US105270A - Improved brick-repressing machine - Google Patents

Description

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Letters Patent No. 105,270, dated July 12, 1870.

IMPROVED BRICK-REPRESSIN G- MACHINE.

*H The s chedulerefetred to in these-Letters Patent and making part of the same.

To whom it may concern Be it known that I, ANDREW J. SPRAGUE, of To ledo, in the county of `Lucas and State ci' Ohio, have invented a new and useful Improvement in Machines for Repressing Brick; and I do declare that the following is a true and accurate description thereof, reference being had to the .accompanying drawing and to ,the letters of reference marked thereon, and being a part of this specification.

Figure 1 is a side elevation:

Figure 2 is a vertical cross-section, showing the position of the Working parts, and a brick just ready to move forward upon the apron to the press.

Figure 3 is a section, showing the brick in the process of being pressed.

Figure 4 is also a section, showing the manner in which the brick is released after being pressed.

Like letters indicate like parts in each figure.

The nature of this invention relates to the construction of an apparatus for repressing brick after they have been molded in any ordinary manner, when they are required for front or outside work, where pel'- fect uniformity in size, and square and true corners and edges are desired.

The invention consists in a new and ingenious arrangement of well-known mechanical devices, and their peculiar application to produce the/purpose desired.

In the accompanying drawing- A represents a suitable frame-work, which sustains .the working parts of the apparatus.

B represents a shaft, whose ends are properly journaled into the opposite sides of the frame A, and receives motion from the geared wheels C, or any other' suitable means. D are cams, rigidly secured to said shaft B for thel purpose, in the rotation of the shaft, of raising the mold-box E, by means of the downward-projecting arms a, whose lower extremities are provided with suitable friction-wheels b, which engage with and travel upon the face of the cams D.

F is another cam, also rigidly secured to the centre 'of the length of said shaft B, and is of a peculiar shape, as shown, and provided with a prolongation, c, for the purposehereinafter described.

This cam, in the rotation of the shaft B, gives an upward motion to the connecting-rod G, the lower end of which is provided with wheel or friction-roller-d, which engages with and travels upon the face of the cam F, while its upperend is secured to the bed H.

I is a-yoke, supported by and secured to the frame A by means of the threaded bolts e and nuts j, and, by means ofthe same devices, said yoke may be raised or lowered, as desired.

To the under side of this yoke is secured the fixed platen J, the face of which should be the size of the surface of the brick, and should iill the mold-box E.

The lower face of this platen is covered by a sheet of rubber, g, secured at its two ends in any appropriate manner.

Some holes, h, pass' vertically through the platen, and coincidently through the rubber sheet, for the purpose of letting any surplus clay out of the mold box. Y

Other holes, i, four or more in number, also pass vertically through the said platen, near its corners, for the purpose hereinafter explained.

R is a drum, properly jonrnalled between the sides of the frame A and its shaft, provided with a spider,

' K, rigidly secured'theretc.

The face ofthe drum is provided with spurs, 7c, pro'- jecting slightly from its periphery, for the purpose of compelling, in the rotation of said drum, the endless apron L to advance with lthe said rotation.

Motion is communicated tosaid drum by means of the projecting arm l, which is secured -tothe geared wheel C', and, in its rotation, engages with one ofthe arms of the spider, and rotates it until released from said engagement, thereby giving an intermittent rotary motion to the drum.'

Said endless belt or apron L is .made of coarse strong canvas, for the purpose of roughening, by indentation of its threads, into the lower surface-of the bricks, the more eiiectually to enable the mortar with which they may be laid to hold.' Y

The apron passes around the drum and the rollers M, which are so arranged,frelatively to each other, that the apron is easily. rotated; as desired, to carry the brick into the press, and'out from the `same after they have been pressed. f y

Should it be deemed preferable, any other suitable material may be used for this apron or belt, such-as leather or rubber.

In the operation of this apparatus, a brick is placed on the apron, with one end and side next the guidesA m, the mold-box resting upon said apron.

In the rotation of the crank and shaft the bed is raised, carrying up with it the` mold-box, the platen entering said mold-box from the top. In the con tinued rotation of the machine, the bed descends, leaving the mold-box up against the yoke.

The projection 'on the Ageared wheel then engages with an arm of the spider, and partially 'rotates the drum and apron, which carries the brick to its proper position under the mold-box, which descends and incloses it, the brick resting upon the apron, immediately over the center of the bed.

- It will be seen that after the brick has been pressed .the bed falls butv a little way, while the atmospheric pressure admitted to the upper side of the rubber sheet dedects the same, 'and compels the brick to ldrop on to the apron, when the prolongation of the cam allows the bedt'o drop to place ready to receive A another brick, hile that already pressed is passed out nt the 'opposite side, Ain the same movement of the apron. f *y What I claim as my invention, and desire to secure The combination of the frame A, shft'B, cams D F, mold-box E, connecting-rod G, bed H, ,yoke I, platen J, spider K, apron L, 4rollers M, and drum R, when constructed, arranged, and operating substantially as and for the -purposes herein described, set

forth, and shown.

ANDREW J. SPRAGUE.

Witnesses: y l

H. S. SPRAGUE, JAS. I. DAY.

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