Thomson-Houston Electric Co. v. Illinois Telephone Const. Co.

143 F. 534, 1906 U.S. App. LEXIS 4647
CourtU.S. Circuit Court for the Northern District of Illnois
DecidedFebruary 26, 1906
DocketNo. 28,041
StatusPublished
Cited by4 cases

This text of 143 F. 534 (Thomson-Houston Electric Co. v. Illinois Telephone Const. Co.) is published on Counsel Stack Legal Research, covering U.S. Circuit Court for the Northern District of Illnois primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Thomson-Houston Electric Co. v. Illinois Telephone Const. Co., 143 F. 534, 1906 U.S. App. LEXIS 4647 (circtndil 1906).

Opinion

KOHLSAAT, Circuit Judge.

This cause is based upon infringement of patent No. 424,695, issued to Charles J. Van Depoele April 1, 1890, for an improvement in suspended switch and traveling contact for electric railways, and is now before the court upon a motion for a preliminary injunction. The claims involved in the proceeding are those numbered 3, 4, 11, 19, 20, 23, 25, 26, and 27, which read as follows:

“(3) The combination, With an overhead wire for receiving an underneath contact, of a switch plate attached to the wire in about the same horizontal plane as the wire.
“(4) The combination of a track having switches, an overhead conductor above the track and having switches, and a car on the track provided with a contact-carrying arm arranged to engage the conductor at a point in rear of the front wheels of the car.”
“(11) The combination, with an overhead line-wire, of a grooved contact device pressed against the wire and receiving the wire between the flanges of the groove, and a guiding switch-plate connected to the wire against which the said flanges bear in passing from one line to another.”
“(19) In an electric railway, the combination, with branching overhead conductors, of an upwardly-pressed contact-arm carrying a grooved wheel embracing the conductor, and a switch-plate at the branching point adapted to receive the tips of the wheel-flanges, and provided with depending ribs, between which the wheel is free to move laterally to engage with one of the branch conductors.
“(20) In an electric railway, the combination, with an overhead switch plate having depending ribs, but open at its extremities, of main and branch conductors extending from its two extremities, respectively, a vehicle, an [535]*535upwardly-pressed eontaet-arm attached to the vehicle and tending to move laterally therewith, and a track-switch for the vehicle located so as to operate in advance of the conductor-switch.”
“(23) The combination, with branching overhead conductors, of a vehicle having a laterally-swinging contact-arm pressed upward to engage the conductors, and a switch-plate at the branching point having depending sides, but open at its extremities, the interior width of the plate between the sides being greater than the thickness of the contact-wheel, whereby the wheel is free to move laterally with relation to the main conductor and engage one of the branching conductors.”
“(25) In a branching electrin railway, the combination of a track-switch, an overhead conductor-switch, and a vehicle having a rearwardly-extending contact-arm, whereby the track-switch will operate in advance of the conductor-switch.
“(26) In a branching electric railway, the combination, with a vehicle, of a track-switch, an overhead conductor-switch, and a contact-arm extending upward from the vehicle to the conductor, and so located relatively to the length of the vehicle and the two switches that the lateral movement of the vehicle will give a corresponding movement of the contact device on the conductor-switch.
“(27) In a branching electric railway, the combination, with a vehicle, of a track-switch, a contact device consisting of a trailing spring-pressed arm having a grooved contact-piece embracing the conductor and guided thereby, the said arm being joined to the car and tending to move laterally therewith, and an overhead conductor-switch adapted to engage the contact-piece and whereby the extremity of the arm is flexibly guided from main to branch conductor.”

In substance it will be sepn that the patent involves an overhead conductor in connection with a switch-plate, substantially in the same plane, made to receive an underneath contact with a trolley arm and having depending guides or flanges to direct the trolley wheel into the desired branch of the switch. In connection with this switch-plate, the claims call variously for necessary operating elements, such as surface tracks, switch tracks, a spring pressed and freely jointed trolley pole contacting from below with the overhead switch some appreciable distance behind the forward wheels of the vehicle, so that it may be directed by the movement of the car into the proper branch of the switch, a car or other vehicle moving upon the tracks, and a grooved contact piece or wheel on the arm or pole. The only feature of the- patent deemed necessary to be considered here is the switch, which seems to me to be of a primary • character, mainly in the fact that it leaves the trolley wheel free to respond to the actuating movements of the car communicated through the trolley arm. In adjusting the conducting wire to the switch, there was discovered a slight perpendicular jog. The wheel, traveling upon its flanges, would necessarily spring up somewhat as it left the open ends of the switch and again contacted with the wire. To improve upon the device of the patent in suit in this and other respects, and while the patent of this suit was pending in the Patent Office (delayed without the fault of complainant’s grantor, it is claimed), complainant applied for, and received on November 20, 1888, .patent No. 393,278 for what he terms certain new and useful improvements in switches for overhead conductors. This patent covers six claims, only claims 2 and 3 of which are set up in defense in defendant’s brief. They read as follows:

[536]*536“(2) A switch for electric conductors, comprising a contact plate or surface, ribs or arms attached to said plate and separate at their inner extremities to allow a contact device to pass from one to the other between them in contact with the plate, and electrical conductors secured to the ribs or arms, substantially as described.
“(3)' A switch for electric conductors, comprising a contact plate or surface, ribs or arms electrically connected therewith, and conductors secured to the ribs or arms and arranged to permit the passage of a contact wheel from one to the other across the space between said conductors bridged by the plate or surface, substantially as described.”

The device of these claims differs from that of the patent in suit in placing ribs or raised track pieces against the under face of the switch along which the grooved trolley wheel may travel with certainty. These ribs are shaped to fit the wheel groove, have electrical connection with the conductor, and are so adjusted as to receive the wheel in the same plane as that which it occupies with reference to the conductor. The ribs terminate before reaching the central portion of the switch plate, leaving the wheel free to move along the under side of the switch plate to' the proper branch track. This device amounts to a substantial improvement upon the patent in suit and does not fall within the rule against double patenting. It does, however, appropriate the patent in suit bodily, so far as necessary for the new combination. Why any one prosecuting an interference with regard to the patent in suit so vigorously as to succeed in delaying its issue for four years should allow this improvement patent to go out without an attempt to protect his rights may well cast some doubt upon the warlike spirit of the contestants. It is the device used by the defendants.

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Cite This Page — Counsel Stack

Bluebook (online)
143 F. 534, 1906 U.S. App. LEXIS 4647, Counsel Stack Legal Research, https://law.counselstack.com/opinion/thomson-houston-electric-co-v-illinois-telephone-const-co-circtndil-1906.