US825107A - Machine for making concrete blocks. - Google Patents

Description

PATENTED JULY 3, 1906.

C. O. BRANDELL. MACHINE FOR MAKING CONCRETE BLOCKS.

APPLICATION FILED SEPT. 9. 1905.

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APPLICATION FILED SEPT. 9. 1905.

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' No. 825,107. PATENTED JULY 3, 1906.

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MACHINE FOR MAKING CONCRETE BLOCKS.

APPLICATION FILED SEPT9,1905

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GLAUS O. BRANDELL, OF CHICAGO, ILLINOIS.

MACHINE FOR MAKING CONCRETE BLOCKS- Specification of Letters Patent.

Patented July 3, 1906.

Application filed September 9, 1905. Serial No. 277,718-

To ft whmit it may concern.-

Be it known that I, CLAUS O. BRANDELL, 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 Machines for Making Concrete Blocks, of which the following is a specification.

This invention relates to improvements in an apparatus to be used for making blocks employed for building or structural purposes, and while it is more especially intended to be used for manufacturing con crete blocks having apertures or air-spaces therein, yet it is applicable lor use in making brick, terra-cotta, and the like of similar form; and it consists in certain peculiarities of the construction, novel arrangement, and operation of the various parts thereof, as will be hereinafter more fully set forth and specifically claimed.

The object 01 the invention is to afford a machine of the above-named character which shall be simple and inexpensive in construction, strong, durable, and effective in operation.

In order to enable others skilled in the art to which my invention pertains to make and use the same, I will now proceed to describe it, referring to the accompanying drawings, in which I Figure 1 is a view in elevation as seen from one end of the machine, illustrating by continuous lines the position of the parts when the cores are in their lowered positions and by dotted lines the position the moldbox will occupy in the initial step of filling the same. Fig. 2 is a view, partly in section and partly in elevation, taken on line 2 2 of ,1

Fig. 3 looking in the direction indicated by Fig. 3 is a plan view of the machine. Fig. 4 is a detached perspective view of one of the plates used as a bottom for the mold-box. Fig. 5 is a rear view in elevation of the machine. Fig. 6 iS a plan view of the mold-box, showing it removed from the frame and illustrating by dotted lines the tilted positions thereoi when it is desired to remove the block. section and partlyin elevation, of a portion of the mold-box and a part of the supportingfrarne, showing the means of mounting the i Fig. 8 is an inner perspecformer thereon. tive view of one end of the supporting-frame. Fig. 9 is an end view in elevation and partly in section of a portion of the supporting- Fig.7 is a view, partly in l l l l will rest.

frame, showing the mold-box mounted thereon and illustrating it by continuous lines partly filled with concrete and by dotted lines some of its other positions it will occupy in the operation of forming and removing the block. Fig. 10 is a similar view of like parts, but showing the cores raised and the moldbOX in the position it will assume when it is completely filled. Fig. 11 is a perspective view of one of the blocks formed by the machine. Fig. 12 is a fragmental perspective view of one of the engaging lugs or catches located on the ends of the rear part of the mold-box. Fig. 13 is a similar view of one of the cam-levers efiiployed for engagement with said catches. Fig. 14 is a perspective view of a portion of the movable frame which carries the cores. Fig. 15 is a similar view of one of the blocks used for securing the cores to their frame, and Fig. 16 is an end view of the shaft on which the front portions of the mold-box is mounted and a part of the removable bottom of the box.

Like numerals of reference refer to corresponding parts throughout the different views of the drawings.

The reference-numerals 20 designate the end pieces of the supporting-frame, each of which has a front 21 and rear leg 22, united near their lower ends by means of cross-bars 23 and at their upper ends by means of transverse portions 24, which, as shown, are inclined forwardly. The cross-bars 23 of the end pieces 20 are connected to ether by means of a bar 25, which extends ongitudinally with the main frame and is preferably T-shaped in cross-section. One of the portions 24 is provided on its outer edge near its rear end with a lug or extension 26 for the purpose to be presently explained. The transverse portions 24 on the upper ends of the end pieces 20 of the supporting-frame are united together near their rear ends by means of a bar 27, which extends longitudi nally with the main frame and has on its upper surface a series of transverse ribs 28, on which the detachable plates of the mold-box Resting on the upper rear portion of the bar 27 and secured thereto by means of downwardly-extending projections 29 and rivets 29 is a plate 30, which forms the rear and stationary part of the mold-box. This plate has at each of its ends a horizontallyextending catch or lug 31, each of which is provided with a downwardly-beveled hooked portion 32 (see Fig. 12 of the drawings) to enroe IIO

gage the cam 33 on one of the levers 34, which are fulcrumed on the outer surface of the end plates 35 of the mold-box. Each of the end plates 35 is provided on'its front edge with apertured lugs 36 to receive pintles 37, used for pivotally securing said plates to the front plate 38 of the mold-box, which plate is provided at its ends with apertured lugs 39 for the reception of said pintles' This plate is rigidly secured to a shaft or bar 40 which extends longitudinally with the main frame from one of theend pieces 20 to the other thereof and has its ends reduced and secured in hearings or journal-boxes 41, located on the upper surface of the transverse portions 24 near their front ends. As shown in Figs. 6, 7, 10, and 16 of the drawings, the shaft 40 is provided on its inner portion with a series of lugs 42 to engage the downwardly-extendin flange 43 on the front edge of the removab ie plates 44, which plates also have at their rear edges a downwardly-extending flange 45, as shown. Pivotally secured at its lower end to each of (the front legs 21 of the main or supporting frame is a bar 46, the upper end of which is rigidly connected to a supporting-plate 47, which lies vertically and longitudinally near the front portion of the main frame and is pivotally connected, by means of links 48, located near each of its ends, with the front plate 38 of the mold-box.

Located on the inner surface of each of the legs 22 and in an inclined position is a rack 49, with which the traveling gears mesh, which gears are mounted near the ends of a shaft 51, which carries on one of its ends a lever 52, used when it is desired to raise and lower the cores 53, which may be of any suitable size, form, and number, but usually of the shape in cross-section to correspond with the openings 54 in the plates 44, which are used to form the bottom of the mold-box. Located on the inner surfaceof each of the end pieces 20 and extending in parallelism with the-rack 49 thereon is a bar 55, which is formed with a channel 56 to receive a movable rack-bar 57, which bars also engage the pinions or gears 50, but on the opposite side thereof from that engaged by the rack 49. Each of the bars is provided at a suitable point with an inwardly-projecting lug 58 to act as a stop for the core-carrying frame 59, which is horizontally mounted on the upper ends of the rack-bars 57 and extends from near the inner surface of one of the end pieces 20 to the other. This frame for the cores is provided with a series of longitudinally-extending slots or openings 60 to receive the reduced portions 61 of the blocks 62, used for securing the cores 53 to the upper surface of said frame. As shown in Fig. 15, the portion; 61 of each of the securingblocks is formed with an opening 63 to receive a screwthreaded bolt 64,which engages the lower portion of each of the cores, thereby holding them in'an upright position in such a manner as to permit them to be readily and suitably adjusted. The lever 52, used for operating the cores 53, is provided on its inner surface with a yielding grip-piece 65,which when the lever is thrown to the position shown by dot ted lines in Fig. 1, so as to raise the cores,will

engage the catch or lug 26 on one of the portions 24 of the supporting-frame and by pressing the piece 65 toward the lever it will be disengaged from said catch, thus permitting the cores to be lowered.

The operation of the machine is simple and as follows: When it is desired to fill the rnold-box, one of the plates 44, which will form the bottom of the box, is placed within the same while the cores are in their lowered positions and the parts are occupying the positions shown by continuous lines in Figs. 1 and 2 of the drawings. When one of the plates has been placed in position in the bottom of the box, it is apparent that the flange 43 on the front edge thereof will engage the lugs 42 on the shaft 40, while its other flange 45 will rest on the ribs 28 of the bar 27, to which the rear plate of the box is rigidly secured. By raising the levers 34 on the end plates 35, so as todisengage the cam projections 33 thereon from the hooks 32 of the catches or lugs 31 and by holding said end plates in their normal positions, it is apparent that the front plate, bottom, and end plates of 'the mold-box may be turned to the position shown by dotted lines in Fig. 1 and by continuous lines in Fig. 9 of the drawings, in which operation the lugs 66 on the inner surface of the lower rear portion of each of the end plates 35 will engage the bottom plate 44, so as to lift and hold the same to and in an inclined position. In tilting the above named portions of the mold-box forwardly it is evident that the links 48, connecting the supporting plate or bar 47 with the front plate of the mold-box, will be moved for wardly, so as to receive and support on a lug or rib 67 on the inner surface of said plate the upper portion of the front plate of the moldbox. When in the position shown by dotted lines in Fig. 1 and continuous lines in Fig. 9, the beveled projections 68 on the outer sur. face of each of the end plates 35 near its front upper portion will engage the ends of the supporting bar or plate 47 and hold the end plates in their original or normal positions with respect to the bottom'and front plate of the mold-box. When the box is in the abovenamed position, a sufficient quantity of concrete, cement, or other suitable material 69 to give a suitable facing or finish to the block is placed in the box, when it may be turned to the positions shown by continuous lines in Figs. 1, 2, and 10 of the drawings, whenthe cores 53 may be raised by turning the lever 52 from the position indicated by continuous lines in Fig. 1 to that shown by dotted lines in said figure, which operation, through the instrumentality of the racks 49, gears 50, and rack-bars 57, will lift the cores to the desired position, where they may be held bymeans of the engagement of the grippiece with the catch 26 on the supportingframe. hen the cores have thus been raised, the unfilled portions of the mold-box may be supplied with concrete or the material out of which the block is made. To remove the block, the levers 34 are disengaged from the catches 31, when the moldbox may be tilted to the position indicated by dotted lines at 71 (see Fig. 9) and at 72 of Fig. 6. In thus tilting the mold-box the end plates 35 should be opened outwardly, which operation will disengage the lugs 66 thereon from the plate or bottom 44, sothat the lugs 42 on the shaft 40 will slide the said plate forwardly, and thus carry the block a slight distance from the rear plate 30, when it may be removed by lifting the plate 44 with the block thereon. After the block has been removed the end plates 35 should be closed and fastened, when by tilting the boX further forwardly from the position shown by dotted lines at 71 (see Fig. 9) the bars 46 and sup porting-plate 47, through the instrumentality of the links 48, will be moved forwardly, thus permitting the parts to assume the positions shown by continuous lines in said figure, when the front plate may be allowed to rest on the lug or rib 67 on the inner surface of the supporting-plate. In this operation the links 48 will cause sufficient movement of the bars 46 and plate 47 to allow the plate 38 to pass the inner upper edge and inner surface of the supporting-plate, as is apparent.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a machine for making concrete blocks, the combination with a supportingframe, of a detachable mold-box mounted thereon and pivotally connected to the front portion of the frame, an apertured and movable bottom for said box, a series of cores vertically movably mounted on the main frame and adapted to fit in the apertures of said bot- I tom, means movably mounted on the frame to raise and lower the cores, and a supporting- I bar pivotally connected to the front portion I of the frame and also to the front portion of a the mold-box for supporting the latter in its tilted position, substantially as described.

2. In a machine for making concrete 5 blocks, the combination with a supportingframe, of a detachable mold-box mounted thereon and pivotally connected to the front portion of the frame, an apertured bottom for said box, racks vertically located on the end pieces of the supporting-frame, rack-bars vertically movably supported on said end pieces in parallelism with the said racks, a core-frame mounted on the upper ends of said rack-bars, a series of cores mounted on said frame and adapted to operate in the apertures of the bottom of the mold-box, a shaft horizontally and movably located between the racks and rack-bars, a gear on said shaft near each of its ends to engage said racks and bars, an operating-lever on one end of said shaft, means on the main frame to engage said lever when the cores are in their raised positions, and a supporting-plate longitudinally located near the front portion of the frame and pivotally secured thereto as well as to the mold-box for the purpose of supporting the same when the latter is in its tilted position, substantially as described.

' 3. In a machine for making concrete blocks, the combination with a supportingframe consisting of two end pieces connected together longitndinally in their lower portions and each provided on its upper end with a transverse portion, a bar secured longitudinally of the frame on the upper portion of said transverse parts, a back plate rigidly secured to said bar and having at each of its ends a catch, a longitudinally-extending shaft journaled at its ends on the front por tion of said transverse parts of the frame and having on its inner surface a series of lugs, a front plate rigidly secured to said shaft, end plates pivotally secured to the ends of the front plate, a camlever fulcrumed on each of said end plates near its free end to engage the catches on the rear plate of the mold-box, an apertured bottom having at its front edge a do'wnturned flange to engage the lugs on said shaft, cores vertically movably mounted on the supporting-frame and adapted to operate in the apertures of said bottom, means to raise and lower the cores, and a supportingplate pivotally secured to the front portion of the supporting-frame as well as to the front plate of the moldbox for supporting the latter when in its tilted position, substantially as described.

CLAUS O. BRANDELL.

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