US1612967A - Engraving apparatus - Google Patents

Description

Jan. 4, 1927. 1,612,967

R. T. DIEGE S ENGRAV'ING APPARATUS Filed Jan. '7. 1924 Fig.1.

Fig.2.

Fig.3.

Fig. 1

Fig. 5

IN VENTOR Rober'fI Dieqes I ATTORNEY Patented Jan. 4, 1927.

UNITED STATES tense? PATENT orricsx.

ROBERT T. DIEGES, 01'" NEW' YORK, N. 1., ASSZGNOR T0 DEFOEEST RADIO TELEPHONE n" Lilli JERSEY, A. OURPGRATIO'N OF DELAWARE:

ENGRAVIHG APEARATUS.

Application filed January 7, 1924. Serial No. 684,799.

This invention relates to engraving apparatus and more'particularly to apparatus 0 that class wherein the engraving is accomplished by means of a punch or die.

The objects of the invention are to provide an apparatus which will accomplish its purpose with facility and obtain acceptable results; to obtain a clean cut impression; to prevent the material becoming cracked or irregular adjacent the cut; to enable the engraving to be carried out with. considerable rapidit to provide for exactly positioning the engraving die with respect to the article being engraved; to maintain the dies in proper relative position and out of the way; to secure simplicity of construction and operation, and. to obtain other advantages and results as may be brought out in the following{ description.

eferring to the accompanying drawing in which like numerals of reference indicate similar parts throughout the several views;

Figure 1 is a plan of an engraving apparatus constructed in accordance with my invention;

Figure 2 is an elevation of the same iron. the side which may be termed the front;

Figure 3 is a transverse sectional view on line 3 3 of Figure 2 showing a panel to be engraved partially inserted;

Figure 4: is a similar sectional view showingrthe panel'in position and the die depressed by means of a press; and

Figure 5 is a face view of a die as employed in connection with my invention.

In the specific embodiment of the invention illustrated in said drawing, reference I numeral 1 indicates a die-carrier which is in the nature of a plate and is supported in parallel and spaced relation to a'similar base or bed plate 2. As shown in the drawing, I provide supports 3 at the ends of the said die-carrier and base for rigidly maintaining the same in position relative to each other. It is to be noted that the die-carrier and bed plate are space-cl far enough apart to permit the convenient insertion of the article which is to be engraved. The present apparatus as shown is intended for engraving the various characters and wording upon the panels used in connection with radio apparatus. In Figures 3 and l 1 have shown such a panel 4 in connection with the apparatus the panel only being partially inserted in Figure 3. The apparatus is preferably f made of proper size to accommodate the particular size panel. which it is intended to engrave that is, the distance between the side or upright supports 3, 3 is preferably equal to the length of the panel so when inserting the panel from the front it will beheld by the said supports 3 from longitudinal move.- ment. Suitable stops 5 are provided near the rear edge of the bed plate against which the rear edge of the panel may engage when inserted in the apparatus. At.

the front of the bed plate I provide an ear 6 through which operates a thumb screw 7 the inner end of which can be brought into engagement with the front edge of the panel for pressing the panel against the stops 5 and thus hold the panel in exact position while being operated upon. I

.Slidably mounted in the die-carrier l are a plurality of dies 8. These dies are positioned at the proper place for engraving the desired matter upon the panel, when the dies are depressed. In the present showing I have merely represented three dies in a row but it is to be understood that the number and position of the dies may be varied to suit the needs of any particular panel without departing from the invention. Each die is preferably movable toward and away from the panel independently of the other dies, so that any die may beoperated without operating the rest, if so desired.

As shown in the drawings the dies preferably include a shank 9 and an enlarged head 10 the end of which constitutes the die surface and is flat except for the particular wording or device which is to be engraved in the panel. Such wording or device, as indicated by reference numeral 11, protrudes from the flat surface 12 of the die only a distance equal to the depth which it is desired to impress in the panel. As a result of this construction when the die is forced downward upon the panel the requisite impression is made in the panel and then the fiat surface 12 of the die engages the panel, not only preventing further depression of the die but preventing the panel from being burred,

roughened or cracked adjacent the imprestelligible or of such a nature that the impression could not be filled with white lead or other substance, as is usual in the art.

It is to be understood that the head of the die is positioned beneath the die-carrier 1 facing toward the bed plate 2 with its shank 9 extending upwardly through a suitable hole in the die-carrier within which said shank is vertically slidable. The shank 9 is provided with a vertical keyway 13 and a projection or key 14 is provided in the hole through the die-carrier so as to prevent rotation of the die, but permit slidable movement thereof. A collar 14 is secured, as by screws 15, to the top of the shank and a spring 16 surrounds the shank beneath the collar for maintaining the die normally in an upward position. It is to be understood that in the use of my apparatus that the dies may be depressed separately or in groups or all together and if they are depressed in groups that overlap, it to be noted. that no harm is done by depressing the one die twice because of the large flat surface of the die which will not permit the cutting portion of the die to go further the second time than it went the first time. Likewise, depressing a die twice will not cause the cut to be made in a different place because the panel is held fixed relative to the path of movement of the die at all times. I have shown diagrammatically a press hammer 17 in Figure i, forcing a single die downwardly against the panel.

In operation, a panel 4 to be engraved is inserted in place, thumb screw 7 is tightened so as to hold the panel exactly where placed, and then the dies are operated. Operation or depression of the dies causes the lettering or impression portion to engage and sink By way of illustration into the panel, after which the flatportion 12 of the die comes into engagement with the panel and flattens out any burrs, projections or irregularities on the face of the panel in and around the lettering or impression which resulted from the displacement of materials caused by the impression portion. This flattening operation is carried out by the die while the impression portion thereof is in the cut or impression of the panel so the impression remains clear and the material is compressed around the impression making it flat and smooth without any detrimental effect on the impression. It is fur-- ther to be notec that the peripheral edge of the flat portion or surface 12 of the die is rounded off so that the edge will not cut into the material and show a ridge on the panel. This rounding may be on either a small or large radius of curvature as found most desirable, although I have shown it with a relatively small one.

Obviously detail modifications and changes may be made in the construction and operation of my improved engraving apparatus, and I do not wish to be understood as limiting myself to the exact structure shown except as set forth in the following claim when construed in the light of the prior art.

Having thus described my invention, 1 claim:

An engraving apparatus comprising a diecarrier and base maintained in fixed relation to each other, a stop at one edge of the base,

and adjustable means at the other edge of the base for pressing the article to be en-- graved against the stop.

In witness whereof, I hereunto fix my hand and seal this 2nd day of January, 1923.

- ROBERT T. DIEGES.

Images