US1435619A - Carving machine - Google Patents

Description

C. A. OVESON.

CARVING MACHINE.

APPucATloN FILED Aue. l. 1912s..

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CARVING MACHINE.

APPLICATION FILED Au'G.1. 191s.

1,4356 1 9, Patented NOV. M, 1922.

6 SHEETS-SHEET 2.

I cmzy 0mm@ MMM @W C. A. OVESON.

. CARVING MACHINE.

APPLICATION man AUGJ. 19m.

Patented Nov. ML, 1922.

6 SHEETS-SHEET 3- c. A. .0vEs0N. K CARVING MACHINE.

APPLICATION FILED AUG.I| 1918- I Patented Nov. M, 1922.

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C. A. OVESON.

CARVING MACVHINE. 'APPLICATION FILED Auw. 191-8.

Patented Nov. M, 1922.

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mw @E www @s C. A. OVESON.

CARVING MACHINE.

APPLICATION msn Aue.1.1918.

l1 ,435,6 1 9 Patented Nov. M, 11.922.

6 SHEETS-SHEET 6.

Patented Nov. 14, 1922.

S, ASSIGNOR TO HERBERT S. MILLS, OF

CHICAS-0, ILLINOIS.

CARVING MACHINE.

Application led August 1, 1918. Serial No. 247,813.

To (AZZ whom t may concern.'y

Be it known that I, CARL A. GVESON, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Carving Machines, 'of which the following is a specification.

My invention relates, more particularly., to improvements in carving machines for carving objects from pieces of material, as for example wood, of the type employing a pattern-follower and cutter operatively connected together to co-operate with a pattern and the worlr'to be operated on; and my primary object is to simplify machines of this type as hitherto constructed and render their operation more positive.

Referring to the accompanyingdrawings:

Figure 1 is a plan view of my improved machine. Fig. 2 is an enlarged section taken at the line 2 on Fig. 1 and viewed in the direction of the arrow, the work-carrying rotatable head being shown by a face view. Fig. 8 is a .section taken at the line 3 on Fig. 1 and the line 8 3 on Fig. 2 and viewed in the direction of the arrows. Fig. 4 is a sectional view of the work produced by the particular construction of machine illustrated. Fig. 5 is a section taken at the line 5 on Fig. 1 and viewed in the direction of the arrow, this view being a face view of the templet or pattern-carrying rotatable head. Fig. 6 is a section taken at the line 6 on Fig. 1 and the line 6 6 on Fig. 5 and viewed in the direction of the arrows. Fig. 7 is a section taken at the line 7 on Fig. 5 and viewed in the direction of the arrow. Fig. 8 is an enlarged section taken at the line 8 on Fig. 6 and viewed in the direction of the arrow. Fig. 9 is a section taken at the line 9 9 on Fig. 1 and viewed in the direction of the arrows. Fig. 10 is a broken plan view ofa detail showing one of the similar bearings for the pattein-and-workcarrying shaft, with an adjustable device for releasably holding` this shaft in shifted position. Fig. 11 is an enlarged section taken at the line 11 on Fig. 1 and viewed in the direction of the arrow. Fig. 12 is an enlarged section taken at the line 12 on Fig. 1 and viewed in the direction of the arrow. Fig. 13 is an enlarged section taken at the line 13 on Fig. 1 and viewed in the direction of the arrow. Fig. 14 is a section taken at the line 14 on Fig. 13 and viewed in the di- 'tion taken at the line `the travel of the patterns against rection of the arrow. Fig. 15 is a plan sec- 15--15 on Fig. 9 and viewed in the direction of the arrows. Fig. 16 is a broken section taken at the line 16 on Fig. 15 and viewed in the direction of the arrow. Fig. 17 is a broken section taken at the line 17 on Fig. 15 and viewed in the direction of the arrow; and Fig. 18, a view of the machine in side elevation.

The frame of the machine is formed of the uprights 19, 20, 2l, and 22. the longitudinally-extending members 23, 24, 25, and 26, and the cross members 27, 28, 29, 30, 31, and 32. The frame thus provided carries near one end, a shaft 33 which extends transversely thereof, this shaft being rotatable and longitudinally shiftable as hereinafter described. The shaft 33 carries a disksliaped head 34 rigidly secured thereto and provided with means for supporting, and presenting to a follower device hereinafter described, the patterns or templets corresponding to the form of the object, or objects, to be produced by the machine. The shaft 33 also supports the material from which the work is to be produced, the support for this purpose comprising a. diskshaped head 35 rigidly connected with the shaft 33 to be rotatable therewith, the work hereinafter referred to and carried by this disk, being caused to travel into a position where it is progressively acted on by a cutting tool hereinafter described.

It may be here stated that the patterns on the head Sil and the work on the head 35 are caused to rotate with the shaft 33 and shift with the latter lengthwise of the shaft in the pattern-follower, these heads and the patternfollower and cutter being so arranged that as the shaft 33 rotates, there is relative movement of these parts .for producing' a feeding action, the follower and cutter in the particular construction of machine illustrated, gradually moving toward the shaft 33.

The particular construction of machine illustrated is designed for the carving of the back and front portions of violin bodies and in this particular arrangement I provide four templets or patterns, one represented at 36 for the outside of the back, another represented at 37 for the inside of the back, another represented at 38 for the outside of the front, and another' represented at 39 for the inside of the front, these patterns being provided on a face of the disk-head 34 in grouped relation about the shaft vand preferably equi-distantly spaced apart. The patterns referred to are provided as integral parts of the head 34, it being understood that the patterns 36 and 38 are offset outwardly from the face of the disk 34as shown in Fig. 6, whereas the patterns 37 and 39 are inset relative to the face of this head, as represented of the pattern 39 in Fig. 7. The work-carrying head 35 is so constructed as to present on the face thereof, corresponding with the fac'e of the head 34 carrying the patterns 36, 37, 38, and 39, the pieces of wood, or other material, from which the front and back portions of the violin bodies are to be constructed, these pieces being supported on the head 35 in the same relative positions as the patterns referred to. In Fig. 2, I have illustrated a desirable arrangement of devices for holding the pieces of work on the head These comprise the frame-works 40 secured to a face of the head 35, each frame 40 being formed of four frame members 41, 42, 43, and '44, the frame members 41, 42, and 43 being rigidly and stationarily secured to the head 35, and the member 44 being pivotally connected to the head 35, as indicated at 45 and releasably held in closed position by a catch device 46. The frame-works 40 thus provided, are adapted to securely hold the pieces of wood, or other material from which the articles are to be formed, and to this end the pieces referred to and represented at 47, engage at grooves 48 provided therein entirely around their outside edges, with inwardly-extending flanges 49 provided on the members of the frames 40. inasmuch as one end of a violin body is wider than its opposite end, the pieces 47 are preferably provided of the form shown in Fig. 2 and the frames 40 are correspondingly shaped as shown, the end members 41 and 43 of these frames preferably being parallel tolpermit of the assembling of the pieces 47 with the work-holding meansby sliding them into engagement with the flanges on these members.

The shaft 33 is provided at opposite ends with pairs of collars 50 and 51 rigid therewith and spaced apart, these collars being located at opposite sides of a roller-hearing,

the casing of which is represented at 52 and the interposed rollers at 53, the collars `50 and 51 being of greater diameter than the casing 52. Bearing casings 52 rest at their lower flattened portions 54 on bearing blocks 55 supported on the frame of the machine, and are partly encircled by strap devices 56 secured to these bearing blocks as by the bolts 57, and the casings 52 carry upwardlyeXtended screw devices 58, the heads of which travel in slots 59 in the strap members '56. The construction just described provides for the journaling of the shaft 33 in a manner to permit it to rotate, but also permitting it to be shifted longitudinally or,

vin other words, crosswise of the machine.

In order that the patterns on the head 34 be constantly forced toward the pattern-follower hereinafter referred to and maintained in engagement therewith, I provide means for yieldingly forcing the shaft. 33, with the parts carried thereby, to the left in Fig. 9, these means in the particular construction shown,comprising a spring 60 connected at one end, as indicated at 61, with the plate 62 secured to the frame member 23 and at its opposite end with an adjusting` device 63 carried by a lever 64 pivoted at one end, as indicated at 65, to a bracket 66 on the frame member 23 and equipped at its opposite end with a bearing member 67 pivoted thereto at 68, and extending at its conical bearing end 69 into a similarly shaped recess 70 in one end of the shaft 33.

rEhe pattern-follower and cutter represented at 71 and 72, respectively, for co-operation with the patterns and work, are mounted ona carriage 73 which is supported and slidable along parallel rods 74 and 75 secured at their opposite ends in the frame'members 27 and 29 and extending at right angles to the shaft 33. The cutter 72 is formed of a shaft 76 journaled in bearings 77 and 78 on the carriage 73, this shaft preferably being parallel with the guiderods 74 and 75 and carrying at its outer end, a cutter-head 79 presenting cutting edges on its periphery, the shaft 76 being provided wit-h a pulley 80 connected by a belt 81 with a pulley 82 fixed on a shaft 83 carrying a fixed pulley 84 and an idler 85 with which coi-operates a belt 86 driven from any suitable source of power, this belt co-operating with a. belt-shifter comprising a longitudinally-shiftable rod 87 carrying arms 88 spaced apart and straddling the belt 86 for shifting the belt'from one to the other of the pulleys 84 and 85, as desired. The pattern-follower 71 is preferably in the form of a flattened sphere as represented, and is carried bya shaft 89 rotatable in bearings 90 and 91 on the carriage v73. The bearing 91 is pivotally connected at a bearing stud 92 thereon with a plate 93 rigidly secured to the body of the carriage 73 to permit of the pivotal adjustment of the shaft 89, the bearing at the opposite end of the shaft comprising a bearing block 94 sljidably confined in a yoke 95 and engaging with the threaded portion 96 of an adjusting screw 97 j ournaled in the upright wall 98 of the yoke 95, whereby the'pattern-follower 71 may be adjusted relative' to the face of the head 34.

The carriage 73 is connected with means for feeding it to the right in Fig. 1 during the rotation of the shaft 33, these means,

`nassie as shown, comprising a threaded shaft 99 journaled at its opposite ends on the cross members 29 and 31, this shaft carrying a bevel pinion 100 meshing with a bevel pinion 101 on a vertical shaft 102 journaled on the machine and carrying a gear 103 meshing with a worm 104 fixed on a shaft 105 journaled in bearings 106 on the frame members 24 and 26, this shaft carrying a worm wheel 107 meshing with a worm 108 on the shaft 83, the shaft also carrying a sheave 109 connected by a belt 110 with a sheave groove 111 provided about the periphery of the head 34, for driving the shaft 33 and the parts carried thereby. rlhe threaded rod 99 engages a split nut represented in Figs. 13 and 14 and comprising the bar sections 112 and 113 arranged side by side and slidable up and down in a guideway 114 on the carriage, and upper and lower nut sections 115 and 116 carried by the bars 112 and 113, respectively. The bars 112 and 113 are provided with cut-out portions equipped with racks 117 which engage a pinion 118 fixed on a shaft 119 journaled on the carriage 73 and provided with an operating handle 120 for moving the sections of the nut into and out of intermeshing threaded engagement with the threads on the rod A99.

The driving of the shaft 83 for operating the cutter device 72 and shifting the carriage 73 relative to the heads 34 and 35, is controlled through the medium of the belt shifting device hereinbefore referred to, this device, for its operation, co-operating with mechanism for shifting'it and, in the particular construction illustrated, comprising a block 121 lixed on the rod 87 and carrying a pin 122 extending into a slot 123 in an arm 124 xed on a shaft 125 journaled in bearings 126 on the frame of the inachine, and a lever 127 rigid on the shaft 125 and connected with one end of a coil spring 128, the opposite end of this spring being connected with a bracket 129 on the framework of the machine, this spring tending to shift the handle 127 to the dotted position shown in Fig. 16 and in such movement shifting the belt shifter to the dotted position shown in Fig 15, in which the belt 86 is disengaged from the fixed pulley 84 and engages the idle pulley 85. The frame member 25 is provided at its underside with a catch device in the form of a bell crank lever 130 pivoted to this frame member, as indicated at 131 and formed with a shoulder 132 which, under the action of a leaf spring 133 secured at one end to an extension of the lever 130 and at its opposite end confined between pins 134 depending from the frame member 25, normally extends into a position wherein it interlocks with the lever 127 in the full line position represented in Fig. 16 in which the belt 86 drives the fixed the parts just described being so proporn tioned that the cutter 72 and feed of the carriage 73 will be automatically discontinued after the final cut has occurred.

The operation of the machine is as follows:l

rlhe machine is shown in the drawings in the position it assumes at the beginning of the operation. 1n this position of the machine, the head 34 under the action of the sprinO 60, is forced into engagement with the periphery of the pattern-follower 71 and the carriage 73 is positioned at the lefthand end of the machine as shown in F ig. 1; the belt shifting means are in a position for driving the fixed pulley 84 in which position the handle 127 is interlocked with the catch device 130 (Figs. 1 and 16), and the split nut device formed of the sections 115 pand 116 are in engagement with the threaded rod 99. Iii this position of the parts, the cutter device 72 and the shaft 33, together with the parts carried by the latter. are rotated from the pulley 82 and the sheave 109 and the screw rod 99 is rotated through the medium of the shaft 102. In the rotation of the heads 34 and 35, under the gradual feeding of the pattern-follower 71 and'cutter device 72 toward the shaft 33, the pattern-follower 71 travels across the patterns 36, 37, 38, and 39, and in so doing, by reason of the laterali rigidity thereof, causes the shaft 33 and with it the heads 34 and 35, to shift lengthwise in one direction or the other, depending on the engagement of the pat-tern-follower with an offset or insert portion of the pattern. rlhe head 35 carrying the work being rigidly fixed on the shaft 33, the shifting of the latter as stated, produces a corresponding shifting of the pieces of work on the head 35 relative to the cutteredevice 72 and thus the exposed faces of the pieces 47 of the work are cut away to present the form of the respective patterns which they oppose, the outline of tions presented by the pieces of work when the cutting operation referred to is completed, being represented b v dotted lines in Fig. 2. As soon as the carriage 73 reaches a point in its movement toward the shaft 33, where the final cutting is completed, the tappet 136 strikes the arm 135 of the lever 130, thereby releasing the handle 127 which, under the action of the spring 128, swings to the right in Fig. 16 and shifts the belt the raised or depressed por- 86 from the pulley 84 to Jmember25 and adapted lposition for eingaging` the lefthand end of `leasaloly lock the shaft in this position, it

that the machine be equipped 137 pivoted at 138 to the frameto be swung into a is lpreferred with, a lever when this shaft is the shaft 33 in F ig. 9

the free shifted to the right in this figure,

end of the lever engaging a stop pin 1397-on the frame-member 25 for holding this lever in the position stated. The operator then rotates the shaft 109, by means of the handle 120 to disengage the split nut from the threaded shaft 99 and then bodily shifts the carriage 73 to the left in Fig. 1'to the position therein shown. The pieces of Work which have been carved or fashioned on one face only, are then removed from the holders on the head 35, reversed, to turn their opposite sides outwardly and shifted `tothe next holder to position them for being carved on their opposite faces. ln the particular machine shown, each piece of Work must be shifted from one holder to another inasmuch as it is to be fashioned or carved on opposite faces. Thus if a piece of Work is first applied to the uppermost holder in Fig. 2, itivould be removed therefrom, after being carved on its exposed face to form the contour for the outside of the back of the bodyportion of a violin, then reversed and positioned in the holder at the extreme righthand side of Fig. 2 in order that its unfashioned face be exposed to the cutting action for cutting it to conform l to the desired contour ofthe inner side of the baclrportion of the violin; and if the .tothe shaft 3,3 and cutter i carriage, the number ofpieces of Worlrpropiece `'of Work dwas fashioned ,cnf one face first in the hol-der atthe righthand side-of F 1g. 2, it would then be reversed and shifted .tothe uppermost `holrderin Fig.ll2 to fashion itsopposite side, and these same changing operations wouldbe effected astothe pieces of Work in the lower-most holder in-Fig. 2 and the one at theextreme,lefthand side of this figure. lWith the pieces of Work `thus repositioned, the operator, to again start the ymachine into operation for performing the feeding and cutting operations, adjusts the split nut on the carriage yto `engage the threaded rod 99 and swings the lever 127 from-the dotted position in Fig. 16 to the vfull line position therein. It Will be readily understood that byl addingother heads 35 devices 72 to .the

duced by the machine, may be increased as desired.

While -have illustrated` and described a particular construction of vmachineemloodying my invention, I do not Wish to be understood as intending to limit it thereto as the same may be variously modified and altered Without departing from the `spirit `of my invention, vit being; .my intention to claim my invention as fully and completely as the prior state of the art Will permit.

llllhat I claim as new and desire to vsecure by Letters Patent is- A Work-holder formed of a support and .membersonsaid .support forming anenclosing frame, each of said members presenting` along substantially its entire inner edge a portion or flange offset from said support and adapted to enter grooves in the edges of Work applied to thezholder, certain of said frame members being movablerelative toA others thereof.

cant A. ovnsoN.

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