US1025136A - Molding-machine. - Google Patents

Description

V. W. GRUMMAN. MOLDING MACHINE.

APPLIIOATION FILED DEO.13, 1909.

1,025,136. Patented May 7,1912.

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T Q 7 I I 16XI W- wm VICTOR W. GRUMMAN, OF ZANESVILLE, OHIO.

MOLDING-MACHINE.

Specification of Letters Patent.

Patented May '7, 1912.

Application filed December 13, 1909. Serial No. 532,817.

To all whom it may concern:

Be it known that I, VICTOR NV. GRUMMAN, a citizen of the United States, residing at Zanesville, in the county of Muskingum and State of Ohio, have invented certain new and useful Improvements in Molding-Machines; and I do declare the following to be a full, clear, and exact description of the in vention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improved tile molding machine.

The object of the invention is to provide a simply constructed and efficient machine having readily interchangeable molds for forming various shaped concrete tiles such as shingle, floor and street paving tiles.

With this and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts, as will be more fully described and particularly pointed out in the appended claim.

In the accompanying drawings, Figure 1 is a front elevation of this improved machine with the mold removed; Fig. 2 is a top plan view thereof; Fig. 3 is a front elevation with the completed tile in position ready for removal; Fig. 4 is a vertical longitudinal section of the machine with a shingle mold in position therein, Fig. 5 is a top plan view of the shingle mold detached, Fig. 6 is a perspective view of the pallet used in connection with the mold shown in Figs. 4 and 5.

In the embodiment illustrated, a plate or top 1, is supported by any suitable means preferably by legs as 2, arranged at opposite ends thereof and connected by suitable braces 3 and 4. This top 1 has an angular opening 5, formed therein being here shown as rectangular and is provided with a laterally extending flange 6 arranged therearound below its upper face to form a supporting lip for the mold to be used therewith. A rod 7 is pivotally connected at its lower end with one end of a foot lever 8, fulcrumed intermediately of its ends on a rod 9, arranged between the legs 2. The upper end of this rod is mounted to slide vertically in the brace 3, and the free end thereof is provided with plungers 10, any desired number of which may be used, four being herein shown, and which are designed to support pallets as 11, which form the bottom of the mold to be described. This rod 7 is provided at a point above the brace 8, with a collar 12, fixed thereto in position to limit the downward movement of the rod and which is adapted to be engaged by the lever 13, having an angular lower end pivoted to the brace 3, so as to contact with the collar the upper end of said lever 13, being also angular which is adapted to hold the plungers in elevated position as shown clearly in Fig. 3. Molds of various shapes may be used on this machine each being provided with a base 14, shaped to fit the opening 5, in the plate 1 and to rest on the lip 6,

the side walls of the opening holding said mold against lateral and longitudinal movement. The mold shown in Figs. 1, 2 and 3 is provided with four openings as 15, of a shape which it is desired to form the tiles. Around each of these openings 15, is arranged an upwardly projecting flange as 16, the bottom of said molds being formed by the pallets 11 arranged on the plungers 10, said pallets being shaped to fit within the openings 15.

In the form shown in Figs. 4, 5 and 6, a shingle mold 17 is mounted on the machine, the base plate 14 thereof being shaped to fit the opening 5 in the top plate 1. The open ing 14 in said plate 14 is shaped as shown in Fig. 5 to form a shingle substantially square in shape, with two of its diagonally opposite corners cut off or truncated and a flange 18 extending upwardly therearound. The opening 14' is preferably arranged with the corners thereof opposite the middle of the sides of the plate 14 and hook-like fingers as 19 are pivotally mounted at one side of the plate 14, being preferably journaled in two laterally extending lugs 20 and 21 formed on the outer face of the mold plate 14. These fingers are adapted to be swung up over the mold and the pointed ends 19 thereof are designed to puncture the tile when in plastic condition to form nail holes therethrough. v

A pallet 22 shaped to lit the opening 14 is operable therein similarly to the pallets 11 above described, and is provided around the edge of two sides thereof, between its outoff corners 28 and 24, with a rib 25 designed to form a groove at this point in the molded shingle to provide for the close fitting of the shingles over each other.

In the operation of this machine, a mold being placed in position on a plate 1, suitably formed pallets are arranged on the plunger-s 10 to form the bottom for the molds. The cement in a plastic condition is then placed in the mold or molds, as the case may be, to form a tile of the desired depth, the bottoms of the pallets being arranged to regulate the thickness of the tile to be formed. The upper face is then troweled off smooth and when completed, the foot lever 8 is depressed which forces the plungers l0, and the removable pallets 11, up through the openings 15 in the molds 14 into the posit-ion shown in Fig. 3, from which position they are removed together with the pallets and left on said pallets until they become thoroughly hardened ready for use. A number of the pallets 11 shaped to fit the openings in the various molds are furnished with each machine.

hen the foot lever 8 has been depressed and the plungers carrying the completed tiles elevated into the desired position, the lever 13 is swung around to cause the inner end thereof to pass under the collar 12 on the rod 7 and hold said plungers in raised position. After the tiles have been removed, this lever 13 is swung out of engagement with the collar 12, and pressure is removed from the lever 8, permitting the plungers to descend by gravity into normal position as shown in Fig. 1.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention, as defined in the appended claim.

I claim as my invention:

In combination with a supporting structure of a molding machine and molds thereof, of a horizontally arranged brace, an injector rod mounted for vertical movement through the brace, a cross head carried by the upper end of the rod and composed of a plurality of radially arranged arms, plungers carried by the arms for elevating the pallets of the molds, a foot operating lever movably secured to the lower end of said rod, a stop collar secured to the rod and adapted to contact with the brace for limiting' the downward movement of said rod, a hand operating lever having an angular lower end pivoted to the brace and contact-- ing with the collar and the upper end of the hand lever also having an angular portion which is adapted to hold the plungers in elevated position.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

VICTOR W. GRUlllMAN.

Witnesses J H. lVHARTENBY, EDWIN E. Pownu.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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