US469047A

US469047A - Machine foe engeaving in eelievo

Info

Publication number: US469047A
Authority: US
Publication date: 1892-02-16
Anticipated expiration: 1909-02-16

Description

(NoModeL) 3 Sheets-Sheet 1.,

. P. OTTO.

MACHINE FOR ENGRAgVING IN RELIEVO- N0. 469,047. OP. Patented Feb. 16, 1892.

1 n A e g l 3 SheetsSheet 2.

Patented- Feb. 16. 1892.-

P. OTTO. MACHINE FOR ENGRAVING IN R ELIEV O (No Model.)

(No Model.) 3 Sheetls-Sheet 3..

PQOTTO. a

MACHINE FOR ENGRAVING IN RELIEVO.

Patented Feb., 16, 1892.

UNITED STATES PATENT OFFICE. I

PAUL OTTO, OF BERLIN, GERMANY.

MACHINE FOR E NGRAVING IN RILIEVO.

SPECIFICATION forming part of Letters Patent No. 469,047, dated February 16, 1892.

. Application filed November 30, 1891. Serial No. 413,465. (No model.)

To all whom, it may concern.-

Be it known that I, PAUL OTTO, a subject of the Emperor of Germany, residing at the city of Berlin, in the Kingdom of Prussia, Germany, have invented a certain new and use ful Improvement in Machines for Engraving or Carving in Rilievo, of which the following claimed.

The characteristic features of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, and in which- Figure 1 is a side elevation of the upper or operative portion of a machine for engraving or carving in rilievo embodying features of my invention. Fig.2 is a top or plan View of the same. Fig. 3 is an elevation of the lefthand end of the machine illustrated in Fig. 1, and Fig. 4 is a similar view of the righthand end of the machine.

In the drawings, A is a bed-plate provided upon its upper surface with longitudinally- V ranging ways and adapted to be supported by a table or other frame-work. (Not shown.)

D is a standard mounted upon the Ways of the bed-plate A and adapted to be clamped thereto. The standard B is provided with vertically-ranging ways, in which a tool-carrier C is afforded a range of end-play. This,

carrier 0 is provided with sidewise projecting arms for a purpose to be presently de scribed.

D is a tool-stock spindle rotatably mounted in the respective arms of the carrier 0 and adapted to be rotated by means of a drivingpulley D or in any other preferred manner.

E is a graver or cutter connected with the lower extremity of the tool-stock spindle.

F is a slide-rest adapted to carry the material or blank to be carved or engraved and afforded a free range of motion in one direction in a horizontal plane.

G is a support fitted to the ways of the bedplate A and provided upon its under side with a clamping device for retaining it to place.

His a pantograph of the usual construction, mounted upon the support G and havin g one of its operative extremities connected with the rest F by a bolt or pin f and having its other extremity provided with a small socket J.

K is a non-rotatable copying or pattern bit afforded a range of end-play in the socket J and having a rounded or hemispherical upper extremity and a comically-shaped point or lower extremity corresponding with the angle of the cutting-edge of the graver or cutter E.

L is a carrier adapted to support the pattern and adjustably connected with the bedplate A by'means of suit-able dovetail ways and clamping devices, as shown in Fig. 1.

M is a pillar adj ustably connected with the ways of the bed-plate by means of suitable clamping devices. I

N and N are levers pivotally connected at or near their respective centers to the pillar M. The respective left-hand extremities of these levers N and N are pivotally connected with a vertical stem 0, provided at the lower extremity with a horizontal plate Q. The right-hand extremities of these levers are pivotally connected with a bar R, carrying a counter-weight S, which counterbalances the weight of the plate Q. The object of the parallel motion comprising the levers N and N and their accessories is to afford the stem 0 and plate Q a range of play in a vertical direction without being rotated or shifted out of the vertical and horizontal positions-that is to say, in order to maintain the stem and plate parallel with themselves inall positions of elevation and depression.

T is a rail projecting fromthe standard B and provided with a collar'U, which may be slid toward the right or left and then clamped to place in order to permit of the required adjustment of the machine.

V is a lever pivotally connected at or near the center thereof with the collar U. This lever V is connected at c. with the carrier 0 by means of alink y. The right-hand extremity of the leverVis provided with an adjustable pin W, adapted to contact with a cap P, mounted on the upper extremity of the bar 0, and the left-hand extremity of the lever V is provided with a counter-weight S for counterbalancing the weight of the lever and its accessories.

O is a spiral spring interposed between the standard B and carrier 0 in order to shift the latter normally upward and thus maintain the pin W in contact with the cap L and the plate Q in contact with the rounded extremity of the copying-bit K.

The mode of operation of the hereinabovedescribed machine is as follows: A blank to be carved or engraved is attached to the slide-rest F,and a pattern or model ismounted on the carrier L, and the latter is clamped to place in the ways of the table A. The copying-bit K is then caused, manually, to traverse every portion of the embossed and figured parts of the pattern or model and the cutter or graver is rapidly rotated. The movements of the copying-bit K in a horizontal plane are accurately transferred to the slide-rest F by means of the pantograph H, and the movements of the copying-bit K in a vertical direction are similarly transmitted to the graver or cutter E through the instrumentality of the plate Q,

spindle O, lever V,and carrier 0. The result of these two operations is to cause the rotating graver or cutter E to carve or engrave upon the blank a fac-simileof the embossed and figured portions of the pattern or model. In the drawings the machine is illustrated as adapted to reduce the facsimile of the model or pattern to one-fourth size; but the size of the fac-simile is immaterial and may be increased or diminished by means of the pantograph H and sliding collar U, as will be readily understood by reference to Fig. 1.

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A machine for engraving in rilievo,comprising a blank-supporting slide-rest movable in one plane, a rotating cutter or graver afforded a range of play in a direction perpendicular to said plane, amodel or pattern, a copying-bit adapted .to traverse the surface of the. model or pattern, a pantograph connected with said copying-bit and slide-rest, and a parallel-motion mechanism connected with said copying-bit and cutter or graver, substantially as and for the purposes set forth.

2. A machine for engraving in rilievo, comprising a blank-supporting slide-rest movable in one plane, a rotating cutter or graver afforded a range of play transversely of the slide-rest, a model or pattern, means for supporting the'model or pattern, a pantograph connected with said slide-rest and provided with a socket, a copying-bit afforded a range of end-play in said socket, a horizontal plate contacting with said copying-bit and afforded a range of vertical movement, and a pivotal lever connected with said plate and cutter'or graver, substantially as and for the purposes set forth.

3. A machine for engraving in rilievo, comprising a blank-supporting slide-rest, a rotating cutter or graver movable transversely of the slide-rest, a model or pattern, means for supporting the model or pattern, a pantograph connected with said slide-rest and provided with a socket, a copying-bit afforded a range of end-play in said socket, a horizontal plate contacting with said copying-bit and provided with a spindle, a counterbalanced parallel-motion mechanism carrying said spindle, and a pivotal lever connected with said spindle and cutter or graver, substantially as and for the purposes set forth. 4

4. A machine for engraving in rilievo, C0111- prisinga blank-supporting slide-rest, a pantograph connected with said slide-rest and provided with a copying-bit, a carrier working transversely of the slide-rest, a graver orcutter journaled in said carrier, a pivotal lever connected with said carrier, and means interposed between said lever and copying-bit and adapted to transmit the vertical movements of the bit to the'carrier, substantially as and for the purposes set forth.

5. A machine for engraving in rilievo, comprising a copying-bit K, a sliding rest F for supporting a blank, a graver or cutter E, a pantograph ll, interposed between the cutter and slide-rest, a plate Q, and a system of levers N, O, W, Y, and U, interposed between the bit and cutter or graver, substantially as and for the purposes set forth.

In witness whereof I have hereunto set my hand in presence of two witnesses.

PAUL OTTO. \Vitnesses:

W. H. EDWARDs, W. HAUPT.