US824818A - Carving-machine. - Google Patents

Description

PATENTED JULY 3, 1906.

4 SHEETS-SHEET 1.

il i'tneaaesi THE NORRIS FEIERS 2a., \vnsnluarnly, n c.

PATENTED JULY 3, 1906.

I". H. RIGHARDS. CARVING MACHINE. APPLIOATIIONJILED MAR. 19, 1902.

4 SHEETS-SHEET 2.

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THE NORRIS PETERS ca.. umsnmcran, D. c,

No. 8245818; PATENTED JULY 3, 1906. F. H. RICHARDS.

'QARVING MACHINE. APPILQIOIA'TLON FILED MAR. 19, 1902.

No. 824,818. PATENTED- JULY 3, 1906.

F. H. RICHARDS. GARVING MACHINE.

APPLICATION FILED MAE.19, 1902.

4 SHEETS-SHEET 4. Horizontal tool movement 7 vertical tool movement I Stock/256d movement v I 1 2 a 4 5 s 7 s 1 Laeezul tool movement .1 I.

i/(Fnesses: [12049126011- THE NORRIS "ETE'RS ca 'wnsumcmm n. c.

iiNrren STATES PATENT omea CARVING-IVIACHINE'.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed March is, 1962'. Serial No. 98.948;

To all whom it TIMLZ/ concern:

Be it known that I, FRANCIS H. RICH- ARDS, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Carvin Machines, of which the following is a speci cation.

This invention relates to machines for carving repeat ornaments or a repeating series of ornaments in diaper on wood, moldings, or the like where two or more tools or sets of tools, one or more for incising the contour of an ornament or a part thereof and another or others for making one or more cuts meeting said incision or incisions, coact to carve the desired design, and more particularly relates to a machine of the character just named in which the feeding of the stock is continuous.

My invention consists, first, in improved mechanism for actuating the cutting-tools at a high speed; secondly, in improved mechanism for producing a continuous feed of the stock and a following movement of the tools corresponding precisely with the movement of the stock during that portion of the movement of the tools taking place within the profile of the stock; thirdly, in improved mechanism for quickly returning the tools to their initial positions, and, fourthly, improved structure, combinatlon, and mechanically-perfect organization.

It is highly desirable in conceiving a mechanically-perfect mechanism to distribute the power exerted in operating the machine throughout the cycle of movements, thereby producing a balanced movement which allows the machine to be operated at high speed without excessive wear or vibration. Again, in a great measure the utility and commercial efficiency of a machine lie in the simple and compact structure employed, and particularly in the choice of mechanical elements combined to produce the desired results. The speed with which the finished product may be turned out by a machine is perhaps the most desired feature to be sought for and constitutes, after mechanical perfection, the measure of its utility and commercial value. In a machine of the class herein described the continuous feed is most desirable. All of these results I have aimed to accomplish in the structure here presented.

.zontally opposite the shaft 4.

My invention embodied in a carving-ma chine is illustrated in the accompanying drawings, in Which Figure 1 is a side elevation; Fig. 2, a front elevation; Fig. 3, a plan view; Fig. 4, a diagrammatic representation of the movements of the cutter mechanisms; Fig. 5, a diagrammatic representation of the feed mechanism; Fig. 6, a perspective detail showing the relative positioning of the cutters; Fig. 7, a detail in section, showing the relative positions of the cutters when leaving the stock; Fig. 8, a detail in section, showing the relative positions of the cutters at the extreme limit of their cutting strokes; Fig. 9, a detail in per spective of the spring-keeper for the presserroll stud; and Figs. 10, 11, 12, and 13 are respectively time-charts of the movements of the horizontal cutter, the vertical cutter, the feed, and the lateral tool-feed.

Referring to the drawings, the machine is assembled upon and supported by a frame A. At the rear of the frame is mounted in bearings 2 and 3 a main driving-shaft 4, upon which are mounted consecutively from right to left (see Fig. 3) a power-pulley B, a cam-groove Wheel. 5, a peripheral cam 6, a crank 7, a cam-groove wheel 8, and an elliptical gear-wheel 9. A stock-guide 11 traverses the top of the frame A laterally at about its central point, mounted parallel to the shaft 4. A lateral horizontal dovetail slideway 12 is provided in the forward end of the top of the frame A, in which a slide 13 is adapted to slide parallelly to the stockguide. Some distance below the top of the frame A a shaft 14 is horizontally journaled in the frame A at right angles to the shaft 4 and projects at both the front and rear of the frame. At its rearward end the shaft 14 is provided with an upwardlyprojecting fast arm 15, which carries at its upper end a horizontally-mounted conical roller 16, which engages the cam-groove 17 in the cam-groove wheel 8 at a point hori- The forward projecting end of the shaft 14 is provided with a fast arm 18 set in the same plane with the arm 15. The arm 18 is bifurcated at its upper end and embraces a horizontal pin 19, rigidly carried on the slide 13.

Upon the rotation of the shaft 4, carrying the cam-groove wheel 8, the roller 16, traversing the lateral cam-groove 17, imparts, through the arm 15, a rocking movement to the rocker-sh aft 14, which. movement is transmitted, through the bifurcated arm 18 and pin 19, to the slide 13, giving the slide 13 a lateral reciprocating movement within the dovetail slide 12.

A longitudinal slideway 20 is provided in the upper surface of the slide 13, in which a cutter-carriage 21. is adapted to slide. A connecting-rod 22 is universally pivoted at the point 23 to the under side of the carriage 21 and embraces at its other end a crank 7 ina universal joint 24. Upon the revolution of shaft 4 the crank 7 imparts, through the rod 22 a longitudinal reciprocatii'ig movement to the cuttei carriage 21, and the universal joints 24 and 23 allow of the lateral movement of the slide 13 during the reciprocation of the carriage 21.

Above and somewhat forward of the shaft 4 and parallel to the shaft 4 and the stockguide 11 is mounted in bearings 25 and 26 a shaft 27. The shaft 27 is capable of both oscillatory and longitudinal movement. A conical roller 28 is mounted perpendicularly to and carried on the right end of the shaft 27 and engages a cam-groove 29 in the periphery of the cam-groove wheel 5. A bifurcated rocker-arm 30 is mounted fast on the sh aft 27 and travels longitudinally and oscillates with. the shaft 27. Rollers 31 and 32 are carried at the extremities of arms 33 and 34 of the rocking arm 30 to engage substantially opposite points of the periph eral cam 6. The rollers 3 1 and 32 are of such length that they will not leave the face of the cam-surface with the longitudinal movement of the shaft 27. Upon. the revolution of the shaft 4 the conical roller 28 on the shaft 27, traversing the cam-groove 29 of cam-groove wheel 5, imparts a longitudinal reciprocating movement to the shaft 27, and the rocker-arm 30, fast on the shaft 27, is carried therewith. At the same time the rocker-arm 36 is given an. oscillatory or rocking movement about the axis of the shaft 27 by the rollers 31 and 32 running upon the face of the earn 6. As the rocker-arm 30 is rigidly secured to the shaft 27, the oscillatory movement of said arm will be transmitted to said shaft 27, and therefore to the conical roller 28 in cam-groove 29; but this oscillatory movement is so slight in the roller 28 that no appreciable effect is produced, the conical form of the roller 28 avoiding any binding thereof. The walls of the camgrooves 17 and 29 are inclined to correspond with the form of rollers 16 and 28.

The curvatures of the cam-grooves 17 and 29 are proportionably identical, and the relative position of the conical rollers 16 and 28 within said cam-groove is also identical. The cam-groove 17 is of less diameter than the cam-groove 29, but the bifurcated arm 18 of the rocker-shaft 14 is of greater length. than the arm 15 of said shaft, which produces a reciprocating movement in the carriage 13 exactly equivalent and. simultaneous with the reciprocating movement imparted to the shaft 27 and rocker-arm 30. It will therefore be seen that the rocking arm 30 and the carriage 13 are given reciprocating movements parallel to thestock-guide 11 and constantly remain relatively opposite one another throughout said reciprocating move ments.

Upon the upper end of the rocker-arm 30 is formed a toolbed 35, provided with T-slots 36 for the attachment of a tool-clamp 37. A projection 38 is extended in the rear of tool* bed and carries a thumb-bolt 39, which permits a fine longitudinal adjustment of the tool and takes up the thrust upon the tool. A'tool 40 is shown clamped to the toolbed 35. The shaft 27 is preferably mounted so that its axis will lie in. a horizontal plane with the center of the path of travel of the cutting edge of the tool 40 within the stock shown at 41, and the tool 40 is capable of being so clamped on the toolbed 35 that its cutting edge will describe an are partly within the stock and ending with the required depth of cut as the rocker-arm 30 reaches its limit of oscillation.

The cutter-carriage 21 is provided with a toolbed 4.2,having T-slots 43 for the attachment of a tool-clamp 44. The toolbed 42 and clamp 44 are made wider than usual to allow of an extended lateral adjustment of a tool 45 shown clamped thereon. A projection 46 extends entirely across that portion of the toolbed 42 capable of occupation by the tool and is provided with a series of thumbbolts 47, placed nearer together than the width of the butt of the tool and which con stitute means whereby a fine longitudinal adjustment of the tool may be acomplished at any point across the adjustingspace of the toolbed and provide means for taking up the thrust of the tool. This arrangement provides means for setting the tool 45 at either side of the tool 40 a distance equal to the distance between the ornaments to be carved and allows of the variation of said distance.

A slot 75 is provided in the slide 1. 3, through which the rod 22 and connections pass, said slot being of sufficient length to admit of the reciprocative movement of said rod and connections.

The elliptical gear 9 meshes with a similar elliptical gear 72, mounted on a stud 48. A miter-gear 10 is also mounted on the stud 48 and meshes with and drives a larger mitergear 49, mounted on a shaft 50, journaled in bearings 51 in an extension 52 of the frame A and bearings 53 in extensions 54 of the stockguide 11. The shaft carries a feed-roll 55, the periphery of which. extends slightly above the bed of the stock-guide 11 through an aperture 56 in said stock-guide. The shaft 50 also carries a miter-gear 57, meshing with a miter-gear 58 of the same diameter on a shaft 59, journaled in bearings in extensions 61 of the stock-guide 1 1. The shaft 59 carries a foed-roll 62, the periphery of which extends slightly without the side wall of the stockguide 11 through an aperture 63 therein. The feed-rolls 55 and 62 are of equal diameter and rotate at equal speeds, bearing on adj acent sides of the stock as it lies in the stockguide 11. The feed-rolls may be provided with roughened surfaces, if desired.

A presser-roll 73 is loosely mounted on a hinged stud 74 and adapted to press the stock into engagement with the feed-rolls. The stud 74 is hinged at one end to pivot 71 in an extension 61 of the stock-guide 11. and is removably retained at its other end by a spring-keeper 64. (Shown in detail in Fig. 9.)

The spring-keeper 64 consists of an arm provided with a central orifice 65, having internal side slots. A latch 67 is disposed in the orifice and held vertically movable by lugs 68 projecting into the internal side slots. A piston member 66, carrying the latch 67, works in hollow in the handle of the keeper 64 and is pressed downwardly by a spring 70. The stud 74 is provided with a notched extension, which is adapted to enter the orifice 65. A pivot 71 hinges the lower end of the keeper to an extension 54 of the stock-guide 11. hen the keeper is in place holding the stud 74, the spring 7 0 holds the stud down and the presser-roll 73 against the stock diagonally to the sides of the stock-guide, thus pressing the stock against both feed-rollers 55 and 62.

In Fig. 4 a diagram of the cutter mechanisms is shown on which the relative succes sive positions assumed by each part are indicated by eight ordinals, each corresponding to one-eighth of a revolution of the driveshaft represented by the large circle in Figs. 4 and 5. In Fig. 5 a diagram of the feed mechanism is shown on which the relative successive positions assumed by each part is indicated by eight ordinals, each corresponding to one-eighth of a revolution of the drive-shaft represented by the large circle.

It will be seen that the pair of elliptical gears 9 and 72 impart to the feedrolls a continuous but uniformlywarying fast and slow revolution. This movement is graphically shown by the curve in the third diagram of the time-chart. (See Fig. 12.) Referring to the first two diagrams of said time-chart, representing the movement of the cutters, and noting that the cutters enter the stock on the line 1, moving inward, the cutting stroke takes place throughout the first ninety degrees. During this time the feed, Fig. 12, is moving at a uniform slow speed. The withdrawal of the cutters from the stock between ninety and one hundred and eighty degrees on the chart takes place while the speed of the feed is still slow. (See Figs. 10, 11, and 12.) Referring now to the fourth diagram of the chart, Fig. 13, it will be seen that the lateral movement of the cutters during the time they are within the profile of the stock, or the first one hundred and eighty degrees, exactly corresponds to the feed movement during the same time, while the return movement of the cutters laterally takes place between one hundred and eighty and three hundred and sixty degrees, while the cutters are entirely without the stock. The feed of the stock during this return movement of the cutters is greatly accelerated. It is obvious in connection with this description that a uniform feed could be used and the cams made to conform thereto throughout the interval that the cutters are in the profile of the stock;

but it is preferred to use the form here shown, as it gives a slow-cutting movement and a quick withdrawal of the tool.

The feature herein illustrated of knives reciprocated in transverse or intersecting planes is claimed in m copending application, Serial No. 115,920, filed July 17, 1902.

It is obvious to one skilled in the art that the lateral movements of the tools may be brought about by mechanism actuated by a single cam member and that variously-coop.- erative organisms may be substituted for the mechanism illustrated without altering the character of the machine or departing from the spirit of my invention, and it is my desire to so protect by Letters Patent the principle involved in this invention that constructions embodying that principle and em ploying different but equivalent means for accomplishing the same shall come within the scope of the said Letters'Patent.

Referring to Figs. 4 and 5, the large circle in said figures represents the revolution of the drive shaft or pulley. For convenience I have divided said circle into eight equal parts, numbered, consecutively, from 1 to 8, and these points in the revolution of the drive-shaft have been applied to the corresponding positions of the several parts. The numeration has been started at the point when the cutters enter the stock in their cutting stroke, this point being numbered 1. The same numeration has been carried out through the time charts, illustrated in Figs. 10, 11, 12, and 13. The time-chart shown in Fig. 10 shows the curve of move ment of the horizontal cutter, while that of Fig. 11 shows the movement of the vertical cutter. It will be seen that the cutting strokes of the cutters between the points 1 and 3 occur simultaneously, and the withdrawal of the cutters from the stock between the points 3 and 5 also occurs simultaneously. The movement of the cutters between the points 5 and 1 occurs entirely without the stock. Fig. 12 shows the curve of the stock-feed, which is continuous, but of varying velocity, and is brought about by the elliptical gears. Fig. 13 represents the curve of the lateral tool-feed brought about ICO tion of the feed of the stock occurs between the points 1 and 5, which is also the period when the cutters are within the profile of the stock. Noting Figs. 12 and 13, it will be seen that the lateral tool-feed shown in Fig. 12 between the points 1 and 5 when the tools are within the profile of the stock exactly 0011- forms to the stock-feed between said points, and between the points 5 and 1 the lateral tool-feed is returning the cutters to their initial position while the stock-feed reaches its highest velocity. This arrangement tends to balance the operation of the machine and render high speed practicable.

Referring to Fig. 7, the vertical tool having a shorter path and a lower velocity than the horizontal tool reaches the profile of the stock simultaneously with the horizontal tool and also reaches the extreme limit of its cutting stroke at the same time as the horizontal tool reaches its limit of cutting stroke. It is obvious that other means than the elliptical gears may be employed to give a varying velocity to the stock-feed and give a feed curve dissimilar to that shown in Fig. 12 but when such a change is brought about the lateral-tool-feed curve should correspond to the feed curve between the points 1 and 5 or such other points as embrace the movement of the cutter within the profile of the stock.

Having described my invention, I claim 1. In a carving-machine, the combination with stock-feeding means, of a reciprocatable cutter and an oscillatable cutter, and means for reciprocating said cutters together longitudinally of the stock.

2. In a carving-machine, the combination of a reciprocatable cutter and an oscillatable cutter, and means for simultaneously translating said reciprocatable cutter through a circuitous plane path and said oscillatable cutter through a circuitous path in the curved surface conforming with the oscillations of said cutter.

3. In a carving-machine, the combination of a variable longitudinal feed mechanism, cutters movable to incise the stock and movable with the longitudinal traveling stock during their operation, and means for actuating said mechanism and said cutters.

4. In a carving-machine, the combination of a continuous stock-feed having a relatively low velocity during the action of the cutter and a relatively high. velocity during the inaction of the cutter, a cutter, and means for longitudinally moving said cutter within and without the profile of the stock and simultaneously imparting a lateral movement to said cutter in the direction of and at corresponding velocities with the stock-feed during the course of travel of said cutter within the profile of the stock, and returning said cutter to its initial position during its course of travel without the profile of the stock.

5. In a carving-machine, the combination of a continuous fluctuating stock-feed with a stock-guide, a plurality of cooperative cutters, and means for imparting to said cutters simultaneous alternate movements in per pendicular planes to said stock-guide, during portions of which movements said cutters are within the profile of the stock and during other portions are without said profile, and simultaneous reciprocating movements parallel with said stock-guide and constant with the feed, the slower movement taking place at the movement of the cutters within said profile, each of said cutters being formed for cutting a portion of the design upon the stock.

6. In a carving-machine, the combination of a continuous fluctuating stock-feed with a stock-guide, a cutting member, and means for simultaneously oscillating said member in a plane perpendicular to said stock-guide and reciprocating said member parallelly of said stock-guide.

- 7. In. a carving-machine the combination of a continuous stock-feed having a varying velocity, a stock-guide, a power-shaft parallclly mounted to said stock-guide, a slide parallelly reciprocable to said stock-guide, a carvingtool adjustable upon said slide, means carried by said power-shaft for reciprocating said slide parallel to the stock-guide, and means to reciprocate the carving-tool transversely of the slide and at speeds corresponding with the speed of the movement of the stock-feed, whereby its working stroke will take place at the period of slowest move ment.

8. In a carving-machine the combination of a continuous stock-feed having a varying velocity, a stock-guide, a power-shaft parallelly mounted to said stock-guide, a table parallelly reciprocable to said stock-guide, a cutter adjustable upon said table, and a lateral cam member carried between said shaft and table for imparting a reciprocating movement of varying velocity to said table and timed relative to the feed velocity for imparting to the cutter its working stroke during its slowest movement and during the slowest feed movement.

9. In a carving-machine the combination with a continuous stock-feed having a varying velocity, of a stock-guide, a power-shaft parallelly mounted to said stock-guide, a table parallelly reciprocable to said stockguide, a cutter adjustable upon said table, a lateral cam member carried by said shaft, and a rocker-arm engaging said cam member and connected to the table for imparting a reciprocating movement thereto and timed relative to the feed velocity for imparting to the cutter its working stroke during its slowlCC LII

est movement and during the slowest feed movement.

10. In a carving-machine, a stock-guide, a table parallelly reciprocable to said stockguide, a cutting member operably mounted upon said table and perpendicularly reciprocable to said stock-guide, a power-shaft parallelly mounted to said stock-guide, a crank member carried by said shaft, and a rod connecting said crank member and cutting member and universally articulated thereto.

11. In a carving-machine, the combination of a frame, a stock-guide rigidly mounted on said frame, a table slidably mounted on said frame in guides parallel to said stockguide, a tool-carriage slidably mounted in guides on said table perpendicularly to said stock-guide, a power-shaft mounted in said frame parallel with said stock-guide, a crank member carried by said shaft, and a rod connecting said crank member and said tool-carriage and universally articulated thereto, to impart a reciprocating movement to said tool-carriage from said crank at any position of said table.

12. In a carving-machine, the combination of a frame, a stock-guide rigidly mounted on said frame, a table slidably mounted on said frame in guides parallel to said stockguide, a tool-carriage slidably mounted in guides on said table perpendicular to said stock-guide, a power-shaft mounted in said frame parallel with said stock-guide, a crank member carried by said shaft, a rod connecting said crank member and said tool-carriage and universally articulated thereto, a lateral cam member carried by said shaft, a rockershaft mounted in said frame, a rigid arm on said rocker-shaft engaging said cam member to impart a rocking movement to said shaft from the lateral inclination of said cam member, and a rigid arm on said rocker-shaft engaging with said table, transposing the rocking movement of said shaft to a reciprocating movement in said table.

13. In a carving-machine, the combination of a stock-guide, a rock-shaft parallelly reciprocable to said stock-guide, a rigid arm on said shaft, and a cutting member carried by said arm to oscillate therewith through a path lying in an arc intersecting said stockguide.

14. I11 a carving-machine, the combination of a stock-guide, a cutting member oscillatable in a moving plane perpendicularto said stock-guide, and mechanism for causing said cutting member to penetrate the stock at predetermined regular intervals.

15. In a carving-machine, the combination of a stock-guide, a cutting member reciprocatable parallelly to said stock-guide and oscillatable in a plane perpendicular to said stock-guide, and mechanism for causing said cutting member to penetrate the stock at predetermined regular intervals.

16. In a carving-machine, the combination of a stock-guide, a cutting member, means to simultaneouslyreciprocate said cutting member parallelly to said guide and to oscillate said cutting member in a moving plane perpendicular to said stock-guide at predetermined intervals.

17. In a carving-machine, the combination of a frame, a stock-guide on said frame, a power-shaft mounted in said frame parallel to said stock-guide, an oscillating cutting member reciprocatable parallelly to said stock-guide, a peripheral cam member on said shaft engaging and oscillating said cut ting member, and a lateral cam member on said shaft engaging and reciprocating said cutting member simultaneously with the oscillation thereof.

18. In a carving-machine, the combination of a stock-guide, means for feeding the stock at varying velocities, a translationallymovable cutter, and connected driving means for said feed and cutter; said driving means moving said cutter within the profile of the stock during the low-velocity movement of said stock-feed.

19. In a carving-machine, the combination of a stock-guide, means for feeding the stock at varying velocities, a plurality of translationally-movable cutters, and connected driving means for said feed and cutters, said driving means being constructed for moving said cutters within the profile of the stock during the low-velocity movement of said stock-feed.

20. In a carving-machine, the combination of a fluctuating stock-feed, a plurality of simultaneously-actuated translationallymoving cooperative cutters, and connected driving means for said feed and cutters; said driving means being constructed for moving said cutters within the profile of the stock in conformity with. and during the relatively low velocity of the feed.

21. In a carving-machine, the combination of a frame, a stock-guide on said frame, a power-shaft mounted in said frame parallel to said stock-guide, a stock-feed driven at a relatively low velocity during the action of the cutter and a relatively high velocity during the inaction of the cutter from said powershaft, a plurality of tool-carriers parallelly reciprocable to said stock-guide and shaft, and cam means on said shaft giving said carriers a forward movement coincident with the feed and a return movement, and means for reciprocating said tool-carriers transverse the stock-guide.

22. In a carving-machine, the combina tion of a frame, a stock-guide on said frame, a power-shaft mounted in said frame parallel to said stock-guide, a stock-feed driven at varying velocities from said powershaft, a plurality of tool-carriages parallelly reciprocable to said stock-guide and shaft, and cam means on said shaft giving said carriages a l forward movement coincident with the lowl velocity feed and a return movement, and. l means for reciprocating said tool-carriers transverse the stock-guide.

23. A carving-machine com n'ising a cutting member, means for effecting alternate fast and slow but continuous feed movements of the stock, and means for giving the cutting member a movement coincident with that of the stock during the cutting operation, and for moving the cutter back along the stock to normal position after each cutting operation, and means for reciprocating said tool-carriers transverse the stock-guide.

24:. A carving-machine comprising a cutting member, means for effecting alternate fast and slow but continuous feed movements of the stock, and means for causing the cutting member to move coincidently with the stock during the slow movement thereof, and to move back along the stock during the fast movement of the latter, and means for reciprocating said. tool-carriers transverse the stock-guides.

25. A carving-machine comprising means for feeding the stock continuously, an arm, a carving-tool thereon, means for vibrating said arm, and means for causing said arm to travel coincidently with the stock during the cutting operation.

26. A carving-machine comprising means for feeding the stock crmtinuously, a carvingtool, means for moving said tool into and out of the stock, and means for reciprocating said tool longitudinally of the stock in coincidence with said stock (lu ring engagement therewith; said stockfeeding and tool-reciprocating means including a variable speed mechanism, having a relatively low speed during the engagement of the tool with the stock.

27. A carving-machine comprising means for feeding slowly during the operation of the carving-tool and fast during the inopera-tion thereof but continuously, an arm, a carvingtool thereon, means for vibrating said arm, and means for reciprocating said arm longitudinally of the stock.

28. A carving-machine of the class de scribed, comprising cooperative cutting members mounted to penetrate the stock from different directions, mechanism. for feeding the stock altcri'iately fast and slow but continuously, and means for reciprocating said. cutting members longitudinally of the stock so that during the stoclvpenetrating operation they move coincidently with the stock.

29. A carving-machine of the class described, comprising cooperative cutting me mbers mounted to penetrate the stock from different directions, an arm. upon which at least one of said cutting members is mounted, mechanism for feeding the stock alternately fast and slow but continuously, and. means for reciprocating said cutting members longitudinally of the stock and so that during the stock penetrating operation they move coincidently with the stock.

30. A carving-machine of the class de scribed, comprising cooperative cutting members mounted to penetrate the stock from different directions, means for reciprocating said cutting members along the stock, and mechanism for feeding the stock slowly during the cutting operation and rapidly during the backward movement of the cutting members along the stock; said stock-feed ing and cutter reciprocating mechanism being so connected that the cutting members move coincidcntly with. the stock during'the cutting operation.

31. A carving-machine of the class described, comprising an arm, a cutting-tool thereon, a cooperative cutting member mounted to penetrate the stock from a different direction, variable-movement mechanism for reciprocating the cutting members longitudinally of the stock, and variable-movement mechanism for feeding the stock; said variable-movement mechanisms operating at relatively slow speeds during the operation of the cutting members.

32. A carving-macl'iine comprising a stockfeed, of variable-speed. movement, an arm, a cutter carried thereby, means for reciprocating the arm for moving the cutter along the path of the stoclefeed and in coincidence with the fluctuations of the feed, and means for vibrating the arm for moving the nutter into and out of the said path, the slower feed movements taking place during the time the cutter is in said path.

A carving-machine comprising a plurality of cutters, means for causing the cutters to penetrate the stock from different directions, means for reciprocating the cutters along the stock coincident with the stockfeed, and feeding means having a relatively slow speed during the cutting operation of the cutters.

A carving-machine comprising a plurality of cutters, means for moving the cutters in. different directions into and out of the stock means for reciprocating the cutters along the stock, comcident with the stockfeed, and means for effecting a continuous feeding movement, having a relatively slow speed during the operation of the cutters.

35. A carvin'ganachine comprising a plu rality of cutters, each of said cutters being fOI'ITlGd for cutting a portion of the design upon. the stock, means for causing the cutters to penetrate the stock from different directions, means for reciprocating the cutters together along the stock coincident with the stock-feed, and means for feeding the stock, having a relatively slow speed during the operation of the cutters.

36. A carvingmachine comprising an arm, a cutter thereon, means for vibrating said arm, a second cutter, means for causing the latter to penetrate the stock from a different direction, means forreciprocating the cutters together along the stock, and means for feedin the stock each of said cutters being formed for cutting a portion of the design upon the stock.

37. A carving-machine comprising a plul rality of cutters, means for causing the cutters to penetrate the stock from different directions, means for reciprocating the cutters along the stock coincident with the stockfeed, and feeding means having a relatively slow speed during the operation of the cutters, said cutters being mounted at intervals in the direction of the feeding movement, so that one cutter may supplement the cut previously made in the stock by the other.

38. A carving-machine comprising a shortstroke vibratory arm, a cutter thereon, a longstroke cutter, means for moving the latter in different directions into and out of the stock, means for reciprocating the cutters together along the stock, and feeding means; each of said cutters being formed for cutting a portion of the design upon the stock, and being mounted at intervals in the direction of the feeding movement, so that one cutter may supplement the cut made in the stock by the other at a previous feed.

39. A carving-machine comprising a plurality of cutters, means for causing the cutters to penetrate the stock from different directions, means for reciprocating the cutters together along the stock coincidentwith the stock-feed, and means for feeding the stock continuously and at a relatively slow speed during the operation of the cutters said cutters being mounted at intervals in the direction of the feeding movement, so that one cutter may supplement the cut previously made in the stock by the other.

40. In a carving-machine, the combination of a stock-guide, a plurality of cutting members, means for reciprocating said members longitudinally of the stock, and means for oscillating at least one cutting member into and out of the stock; said cutting members being so mounted that each forms a part of the design cut in the stock.

41. In a carving-machine, the combination of a stock-guide, a plurality of cutting members, means for reciprocating said members longitudinally of the stock, and means for oscillating at least one cutting member into and out of the stock; said cutting members being so mounted that each forms a part of the design cut in the stock, and one being mounted so that it may supplement the cut previously made by the other.

42. In a carving-machine, the combination of a plurality of cooperative tools, means for causing them to penetrate the stock, means for reciprocating them along the stock coincident with the stock-feed, and feeding means having a relatively slow speed during the op eration of the tools.

43. In a carving-machine, the combination of a plurality of cooperative tools, means for causing them to penetrate the stock, means for reciprocating them along the stock coincident with the stock-feed, and feeding means having a relatively slow speed during the operation of the tools; one of said tools being formed and mounted so as to supplement the cut made by another tool at a previous feed.

44. In a carving-machine, the combination with stock-holding means of a pivoted arm mounted transversely of the stock, a carving tool upon the end of said arm and rigid therewith, means for effecting between the stock and said arm a to-and-fro movement lengthwise of the stock, and feeding means.

45. In a carving-machine, the combination with stock holding and feeding means, of an arm mounted upon an axis which extends longitudinally of the stock, a carving-tool upon the end of said arm, and means for moving said arm to and fro along the stock.

46. In a carving-machine, the combination with stock holding and feeding means, of an arm mounted upon an axis which extends longitudinally of the stock, a carving tool upon the end of said arm, and means for moving said arm to and fro along the stock coincident with the stock-feed and simultaneously vibrating said arm to cause the tool to penetrate and withdraw from the stock.

47. In a carving-machine, the combination with stock holding and feeding means, of an arm mounted upon an axis which extends longitudinally of the stock, a carvingtool upon the end of said arm, means for moving said arm to and fro along the stock and simultaneously vibrating said arm to cause the tool to penetrate and withdraw from they stock, and means for feeding the stock relatively slowly during the operation of the tool.

48. In a carving-machine, the combination with means for feeding the stock continuously but relatively slowly during the operation of the carving-tool, of an arm mounted upon the axis which extends parallel with the feeding movement of the stock, a carving-tool mounted upon the end of said arm, means for causing said tool to penetrate and withdraw from the stock, and a cooperating carving-tool.

49. In a carving-machine, the combination with feeding means, of a slide, means for moving said slide to and fro along the stock, a second slide mounted upon the first and movable transversely thereto, a carving-tool upon said second slide, an arm mounted up on an axis which extends longitudinally of the stock, said arm being movable to and fro co incidently with the first-mentioned slide, and a carving-tool mounted upon the end of said arm.

LOO

IIC

50. In a carving-machine, the combination along the stock, an arm extending from said With feeding means, of a slide, means for moving said slide to and fro along the stock, a second slide mounted upon. the first and movable transversely thereto, a cutting-tool upon said second slide, an arm mounted upon an axis which extends longitudinally of the stock, said arm being movable to and fro coincidently with the first slide, and a cutter mounted upon the end of said arm so as to complement the cut made by the first-mentioned tool at another feeding movement.

51. In a carving-machine, the combination. With continuously-variable feeding means, of a member mounted for a sliding movement longitudinally of the stock, means for reciprocating said member along the stock, an arm extending from said member transversely to the stock and capable of pivotal movement, means for vibrating said arm operatively during the relatively sloW speed of the feeding means, and a cutter mounted upon the end of said arm.

52. In a carving-machine, the combination with means for feeding the stock relatively slowly during the operation of the cuttingtool, of a slide, means for moving said slide to and fro along the stock, a second. slide mounted upon the first slide, means for reciprocating said second slide transversely of the stock, and a cutting-tool mounted upon said second slide.

In a carving-machine, the combination. with fast-retracting and slow advancing stock-feeding means, of a member mounted for a sliding movement longitudinally of the stock, means for reciprocating said member sliding member transversely to the stock and capable of pivotal movement, means for vibrating said arm, and a cutter mounted upon the end of said arm.

In a carving-machine, the combination with fast and sloW stock-feeding means, of a slide, means for moving said slide to and fro along the stock, a second slide mounted upon the first slide, means for reciprocating said second slide transversely of the stock, a cutting-tool mounted upon said second slide, a pivotally mounted arm extending transversely of the stock and also movable along the stock in unison With the first slide, a cutting-tool mounted upon the end of said arm, and means for vibrating said arm.

In a carving-machine, the combination with fast and slow stock-feeding means, of a Sli e, means for moving said slide to and fro along the stock, a second slide mounted upon the first slide, means for reciprocating said second slide transversely of the stock, a cutting-tool mounted upon said second slide, a pivotally mounted arm extending transversely of the stock and also movable along the stock in unison With the first slide, a cutting-tool mounted upon the end of said arm, and means for vibrating said arm, one of said cutting-tools being set to supplement the cut made by the other tool at a previous feeding movement.

FRANCIS H. RICHARDS.

Witnesses:

FRED. J. DOLE, JOHN OQSEIFERT.

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