US408049A - smith - Google Patents

Description

(No Model.) 3. Sheets-Sheet 1 H. E. SMITH. REVERSING BELT GEAR. No. 408,049. Patented July 30,1889.

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(No Model.) 3 Sheets-Sheet 2.

.711. SMITH. REVERSING BELT GEAR. No.- 408,049. Patented July so, 1889,

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(No Model.) 3 Sheets-Sheet 3. H. E. SMITH. REVERSING BELT GEAR.

Patented July 30, 1889.

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UNITED STATES PATENT OFFICE.

HAMILTON E. SMITH, OF NEIV YORK, N. Y.

REVERSI'NG BELT-G EAR.

SPECIFICATION forming part of Letters Patent No. 408,049, dated July 30, 1889.

' Application filed September 29, 1887. $erial No. 251,039. (No model.) I

To all whom it may concern.-

Be it known that I, HAMILTON E. SMITH, a citizen of the United States, residing at New York, in the county and State of New York, have invented new and useful Improvements in Reversing l-leltGears. of which the following is a specification.

This invention relates to devices for imparting reverse motions to a shaftby means of belts; and it consists in certain improvements on the device described. in United States Patent No. 355,569, whereby the same can be used to actuate the driving-shafts of any number of machines. The novel mechanism whereby this result is accomplished is fully pointed out in the following specification and claims and illustrated in the accompanying drawings, in which- I Figure 1 represents a perspective view of the reversing belt-gear as applied to use. Fig. 2 is a sectional plan or top view of the same on a larger scale than the preceding figure.

. Fig. 3 is a vertical section in the plane :0 a

Fig. 2. Fig. i is a transverse section in the plane y y, Fig. 2.

Similar letters indicate corresponding parts.

In the example shown in the drawings I have shown my reversing belt-gear as actuating a number of cylindrical washing-machines of a well-known type but it is obvious that it may be applied to actuate a number of any other machines where a reverse rotary movement is required.

In the drawings, the letter A designates a main shaft, and I5 is a counter-shaft, both supported by suitable hangers, as usual. The pulleys c on the driving-shafts of the machines C, Fig. 1, are connected by belts C with the pulleys c on the counter-shaft B, in the usual manner. A reversing rotary motion imparted to the counter-shaft B is transmitted to the driving-shafts of all the machines C.

On the counter-shaft B are arranged side by side three pulleys D, E, and F, all having the same diameter and width of face. The outer pulleys D and F are mounted loosely on the shaft, while the central pulley E is.

rigidly secured thereto. Two belts G and II connect these pulleys with a wide drivingpulley I on the main shaft A, the belt G being an open one and the belt II a crossed one. It

being assumed that the main shaft A rotates continuously in the direction of arrow 1,Fig. 3, the counter-shaft B is rotated in the direction of arrow 2, Fig. 3, when the open belt G is on the fast pulley E, and in the opposite direction when the crossed belt II is on said pulley. On inspection of Fig'. l it will be observed that when one of the belts is on the fast pulley E the other belt-is on a loose pulley.

To shift the belts G and II automatically on and off the fast pulley, I make use of a shifting mechanism, which is actuated from the main shaft A or other source of power, which is independent of the counter-shaft B, the pulleys D E F, and the belts G H. I11 this respect my present reversing belt-gear differs from that described in my patent previously alluded to, as in that patent the shifting mechanism is actuated from one of the pulleys D E F, and hence by the belts G II. This shifting mechanism consists of a cam J made in the shape of a drum, (Fig. 2 especially,) to which a rotary motion in one direction can be imparted from the main shaft A, as will be presently explained.

The cam is loosely mounted on a shaft K, having bearings in pendent brackets K. In said cam are formed two cam-grooves L and M, Fig. 2, which actuate the shifting mechanism for the belts G and II. The beltshifter for the open belt G consists of a slide it, having bearings in a box 70, extending from one of the brackets K and in a hanger .2. From the slide extends downwardly, Fig. 3, an arm n, which carries a roller-stud 11 that projects into the cam-groove M. A second arm 71. extends upwardly and is provided with an eye through which the open belt G passes. The belt-shifter for the crossed belt II is constructed similarly to the shifter for the open belt, it consisting of a slide 0, arranged parallel with the slide n and having common bearings therewith, an upwardly-extending arm 0, carrying a roller-stud 0 that projects into the canrgroove L, and a second arm 0 extending downwardly and provided with an eye through which the crossed belt ll passes. The rollerstuds n and o of the two belt-shifters engage with the cam-grooves L and M from opposite sides of the cam J. The cam-grooves are similar to each other,

but are so arranged that first one belt-shifter is actuated and then the other that is to say, the belt which is on the tight pulley E is shifted upon a loose pulley before the belt on the loose pulley is moved at all, whereby adverse forces do not act on the tight pulley at the same time.

The cam-grooves are so timed that after the shifting of the belt from the tight pulley to a loose pulley a short interval of time elapses before the second belt is moved toward the tight pulley. During this interval the momentum of the tight pulley and counter-shaft is partially or totally expended, and when the second belt is shifted on the tight pulley no shock is caused as a reversal of the rotation takes place. The cam J is rotated slowly in order to allow the counter-shaft to make ten or twelve revolutions before the belts are shifted. Provisions are also made for throwing the cam out of gear and for changing its speed of rotation.

The rotary motion of the main shaft A is transmitted to thecam J by a speed-wheel P, Figs. 1, 2, and 3, that is loosely mounted on the shaft K of the cam, and is connected by a belt 1) with a speed-wheel P, mounted on the main shaft A. A clutch B, Fig. 2, keyed to the shaft K and movable in the direction of the length thereof, normally engages with the hub of. the speed-wheel P, whereby the shaft is caused to revolve. From the shaft a slow rotary motion is imparted to the cam J through a small gear 5, which meshes into a large gear S, mounted rigidly on one end of a spindle t, on the opposite end of which is a small gear 8, which engages a large gear S, attached to the cam. During the time that both belts G and H are respectively on the loose and fast pulley D and F the clutch B may be disengaged from thehub of the speedwheel P, thereby disengaging the cam J, in consequence of which the beltshifters remain idle and the counter-shaftB ceases to revolve.

That I claim as new, and desire to secure by Letters Patent, is-

1. The combination of the main shaft, a speed-Wheel P thereon, the shaft K, having thereon the loosely-mounted speed-Wheel P and cam J, the belt 1), connecting the speedwheel on the main shaft with the speed-Wheel on the shaft K, and the clutch R, movable on the shaft K and adapted to engage with the hub of the speed-wheel P, whereby the shaft K and the cam J thereon are caused to revolve, substantially as described.

2. The combination of the main shaft, the speed-Wheel P thereon, the shaft K, having cam J and loosely-mounted speed-wheel P, the clutch R, movable on shaft K, gear 3, meshing with the gear S on spindle t, gear 3, on the other end of said spindle, gearing with gear S, attached to the cam, whereby a slow motion is transmitted to said cam, substantially as described.

3. The combination of the main shaft A, provided with fast pulley I and speed-wheel P, the counter-shaft 13 having loose pulleys D F and intermediate fast pulley E, the open belt G and crossed belt H, for alternately connecting the fast pulleys E and l, the shaft K, having mounted thereon a cam J, gears S s, loose speed-wheel P, and clutch R, the belt 2), connecting the speed-wheels P P, the spindle 2, having gears S s, and the slides a and 0, engaged with the cam J and with the belts G and II, respectively, substantially as described.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

A. FABER DU FAUR, J12, E. F. KASTENHUBER.

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