US1437054A - Apparatus for and method of making building blocks - Google Patents

Description

A. G. HATCH.

APPARATUS FOR AND METHOD OF MAKNG BUILDING BLOCKS. APPLICATION FILED JAN. 14, I921.

l 3'7 054 Patented Nov. 28, 1922,

.Methods of Making- Patented Nov. 28, 1922, V I

ARTHUR G.

HATCH, 0F DULUTH, MINNESOTA.

APPARATUS FOR AND METHOD MAKING BUILDING BLOCKS.

Application filed January 14, 1921.

To all whom it may concern.

Be it known that I, ARTHUR G. HATCH, a citizen of the United Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Apparatus for and Building Blocks, of which the following is a specification.

This invention relates to a new proved method for making building block, and more particularly to a method for easting and removing the blocks from the mold in an eflicient manner.

In casting concrete blocks in largequantities it is highly desirable that the block and form be so related that the block may be easily removed from the form without difficulty and without block even if it is comparatively green. The rapidity of operation is much increased if the block may be removed relatively green, since the time each lot requires the use of the molds is thus reduced.

It is an object of the present invention to provide an apparatus for making building blocks and system of using that apparatus which will efliciently and rapidly produce blocks.

It is a further object to provide a continuous multiple block mold so constructed that blocks may be readily removed therefrom.

Other and further objects will appear as the description proceeds.

I have illustrated a preferred embodiment of my invention. in the accompanying drawings, in which- Figure 1 shows a plan view of a mold layout with the concrete delivery car and track;

Figure 2 is a sectional elevation of Figure 1 taken on line 2-2 of Figure 1; V

Figure 3 is a view partly in section illustrating the method of removing the blocks from the mold; and

Figure 4- is a section taken on line 4l-1 of Figure 1.

In the drawings the trackway 5 is located between two long mold boxes 6 and is adapted to carry the mortar delivery car 7 having the lateral chutes 8. The mold boxes are provided with the spaced arcuate depressions 9 each having a groove in its base to receive the division plates 10. The molds 6 are supported by cross members 11 located under the depressed portions 9. The supporting members 11 are cut away at 12 un- States residing at and imdanger of damage to the Serial No. 437,273.

der these depressed portions. The arcuate portions 9 are formed upon a curve such that the center of curvature is located substantially at the point 1.3 or the junction of the end and top faces of the blocks.

In the use of the block casting apparatus shown, the car '7 is filled with mortar, the division plates 10 are located in the mold boxes 6 and the various mold sections are filled from the car 7 through the chutes 8, the upper surfaces of the blocks 14 being smoothed off. Steam is introduced under the lower surface of the molds passing from section to section through the passages 12 in the supporting members 11. The steam greatly facilitates the hardening of the blocks.

lVhen the blocks have properly hardened they are removed in order from one end as -ndicated in Figure '3. The division plate is first removed and the block 14.- is then swung upwardly about its end which is adjacent the next division plate 10. The curve of the portion 9 of the block permits the block to be rotated about the point 13 and thus to be easily removable from the' mold without danger of injury to the block flanges, even though the block may be still somewhat green. It 1s impossible to remove a rectangular block in this manner as the edge equiv alent to the edge13 of the present block wouldbe spalled off as would also the lower edge below it. It is impossible to safely re move a green rectangular block in this manner and even more impossible to similarly remove a block having downwardly extending flanges of any shape other than that of applicants since the flanges would obviously be broken away at their point of junction with the block.

This particular construction of molds may be added to by having a plurality of molds or of mold boxes 6, one on each side of the track, the chutes 8 upon the car being lengthened as necessary.

The particular formation of the mold and of the end flanges of the blocks greatly facilitates removal of the blocks without danger to the flanges and permits them to be removed more readily and easily than would be the case were the flanges of any other de sign than that shown.

claim:

1. The method of making building blocks which comprises placing division plates at predetermined intervals in molds capable of holding a plurality of blocks, pouring block-forming materials in the plastic state into the spaces between division plates until said spaces are filled, and, after the material has hardened, progressively removing the division plates and building blocks, alternately removing a division plate and then the adjacent block, the block being removed by swinging its free end upwardly, the contour of the block permitting such swinging without damagin thrust between the next division plate and the adjacent face of the block 2'. The method of making building blocks which comprises placing division plates at predetermined intervals in molds capable of holding a plurality of blocks, pouring blockforniing materials in the plastic state into the spaces between division plates until said spaces are filled, and, after the material has hardened, progressively removing a division plate and then the adjacent block, the block being removed by swinging its free end upwardly about its opposite upper corner, the corner pivoting against the adjacent division plate the contour of the block permitting such swinging without damaging thrust between the next division plate and the adjacent face of the block.

8. The method of making building blocks which comprises placing division plates at predetermined intervals in molds capable of holding a plurality of blocks, pouring blockforming materials in the plastic state into the spaces between division plates until said spaces are filled, and, after the material has hardened, progressively removing a division plate and then the adjacent block, the block being removed by swinging its free end upwardly about its opposite upper corner, the corner pivoting against the adjacent division plate, the lower portion of: the end of the block being arcuate in form and making sliding contact with the adjacent surface of the mold during its swinging movement.

4:. Apparatus for making building blocks comprising a multiple block mold having a plurality of transverse depressions therein, and division plates removably fitting in the mold in said depressions, the mold having transverse grooves in the base oi the depressions to receive the division plates.

5. Apparatus for making building blocks comprising a multiple block mold having a plurality of transverse depressions therein, the depressions being a rcuate in longitudinal section, and division plates reniombly fitting in the mold in said depressions.

6. Apparatus for making building blocks comprising a multiple block mold having a plurality of transverse depressions therein, and supports for the mold located adjacent the lower face of the depressions.

7. Apparatus for making building blocks comprising a multiple block mold having a plurality of transverse depressions therein, and supports for the mold located adjacent the lower face of the depressions, the supports having depressions in the top thereof adapted to permit the passage of steam.

8. Apparatus for making building blocks comprising a multiple block mold having a plurality of depressions therein, and a passage adjacent the lower face of the mold adapted to admit steam, the passage being restricted adjacent the depressions in the mold.

Signed at Duluth, Minnesota, this 6th day of January, 1921.

ARTHUR G. HATCH.

Images