US379405A - Dkevs - Google Patents

Description

(M'ode1.) 2 Sheets-Sheet 1.

W. H. MOANDREWS.

. DEVICE FOR CONVERTING MOTION. NO. 379,405. Patented Mar. 13, 1888.

u. PETERS. Pholo-Lithognpherv Washington. u a

(ModeL) 2 S'heets-Sheet 2.

. H. MQANDREWS.

DEVICE FOR CONVERTING MOTION. No. 379,405. Patented Mar. 13, 1888.

Int P9211601 N. PETERS. PhMn-Lifiwgnphur. Washington. D. C.

NlTE STAT S \VILLIAM H. BIOANDREVS, OF YOUNGSTOWVN, OHIO, ASSIGNOR OF ONEHALF TO ALBERT M. GERSTLE, OF SAME PLACE.

DEVlCE FOR CONVERTING MOTION.

SPECIFICATION forming part of Letters Patent. No. 379.405, dated March 13, 1888.

Application filed January 4, 1386. Serial No. 187,556. (ModeL) To all whom it may concern:

Be it known that I, \VILLIAM H. MOAN- nnnws, a citizen of the United States, residing in Youngstown, in the county of Mahouing and State of Ohio, have invented certain new and useful Improvements in Devices for Oonverting Motion, of which the following is a specification.

My invention relates to an improved means for converting a reciprocating into a rotary motion, and will be fully and clearly hereinafter described and claimed, reference being had to the accompanying drawings, in which Figure 1 represents aside elevation of the de- I 5 vice complete. Fig. 2 is a side elevation of the device separate from the rack, shaft, and supporting'frame, one of the outside geared covering-disks being left off, so as to show a side elevation of one of the grooved disks,

showing the groove and an outside side elevation of its lever-clutch. Fig. 8 is an end elevation of the supportingframe, with the shaft mounted in bearings thereon, showing a sec tion (on line a b, Fig. 2') through the racks, the

two geared coveringdisks and the two grooved disks, and the collars for keeping the disks in place on the shaft, showing also an edge view of portions of the two lever-clutches and a face view of the two lever-springs connected 3c to them. Fig. 4. is an inside side elevation of one of thelever-clutches, showing also an edge view of thelever-springconnected thereto. Fig. 5 isarear edge view of one of the leverclutches. Fig. 6 represents a portion of the construction shown in Fig. 2, showing one of the lever clutch keys in place within the groove in one of the grooved disks, the lever being separated from the key by a section through it. Fig. 7 is an end elevation, and Fig. 8 a front elevation, of a sewingmachine, showing my invention connected thereto. Fig. 9 is a detached side elevation of one of the grooved disks. Fig. 10 is an end elevation of the device complete. Fig. 11 is a central section through one of the geared coveringdisks. Fig. 12 represents a section through line 0 d, Fig. 9.

The object of my invent-ion is to remedy the objections incident to the use of the crankmotion by substituting for it a device whereby the power is communicated during the entire revolution at the periphery of the disk to which it is applied by means of racks or the mechanical equivalent of the racks, for giving the outside covering-disks a half-turn,or more or less, back and forth on the shaft, for pur- 5 poses which will be more clearly shown by reference to said drawings, in which-- 1 is a suitable frame for supporting the shaft 2. This shaft and frame may be made in any well-known way, the frame being provided 6Q with the usual hearings, in which the shaft 2 is mounted.

3 represents the base of the frame. It may be made in any desired form suitable for the purpose, and for some uses may be dispensed 6 with-for instance, when adapted for operat' ing a se\ving-machineas will be more clearly hereinafter shown.

The two inner disks, 4 and 5, are preferably made of east-iron, but any suitable material 0 may be used, and are rigidly secured to the shaft 2 by a key or other well-known means. Each is provided with an annular groove, 6, (see Figs. 2, 3, 6, 9, and 12,) the two inner walls of which are at right angles, or substan- 5 tially so, to the face of the disk. These grooved disks may be placed close together, back to back, substantially as shown in Fig. 3, or as far apart as may be desired, and the same mechanical action obtained.

The two lever-clutches or curved arms 7 are preferably made of iron or steel, and are each provided with a curved key, 8, adapted to lit nicely or closely in the grooves 6, so that alone they could be moved easily in the grooves back and forth. The keys 8 are either formed in one piece with the lever-clutches 7, which is preferable, or rigidly secured to them in any well-known way, and are located on the lever 7, so that the hollow portion 9 cannot touch the hub 10.

To the front of each of the levers 7 is a spring, 11, secured to a point near the key 8 by a screw, 12. This spring passes down close to and touches the hub 10, and is secured to 5 the opposite end of the lever 7 by passing into a slot, 18. At the lower end of each of the lever-clutches 7, on the side opposite to the keys 8 and annular grooves G, is an outwardlyprojecting pin, 14. (See Fig. 2, also Figs. 3 x00 and 5.) These pins 14 project one through a hole in the outer geared case, 15, and the other through a hole in the opposite outer geared case, 16. (See Fig. 3.) These outer geared cases, 15 and 16, are fitted to the shaft 2,so as to turn easily thereon, and are each provided with gear-teeth 17. (See Figs. 2, 3, 6, 10, and 11.) The collars 18 are placed on the shaft 2 between the frames 1 and the hubs 19 of the cases 15 and 16, for the purpose of keeping them in place when put together; but for some purposes they may be dispensed with, as the frame 1 may be made to touch the hubs and thereby hold them in place.

The peripheries 20 (see Figs. 3 and 12) of the disks 4 and 5 project outward, forming a flange, 21, to fit into an annular recess, 22, (see Fig. 11,) in the inner edges of the geared coveringcases 15 and 16, and are fitted so that the cases 15 and 16 may turn easily thereon, their object being to form a seat or cup to receive the flanges 21 for the purpose of keeping the edges of the disks exactly in place; but, as will be readily seen, in some cases they may be dispensed with.

A. double rackframe is illustrated, consistingof the ends23, curved to one side, asshown, so as to bring the rack 24c in position for its teeth to-engage with the teeth on the case 15, and the upper rack, 25, in position on the opposite side to gear in with the teeth on the case 16.

For convenience I have shown the double rack-frame as provided with a handle, 26, (see Fig. 1,) by which it may be operated by hand; but this handle 26 may be the piston-rod of a steam-engine or any other source of power for moving it; or it may be the connectingrod 27 of asewing-machine, (see Figs. 7 and 8;) or it may form a part of any device in which it is desired to converta reciprocating motion into a rotary motion. This rack is usually made of iron or steel; but it may be made of any other suitable material to adapt it to any use it may be designed for.

It will now be seen from the construction above described that a movement of the rack-.

frame and the racks 24 25 in the direction of the arrow 2) (shown in Fig. 1) will cause the geared disk 15 to turn in the direction of the arrow w, (shown in Fig. 1,) and the geared disk 16 to turn in the opposite direction, and that a movement of the racks in the direction of the arrow 00 will reverse these movements.

Reference being now had to Fig. 2, it will be seen that if the disk 15 be moved in the direc tion of the arrow Y it will cause the leverclutch 7, by means of its pin-connection l4 therewith, to turn with it in the same direc tion, and as the spring 11 bears against the hublO it keeps the key 8 exactly in the line or path of the annular groove 6, so that it is thus permitted to move freely and easily therein in this direction. hen the movement of the disk 15 is in the direction of the arrow 2, it. moves the lever-clutch 7 (also by means of the pin 14) in the same direction; but as the lever 7 does not and cannot touch the hub 10 it will rigidly lock the key 8 in the grooves 6, because a movement against the pin 14 in this direction will cause the upper side of the key 8 nearest the screw 12, as shown in Fig. 2, to bind or press firmly against the upper sideof the groove 6, while the under side near the opposite side-or end, Ishould say-of the key 8 presses with equal force against the lower side of the groove 6. This operation locks the key instantly and rigidly with so little lost motion that it is almost impossible to perceive it, and the greater the force exerted the more rigidly it is held. It also works silently and looks at any pointinstantly.

The disks 4 5 and 15 16 areidentical in their construction, the lever-clutches and their connecting parts being the same, except that the faces are in opposite directions and the action of one the reverse of the other, so that while the key of one lever clutch is locked and turning the shaft 2 the other key offers no resistance to the opposite movement of the opposite grooved disk, and the double lever-clutch thus works alternately without a perceptible break in the movement while turning the shaft 2.

In Figs. 7 and 8 I have represented my invention as applied to a sewing-machine for the purpose of showing how it may be adapted for that and other similar uses, and also for the purpose of showing a combination in which the base 3 is not required. By this construction the side pieces 28 of a sewing-machine would take the place of the side pieces 1. (Shown in Figs. 1, 3, 10.) At the top of the rack-frame may be connected a spiral spring, 29, having its upper end connected to the air der portion of the table 30, for counterbalancing the weight of the rack and connectingrod. By this means (there being no deadcenters to overcome and the power being always applied at the greatest leverage) the operator is not required to use either hand to start the machine, the foot on the treadle 31 being sufficient to start it and stop it (with the greatest case) at any point required.

I claim as my invention 1. In a device for converting motion, a shaft mounted in hearings in a supporting-frame, two disks, 4 5, rigidly secured to the shaft and provided with annular grooves, in combination with two curved lever-clutches, each having a key, 8, adapted to fit the grooves and prevent the levers from touching the hubs 10 of the disks, springs for keeping them in po sition, and pins 14, by which they are given opposite oscillating movements, whereby a movement in one direction will cause one key to bind in its groove while the opposite key is slipping easily in the opposite groove, and a reverse movement will reverse the action of the clutches, thereby producing a continuous rotary motion of the shaft in one direction, substantially as described.

2. The combination of a shaft mounted in hearings in asupporting-frame, two disks rigidly secured to the shaft and provided with annular grooves, two curved arms or levers,

each having a key at one end adapted to fit the grooves 011 the disks and hold the arms away from the shaft, and a pin at the opposite ends by which they are moved alternately back and forth, a spring on each for keeping them in position, covering disks having teeth and mounted so as to turn on the shaft, for covering and operating the lever-clutches and their grooved disks by means of the pins connecting with them, andtwo rack-bars connected together and located parallel with and to one side of each other at opposite sides of the shaft, so that one rack will gear with each geared coveringdisk, whereby a reciprocating movement of the double rack will impart a rotary movement to the shaft, substantially as and for the purposes described.

3. The racks 24 25, secured together and in gear with the geared covering'disks, in combi nation with grooved disks rigidly secured back to back to a shaft mounted in asupporting-frame, their curved lever-clutches provided with keys fitting the groovesin the disks, so as to prevent the curved levers from touching the shaft or hub, springs secured to the curved levers on the opposite side of and touching the shaft or hub, for keeping the levers and keys in their proper position, and pins rigidly secured to the curved levers and passing through holes in the geared covering-disks, for the purposes described.

4, In a device for converting motion, a lever-clutch consisting of the curved arm 7, a key, 8, spring ll, and pin 14, in combination with a grooved disk mounted upon and rigidly secured to a shaft set in bearings in a supporting-frame, the key 8 fitting the groove so that the arm 7 cannot touch the shaft or hub of the disk, the spring 11 touching the shaft or hub, and thereby keeping the key in its proper position in the groove, whereby a movement of the pin 14: in a direction tending to draw the spring against the shaft will cause the key 8 to slip easily in the groove 6 without moving the disk, and a movement in the opposite direction will cause the key to bind rigidly in the groove and carry the disk around with it, substantially as described.

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

\VILLIAM H. MGANDBEHVS.

Witnesses:

S. D. L. JACKSON, W. T. GIBsoN.

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