US140296A - Improvement in brick-machines - Google Patents

Description

3Sheets--Sheet 2.

C.H.MURRAY.

Brick-Machines.

No 140,296, Patentedlune24,1873.

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C. H. MURRAY. Brick-Machines.

Patented june 2 1873.

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CHARLES HENRY MURRAY,OF SOUTHVVARK, ENGLAND.

IMPROVEMENT IN BRICK-MACHINES.

Specification forming part of Letters Patent No. 140,296, dated June 24, 1873; application filed June 20, 1872.

chinist, have invented certain Improvements in Machinery for Making Bricks, of which the following is a specification:

My invention of improvements in machinery for making bricks relates more particularly to the mechanical appliances for cutting the clay (as it passes out of the exit-aperture of the kneading or brick-making machine) into bricks of the desired shape and dimensions. To this end, supposing a quantity of clay of the proper sectional area and sufficient length to form, say, twelve bricks, has been expressed from the kneading-machine, the proper length to form from eight to twelve bricks is first cut off by means of a vertical wire or wires mounted in a reciprocating frame, which is capable of moving to and fro on guides or being rocked on pivots affixed to the side standards or other suitable part of the machine. The proper length of clay having been thus cut off from the exuding mass, the lump is next pushed forward by hand onto the plain surface of the cutting-table, so as to bring it in front of a series of fixed wires, against and past which it is next pushed laterally, as will be hereafter explained, and is thereby divided up into bricks of the usual and proper dimensions. This pushing forward of the lump of clay against the fixed wires is effected by means of a second movable frame or pushing-board, which, as it advances, pushes forward the clay from off the plain-surface table against and past the fixed wires. This lateral movement of the pushing frame or board and the lateral advance of the clay is effected by means of a rack and pinion motion, which is acted upon by awinch-handle or a hand-wheel. The vertical wires against which the clay is pressed in order to divideit into bricks may have a slight downward motion given to them, so that the operation of dividing the clay may be effected .by a kind of drawing out. This will be effected by the adaptation thereto of blocks of India rubber, which will yield to pressure.

In the accompanying drawings, Figure 1 is a side elevation of the machine. Fig. 2 is a sectional end view; and Fig. 3 is a plan, showing the receiving-table a, onto which the lump of clay I) (to be cut up or divided) is pushed by hand when divided from the mass which is exuding from the nozzle of the kneadingmachine.

When the clay has exuded from the knead in g-machine it passes over a series of horizontal rollers, a a a and over a lubricating roller, a which, by rotating in a trough containing oil or water, will lubricate the under side of the clay. Before passing onto the table a a proper length for making any convenient number of bricks, say twelve, is out oif from the exuding mass by means of a movable cutting-wire, c, fixed in the movable frame 0, which runs in guides at d, or this frame may be made to oscillate on pivots. The lump of clay is then pushed forward by hand onto the plain surface a of the table. A series of vertical wires, e e, are secured in a stationary frame in front of the lump of clay I). The lower ends of these vertical wires are attached to pins fixed in the bar of the stationary frame, while the upper ends are attached to screwed rods which pass through holes in the upper bar of the stationary frame, and are capable of being drawn up by means of thumb-screws e e, for the purpose of tightening the vertical wires. In order to impart a certain amount of elasticity or flexibility to the wires, elastic washers ofrubber are placed under the thumb nuts 6 6, so that when the clay is pressed against the wires 6 the latter will be forced out of the straight line, and in so doing will compress the rubber-washers. The lump of clay is pushed forward against the wires 6 e by the pushingboard f which is attached to the sliding bar or frame f. The pushingboard f is actuated by means of a toothed segment and rack, f and by turning the winch-handle and segment the board f is moved forward and forces the lump of clay from off the plain surface of the table past the wires 0 6 onto a movable board, a, placed at the back part of the table on purpose to receive it. The clay will thus be left on the movable board a in the form of bricks, as shown at b in the drawing, and the lot of bricks may be removed at once, without handling them, by simply lifting up the board a onto which they have been pushed and then placing the board, with the bricks thereon, on a barrow. Immediately the pushing-board f has pushed the clay past the vertical wires onto the movable board a the winch-handle is to be thrown back, and the pushing-board f will then resume its original position, ready to push forward a second lump of clay onto a 1. The combination of the delivery-table a with the lubricating-roller a revolving in the vat x for lubricating the under surface of the clay.

2. The combination, with the plain surface receiving-table a, of the reciprocating pusherboard f and frame f for forcing the clay past the vertical cutting-wires 0, arranged and adapted as described, onto a movable board,

a so that a convenient number of bricks may,

without handling, be removed from the machine at the same time, as herein set forth. CHARLES HENRY MURRAY.

Vitnesses:

H. K. WHITE, A. BISHOP,

66 Chancery Lane, London, England.

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