US1750511A - Process of and apparatus for molding building blocks - Google Patents

Description

March 1l, 1930. G. W. DUNN l 1,750,511

PRooEss oF AND APPARATUS FOR MoLDING BUILDING BLocKs Filed June 11, 1926 INVEN TOR.

Y :gew/s @VMM ATTORNEY.

Patented Mar. l1, 190

GEORGE W. DUNN, F NEWPORT, KENTUCKY PROCESS OFANI) APPARATUS FOR HOLDING BUILDING BLOCKS V'Application -111116. June 11,

My invention relates to building blocks and methods of molding such blocks, and particularly to a novel type of block and the provision of means of making such tile into readily divisible units, which combined, will make one whole tile.

It is the object of my invention to provide 'a new type of mold for molding building blocks, and in conjunction with this type of mold, to provide means of molding blocks which will be readily separable into Jfractional tiles or portionsof tiles, which combined, will form one whole tile.

In the art, molds for making concrete building blocks have been quite extensively developed, and although the novelv block which I specifically disclose herein possesses decorative value which will form the subject of a design patent application, my mechanical invention relates to the molding ,of blocks, and to the provision of novel means which may be used in combination with one set ofmolds which will enable the manufacturer to make quarter, half and three quarter blocks z5 without the need of additional molding plates for making block units smaller than the regular fulll size block. Y,

In the art, quarter size, half size and three quarter blocks have always required quarter,

'30 half and three quarter sectional dies and division plates for molding. My invention contemplates the use of a standard size mold for molding a block, and when I desireeto make quarter size, half size and three quarter sized blocks, I utilize the same dies and merely insert a cleavage die which will enable the block to be molded in full size, and then be readily separated into divisional sizes by a light tap with a masons tool. While the principleinvolved is adapted for different sized building blocks, I disclaim the use thereof, except in combination with blocks having faces molded so as to represent a series of straight edge bricks laid in a plurality of rows in staggered relation.

Referring to the drawings in which I have shown the preferred t e of-block and the mold with which it may e made Figure 1 is a perspective view of an assembled mold withthe cooperating parts in y finished block, which will enable the block to 192e. serial Ne. 115,366.

molding` osition, and with a cutaway section of the mo d showing the inner appearance.

Figure 2 is a perspective view of a normal full sized block.

Figure 3 is a perspective View of a full 4545 sized block, which will be readily divisible into a one quarter and a three quarter sized block. d Figure 4 is a side elevation of the cleavage Figure 5 is an end elevation of the shown in Figure 4. Figure 6 isa plan view of the die shown in Figures 4 and 5.

Generally indicated at 1 is the mold which forms the impression on the outer face of the tile. YAs shown in Figures 2 and 3, the outer face of the tile islformed to appear similar to four rows of straight edged bricks. rIhe upper row shows two bricks with a vertical rib 2, which indicates the joint between the straight edges of the upper course. The second row has two ribs 3 and 4, which divide the second course into a course in staggered relation to the to course, having the grooves indicating the e ges of adjoining bricks 3a' and 4B. The third courseis shown as corresponding to the top course, and the bo-ttom or fourth course corresponds with the second course.

The end mold, which molds the side facing of a tile which is .to beused at the corner of a building, isv indicated at 5, and although the impression face of the mold is not shown, it will be readily understood that vit corresponds to the front face die, vso that the courses of bricks will appear similarly to the appearance of four courses of bricks.

I rovide for indentin'g a cleavage line in the ace of the block, a tool indicated at 6, which has interspaced grooves 7 and elevatedl portions 8, which when disposed within the mold aligned with either a half or quarter position, will provide a vertical groove in the G0 die be readily separated into smaller units. The tool may be reversible as that indicated, so that by reversing the tool, the same tool may be used in reverse at the dierent divisional positions. It will be noted in this connection, 100

i that a cleavage die is indicated in position at 6a in Figure l. In this position after molding the block will be readily cut into a quarter and three quarter piece with a masonfs' hammer. Should it be desired to make two half size blocks, the tool will be inverted and placed along the middle line of the die. In

" this Iposition, the grooves 7 which fitted against the webs 3 and the corresponding web' of the lower course, will, in a reversed position, fit against the vertical web 2 of the upper course and the vertical web corresponding in the third course.

In Figure 3, the cleavage groove made by the tool is shown at 78. It will be possible to make cleavage grooves along the corner v edges of the block, if desired, in a similar manner, as long as there are regular lines indicating the courses of bricks. IIhe tool will be adaptable for any desired segmentary cleavage, as long as such cleavage occurs along divisional lines of courses.

Modifications in the depth and size of cleavage dies will readily occur to those in molding with a standard sized die, a face of a brick with the die provided with portions to indicate staggered courses ofa plurality of rows of straight edged bricks, and securing against said die `means forming a vertical cleavage groove on the face of the brick along a line adjacent a divisional 'line between. the bricks of one of said indicated courses.

2. A process of molding blocks, which consists in providin a die having vertical interspaced ribs indicating alternate rows of bricks, and horizontal ribs indicating course divisions, securing against a series of interspaced ribs a tool having projections corresponding to said ribs and grooves for filling the spaces between the ribs, and molding a block, with the tool providing a readily fractured indentation dividing the face of said block into units of such size as the length of one brick bears to the length of said block.

3. In combination with a molding die for molding the face of a building block, so as to represent a series of courses of bricks with'k alternate courses in staggered relation, a tool adapted to form a readily divisible cleavage line on the face of the molded block along lines representing whole and half bricks. i

4. In combination with means for molding a building block with ay face representing a series of courses of bricks in staggered relation, means for indenting said face during the molding operation so as to provide cleavdie, having horizontal ribs for molding rep-4 resentations of courses of bricks and vertical ribs for representing individual bricks in courses 1n staggered relation, an auxiliary die havlng portions adapted to engage said vertical ribs and extend within the face of a block to be molded.

7 ..In combination with a block molding dle, -having horizontal ribs for molding representations of coursesof bricks and vertical ribs for representing individual bricks in .courses in staggered relation, an au'xiliary d1e having portions adapted to engage said block to be molded, said auxiliary die being reversible so as to engage ribs in said die in more than` one vertical position.

8. In combination with a block molding die, having horizontal ribs for molding representations of courses of bricks and vertical ribs for representing individual bricks in courses in staggered relation, an auxiliary die having portions adapted to engage said vertical ribs and extend within the face of a block to be molded, with means of retaining said auxiliary die against said moldin die.

GEORGE W. D NN.

` vertical ribs and extend within the face of a 'I los'

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