Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS127877 A
Publication typeGrant
Publication dateJun 11, 1872
Publication numberUS 127877 A, US 127877A, US-A-127877, US127877 A, US127877A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Improvement in street-car signals
US 127877 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


lmpfovment inStret-Car Signals. No. 127,877. Patented JuneH 1872.




Specification forming part of Letters Patent No. 127,877, dated June 11, 1872.

Specification describing certain Improvements in Street-Oar Signals, invented by JOHN G. HARRIs, of Philadelphia, in the county of Philadelphia, State of Pennsylvania.

The invention consists of a signal to be exhibited above the roof of a street-car, in order to signal a connecting line or branch-car, for the convenience of a passenger in the former who may desire to make a close connection.

In the drawing, Figure l is a transverse section across the roof and dome of the car. Fig. 2 is a view of the apparatus, partly in section, the signal broadside on. Fig. 3, a view similar to Fig. 2, except the signal is edge on. Fig. 4 is an elevation of the lantern, which is a night substitute for the lettered disk.

A is a portion of the car-roof; B, the dome or central raised portion. On the roof of the dome the signal is erected; or a separate signal may be used at each end, over theplatforrn. It consists ofa standard, 0, stepped into a socket-plate, D, and supporting the post E, to which the lettered disk F is attached. G is a circular plate, with catches to hold the colored or lettered lantern H, Fig. 4, for night signaling. Figs. 2 and 3 show two different positions of the signal, the former displaying it toward the front, the latter toward the side. The change is made by pulling downward the handle I, condensing the spring K in-the barrel of the plate D, and drawing the square shoulder L out of its socket, so that the standard 0 and post E may be rotated to face the signal in the direction required; this having been done, the handle is released and the spring again elevates the post and standard, the square of the shoulder L again locking its socket, as before. To enable it to be more readily distinguished the 7 signal letter is repeated on the handle, so that a glance at the handle will show the position of the signal above. After nightfall the post E, carrying the lettered disk, is removed from The turning by the handle is the same for the day or night signals. For example: If a car, say, is coming up Pennsylvania avenue,

Washington, and is opposite the Metropolitan hotel, and contains a passenger who wishesto catch a car running southwardly, on Seventh street, he requests the conductor to signal it. This he does by pulling down the cross-handle, turning it as required, and letting it up again. The driver of the Seventh street car, on the alert at all crossings, sees the signal, stops his car till the passenger comes up, and thus time is greatly saved, and exposuretto bad weather, if it then exist.

There are in some cities different lines of cars running limited distances over the same track; lest the wrong one should stop, the variable signal is introduced of T for through cars and B for branch lines on the signal above, to be read at a distance, as well as below on the handle, that theconductor, too, may see what signal he is making. When no signal is being made the edge of the signal is toward the front of the car. The conductor setting it again, if used, at each crossing; the spiral spring raising the signal, after the conductor pulls it down and turns it as desired. The square shoulder keeps it from jolting out of position.

When the colors of the lantern are to the side of the car no light shows to the front, and thus will serve the same as the edge of the disk. Inside of the globe a chimney-lamp can be placed, with projections underneath to fit in the square socket. If desired, a cord running beneath the car-roof from. the axis of the signal-(on which, when either letter is front, it has a quarter turn,) first over a small wheel with axis running like the car-wheel axis, then over a wheel with a vertical axis, both on a frame screwed to the roof, then to the front platform, passing therethrou gh a pulleycould have, its end near the driver, so that as he crossed each street he could reset it, edgeto the front. The cordwould operate, first, to lower the signal so that it could be turned then, by the quarter-turn wrap, to turn the signal. Letting go, by means of the spiral spring, would send it up, edge to the front, as desired. This would relieve the conductor, who, at crossings, is generally busy otherwise.

Or screw a slightly-conical plate with vertical hole through its center upon the carroof.

A. signal shaft, No. 1, with inverted conical shoulder bearing the same signal, is inserted from above, and extends two inches below the roof, with slot'cut in lower end of shaft, lying in same direction as the signal disk. A tongue of a shaft, No. 2, some ten inches long, fits in this slot, and is hinged thereto by a pin. This shaft terminates at its other end in a ring, through which the drivers cord is fastened. An iron rod, (an inverted horseshoe in shape,) running two hundred degrees of a circle, lying not over four inches below and parallel with the roof, is firmly screwed by the heel of the shoe to the roof, the toe of the shoe being forward. No. 2 shaft, resting on it above, can then describe an arc of one hundred and eighty degrees when it is lying to. the extreme right, the T shows to the front, the B shows at the extreme left, and the edge when lying to the front. The horseshoe rod has three slots, ninety degrees apart, open from above, in either of which No. 2 shaft will lie, as placed, until the drivers cord pulls and resets the signal, edge to the front.

Or, by means of a cord passed through the vertical axis of the signal, knotted above, and coming out beneath the roof, running forward in the car, and under a wheel of sufficient diameter to carry the cord low enough to enable the signal to turn when the, cord is pulled by the conductor or driver, on whose platform the cord terminates. Then, the signal being edge to the front, a cord run underneath and lengthwise, knotted at one end, passing horizontally through the vertical axis of the signal, drawn tight, and attached at its other end to a spring fastened under the roof, will, on a signal being made, take a quarter-turn on the signals vertical axis. On the drawing of the longer cord the spring and shorter cord will reset the signal, edge on.


I claim as my invention 1. The standard or holder 0, journaled in the roof of the car, and adapted to support a signal-disk, F, or lantern H, above the roof, and furnish ed with the handle I, with indicator below the roof, constructed and arranged as described, by which to present different sides, or an edge, or blank of the disk or lantern, as required.

2. The combination of the standard (3 with socket and disk to support a signal disk or Iantern, and with square L and handle I, the socket-plate D and' the spring K, constructed and operating substantially as shown and described, for the purpose specified.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4747302 *Feb 17, 1986May 31, 1988American Railroad Technology, Inc.Mounting fixture for end-of-train device or the like
Cooperative ClassificationB61L15/0045