US1039712A

US1039712A - Engraving-machine.

Info

Publication number: US1039712A
Application number: US58262910A
Authority: US
Inventors: William S Eaton
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-09-19
Filing date: 1910-09-19
Publication date: 1912-10-01
Anticipated expiration: 1929-10-01

Description

W. S. EATON.

ENGRAVING MACHINE.

APPLICATION FILED SEPT.19,1910.

1,089,712; Patented 0015.1,1912.

5 SHEETS-SHBET 1.

W. S. EATON.

ENGRAVING MACHINE.

APPLICATION FILED SEPT.19,1910.

Patented Oct. 1, 1912.

84 5 SHEETS-SHEET 2.

W. S. EATON.

ENGRAVING MACHINE.

APPLICATION FILED SEPT.19,1910.

1,039,712. Patented 0ct.1 ,191 2.

5 SEEETS-SHEET 3.

W. S. EATON.

ENGRAVING MACHINE.

APPLIUATION FILED SEPT. 19, 1910.

1,039,712. Patented 0cf.1,1912.

5 SHEETSSHEET 4.

est: [52; Inventor:

j m; by

91m A44, Atty W. .S. EATON.

BNGEAVING MACHINE.

APPLIOATION FILED SEPT. 19, 1910.

Patented 0015.1,1912.

5 SHEETS-SHEET 5.

ventor A A gay/z A est: J

WILLIAM S. EATON, O1, SAG HARBOR, NEW YORK.

mennvme -imonmn.

Specification of Letters Patent.

Application filed September 19, 1910, Serial No. 582,6.i9.

To all whom it may concern:

Be it known that I, WILLIAM S. EA'roN, a citizen of the United States, residing at Sag of New York, have invented certain new and useful Improvements in Engraving-Machines, of which the followin is a specification, reference being had t erein to the accompanying drawings, which form a part thereof.

My invention relates to engraving machines and more particularly to a type of pantographical machine.

The main object of the invention is to provide a machine of the pantographic type which will have a large operating range of work, both as to the length of lines and as to the number of lines capable of being reproduced, without necessitating the readjustment of the machine.

A further object is to provide an engraving machine wherein the pattern or templet carrier and the work bed will lie on parallel planes and each occupy the same plane at all times, the scale of reproduction being varied without adjusting these parts, thus insuring the maintenance of the proper relative levels of these parts and avoiding the necessity of truing up the machine after each adjustment, with a resultant uniformity in the relation of the several parts during the making of any plate in its entirety.

A still further object is to provide an engraving machine which, while permitting the requisite minute adjustment thereof, will be so constructed and arranged as to be reasonably rigid throughout, thus avoiding such wear of parts as would, through the presence of lost motion, tend to impair the accuracy of the work done upon the machine.

A still further object is to provide a machine wherein the transmitter will be so supported as to avoid undue wear, or anyvariation in its operation, while capable of moving freely in perpendicular lines.

A still further object is to provide in an engraving machine a transmitter, the opposite ends of which are pivotally connected to the stylus arm, and, by universal joints, to the work bed carriage respectively, the transmitter being adapted to automatically adjust itself to the stylus arm or vice versa to compensate for the oscillatory movement of said transmitter in conveying movement from the stylus to the work bed, irrespective of the .direction of such movement. Harbor, in the county of Suffolk and State graving machine wherein the character of A still further object is to provide an enthe reproduction from a given pattern may Patented Oct. 1, 1912.-

;be distorted without varying the adjustment of the transmitter mechan sm.

A still further object is to provide an engraving machine wherein the carriage support will cause the work bed to have t e desired universal movement on a single plane and the minimum of friction on the various parts.

A still further object is to provide a ma-v chine wherein the friction throughout will be reduced to a minimum for the twofold purpose of minimizing wear upon the various moving parts and the operation of the mac ine.

A still further object is to provide a machine of this character wherem the routing head support and the work bed will always be on the same relative parallel planes, the' adjustment of the machine to vary the scale of reproduction not involving the readjustment of these parts;

A still further object is to provide an engraving machine embodying therein a' transmitter mechanism the levers of which will have uniform motion as defined by the pattern, the scale of reproduction being determined by a variance in the leverage of said levers.

A still further object is to provide an engraying machine of this character wherein that portion of the transmitter mechanism carrying the stylus will always move upon the same horizontal plane,'thus eliminating the necessity for making any allowance for the are described by the transmitter in conveying movement from the stylus arm to the work bed.

A still further object is to provide a ma,

chine wherein the work bed may be readilybrought forwardly of the machine from beneaththe cutter head for the purpose of inspection and as readily returned and secured in its former position.

A still further'object is to provide a machine of this character wherein all of they parts excepting the means varying the leverage of the transmitter levers will occupy the samerelative positions, the variance of the ermitting ease in scale of reproduction being accomplished without affecting the relation of the various other parts of the machine toward each other. Y

A still further object is to provide in a machine of this character means for adjusting the leverage of the transmitter levers which will not be affected by the subsequent operation of the machine, thus avoiding the likelihood of a loss of adjustment during the production of a plate.

The invention consists primarily in an engraving machine having a work bed universally movable on a single plane, a pattern support, a stylus arm, a transmitter lever system the opposite ends of which are respectively connected to said stylus arm and to the supportof said work bed, a universal connection between said transmitter arms invention;. Fig. 2 is a rear elevation thereof with one of the transmitter lever arms broken away to disclose the interior construction and arrangement thereof; Fig. 3 is a plan view of the machine; Fig. 1 is a detailed view of the work bed with the opened position thereof indicated in dotted lines; Fig. 5 is a detailed view of the upper part of the machine including the work bed, the stylus, the upper part of the transmitter mechanism, and the routing head, the stylus frame being shown adjusted to that position which will give an oblique aspect to' the reproduced characters; Fig. 6 is a diagrammatic view of the difi'erent characters which may be reproduced upon the machine from a single pattern character; Fig. 7 is a horizontal section on the lines 7-7 of Fig. 2, and Fig. 8 is a detailed'view of the stylus and its carrying frame, showing it adjusted to form an oblique reproduction of a pattern letter.-

Like letters refer to like parts throughout the several views.

In the embodiment of the invention shown in thedrawings, I have shown atlO a pedestal adapted to be secured to the floor, which pedestal is surmounted by a cylindrical column 11 of comparatively large diameter,

extending upwardly from the pedestal of the machine. This cylindrical column supports all of the working parts of the machine thus not only imparting rigidity to the entire machine but establishing a fixed relation of parts, not affected by the adjustment of the scale of reproduction. Carried by the column 11 above the pedestal 10 is a rectangular frame 12 having laterally extending Vways 13 therein. Moving in said ways are V-wheels 14 mounted upon axles 15. Mounted upon the V-wheels 14 is a carriage 16, the upper surface of which is provided with V-way's 16* extending at right angles to the ways 13, and the lower surface pi which is provided with V-tracks 17,'en-

gaging the top of the rollers 14. Mounted in the V-tracks 17 are the wheels 18 con-' nected by axles 19, and in turn surmounting them is a second carriage-2O having downwardly presented V tracks 21 at right angles to the tracks 17.

There are two pairs of rollers, 1 1 and 18 respectively, the axles thereof being connected by the

reaches

22 and 23.

The carriage 20 supports the arch 24 carrying the top plate 25 which is dovetailed to a second plate 26 thus permitting the lateral'adjustment of the plate 26, the thumb screw 27 being provided to lock said plate 26 in its adjusted position. The upper surface of the plate 26 is also dovetailed and mounted therein is a plate 28 locked by means of the thumb screw 29 in its relation to the plate 26. The plate 28 is channeled as shown in Figs. 1 and 2 and attached thereto b means of set screws 30 is a bipart wor bed consisting of an immovable plate 31 and a face plate 32 having a pluralit of openings 33 therein and adjacent para lel straight gage lines to permit work of any size to be accurately positioned and secured thereto by means of ordinary dogs 34. The plate 32 is pivoted at one side thereof to the plate 31 so as to be readily swungputwardly, said plate 31 being provided with a stop 35 cooperating with the curved slot 36 in the plate 32, in order that, afterbeing swung upon its pivot said plate 32 may be brought back accurately to its former position. To prevent the displacement of the plate 32 when the steel plate 37 is being engraved, I provide a lock, consisting of a cam 38 pivoted to the plate 31 and engaging the plate 32. This construction. 1

'work, and to facilitate the removal of finished work andth'e substitution of new work in place-thereof. This construction of work bed eliminates any substantial vibration while the cutter tool is working, as the arched support 24 affords a firm support to the work. The superposed carriages mount- 351 approved type of therewith. This arrangement of supporting wheels reduces the friction between the various parts and minimizes wear, thus pro longing .the life of the machine'and preservan ing the level of the work bed 32. It Wlll be observed that, by this construction, the

plane of the work bed remains constant, any

variance in the scale of reproduction being accomplished by adjusting the leverage of as the transmitter system of levers, the entire range of adjustment .being accomplished i without disturbing the work bed in any way, thus eliminating all those difficulties incidental to leveling up the work bed after each adjustment. f

Carried by the column 11 above the work bed 32 is a block 41 having therein vertical ways in which is mounted the spring supi ported reciprocatory tool head 42 which is fitted with a micrometer stop 43 for determining the depth of cut with each application of the cutting tool to the work. The details of construction of thishead are immaterial to the invention as any desired or tool. head may be employed.

Carried by the head 423s an abutment 44 adapted to be engaged by acrank arm 45 mounted upon the shaft 46 extending longiopposite end a crank arm 47 by means of which spring is controlled by the nut 50,

the spring 49 hearing between the nut 50 and the said crank arm 47. The link 48 is connected to a treadle 51, convenient to the foot of the operator. 'By this construction the pressure applied to the tool-orrouter is governed by the tension ofthe spring 49, the .action of the treadle 51 serving to first:

bring the tool into engagement with the work andthen so tension the spring 49 to cause the subsequent feeding movement: 5

of the tool to be under the control of this machine as'the breakage of tools wil not result from the depression of the treadle to The cutter head and the the full extent. work bed having a definite constant relation 85, to each other, and the plates upon which wheels through the engagementof the axles tudinally of the machine and carrying at its work is done being of substantially uniform gage, littledifliculty is experienced in determining the moment of initial contact be- Ztween the tool and the plate and the subsequent regulation of the depth of cut, with this moment of initial contact as the basis for such regulation. a g I Machines of this type are especially Zadapted for making plates for under surface printing wherein uniformity in the %depth of cut is desirable, the quality of the work produced resulting from the amount of ink retained in such cuts. The'definite relation of the work bed and the cutter head tends to preserve a relation of parts which @facilitates the production of plates having funiform depth of cut, notwithstanding frequent readjustments of the machine to vary the-size and style of the letters of emblems ibeing reproduced.

' The remaining mechanisms of the machine to be considered are the pattern or 'gtemplet support, the tylus and its support,

Qand the transmitter mechanism and its apipurtenances, through which the scale of rezpreaduction is determined and may be va- Supported upon the to of the column 11 @is a forwardly projecte shelf 52 forming a rigid support for the pattern and having -;a fixed relation to said column. Toward the rear of the shelf 52 is a plate 53 against which the form frame 54 is thrust and docked by the lock cam 55. This form frame comprises a laterally extended channel having a soft friction surface 56 between the ?rear thereof and the movable block 57 which is adapted to be thrust against said friction %surface by the thumb screws 58. This confstruction of frame permits the type plates i59'to be set in the proper'position and properly spaced apart, and firmly held in this position so as not to be disturbed by the grepeated movement of the stylus thereover.

; Each separate pattern 59 consists of an L shaped individual plate having a letter or &other emblem countersunk therein, the short arm of each plate being inserted between the block57 and the friction surface or pad 56 and firmly held thereagainst by the said block. This construction permits the patjtern 'to be readily set up with master type ithus materially reducing the cost of the pat- !tern and at the same time permitting the quick substitution of, one pa tern for an- ;other.

Mounted upon the cylindrical column 11 with aclose sliding-fit, is the sleeve 60 having side bosses 61 in which is mounted, by means of pivot screws 62, an oscillatory frame 63 open in the center to clear the sleeve 60. The pivotal support of the frame 63 permits it to move freely, and any wear upon the pivot may be readily taken 11 by said screws. The frame 63 oscillates about 1 a single axis only, which axis extends laterally of the machine. ()n opposite sldes of the frame 63 are bearings 64, the axis of of mounting the transmitter levers permits.

the universal movement of the carriage 20 carrying the work bed 31 32, said arrangement of pivots forming a well known type of universal joint.

. Mounted upon the top of the column 11 is the frame 69 having laterally extended forked arms carrying anti-friction rollers 70 at widely divergent points, said rollers forming a support for the upper portion of the transmitter mechanism to limit the movement thereof to a single horizontal plane, thus eliminating any are of the stylus due to the oscillatory movement of the transmitter levers 67. Slidably mounted in the transmitter sections 67 (which are hollow) are cylindrical sections 71, having a vertical movement within the sect-ion 67. The upper end of each section 71 is .pivotally connected to the frame 72 by means of pivots 73 extending parallel with the pivots 65. These pivots 73 permit the free lateral movement of the frame 72, the longitudinal movements thereof resulting in a slight tilting action thereof as shown in Fig. 1 in dotted lines. The frame 72 is also provided with laterally extended arms 74, upon each of which is rotatably mounted a sleeve 75 adapted to engage the anti-friction roller 70 and minimize the friction between said rollers and said sleeve when the frame is moved longitudinally of the machine, the rollers 7 O minimizing the friction upon the lateral movements of said frame. The sleeves 75, through their engagement with the rollers 70, insure movement of the frame 72 in a single horizontal plane, the are described by the transmitter lever 67 being compensated for by the automatic adjustment of the nested

sections

67 and 71.

The upper ends ofv the sections 67 of the transmitter levers are connected by a reach rod 76 to insure unison in the movement of both of these levers, while. rmitting the automatic telescopic action 0 the two

members

67 and 71, above referred to.

- The sleeve. 60 is adjustably secured relative to the column 11 by means of a rack 77 carried by said column, and a pinion 78 carried by said sleeve, provided with operating handles 79. By this construction 113 will be observed that the entire frame 63 may be moved vertically of the column 11 and of the transmitter sections 67 thus varying the leverage of said. sections 67. To facilitate this adjustment of the machine whlch results in determining the scale of reproductlon, I

provide one of the sections 67 with a scale -as shown in Fig. 5. This means of ad ustment of the fulcrum about which the lever 67 acts is one which may be readily 0 created and will, by reason of the absence 0 vibravtion of the collar 60 and column 11, remain in the set position without likelihood of a loss of adjustment through the operation of the machine.

The frame 72 is provided centrally thereof with a verticalboss 80 and ad ustably mount-ed therein is. a stud 81 carrying the plate 82 on which is mounted the cross head 88 having pivotally attached thereto the frame or yoke 84 carrying the mount85 for the stylus proper 86. The yoke 84 is provided with a split collar 87 in which the stem 88 carrying-the mount 85 is adjustably clamped. This construction permits the stylus to follow the pattern irrespective of the slight tilting action of the frame 72 as well as permitting that adjustment of the machine to form oblique letters from astraight pattern. The cross head 83 is securedto the plate 82 by means of a pivot screw 89, clean ance being provided in said plate 82 to permit the lateral tiltingof the yoke 84 to accomplish that adjustment of the machine above referred to. The vertical adjustment of the stem or stud 81 will accomplish either the extension or condensation of the pattern in the reproduction in a manner which will 100 more fully appear hereafter.

The operation of the herein described engraving machine is substantially as follows :In setting the machine for operation, the lock cam 55 is released and the form 105 frame 54 removed from the machine. The master types are then set up in this frame -with the short arm or pendant lug thereof inserted between the block 57 and the friction pad 56. The proper master types having been thus positioned in the form, they are spaced apart the required distance and the block 57 set up hard against said short arm or pendant lug, by means of the screws 58 holding the types firmly in this position. The form frame 54 is then replaced upon the shelf 52 and locked in this position. The

block or plate to be reproduced is then secured to the work bed 32 by means of the dogs 34, the proper alinement' of this plate being secured by means of the gage lines on the top plate.

f When it is desired to secure a reproduction of the pattern upon a reduced scale, the sleeve 60 is lowered by means of the rack and pinion 7 7-7 8, carryin with it the frame 63 and the collar 66. The proper adjustment maybe readily procured by means of the scale on oneof the lever arms 67. It will be observed that by this adjustment the reduced or an enlarged scale according towhich side of the longitudinal center of the nested transmitter lever the pivots 62 are positioned.

The machine having been setto form a reproduction upon a definite scale, the pattern and the work rplate are brought into such relation as to properly positionthe reproduced matter upon the plate. When these things have been done, the cutter or routing tool is advanced to establish an initial contact between the tool and the work, the tool head being depressed to the full extent when this initial contact is deter-. mined. Thereafter the tool head is set to advance a maximum distance with each full depression of the treadle 51. The stylus 80 is then moved slowly over the pattern transmitting a movement, similar in direct-ion;

but varying in quantity, to the work bed,

thus bringing different portions thereof into operative relation to the cutting tool or router. This movement is imparted to the.

work bed through the transmitter mecha nism, consisting of the nested

levers

67 and 71, the frame connecting the latter, and the stylus supporting frame or yoke; the connecting frame 7 2 always moving upon a horizontal plane. The are described by the nested levers is compensated for by the automatic extension or contraction of said nested levers, the tilting of the levers being permitted by the pivotal connection between them and the said frame, as to the lateral movements thereof, and by the pivotal connection between the stylus frame or yoke and-said frame, as to the longitudinal movements thereof, said frame being tilted only with such. last named movements.

-The manner of mounting the frame 63- relative to the sleeve 60, and the levers 67 relative to said frame, permits the simultaneous movement of said lever arms in lines perpendicular to each other, so as to permit a universal movement within the limits of this mechanism. vers 67 being connected to' the carriage 20 by a ball and socket joint, a similar movement is imparted to said carriage, that arrangement of wheels and tracks described permitting the free movement of the car- The lower end of the le- Y desirable, the treadle 51 is depressed to the full extent the spring 49 sup lying that pressure necessary to automatica ly advance.

the tool as required to make such maximum cut, the feeding of the tool thus being automatic within the limit set.

With the lateral reciprocation of the frame 72, the roller 70- will act upon the sleeves in a manner to accomplish the elongation of the bi-p'art telescopic transmitter levers, the return of these levers to normal being throu h gravity.- The friction between the rollers 0 and sleeves 75, with a lateral movement of the frame 72, is counteracted by the free rotation of the said rollers, and with a -l( )ngitudinal movement thereof, by the free rotation of said. sleeves.

When it is desired to exact-1y reproduce the pattern upon either a reduced or an enlarged scale, the. stylus holder 85 will be located upon a plane above the plane of the point of pivotal connection of the frame. or yoke 84: with the cross head 83, in a machine so set duction from the pattern. .When the machine is so set, the reproduction from the block pattern will be as indicated by the letter a in Fig. 6. I

If it be desiredto have the reproduction oblique as indicated by the letter Z) in Fig. 6, the cross head 83 will be tilted with the left hand side thereof down and the right hand side thereof raised, the extent of such tilting being governed bythe desiredangle of inclination of the height lines of the letter or pattern. If, however, it is desired to tilt the letter in the manner indicated at c, Fig. 6, the cross head 83 will be tilted in the opposite direction'as shown in Figs. 5 and 8. This distortion of the reproduction results from the slight lateral deflection 0 f the transmitter mechanism due to thepivotal action of the frame or yoke 84 resulting from the slighttilting of the frame 7 2 upon a longitudinal movement thereof, such pivotal movement giving a slight side thrust to said frame through the reaction from the resistance encountered to the lateral movement of the stylus in oscillating obliquely from the normal line of movement ofthe head 72. The direction of this reaction is determined by the direction of inclination of the frame or yoke 84., and the quantity thereof, by the degree of inclination thereof. It will be observed that in effecting this oblique distor tion of the letter, none of the dimensions in the reproduction are varied from the original scale reproduction.

When it is desired to condense the reproduction, as indicated at cl in Fig. 6, the stud 81 is raised in the boss 80, thus raising the oint of application of power from the styus relative to the frame 63 and increasing the leverage as to the lateral movement of the frame 72, the increased leverage as to the longitudinal movement being compensated for by the readjustment of the work bed in restoring the stylus to the starting point upon the pattern, the said stylus havmg been advanced from the startin point by the are described thereby in a apting itself to the raised position of its pivots. No such readjustment being possible as to the lateral movement, the increased leverage at which the stylus frame or yoke acts upon the frame 72 results in a proportionate reduction in the quantity of lateral movement of the carriage 20 under the control of the

levers

67, 71, and a consequent condensation of the reproduction produced. By the reversal of this adjustment, the extended reproduction may be made as indicated by the letter e of Fig. 6, the lowering of the yoke 84 reducing the leverage of the

levers

67, 71, and increasing the relative lateral movement of the work bed.

If it is desired to condense or extend the reproduction throughout the entire plate, or line, the stylus 86 need not be readjusted, but if it is desired to preserve the previously fixed base line, the stylus may be restored to the starting .point of the pattern by lowering it in its holder 85 until the stud 88 is restored to its former level.

By the use of transmitter levers having adjustable pivots intermediate of the ends thereof, the scale of reproduction may be determined or varied by the mere adjustment of the position of these pivots without disturbing the adjustment of any other parts of a the machine, and the entire rangeof adjustment may be used without disturbing the work bed in any way. This permits the work bed to be mounted upon a perfect level and avoids the necessity for leveling u the 1 same after each adjustment of the sea e of reproduction. This is a matter of considerable importance, as the loss of level of the work bed would result in alack of uniformity in the depth of the cut made by the tool or router. In under surface work the intaglio cut retains the ink with which the printing is done and avariance in the depth of this cut results in the same mottled effect as would result from the use of types of diiferent heights.

The tool head, in the making of a plate, must be adjusted several times to secure the desired depth of cut, thus making permanency in the pattern necessary. Frequent inspection and cleaning of the plate is required, which is provided for by the bi-part work bed, the work bearing member of which may be swung outwardly and the work removed from under the tool.

said work bed, a pivotal connection between the other end thereof and said stylus arm, a universal pivotal bearing for said levers intermediate their ends, and a tool head adapted to'be adjusted relative to said work bed to regulate the depth of cut of the tool. 2. In an engraving machine, a work bed universally movable in a single plane, a pattern support, a stylus arm, a transmitter lever system, a universal connection between one end of said transmitter lever system and said work bed, a pivotal connection between the other end thereof and said stylus arm, a universal pivotal bearing for said levers intermediate their ends, means adjusting said bearings longitudinally of said levers to vary the scale of reproduction, and a tool head adapted to be adjusted relative to said work bed to regulate the depth of out o the tool.

3. In an engraving machine, a work bed universally movable in a single plane, a

. tern supportto said work bed, a universal joint between one end of said lever system and said work bed, a stylus arm, a pivotal connection between the other end of said lever system and said stylus arm, a frame pivotally supported upon said column, a pivotal connection between said frame and a point of said levers intermediate the ends, thereof, the pivots of said frame and said last named connection being perpendicular to each other, and a tool head adapted to be adjusted relative to the said work bed to regulate the depth of cut of the tool.

4.'In an engraving machine, a plurality of superposed carriages, supports therefor whereby said carriages may move perpendicularly relative to each other in parallel planes, a work bed rigidly mounted upon the uppermost of said carriages whereby said work bed is universally movable in a single plane, a pattern support, a central. -column extending between said members, a

transmitter lever system extending from adjacent to said pattern support to said work bed, a universal joint between one end of said lever system and said work bed, a stylus arm, a pivotal connection between the other end of said lever system and said stylus arm, a frame pivotally supported upon said column, a pivotal connection between said frame and a point of said levers intermediate the ends thereof, the pivots of said frame and said last named connection being perpendicular to each other, and a tool head adapted to be adjusted relative to saidwork bed to regulate the depth of cut of the tool.

5. In an engraving machine, a plurality lever system and said work bed, a pivotal connection between the other end thereof and said stylus arm, a universal pivotal bearing for said levers intermediate their ends, means adjusting said bearings longitudinally of said levers, to vary the scale of reproduction, and a tool head adapted to be adjusted relative to said work bed to regulate the depth of cut of the tool.

6. In an engraving machine, a work bed universally movable in a single plane, a pattern support, a stylus arm, a transmitter lever system embodying therein a plurality of telescopic levers, a universal connection between one end of said levers and said work bed, means holding the other end of said levers in a single plane, a pivotal connection between said other end of said levers and said stylus arm, a universal pivotal bearing for said levers intermediate the ends thereof, and a tool head adapted to be adjusted relative to said work bed to regulate the depth of cut of the tool.

7. In an engraving machine, a work bed universally movable in a single plane, a pattern support, a stylus arm, a transmitter lever system embodying thereina plurality of telescopic levers, a universal connection between one end of said levers and said work bed, a rigid head frame pivotally con nected to the other end of said levers, guides adjacent to said frame, a projection carried by said frame cooperating with said guides to cause said frame to move in a single plane, pivotal connection between said head frame and said stylus arm, a universal pivotal bearing for saidlevers intermediate the ends thereof, and a tool head adapted to be adjusted relative to said work bed to regulate the depth of cut of the tool.

8. In an engraving machine, a work bed universally movable in a single plane, a pattern support, a stylus arm, a transmitter lever system embodying therein a plurality of telescopic levers, a universal connection between one end of said levers and said work bed,a rigid head frame pivotally connected to the other end of said levers,

mediatethe ends thereof, and a tool head adapted to be adjusted relative to said work bed to regulatethe depth of cut of the tool.

9. In an engraving machine, a. work bed 7 "universally movable in a single plane, a

pattern support, a stylus arm, a transmitter lever system embodying therein a plurality of. telescopic levers, a universal connection between one end of said levers and said work bed, means supporting said stylus arm by a universal connection with'the other end of said levers, roll-er ides adjacent to said stylus arm, anti-frictlon means moving simultaneously with said levers and cooperating with said guides to cause one end of said levers to move in a single plane,'a

universal pivotal bearing for said levers intermediate their ends, and a tool head adapted to be adjusted relative to the said work bed to regulate the depth of cut of the tool.

10. In an engraving machine, a work bed universally movable in a single plane, apattern support, a central column extending between said members, a transmitter lever system extending from. adjacent to said pattern support to said work bed, a universal joint between one end of said lever system and said work bed, a stylus arm, a pivotal connection between the other end of said lever system and said stylus arm, a sleeve adjustably mounted upon said column, a frame pivotally supported upon said sleeve, a pivotal connection between said frame and a point of said levers intermediate the ends thereof, the pivots of said frame and said.

last named connection being perpendicular to each other, and a tool head adapted to be adjusted relative to said workbed to regulate the depth of cut of the tool.

11, In an engraving machine, a work bed universally movable in a single plane, a pattern support, a central column extending between said members, a transmittersl-ever system extending from adjacent to said pattern support to said work bed, a universal joint between one end ofsaid lever system and saidwork bed, a stylus arm, a pivotal connection between the other end of said lever system and said stylus arm, asleeve slidably mounted upon each of said levers intermediate the ends thereof, a pivotal connection between each'of said last mentioned levers and said frame, the pivots of said frame and said last named sleeve being perpendicularto each other, and a tool headadapted to be adjusted relative to the work bed to regulate the depth of cut of the tool.

12. In an engraving machine, the combination with a work bed, a pattern support,

and a tool head, of oscillating transmitter arms adapted to move said work bed uni versally, a frame adapted to move longitudinally and laterally of the machine in a single plane,-a pivotal connection between said frame and said lever arms, the pivots chine, a stylus frame havingflvertical ad.- justment in said last named frame, and a stylus arm pivotally mounted in said stylus thereof extendinglongitudinally of the maframe, said last named pivots extending lat-1 thereof extending longitudinally of the machine, a stylus frame carried by said first mentioned frame, a cross head having ofiset bearings mounted upon said stylus frame, means whereby said cross head may be adjusted about an axis parallel to the axis of the pivots connecting said transmitter arms with said first mentioned frame,

and a stylus arm mounted in said cross head, the axis of said last mentioned bearings extending laterally of the machine whereby the tilting of said cross head will give a lateral coefiicient of motion to the transmitter arm upon the longitudinal movement of the stylus.

14. In an engraving machine, the combination with a work bed, a pattern support, and a tool head, of: oscillating transmitter arms adapted to move said work bed universally, a frame adapted to move longitu dinally and laterally of the machine in a single plane, a pivotal connection between said frame and said lever arms, the pivots thereof extending longitudinally of the machine, a stylus frame carried by said first mentioned frame, a cross head having oil"- set bearings mounted upon said stylus frame, means whereby said cross head may be adjusted about an axis parallel to the axis of the pivots connecting said transmitter arms with said first mentioned frame, a stylus arm mounted in said cross head, the axis of said last mentioned bearings extending laterally of the machine whereby the tilting of said cross head will give a lateral coefiicient of motion to the transmitter arm upon the longitudinal movement of the stylus,

nation with a work bed, a pattern support, a

stylus arm and a transmitter mechanism between said stylus arm and said work bed,

of .means for adjusting the stylus arm to vary the scale of the lateral dimension of the reproduction, and means for adjusting said stylus relative to said transmitter mechanism whereby a lateral ,coeflicient of move- 'ment is imparted to said transmitter mechanism to change the direction of the longitudinal dimension of, or impart obliquity to, the reproduction. I

16. In an engraving machine, a fixed frame havin mounted thereon a plurality of superpose carriages,said frame and the lowermost carriage having thereon tracks or ways extending in perpendicular lines, antifrietion devices moving in said tracks and supporting said carriages respectively, means connecting the devices supporting such carria ge whereb they act simultaneously and in the same egree and a work bed carried by and fixed relative to the uppermost of said carriages.

17. In an engraving machine, a fixed frame having mounted thereon a plurality of superposed carriages, said frame and the lowermost carriage having thereon tracks or ways extending in perpendicular lines, antifriction devices moving in said tracks and supporting said carriages respectively, and a work bed carried by and fixed relative to the uppermost of said carriages, said work bed comprising a plurality of superposed plurality of openings and with gage lines whereby the plate being engraved may be accurately positioned thereon.

18. In an engraving machine, a transmitter mechanism embodying therein an oscillating lever, universal pivotal support for said lever intermediate the ends thereof, a work bed adapted to have universal movement in a single plane, and a universally movable stylus arm the opposite ends of said lever being connected respectively :to work bed and said stylus arm.

19. In an engraving machine, a cutter mechanism embodying therein a spring1 sus tained tool head, means advancing sai tool head to bring the tool into contact with the work, and means automatically advancing said head as the tool makes its out.

- 20. In an engraving machine, a cutter mechanism embodying therein a-spring sustained tool head, an abutment upon said head, a crank shaft having an arm engaging said said abutment whereby said head may be advanced to bring the tool into contact with the work, a second arm said shaft, a link having an abutment thereon, a spring set between said abutment and said last named arm, and means adapted to operate said link whereb the maximum movement of said link will first bring the tool into contact with the work, and thereafter automatically feed said tool through the compression of said spring.

21. In an engraving machine, the combination with a work bed, a pattern support, a stylus arm, and a transmitter mechanism the Work bed, to vary the direction of the longitudinal dimension of, or impart obliquity to, the reproduction.

In witness whereof, I have hereunto aflixed my signature in the presence of two witnesses, this first day of September, 1910.

- WILLIAM S. EATON. Witnesses:

R. P. CHAPMAN,

I. P. CUNNINGHAM.