US438077A

US438077A - Clutch

Info

Publication number: US438077A
Authority: US
Publication date: 1890-10-07
Anticipated expiration: 1907-10-07

Description

1). MACKIE. CLUTCH.

No. 438,077. Patented Oct. '7, 1890.

L 0 III AIME-I11! K II WITNESSES IN VE/VZ'OI? t WW A 77'OHNE Y8 ms News runs ca, wow-mum, WASHINGTON, n, c.

- the driving clutch-disk.

NITED STATES DAVID MACKIE, OF PHILADELPHIA, PENNSYLVANIA.

CLUTCH.

SPECIFICATION forming part of Letters Patent No. 438,077, dated October '7, 1890.

Application filed January 31, 1890.

To all whom it may concern:

Be it known that I, DAVID MAcKIE, of Philadelphia, in the county of Philadelphia and State of Pensylvania, have invented a new and Improved Clutch, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved clutch for coupling which is simple and durable in construction, very effective in operation, and combining a friction and a positive lock in such a mannerthat the friction-lock is first employed and the positive lock is brought into action when the speed of the driven shaft is equal or nearly equal to the speed of the driving-shaft, after which the frictional contact is broken itnd the positive lock makes a direct coup- The invention consists of certain parts and details and combinations of the same, as will be hereinafter more fully described, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional side elevation of the improvement. Fig.2 is a sectional plan view of the same. Fig. 3 is a face view of the driven clutch-disk. Fig. 4 is a like view of Fig. 5 is a face View Fig. 6 is a side elevation of the same. Fig. 7 is a face viewof the sliding collar. Fig. Sis a plan view of one of the sliding bars. Fig. 9 is an edge view of one of the levers. Fig. 10 is a plan view of one of the links, and Fig. 11 is a face view of one of the plates for the sliding bars.

The driving-shaft A to be coupled to or uncoupled from the driven shaft B is provided with a driving-clutch O, secured on the said shaft A and provided on its front with toes or teeth 0', adapted to engage corresponding toes or teeth D, formed on one face of the driven disk D, held to slide on the keys E, fastened on the driven shaft B, so that the said clutch-disk D is free to slide on the shaft B and turns the same when engaged by the driving clutch-disk O.

The hub of the clutch-diskD is adapted to abut on a collar F, secured on the driven of the friction-ring.

Serial No. 338,789. (No model.)

is forced into frictional contact with the disk by means of a collar I-I, held to slide on the driving-shaft A, and shifted forward or backward by the usual shifting fork or lever I, pivoted on a fixed pivot I. The said collar H is also adapted to move the driven clutchdisk D into contact by its toes D with the toes O of the driving clutch-disk O. In order to make these connections, the collar H is provided with two lugs H, arranged opposite each other and pivotally connected by links K with levers L, fulcrumed on the driving clutch-disk C, and projecting at their inner ends into the recesses C to engage the backs of the lugs G of the friction-ring G, so that when the shifting-lever I is moved in the direction of the arrow a the collar H slides to the right and the levers L press against the lugs G so as to force the friction-ring G to the left in frictional contact with the clutchdisk D. When the lever I is moved back to its former position, the inner ends of the le vers L engage projections G formed on the said lugs G so as to withdraw the friction ring G from frictional contact with the clutchdisk D.

The connection of the collar H with the disk D is as follows: Two lugs H are arranged diametrically opposite each other and at right angles to the lugs H, as is plainly shown in Fig. 7. The lugs H are pivotally connected by the links N with levers 0, also fulcrumed on the driving clutch-disk G and engaging with their outer ends openings P, formed in sliding bars P, held to slide longitudinallyin bearings 0 formed on the rim of the drivingclutch disk C. Each of the bars 0 supports a plate Q, adapted to engage the outer face of the disk D, so that when the leverI is moved in the direction of the arrow 1) the collar H slides to the left and the levers O are swung so as to move the bars P to the right,thereby causing the plates Q to draw the disk D to the right, so as to engage the toes D with the toes O of the driving clutch-disk O.

The operation is as follows: "Whenthe clutch is not in use, it is in the position shown in Figs. 1 and 2that is, the lever I stands vertically and the clutch-disks O and D are disengaged, and friction-ring G is disengaged from the clutch-disk D. Now, when the operator desires to couple the driving-shaft A with the shaft B to be driven, he first moves the shifting-lever I in the direction of the arrow a, so as to engage the friction-ring G with the clutch-disk D, as above described, whereby motion is transmitted from the driving-shaft A by the said friction-ring G to the clutch-disk D to turn the shaft :8. As the frictional contact between the shaft G and the clutch-disk D is gradual, the motion of the shaft B is gradual until it attains about the same speed as the driving-shaft A. As soon as this takes place, the operator moves the shifting-lever I back to the former position, (shown in Figs. 1 and 2,) at the same time moving the said lever still farther to the right in the direction of the arrow 1), to slide the disk D to the right into contact by means of its toes D with the toes O of the drivingclutch disk (3. The shaft A is now positively coupled to the shaft B. It is understood that this return movement of the shifting-lever I and the further movement of the same in the direction of the arrow 1) takes place as quickly as possible, so that the disconnecting of the friction-ring G from the disk D and the movement of the latter to couple with the disk 0 takes place in a very short time, and before the shaft B has lost much motion on the dis connecting of the friction-ring G. V

In order to nn'cou lo the shafts A and B, the lever I is moved in the inverse direction of the arrow 12, so that the sliding collar H moves to the right, and the bars P are slid to the left to free the plates Q from the face of the driving-disk D. The operator then continues the movement of the lever I in the direction of the arrow a to move the frictionring G in contact with the disk D, so that the latter is shifted to the left, whereby the toes D are disconnected from the toes O, and the hub of the said disk rests or abuts against the fixed-collar F. The operator then moves the lever I in the inverse direction of the arrow ct until it stands in the position shown in Figs. 1 and 2, so that the friction-ring G is moved out of contact with the disk D.

It will thus be seen that by operating a single shifting-lever first a frictional coupling is made, so as to impart a gradual increasing speed to the shaft to be driven until it attains nearly the speed of the driving-shaft. Then the frictional contact is broken, and at the same time the two shafts, which run at nearly the same speed, are coupled together without shock or jar by a toe-coupling, so that the coupling is positive, and all the strain on the shifting-lever is removed.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. A clutch comprising a driving clutch-disk having toes and secured on a driving-shaft, a friction-ring held to slide in the said clutchdisk, a driven clutch-disk having toes, and a friction-surface adapted to be engaged by the said friction-ring and adapted to move in contact by its toes with the toes of the drivingclutch' disk, a sliding collar connected with the said friction-ring and with the said driven clutch -disk, and intermediate mechanism, substantially as described, for connecting said collar with the said ring and with the said driven clutch-disk, as set forth.

2. In a clutch,the combination, with a driving clutch-disk adapted to be secured to the driving-shaft and provided with recesses, of a friction-ring having a conical rim and lugs fitting into'the said recesses of the said disk, so as to slide in the latter and turn with the same, a driven clutch-disk having an annular beveled recess adapted to be engaged by the conical rim of the said ring, and levers pivoted on the said driving clutch-disk and engaging the lugs on said friction-ring to move the latter into and out of contact with the driving clutch-disk, substantially as shown and described.

3. In a clutch, the c'ombinatiomwitha driw ing clutch-disk adapted to be secured to the driving-shaft and provided with recesses, of a friction-ring having a conical rim and lugs fitting into the said recesses of the said disk, so as to slide in the latter and turn with the same, a driven clutch-disk having an annular beveled recess adapted to be engaged by the conical rim of the said ring, levers pivoted on the said driving clutch-disk and engaging the lugs on said friction-ring to move the latter into and out of contact with the driving clutchdisk, and a sliding collar held on the drivingshaft and connected by links with the said levers, substantially as shown and described.

4:. In a clutch, the combiaiion, with a driving clutch-disk adapted to be secured to the driving-shaft and having clutch-toes, of bars held to slide longitudinally on the rim of the said driving c'lut'clrdisk and each carrying a plate, and a driven clutch-disk having toes and adapted to slide on the shaft to be driven and also adapted to be engaged by the said plates, substantially as shown and described.

5. In a clutch, the combination, witha driving clutch-disk adapted to be secured to the driving-shaft and having clutch-toes, of bars held to slide longitudinally on the rim of the said driving clutch-disk and each carrying a plate, a driven clutclrdisk having toes and adapted to slide on the shaft to be driven, and also adapted to be engaged by the said 10 adapted to slide on the shaft to be driven, and

also adapted to be engaged by the said plates, levers pivoted on the said driving clutch-disk for operating the said bars, and a sliding collar connected by links With the said levers to operate the said bars, substantially as shown 15 and described.

v DAVID MAOKIE. Witnesses:

R. S. REED, R. HAWKINS.