US863905A - Gearing for imparting rotary movement at high speed. - Google Patents

Description

. PATENTED AUG. 20, 1907. T. COLLINS & B. L. HARTMANN.

APPLIOATION FILED AUG. 9. 190a.

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Md MC) r 7 GBARING FOR IMPARTING ROTARY MOVEMENT AT HIGH SPEED.

UNITED STATES PATENT oEEieE.

THOMAS COLLINS AND ERNEST L. HARTMANN, OF BAINBRIDGE, NEW YORK ASSIGNORS TO AMERICAN SEPARATOR 00., OF BAINBRIDGE, NEW YORK, A CORPORATION OF NEW YORK.

GEARING FOR IMPARTING ROTARY MOVEMENT AT HIGH SPEED.

Specification of Letters Patent.

Patented Aug. 20, 1907.

Application filed August 9,1906. Serial No. 329,815.

To all whom it may concern:

Be it known that we, THOMAS OoLLINs and ERNEs'r L. HARTMANN, citizens of the United States, residing at Bainbridge, in the county of Ghenango and State of New York, have invented an Improvement in Gearing for lmparting Rotary Movement at High Speed, of which the following is a specification.

Our invention relates to a manually operated gear device for imparting to an object rotary movement at high speed and our invention is especially applicable to centrifugal cream separating devices with the object of reducing or deadening vibration or jar in the mechanism and also lessening the noise or chatter incident to driving mechanism of this general class.

The special features of our invention relate to a bevel pinion and spur gear mounted upon a fixed pin of the frame; the spur gear meshing with a second spur gear having a different number of teeth, and said bevel pinion and spur gears located between the manually actuated shaft and the main shaft of the mechanism.

We employ mounted in a suitable frame a shaft manually actuated by a crank and handle, and upon which is mounted a bevel gear of liberal dimensions. The

bevel gear is in mesh with the aforesaid bevel pinion.

The bevel pinion and one spur gear are preferably made in one piece and are collectively mounted upon a stud securely fixed in the frame of the machine.

The main shaft is mounted in hearings in said frame and at its upper end carries the spur gear in mesh with the aforesaid spur gear, said gears however, by preference, having different numbers of teeth. Upon the lower end of this main shaft is a large gear in mesh with a pinion upon the shaft of the object to be rotated. To this shaft of the object to be rotated a very high speed is imparted and a portion of our invention relates to the peculiar construction of this shaft whereby a certain amount of flexibility is obtained and whereby the same is easily removed because of being made of separable parts, all of which is hereinafter more particularly described.

1n the drawing, Figure 1 is a vertical section and partial elevation representing the devices of our improvement, Fig. 2 is a vertical section and partial elevation of the gearing devices at the upper end and adjacent to the manually operated shaft, and Fig. 3 is a vertical section and partial elevation of the features of our improvement at the opposite end of the machine and at the lower end of the shaft of the object to be rotated. Figs. 2 and 3 are of exaggerated size over Fig. 1 for clearness.

The frame of the machine carrying the parts of the gear structure and supporting the device to be rotated generally comprises the base a in the lower portion of which is a bridge member a, a hollow standard a-, a hollow bracket structure a at one side and a head portion and rising arms a from the upper end of the standard a 12 represents the centrifugal cream separator bowl, and 11 its vertically placed shaft, b representing a suitable bearing in the bracket structure for the shaft b and directly beneath the bowl I).

c is the manually operated shaft in suitable bearings at the upper ends of the arms a. To one end of this shaft is secured the crank d and crank handle (1 and upon this shaft between the bearings of the arms a is secured a bevel gear e of large dimensions.

The bevel pinion f and the spur gear f are preferably formed of one piece of metal, and while we do not limit ourselves in making these of one piece, theyshould however if made of two pieces, be permanently connected together. They are provided with a common central aperture adapted to receive the stud g, which stud is securely fastened to the head of the frame by being screwed into an internally threaded hole, see Fig. 2; the bevel pinion f and the bevel wheel a being in mesh.

The main vertical shaft h is provided with a suitable bearing h in the head portion of the frame and is preferably provided at its lower end with a ball-bearing Z in the bridge member a The spur gear i is secured to the upper end of this shaft h and a large gear is is socured near the lower end of this shaft.

To obtain the best results we prefer'to make the spur gear f with thirty-five teeth and the spur gear 1' with twenty-four teeth, while the gear is may have as many as two hundred and sixteen teeth. The gear 7; meshes with a pinion k of small dimensions secured to the auxiliary shaft m. We prefer to form this auxiliary shaft m with a pin 2 transversely through its upper end and to recess and transversely notch the lower end of the shaft 6 to receive the upper end of the shaft m and its pin 2, so that the shaft 1) is set over the shaft m and its pin.

We prefer to employ a bearing block 3 at one end of the bridge member a adapted to receive the lower end of the shaft 'm and a pin n which is recessed at its upper end to receive a ball 0 which forms an anti-friction bearing for the hardened pin m of the shaft m to rest upon. This bearing pin 71 is vertically movable for adjustment and may be secured in position by the lock-nut which surrounds the same. This forms an anti-friction bearing having a minimum of resistance for the turning moment of the shaft.

The axial alinement of the shafts b and m are readily maintained by the centrifugal movement and the apparent looseness or freedom of these shafts facilitates the centrifugal movement and removes liability of friction and binding at high speed.

As the result of the device of our invention, the gearing multiplies very rapidly and at the same time the construction admits of a wide range of multiplying gearing according to the relative sizes employed, and at a greatly reduced consumption of power in comparison with the devices in general use.

We claim as our invention:

1. The combination with a suitable frame, of a mauually rotated shaft and a shaft at right angles thereto, with bearings in the frame for said shafts, a bevel gear on the manually actuated shaft of liberal dimensions, a spur gear on the adjacent end of the vertical shaft, a pin fixed in said frame, a bevel pinion and spur gear mounted on said pin and interposed between the said bevel gear and spur gear of said shafts and meshing respectively therewith, a device to be rotated at high speed, a shaft therefor,

I and multiplying gear between said shaft and the aforesaid vertical shaft.

2. The combination with a suitable frame, of a manually rotated shaft and ashaft at right angles thereto, with hearings in the frame for said shafts, a bevel gear on the manually actuated shaft of liberal dimensions, a spur gear on the adjacent-end of the vertical shaft, a pin fixed in said frame, a bevel pinion and spur gear mounted on said pin and interposed between the said bevel gear and spur gear of said shafts and meshing respectively therewith, a large gear on the vertical shaft at the end opposite to the end having the spur gear, a device to which a high speed is to be imparted and a shaft therefor, an auxiliary shaft and a pinion thereon meshing with the latter gear and means for connecting the auxiliary shaft to the shaft of the device to be rotated.

Signed by us this 28th day of July 1906.

THOMAS COLLINS. ERNEST L. HARTMANN.

Witnesses E. C. BURDICK, CLARENCE W. COWAN.

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