US1190912A

US1190912A - Apparatus for compressing plastic material.

Info

Publication number: US1190912A
Application number: US5360515A
Authority: US
Inventors: Max Koller
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-10-01
Filing date: 1915-10-01
Publication date: 1916-07-11
Anticipated expiration: 1933-07-11

Description

M. KOLLER.

- APPARATUS FOR COMPRESSING PLASTIC MATERIAL- APPLICATION men on. 1. "H5.

1 1 90,91 2'. Patented July 11, I916.

MAX KOLLER, OF WINTERTHUR, SWITZERLAND.

APPA RATUS FOR, GOMPRESSING PLASTIC MATERIAL.

Specification of Letters Patent.

Patented July 11, 1916.

Application filed October 1, 1915. Serial No. 53,605.

To all whom it may concern Be it known that I, MAX KoLLER, a citizen of the Republic of Switzerland, residing at lVinterthur, Switzerland, have invented new and useful Improvements in Apparatus for Compressing Plastic Material; and I do hereby 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, referencebeing had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

The object of the invention, as set forth in the following description and shown in the accompanying drawing is the manufacturing of plates of compressible material, especially from beton. Such plates have heretofore been fabricated by means of heavy presses with pressures of about 200 atmospheres, which renders necessary apparatus of exceedingly expensive and complicated structure.

On the contrary the compression of the mass by the apparatus according to the present invention is obtained by means of a particular method of stamping.

The necessary strokes are caused by a spring influenced plunger, acting on a by draulic piston. In this manner hydraulic strokes of a required strength may be produced and transmitted upon the proper stamping apparatus by a corresponding system of pipes.

An essential feature of this stamping apparatus is that the strokes act indirectly on the mass to be worked so that the part of the apparatus acting directly on the mass is not lifted from it. This part has essentially the form of a hydraulic piston. A large mass is given to the corresponding cylinder which is guided in vertical direction. The above described hydraulic strokes, acting on the piston and cylinder, tend to suddenly lift the heavy mass of the cylinder and cause a corresponding counter pressure on the material to be compressed The strokes may be made in such a tempo at such intervals that they coincide with the effect of the mass of cylinder falling down, so that the pressure of reaction is correspondingly increased. The whole stroke is entirely transmitted to the material to be worked, as the mass of cylinder is entirely free at the moment of the stroke, so that the strokes do not influence any otherparts of the machine.

Besides the support, no part of the apparatus will be mechanically strained and the construction of the apparatus will therefore be simple and cheap. Finally, by providing air buffers, the movement of the mass of the cylinder resulting from the water stroke, is limited and due to this working a regular tempo is secured.

The apparatus for producing the strokes can, if necessary, be advantageously united constructively with the stamping apparatus.

In the accompanying drawings Figure 1 is a side elevation of a stamping apparatus in connection with the hydraulic spring 111- fluenced plunger, with parts thereof in vertical section; Fig. 2 is a vertical cross section through the hydraulic stamping cylinder, Fig. 3 shows plan views of the clamping keys. Fig. 4 is a side elevation of a modified form of the invention with parts thereof in vertical section. v

In Fig. 1 the stroke apparatus comprises a crank 1, connected by a spring 2 to av weighted and guided cross head 3 which carries a plunger 1 for producing hydraulic strokes within a cylinder 5. The stroke apparatus is actuated by. a pulley 6 driven by a belt 7 An air chamber 8 provided with a cock 9, operates to cut in or out suddenly the strokes. A pipe 10 conducts the hydraulic strokes from the stroke apparatus to the stamping, apparatus.

The material 11 to be worked is filled into a-mold 12 (Figs. 1 and 2). A piston 13 is actuated by the hydraulic strokesv and transmits them to a plate 14, which lies on the material to be worked. Said piston is moved within a cylinder 15 formed of a heavy weight and incases with ita filling of water 16 upon which the hydraulic strokes act. 17 designates two air buffers mounted on a guide frame 18 on which the cylinder 15 is movably mounted.

The whole system, consisting of the piston 13, cylinder 15, and buffers 17, can be raised and lowered into and out .of operative position by means of the hydraulic cylinder 18 mounted on the frame and operatively connected with the cylinder 15, the operation of the hydraulic cylinder being controlled by a three-way cook 19 and the inlet and outlet pipe 20, after the keys 21 (Figs. 1 and 3) are opened. In this way the frame 12 on the bed 22 can be removed from underneath the piston 13 and be filled or emptied in the known manner.

The working of the apparatus takes place in the following manner: The spring influenced plunger 4: for producing the hydraulic strokes is actuated by the belt 7 and the pulley 6. The cook 23 is first closed and cock 9 is opened so that the working of the spring influenced plunger on the stamping apparatus is cut out. The material such as beton to be worked is filled into the frame 12, pulled from underneath the piston 13; the frame 12 with the plate 14: is then pushed under the piston and cylinder which are then lowered by means of the hydraulic or similar lifting means and the keys 21 are closed. If now, the cock 23 is opened and the cock 9 closed, the hydraulic strokes act on the stamping apparatus and on the material to be worked. By the reversed succession of these maneuvers the stamping apparatus will be stopped and the finished plate is freed.

Fig. 4 shows an embodiment of the invention wherein the spring influenced plunger, for producing the hydraulic strokes, is united in a constructive manner with the stamping apparatus, the piston 1 working directly in the water filled piston 13.

I claim 1. In an apparatus for compressing plastic material, the combination of a mold for the material to be compressed, a piston resting upon the material in said mold, a weighted cylinder for said piston filled with a liquid, and means for producing hydraulic strokes in said liquid.

2. In an apparatus for compressing plastic material, the combination of a mold for the material to be compressed, a weighted cylinder, a piston resting upon the material in said mold andmovable in said cylinder,

a liquid within the cylinder, a spring in-- fluenced plunger for producing hydraulic strokes within the liquid, and means for actuating said spring influenced plunger.

3. In an apparatus for compressing plastic material, the combination of a mold for the material to be compressed, a weighted cylinder, a piston movable in the latter and resting upon the material in said mold, a liquid within the cylinder, buffers for absorbing the reactive eifect of the cylinder, a spring influenced plunger for producing hydraulic strokes within the liquid, arid means for driving said spring influenced plunger.

4. In an apparatus for compressing plas- Copies of this patent may be obtained for five cents each, by addressing Washington, D. 0.

tic material, the combination of a mold for the material to be compressed, a weighted cylinder, a piston movable in the latter and resting upon the material in said mold, a liquid within the cylinder, a spring influenced plunger for producing hydraulic strokes within the liquid, means for driving said plunger, an air chamber in connection with the cylinder, and a cock for interrupting the connection.

5. In an apparatus for compressing plastic material, the combination of a mold for the material to be compressed, a weighted cylinder, a piston movable in the latter and resting upon the material in said mold, a liquid within the cylinder, a spring influenced plunger for producing hydraulic strokes within the liquid means for driving said plunger, an air chamber in connection with the cylinder, a cock for interrupting said connection and buffers for absorbing the reactive effect of the hydraulic strokes exercised on the material not absorbed by the cylinder.

6. In an apparatus for compressing plastic material, the combination of a frame for the material to be compressed, a weighted cylinder, a piston movable in the latter and resting upon the material in said frame, a liquid within the cylinder, a spring influenced plunger for producing hydraulic strokes within the liquid, means for driving said plunger, an air chamber in con nection with the cylinder, a cock for interrupting said connection, and a hydraulic lifting means connected with the cylinder.

7. In an apparatus for compressing plastic material, the combination of a mold for the material to be compressed, a weighted cylinder, a piston movable in the latter and resting upon the material in said mold, a liquid within the'cylinder, a spring influenced phmger for producing hydraulic strokes within the liquid, means for driving said spring influenced plunger, an air chamber in connection with the cylinder, a cock for interrupting sa'id connection, buffers for absorbing the reactive effect of the hydraulic strokes exercised on the mass not absorbed by the cylinder, and means for cutting out the working of the buffers.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

MAX KOLLER.

Witnesses CARL GUBLER, ARNOLD LEHNER.

the Commissioner of Patents,

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