US1418028A - Pattern-controlled woodworking machine - Google Patents

Description

A. P. SMITH AND W. E. SHOCKLEY.

PATTERN CONTROLLED WOGDWORKING MACHINE.

APPLICATION HLED MAR 3. I921 1 a 2 r M 2. W7. M 1 m gw ,MQH 0H CH 34 PE Yn -flw m kw .w m. m

A; P. SMITH AND W. E..SHO CKLEY. PATTERN CONTROLLED wooowoaxme MACHINE.

APPLECATION FILED MAR; 3, 1921.

' Patented May 30, 1-922.

1 SHEETS;$HEET 2.

A. P. SMITH AND W. E. SHOCKLEY.

PATTERN CONTROLL'ED WOODWORKING MACHINE.

APPLICATION FILED MAR. 3. 192i.

1,418,028, I ed M y30,1922.

I SHEETS-SHEET 3- A. P. SMITH AND w. E. SHOCKLEY.

PATTERN CONTROLLED WOODWORKING MACHINE.

' APPLICATION FILED MAR. 3, 1921. 1,418,028. t d ay 30,1922.

' SHEET 4.

7 SHEETS 5 q M 00 ,U Ww D U n fi 0r 3 J 7 v 5 v y l 00 M fi U 00 o |||O H1 T 1. 3 {n #1 s M I- fi W i fl/ b 0/ Z fi v 7 L 0 0/ h 1 W. W m 7 3 M m n 3 [\J. q/v b 4 N/ n w Wu- A. P. SMITH AND w. E. SHOCKLEY. PATTERN CONTROLLED WOODWORKING MACHINE.

APPLICATION FILED "MR. 3. 1921. I 1,418,028. Patented May 30, 1922.

7 SHEETS-SHEET 5. v

-A. P. SMITH AND W. E. SHOCKLEY.

PATTERN CONTROLLED WOODWORKING MACHINE.

APPLXCATION FILED MAR 3. 1921.

1,41 8,028. tented May 30, 1922.

'1 SHEETS-SHEET 1.

,AL'BERT P. SMITH, 0F OMBA, AND WILLIAM E. SHOCKLEY, OF HEBROII, MISSOURI.

orarrnnn-oonrnoririnn woonwonxrne MACHINE nuance;

To all whom it may concern:

Be it known that we, ALBERT P. SMITH and lVitmAM E. SnookLsr, citizens of the United States. residin at Omba and liebron, respectively, in the county of Douglas and State of Missouri, have invented certain new and useful improvements in Pattern- Controlled /Vood Working Machines, of which the following is a specification, refer once being had to the accompanymg draw- This invention relates to wood working machines, and particularly to machines for shaping wagon spokes, a handles, singletrees, and other regularly or irregularly formed objects.

The general object of the invention is to provide a machine of this character in which a series of cutters are urged toward or from the axis the rotating work by means of a template or jig, the template or jig and the work being movable together with relation to the cutters.

It further object is to provide a machine of this character wherein a plurality of cutters are used, each cutter operating over a certain section of the work so that. the longitur'linal movement of the work relative to the cutters is relatively small.

And a further object is to provide a ma chine of this character wherein the work is roughed outby a series of saws, each of these saws being followed by a cutting head which trims the work down to its proper proportions and leaves the surface of the work entirely smooth.

further object is to provide a mechanism-of this character wherein a template is used and wherein the saws and finishing cutters are mounted for independent.movement toward or from the airis of the work and the template is engaged by a series ofrollers bearing against the template, these rollers being mounted for oscillating movement and being operatively connetced to the saw and cutter supports so that the position ofthe rollers is controlled by the template and the position of the saws and cutters is controlled by said rollers.

Another object is to provide in a machine Specification of LetterslPatent. Patented ,lVIay 30 1922, Application filed March 3, 1921. Serial No. 4A9,3:78.

of this'character means preventing the cutters from contacting with the work until the saw associated with each cutter has cut a kerf of suflicient width to permit the cutter to move inwardinto contact with the surface cut by the saw.

Still anotherobject is to provide a carriage upon which the work and template are mounted for longitudinal movement, and provide improved means whereby. this carriage may be caused to travel longitudinally to carry the work across the cutting edges of the saws and cutters and the controlling rollers over the surface of the template, and in this connection to provide means whereby the carriage may be readily connected operatively toxa feed screw and is automatically disconnected therefrom when the work has travelled a sul-licient distance to have caused the cutters to act in their re spective zones of action.

A; further object is to provide improved means for supporting the work androtat- :ing it, and provide means'whereby the individual cutters and saws may be adjusted relative to their individual controlling rollers.

Other objects relate to the details of construction and the arrangement of parts as will appear more fully hereafter.

Our invention is illustrated in the accompanying drawings, wherein s Figure l is a plan view of a wood working machine constructed in accordance with our invention;

Figure 2 is front elevation thereof;

'F'igure 3 is an end view looking toward the right hand end of the machine in Figure 2; l

Figure 4 is a left hand end elevation;

Figure 5 is a section on the line 55 of Figure 2; v I

Figure 6 is an elevation of the tail stock or mandrel for the work;

Figure 7 is a section on the line7-7 of Figure 6; v

Figure 8 is a sectional View of the head stock for the work; I v

Figure 9 is a fragmentary elevation of a portion of the supporting frame and the carriage showing the means whereby the carriage is operatively engaged with the screw-threaded shaft and showing in elevation the wedge 96, the shafts 19, 23 and 81 being iii-section;

Figure 10 is an enlarged face view of the yoke 78;

Figure 11 is a section on the line 11-11 of Fig. v10; 2

Figure 12 is a side elevation of the wedge 95,, the shafts 28 and 81 being in section;

Figure 13 is a front elevation of this wedge and the shaft 81;

Figure 1 1. is a sectional View of the head stock or mandrel for the pattern,

Figure 15 is a sectional view of the tail stock therefor;

Figure 16 is a sectional view through the 4 sliiftable sprocket wheel '88;

bars 10, the longitudinally extending frame bars 11, the legs 12, the longitudinal braces 13, and transverse braces 14 disposed below the frame bars 10 and 11. This frame may be made in any suitable manner and is prefe'rably formed of separate pieces bolted together. Mounted in bearingsin the lower portion of the frame and illustrated as mounted in bearings on the transverse bars shaft 16, however,

14] are the longitudinally extending shafts t5 and 16. The shaft 15 is fixed from rot-ation by means of the set screws 17 or any other suitable means for this purpose. The rotates and carried upon it "the belt wheel 18. shown most clearly in.

l igure 4;. Mounted in suitable bearings carried by the transverse frame bars 10 is a shaft 19 which is screw-threaded for a portion of its length. as at 20, and which at one end carries the band wheels 21. and 22 of different diameters.

Also mounted in suitable bearings upon the transverse frame bars 10 is a shaft 23 carrying atone end the band wheels 24 and 25, the band wheel 24 being of relatively large size to correspond to the relatively small band wheel 22, and the band wheel 25,

being ofrelatively'small size to correspond to the relatively large size of the band wheel 21.. An endless band 26 extends over these band wheels and drives the band wheels 22 and 24. or 21 and 25.

The opposite end of this shaft 23 carries upon it the band wheel 27. From this band Wheel passes a belt 28 to a band wheel 29 on shaft 16. The band wheel 18 takes power from any suitable sourc by means of a belt over the band wheel 18. Thus it will be seen that power is transmitted from the band wheel 29 to the band wheel 27 and thus to the shaft 23 and from the shaft 23 by means of the band wheels 2 1 or 25 to the band wheels 21 or 22 on screw shaft 20.

Mounted for sliding movement upon this fixed supporting frame is a carriage consisting of a plurality of frame members 30, 31,

32 and These frames are approximately rectangular in side elevation and are connected at their four corners by longitudinally extending rods Set, 36 and 37, the

frame members being engaged with these rods by means of set screws, bolts or any other suitable clamping means. Certain of the frame members have rearwardly bowed ends while certain other framemembers have the vertically extending portions 3%) and 10. The frame formed by these several frame members is slidingly mounted at its forward lower corner upon the longitudinally extending shaft 23 and the rear portion of the frame carries rollers t2 which bear upon a longitudinally extending rail 13 carried by hangers 44 attached to the cross pieces 10 of the fixed frame. Thus it is obvious that the movable frame disposed upon the fixed frame can be shifted. longitudinally upon the fixed frame. Mounted upon the vertical frame members 39 at opposite ends of the movable frame are the chucks or other rotatable supports L5 and 46 for a. rotatable jig, form or template a7 which is-mounted for rotation upon the churk 15 and with the chuck 4:6. The hand wheel-e8 constitutes means whereby the chuck may be shifted into or out of engagement with the form 17 andto hold this in engagement with the chuck 46. The

chuck f6 has a longitudinally extending shaft 4&9 whereby power may be transmitted to the shaft to rotate the form 17. Mounted upon the frame members 10 are the chucks 50 and51 designed for rotatably supporting the work 52 in parallel relation to the form or jig 47. The chuck 50 has a shaft 53 whereby it may be rotated, and the chuck 50 is rotated from the shaft or spindle 49 of chuck 46 as will be later stated.

Mounted at intervals upon the shaft 16 for oscillation thereon as an axis are a plurality of upwardly extending saw and cutter supporting arms 54. the lower ends .of which are forked or bifurcated, as at 55, and provided with bearings 56 which fit loosely around the shaft 16. The shaft 16 carries upon it a plurality of alternate sprocket and belt wheels, the belt wheels being designated 57 and the sprocket wheels 58. The upper end of each arm is forked or bifurcated, as

- wheels 58 are connectedby sprocket chains to the sprocket wheels 63. Thus the several shaft sections 61 are driven from and by the shaft 16. Each of the arms 54 is-independently oscillatabl'e about the shaft 16 as an axis, and it is to be noted that the saws 65 are larger in diameter than the cutter heads 64:, while, of course, the cutter heads are thicker than the saws.

Mounted upon the shaft-l5 for oscillation thereon are a plurality of upwardly extending arms 66 and 66 which are forked at their upper ends, each of these arms carry ing a short shaft section 67. and these arms 66 and 66 corresponding in number and position to the arms 54;. Eachof theshaft sections 67 rar'ries either a relatively large rotatable disk 68 corresponding to the saw 65 or a relatively smaller and relatively thick disk69 corresponding in diameter, position, etc, to the cutter heads 64. The

shaft sections 67 which carry the relativelylarge and relatively thin rollers 68 are opera tively connected to these shaft sections 6'1 which carrythe saws 65 and the shaft sections 67 which carry the relatively smaller but thicker rollers 69 correspond with and i control the movements of the cutter heads (i l. Each shaft section 67 to this end has an upwardly extending arm 7 O forming a prolongation of the corresponding arm 66 or 66 land this portion 70 is connected by a connecting rod 71'with ail-upward extension I 72 of the corresponding arm 54. This, connecting rod 71 is formed in two sections, as illustrated most clearly in Figure '1, con nected by means of a turn buckle 7 3 whereby the sections may be adjusted. 'Each of the arms 66 has an inwardly protuberant portion Z) for a purpose to be later noted.

The rollers 68 and bear against the form 47, while the saws 65' and the cutter heads 6 L are designe'd to bear against the work. and it will be obvious that inasmuch as these rollers 68 and 69 bear against the form 47 that the saws and cutter'heads will.

be shifted toward. or from the aXis of the work 52 in correspondence'with the shape of the form, pattern or 47. Springs 7;: are attached to the main or stationary frame and to the arms 54 and urge the cutter heads and saws against the work.

For the purpose of causingthe carriage to movelongitudinally to thereby carry the work 52 transversely of the several saws and Depending'from that end of the carrierv frame adjacent the pulleys 2i and 22 are the hangers 7 6 whose lower ends are formed with eyes; Slidingly' supported in these eyes is asliding member 77, themiddle portion of this member being enlarged, as at 78, and formed with an opening having approximately the form of a keyhole slot (see Figures 9 and 16). The portion a of this slot is relatively large,- while the portion 6 has a diameter the same as the diameter of the screw-threaded shaft 19 and is formed with interrupted screw-threads 0 to engage the screw-threads'EZO of this shaft. ,il hen this slide 77 is shifted in one direction the screwthreaded wall of the portion 5 is engaged with thescrew-threads 20. When it is shifted in the opposite direction, the scre .v--threaded shaft 20 becomes operatively disengaged from the serewrthreads of this slide 77. Thuswhen the slide 77 is engaged with the screw-threads 20, it is obvious that the rotat ing shaft 19 will act to shift the carrier longitudinally. upon the lower or fixed frame and that when the slide 77 isdisengaged fromthe screw-threads 20, the carrier will remainstationary" For the purpose of shifting this slide 77, we connect one end of the slide with a link 7 9. .which in turn is connected to an arm 80 opcratively connected to a rock shaft tll, as will be hereafter stated. This rockshaft has thereon a lever or handle 82. His olovious now that when this handle 82 is depressech it will cause the operative engage,

out of i soperative screw-threaded engageinent wi but so long as the lever 82 is held. depressed. the carriage willhave operative engagement with the screw-threaded shaft 19 and will be caused to travel from one end of-the machine toward the other.

h the screw-threads of the shaftlQ.

frame of the machine, but is approximately In order to return the carriage to its initial position after it has traveled a predetermined distance under the action of the screwthreaded shaft 19, we provide a relatively strong, coiled spring 85 which is connected by a cable 86 to the carriage, this cable passing over a pulley 87. When the carriage travels in one direction under the action of the screw-threaded shaft 19, this spring placed under tension, but as soon as the slide 7?, which constitutes a clutch is freed from its engagement with the screw-threaded shaft, then the carriage is free to move back to its initial position under the action of this spring 85.

The shaft 23 carries upon it between the frame members 32 and 33 of the carrier a sprocket wheel 88 which is loose on the shaft. Over this sprocket wheel. passes a sprocket chain 89 which engages over a sprocket wheel 90 mounted upon the spindle 4-9 of the chuck L6, and also mounted upon this spindle 4.0 is a sprocket whee] 91 over which a chain 92 passes to a sprocket wheel 93 on the spindle 53 of the work chuck 50 (see Figure 4;). Thus power is transmitted through the shaft 23 to the pattern chuck 4L6 and pattern 4:? and from the spindle of the pattern chuck 46 power is transmitted to the chuck for the work. Thus the work and the pat-tern rotate together and at the same rate of speed. As before remarked, the sprocket wheel 88 is loose on shaft 23 but the shaft 23 is provided with a longitudinally extending key or spline 9t. and. the sprocket wheel is provided with a corresponding keyway.

It is necessary to longitudinally shift the carriage a certain amount, as for instance a fraction of an inch, in order to bring the sprocket wheel 88 into operative engagement with the spline 94: (see Figure 16). and to this end we mount upon the shaft 81. as illustrated in detail. in Figures 9 and 12. cam 95 which oscillates with the shaft 81.

,This is formed with a wedge-shaped prolongation 96 which, when the shaft 81 is oscillated in one direction by means of the lever 82. engages between the end frame of the carrier and between the end frame of the end member of the supporting frame. before stated the arm 80 is operatively connected to the shaft 81 and the means connecting the arm 80 to the shaft 81 is illustrated in Figure 2. It is obvious that the link 7 9 must travel with the carrier and that the arm 80, therefore. must travel with the carrier, and to this end the shaft 81 is longitudinally grooved, as at 97, and the arm 80 is formed as a band. embracing this shaft 81 and sliding thereon (Figure This arm 80 is formed with a lug 98 which engages in the groove 97 so that as the shaft 81 is oscillated in either direction, the arm 80 will be oscillated also. In order to cause the travel of this arm 80 along the shaft 81, we

provide a U-shaped yoke 98 which is forked at one end to embrace the shaft 81 and at its opposite end is attached to the lower end of the adjacent portion of the carriage frame, as 99. The arm 80 is disposed between the two legs of this U-shaped yoke, as ill ustrated most clearly in lligure 2, and thus as the carriage travels in either direction the arm 80 and the link 7 9 will also travel with the carriage. Y

When it is desired to manually start the carriage in a direction to cause the saws and cutter heads or jointers to act upon the Work, the lever 82 is depressed. This, by means of the wedge 96, causes the sprocket wheel 88 to engage with the key 94: and thus to rotate with the shaft 28. At the same time the slide 77 is shifted to cause its crewthreaded portion to engage with the screwthreaded shaft 20 and the carriage will travel toward the left in Figure 2. This carriage will travel in this direction until it is automatically stopped and we have provided means for releasing the engagement between the screw-threaded slide and the shaft 19. which mechanism is as follows:

Sliding upon the shaft 81 is a collar 100. and attached to the extremities of the frame bars 32 and of the carrier is a longitudinally extending rod 101. which, adjacent one extremity, is attached to the collar 10( and beyond this collar is deflected and formed with a pointed or wedge-shaped head. 1093. Mounted upon the shaft 81 is a ratchet wheel 103 having one ratchet tooth 104: (Figure 18). and pivotally mounted upon the inner face of one end of the supporting frame is alatch 1.05 which spring actuated so that the tooth on this latch is urged against the smooth periphery of the ratchet wheel 103. Now at the time that the lever 82 is depressed. the shaft 81 is oscillated in a direction to draw the rods 83 toward the front of the machine against the action of the springs 84: sothat these springs are placed under tension. When the shaft 81 has been ro--. tated to a sufficient degree, the tooth of the latch 105 drops into the ratchet recess an and this holds the shaft 81 from reverse movement under the action of the springs 84. When, however, the carriage hasmoved a predetermined distance. the pointed head.

102 enters between the latch 105 and the periphery of the ratchet wheel 103 and shifts the latch out of engagement with the ratchet wheel, and as soon as the ratchet wheel is released, the shaft 81 rotates in a reverse direction .under the action of the springs 84-. This reverse rotation of the shaft 81, of course, acts to withdraw the slide 77 from engagement with the screw-threaded shaft 19 so that the carriage is freed and immediately returns under the action of the spring 85 to its initial position. The rod 101 carrying the head 102 can be adjusted and thus the travel of the carriage under the action of the screw 20 can be adjusted. As the carriage moves rearwartil. of course, the rollers 69 riding over the face of the form or pat tern 47 cause the saws andjointers or cutter heads to move away from the axis of the work, as will be obvious from the drawings.

As the means whereby the work may be supported, we have provided. as previously stated, the chucks or stocks 51. and The head stock 50 is formed with prongsfor in sertion into the end of the work. The tail stock 51 is slidingly mounted, as illustrated in Figure 6 in suitable guides 106 and is preferably made in two sections, one of these sections 0 being swivelled to the other section (Z so as to permit the rotation of the tail stock relative to the section (Z, to cause the common longitudinal movement of the sections and. c. For the purpose of quickly withdrawing the tail stock from the work, we mount upon the vertically extending portion 40 of the carriage. a ratchet rack 107 formed with ratchet teeth upon its periphery and pivot to this rack alever 108, this lever having an arm 109 which is connected by a link 110 to the section (Z of the tail stock. This lever 108 is provided with a pivoted latch 111. which is connected to the usual hand grip 112 which, when it is pressed against the handle, acts to retract the latch. The latch is urged into engagement with the ratchet teeth of the ratchet sector 10'? by means of the spring 113. By this means it is possible to quickly withdraw the tail stock from engagement with the work to permit the removal of finished work and the insertion of new work. It will be understood, of course, that the arm 109 is mounted upon the shaft 114 upon which the lever 108 mounted but that the arm 109 might be attached to the lever itself. The head stock spindle 53 is mounted in a suitable step hearing 115 which has screw-threaded engagement with a supporting member 116 attached to the adjacent frame bar 33, as illustrated in Figure 8.

Carried by extensions of the frame bars 30 and 32 is a longitudinally extending inclined bar 117 which is adjustably held by a bolt 118 at one end to the frame bar 30 and at its opposite end is adjustably mounted upon the frame bar 32 by means of a bolt 119, these bolts extending through slots 120 in the extension of the frame bar. This longitudinally extending inclined bar 117 carries upon it a plurality of rearwardly projecting blocks 121 designed to coact with the rollers 69 which control the movements of the cutter heads or jointers 64. When the carriage is in its initial position, these pro.- jecting members 121 are disposed against the arms 66 which carry the cutter head rollers 69 and thus prevent any inward movement of the rollers 69 and thus prevent any move mentof the cutter heads 64 against or toward the work. Q After. the. carriage has moved a distance equal to thewidth of the cutter heads, however, and the saws v65 have cut a plurality of kerfs in thework equal .to. the width of the cutterheads, then'by this time the carriage has advanced sufiiciently far for the arms 66'to escape the projecting members 121 and asa consequence the cutter heads move inward against the Work into the lrerfs cut by the saws and thereafter travel with the saws, smoothing oif andfinishing may be adjusted. When these bars 88 are drawn toward the rear of the machine by the springs 84, this bar 122 shifts the arms 66 outward and carries the rollers 68 and 69 away from the form or pattern 47-. hen the machine is started up, however, bythe actuation of lever 82, these bars 83 are drawn forward against the action of spring 84 and this draws the bar 122 forward, thus allowing the roller 68 to bear against the pattern. The rollers 69 would also shift to afposition against the pattern were it not for the bar 117 witlrits projecting stop blocks 121.

The operation of this invention is as follows: Assuming that the work tobe operated on is mounted in chucks or stocks and that the pattern 47 is disposed in its corresponding chucks, then upon a depression of thelever 82 to the position shown in Figure 3, the slide 77 will be shiftedso as to carry the screw-threaded portion 0 of the part 78 into engagement with the screwthreads 20 of shaft 19. At the same time, the rotation of the shaft 81 by means of-the lever 82 will cause the wedge 95 to be shifted between the frame member 12 of the supporting frame and the end frame of the carriage and will shift the carriage a short distance forward, this shifting of the carriage being accomplished before the. screwthreads 0 come in engagement with the threads 20. The shifting of the carriage forward also causes the sprocket wheel 88 to shift into engagement with the key 94 on shaft 23 so that thus power is transmitted to the chucks supporting the work and the pattern and these chucks commence a rotation. At the same time, as before explained, the bars 83 and the bar 122 are shifted out of position in front of the arms 66 and 66 so as to permit these arms tomoveinward, carrying the rollers 68. The rollers ,68

move inward against the pattern 47 and this permits the saws 65 to move in against the work and rotate it, cutting a kert in the work.

WVhen this kerf is wide enough to admit the ointers or cutter heads 64, the carriage is shifted sufliciently so that the stop blocks 121 no longer engage arms 66 and hold the rollers 69 away from the pattern and these rollers 69 move inward against the pattern and the jointer heads 64 move into the kerfs, smoothing the rough saw cut and trueing the work down to the dimensions of the pattern. The carriage travels longitudinally until the work is completed, and the amount of travel of the carriage depends upon the setting of the sleeve 100, the rod 101, and the head 102. If these parts have been set properly, then when the saws and cutter heads have completed their work, the head 102 will enter between the latch 105 and disk 108 (see Figure 18) and lift the latch irom the notch 104. This permits the springs 84 to rotate the shaft 81 in a reverse dlrection to the direction of its initial rotation, thus shifting the parts back to their original position, and the spring 85 under these circumstances draws the carriage back to its initial position ready for a new out. p

'The inclined bar 117 is for the purpose of holding the rotary cutters away from the work until the saws have each cut a kert wide enough for the cutters to enter. Then when the out has been completed and the cutters and saws have finished their work, the bar 122 is forced back by the spring 841%, thus pressing the arms 66 and 66 back to their initial position and clearing them "from the stop blocks 121 which are disposed in step relation to each other. The bar 117 has such an angle across the carriage as to allow the arms 66 and 66 to clear the stop blocks 121 as the carriage moves back to its initial. position. The protuberant portions 7) of? all of the arms 66 except the first arm are formed to contact with the stop blocks 121, and these protuberant portions are rendered necessary by the tart that the stop blocks are disposed in step relation to each other. It is to be noted that the member 40 is longitudinally adjustable upon the longitudinal rods of the carrier and is held in its adjusted position by set screws so that the tail stock may be shifted from or toward the head stock to thereby provide for work of different lengths being disposed between the head and tail stocks, and it is to be further understood that while this marhino is illustrated as arranged for cutting a spoke for a wagon wheel, it will be understood that it may be used for cutting a large variety of different forms and that itis not limited to making spokes or like articles. or course, the travel of the carriage will'depend upon the length of the articles to be made, and

it is obvious that'the machine may be constructed of suflicient size to permit the formation of very large articles in the machine.

Furthermore, any number of saws and jointer heads may be used in the machine, depending upon the work desired to be done. For short work, only one saw and jointer head will be used and for larger work more saws and j ointer heads. For making spokes, however, only three saws anda jointer heads are required. Where this machine is driven by an 8-horse power engine, three spokes may be turned out per minute and the services of only two. men will be required to handle the machine.

The saws designed to be used with this machine are illustrated most clearly in Figure 19 and are like ordinary'circular saws except that the teeth a which alternate with the teeth 3 have sharper points than the teeth 3 The tooth 3 is square]? cut than the tooth 2 for the purpose of dragging the cut made by the tooth z and permits the saws to make their way into the timber without hanging. The saws have a very'small kert to make but they cut laterally against the timber forming one wall of the kerf. Preterably each saw mandrel should be so placed on the arm 5% that the saw is disposed at slightly more than a right angle with the axis of the work, thus causing the saw to cut laterally as well as inwardly. lVhile the cutters 64 are of more or less usual form, it will be understood that the blades or bits are formed in different shapes and with different slopes to give the proper form to whatever work they surface. The inclined bar 117 is adjustable at both ends and this is true of the bar 122. This is necessary so that these bars 117 and 122 can be adjusted to suit patterns of larger or smaller sizes.

While we have illustrated one embodimentof our invention and illustrated certain de tails of construction and arrangement of parts. we do not wish to be limited to this, as it is obvious that many of these details may be changed without departing from the spirit of the invention as stated in the appended claims.

We claim 1. In a wood working machine, a rotatable work supporting means, a rotatable pattern supporting means, a roughing cutter associated with the work supporting means and movable toward or from the axis of the work. a finishing cutter associated with the roughing cutter but independently movable toward or from the work, controlling members associated with the pattern and bearing thereagainst and operatively connected. respectively to the roughing cutter and the finishing cutter whereby to control the movement of said'cutters toward or from the work in accordance with the pattern, means for driving saidcutters and rotating the pat 'worlr supporting means, a rotatable pattern supporting means, a rotatable roughing cutter associated with the work supporting meansand movable toward or from the axis of'the Work, a finishing cutter sociated with the roughing cutter'butbeing independently movable'toward or from the Worlr,

controlling members associated with the pat tern and bearing thereagainst and opera tively-connected respectively to the cutters whereby to control the movement of the cutters toward or from the work in accordance with the pattern, means for driving said outters and rotating the pattern and Work sup-- porting means, means for shifting the pattern and Work longitudinal1vrelative tothe cutters'and controlling members, and'm'eans holding the members and cutters associated therewith from contact \vith the Work until the roughing cutter has cut a'kerf' equal to the Width of the finishing cutter'in the work and then permitting the movement of the controllin members and associated fin ishing cutter toward the pattern andwork respectively. 7 j c 3. A wood \vorking'marhine including a supporting frame, a carriage movable longitudiually thereon, rotatable work supporting means on th carriage, rotatable pat-tern sup porting means thereon, "power operated means for rotating the pattern supporting means and the work;supporting means in unison, arotatable'cutter shiftably mounted upon "the supporting frame and associated with the work supporting means and i"- able toward or from the axis of the work supporting means, a rotatable controlling member mounted upon the supporting frame and associated with the pattern and movable toward orfrom the axis thereof, the cutter and controlling member being connected for simultaneous movement transverse to the movement of the carriage, means for driv ing the cutter, means. urging the cutter again t the work and the controllii 1 member against the pattern, a siingle manuall roperablecontrollingineans adapted upon a movement in onedirection to operatively connect the carriage to the driving means and simultaneously shift the cutter a1'1dcontrolling member therefor toward the W'oi'kand a-c tern respectivel simultaneously operatively connecting the patternand Worksupporting means to the driving means therefor;

and means upon;apredetermined movement of the carriage acting automatically to disconnect the carriage from the carriage driving means to permit its return under retracting means, retractlng the cutter and controiling means from thework and pattern respectively, and disconnecting the pattern and Work supporting means from the driving mechanism. I

a. A Wood Working machine including" a supporting frame, a carriage movable longitudinally thereon, rotatable Work supporting means on the carriage, rotatable pattern supporting means thereon, power operated means for'rotating the pattern supporting means and the worksupporting means in unison, a rotatable cutter mounted upon the supporting frame and associated With the work supporting jmeans and movahleto- Ward or from the axisv of the Work, a rotatable controlling -member mounted upon the supporting, frame and associated with the pattern for movement toward or from the axis thereof, thecutter'and the controlling member therefor being connected for simultaneous movement transverse to the movement of the carriage, means for driving the cutter, means urging the cutter again'st'the Work and the controlling member against the pattern, carriage driving means normally disconnected from the carriage,

shiftable member adapted to operatively connect the carriage driving means to the carriage, a longitudinally extending shaft having a handle and operatively' connected to the'shiftable member and having a crank, a member operat-ively engaging the controlling member and operatively connected to said crank whereby upon a movement of the shaft in one direction themember shall retract the. controlling member from the patteniand the cutter from the Work," a driving member operatively connecting the driving means for the ork and pattern with a source of power, means connected to said shaft for shifting-said driving mem her to an inoperative position upon a move ment of the shaft retracting the controlling member and the'cutterfrom the pattern and ork respectively, means for locking the shaft in a position opcratively connecting the carriagedriving means to the carriage,

the driving member with the patternand work rotating means, and the cutter and controlhng means 1n engagement with the;

pattern and Work respectively, and means acting automatically upon a predetermined movement of the carriage releasing said locking means to permit the simultaneous. disengagement of the carriage driving means from the carriage, the pattern and Work driving means from thepattern and Worlejand a retractlon of the cutter and controlling I means therefor from engagement with't'hework and pattern respectively.

5. A wood working machine including a supporting frame, a carriage movable longitudinally thereon, rotatable work supporting means on the carriage, a rotatable pattern supporting means thereon, power operated means for rotating the pattern, supporting means and the work supporting or from the axis of the work supporting b means, a rotatable controlling member on the supporting frame associated with the pattern for movement toward or from the axis thereof, the work and pattern support ing means being connected for unitary movement transverse to the movement of the carriage, a longitudinally extending shaft having arms at its ends, transversely extending rods connected. tosaid arms, springs con-- nected to the rods to retract the same, a longitudinally extending bar operatively connected to said rods and acting when the rods are shifted against the action of the springs to shift the cutter and controlling member toward the \VOI'X and pattern respectively, a longitudinally shiftable engaging member carried on the carriage and adapted in one position to engage the carriage with the driving means therefor and operatively connected to the shaft to be shifted. thereby into engagement with the driving means when the shaft is sliiftcd to carry the cutter and controlling means th erefor into engagement with the work and pat tern respectively, a driving member adapted to connect the work supporting means and the pattern supporting means with the driving means therefor, operative connections between said shaft and said driving member whereby to connect the pattern and work with the driving means therefor upon a movement of the shaft to carry the cutter into engagement with the work, manually operable means for oscillating the shaft, a latch forholding the shaft in the last named position, andmeans carried by the carriage and acting upon a predetermined movement of the carriage to release said latch to permit the shaft to oscillate under the action of said springs to simultaneously disconnect the pattern and the work from the driving means, the carriage from its driving means, and retract the controlling member and the cutter from the pattern and work respectively. I i

6. A wood working machine including-a supporting frame, a carriage movable longitudinally thereon, rotatable work supporting means on the carriage, a rotatable pattern supporting means thereon, power'open ated means for rotating the pattern supportlng means and the work supporting means in unlson, said means belng normally disconnected from the pattern and work supporting means, carriage driving means normally disconnected from the carriage, a rotatable cutter mounted upon the supporting frame and associated with the work supporting means and movable toward or from the axis of the work supporting means, a rotatable controlling member on the supporting frame associated with the pattern for movement towardor from the axis thereof, the work and pattern supporting means being connected for unitary movement transverse to the movement of the carriage, a longitudinally extending shaft having arms at its ends, transversely extending rods connectedto said arms, springs connected to the rodsto retract the same, a longitudinally extending bar operatively connected to said rods and acting when the rods are shifted against the action of the springs to shift the cutter and controlling member toward the work and pattern respectively, a longitudinally shiftable engaging member carried on the carriage and adapted in one'poed to the shaft to be shifted thereby into engagement with the driving means when the shaft is, shifted to carry the cutter and controlling means therefor into engagement with the work and pattern respectively, a clutchmember adapted to engage the work supporting means and the pattern supporting meanswith the driving means therefor, operative connections between said shaft and said clutch whereby to connect the pattern and work with the driving means therefor upon a movement of the shaft to carry the cutter into engagement with the work, manually operable means for oscillating the shaft, a latch for holding the shaft in the last named position, and a longitudinally adjustable member carriedvonthe carriage and adapted when the carriage has moved. a predetermined amount to engage said latch and release it to permit the shaft to oscillate under the action of said springs to simultaneously disconnect the pattern and the work from the driving means, the carriage from its driving means, and retract the controllin member and the cutter from the pattern and work respectively.

7. A mechanism of the character described including a supporting frame, a carriage toward or from the shaft and mounted on the carriage, a rock shaft mounted on the supporting frame and having a handle, an

arm slidingly mounted upon the rock shaft and having rotative engagement at all times therewith, said arm, being operatively connected to the carriage to shift longitudinally therewith and to the shiftable screw-thread ed member on the carriage to shift it, a ratchet wheel mounted on the shaft, a latch mounted upon the supporting frame and engageable with said ratchet wheel when the shaft is rotated to shift the screw-threaded member into engagement with the shaft, means on the carriage adjustable longitudinally thereof and engageable to disengage the latch from the ratchet wheel upon a movement of the carriage a predetermined distance toward the latch and ratchet wheel, and means acting to urge the shaft in a direction to shift the screw-threaded member out of engagement with the shaft.

8. In awood working machine, a rotatable work supporting means, a rotatable pattern supporting means, a rotatable roughing cutter associated with the work supporting means and movable toward or from the axis of the work, a rotatable finishing cutter associated with the roughing cutter and being independently movable toward or from the work, controlling members associated with the pattern and bearing thereagainst and respectively connected to the roughing cutter and the finishing cutter whereby to control the movement of the cutters toward or from the work in accordance with the pattern, means for driving said cutters and rotating the pattern and work supporting means, means for shifting the pattern and work longitudinally relative to the cutters and controlling members, means holding the controlling members and finishing cutter associated therewith from contact with the work until the roughing cutter has cut a kerf in the work of a width equal to the width of the finishing cutter and then permitting the movement of the controlling member and finishing cutter toward the pattern and work respectively comprising a bar extending longitudinally of the machine and having a I portion projecting toward and operatively engaging the controlling member for the finishing cutter and preventing the inward movement of the controlling member for the finishing cutter until the carriage has traveled a predetermined distance.

9., In a wood working machine, rotatable work supporting means, rotatable pattern supporting means, a series of rotatable roughing cutters associated with the work supporting means and movable toward or from the axis of the work, a series of rotatable finishing cutters, each finishing cutter being associated with one of said roughing cutters and being independent-1y movable toward or from the work, controlling members associated with the pattern and bearing thereagainst and each respectively connected to a roughing cutter and a finishing cutter whereby to control the movement of the cutters toward or from the work in accordance with the pattern, means for driving said cutters and rotating the pattern and work supporting means, means for shifting the pattern and work longitudinally relative to the cutters and controlling members, means holding the controllin members and cutters associated therewith from contact with the work until the roughing cutters have cut kerfs of a width equal to the width of the finishing cutters and then permitting the movement of the controlling members and associated cutters toward the pattern and work respectively comprising an inclined bar pivoted at one end and adjustable at the opposite end and mounted upon the carriage for movement therewith, said bar having portions projecting toward and operatively engaging the controlling members for the finishing cutters and preventing the inward movement of the controlling members for the finishing cutters until the carriage has traveled a distance equal to the width of the finishin cutters.

10. In a wood Wor ing machine, rotatable work supporting means, a rotatable pattern supporting means, a rotatable cutting saw associated with the work supporting means and movable toward or from the axis of the work, a rotatable cutter head associated with said saw and being independently movable toward or from the work, controlling members associated with the pattern and bearing thereagainst and respectively connected. to the saw and to the cutter head whereby to control the movement of the saw and cutter head toward or from the Work in accordance with the pattern, means for driving said saw and cutter head and rotating the pattern and work supporting means, means for shifting the pattern and work longitudinally rela tive to the saw and cutter head and the controlling members thereon, and means holding the controlling member and the cutter head associated therewith from contact with the work until the saw has cut a kerf of a width equal to that of the cutter head in the work and then permitting the movement of the controlling member and cutter head associated therewith toward the pattern and work respectively.

In testimony whereof we hereunto our signatures.

ALBERT P. SMITH. WILLIAM E. SHOCKLEY.

Images