US308303A

US308303A - carman

Info

Publication number: US308303A
Authority: US
Publication date: 1884-11-18
Anticipated expiration: 1901-11-18

Description

(No Model.) 4 SheetsShet- 1.

O. L. GARMAN.

BRICK MACHINE.

No. 308,303. Patented Nov. 18, 1884.

4 Sheets-Sheet 2.

(No Model.)

0. L. OARMAN. BRICK MACHINE.

Patented Nov; 18, 1884.

.4 d if y'iw/e as e s z Sheets-Sheet- 3.

(No Model.)

0. L. OARMAN. BRICK MACHINE.

N0. 308 303. Patented Nov. 18, 1884.

Jmenior H wmm 4 Sheets-Sheet 4,

0.'L. OARMAN.

8 BRICK MACHINE.

Patented Nov. 18, 1884.

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NITE STATES CHARLES L. CARMAN, OF CHICAGO, ILLINOIS, ASSIGNOB, BY DIRECT AND MESNE ASSIGNMENTS, TO THE CARMAN BRICK MACHINE COMPANY, OF

SAME PLACE.

BRICK-MACHINE.

BPECIIEICATION forming part of Letters Patent No. 308,303, dated November 18, 1884.

Application filed February 7, 1834. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES L. CARMAN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Brick-Machines, of which the following is a specification, to wit:

This invention relates to an improvement in brick-machines; and it consists in certain to peculiarities of construction and arrangement of the same,whereby the machine is simplified and cheapened, and made to press and repress the bricks without extra handling, substantially as will be hereinafter more fully set I 5 forth, and pointed out in the claims.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the accompanying drawings,in which Figure 1 is a plan view of my machine. Fig.

-2 is a similar View with the cap-plate removed. Fig. 3 is alongitudinal section of the machine. Fig. 4. is a cross-section of the main portion of the machine. Fig. 5 is a similar view taken through the pressure-segments,

showing a brick under operation. Fig. 6 is an enlarged detail section of the mold-box in the act of discharging a brick, and Fig. 7 is a 37) View of one end of the cap and feeding-opening. Fig. 8 is a modification.

A represents the main casting or bed of my machine, cast with the four side wings or arms, A, and upon which is placed the slide B. This 3 5 latter is a rectangular casting containing two mold boxes or openings, 2), for the reception of the clay and formation of the bricks. Over this slide is secured a cap, C, having side wings, C, of the same general form .as the 40 base A A.

The openings I) extend across the slide, and in them are placed the plungers D D, having their rear ends formed with a nose, cl (1, and the inner ends of which form sides of the mold-boxes, while the edges or sides of the slide are formed with a rack or series of teeth, I) b, which engage with the teeth of the segment-arms E E, which are pivoted upon pins or studs a a on the ends of the wings A of I the base, and are formed with depressions e e,

for engagement with the nose (I d of the p1ungers, as will be presently explained.

The bottom and rear side of each mold-box isprovided with a movable section, F, which slides vertically in a dovetail groor e in the slide, and is upon i ts under side provided with a friction-roller, f, which, as the slide moves backward and forward, is at proper points near the center of the'machine caused to rise by an inclined way, a, on the base or bed casting, as in Fig. 3, till the bottom section is ona level with the top of the slide, and the pressed brick may be readily removed.

The under side of the plungers at their outer ends, d, are provided with small friction-rollers d, and the bed is at each end cast with a cam or incline d on its outer ed e which draws back the plungers sufficient to admit of the charging of the box with the material, and at or near the center the box is also cast with smaller inclines or' cams (2*, which slightly withdraw the plungers after pressing, in order to free the brick and allow the section F to rise for discharging.

It will be evident, on an inspection of the drawings, that when theslide is at the extreme end of its stroke, one of the mo1d-boxes will be under the feed-opening of the cap, and

clay may be fed into it from any desired chute or receptacle located above the same. As the slide begins its reverse movement, the moldbox and plungers are carried beneath the cap, and the rack moves the cogged segments with it. It will be observed, however, that the nose of the plunger and the corresponding depressions in the segments do not contact till the mold-box is entirely beneath the cap and the clay cut off. The plungers are then forced inward, and the material begins to be pressed. By an inspection of the drawings, Fig. 2, it will be seen that the pressure thus applied is in the nature of a toggle, and results in a greater pressure and less inward movement of the plungers as the slide approaches a line through the pivotal points of the pressing segments, and thus obtains a motion which gives the best results. After passing this line the pressure is relaxed as the segments move drawn slightly back by the small cams on the 7 bed to release the brick, and at the same time the'movable section of the mold-box is lifted and the brick discharged through a slot, 0, in the cap or covering plate, where it may be removed by an attendant, if desired. The opposite mold-box is now in a position for filling, and the same process is repeated, making two bricks at each complete stroke of the slide. It will be seen that this arrangement gives a minimum of friction and wear, using a rolling surface wherever force is applied, and causing less liability of uneven wear than would be the case if the pressure were obtained by cam-surfaces.

The machine may be made to press the brick at one end and re-press in the other, without handling or feeding the pressed brick, by the device shown in Figs. 6 and 7. In the slot 0 of the cap-plate is secured a thin steel plate, G, which, when the movable section of the mold-box is lifted and carried forward, slides beneath the brick, as in Fig. 6, and when the section is retracted the brick is left upon the plate. The next succeeding brick shoves the first forward till it is received by the section of the other mold-box, and carried back' through the opposite end of the machine, be ing re-pressed and discharged at that end through the feed-opening, by means of a small cam-track, 9, (shown in dotted lines in Fig. 7,) placed at this point to lift the discharge-section. made removable, and the machine may in a few moments be altered to suit the requirements of the business. v

I do not regard the cogged rack on the slide and teeth on the segments as absolutely re quired, as there would be sufficient friction of the parts to carry the segments and slide back and forth together, but prefer to add these features, as they do not materially increase the cost or friction of the machine, and make the registry of segment and plunger absolutely sure.

The same movement and pressure of the plungers may be obtained by the device shown in Fig. 8, which shows the segments replaced by a link pivoted to the plunger and having a slotted connection with the pins on I the ends of the side wings, A, and I regard this modification as the mechanical equivalent of the device previously described; but I prefer the former, as the slotted link will not act so smoothly, but cause a slight jar or shock at the point of initial pressure, which I desire to avoid as injurious to the machinery.

Having thus fully described my invention, what I claim as new, and desire to secure b Letters Patent, is-- 1. In a brick machine, a slide containing the pressure-chambers, having a reciprocat- This cam-track and the steel plate are ing motion beneath a stationary cap or cover, substantially as shown and described.

2. Ina brick-machine, a slide carrying the pressure-chambers and their plungers, and means, substantially as described, for giving it a reciprocating motion upon the bed or main frame, in combination with a toggle link or lever engaging both the main frame and the plungers, substantially as and for the purpose set forth. v

3. In a brick machine, a reciprocating pressure-chamber provided with suitable plungers, in combination with a bed or main frame having toggle-connections for advancing the plungers, and cams or inclines for retracting them, substantially as shown and described.

4. In a brick machine, a reciprocating slide carrying the pressure chambers and their plungers, in combination with rocking segments pivoted on the main frame beside the slide and moving therewith, whereby the initial movement of the plungers is smooth and without jar, substantially as shown and described.

5. In a brick machine, a reciprocating pressure-chamber carrying suitable plungers, in combination with a rolling surface, past which the slide moves, and by which the plungers are advanced, substantially as shown and described. 7

6. In a brick machine, a reciprocating slide. carrying the. pressure chambers and their plungers, and having an L-shaped section of the bottom, and one end of said chamber movable and provided with a frictionroller, in combination with the main frame formed or provided with inclines for retracting the plungers to free the brick, and inclines forlifting the movable section to discharge it, substantially as and for the purpose set forth.

7. In a brick-machine, a main frame provided with a cap or covering plate, beneath which the mold-boxes are reciprocated, and provided with an opening through the cap at the extremity of motion of the boxes, in combination with a movable section in the moldboX, and means, substantially as described, for lifting it through the opening in the cap for discharging the brick, substantially as and for the purpose set forth.

8. In a brick machine, a reciprocating slide carrying the pressure-chambers, having a movable section therein and means for lifting it at stated intervals, in combination with a covering plate, beneath which the slide moves, formed with a discharge opening, through which the brick is lifted by the movable bottom, and a thin plate or. blade secured within the discharge-opening of the cap and adapted to slide beneath the brick, substantially as and for the purpose set forth.

' 9. In a brick-machine, a main frame pro- ICC IIO

vided with a feed-opening at each end and a the machine to discharge the bricks, substan-' discharge-opening in its center, in c0mbinatially as shown and described. 1 10 tion with a pair of reciprocating pressure- In testimony whereof I affix my signature in chambers provided with suitable plnngers, presence of two witnesses.

and each having a movable section, means for CHARLES L. GARMAN. advancing and retracting the plungers to Witnesses: press the brick, and means for lifting the m0vi CHAS. KRESSMANN,

able sections of said chambers at the center of l i WALTER S. MOARTHUR.