US737761A - Engraver's tool. - Google Patents

Description

No. 737,761. PATENTED SEPT. 1, 1903. E. c. MULLER.

ENGRAVERS TOOL.

APPLICATION III-ED MAR. s. 1903.

no MODEL. 2 sums-sum 1-.

INVENTOR'.

Ew-aifl Em 11115.1. a ar ATTORN EY No. 737.761. 7 PATENTE D SEPT. l, 1903. E. G. MULLER.

ENGRAVERS TOOL.

APPLIUATION FILED MAR. 3 l 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

WITNESSES: INVENTOR'- ATTORNEY UNTTED STATES Patented September 1, 1903.

PATENT OFFICE.

ENGRAVERS TOOL.

SPECIFICATION forming part of Letters Patent No. 737,761, dated September 1, 1903.

Application filed March 3 1903.

To all], whom it may concern.-

Be it known that I, EDWARD C. MULLER, a citizen of the United States, residing at New York, in the county of New York and State of NewYork,have invented certain new and useful Improvements in Engravers Tools; 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, reference being had to the accompanying drawings, and to figures of reference marked thereon, which form part of this specification.

The present invention has reference generally to a novel construction of tool to be used for engraving purposes,whether for metal-engraving or for the engraving of printingplates of the various kinds, the engravingtool being provided with cutting edges or teeth so graduated that they can be made to engage the object to different depths, and thereby provide an engraved surface,whether for printing or otherwise, which shallhave a round or curved or a shaded appearance.

The principal object of my invention therefore is to provide a novel engravefis tool having an arrangement of cutters or cuttingteeth, the said cutters or teeth being graduated in such a manner that they will engage the object to different depths, whereby some of the lines of the engraved object or plate may be made deeper than others, all with a view of providing a simple and inexpensive tool by'means of which such lines of varying depths can be made at one time.

The tool is especially adapted for producing shaded surfaces,either concavo or convex, with the least expenditure of time and skill, for with the ordinary en graving-tool now employed the greatest care and skill are necessary, and hence the employment of skilled and expensive workmen are at the present time required on this class of work.

The invention consists, therefore, in the novel form and construction of engravers tool hereinafter described, the same being made with cutters or teeth so graduated that with one operation the object to be engraved is engaged at different depths.

The invention is clearly illustrated in the accompanying drawings, in which-- Serial No. 145,927. (No model.)

Figures 1 and 2 are a side and bottom view, respectively, of one form of engravers tool embodying the principles of this invention,

the tool being employed for engraving con-- cavo surfaces in a plate or other object. Fig. 3 is a face view of a portion of the lower or bottom surface of the form of engraving-tool represented in Figs. 1 and 2, and Fig. 4 is an edge or end view of the cutting end of the tool, both of said views being represented on an enlarged scale to clearly illustrate the graduated cutters or teeth. Figs. 5 and 6 are a side and bottom view, respectively, of another form of engravers tool embodying the principles of the present invention, but this tool being employed for engraving convex-surface representations in a plateor other body. Fig. 7 is a face View of a portion of the lower or bottom surface of the form of engravingtool represented in Figs. 5 and 6, and Fig. 8 is an edge or end View of the cutting end of this form of tool, said two views also being made on an enlarged scale to clearly illustrate their form of graduated cutters or teeth.

Similar characters of reference are employed in all of the said hereinabove-described views to indicate corresponding parts.

Referring now to Figs. 1, 2, 3, and 4 of the drawings, the tool consists, essentially, of a main body 1, having a shank 2, by means of which it is attached to any suitably-shaped handle 3. This tool is preferably of the curved configuration represented in Figs. 1 and 2, its under or bottom surface being provided with an arrangement of longitudinally-extending ridges sharpened at the free end of said body to produce cutters 4. These cutters are more clearly represented in the enlarged detail views in Figs. 3 and 4, from which it will be seen that by varying the pressure upon the tool while engraving lines of varying depths can be made during one operation in the plate or articIe to be engraved, the cutters or teeth 4 being of such graduations that their cutting edges all lie in a curved plane, forming the convex bottom of said tool. Thus it will be evident from an inspection,more especially of Fig. 4, that the cutters or teeth are so graduated that with one operation with the tool lines of difierent depths can be made in the object to be engraved, t-he engraved surface in that case having the appearance of a concavo cut or shading, and when used with a printing-plate said plate producing a printing-surface, from which may be printed a surface of a convex appearance.

In Figs. 5, 6, 7, and 8 I have illustrated a modified form of engravers tool embodying the features of this invention. In this form of tool the main body 1, the shank 2, and the handle 3 are the same as the corresponding parts represented in connection with the construction of engravers tool illustrated in Figs. 1 and 2 of the drawings, except that the bottom or under surface of the tool in this case is of the reverse curvature from that of the under surface of the tool shown in said Figs. 1 and 2. In this manner the body 1 of the tool has its lower surface made concave, as illustrated, said surface being provided with an arrangement of cutters 5.

Referring now to Figs. 7 and 8, in which views these cutters are more clearly represented on an enlarged scale, it will be seen that by varying the pressure upon the tool while engraving lines of varying depths may be made during one operation in the plate or other article to be engraved, the cutters or teeth 5 being of such graduations that their cutting edges all will lie directly within a curved plane forming the concave bottom of the said tool. It will be clearly understood from an inspection of said Fig. 8 that these cutters or teeth are so graduated that with one operation with the tool lines of different depths may be made in the object which is to be engraved, the engraved surface in this case having the appearance of a convex cut or shading and when used with a printing-plate producing a printing-surface from which may be printed a surface of concavo appearance.

From the above description of my invention it will clearly be evident that I have provided a simplyconstructed engraving-tool for cutting or engraving the surface of an object or printing-plate with lines varying in depth, so as to produce curved-surface effects, and with printing-plates an effect of shading, the various lines which are gradu= ated to different depths being made at one operation, which heretofore required many careful and tedious operations made by means of a single-pointed tool. Hence the danger heretofore existing of ruining the work is reduced to a minimum and cheaper work with quick results is obtained.

Of course it will be understood that the number of cutters and the degree and shape of curvature may be varied at will without departing from the scope of my present invention. Hence I do not limit my invention to the exact arrangements and combinations of the parts as described in the accompanying specification and as illustrated in the accompanying drawings, nor do I confine myself to the exact details of the construction of the tool.

Having thus described my invention, what I claim is 1. A hand shading-tool, comprising, a main body having a lower surface of a curved crosssection, a shank at one end of said body, and a handle attached to said shank, and a multiplicity of ridges extending longitudinally along the lower curved surface of said body, the free end of said body being cut to form cutters, substantially as and for the purposes set forth.

2. A hand shading-tool, comprising,a main body having a lower surface of a convex crosssection, a shank at one end of said body, and a handle attached to said shank, and a multiplicity of ridges extending longitudinally along the lower convex surface of said body, the free end of said body being cut to form cutters, substantially as and for the purposes set forth.

In'testimony that I claim the invention set forth above I have hereunto set my hand this 26th day of February, 1903.

EDWARD O. MULLER.

Witnesses:

FREDK. C. FBAENTZEL, GEO. D. RICHARDS.

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