US142365A

US142365A - Improvement in mechanical movements

Info

Publication number: US142365A
Authority: US
Publication date: 1873-09-02
Anticipated expiration: 1890-09-02

Description

2Sheets--Sheet1'.v .l. ARMSTRGNG.

Mechanical Movements.

N0. 142,365. PatentedSeptembr2,1873.

2 Sheets--Sheet 2. l. ARMSTRUNG.

Mechanical Movements.

No. 142,365, Patented Sgpt ember2,1873.

UNITED STA'r s PATENT OFFICE.

JAMES ARMSTRONG,OF TOLEDO, OHIO.

' IMPROVEMENT IN MECHANICAL MOVEMENTS.

Specification forming part of Letters Patent No. 142,365, dated September 2, 1873 application filed August 21, 1873.

To all whom it may concern:

3 is aplan view, Fig. 4 an elevation, and Fig.

5 a top view, of details of the machine; and Fig. 6, a vertical section through the main shaft on the line as w of Fig. 1.

A spur-pinion, A, driven in any suitable manner, is mounted on a shaft, a, supported securely in uprights of a strong frame, B. This pinion drives a corresponding pinion, G, mounted on a sleeve, 0, secured in proper position by a set-screw upon a pipe-box, D, fitted upon a stationary central shaft, E, which is securely mounted in the frame B. By means of the sliding sleeve and set-screw the pinion G can readily be removed. Upon the pipebox D are fixed two pulleys, F F, so as to .turn with the pinion 0 upon the stationary shaft E. Adjoining thepulley F is a stationaryzpinion, G, firmly fixed upon the central shaft. A transmitting-wheel, H, is mounted loosely upon the central shaft E close to the fixed pinion G. This wheel is provided with an internally-geared flange, 9, its teeth corresponding with those of pinion G. A frame, I, is mounted loosely on the central shaft. This frame preferably embraces or incloses the pulley F and pinion G, and carries a pinion, J, in this instance corresponding in size with the fast pinion G. This pinion J meshes with the pinion G and with the wheel H. A pulley, J, is fast on the same shaft j with the pinion J. A bracket, K, secured to the frame I carries a pulley, k.

It'will be seen that as the pinion Arevolves motion is communicated to the pinion G and to the pulleys F F. A belt, fipassing from the pulley F to the pulley J and around the pulley Ir, communicates motion to the pinion J, which is thus revolved twice onits axis for every revolution around the central shaft. As the pulleys F, F, and J, the power from the first of which is communicated through the second to the third, are all of the same size, there is no loss of power, as it is communicated to the surface of each at an equal distance from its center.

In Figs. 2 and 3 I have shown a belt passing from the pulley N on the pipe-box to a loose pulley, 0, corresponding with the pulley 7c, and another belt passing from this pulley to another-pulley, P, corresponding with the pulley J, which is fast on the same shaft with the friction-pulley Q, corresponding with the pinion J. The two revolutions only of thepinion J on its own axis are caused by means of the bodily movement of the pinion and its frame around the central shaft, and by the fixed pinion G, with which it engages.

It is obvious that as the pinion J, in its rev olution, describes a circle three times the diameter of the pulley F, it should revolve three times on its own axis for every revolution around the central shaft. The last revolution is transmitted to the wheel H. The wheel H, it will be seen, makes one revolution to every revolution and a half of the pinion O, which is, in this instance, one-third the size of the wheel H; or, in otherwords, the speed is doubled.

By the use of the pulley 7c the belt f is caused to draw in the direction of the revolution of the wheel H, thus causing the band to work to better advantage than it would in case this pulley was dispensed with.

Instead of the counter-balance L of the frame I, another pulley similar to J, and pinion such as J, may be substituted, and a pulley such as k employed, as shown in Fig. 4.

It is obvious that the pinions, pulleys, and internallygeared wheel may be of different relative sizes than have been here shown.

The machine above described is complete, and all that it is now necessary to do is to carry a belt from the wheel H to the machinery to be driven, unless a still greater speed is desired, in which case the belt from the wheel H is carried to a pulley, M, on the shaft of a second machine operating on the same principle as the one just described, the gearing used in this machine being frictional instead of toothed. I thus get double the speed from the transmitting-wheel of the second machine that is gained from the first, and four times as much as from the pinion O.

I claim- 1. The combination of the loose pulley turning on the fixed central shaft, the loose pulleyframe, also turning on said shaft, the connected pulley and pinion mounted in said frame and revolved by a belt from the pulley on the central shaft, the fast pinion and the loose transmitting-wheel, bothmounted on said shaft, substantially as set forth.

2. The combination of the stationary pinion on the fixed central shaft, the loose transmittin g-wheel on said shaft, and the pinion meshing with both the fixed pinion and transmit- Witnesses:

JOE I. PEYTON, BALTIS DE LONG.