US433080A - Wood-working machine - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

E. J. HEULE & D. CAMERON.

WOOD WORKING MACHINE.

No. 438,080. Patented July 29,1890.

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UNITED STATES PATENT OFFICE.

EVERETT J. IIEULE AND DONALD CAMERON, OF MENASHA, VISOONSIN.

WOOD-WORKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 433,080, dated July 29, 1890.

Application filed March 3, 1890. Serial No. 342,354. (No model.)

To (LZZ whom it may concern:

Be it known that we, EVERETT J. IIEULE and DONALD CAMERON, citizens of the United States, residing at Menasha, in the county of WVinnebago' and State of Visconsin, have invented a new and useful Improvement in WVood-lVoi-king Machines, of which the following is a specification.

Our invention relates to an improved ma chine for cutting the stretchers of chairs to a determined uniform length and for forming a circular tenon upon each end thereof; and it consists of an arrangement of one or more saws, an automatic device for feeding the stretchers to said saws and to the tenon-formin g mechanism, one for presenting the stretcher to and for firmly holding it while being acted upon by said tenon-forming mechanism, one for advancing and receding the tenon-forming mechanism to and from said stretcher, and also one for the release of said stretcher and for its delivery from the machine.

The machine here illustrated and described, although designed for use in preparing turned chair-stock, the legs, stretcher-s, and spindles for theirparticular department,is also adapted for use in fitting other articles of a similar nature which are required to be of uniform length and their ends to be uniform in size and contour, said ends being like or unlike, as their intended purpose demands.

The difierent parts of the machine required to be so are made adjustable, thereby adapting each machine for operation upon articles of different length and diameter and for the chucks or cutter-heads containing cutters for fitting chair-stretchers. Other tools maybe substituted as the work to be done demands, thereby adapting the machine for fitting a large variety of articles for their particular use.

Figure 1 is a plan view of the machine as it appears inoperation when preparingstretchers for entering legs of chairs, the several counter-shafts, with the cams and levers operated by them, being omitted, that the clear- ,ness of view of more essential parts may not be impaired. Fig. 2 is a vertical and longitudinal section upon the line 1 1. of Fig. 1 and including the shafts, &c., named as being omitted in Fig. 1. Fig. 3 is a transverse ver tical section upon the line 2 2 of Fig. 1, and 3 3 of Fig. Fig. i is a plan of a part of the lower portion of the frame, showing the arrangem ent of the shafts, pulleys, cams, levers, dues, which give motion to the mechanism here described. Figs. 5, 6, 7, S, 9, 10, and ll are detail views.

Similar letters of reference indicate corresponding parts in the several views.

The working parts of the machine are supported by a frame-work A, which may be of anysuitable construction. A are girts thereof, upon which the operating-shafts of the machine are journaled; A, a cross-girt, supporting fulcrums of the operating-levers; B, the main driving-shaft; C and D, countershafts; E, the pulley, by which shaft B is driven; F F, pulleys on shaft B, from which the saws and tenon-formin g cuttersare driven; l), a small pulley on shaft 13, driving the counter-shaft C; c and d, pinion and gear, by which shaft D is driven; G, a saw-arbor; G, saws thereon; H II, shafts, each having two sprocketwheels h h, respectively, secured thereto, said wheels carrying the chains I; J, a trough supporting said chains, the edges of whose sides are slightly higher than the chain, whereby the articles carried by the chains are permitted to slide upon said edges; and I, fingers of thechains, by which said articles are carried along.

K K are arbors, each having upon their inner end a cutter-head K, adapted for fitting the chair-stretcher i or other article to be operated upon; L, a bed-piece having ways L, upon which is fitted to slide the platen M, from which extend arms containing the journal-boxes N, and upon which is also secured the foot of the arms 0, which arms have the jaws 0 0 therein; and P, a shaft, upon which the lower end of the jaw-pieces o are secured, and upon which said jaws are simultaneously raised for grasping the pieces 2'.

Q Q, R R, and S are cams upon shaft D,

which, acting upon their respective levers q q, "r r, and 5, through the medium of their several connecting-rods q q, r r, and s, operate parts as follows: The rods q q, connecting with the shaft P, raise it, and with it the jaws 0. The rods 0* 1', connecting with heads K. A spring it rests on said piece the journal-boxes N, advance the cutterheads'K toward the stretcher i, and the rods 5, connecting with the ratchet-wheel device near the end of the shaft 11, imparts an intermittent rotary motion to said shaft.

' U is a bar hung to the gallows NV.

u u are springs or thin pieces of steel secured to the bar U and adapted in form to bear upon pieces 1' during their passage between the saws and along upon the chain 1, except at near the axial line of the cutterheads K, where they are bent into a bow for the purpose of allowing the piece vito be raised and grasped between the jaws 0 0 while being operated upon by the revolving cutterduring the cutting operation.

The bar U is adjustable in a vertical direction by means of screws w, thereby adapting the space from chain-trough to spring to re ceive articles varying in diameter.

Fig. 6 gives a view of the rear side of one of the bed-pieces L, the platen M arranged to slide thereon, the arms 0 and arms surmounted by the journal-boxes N, Fig. 5,giving a plan view of the outer end of said parts. The bed-pieces L are secured upon the'side wings a of the frame, and the platen carrying the arms 0 and boxes N adapted for longitudinal movement upon said bed-pieces by means of the screw m, whereby the cutterheads K and jaws 0 0 of each wing maybe moved nearer to or farther from each other, thereby adapting their location to articles of different length. The purpose of the jaws 0 0 is to receive the pieces to be operated upon by the cutter-heads K from the chaincarrier and present them to said cutter-heads. They are made adjustable in a horizontal direction and also vertically, so as to present articles centrally to them, whether of large or small diameter, or those having one end large and the othersmall, which could not be done if the articles were operated upon while resting upon the carrier-chains or upon the trough J and against the fingers I.

The jaws 0 are made adjustable horizontally and vertically at right angles with the axial line of the cutter-heads K by means of the screws 0 o" for the purpose of their receiving articles of different diameter and forpresenting said articles to the cutter-heads in a corresponding axial line. The throw or elevation of the jaws 0 may be made more or less for grasping articles of different diameter in various ways, one of which is shown at the fulcrum q of the lever q, the lower end of said fulcrum being provided with a threaded portion, which passes through the cross-girt A and is provided with two nutsone below and one above said girt whereby said fulcrum may be made higher or lower, and thereby reducing or increasing the extent of the elevation to which said jaws are thrown.

A slight degree of compression may-be applied to the article to be held between the jaws 0 0' for the purpose of securely holding them, and also for providing for slight variations in their diameter in any convenient way, one of which is illustrated in Fig. 2, where aspringor awasher q', of india-rubber, is placed above the lower nut upon the threaded portion of the fulcrum.

The shaft P is provided at each end thereof upon the inside of the frame with guides 19 p for preserving the vertical movement of said shaft.

The cutter-heads K are arranged to move automatically toward each other, as before described, by means of the action of the cams R upon the short arm of the levers *r, their longer arms being connected by the rods '1' with the end journahboxes N, whereby the depression of the short end of said lever slides the shaft K of each wing inward and presents the cutter-heads K to the piece 71 for their action thereon. The cutter-heads may be withdrawn from action upon the piece i by means of the resilient action of the spring 0" upon the lever r or by a weight or spring arranged in any convenient manner.

In Figs. 7, 8, 9, 10, and 11 are shown views of the several parts comprising the ratchet mechanism 'for producing an intermittent movement of the chain 1. A side view of the device is given in Fig. 11. The plate V, a plan of which is shown in Fig. 7, is mounted loosely upon the shaft H near one end thereof, and is retained in the desired adjustment thereon by means of a bolt or ascrew z, entering the frame A through the slot 2.

Fig. 9 is a top view of the plate'V and shows a slot '0 in its upper end. A dog 1; is

I arranged to slide freely up and down in said slot. Fig. 8 isan edge view of plate V, showing also dog c'and spring 1;.

In Fig. 10 is seen a plan of a ratchet-wheel X, having siX slots cut into its circumference at equal distances from each other, and which are adapted to receive the thin front edge of the dog 2). This wheel is keyed to the shaft H and revolves with it and the sprocketwheels h thereon. The number of the above slots in the wheel X is not essential, except that it be sufficient for the easy Working of the ratchet device, and that it bear a definite distance from each other that a movement of.

one notch of the wheel X will bring each of said fingers at a uniform distance from a determined point.

The irregular-shaped plate Y is placedloosely upon the shaft H, (a collar H retaining it from longitudinal movement thereon,) and has upon its side adjoining the wheel X a pawl y, adapted to engage with a notch of the wheel, (31 beinga spring bearing against said pawl and aiding its entrance into a notch,) and to thereby turn the wheel X, and also the sprocketwheels h, as each revolution of the cam S raises the lever s and the rod 8', which plate V and arranged to act upon the dog 0,

causing its speedy entrance into a notch of said wheel.

In providing for the release of the dog 1' from one of the above notches preparatory to another movement forward of the chain, a latch 91" is pivoted upon the plate Y in such a position and is of such form that the upward movement of the rod 3 will cause the upper or short end of said latch to engage with and release said dog from the notch, while upon the rods downward movement, the dog having fallen into the succeeding notch, the short end of said latch is depressed by the dog, permitting it and the plate Y to return to their natural position preparatory to another upward movement of the rod .9. A movement in a circumferential direction is required to be given to the plate Y slightly in excess of the distance upon the wheel from one notch to another, in order to provide for the action upon the dog 1: of said latch.

The purpose of the adj ustability of the plate V with its dog c is to provide means for the stoppage of the fingers I of the chains at a point nearer to or farther from the axial line of the cutter-heads K, thereby adapting the position of the fingers of the chains to receive and present to the cutter-heads articles of large or small diameter. This is effected by raising or lowering the end of the plate containin g the slot .2. Lowering said end carries the dog 0; forward, and raising it carries it backward, said movements providing means whereby the point at which the chain-fingers stop at the end of an intermittent movement may be varied, thereby adapting the machine for articles of large or small diameter and to properly present to the jaws o 0 said articles for the action thereon of the cutter-heads K. The above adjustment of the plate V demands a corresponding increase or decrease in the length of the rod 5, which we provide for by making said rod in two sec tions, providing one section with a right-hand and the other with a left-hand thread, and connecting said sections with a nut s, having corresponding threads, as shown.

The plate V, with its dog r therein, may be dispensed with, when desired, in the opertion of the machine in nearly all kinds of material, and the position at which the chainfingers stop be governed by the lengthening or shortening of the rod 3, as the jaws 0 0, being \I-shaped, will receive the pieces from the fingers of the chain-carrier and correctly center them, even if perfect accuracy in their point of stoppage is not attained.

A roller, as Q R S, is applied to each lever operated upon by a cam for the purpose of reducing friction upon the surfaces coming in contact.

It is evident that the several cams here named may be so made as to dispense with the use of springs or weights for producing the return movement of the cutter-heads, the fingers 0 0 and the ratchet mechanism making each one a positive movementin both directions, which we deem as within the scope of our invention.

The saws, of which one or two maybe used, as the material requires, (one and a fixed gage being better adapted for cutting up from long stuii',) are adj iistably secured upon the arbors by means of set-screws g in their collars, or they may be secured in any convenient manner at the point required for cutting the length desired. 1

The operation of the mechanism is as follows: The attendant placing a stretcher or other article upon the chain-carrier at the front end of the machine, it is carried forward by the intermittent movement imparted to it, passing the saws and receiving action therefrom, taken up by the jaws 0 0 and presented to the cutter-heads K K, said heads ad vaneing to and acting thereon. The jaws 0 0 drop the article upon the carrier, when it is carried forward and another one presented in a like manner, continuing said operation as each finger of the carrier approaches the vertical plane of the cutter-heads, all of said. movements being automatic in action and requiring an attendant only for placing the articles upon the carrier-chain.

Having described our invention, what we claim, and desire to secure by Letters Patent, is

1. The combination, in a wood-working machine, of an endless carrier having fingers thereon at equal distances from each other, said carrier having a straight channel or trough for its support and guidance, being arranged to receive and hold a chair-stretcher or other like article thereon, and said carrier having an intermittent forward movement, one or more saws, two r'evoluble cutter-heads, jaws for receiving from said carrier, holding, and presenting said article to the cutter-heads, and mechanism for advancing said cutterheads to and receding them from said article, and also for releasing the jaws therefrom and returning said article to the carrier, all combined and operating substantially as described.

2. In awood-working machine, the combination, with an endless carrier having fingers at equal distances from each other, said carrier having a straight channel or trough for its support and guidance, being arranged to receive and hold a chair-stretcher or other like article thereon, and said carrier having an intermittent forward movement, of the cutter-heads K K, jaws for receiving from said carrier, holding, and presenting said article to the cutter-heads, and mechanism for advancing said cutter-heads to and receding them from said article, and also for releasing the jaws therefrom and returning said article to the carrier, substantially as described.

3. The combination, in a wood-working machine, of an endless carrier having fingers thereon at equal distances from each other, said carrier having a straight channel or trough for its support and guidance, beingarranged to receive and hold a chair-stretcher or other like article thereon, two revoluble cutter-heads, jaws for receiving from said carrier, holding, and presenting said article to the cutter-heads, and mechanism for advancing said cutter-heads to and for receding them from said article, and also for releasing the jaws therefrom and returning said article to the carrier, a ratchet-wheel mechanism for producing an intermittent forward movement to the aforesaid carrier, comprising a shaft therefor, the plate V, having the dog'u' therein mounted on said shaft, and means for securing said plate at various points of circumferential adjustment thereon, the ratchet-Wheel X, the plate Y, pawl y, latch y, and the opcrating-rod 8, said rod being provided with means for the increase or decrease of its length, substantially as set forth.

4. In a woodworking machine, the combination of the bed-pieces L L, having ways thereon, the platens M M, movable longitudinally on said ways and having means for their adjustment thereon, said platens each having the journal-boxes N N projecting therefrom, the shafts K, having the cutterheads K journaled in said boxes, the arms 0 O, secured upon said platens, each arm being provided with a jaw, as 0 0, each jaw 0 being adjustable in a horizontal and vertical plane at right angles with the shafts K, and the jaws 0, movable in a vertical direction one with the other, substantially as described.

5. A wood-working machine comprising the shafts H H, sprocket-wheels h h h h, carrier-chains I I, having the fingers I I, the springs to u 20, arranged above said chains, one or more saws, as G, cutter-heads K K, jaws 0 0 0' 0', the jaws 0' 0 being provided with means for grasping and holding an article between said jaws and the jaws 0 oand also for releasing said grasp, a ratchet mechanism for imparting an intermittent forward motion to the carrier-chain, and also mech anism for advancing the cutter-heads toward and for receding them from each other, all combined and operating substantially as described.

EVERETT J. HEULE. DONALD CAMERON. Witnesses:

M. M. SCHOETZ, C. W. LLOYD.

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