US979824A - Woodworking-machine. - Google Patents

Description

A. D. CATLIN. I YWOODWORKING' MACHINE. APPLICATION FILED 001-13, 1909.

Patented Dec. 27, 1910.

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Patented Dec.27,1910.

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A. D. GATLIN.

WOODWORKING MACHINE.

APPLICATION FILED 00113, 1809.

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A. D. CATLIN. WOODWORKING MACHINE.

APPLICATION FILED 0011s, 1909.

Patented Dec. 27, 1910.

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ABEL D. CATLIN, OF GHATTANOOGA, TENNESSEE.

WOODWORKING-MAGHINE.

Specification of Letters Patent.

Patented Dec. 27, 1910.

Application filed October 13, 1909. Serial No. 522,456.

To all whom it may concern:

Be it known that I, ABEL D. CATLIN, a citizen of the United States, residing at Chattanooga, Tennessee, have invented certain new and useful Improvements in Woodworking-Machines, of -which the following is a specification.

My invention relates particularly to that class of wood working machines designed for turning columns, and it consists in the features of construction and combination and arrangement of parts hereinafter described and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a perspective view of a wood turning machine embodying my invention; Fig. 2 is an end elevation of the machine; Fig. 3 is a plan view with a portion broken away; Fig. 4 is a front view with a portion broken away and parts omitted.

In these drawings, 1 represents a roughing cutter carried by a shaft journaled in bearings 2 and adapted to be driven in any suitable manner, as by a band pulley 3. This roughing cutter is designed to perform the preliminary cutting, and to bring the column to its approximate shape. The col umn or work piece is indicated at 4, this being mounted between centers 5 arranged axially in line with each other, and adapted to clamp the work piece in line with its axis, one of the centers or chuck members being connected with a screw threaded stem 6 upon which a nut 7 works, the said 'nut being turned by the hand wheel 8, and operating between bearings 9 and 10. The bracket 11 carrying these bearings is mounted on a shaft 12 suitably journaled in the frame, which shaft also carries the bracket 13 which holds the clamping or centering member 5 at the rightof Fig. 1. These brackets, with the shaft 12 and with the work piece, are adapted to be swung about the axis of the shaft 12, so as to bring the column or work piece which is to be cut into contact with the roughing cutter, and for the purpose of giving this adjustment or swinging movement to the parts, I employ a hydraulic power device consisting of a cylinder 14, the piston 15 of which has its rod 16 connected through a link 17 with the bracket 13. By suitably controlling the ac tion of the piston 15, the frame carrying the work piece or column may be swung into position to be operated upon by the roughing cutter, and for limiting this movement a stop 17 may be employed mounted on a screw threaded rod 18, which is pivotally connected with the frame at 19, and this stop 17 may be set at any desired point along the said rod 18 to get the desired depth of cut of the roughing cutter. After the column has been roughed up to its approximate shape by the roughing cutter, the swinging frame carrying the column is moved rearwardly so as to bring the column into position to be operated upon by finishing cutters 19, 20, mounted upon a crosshead 21 adapted to have sliding movement in suitable ways of standards 22 at the ends of the machine frame. The vertical movement of the crosshead 21 is controlled from a hydraulic power device indicated generally at 23, and comprising a cylinder and a piston, with connections leading to the cylinder for the pressure fluid, the piston rod being connected with the crosshead 21 so that the said crosshead may be raised and lowered.

The finishing knives 19, 20, it will be noticed, are of straight form, and are set at an angle to the horizontal plane in which the work piece lies, so that, as the crosshead 21 descends, the cutting knives 19 and 20 will have a draw out action upon the work piece, which, it will be understood, is r0- tated in the direction of the arrow 00 by any suitable means connecting with the holding or centering jaws therefor.

Movement of the swinging frame 11,-13, rearwardly to move the work piece or column from the roughing cutter to the finishing cutters may be limited by a stop 17 on the rod 18 before described, acting in con junction with the boss 18 on the bracket 13, through which boss the screw rod 18 passes.

I arrange upon the crosshead 21 end cutters or saws for cutting off the ends of the columns to form columns of the proper length. These end saws or cutters are indicated at 24, and are in the form of circular saws mounted upon a shaft 25 journaled in bearings 26 carried by the crosshead 21. The shaft 25 is driven through a suitable belt pulley 27. As the crosshead 21 descends, the finishing cutters 19, 20, will perform their draw out action upon the rotating work piece or column, and after they have performed their work, the rotary cut-ters 24,

which are arranged in a higher plane than the cutters 19, 20, will come into action and saw off the column to the desired length.

The weight of the crosshead carrying the finishing knives 19 and 20 may be counterbalanced in any suitable manner, as, for instance, by chains 28 connected with the crosshead passing over sprocket wheels 29 and attached to the weight, one of which is indicated in Fig. 2 at 30.

At the right of Fig. 1 I have indicated two sets of gearing, one of which including the drums 33 is adapted to rotate the column or Work piece in alternate directions and at two different speeds, that is, the work piece is rotated in the direction of the arrow Y when the roughing cutters are in operation upon it, the speed of the work piece during this roughing operation being slow as compared to that which the work piece is given when it is moved rearwardly to be acted upon by the finishing cutters, and when so acted upon, the work piece is rotated rapidly in the direction of the arrow 00. The other train of gearing 3A at the extreme right of the illustration revolves the nut 31 on the screw 32, it being rotated one way for clamping and the other way for unclamping the work piece or column between the centers 5. The screw 6 is held against rotation by a key 9 in the bearing 9 fitting into a key seat in the screw, which, while preventing rotation of the screw, permits it to move axially, and this screw is adjusted by the hand wheel 8 only when the length of the column to be turned is changed, the actual clamping of the column being done by the power driven spindle 5 at the right. I do not limit myself to hydraulic power means for giving a swinging movement to the column, nor to such means for operating the crosshead carrying thc .finishing knives.

The rotary saws 24 are adjustable in any suitable manner lengthwise of the cross-- head to suit different lengths of columns.

At the right of the finishing knife 20 I show a supplemental knife 20 which is shaped so as to cut a molding or head at the top of the column. This knife is offset slightly, so that the nuts which clamp it in position will clear the column as the knife passes the same.

The finishing knives are adjustable in any suitable manner lengthwise of the crosshead.

It will be observed that the roughing cutter is journaled at the top of pedestals 35, one at each end of the machine, and that these pedestals are connected by a sill 36 extending longitudinally of the machine and in the same vertical plane with the roughing cutter. In rear of this sill there is another longitudinally extending sill 37 connecting the end frames, and located in the Vertical plane of the guide ways and the upwardly extending frames in which the said guide ways are formed for the vertical movement of the finishing knife. At a point intermediate the vertical planes in which these sills are located the swinging support for the work is pivoted.

I provide a shield or guard 38 over the roughing cutter to prevent chips flying toward the front of the machine. This cutter rotate in the direction of the arrow, which may be described for convenience as being from front to rear at its upper periphery, and thus the chips are directed downwardly between the roughing cutter and the work piece, and when the work piece is shifted rearwardly for the-finishing cut and is rotated in the reverse direction, 2". e. from rear to front at its upper periphery, the chips fall downwardly, and in both instances the chips fall between the sills 36. and 37.

In connection with the drive for the work piece, it will be observed that this includes a gear 33 on the spindle 5 meshing with a gear 33 on the shaft 12, and this latter gear is loosely mounted on said shaft, and is con nected with a friction drive 33 to which motion is given by either one or the other of the friction driving drums 33, 33. From this it will be seen that the driving connection with the spindle is maintained in all angular positions of the swinging support 11, as the gear 33 is at the pivotal point of the said support, and it will be observed also that one of the friction drums 33 being of larger diameter than the other, they will impart respectively different speeds to the rotary work holder, that is, a faster rotation when the work holder is adjusted to the slicing cutter, 19, 20.

I claim as my invention:

1. In combination in a wood working machine, a rotary roughing cutter, pedestals therefor in the upper part of which the roughing cutter is journaled, a finishing cutter movable vertically in rear of the roughing cutter, an upwardly extending frame at each end in which the finishing cutter is guided, a sill extending longitudinally and connecting the pedestals, a sill extending longitudinally at the bottom of the upwardly extending frames, and a swinging support for the work pivoted at its lower end at a point between the vertical planes of the sills and having its upper end extending to a point between the rear side of the roughing cutter and the downwardly directed edge of the finishing cutter, substantially as described.

2. In combination in a wood working machine, a rotary roughing cutter at the front of the machine, rotating from front to rear, a chip guard over the said cutter, a vertically movable finishing cutter in rear of the roughing cutter, a. rotary work holder, an oscillating work holder support between the roughing cutter and the finishing cutter, and means for reversing the rotary movement of said work holder, and the supporting frame having an outlet for the chips below the work holder and between the roughing and finishing cutters, substantially as described.

3. In combination a rotary roughing cutter at the front of the machine, a frame in the upper part of which the said cutter is journ'aled, vertically extending frame portions at the rear of the roughing cutter, a

vertically movable slicing cutter guided in said frame portions, a rotary work holder, a swinging support therefor pivoted at its lower end in a plane between the roughing cutter and slicing cutter, and driving means for the work holder to rotate it at a high rate of speed when moved rearwardly to the slicing cutter and at a low rate of speed when moved forwardly to the roughing cut-- ter, substantially as described.

4. In combination with a rotary roughing cutter, a vertically movable slicing knife, a swinging support between the cutters, a work holder carried by said swinging support and means for limiting the swinging movement of the work holder support, said means consisting of a rod pivotally mounted and passing through the upper portion of the work holder support and having stops thereon to be engaged by said support, substantially as described.

In testimony whereof, I aflix my signature in presence of two witnesses.

ABEL D. OATLIN.

I/Vitnesses M. V. MINOR, A. R. MoKENzIE, Jr.

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