US623133A - George k - Google Patents

Description

Patented Apr. 18, I899.- G. K. CHENEY.

MECHANICAL MOVEMENT.

(Application filed Aug. 16, 1898.) (No Model.)

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'NITED STATES GEORGE K. CHENEY,

OF NEW YORK, N. Y.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 623,133, dated April 18, 1899. Application filed August 16, 1898. Serial No. 688,676. (No model.)

To all whmn if ntay concern:

Be it known that I, GEORGE K. CHENEY, a citizen of the United States of America, and a resident of New York city, New York county, New York State, have invented certain new and useful Improvements in Mechanical Movements, of which the followingis a specification.

My invention relates to mechanical movements or mechanism for producing motion or controlling of same, and is more specifically designed to produce a simple, noiselessly-running and easily controlled and adjusted train of mechanism for rotating a horizontal table such as that on which rest the disk-shaped sound-records produced on and employed with what is known as the ,graniophone. The elements of such train of mechanismconsist generally of power-driven gearingusually set in motion by a spring and a governor for controlling the rate of rotation and the rotatin g vertical shaft on which the table is mounted, which is most conveniently, if not necessarily, placed between the driving-gear and the governor. In such a train of gearing as ordinarily constructed, in which the bearings of the various shafts and gear-wheels are all rigidly fixed in their relation one to another, it is practically impossible to turn out a large number of sets of apparatus which wlien'put together will run smoothly and with that absence of noise which is absolutely necessary in a talking-machine. I have overcome this difficulty and at the same time produced a cheap and simple apparatus by mounting the driven shaft, to which the rotating table'is attached, in a frame which is adjustable on and removable from the bed plate of the mechanism so that the gear-wheel and pinion carried thereby may in each particular case be adjusted to exactly the right position with reference to the driving-gear and the governor-pinion by the operator who is assembling the machines.

The preferred form of apparatus in which myinvention is embodied is illustrated in the accompanying sheet of drawings, in which- Figure 1 is a plan View of the apparatus. Fig. 2 is a side elevation with a part of the bed-plate broken away. Fig. 3 is a detail,

partly in elevation and partly in SQClJlOlhShOW ing the governor.

Throughout the figures of the drawings like reference-figures refer to like parts.

1 represents the bed-plate, on which rests the separate adjustable frame 2. The adj ustment of said frame 2 with reference to the bed-plate is best secured by means of the slots 3 and 4 in the base of the adjustable frame and the set- screws 5 and 6 or their equivalent passing through said slots and screwing into the bed-plate 1. In order to render possible an endwise adjustment of said frame, aswell as sidewise adjustment, I preferably form the inner portion of said slots 3 and 4 in the shape of two cross-slots 5 and I. In this adjustable frame 2 is housed the vertical shaft 7, on

tating horizontal table 8.

9 is an internally threaded disk which screws down on the end of the shaft 7 to hold the ordinary gramophone record or other plate placed on the table in position. On the vertical shaft 7 are fastened the toothed gearwheel 10, held in place by the set-screw 11, and the pinion 12, held in place by the setscrew 13 or equivalent means. The shaft is driven by means of the pinion 12, which meshes with the driving-gear 14. This driving-gear may be operated by any suitable train of gearing driven by power. I have illustrated the train of gear wheels 15 16 16 the latter being driven by the ordinary clockspring 16". The rate of rotation is controlled by means of the governor, (shown in detail in Fig. 3,) which consists of the vertical shaft 18, stepped in the bed-plate, on which shaft is a small pinion 17, meshing. with the gearwheel 10 on the driven shaft. The governorweights 19 are hung from a collar on the upper end of the shaft 18 and rotated with said shaft, being connected by links of the sliding collar 20. One arm 21 of the bell-crank lever (shown in Fig. 3) has a pad 22, which rubs against the collar 20. This bell-crank is pivoted at 23 in the standard 26. An adjustingscrew 25 bears against the arm 24 of the bellcrank, and thus regulates the pressure of the pad 22 on the collar 20.

The operation of my invention is as follows:

which is keyed or otherwise secured the ro- When the parts are in position, the gear 16 is slowly driven by the unwinding of the spring 16*, and such motion is multiplied through the gearing 16, 15, and 14. The driving-gear 14 gives a still higher rate of rotation to the vertical shaft 7 and the table 8, carried thereby, by meshing with the pinion 12 of lesser diameter. The gear rotates with the shaft and gives a very high speed of rotation to the governor-shaft 18. The centrifugal force forces the weights 19 away from the governor-shaft and lifts the collar to a bearing against the pad 22. The more rapidly the machinery rotates the greater this pressure against the pad, so that a limit of speed is soon reached, .and this limit can be raised or lowered by adjusting the screw 25.

In assembling the parts of the machine the position of the adjustable frame 2 can be varied by means of the slot and set-screw connections to the bed-plate within quite wide limits until just exactly the right degree of intermeshing between driving-gear lat'and pinion 12 and between gear 10 and governorpinion 17 is obtained to produce noiseless and easy running. Moreover, by loosening the set- screws 5 and 6 and revolving the frame 2 on the shaft as a center in the direction of the hands of a watch said frame can be entirely disengaged from the set-screws and removed and a duplicate piece of apparatus inserted if the first is found defective or incapable of proper adjustment. The advantage of the invention, as above indicated, consists of its great flexibility of adjustment of parts. The parts 16 16, 16, 15, and 14 or their equivalents are called the driving-gearing. The

. parts 2 10 ll 12 13 or their equivalents are called the driven gear. The parts 17 18 19 2O 21 22 23 24 25 26 or their equivalents are called the governor.

Of course various changes could be made in the type of gearing, in the form of governor, 856., without departing from the spirit and scope of my invention, so long as the relative arrangement of parts shown in the drawings and the mode of operation set outin the specification are retained.

The shaft 7 may be journaled in the frame 2 in any suitable manner; but Iprefer to have a step-bearing of tapering or other shape at its lower end, (not shown.) while the upper end is grooved, as at 29, so that the bearing- - plates 27 and 28 may fit into the'groove and keep the shaft from lifting out of its lower Having therefore described my invention, I

what I claim as new, and desire to protect by Letters Patent, is

1. In a mechanical movement the com bination of the driving-gear, the governor, the,

driven shaft and gearing thereon intermediate of the driving-gearing and the governor and geared to each, and the bearings for said driven shaft adj ustalole to and from the governor and driving-gearing, substantially as described.

2. In a mechanical movement the combination of the bed-plate, the driving-shaft journaled in said bed-plate, the governor mounted on said bed-plate, the driven shaft intermediate of the driving-shaft and the gov ernor, and geared to each, and the housings for said driven shaft formed in a separate frame, which frame is adj ustably mounted on the bed-plate, substantially as described.

3. In a mechanical movement the combination of the bed-plate, the driving-shaft journaled in said bed-plate, the governor mounted on said bed-plate, the driven shaft intermediate of the driving-shaft and the governor, and geared to each, and the housings for said driven shaft, formed in a separate frame, and the slot and set-screw connections between the bed-plate and said frame, substantially as described.

4. The combination of the rotating table, the vertical shaft on which it is mounted, the gear-Wheel and pinion on said shaft, the adj ustable frame in which said shaft is housed, the bed-plate, the driving-shaft journaled in the bed-plate,andhaving a gear which meshes with the pinion on the first-mentioned vertical shaft, and the governor mounted on the bed-plate and having a pinion which meshes with the gear on said vertical shaft, substantially as described.

5. The combination of the driving-gearing, the governor, and the driven gear intermediate of the two and adjustable with reference toeach, substantially as described.

Signed by me, at New York city, this 8th day of August, 1898.

GEORGE K. CHENEY.

Witnesses:

W. H. PUMPHREY, L. H. FOSTER.

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