US258852A - Spoke tenoning and chamfering machine - Google Patents

Description

(No Model.)- QSheets-Sheet 1..

W. H. DUANE-"8t G. W. BUGBEE.

SPOKE TENONING AND GHAMFERING MACHINE.

v No. 258,852. Patented, May 30, 1 882.

WITNESSES a JNVEJVTORS N. PETERS. Plmlw LiflwgrApim Wavhhlgton. D. c.

(,NoModel.) I 4SheetsSheet 2,

W. H. DOANB & G. W'. BUGBEE.

SPOKE TBNONING AND OHAMFERING MACHINE; 258,852.

Patented May 30, 1882.

(No Model.) 4 'Sh eets-Sheet 3.

W. H. DOANE- 8?; Gtw- BUGBEEJ .SP OKE TBNONINGiAND GHAMFERING MACH I NE;

No. 258,852. Patented May 30,1882.

WITNESSES UNITED STATES PATENT OFFICE.

WILLIAM H. DOANE AND GEORGEWP BUGBEE, or CINCINNATI, OHIO.

SPOKE TENO NING AND CHAMFERING MACHINE.

SPECIFICATION forming part of Letters Patent No. 258,852, dated. May'30, 1882.

Application filed April s, 1882. (No model.)

To all whom it may concern Be it known that we, WILLIAM H. DOANE and. GEORGE W. BUGBEE, citizens of United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Tenoning and Mitering Machines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it aptenoning cutter-heads and a pair of spoke-ta poring cutter-heads, mounted in succession, to first tenon and then taper the-spoke.

It further consists in the use of endless feedchains for feeding the spokes past and through between the respective cutter-heads It further consists of various minor combinations of mechanical devices for suitably clamping and feeding the spokes, and for conveniently stopping and starting the spokefeeding devices.

In order that our invention may be clearly understood, we have illustrated in the annexed drawings and will proceed to describe the best form thereof at present known to us as regards its applicability to tenoning and tapering spokes.

Figure 1 is a side elevation of our improved machinefortenoningandtaperingspokes. Fig. 2 is a front elevation of the same. plan view thereof. Figs, 4 and 5 are detailed views on a larger scale of portion of the spoke carrying or feeding devices.

The sameletters of reference are used in all .the figures to designate identical parts.

The various operative parts of the machine are mounted on a substantial frame, A, on one side of the upper portion of which are arranged ,the two slides B and 0, one above the other,

which respectively carry the tenoning cutterheads B and O, fixed on the overhung ends of the horizontal shafts B and O, which are journaled in suitable bearings on said slides B and Fig.3 is a ways of frame A, and each is engaged by' a screw, B and 0 respectively, swivelingly connected to the main frame A, so that said slides may be properly adjusted and held in position by said screws. On the other side of the upper portion of the main frame are arranged the slides D and E, one above the other, which respectively carry the spoke-tapering cutterheads D and E, fixed on' the overhung ends of the horizontal shafts D and E, which are journaled in suitable hearings on the slides D and E, and are provided with pulleys D and E on the other'overhung ends for driving them.

Screws D and E swivelingly connected to the main'frame and engaging nuts on the slides DandE, are used for adjusting the slides and holding them in position. Extra clampingbolts may be used to firmly clamp the different slides to the main frame after they have been properly adjusted by the adj listing-screws. The tenoning cutter-heads B and O are driven by a belt, X, from a pulley, F, on the counter-shaft F, mounted on the lower portion of the main frame A. This belt passes from said pulley F over the pulley of cutter-head O,

thence downward and under belt-tightener pulley G, thence upward over pulley B of cutter-head B and'back to pulley F, so as to drive the cutter-heads B and O to cut in the same direction. The spoke-tapering cutter-heads DfandE. are driven in like manner by a belt, Z, from a pulley, F on counter-shaft F, the belt Z passing from said pulley over pulley E of cutter-head E, thence downward and undera belt-tightcner pulley, H, thence upward overpulley D of cutter-head D, and back to' pulley F The belt-tightener G isjournaled in a weigh t-- ed yoke, G, pivoted on the main frame, and belt-tightener H is journaled in a similar weighted yoke, H, also pivoted on the main frame. Thus the belts X and Z may be kept under suitable strain under varying adjustments of the cutter-head-carryin g slides. The spokes are carried and fed through between the tenonin g cutter-heads, and afterward through between the spoke-tapering cutter-heads, by

meansoftwoendlesslink-chains,Iand K,which respectively travel around sprocket-wheels I. I and K K, keyed to the shafts I and K", respectively,'which are mounted in hearings on the bracket-frame L, fixed to and supported upon ashelf or bracket, a of the main frame and in front of the cutter-heads. The spokecarrying chains are arranged between and move respectively in close proximity to the two parallel sides L and L of the bracketfranie L. These sides L and L are constructed or provided with top bars, I and l, the ends in front of the tenoning cutterhead of which are curved downward to about the center line of the bracket-frame, as clearly shown in Fig. 2, which line is in the plane of the axes of the shafts 1 and R The curved portion of these top bars is eccentric to the sprocket-wheels I and K, and gradually recedes from the center thereof until it reaches the horizontal portion of the top bars. Each chain is provided with a. number of dogs, 1 and K respectively, arranged in pairs on the respectivechains, against which dogs the spokes are placed at a point where the dogs begin to pass the lower ends of the curved portions of the top bar, I and 1 On being moved upward by the dogs and chains the spoke is gradually forced away from the chains by the eccentric portion of the downward curve of the top bars, and is clamped between said top bars and the spring-clamps is, mounted on adjustable arms or brackets is of the dogs K and L These spring-clamps consist of a bolt fitted in a socket in the arm k, and encircled by a spiral spring between the head of the bolt and the bottom of the socket, as best shown in Fig. 4, the shank of the bolt passing through the bottom of the socket, and being provided with a nut by which the tension of the spring may be regulated to some extent. The arms k, in which these springclamps are mounted, are adjustable on the dogs K and L in order to provide for the feeding of different sizes of spokes. Each dog is constructed with a laterally-projecting stud, carrying an anti-friction roller, which moves in a groove formed in the side of the bracketframe, so as to prevent the dogs from being moved upward by the eccentric portion of the curved ends of the top bars, I and Z and to cause said dogs to move forward past the cutter-heads in a horizontal direction. The springclamps should be so adjusted on the dogs that on placing a spoke upon them at the lower end of the curved portion of the top bars, L and I L, the spoke will snugly fit between said curved bars and the spring-clamps, so that on carrying the spoke forward it will be firmly forced down upon the top bars, l 1 by the spring-clamps, and firmly held down during its whole movement past and through between the two sets of cutter-heads. The rear ends of the top bars, 6 and Z terminate just beyond the spoke-tapering cutter-heads, as best seen in Fig. 2, so that the spoke will be released from between the bars and springelamps immediately after it has been tapered and fall from the dogs on the carryingchains soon after by its own gravity. The top bars, 1 and 1 can be vertically adjusted to some extent on the sides of the bracket-frame L.

In order that the spokes may be accurately placed on the dogs with respect to the cutterhcads, a guide, M, is fixed to a laterally-projecting stud or bar, 112, of bracket-frame L. The guide M is adjustable. r

In placing a spoke on a pair of dogs the end to be tenoned and taperedis pushed up against guide M, previously adjusted with respect to the cutter-heads,to cause the end of the spoke to pass to the desired extent in between the tenoning cutter-heads for cutting the tenon to the desired length.

To prevent the action of the cutter-heads from pushing the spoke endwise in either direction, a dull-edged rib, l, is formed on the top bar I, which will slightly embed itself in the wood of the spoke by reason of the springpressure of the spring-clamps upon the spoke, and hold the latter steady during its movement through between the cutter-heads.

The tenoning cutter-heads may be of the ordinary construction; so, also, the spoke-tapering cutter-heads; but the latter should be so constructed and arranged as to taper both the end of the tenon of the spoke and the shoulder of the tenon.

The bearings of the shaft 1 are so arranged in the sides of the bracket-frame that they may be horizontally adjusted in order to stretch the chains to the required extent. The shaft K turns in stationary bearings, and is provided with a worm-wheel, N, in order that it may be driven with the required slow motion by the worm O on the upright shaft 0. The worm O is feathered to shaft 0; but the latter is capable of sliding up and down to a limited extent through the worm. At its lower end shaft 0 is supported in a step-bearing formed on the treadle P,near the base of the machine. A friction-disk, is keyed to shaft 0 at a point which will bring it in contact with the friction-driver F on counter-shaftF when shaft 0 is allowed to descend to its lowest position. Friction-driver F will then drive friction-disk O and thereby impart the required rotation to shaft 0 for driving the carrying-chains I and K through the intervening gearing heretofore described. By depressing treadle P shaft 0 may be lifted sufficiently to disconnect its friction-disk from the friction-driver on the counter-shaft, so as to stop the rotation of the shaft 0 and the movement of the carryingchains. The treadle may be locked, when depressed, by spring-latch 11, so arranged as to automatically engage or book over the footpiece of the treadle.

We have described the improved spoke tenoning and tapering machine in the most com plete form at present known to us. It should be understood that some features of it might be wholly omitted and some parts replaced by other means that would readily suggest themselves to a person skilled in this branch of the useful arts without an evasion of the invention. Thus the means for gradually clamping the spoke tighter and tighter to the spoke-supporting top bars until it reaches the horizontal portion thereof might be omitted, and instead thereof the spoke introduced forcibly between said bars and the clamps of the dogs at the moment of inserting it. I

While it is preferable always to guide-the dogs, yet the guides might be dispensed with. The spring-clamp may also be greatly varied in construction; nor is it essential that said clamps should be mounted on and move with the feeddogs. The feed mechanism shown and described may be used with advantage on machines provided with only one cutter-head or one set of cutter-heads,whether used for spoketenonin g purposes or for any other purpose.

Fig. 6 illustrates the tenoned end of a spoke as it appears after it has been operated on by this machine.

It will be observed that the faces of the main frame A, on which theseveral cutter-head slides are mounted, diverge from the top downward. The effect of this taper or divergence is that the cutter-heads B and E cut somewhat in advance of the cutter-heads O and D, and that this difference in the lines of cuts is increased by increase ot'separation between the members ofeach pair of cutter-heads. Although we pre-' fer to construct the top bars, I and 1 with eccentricdownwardly-curved portionsat the feeding-in end of the machine, that is not essential, because mere ascending cam grades or inclines may be used instead of theeccentricd'ownwardly-curved portions. The ends of these top bars at the discharge end of the machine may terminate with descendinggrades, so as to gradually release the spoke.

Having thus described our invention, what we claim is 1. The combination, substantially as before set forth, of the tenoning cutter-heads, the spoke-taperingcutter-heads, and the feed chain or chains provided with pairs of dogs for feedin g spokes through between the respective cuttor-heads.

2. The combination, substantially as before set forth, of the feed chain or chains, the fixed structed at one end with downwardly-curved eccentric portions, the feed chain or chains, and dogs on said chains, provided with springclamps.

4. The combination, substantially as before set forth, of the spoke-supporting top bars, constructed at one end with downwardly-curved eccentric portions, the feed chain or chains, the dogs on said chains, provided with springclamps and laterally-projecting antifriction guide-rollers, and the guides for said rollers.

5. The combination,substantially as before set forth, of the spoke-supporting top bar provided with a dull-edged rib, and the springclamps on the feed chain or chains.

6. The combination, substantially as before set forth, of the feed chain orchains, the wormgearing for driviu g the same, the upright wormshaft carrying a friction-disk, the counter-shaft provided with a friction-driver, and the treadle for lifting the worm-shaft to disconnect its friction-disk from the said friction-driver.

7. In a machine for tenoning and tapering spokes, a frame having diverging faces, upon which are mounted the four slides supporting the two set of cutter-heads, combined with said slides and cutter-heads,substantial] y as before set forth.

8. In a machine for tenoning and tapering spokes, the combination, substantially as before set forth, of the endless feed chain or chains, the fixed top bars constructed with ascending grades or inclines at the feeding-in end of the machine, and independent dogs on the chain or chains, whereby a spoke is first automatically gripped for holding it firmly in feeding it through between the cutter-heads, and y then automatically released and discharged.

In testimouy whereof we affix or signatures in presence of two witnesses.

WM. H. DOANE.

GEORGE W. BUGBEE.

Witnesses:

SIMEON HARRIS, B. E; J. EILs.

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