bottoms do not come in contact with the bed-plate.

When it is desired to make thin bricks Iremove the bottoms F and insert others having thicker topsj', as shown by dotted lines, Fig. 4. The bodies ofthe bottoms have guideribs f4. (See Fig. 6.)

The clay is conveyed to the molds by ahopper, G, supported by a bracket, H, secured to the frame A. The molds are brought 1n turn beneath the hopper by turning the cylinder C. The molds are so located in the cylinder that while the clay is being tilled into one pair the bricks are being pressed in the next pair to the right, and removed from the other pair, as hereinafter described.

lTo insure the stoppage of the cylinder' when the molds are exactly beneath the hopper, and in the proper position for the pressing and removing plnngers, I provide a sprmgstop. The

stop consists ot' a pin, I, on a spring-plate, z', secured by one end to the bottom ot' the bedplate. The piu extends up through a hole in the bed-plate, and engages with holes in the bottom ot' the cylinder O.

J is a treadle connected to the free end of IOO the spring-platea' by aconnecting rod or chain,| by a block, R', connected to the sliding beam j. (See Fig. l.) Whenthe cylinder is to be turned the treadle is pressed down, which draws the pin I outof engagement with the cylinder, which allows the cylinder to be turned. As soon as the cylinder is slightly turned, so that the pin I will not enter the same hole, the pressure is removed from the treadle, and the spring will keep the pin I in contact with the bottom ot' the cylinder until the next hole comes around, which is when the next pair of molds come beneath the hopper, and then the .pin will enter the hole under the influence of the spring and lock the cylinder from revolving farther until the treadle'is again pressed down. f

The pressing of the bricks is as follows:

K is a shatt having journal-bearing in suitable boxes secured tothe frame A. 0n the shaft are eccentrics L L and M M, rigidly secured to the shaft. The eccentrics L L are connected to the lower plungers, N N, by means of coupling-links O O, whose lower ends have eyes fitting the eccentrics, and the upper ends eyes fitting the outward-extending pins on the lower portion of the plnngers. Similar links, P P, to those O 0 fit the eccentrics M M, and are connected to the links Q Q on the outer ends, fr, of the sliding beam R by connectingrods S S. The ends r of the sliding beam work in slots r in the frame A.

T T are the upper plun gers, rigidly secured to the beam R. The salient parts of the eccentrics M are at right angles to the salient part of the eceentrics L. Thus it will be seen that when the shaft K is turned by means of the lever U the plungers will move toward each other, and thus press the bricks from above and beneath, the lower plungers coming in contact with the bottoms F.

The rods S are connected to the links by right and left screw-threads, so that by turning them the relative position of the plungers v can be changed to press the bricks more or less. The lower plungers are cast with a connecting-web, n, which has a dovetail connecting with cleats n', secured to cross-bars n2 of the frame A. (See Figs. 3 and 4.) The plungers are thus guided and held from lateral movement. Theupperplungersaresimilarlyguided R, and having dovetail connection with cleats r2, secured to cross-bars r3 of the frame A.

u is a stop (see Figs. l and 2) for the outer end of the lever U, to limit its downward movement.

The bricks are removed from the molds by the plungers V V, operated by means of an eccentric, l/V, on the counter-shaft X, which has bearing in suitable boxes, fr, secured to the frame a?, which projects inward from the frame A. On the shaft X is a'bevel-wheel, Y, engaged by a segment, Z, on the shaft K. The connection between the eccentricW and plungers V is by a link, V', similar to those O and I. (See Fig. 11.) The plungers V are guided by a dovetail connection with the frame a3. (See. Figs. 3 and 11.) It will he seen that when the lever is operated4 to press the bricks it will also operate the plungers V and remove the bricks from the pair of molds over the plungers. ItisnecessarythattheplungersVshould have twice the movement of those N and T, so that the bricks will be removed completely out of the molds. To accomplish this I make the diameter of the segment Z twice that of the bevel-wheel Y.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

l. In a brick-press, the mold-cylinder C, supported on friction-rollers D, adjustably secured to the bed-plate B, substantially as and for the purpose set forth.

2. In combination with cylinder C and molds E, the set-screws e', as and for the purpose set forth.

3. The combination of shaft K, eccentrics L L M M, mounted thereon, lower plungers, N N, links O 0,1? P, and Q Q, beam R, upper plungers, T T, adjustable connecting-rods S S, andl suitable molds, E E, as set forth.

4.. The removing-plungers V, connected to the shaft X by eccentric W and link V', the

frame a3, bevel-wheel V, and segment Z, all

substantiallyas and for the purpose set forth.

ROBT. N. ROSS.

Witnesses: SAML. KNIGHT, GEO. H. KNIGHT.

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