US2269557A - Apparatus for removing tile from molds - Google Patents

Description

Filed June 24, 1940 2 Sheets-Sheet 1 \V gjwve/wtov AUGUST 11' SEXT N Jan. 13, 1942. A. H. SJEXTON 2,269,557

APPARATUS FOR REMOVING TILE FROM MOLDS Filed June 24, 1940 2 Sheets-Sheet 2 FE G 2 Ammw $1 Hi fimxra nm at the lower edges. Mold engaging hooks I I are secured to the strips I at longitudinally spaced points, the hooks being secured to the outer surfaces of the strips and having their lower hookshaped ends I2 beneath the strips III and projecting inwardly beyond the lower edges of the strips. These hooks, as illustrated in Fig. 2, engage the free edges of the side sections of a tile forming mold I3 when the mold is inverted and arranged over the unit.

The lower ends of the arms 8 have openings for the reception of rods I4 which serve to pivotally connect link members I5 to the arms. Sleeve members I6 surround the bars I4 between the arms 8 to maintain spaced relation. The links l5 are normally disposed in a substantially horizontal plane and extend inwardly toward the central portion of the unit, the inner ends of the links being connected by pivots H to lugs I8 carried by a sleeve-like crosshead I9. This member is mounted for vertical sliding movement on a tubular guide 28 which is connected to the under side of the table top 6 by a plate 2i. These members may be connected by any suitable means, welding being preferable for convenience in manufacture and the elimination of bolt heads or other obstructions on the upper of registering projections 22, to which the upper ends of a second set of link members 23 are pivotally secured. These members have their lower ends pivotally connected as at 24 to the intermediate portion of a foot lever 25 formed from a pair of spaced angle bars and pivotally connected at one end to bracket members 26 depending from the transversely extending angle 5 at the rear of the frame. The forward end of the foot lever projects a considerable distance beyond the angle member 5 at the front of the machine and is provided with a treadle 2'! for engagement by the foot of the operator.

Normally, the lever 25 is held in an elevated position in engagement with the brace 5 at the front of the unit by a tension-type coil spring 28. The brace 5 serves as a stop to limit upward movement of the foot lever. The spring 28 holds the crosshead I9 in elevated position wherein the links I5 will be horizontally disposed and the maximum distance between the lower ends of the arm members 8 maintained.

This position of the arm members will place the hooks I2 in a position to receive the edges of an inverted mold when it is held over the table top and lowered a sufiicient distance. After the mold has been positioned on the hooks as illustrated in Fig. 2, the operator may place his foot on the treadle 21 and move the lever to the position shown in Fig. 3. This movement will cause the crosshead to move downwardly onto the guide 20 and the links I5 will assume an inclined position.

Since the links are formed of rigid material, the distance between the outer ends of opposed link members will be decreased, thus drawing the lower ends of the arm members at opposite sides of the table toward one another. This motion results in the spreading or separation of the upper ends of the arm members and since the hooks move therewith, the side wall sections of the mold will be separated. If the arm members move a sufficient distance to cause inwardly directly ribs 29 on the side wall sections of the mold to be completely withdrawn from the grooves formed thereby in the side walls of the tile, the latter member will be released and permitted to drop onto the table top.

To avoid injuring the tile, a resilient pallet 30 is placed on the upper surface of the table top. After the tile has been released, the pressure on the foot lever may be released and the operating parts of the mechanism permitted to return to original positions. At this time, the mold may be removed from the hooks I2 and the workmen may remove the tile from the table top. The foregoing operation may be repeated as many times as desired, depending, of course, upon the number of tiles being manufactured. The downward movement of the crosshead is limited by a collar 3| adjustably positioned on the lower portion of the guide 20.

It is obvious that the unit illustrated in the drawings will be effective in separating tile having grooves in the side wall from the forming molds having the inwardly directed ribs in the side walls. It is also obvious that the unit may be employed whether or not the particular form of mold illustrated is used in forming the tile.

While the invention has been illustrated in its preferred form, many minor changes may be made in the construction and relation of parts without departing from the spirit and scope of the invention as set forth in the following claims.

What is claimed is:

1. Apparatus for removing building tile from forming molds comprising a table-like support, arm members pivotally supported adjacent the sides of said support for movement about horizontally disposed axes, mold engaging hooks carried by said arms above said support, a guide carried by said support, a crosshead supported for movement on said guide, a foot lever mounted for pivotal movement on said support, and link means connecting said crosshead, said foot lever and said arm members.

2. A structure as specified in claim 1 in combination with means for yieldably resisting movement of said foot lever.

3. A structure as specified in claim 1 in combination with means for limiting the travel of said crosshead.

4. Apparatus for removing building tile from forming molds comprising a frame, a substantially rectangular table top carried by said frame, bracket members projecting laterally from said frame at the sides of said table top, arm members pivotally supported intermediately of their ends on said bracket members, mold engaging hooks carried by the upper ends of said arm members, guide means depending from said table top, a cross head movably supported on said guide means, a foot lever pivotally connected at one end to said frame, and link members pivotally connected at one end with said crosshead, the opposite ends of said link members being connected with the foot lever.

5. A structure as specified in claim 4 in combination with a coil spring connected at its ends with said foot lever and said frame.

6. Apparatus for removing building tile from forming molds comprising a vertically disposed frame having a rectangular outline when viewed in plan, a tile receiving plate mounted atthe upper end of said frame, a plurality of vertically disposed arm members pivotally supported intermediately of the ends at the sides of said frame, mold engaging hooks secured to the ends of said arm members above said tile receiving plate, a vertically extending guide disposed at the central portion of said frame, a crosshead movably supported by said guide, link means connecting the lower end portions of said arm members with said crosshead, and manually actuated means for moving said crosshead on said guide to increase the distance between said mold engaging hooks at the opposite sides of said tile receiving plate.

7. In apparatus for removing building tile from forming molds, a frame, a polygonal table top on said frame, lever means supported for pivotal movement about horizontal axes at the sides of said table top, mold engaging hooks carried by said lever means above the table top, and means for moving said lever means to vary the distances between said hooks at opposite sides of said table top.

AUGUST H. SEXTON.

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