US 423872 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
W. L. JUDSON.
STREET RAILWAY. No. 423.872. Patented ar. 18, 1890.
N ETERS. mic-Utbognwhar, Washington. u. c.
UNITED STATES J lV HITCOMB L. JUDSQN, OF MINNEAPOLIS, MINNESOTA.
SPECIFICATION forming part of Letters Patent No. 423,872, dated March 18, 1890.
Application filed August '7, 1889. Serial No. 319,986. (No model.)
To ctZZ whom, it may concern.-
of the city of Minneapolis, county of Hennepin, State of Minnesota, have invented certain new and useful Improvements in Street- Railways, of which the following is a specification, reference being had to the accompanying drawings.
Myinvention relates to that system of propelling street-cars and other carriages of my invention set forth in those several United States Letters Patent issued of date May '7, 1889, numbered, respectively, 402,674, 402,933, and 402,934. In that system, as will appear on reference to the above-identified patents, a driving drum or shaft extends along the line of travel and is revolved by a series of stationary motors arranged at suitable intervals. Therotary motion of the drum is converted into a rectilinear motion on the car by sets of angularly-adjustable friction-wheels connected with the car and engageable with the drum on pitch-lines Variable and reversible at will.
My invention herein set forth has for its object to adapt this system to turn-outs and branch lines by suitable switch mechanism, whereby a car may be run from themain line to the branch or turn-out, and conversely, at will and my preferred construction is such that the switch is operated automatically from the car. To this end the main-line drum is divided at the switch-point and the adjacent divisions terminate in separate uncoupled bearings at the switch-point, the respective divisions being driven by separate motors. The side line or turn-out is also uncoupled from the main line and is either driven by a separate motor or indirectly by intermediate gearing from a main-line motor. The drum is composed of separate straight sections coupled together in such a manner as to permit angular adjustment with reference to each other. The terminal drum section or sections of one division of the main line are mounted in movable bearings and swing from their coupling with the last fixed section as a pivot. The pivoted section or sections may therefore be swung at its free end and made to register either with the next I division of the main line or the side line at Be it known that I, WHnrooMB L. J UDSON, a citizen of the United States, and a resident will. This of course could be done byacolnmon draw-bar and han d-lever, as in ordinary raiLsWiLches; but to render the switch automatic I arrange a crank-shaft parallel and adjacent to the main-line drum of a length to extend a short distance each way beyond the switch-point. Connecting-rods unite the cranks of this shaft with the free ends of the pivoted drum-sections. The crank-shaft is provided at its extremities with enlarged or drum-like portions having on their. peripheries spiral cams. One of the friction-wheel trucks or some other dependent portion of 6 the car is provided with a movable projection or cam-lever under the control of the operafor on the car, which may be rendered rigid with the car in a position to engage with the spiral cams to operate the switch. The piv- 7o oted section of the drum is normallyin registration with the most used line. If the car is to continue on the main line and the switch be in its normal position, the cam-lever, being in its normal position, will pass clear of the cams; but if the switch 'be out of its normal position the cam-1ever will engage with the cam and close the switch-section ahead of the car. If it is desired to take the side track and the switch be in its normal position, the cam-lever is set in its switching position, and
it will then engage with the cam and swing the switch to the side track.
I have illustrated my invention in the accompanying drawings. Therein, like letters referring to like parts throughout, Figure 1 is a plan view of my invention with the car removed. Fig. 2 is a vertical cross-section with a car in position; and Fig. 3 is a detail,
partially in side elevation and partially in section, showing the movable bearings for the pivoted section of the drum.
A B are the divisions of the main-line drum.
0 is the drums for turn-out or branch line.
Z9 Z) are the end sections of division B, 5 mounted at their free ends in movable bearings D. These two sections are coupled together, and the second section b is coupled to the last fixed sections by any suitable coupling permitting angular adjustment at the coupling-space, and are therefore driven from division B of the main-line drum.
E are the supporting conduit-yokes.
F are guides fixed to the conduit for the movable drum-bearings D.
G is the switch crank-shaft, having the enlarged ends 9 g. G and G are the spiral cams thereon.
II are the connections from the cranks of the crank-shaft to the movable bearings D.
K is the car-body; L, the friction-wheel truck; M, the standard and bolster connecting the car-body and the truck.
N are the friction-wheels.
P is the pivoted cam-lever on the truck L, provided with rollers or knobs p p on its opposite extremities for engagement with the cam on the switch crank-shaft. This camlever, as shown, is composed of a pair of arms set at an angle to each other and fulcrumed at their point of union to the truck.
Q is a connection extending to within reach of the operator of the car for shifting the position of its extremities at will. The proj ections or arms 17 19 extend on opposite sides of the truck, so as to makeit immaterial which end of the car goes foremost.
The operation is evident from the description already given.
hat I claim, and desire to secure by Letters Patent, is as follows:
1. The combinatiomwith a movable car,of main-line and branch-line drivin g-drums having a movable section at their convergence adapted to register with either at will and friction-wheels connected with the car engagcable with said drum at an angle thereto.
The con1bination,with a movable car, of main-line and branch-line driving-drums having a pivoted or switch section at their point of convergence, friction-wheels on the car engageable at an angle with said drum, and mechanism operated by the car to open and close said switch-section.
The combinatiomwith a movable car, of main and branch line driving-drums having a pivoted or switch section at their convergence, friction-wheels connected with the car engageable with said drum at an angle thereto, a crank-shaft adjacent to said drum, with connections to said switch-section, and provided with spiral cams, and a cam-lever on the car adapted to engage with said cams to operate the switch, substantially as described.
4. The combination, with a movable car, of main-line and branch-line d riving-drums having a movable or switch section at their convergence, friction wheel trucks connected with the car and having friction-wheels engageable with the drums at an angle thereto, a crank-shaft adjacent to the main-line drum, connections from the same to the movable section, spiral cams on the opposite ends of said crank-shaft, a cam-lever fulcrumed to said truck with projecting arms, and a connection to the car-body.
EMMA F. ELMORE, JAS. F. WILLIAMsON.