US360138A - Wood-working machine - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

W. R. BRIO-GS.

WOOD WORKING MACHINE.

No. 360,138. Patented Mar. 29, 18.87.

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(No Mom.) 2 sheets-sheet 2..

W. R. BRIGGS. WOOD WORKING MAOHINE.

NO. 360,138. Patented Mar. 29, 1887-.

r' 3. f 7 l X @Llnmlulmmlmnnuwm UNITE ill' STATES WARREN R. BRIGGS, OF EDGERTON, OHIO.

WOOD-WORKING MACHINE.

SPECIFICATION forming part o Letters Patent No. 360,138, dated March 29, 1887.

Application tiled September 14, 1886. Serial No. 213,521.

.To all whont it may concern.-

Be it known that I, WARREN R. BRrGGs, a citizen of the United States, residing at Edgerton, in the county of Villiams and State of Ohio, have invented certain new and useful Improvements in Vood-Voi-king Machines, of which the following is a specication,referen ce being had therein to the accompanying drawings.

My invention relates to wood-working machinery of that class wherein the wood is fed to fixed or stationary knives or cutters, and has for its object the provision of an article which shall be simple and durable in construction, easy of adjustment, and effective in operation; and to these ends the invention consists in the construction, combination, and arrangement of the several parts, substantially as hereinafter fully set forth, and specifically pointed out in the claims.

The invention further consists in the provision of means whereby, by the use of suitable patterns, certain knives or cutters will automatically adjust themselves so as to cut a body after a pattern of the desired configuration.

The invention is illustrated in the accompanying drawings, which form a part of this specification, and in which- Figure l is a top plan view of my improved molding-machine. Fig. 2 is a side elevation thereof. Fig. 3 is an enlarged perspective view of the traveling` carriage. Fig. 4 is a perspective view of the power-shaft provided with drivingpnlleys at its outer end and a gear-wheel on its inner end. Fig. 5 is a detail perspective view of the knife or cutter de tached;and Fig. 6 is a detail vertical sectional view through one of the cutters.

In the embodiment of my invention I employ a rigid oblong-shaped frame, A, consisting, mainly, of four uprights, a, connected by horizontal bars a on the sides, bars at a3 at the forward end, and by bars at a5 at the rear end.

B B designate the sliding cutter-supporting frames, consisting each of two bars, Z) b, one above the other and connected together'lby means of .cross-bars b'l b3. These cutter-supporting frames are pivoted at their rear ends, as at bt, to the transverse cross-bars c* a5, and

(No model.)

the bars b'2 of each frame are connected to the front uprights, a, of the frame A by means of a spring, B1, preferably a coiled one, and as an offset to this spring-tension the bars b b are L connected at their front ends by means of a running cord,c, passing over suitable pulleys,

toafoot-lever, O. which is pivoted to the under side of the bar a5. This lever is limited in its upward movement by the bar (thunder which it operates.

D designates the carriagesupport,disposed,

preferably, in the longitudinal center of the machine, resting on and secured to the bar a4, and this earriagesupport is provided in its upper surface with a longitudinal slot or groove, d. ing frame is disposed in any suitable manner a roller, d', for a purpose to be hereinafter ex` plained.

E designates the carriage, the baseethereof having on its under side a downwardly-pro jeetinglongitudinal rib, c, which engages with the groove d in the track or support D.

F designates a frame, consisting of side pieces, f f, a connecting-bar at top thereof, as f', to which is pivoted, as at 03, the lower inner end of a lever, G, bent near its pivoted end downwardly to form an eccentric, as g, and thence bent upwardly, terminating in an arm, g. The lower part of this lever is connect-ed at g2 to a clamp, G, which is disposed parallel with the conneetingbarf, and which is provided at each end with a recess adapted to receive the edge of the uprights f f. This clamp is arranged above the pattern G2, which rests upon and is secured to the base e of the carriage to be carried thereby. The wood or material G is placed upon the pattern and clamped or held in place by the clamp G The clamp G is capable of a vertical sliding movement on the end standards, f, of the frame of the endwise-movable tool-carriage, when the lever G is moved on its pivot,in order that the work or material G can be removed from and placed in position between the clamp and the pattern G G2. rIhe lower edge of the horizontal upper bar, f, of the frame F has a notch, f4, to receive the loop g2, and thereby permit the sliding clamp G to move to the fullest extent permitted by the bar f without hinderance from the said loop. The base e is At the front end of the carriage-support` IOO provided near its rear end with a slidingrack, e2, with which engages, to effect the movement of said carriage, a gear-wheel, H, hung ona shaft, h, which is mounted in vertically-adjustable bearing h', and again on the horizontal bar a of the frame A.

I designates the cutter for molding or forming the product or work held in the carriage, one of which is provided for each of the swinging frames. Each cutter has the blades or knives I2, which are disposed in parallel vertical planes and connected together by an intermediate bridge-piece, I4, which is preferably made orformed integral with the cutters. The alternate vertical edges of the blades or knives l2 are extended beyond the plane of the corresponding edge of the opposite blade, as at i5, and these extended edges are beveled in the same horizontal plane, so that they will properly act on t-he work or product. rllhe blades or knives of the cutter are tted and clamped betweenfiat horizontal disks I3,

which are iitted on the upper end of the shaft t' of the cutter, and these disks are rigidly and detachably secured or held on'the shafts by suitable mechanism, my preferred form of which I will now describe. The upper end of the vertical shaft t' of each cutter is' exteriorly screw-threaded, and the lower disk, I, is provided with'a base, i', of less di-r ameter than the disk, and which is arranged on the under side of the same. This base 'i' has a central threaded aperture,through which the threaded end of the shaft t' passes, and the said base and the lower disk, I3, are held against rotation on the shaft by the threads thereof engaging those of the base. The blades orknives bear on the lower disk,I3,and the upper disk is pressed against the blades to clamp the latter between the upper and lower disks by means of a nut, it, which is screwed on the upper extremity of the shaft i. The shaft t' of each cutter has a belt-pulley, i2, over which passes a suitable belt to rotate the shaft,to thereby drive the cutter, and each shaft is'j ournaled in suitable bearings, which are rigidly aixed in .the bars b b of the swinging frames. The lower disk or base, i', of the cutter rests upon the upper bearing of the shaft, and it is of sufcient thickness to elevate the cutters above the plane of the upper edge of the pattern G2 to properly act on the work and prevent cutting the said pattern. The cutting-edges of the blades are extended or projected beyond the peripheries of the disks I, and the lower disk of each cutter rides or bears against the pattern, so that the cutters are guided and controlled thereby. .The bearing h of the driving-shaft h is connected at h3 to the foot-lever O by means of asuitable cord, strap, or chain, H', whereby, when the carriage E is to be moved forward, the wheel H is brought into engagement with the gear-track e2 by depressing the foot-lever.

J designates a cord or strap secured to the forward side pieces, j', of the frame F, and thence runs over the pulley d', and is provided at its ends with a weight, j, the object of which is to draw the carriage back to its normal po sition after the gearing has been disconnected.

The operation of my device is as follows:

The wood to be cut or shaped is placed bef tween the clamp and pattern G G'2 while the 'lever C is elevated, afterwhich it is lowered latter, it will be understood, rests, when in its normal position, at a point slightly above the sliding rack. Power is then applied to the band-pulley HZ on the shaft h, which rotates the gear-wheel H and `draws the carriage E rearwardly at any desired speed. The lower disks, I3, of the cutters are pressed continually against the xed pattern G2, and follow the configuration of the same, while thero` tary knives act upon the block to mold the same into a shape conforming to rthe. configuration .of the pattern. complished in any desired number of move ments of the carriage, the cutters being prevented from cutting too deeply into the wood between the patterns by the washers i* on the* cutter-heads coming in contact with the lower pattern, as is obvious. After the carriage has been fed or moved a sufficient distance to permit the cutters to operate upon the work throughout its entire length the treadle is released to permit the swinging frames to be withdrawn from the carriage and the drivingshaft to be elevated, and thereby throw the gear-wheel thereon out of engagement with the rack on the carriage. Vhen the gearwheel isl thus disengaged from the carriage, the weighted cord J draws the carriage rearwardly,

`and thereby returns the carriage to its normal position.

I do not limit myself to the exact form and construction of the several parts herein shown and described as an embodiment of my invention, as it is obvious that changes and modifications may be made without departing from the spirit or sacrificing the advantages thereof.

Vhat I claim, and desire to secure by Letters Patent, is*

1. In a wood-working machine, the combination of an endwise-movable carriage having the pattern and a clamp by which the work is held, the swinging frames arranged on opposite sides of the line of movement of the carriage and having the cutters, the springs connected with the said frames for normally holding the latter out of the path of the carriage,

and a lever connected by intermediate devices with the swinging frames to simultaneously move the same in opposite directions,substan tially as and for the purpose set forth.

2. In a wood-working machine, the combination of an endwise-movable carriage having Thisresult may be ac- IOC IIO

the pattern, the swinging frames arranged on opposite sides of the line of movement of the said carriage and having the rotary cutters liournaled therein, the springs connected to the frames near their free ends for normally holding the frames out of the path of the carriage, the guide-pulleys journaled on the frame of the machine, a swinging lever arranged out of the path of movement of the frames, and counections intermediate of the lever and the frames and passing over the pulleys, substantially as described.

3. In a wood-working machine, the combination of the swinging frames carrying the cutters, a sliding carriage adapted to travel between the said frames, a lever connected with the frames for moving the same in opposite directions simultaneously, the cutters carried by the frames, a movable bearing connected with the lever, to be operated thereby simultaneously with the movement of the frames, and a driving-shaft mounted in the said bearing and adapted to be thrown into engagement with the carriage by the movement of the bearing simultaneously with the inward movement of the swinging frames toward the carriage, substantially as and for the purpose set forth.

4. In a wood-working machine, the combination of an endwise-moving carriage having the 'pattern and a fixed rack, the swinging frames carrying the cutters, a lever connected lwith the frames for simultaneously operating them, a pivoted bearing connected with the lever by an intermediate device to be elevated and depressed thereby, and a driving-shaft journaled in the said bearing and having a pinion adapted to be thrown into and released from gear with a rack on the said carriage and thereby actuate the latter, substantially as de scribed, for the purpose set forth.

In a wood-working machine, a frame having a central longitudinal beam provided with a 'guide channel or groove, in combinalion with a sliding carriage working in the said channel or groove and carrying the pattern,the swinging pivoted frames arranged on opposite sides of the said carriage and having the cutters journaled therein, the springs connected with the swinging frames for normally holding the latter out of the path of the earriage, a lever connected with the frames for simultaneously moving the same,v a pivoted bearing connected by an intermediate device with the lever, and a driving-shaft journaled in the bearing and adapted to be thrown into gear with the carriage when said bearing is moved on its pivot by the lever, substantially as and for the purpose set forth.

6. In a wood-working machine, the combination of a table or frame having the guidepulley d', a sliding carriage carrying a pattern and a fixed rack, the movable frames disposed on opposite sides of the line of movement of the carriage and provided with the cutters, thelever arranged outlof the path of the frames and connected with the same, the movable bearing connected with the lever, a drivingshaft journaled in the bearing and having a gear-wheel adapted to be thrown into gear with the rack on the carriage, and a weighted cord passing over the pulley d and connected with the carriage for returning the same to its normal position when the driving shaft is thrown out of gear with the earriage,substan tially as and for the purpose set forth.

7. In a wood-working machine, a sliding carriage having the fixed frame provided with the end standards, a fixed pattern on the said carriage arranged between the -end standards, a sliding clamp arranged above the pattern and connected with the end standards to be guided thereby, and a lever pivoted to thc frame and loosely connected to the clamp to operate the same, substantially as described, for the purpose set forth.

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

VARREN R. BRIGGS.

Witnesses:

ALBERT G. AVERY, A. D. AUsTrN.

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