US865454A - Machine for making concrete blocks. - Google Patents

Description

PATENTED SEPT. 10, 1907 W. G. TOWER.

MACHINE FOR MAKING CONCRETE BLOGKS.

, APPLICATION FILED SEPT. 26, 1905.

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No. 865,454. PATENTED SEPT. 10, 1907.

' W. G. TOWER. MACHINE FOR MAKING CONCRETE BLOCKS.

' APPLICATION FILED SEPT. 26, 1905 2 SHEBTSSHEET 2.

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UNITED STATES WALLACE Gv TOWER, OF KANSAS CITY, MISSOURI, ASSIGNOR OF TI-IREE-FOURTI-IS TO EDWARD E. EVANS, OF KANSAS CITY, MISSOURI.

MACHINE FOR MAKING CONCRETE BLOCKS.

Specification of Letters Patent.

Patented Sept. 10,1907.

Application filed September 26,1905. Serial No. 280.167.

To all whom it may concern:

Be it known that I, \VALLACE G. TownR, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Machines for Making Concrete Blocks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this'specification.

My invention relates to a machine for making concrete blocks, and has for its object to provide a device of the class described in which a frame comprising skeleton side and end gates is mounted on a suitable platform, and adapted to carry a set of adjustable mold plates; the principal object of my invention being to reduce the cost of such machines which heretofore have been constructed with the mold plates hinged directly to the platform, this latter structure necessitating a great number of mold plates each of sufficient weight to give the required rigidity to the mold.

In a machine constructed according to my invention, the frame is composed of side and end gates suitably mounted on the platform and so constructed that the mold plates may be easily and quickly secured thereto. With this arrangement the mold plates may be made much lighter in weight without weakening the machine, the necessary rigidity being provided by the machine frame to which they are attached.

Other objects of my invention are to provide the improved details of structure which will presently be fully described and pointed out in the claims, reference being had to the accompanying drawings forming part of this specification in which like reference numerals refer to like parts throughout the several views and in which,-

Figure l is a perspective view of a machine constructed according to my invention. Fig. 2 is a perspective view of a front gate carrying a set of mold plates of varying size and design. Fig. 3 is a front elevation of the machine shown carrying a full length rock face mold plate and showing the means for securing same to the frame. Fig. 4 is a top plan view of the machine. Fig. 5 is a sectional view on the line 5*5 Fig. 3. Fig. 6 is a perspective view of a small rock face plate showing the studs which project through the slots in the frame gates.

Referring more in detail to the drawings,1 is the mold platform which is preferably provided with an end offset 2 as shown in the drawing.

On the front of platform 1 and at the side of offset 2 are hinge members 3 arranged in pairs between which fit the hinge members 4 of a front frame gate 5 and end frame gate 6.

Carried on platform 1 is a base plate 7, having legs 8 which support the back frame gate 9. 10 is a similar base plate carried on the offset portion 2 of platform 1, and provided with a leg 11 which carries the back frame gate 12 of the offset portion of the mold.

Rigidly secured to the ends of back plates 9 and 12 preferably by bolts 13 which pass through said gates and through an L on the end gates are the end frame gates 1414* 15 are latches hinged to gates 6, and having lips 16 which fit over the top edges of front gate 5 and end gate 14 to retain same in position; said front and end gates being provided with lips 17 to act as keepers for said latches. 18 is a similar latch of the end gate 14* which engages the adjacent top edge of front gate 5, and is held in position by the keeper 19 on said front gate.

Fitting within the mold frame is an offbearing plate 20, the rear end of which is adapted to slide under the back gates 9 and 12, for a purpose presently set forth. The mold gates 56912 and 141 f are preferably provided with cut out portionsfor the purpose of reducing their weight, and are further provided with horizontal slots 22 near their upper and lower edges. Fitting within said mold frame are a series of face plates 23, which may be of any suitable design, and are provided with threaded studs 24 on their outer surfaces, adapted to project through slots 22 of the frame gates.

25 are thumb nuts engaging studs 24 without the frame, for the purpose of tightening said face plates against the frame gates to hold same in position.

26 is a division plate fitting within the mold between two sets of face plates, and dividing said mold into compartments in order that two blocks which may be of different shape and design, may be made with a single operation of the machine. 1

In the rear of platform 1 is a transverse slot 26, and in base plate 7 directly above slot 26, and extending at right angles thereto is a slot 27.

Extending through slots 2o and 27 is a bolt 28 carrying a nut 29 by which said base plate may be rigidly secured to the platform.

30 are handles on the front plate 5 for raising and lowering said plate during the operation of the mold.

In the operation of my machine, a set of suitable face plates are secured to the frame gates 9 and 12, and the bases 7 and 10 moved forward or backward until said gates are properly adjusted to mold a block of the desired width, when the nut 2-9 on bolt 28 is tightened and the base plates 7 and 10 rigidly secured to platform 1.

By means of latches 15 the frame gates are then locked in their upright positions, and if more than one block is to be made, division plate 26 is inserted between the two sets of mold plates, and the material poured into the formed mold and tamped. As soon as the material has become sufficiently hardened latches 15 and 18 are raised, and the front and end gates 5 and 6 are swung down and the off bearing plate 20 removed with the stone. When a suflicient number of blocks of'any one design has been made that set of face plates may be removed, and others adjusted on the frame gates Without the necessity of dismembering the entire mold. I

By having the off bearing plate 20 fitting beneath the back gates 9 and 12, the necessity for having oifbearing plates of different widths is obviated, as when a narrow stone is being made, the back gates may slide inwardly over the offbearing plate, and when the stone is finished the olf bearing plate may be moved outwardly from beneath said back gates. a block of greater Width, the back gates may be moved outwardly to the end of the off bearing plate and secured in that position in the manner described.

While I have specifically described my invention, 1 do not wish to be understood as limiting myself to the exact details of structure therein shown and described inasmuch as the same may be varied without departing from the spirit of my invention.

Having thus described my invention, what 1 claim as new therein and desire to secure by Letters Patent is,-

1. In a device of the class described, a suitable plat form. side and end gates having slots therein carried on said platform. mold plates having studs thereon mounted on said gates with said studs projecting through the slots in said gates and nuts 011 said studs substantially as and for the purpose set forth.

2. In a concreteblock machine, a plurality of interchangeable face-plates provided with outwardlyproject When it is desired to form I ing screw-studs, in combination with a hinged mold mem her which is provided with openings adapted to receive said studs.

3. In a concrete-block machine. a hinged mold member provided with a slot, and a detachable face-plate provided with means passing through the slot for attaching the face-plate to the mold member.

4. in a concreleblock machine, a hinged mold member provided with two slots, and a detachable face-plate provided with means passing through the slots for attaching the face-plate to the mold member.

5. In a concrete-block machine, a hinged mold member having openings adapted to receive projections on a detachable face-plate in combination with a detachable faceplate which is provided with such projections, and nuts for securing said projections in position.

(3. In a device of the class described, a platform having slots therein. suitable front and end gates, a slotted base plate movable on said platform, a back plate mounted on said base plate. and means extending through the slots in said platform and base plate for binding said base plate to said platform.

7. In a device of the class described. a platform having slots therein, suitable front and end gates. a base plate movable on said platform and having slots therein extending at right angles to the slots in said platform, and bolts extending through said slots for binding said base plate and platform together.

8. In a device of the class described. a platform having slots therein. a front gate hinged to said platform, a slotted base plate movable on said platform and Carrying a back gate. end gates rigid on said back gate, and means for binding said base plate to said platform.

9. In a device of the class described, a. slotted platform, a front gate hinged to said platform, a base plate movable on said platform and having slots therein extending at right angles to the slots in the platform, end gates rigid on said back plate, latches on said end gates engaging said front gate and separate mold plates carried by said gates for the purpose set forth.

In testimony whereof I afiix my signature in presence of two Witnesses.

WALLACE G. TOWER.

Witnesses E. E. Evans, E. E. CARPENTER.

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