US792781A - Die. - Google Patents

Description

No. 792,781. PATENTED JUNE 20, 1905.

G. W. LENTZ.

DIE.

APPLICATION FILED NOV.14,1904.

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. 1 By George W- UNITED STATES Patented .Iune 20, 1905.

PATENT OFFICE.

EMBOSSING MACHINE COMPANY, OF INDIANAPOLIS,

CORPORATION OF INDIANA.

INDIANA, A

DIE.

SPECIFICATION forming part of Letters Patent No. 792,781, dated June 20, 1905.

Application filed November 14, 1904. $eria1No. 232,688.

T 0 (tiltwhmn it nwly concern.-

Be it known that I, GEORGE W. LENTZ,aeitizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Dies, of which the following is a specification.

In the production of embossed woodwork it has heretofore been found impractical to closely imitate carved effects because of the impossibility from a practical standpoint of producing deep depressions in the surface. This failure has been due to the fact that when an embossing-die was provided with extremely high cutting-points these points when sinking into the wood would cause the wood to split longitudinally.

The object of my present invention-is to produce means, either formed integrally with or operating automatically in conjunction with a cutting and embossing die, by which the material operated upon will be automatically transversely compressed and prevented from splittinglongitudinally during the time of operation.

The. accompanying drawings illustrate my invention.

Figure 1 is a perspective view of a die constructed in accordance with my invention. Fig. 2 is a transverse section of the die, a piece of material to be embossed, and the upper and lower beds of an embossing-maehine.

The main body 10 of the die is provided on its work-face with any desired embossing-pattern 11 having high cutting portions, and I find that the difference in level between the highest and the lowest point of the die may be as much as one-half inch and under some circumstances even more. Flanking the pattern-surface 11 along the entire length of each side is an abutment 12, the insides 13 of which are preferably tapered slightly inward. The abutment 12 may be interrupted at places without departing from my invention. In

practice I find it most convenient to make the abutments 12 integral with the body 10; but this is not necessary, as they may as well be made separate from the die and attached to the edges thereof or be attached to the embossing-bed 14 immediately adjacent the sides of the die.

In operation the die 10 together with the abutments 12 are arranged in conjunction with asupporting-table 1 1, preferably of such kind as to permit the heating of the die in the usual well-known manner. The material 15 to be embossed is of a width slightly greater than the distance between the abutments 12 at a point just beyond the highest cuttingpoints of the surface 11, so that when the material is forced into engagement with the pattern-surface of the die the said material will be clamped between the abutments 12, and thus held against splitting.

I have found by actual practice that by the use of an ordinary die having very high cutting-points the proportion of loss is sometimes as great as forty per cent. of the total number of pieces embossed, while by the use of my die repeated trials have failed to cause the splitting of a single piece.

I claim as my invention- 1. A die carrying on its face an ornamenting-surface, said ornamentingsurfaoe being flanked at opposite sides with abutments which project beyond the highest point of the ornamenting-surface and their adjacent faces convergent toward the lower portions of the ornamenting-surface.

2. A die carrying on its face an ornamenting-surface, said ornamenting-surface being flanked at opposite sides with abutments which project beyond the highest point of the ornamenting-surface and the adjacent faces of which taper inwardly.

3. A die carrying on its face an ornamenting-surface having high cutting portions, said ornamenting-surface being flanked at opposite sides with abutments the adjacent faces of In witness whereof I have hereunto set my which project beyond the highest cutting hand and seal, at Indianapolis, Indiana, this points and which taper inwardly, whereby ma- 9th day of November, A. D. 1904.

terial to be ornamented is engaged between GrEORGE W. LENTZ. [L. s'.] 5 said abutments and transversely compressed Witnesses:

thereby during the entrance of the ornament- ARTHUR M. H001),

ing-surface into the surface of the material. J AMES A. WALSH.

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