US652892A - Engraving-machine. - Google Patents

Description

No. 652,892. Patented July 3, |900. WIS. EATON.

4ENRAVING MACHINE.

(Applcatio'n led Mar. 1, 1900.)

2 Sheets-Sheet l.

QNO Model.)

No. 652,892.` Patented luly 3, |900. W. SLEATON.

ENGBAVING MACHINE.

(Application led Mar. l, 1900.)

2 sheets-sheet 2.

(No M odel.)

FIG'. 3.

Il Il.v

1' E Dams Pn'zns ca. Hom-uma., wnsmnuvou. um

UNITED -STATES Fries.

PATENT WILLIAM S. EATON, OF SAOr HARBOR,l NEW YORK, ASSIGNOR TO THE EATON da GLOVER COMPANY, OF NEW YORK, N. Y.

NGRAVlvNG-MACHINE.

SPECIFICATION for-ming part of Letters Patent No. 652,892, dated July 8, 1900.

Application filed March 1, 1900. Serial No. 6,903. (No model.)

To all whom t rc1/ay concer-7e:-

Be it known that VI, WILLIAM S. EATON, a citizen of the United States, and, a resident of Sag Harbor, SuffolkV county, State of N ewA York, have invented certain new and useful Improvements in Engraving-Machines, of which the following is a specification.

This invention relates to an engraving-ma chine so constructed that an infinite variety of engravings may be reproduced from the same pattermwhich though possessing the same characteristics as the pattern differ therefrom by being expanded or contracted laterally more or less to any desired extent. Thus the samev pattern may be utilized to produce different styles of engravings all similar to the original and bearing either the same or different relative proportions.

In the accompanying drawings, Figure l is a front elevation of myim proved engravingmachine; Fig. '2, a side elevation thereof; Fig. 3, a section on line 3,3, Fig. 2;V Fig. 4, a cross-section on line 4 4.-, Fig.y 3. Figs. 5, 6, and 7 represent engravings produced from the same pattern-plate under different adj ustments of the machine.

The letter d represents the frame of the machine, and b the pattern-plate the design of which is to be reproduced.

c is the tracer, secured by an arm d to a lever d, Which is so suspended at d2 from frame a that it may swing freely in any direction, all as usual in this class of machines. To the lever d is clamped a vertically-adjustable slide e, which is'held in position by means of a bolt e', that extends through a slot of lever d and is engaged by a nut e2. To the slide e is pivoted at f a counterbalanced yoke f, provided with a dovetail groove f2, that engages the vertical shank of an elbow g, having scale g and serving as the support for the toolholder. This support is vertically adjustable Within the yoke and is clamped at any desired elevation by a set-screw g2. The horizontal shank of support g forms at its forward end the bearing for a tool-holder h, pivoted to the bar ath h', the pivots it extending at right angles to the pivots f. The engravingtool t', secured to the tool-holder h, is arranged above a table j, upon which the Work-piece k to be engraved is secured.

The table j may be set at different inclinations and is pivoted to a slide-rest l, which is supported upon a verticallyadjustable bracket m.

The tool-holder may be raised olf'tlie work by a pivoted cross-bar n and may be pressed upon the Work by a finger-ring 0,

' The operation is as follows: The slide e is set at such a height along a scale d3 of lever d that the design on the seal or other workpiece 7c Will bear the desired proportion to the design on the pattern-plate l). If now the support g is so set in yoke f that the pivots h of tool-holder 7L are in the same horizontal plane as the pivots f' of yoke f, the figure engraved on the work-piece 7a will be similar to that on the pattern-plate b, differing therefrom only in magnitude. Thus a circle on plate b will form a circle on plate 7c, Fig. 6. If the support gis so setin yokef that the pivots h are placed in a higher horizontal plane than the pivots f', the ligure engraved will be laterally contracted at a ratio corresponding to the elevation ofthe pivots h above pivots f. This results from the fact that the lateralswing of the tool-holder is diminished, while its backward-and-for- Ward motion remains the same. Thus a circle on the plate h will form a narrow ellipse on plate 7c, as shown in Fig. 5. If the support gis so set in yoke f that the pivots h are placed lower than the pivots f', the figure engraved Will be laterally expanded, because the lateral swing of the tool-holder is increased.

rThus a circle on plate b Will form a wide ellipse on plate 7c, as shown in Fig. 7.

It Will be seen that by my invention I may thus contract or expand laterally any design formed on the pattern-plate, so that with the same 'plate an infinite variety of different engravings may be produced which are all founded upon but differ in relative proportions from the original plate.

Among one of the many uses to which the invention may be put may be mentioned that of forming different styles of lettering from the same parent type, though the invention is of course equally applicable toallother kinds of engravings. f Y

In an engraving-machine, the combination of a tracer with a Vertical freely-swinging leand State of New York, .this 28th dafyofFeb- Ver, a yoke pivoted thereto, a support vertmary, 1900. cally adjustable in said yoke, and a too holderpivoted to the support, the pivots of the WILLAM s EATON' 5 tool-holder extending at right angles to the Witnesses:

pivots of the yoke, substantially as specified. TOM SELLORS,

Signed by me at New York city, county FRANK B. GLOVER.

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