US1421427A - Etching or like machine - Google Patents

Description

W. S. EATON.

ETCHING 0R LIKE MACHINE.

APPLICATION FILED JULY 1. 1921.

1 42 1,427, v Patehted July 4, 1922. I 2 SHEETS-SHEET 1 W. S. EATON. 'v

ETCHING 0R LIKE MACHINE.

APPLICATION FILED JuLY1, 1921.

1,42 1,427. v Patented July 4, 1922 I j@g 2 SHEETS-SHEET 2.

air

WILLIAM S. EATON, OF SAG HARBOR, NEW YORK.

ETVCI-IING OR- LIKE MACHINE.

Specification of Letters Iatent.

PatentedJuly, 4,1922.

Application filed'J'uly 1, .1921. Serial No. 481,823.

To all whom, it may concern:

Be it known that l, \i iLLrarr S. Enron, a citizen of the United States, residingat Sag Harbor, in the county ot'f'Sutlolk and State of'ilew York, have invented certain new and useful Improvements in Etching machine may be controlled to create a circular design embodying" letters and it desired suitable marginal lines or ornamentation.

In the art to which my inventionrelates, there are two distinct types of machines; one in which material of a printing surface is removed by means of a graver or routing tool so that the printing plate when removed from the machine with the possible exception of hand retouching, is ready for use; and one in which a dry point adapt'ed'to prepare a plate for acid etching is employed.

The first type is generally known in the trade as an engraving; machine and the latter type as an etching machine.

In both types of machines it. is possible to employ a structure wherein the work support is stationary and the work point or tool carrier is universally movable on a single plane under the control of a pendulous. stylus point carrying, transmitterarm' which is adapted to be moved in accordance wi h a pattern upon an immovable pattern support: or a structure may be employed wherein the work support is movable in re.- lation to the work point or tool.

In etching machines the practice is to move the tool in relation to the work support, while in engraving machines the other practice is generally followed, particularly when a routing head is used.

Such machines are particularly adapted ous adjustment securinga variable relation the work plate and the work point or tool, and of the pattern and the tracing stylus carried by the transmitter arm. These adjustments would necessaril'y have to be entirely independent, one or the other, precluding possibility of accuracy in what is necessarily precision work.

With the above conditions in mind,I have produced an etching or like" machine embodying therein in combination with other working parts of the machine.- an attachment whereby letters, or (and) numerals, may be reproduced upon the work plate with accurate spacing in atrue circular form. This attachment embodies therein a rotatable pattern plate so asto permit the completionof the work plate through a proper actuation of the attachment without disturbing any of the other adjustments'in a machine.

Said attachment so constructed that a straight line border or a line background design maybe developed about the letters and numerals, the construction being such as to permit variation of'the characterot thebackground design, if desired;

Since, while the circular d'esignis being of the rotary pattern plate, requiringin the attachment the provision of means upon which the entire circular arrangement 0t" letters or (and) numerals may be laid out and properly centered,

In circular designs, it is usually desired to have all of the letters read-able from the same position, which result is secured by making the pattern plate reversible and havingupon one side thereof letters of the alphabet and the digits with their tops toward the periphery of the plate and upon the other side thereof. similar letters and digits with t ieir tops toward'the axis of rotation of the plate.

he invention. consists primarily in an etchingor like machine embodying therein a work platesupport, a carrier for a work point or tool, said support and said carrier being capable of relative universal movement upon a single plane, a transmitter arm adapted to cause-such relative movement; a-

tracing stylus carried thereby, a pattern such other novel features of construction and j the plate.

depressed letters, digits or other characters circularly arranged thereon about a common center, and a layout sheet carried by said base and projecting beyond the edge of said plate, whereby succeedingmovements of saidrotary platenecessary to secure the completed design, may be indicated; and in combination of parts as are hereinafter set forth and descr1bed,-and more particularly pointed out in the claims hereto appended.

Referring to the drawings,

Fig. 1 'is a front elevation of a portion of an etching machine embodying my invention;

Fig. 2 is a plan view, upon a larger scale, of the circular pattern attachment;

Fig. 3 is a fragmentary view of the reverse side of the rotary plate of said at tachment; and

Fig. 1- is a view of a fragmentary portion of a plate which may be used for developing a background. for the lettering on the plate alone or in conjunction with other mechaf nisms of the attachment.

Like numerals refer to like parts throughout the several views.

In the accompanying drawings, I have illustrated my invention as applied to an etching machine of a type heretofore patented to me, in which while a machine is in op eration, the work point carrier is movable in relation to the support for the work plate, and said supportis adjustable to secure the proper line spacing in, and the proper'positioning of the design being produced upon I will, therefore, merely describe the broad essential characteristics of this machine and omit all detailed description thereof. a i

In the drawings, 10 indicates the work plate support which is carried by a column 11, and remains stationary when .once set to bring a design in the proper position on 1a plate: The work plate support is adjustable along lines at right angles to each. other in any desired manner, this being an old and well known expedient in this art to permit word and line spacing in, and the proper positioning of, the design upon a plate. The head 12 of said column is provided with a plurality of bearing cups 13 upon which a carriage 14 is mounted by means of bearing balls 15, thus permitting universal movement of said carriage upon'a single plane. Supported by said carriage and movable there with is a work' point and its support 16.

1 Connected to the carriage 141- by means of a compass mount or' other universal joint,

indicated in dotted lines, is a transmitter arm 17 having slidably mounted therein a stylus point 18. Said transmitter arm 17 intermediate the ends thereof is pivotally mounted in a ring 19 which in turn is pivotally mounted in the bracket 20, said bracket being adjustable vertically of the column 11 so as to permit variation in the scale of re-- production.

The pattern table is shown at 21.

All of the characteristics above referred to considered specifically, form no part of my present invention, being old and well known 1n the art, and being shown merely by way of illustrating one type of machine duced upon a work plate carried by the sup-- 1 port 10, in a true circle and j in the desired position upon said plate.

This attachment comprises a rigid base 22 which may be immovably secured to the pattern table 21 in any desired manner as by means of diametrically opposite studs 23 carried on the under side thereof and adapted to enter sockets in said table. Rotatably mounted. upon said base by means of a pivot screw 24, is a circular pattern plate 25, said plate being locked in any adjusted position by means of the shouldered nut 26 mounted upon said screw.

Between the plate 25 and the base 22 is a layout disk 27 which is also rotatable about the pivot screw 24, this disk 27 preferably being made of celluloid so as to permit its repeated use, altl'iough, any other desired material may be employed, the use of celluloid being merely an economy in the operation of the machine. i

The base 22 is provided with a cutout por tion indicated at 28 to facilitate access to the disk 27 for the purpose of adjusting it about the pivot 24 in centering the design laid out about the edge of this disk; The

disk 27 is of greater diameter than the said letters and digits.

The letters and digits are indicated at 31 upon one side of said plate and at 32 upon the other side thereof, it being. noted that the characters 31' have the tops thereof directed toward the axis of rotation of the plate, while the characters 32 have the tops thereor directed toward the periphery thereof, a condition which permits the use of one side'of the plate in reproducing these characters toward the bottom of the circular de Sign, and the other portion thereof for reproducing the characters toward the top of the design, which will result in all the characters being readable from the same position.

In addition to guiding the stylus point when reproducing different selected letters, digits, or other characters, I utilize said plate 25 in laying out the completed design upon the disk 27, said plate 25 being provided with marginal gauge lines indicated at 33, for justifying the letters of the design in laying out the design upon said disk 27.

The plate 25 being removable in relation to the base 22, said plate may not only be reversed to permit the utilization of the characters 31 or the characters 32 as desired, but plates having different styles of characters may be selectively used upon the base. Changes of size in the reproduced designs may be secured by adjustment of the. leverage at which the transmitter arm 17 is operative upon the carriage 14.

By forming the characters: as a series of closely juxtaposed lines, I am enabled to produce either outline or solid characters in the reproduction, since the width of cut of an ordinary routing tool or graver is greater than the width of said lines and the spaces between same, and when making etched plates, the acid will undercut the portions of the plate beneath the resist between the lines made by the dry point. By using the outer lines only, outline letters may be formed in the reproduction. This is an old and well known expedient in this art and in the related arts of engraving and etching, antedating the use of machines otthe general character to which my invention relates.

IVhile with the use of the plate 25, the letters and characters used on a plate may be circularly arranged, it may be desired to provide the design with an outline border upon opposite sides of the lettering, or a background for the lettering, or other portions of the design. To simplify the operation of the machine, I provide the attachment with means having a. fixed relation to the plate 25 by which such border or background lines may be accurately positioned with relation to the lettering.

Preferably, as shown in Figs. 1 and 2 of the drawings, I provide the base: 22 with a. mechanism which may be utilized for reproducing either border lines or a. background design, said mechanism being capable of adjustment to vary the character of either of said types of lines.

This mechanism comprises a rotatable arm 34 pivotally mounted below the shoulder upon the nut 26 so as to permit the free rotation of the arm under all conditions. Slidably mounted upon said arm 34 is a carriage 35 having parallel lines of depressions 363 7 thereon extending substantially radially of the pivot 24. The depressions in one line 37 are spaced a greater distance apart than those in the other line 36. The carriage 35 is held. upon the. arm 34 in any desired manner as by means 0t the tongue 38 which is slidably mounted in the slot 39 and held in this relation by means of an impact plate 40 secured thereto on the under side of said arm 34.

The carriage 35 is normally forced toward the pivot 24 by means of the spring 41. R0- tatably mounted upon the pivot 24 is a plate 42 having an undulatory or convolute edge adapted to be engaged by a reduced bearing end upon the plate 40. The arm 34 has a socket therein adapted to receive a pin 43 in a position where it will hold the impact plate 40 out of engagement with the perimeter of the plate 42. When this pin is in position, the arm 34 and carriage 35 may be rotated about the pivot screw 24 so as to describe a true circle upon the work plate. It the pin" 43 be removed, the carriage 35 under the-control of the spring 41, the plate 42 and the impact plate 40 will develop an undulatory line. The spacing of the depressions 36 and 37 will permit any desired radial lo cation of either the circular or the undula tory line.

When the pin 43 is removed, the, character of the reproduction will be the same as that which will be secured by a circular plate having thereon a sequence of undulatory lines 45 as shown inFig. 4 of the drawings. Consequently, it is apparent that, if'desired, such a plate may be used for producing undulatory background designs, or border line, in lieu of the plate 42.

If it be desired to weave the lines in making an undulatory design, this effect may be secured by shifting the plate 42 about the pivot 24 after each succeeding line is made, or if the plate 44 be used in lieu of said plate 42, by shifting this plate about the pivot 24.

By using plates 42 having different contours, the general character of the undula tory line design may be varied, the removability of the plates 42 permitting substitution of one plate for another.

The operation of the herein described device is substantially as follows The base 22 is mounted upon the work table 21 by means of the pins 23 so as to hold it in a fixed relation to said table. The 125 lettering is then laid out upon thelayout disk 27 by bringing the letter upon the plate 25 corresponding with the first letter of the copy. to the left of the operator, and indicating the letter upon said disk 27 and 130 also the location of the lines 33 upon opposite sides o'l. said letter. The plate 25 is then repeately turned to bring succeeding letters adjacent the letter previously indicated upon-the disk 27, theline 33 to the left of each letter upon said plate 25 being brought into register with the previously formed space lines to the right of the layout upon the disk 27. t In this way the complete wording will appear upon the disk 27 with the letters and words properl spaced. During this operation, said disk will be held stationary by the clamp nut 30. The portion of the copy which is to appear at the top of the circular design will then be centered in relation to the plate 25 in a position toward the operator or toward the bottom of the layout sheet, and the portion of the copy to appear at-the bottom of the design, ac"

curately centered with relation to the top of the layout sheet as indicated in Fig. 2 of the drawings. It is possible to lay out different portions ofthe design at different times during the progress of the work. The location of different portions of the design is determined by their adjustment with re lation to the base 22 without regard to their location upon the disk 27.

WVhen the letters have been laid out properly on the disk 27 and said disk has been accurately centered, the clamp nut 30 is set and the nut 26 is loosened so as to permit the plate 25 to be rotated until some letter thereon is brought into register with a corresponding letter upon the layout disk, whereupon the nut 26 is set to hold the plate 25 against movement, while the stylus 18 is used to trace this letter upon the plate 25.

If the portion of the design to be reproduced upon the work plate by the point 16 is to appear at the bottom of the design, the

disk 27 must be so positioned as to bring the letters or the characters to be reproduced, at the top thereof as shown in Fig. 2, and the depressed letters 31 must be used, the letters or other characters appearing upside down to the operator as he is working upon same. This condition is due to the fact that in an etching. or like machine, wherein the pendulous transmitter arm is supported by a universal joint intermediate its ends, all of the conditions in the reproduction are reversed, the left of the pattern becoming the right in the reproduction, the right becoming the left, the top becoming the bottom and the bottom becoming the to 1in the embodiment of the invention shown in the drawings, when the characters upon the pattern to be reproduced are at the top as shown in Fig. 2, they will appear at the bottom ofthe design in the reproduction, and the letter N while it appears to the extreme left upon the disk 27 will appear at the extreme right upon the reproduction,

and the other letters will appear in the reverse of their sequential relation upon said disk 27. In the reproduction of the characters 31, they will read from the bottom of the circular design.

When it is desired to reproduce the letters upon the upper portion of the circular design, the plate 25 is reversed and is turned to the right or left, as desired, until letters, digits or other characters 32 thereon corre sponding with the various letters on the layoutdisk 27 have been successively brought into the desired relation, each letter being traced while it is associated with the corresponding letter upon the layout disk. Since the letters uponwhich the operator is working appear upside down to him at the bottom of the layout disk, they will appear reversed upon the reproduction so that they will read from the same position as the letters upon the bottom of the design.

In the reproduction, the letters will appear backward as in. ordinary printing types, the machine merelyinverting the letters in changing their position upon the plate, but otherwise absolutely reproducing the letter as upon the pattern.

Of course, it it is not desired to have all oi": the work read from the same position. upon the reproduction, the charactr-n's upon either side of the plate 25 may be used for reproducing the entire layout upon the disk 27.

When used in an etchingmachine of the character shown in the drawings, the use of all of the lines of each letter or numeral will result in a solid letter, and the use of the outer lines only will result in an outline letter, as described heretofore.

V it be desired to provide a circular border, ora background made of concentric circles, the stylus 18 carried by the transmitter arm 17 is inserted in some one of the depressed points in the carriage 35 and the arm 34% in this carriage rotated about the pivot 24, the result being thedescribing of a single narrow, true circular line without or within the letters in the reprodlliotion, and it it be desired to widen this line. this operation is repeated with, the next depressed point in one line as 86, thus by using adjacent depressions in this line, describing a sequence of closely adjacent parallel circles, which will produce a single heavy black line when a plate is etched, or cause the routing tool to remove all metal. between the first and the last lines described. If it is desired to have the border made up of parallel lines, the depressed points in the line 37 are used, these points being spaced apart sufficiently to leave a barrier between succeeding lines whether the plate be routed out or acid etched.

This straight line design, by using different depressions in the line 36 or 37, but not succeeding depressions, may be used to provide a background for the letters or numerals and toward the center of the design.

If it be desired to provide an'undulatory border or background, the stop pin 43 may be removed, thus permitting the impact plate %0 to follow the convolute perimeter of the plate 2E3, thus giving a wavy effect to the reproduced line, or any other desired effect according to the contour of the plate 42 which is used.

By selecting different depressions in either line 36 or 3'7, the border or design may be widened or retained in the form of a line design, and may be limited to'opposite sides of the letters or characters, or across the body thereof so as to give a background efl'ect. The same effect can be secured by the use of a plate 44. By shitting the plate 12 or the plate 4% a distance less than that between the centers of two elevations therein or between two lines e5, succeeding lines may be caused to cross and re-cross each other or weave in and out in a manner to increase the intricacy or pleasing effect of the border or background.

During the operation of the machine the work platesupport 10 in the type of machine shown, occupies a fixed position, the circular effect in the design being secured solely through the movements of the car riage 14: under the control of thetransmitter arm 17 and stylus 18 in 'followingthe characters upon the pattern plate.

Through the employment of the layout disk 96 and the rotatable pattern plate 25, any desired combination of letters or characters may be secured.

The base and its appurtenances are used merely when creating a circular design. If it be desired to incorpoate in this" design, or about it, rertiliueally arranged let ters, this can be done by removing the base 22 and using the etching or like machine in the usual manner.

The diameter of the plate 25 is controlling as to the proportionate diameter of the circle reproduced, and of the heightotthe letters or characters in the circular design, although the adjustment of the machine will control the absolute proportions of both in the reprruluctiou.

Disks 25 0t ditlercnt diameters and having letters of ditl'erent sizesor styles thereon may be used, in-the machine, however, although for ordinarypurposes but a single disk is required.

It is not my intention to limit tion to the precise details or construction shown in the drawings, it being apparent that-such .may be varied without departing from vthe spirit and scope of the invention.

Having described the invention, what I claim as new and desire to have protected by Letters Patent, is

1. an etching or like machine embodying the invenand having depressed'letters digits or other characters circularly arranged thereon about carrier being'c-apalole of relative universal arm adapted to cause such relative movement, it tracing .stylus .carried thereby, a

pattern table,.:a basesecuredthereto, a circular pattern plate rotatably mounted on saidbase in operative relation to said-stylus a common center, and a layout sheet carried .by said base and projecting beyond the edge of said plate, whereby succeeding movements ofsaid rotary plate necess-aryto secure'the completed design, maybe indicated.

2. An etching or like machine embodying therein-a work plate support, a carrier :for'

:a work point or tool, said support andsaid movement. upon a single-plane, a transmitter arm adapted to cause such relative movement a tracing stylus carried thereby, a pattern table, a base secured-thereto, a pivot carried by said base, a circularpatteruplate removably and .rotatably mounted on said pivot-and in operative relation-to said stylus and'having depressedletters, digits, or other characters circularly arranged upon opposite sides JthereOf about the :aXis of 'said='95 pivot, the letters, digits, or other characters uponone side 'of-said plate having :the tops thereof presented toward the periphery thereof, and upon the other side presented toward said pivot, anda layoutsheetcarried by saidbase andprojecting beyond the ,edge

.of said plate, whereby succeeding movementsof said rotaryplate necessary/to secure the completed design, may-beindicated.

3. An etchingor likemachine embodying thereina work plate-support, a carrier for a avork point or tool, said support and said carrier beinglcapable of relative universal movement upon a single plane, a-transmitter arm adapted to cause such relative move- 1110 ment, tracingstylus carried thereby, a pattern table, a "base secured thereto, a circular ;p.,a;tternlate rotatably mounted on said base in operative relationto saidstylus and having depressed letters, digits, orother char- .acterscircularly arranged thereon about a common center, and a layout sheet carried by saidbase, rotatably mounted upon said baseto have movement about the same axis as, and projecting beyond the edge of, said 0 plate, whereby succeeding movements of said rotary plate necessary to secure the com pleted design, maybe indicated.

4. An etching or like machine embodying therein a workplate support, a carrier forj a work point or tool, said support and :said carrier being capable of relative universal movement upon a single plane, a: transmitter arm adapted ,to cause such relative movement, a tracing stylus carried thereby, a pattern table, a base secured thereto, a circular pattern plate rotatably mounted on said base in operative relation to said stylus and having depressed letters, digits, or other characters circularly arranged thereon about a common center, a layout sheet carried by said base and projecting beyond the edge of said plate, whereby succeeding movements of said rotary plate necessary to secure the arm adapted to cause such relative movement, a tracing stylus carried thereby, a pattern table,-a base secured thereto, a circular pattern plate rotatably mounted on said base in operative relation to said stylus and having depressed letters, digits, or other characters circularly arranged thereon about a common center, a layout sheet carried by i said base and projecting beyond the edge of said plate, whereby succeeding movements of saidrotagry plate necessary to secure the completed design, may he indicated, and clamping means whereby said sheet may be secured in any ad usted position.

6. An etching or like machine embodying k therein a work plate support, a carrier for a work point or tool, said support and said as,

carrier being capable of relative universal movement upon a slngle plane, a transmitter arm adapted to cause such relative movement, a tracing stylus carried thereby, a pattern table, a base secured thereto, a circular pattern plate rotatably mounted on said base in operative relation to said stylus and having depressed; letters, digitsyor other characters circularly arranged thereon about a coii'unon center, a layout sheet carriedby said base and projecting beyond the edge of said plate, whereby succeeding movements of said rotary plate necessary to secure the completed design, may be indicated, means whereby said plate may be held in any adjusted position, and clamping means whereby said sheet may be secured in any ad usted position.

7. An etching or like machine embodying therein a work plate support, a carrier for a work point or tool, said support and said carrier being capable of relatlve universal movement upon a single plane, a transmitterarm adapted to cause suchrelative move- 11181113, a tracingstylus carried thereby, apattern table, a base secured thereto, a circular pattern plate rotatably mounted on said base in operatlve relation to said stylus and having depressed letters, digits, or other "characters circularly arranged thereon about plate to form substantially circular lines adjacent the characters.

8. An etching or like machine embodying thereinv a work plate support, a carrier for a work point or tool, said support and said carrier being capable} of relative universal movement upon a single plane, a transmitter arm adapted to cause such relative movement, a tracing stylus carried thereby,

a pattern table, a base secured thereto, a circular pattern plate rotatably mounted on said base in operative relation to said stylus and having depressed letters, digits, or other characters circularly arranged thereon about a common center, a layout sheet carried by said base and projecting beyond the edge of said plate, whereby succeeding movements of said rotary plate necessary to secure the completed design, may be indicated, and an arm rotatably mounted upon said base about an axis concentric with the axis of said plate, said arm having alined depressions therein whereby the stylus will be guided in a substantially circular path to form lines adjacent the characters in the reproduced design.

9. An etching or like machine embodying therein a work plate support, a carrier for a work point or tool, said support and said carrier being capable of relative universal movement upon a single plane, a transmitter arm. adapted to cause such relative movement, a tracing stylus carried thereby, a pat terntable, a base secured thereto, a circular pattern plate rotatably mounted on said base in operative relation to said stylus and having depressed letters, digits, or other characters circularly arrc nged thereon about a common center, a layout sheet carried by said base and projecting beyond the edge of said plate, whereby succeeding movements of said rotary plate necessary to secure the completed design, may be indicated, an arm rotatably mounted upon said base about an axis concentric with the axis of said plate including a carriage having alined depressions therein whereby the stylus will be guided to form lines adjacent the characters of the reproduced design, said carriage being capable of movement radially of the axis oiflmovement of said arm, and means whereby radial movement will be imparted to said carriage substantially simultaneously with its circumferential movement.

10. An etching or like machine embodying therein a work plate support, a Carrier for a work point or tool, said support and said carrier being capable of relative universal movement upon a single plane, a transmitter arm adapted to cause such relative movement, a tracing stylus carried thereby. a pattern table, abase secured thereto, a circular pattern plate rotatably mounted on said base in operative relation to said stylus and having depressed letters, digits, or other characters circularly arranged thereon about .a common center, a layout sheet carried by said base and projecting beyond the edge of said plate, whereby succeeding movements of said rotary plate necessary to secure the completed design, may be indicated, an arm rotatably mounted upon said base about an axis concentric with the axis of said plate including a carriage having alined depressions therein whereby the stylus will be guided to form lines adjacent the characters of the reproduced design, said carriage being capable of movement radially of the axis of move ment of said arm, means whereby radial movement will be imparted to said carriage substantially simultaneously with its circumferential movement, and removable means whereby said carriage may be (flUSG-lll to follow either a true circular path or have radial movement under the control, of said means.

11. An etching or like machine embodying therein a work plate support, a carrier for a work point or tool, said support and said carrier being capableoi relative universal movement upon a single plane, a transmitter arm adaptedvto cause such relative movement, tracing stylus carried thereby, a pattern table. a base secured thereto, a circular pattern plate rotatably mounted on said base in operative relation to said stylus and hav; ing depressed letters, digits. or other characters circularly arranged thereon about a common center, a layout sheet carried by said base and. projecting beyond the edge of said plate, whereliy succeeding movements of said rotary plate necessary to secure the completed design, may be indicated, an arm rotatz-ihly mounted upon said base about an axis concentric with the axis of said plate including a carriage having alined depressions therein whereby the stylus will he guided to form lines adjacent the characters o1 the reproduced design, said carriage being capable of movement radially of the axis of movement of said arm, a plate positioned about the axis of movement of said arm having an undulatory or convolute edge, an impact plate carried by said carriage and adapted to co-operate with theedge of said plate, and a spring connected with said arm and-said carriage whereby said impact plate is normally forced toward the undulatory or convolute edge'ot said plate, and said carriage,

with the movement of the stylus, will have radial movement imparted thereto simultaneously with its circumferential movement;

12. An etching or like machine embodying therein a worlrplate su-pport,-a carrier for a work point or tool,-said support and said carrier being capable-of relative universal =movement upon a single'plane, a transmitter arm adapted itO cause such relative movement, atracing stylus carried thereby, apatternit-able, a bass secured thereto,ac1rcular completed design, may be indicated, an arm ,rotatablymounted upon said base about an axis concentric with the axis of said plate including a-carriage'having alined depressions therein whereby the stylus will be guided to form lines adjacent the characters of the reproduced design, said carriage being capable of movement radially of the axis of movement of said arm, a plate positioned about the axis ofmovement of said arm having'an undulatory .or convolute edgmanim- .pact plate carried by said carriage and adapted to co-operate with the edge of said plate, a spring connected with said arm and said carriage whereby said impact plate is normally forced toward vthe undulatory or convolute edge of said plate, and said care riage, with the movement of the stylus, will have radial movement imparted thereto simultaneously with its circumferential movement, and a pin removably mounted upon said arm in operative relation to said carriage, whereby said impact plate may be held out oi engagement with the undulatory or convolute edge of said plate, or be permitted to engage'same. I

13. An etching or like machine embodying therein a work plate support, a carrier for a workipoint or tool, said support and said carrier being capable of relative universal rotatably mounted upon said base about an axis concentric with the axis of said plate including avcarriage having alined depressions therein whereby the stylus will be guided to form lines adjacent the characters of the reproduced design, said carriage being capable ot movement radially of the axis of movement oi said arm, a plate positioned about the axis of movement of said arm having an undulatory or convolute edge, an impact plate carriedby said carriage and adapted to co-operate with the edge of said plate, and a spring connected with said arm and said carriage whereby said impact plate isnormally forced toward the undulatory or convolute edge of said plate, and said carriage, with the movement of the stylus, will have radial movement imparted thereto simultaneously with its circumferential movement, said plate having the undula-tory or convolute edge being adjustable about the axis of said arm, whereby succeeding lines may be caused to cross and re-cross each other.

14. An etching or like machine embodying therein a work plate support, a carrier for a workpoint or tool, said support and said carrier being capable of relative uni-- versal movement upon a single plane, a transmitter arm adapted to cause such relative movement, a tracing stylus carried thereby, a pattern table, a base secured thereto, a pivot carried by said base, a circular pattern plate removably and rotatably mounted on said pivot and in operative relation to said stylus and. having depressed letters, digits, or other characters circularly arranged upon opposite sides thereof about the axis of said pivot, the letters, digits, or other characters upon one side of said plate having the tops thereof presented toward the periphery thereof, and upon the other side presented toward said pivot, a layout sheet :arried by said base and projecting beyond the edge of said plate, whereby succeeding movements of said rotary plate necessary to secure the completed design, may be indicated, an arm rotatably mounted upon said base about an axis concentric with the axis of said plate including a carriage having alined depressions therein whereby the stylus will be guided to form lines adjacent the characters oi the reproduced desi n said carriage being ca )able of: move- Inent radially of the axis of movement of said arm, a plate positioned about the axis of movement of said arm having an undulatory or convolute edge, an impact plate carried by said carriage and adapted to cooperate with the edge of said plate, and a spring connected with said arm and said carriage whereby said impact plate is normally forced toward the undulatory or convolute edge of said plate, and said carriage, with the movement of the stylus, will have radial movement imparted thereto simultaneously with its circumferential move ment, said plate having the undulatory or convolute edge being removably mounted upon said pivot, whereby a plate of one contour may be substituted for a plate 0i another contour.

15. An etching or like machine embodying therein a work plate support, acarrier for a work point or tool, said support and said carrier being capable of relative universal movement upon a single plane, a transmitter arm adapted to cause such relative movement, a tracing stylus carried thereby, a pattern table, a base secured thereto, a pivot screw carried by said base, a circular pattern plate removably and rotatably mounted on said pivot and in open tive relation to said stylus and having depressed letters, digits, or other characters circularly arranged upon opposite sides thereof about the axis of said pivot, the letters, digits, or other characters upon one side of said plate having'the tops thereof presented toward the periphery thereof, and upon the other side presented toward said pivot, a layout sheet carried by said base and projecting beyond the edge of said plate, whereby succeeding movements of said rotary plate necessary to secure the completed design, may be indicated, an arm rotatably mounted upon said base about an axis concentric with the axis of said plate including a carriage having alined depressions therein whereby the stylus will be guided to form lines adjacent the ch araoters of the re produced design, said carriage being capable of movement radially of the axis of movement of said arm, a plate positioned about the axis of movement of said arm having an undulatory or convolute edge, an impact plate carried by said carriage and adapted to co-operate with the edge of said plate, a spring connected with said arm and said carriage whereby said impact plate is normally forced toward the undulatory or convolute edge of said plate, and said carriage, with the movement of the stylus, will'have radial movement imparted thereto simultaneously with its circumferential movement, said. plate having the undulatory or convolute edge being remov'ably mounted upon said pivot screw, whereby a plate of one contour may be substituted for a plate of another contour, and a shouldered nut cooperating with said pivot screw adapted to engage and look said pattern plate with relation to said base while permitting free rotary movement of said arm.

16. An etching or like machine embodying thereina work plate support, a carrier for a work point or tool, said support and said carrier being capable of relative universal movement upon a single plane, a transmitter arm adapted to cause such relative movement, a tracing stylus carried thereby, a pattern table, a base secured thereto, a pivot screw carried by said base, a circular pattern plate removably and r0 tatably mounted on said pivot and in operative relation to said stylus and having depressed letters, digits, or other characters circularly arranged upon opposite sides thereof about the axis of said pivot, the letters, digits, or other characters upon one side of said plate having the tops thereof presented toward the periphery thereof, and upon the other side presented toward said pivot, a layout sheet carried by said base and projecting beyond the edges of said plate, whereby succeeding movements of said rotary plate necessary to secure the completed design, may be indicated, said sheet being rotatably mounted upon said pivot screw, clamping means whereby said sheet may be secured in any adjusted position, an arm rotatably mounted upon said base about an axis concentric with the axis of said plate including a carriage having alined depressions therein whereby the stylus will be guided to form lines adjacent the characters of the reproduced design, said carriage being capable of movement radially of the axis of movement of said arm, a plate positioned about the axis of movement of said arm having an undulatory or convolute edge, an impact plate carried by said carriage and adapted to co-operate with the edge of said plate, a spring connected with said arm and said carriage whereby said impact plate is normally forced toward the undulatory or convolute edge of said plate, and said carriage, with the movement of the stylus, will have radial movement imparted thereto simultaneously with its circumferential movement, said plate having the undulatory or convolute edge being removably mounted upon said pivot screw, whereby a plate of one contour may be substituted for a plate of another contour, and a shouldered nut co-operating with said pivot sorew adapted to engage and lock said pattern plate with relation to said base while permitting free rotary movement of said arm.

In witness whereof I have hereunto affixed my signature, in the presence of two subscribing witnesses, this 27th day of June, 1921.

WILLIAM EATON.

Witnesses:

MARY L. HELLEMANN, ROSALYN OHALLORAN.

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