US304017A

US304017A - miller

Info

Publication number: US304017A
Authority: US
Publication date: 1884-08-26
Anticipated expiration: 1901-08-26

Description

(No Model.) 2 Sheets-Sheet 1.

D. J. MILLER. DRIVING MACHINERY FOR TRACTION ROPE RAILWAY$. No. 804,017.. v Patented'Aug. 26-, 188 4.

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(No Model.) 2 Shets-Sheet 2. D. J. MILLER. DRIVING MACHINERY FOR TRACTION ROPE RAILWAYS. No. 304,017. Patented Aug. 26, 1884.

UNTTED Sra'rns PATENT rrrca.

DANIEL J. MILLER, OF NEW YORK, N. Y.

DRIVING MACHINERY FOR TRACTION-ROPE RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 304,017, dated August 26, 1884.

Application filed January .15, 1884. (No model.)

To all whom it may concern- Be it known that I, DANIEL J. MILLER, of the city, county, and State of New York, have made certain new and useful Improvements in Driving Machinery for Traction-Rope Railways, of which the following is a specification.

The invention consists of two driving-sheaves mounted on shafts, each shaft having a driving-gear, said sheaves having several grooves for the tractionrope to run in. The sheaves are tilted in opposite directions, so that the cable is carried from one groove to the next as it passes from one sheave to the other.

The invention consists more particularly in an intermediate gear on a horizontal shaft, the gear having diagonally-arranged or spirallypitched teeth, to meet the straight teeth of the tilted gears on the sheave-shafts.

The object of this invention is to make both sheaves drivers, and pass the cable direct from one groove to another, and thus have as few bends in the rope as possible, for it but one sheave was a driver and the other an idler, it would be necessary to make twice the number of bends in the rope to produce the same result.

The accompanying drawings form partof this specification.

Figure 1 is a plan of the machinery. S S represent the two sheaves. g 9 represent the gears on the driving-sheave shafts, h the in termediate gear, and if the driving'gear.

Fig. 2 is a side elevation of the sheaves S S, and shows the direction of the cables as they pass from one sheave to the next.

Fig. 3 is aview of the driving-sheaves, shafts, and gears, theheavy lines representing the first sheave, S, and the dotted lines representing the second sheave, S

Fig. 4 is an elevation of the intermediate gear, 71., representing the pitch of the teeth.

In Fig. 2, (a side elevation of sheaves,) a represents the cable coriiin g to the sheave. The

cable passes into the first (1st) groove (see Fig. 3) in sheave S, is carried half-way around this sheave,and returns to the first groove in sheave S, makes half a wrap on sheave S, and returns to second groove in sheave S Thus, by continuous wraps on the sheaves, the cable is carried from one groove to the next as it passes from one sheave to another. By having the sheaves tilted in this manner the cables are held on a direct line when passing into the grooves.

It will be seen in Fig. 3 that the sheaves are moved so that the grooves are ona direct line on the bottom, and lap just one groove at the top. The teeth of the gears on the sheaveshafts are ,kept straight, but the intermediate gear has teeth diagonally arranged, or with a spiral pitch equal to the angle of the sheaveshafts. These shafts being pitched in opposite directions makes the straight teeth of the tilted gears g and 9 correspond exactly with the spiral or diagonal teeth of the intermediate gear.

In the plan (Fig. 1) it will be seen that the intermediate gear can be used as a driver, and

the gear 75* can be abandoned should it be deemed preferable to do so.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The intermediate gear having spirallypitched or diagonally-arranged teeth to operate in combination with the straight teeth of the tilted gears on the driving-sheave shafts, for the purpose specified.

2. The tilted driving-sheaves, with several grooves for the traction rope, when both sheaves are made drivers and connected by gears, as herein set forth.

' D. J. MILLER. Witnesses:

0. LUNDQUIST, B. M. STROHN.