US913769A

US913769A - Spoke-lathe.

Info

Publication number: US913769A
Application number: US44477308A
Authority: US
Inventors: La Fayette G Robinson; John J Meyers
Original assignee: Fay J A & Egan Co
Current assignee: J A Fay & Egan Co; Fay J A & Egan Co
Priority date: 1908-07-22
Filing date: 1908-07-22
Publication date: 1909-03-02
Anticipated expiration: 1926-03-02

Description

LA FAYETTE G. ROBINSON &J J. MEYERS.

SPOKE LATHE. AIPLIOATION FILED JULY 22, 1908.

Patented Mar. 2, 1909.

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LA FAYETTE G. ROBINSON &' J. J. MEYERS.

SPOKE LATHE.

APPLICATION TILED JULY 22, 1908.

Patented Mar. 2, 1909.

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LA FAYETTE G. ROBINSON &.J. J. MEYERS.

SPOKE LATHE.

APPLICATION FILED JULY 22, 1908.

Patented Mar. 2, 1909.

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UNITE s AThfi PATENT OFFICE.

LA FAYETTE G. ROBINSON, OF NEWPORT, KENTUCKY, AND JOHN J. MEYERS, OF CINCINNATI, OHIO, ASSIGNORS TO J. A. FAY & EGAN COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF WE ST VIRGINIA.

SPOKE-LATHE Specification 01" Letters Patent.

Patented March 2, 1909.

To all whom it may concern:

Be it known that we, LA FAYETTE G. RoB- INSON and Jonn J Mnrnns, citizens of the United States, and residing, respectively, at 1 Newport, in the county of Campbell and i Stateof Kentucky, and at Cincinnati, in the county of Hamilton and State of Ohio, have jointly invented certain new and useful Improvements in Spoke-Lathes, of which the l following is a specification.

Our invention relates to spoke lathes, and has for its object the providing of new and improved means for governing the travel of the carriage and further for controlling the'rotation of the centers, in a machine of the character mentioned, and the invention will be readily understood from the following description and claims, and from the drawings, in which latter:

Figure 1 is a front elevation of our improved device. Fig. 2 is an end elevation of the same. Fig. 3 is a plan view of the same, partly broken away with the upper works removed. Fig. 1 is an end elevation showing the manner of mounting the belttightener pulleys for controlling the operation of the feed-screw. Fig. 5 is an irreg ular section of the same on the line 2 2 of Fig. 4. Fig. 6 is a detail in section on the line y of Fig. 4 showing the adjustment of one of the belt-tightener pulleys for controlling the operation of the feed-screw. Fig. 7 is a detail in section on the line a of Fig. 2, showing the manner of mounting the rotating member for driving the feed-screw; and, Fig. 8 is a side elevation of a spoke.

1 represents the frame or shears having guideways 2 on which the carriage 3 is moved back and forth by a ieed-screw i tl'ireaded in a threaded bearing 5 of the carriage and journaled in bearings 6 of the shears. A cutterhead 7 is mounted on the carriage and travels with the same and operates on the spokestock being turned, this spoke-stool: being held between centers 9 10 journaled on a vibrator-frame 11 which is pivoted at its lower end to the shears in usual manner. The vibrator-frame also carries centers 13 1 1 between which a pattern is placed. Gears 16 17 are on the centers 9 13 and are meshed by an intermediate gear 18 for turning said centers at equal speeds, gear 18 being on a shaft 19 j ournaled in the vibrator-frame and carrying a pulley 20.

The stock is out according to the shape of the pattern. The barrel a of the spoke, shown at b, (Fig. 8), is of con'iparatively small cross-section, while the head 0 of the spoke adjacent the hub-portion is of greater diameter, the diameter increasing abruptly at the throat (Z of the spoke. While the barrel of the spoke is being out we employ the fast forward speed of feed. We decrease the speed of forward feed when the throat of the spoke is reached, because oi" the greater diameter which must then be cut and because the head is to be cut oi polygonal cross-section. The cutter-head is fed lengthwise of the spoke-stock and the leed is obtained by means of a feed-screw which is turned in the direction oi -forward feed at two different speeds by means of two belts passing over pulleys of diflerent diameters, in manner to be presently described, and is also led in reverse direction for returning the cutter-head carriage to initial position, during which return the belts for eil'ecting the forward speeds are placed out of commission. The bolts for ei'l'ecting these forward speeds, it will be noted, are short. They are normally loose about their pulleys. The duty to be performed by them is heavy, and at the same time we initiate and control their duty positively and to delicate extent for cl'liciency in the quality and quantity of the product. It will be noted that the turning of the centers is controlled in unison with the control of the feed-screw. These means will now be described.

26 is the main drive-shaft operated by a pulley 27 and carrying a pair of pulleys 28 29, shown as stepped pulleys. It may also carry a pulley 30 slidable therealong in usual manner for operating a pulley 31 on the cutter-head shaft 32 journaled on the carriage. 35 36 is a pair of pulleys also shown as stepped pulleys. A belt 37 passes about the pulleys 28 35 and a belt 38 passes about the pulleys 29 36. These belts are normall loose about their pulleys. A belt 39 passes about a pulley -10 and a whey ll for driving the feed-screw, preierab y through a clutch 42. A belt 43 passes about a pulley 1-1- and the pulley 20 for rotating the centers. The

pulleys 40 44 preferably rotate with the pair of pulleys 36, the pulleys 35 36 40 and 44 being preferably secured together, as to a sleeve 45 which rotates about the stud 46 secured to the frame.

51 52 are belt-tightener levers, shown as levers of the first degree, pivoted on bolts 53 54 secured to brackets 55 56 secured to the frame. A link 57 is articulated with these levers at 58 59, connecting the levers for combined movement.

61 62 are belt-tightener pulleys adjustably secured at the other ends of said levers. Thus each lever is provided with a slot 63 in which a stud 64 is adjustably secured, the stud having a reduced shank 65 passing through the slot, a nut 66 screwing over the threaded end 67 of said reduced shank for forcing the shoulder 68 against the lever, the stud forming a journal for the tightenerpulley. This construction permits the tightener-pulleys to be adjusted toward and from the drive-belts for normally permitting them to be free from driving tension and for imparting the proper driving tension to either of said drive-belts for driving said feedscrew or centers at either given speed in the same direction.

71 is a lever pivoted at 72 to the frame and articulated with the link '57 at 73. A spring 74 connects with the outer end of the lever 71 at 75 and has an adjustable connection 76 with the frame. When the lever 71 is released, as hereinafter stated, the spring will aid in causing engagement of the tightenerpulley 61 with the belt 37. An upright 77 is articulated with the lever 71 at 78 and slides in a slotted bearing 79. at has a catch 80 which is engaged by a pin 81 on an arm 82 secured to a rock-shaft 83 which also has an arm 84 thereon which carries a weight 85. A catch 86 is pivoted on the arm 84 and catches on the frame. When the barrel of the spoke is being turned, the fast feed of the feed-screw is employed, the tightenerulley 62 being in engagement with the bet 38. The carriage carries a bar 90 which has a tapered contact-face 91 arranged to strike the upright 77 for releasing the catch 80 when the cutterhead is at the throat of the spokestock for causing contact of the tightenerpulley 61 with the belt 37, thereby initiating the slow speed of the carriage and centers.

hen the carriage has traveled sufficiently far for the cutter-head to complete the cutting of the spoke, the face 92 of the carriage will strike the bolt 93 in the arm 94 for moving the slide 95 which has a trip 96 thereon for releasing the catch 86 and thereby shifting the tightener-pulleys into neutral position in the following manner.

An arm 101 is on the rock-shaft 83 and has a tapering face 102 thereon which engages an arm 103 on a rock-shaft 104 journaled in bearings 105 in the frame. A lever 106 is pivoted to the frame at 107 and is articulated at one end with the arm 103 at 108. At its other end this lever has a fork 109 received by an annular groove 110 of the clutch 42. An arm 111 is also carried by the rock-shaft 104 and has a bolt 112 therein which contacts the lever 71 in rear of its pivot for depressing its rear end, this depressing action taking place when said catch 86 is tripped. The tightener-pulleys are thereby swung into neutral positions for releasing the belts 37 38 from driving action. The neutral positions of the tightener-pulleys is maintained while the carriage is retracted, which retraction is accomplished by means of a belt passing over a pulley 113 on the lead-screw operated in suitable manner, the carriage at the end of its return movement striking the bolt 114 on the slide 95 for returning said slide 95 to initial position. he rock-sh aft 83 is then rocked, which causes the raising of the lever '71 by engagement of the pin 81 with the catch 80 and the engagement of the catch 86 with the frame for again causing engagement of the belt-tightener pulley 62 with the belt 38 and thereby initiating the fast forward feed of the cutter-head carriage. The rock shaft 83 may be rocked by the handle 115 or said rock-shaft may be rocked by power mechanism, indicated generally by the numeral 116, and which may be of the character of that shown and described in Letters Patent No. 389,157, granted Eeter Lesh, September 4, 1888, for automatic setting mechanism for spoke lathes. The arm 94 may also carry a bolt 117 adapted to strike a lug 118 on a safety-lever 119 on the rock shaft 104.

laving thus fully described our invention, what we claim as new and desire to secure by Letters Patent is:

1. In a spoke-lathe, means for driving the carriage feed-screw at different speeds in a given direction, comprising in combination a plurality of cooperating stepped pulleys re spcctively adapted for receiving belts normally loose thereabout, tightener-pulleys adjustable toward and from said belts and connected for combined movement, and means for automatically moving said tightener-pulleys for alternately tightening said respective belts.

2. In a spoke-lathe, the combination with a carriage and feed-screw therefor, of a plurality of cooperating stepped pulleys one of which has driving connection with said feedscrew for rotating the same in a given direction at different speeds, belts normal loose thereabout, tightener-pulleys connected for combined movement, means for adjusting said tightenenpulleys toward and from said belts, and means for automatically shifting said tightener-pulleys by said carriage.

3. in a spoke-lathe, the combination with a carriage and feed-screw therefor, of a plurality of cooperating stepped pulleys one of which has driving connection with said feedscrew for rotating the same in a given direction at different speeds, belts normally loose thereabout, tightener-pulleys connected for combined movement, means for adjusting said tightener-pulleys toward and from said belts, and means for automatically shifting said tightener-pulleys by said carriage for releasing'the one from belt-tightening position and bringing the other into belt-tightening position, and means operated by said carriage for shifting both said tightener-pulleys into neutral positions.

4; In a spoke-lathe, the combination of a bed, a cutter-head carriage traveling thereon, a feed-screw for causing the travel of said carriage, a rotatable member, driving means between said rotatable member and feedscrew, a plurality of pulleys for operating said rotatable member at different speeds in a given direction, a plurality of driving pulleys the respective pulleys thereof mate the respective pulleys of said first-named plurality of pulleys, driving belts normally loose about said respective mating pulleys of said plurali ties of pulleys, tightener-pulleys for said respective belts, means for adjusting said respective tightener-pulleys toward and from said respective belts, and means for automatically shifting said tightener-pulleys si1nultaneously by said cutter-head carriage, for effecting the rotation of said feed-screw, substantially as described.

5. In a spoke-lathe, the combination of a bed, a cutter-head carriage traveling thereon, a feed-screw for causing the travel of said carriage, centers for the spoke-pattern and,

spoke-stock, means for causing said centers to rotate in unison, a rotatable member, driving means between said rotatable member and said last-named means and between said rotatable member and said feed-screw, a plurality of pulleys for operating said rotatable member at difierent speeds in a given direction, a plurality of driving pulleys the respective pulleys whereof mate the respective pulleys of said first-named plurality of pulleys, driving-belts normally loose about said respective mating pulleys. of said pluralities of pulleys, tightener-pulleys for said respective belts, means for mounting and adjusting said respective tightener-pulleys toward and from said respective belts, and means for automatically shifting said tightener-pulleys simultaneously by said cutter-head carriage for effecting the rotation of said feed-screw and centers, substantially as described.

6. In a spoke-lathe, the combination of a bed, a cutter-head carriage traveling thereon, a feed-screw for causing the travel of said carriage, a plurality of cooperating stepped pulleys one of which has driving connection with said feed-screw for rotating the same at different speeds in a given direction, belts received thereabout, a pair of levers oi the first degree connected for combined movement at one of their ends, tightener-pulleys for said belts at the other ends of said levers, means for adjusting said tightener-pulleys on said last-named ends toward and from each other, and means for automatically shifting said levers by said carriage for automatically changing the speed of said feed-screw in a given direction.

7 In a spoke-lathe, the combination with the carriage, feed-screw therefor, and pattern and stock centers, of a plurality of cooperating stepped pulleys one of which has driving connection with said feed-screw and centers for rotating the same at difi'erent speeds in the same direction, belts received about said plurality of cooperating stepped pulleys, a pair of levers of the first degree connected for combined movement at one of their ends, tightener-pulleys for said belts at the other ends of said levers, means for adjusting said tightener-pulleys on said last-named ends to ward and from each other, and means for automatically shifting said levers by said carriages for automatically changing the speed of said feed-screw and centers in a given direction, substantially as described.

8. In a spokedathe, the combination with the carriage and feed-screw therefor, of a plurality of cooperating stepped pulleys one of which has driving connection with said feed screw for rotating the same at difi'erent speeds in the same direction, belts received about said plurality of cooperating stepped pulleys, a pair of levers of the first degree connected for combined movement at one of their ends, tightener-pulleys for said belts at the ends of said levers, means for adjusting said tightener-pulleys on saidlast-name d ends toward and from each other, means for auto- 1n atically shifting said levers by said carriage for causing release of one of said belts by one of said tightenerpulleys and tightening of the other of said belts by the other of said tightener-pulleys, and means for automatically shifting both said tightener-pulleys into neutral positions, substantially as described.

9. In a spoke-lathe, the combination with the carriage and feed-screw, of driving means for said feed-screw, a clutch between said driving means and feed-screw, a plurality of cooperating stepped pulleys one of which. has driving connection with said driving means for rotating said feed-screw at difl'erent speeds in the same direction, belts received about said plurality of cooperating stepped pulleys, a pair of levers of the first degree connected for combined movement at one of their ends, tightener-pulleys for said belts at the other ends of said levers, means for adjusting said tightener-pulleys toward and from each other, means for automatically shifting said levers by said carriage for causing release of one of said belts and the tightening of the other of said belts by said i our names hereto in the presence of two subtightener-pulleys, and means for automaticlscribing Witnesses.

ally shifting said levers by said carriage for LA FAYETTE G. ROBINSON. bringing said tightener-pulleys into neutral JOHN J. MEYERS. V 5 positions and releasing said clutch, substan- Witnesses:

tially as described. s HARPER. G. Ross,

In testimony whereof, We have subscribed I RICHARD DVCOAN.