Smith v. Smith

31 App. D.C. 518, 1908 U.S. App. LEXIS 5660
CourtCourt of Appeals for the D.C. Circuit
DecidedJune 2, 1908
DocketNos. 494, 495 and 496
StatusPublished

This text of 31 App. D.C. 518 (Smith v. Smith) is published on Counsel Stack Legal Research, covering Court of Appeals for the D.C. Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Smith v. Smith, 31 App. D.C. 518, 1908 U.S. App. LEXIS 5660 (D.C. Cir. 1908).

Opinion

Mr. Justice Van Orsdel

delivered the opinion of the Court:

These are appeals from decisions of the Commissioner of Patents in interference proceedings. The cases were argued together, and will be so considered in this opinion. The subject-matter of the interference is a safety device for elevators. In No. 494 judgment was rendered by the Commissioner in favor of Patrick F. Foley as to all counts, excepting count 4, which was found to be covered by a former patent. From this decision, neither E. C. Smith nor Anderson have appealed. Foley has not appealed from the rejection of the claims embraced in count 4. Hence the real parties in No. 494 are Foley and E. A. Smith. In No. 495, the Commissioner gave judgment in favor of Foley, except .as to counts 6 and 7, on which judgment was rendered in favor of E. A. Smith. E. O. Smith has not perfected any appeal in this case. Neither has Foley appealed from the judgment rendered in favor of E. A. Smith as to counts 6 and 7. Hence the issue in this case is narrowed to Foley and Smith as to all counts involved, excepting counts 6 and 7. In No. 496 the Commissioner gave judgment in favor of Anderson, and from this decision E. A. Smith has appealed.

As to the parties involved in this controversy, E. A. Smith filed his application on February 6, 1905; J. N. Anderson’s application was filed February 17, 1905, and P. F. Foley filed February 17, 1905.

Originally the issue in case No. 494 involved seventeen counts; in No. 495 ten counts; and in No. 496 two counts. The twenty-six counts covered in different phraseology the same matter, and the issue here involved is embraced in the following counts:

The issue in No. 494:

“1. An elevator car, a clamping device therefor, and a differ[520]*520ential screw having a high pitch thread and a low pitch thread for actuating the clamping device.
“2. An elevator car, a clamping device therefor, a high pitch screw and a low pitch screw, said screws arranged to actuate the clamping device.”
“9. In a safety device for elevators, the combination of a car, guides over which said car is adapted to run, a clamping device on the car, a high pitch screw arranged to move the clamping device against the guides, a low pitch screw arranged to tighten the clamping device on the guides, and means for actuating the screws by the motion of the car.”
“11. The combination with an elevator car, guides over which the ear is adapted to move, a clamping device on the car, a high pitch screw arranged to move the clamping device against the guides, a low pitch screw arranged to tighten the clamping device on the guides, and a governor connected to be. run by the car, and arranged to actuate the screws when the speed of the car reaches a predetermined limit.”
“17. In an elevator safety device, the combination of a car, guides therefor, clamping devices adapted to engage the guides, right- and left-hand screws arranged to move the clamping devices quickly against the guides, right- and left-hand screws of low pitch arranged to tighten the clamping devices on the guides, and means for actuating the screws by the movement of the car.”

The issue in No. 495:

“1. In an elevator safety device, the combination with hoist-way rails, of friction members adapted to engage said rails, a shaft having portions provided with'threads of the same kind or direction but of different pitch, means connecting said threaded portions to said friction members, and means for automatically rotating the shaft.”
“10. In an elevator safety device, the combination of a car, guides therefor, clamping devices adapted to engage the guides, right and left-hand screws arranged to move the clamping devices quickly against the guides, right- and left-hand screws of low pitch arranged to tighten the clamping devices on the [521]*521guides, a governor arranged to actuate the screws when the speed of the car reaches a predetermined limit, and means for actuating the screws by hand.”

The issue in No. 496:

“1. A safety device for elevators, comprising a drum, a safety rope for turning the drum, brakes, members connected with the drum, rods for operating the brakes, said rods being connected with the members to move endwise, and means for first imparting a bodily endwise movement to the members and rods so as to apply the brakes quickly on rotating the drum, and, subsequently, rotating said members in unison with the drum to impart endwise movement to the rods for actuating the brakes slowly and more powerfully.
“2. A safety device for elevators, comprising a drum, a safety rope, the ends of which are secured to the drum, brake levers, members on which the drum is journaled, rods having heads at their outer ends for operating the brake levers, said rods being carried by the members and connected therewith to move endwise, and means for first imparting a bodily endwise movement to the members and, rods to apply the brakes quickly on rotating the drum, and subsequently rotating the said members in unison with the drum to impart endwise movement to the rods for actuating the brake levers slowly and more powerfully.”

The invention here in controversy is described in the opinion of the Commissioner of Patents as follows: “The subject-matter of the interference is a safety device for elevators; and while the devices of the respective parties are different, each is designed to overcome certain defects alleged to exist in what was known as the Ellithorpe safety. In this device there are mounted on the car clamping jaws in position to grasp the guide rails at either side of the elevator shaft. These jaws are located on the outer ends of levers pivoted intermediate their length and provided on their inner ends with means adapted to engage actuating cams. These cams are capable of movement in and out between said inner ends of the levers, and by this movement swinging the levers to bring the jaws into engagement with the [522]*522guide rails. In order to effect this movement of the cams, they are mounted on the outer ends of shafts which are threaded on their inner ends. These threads, which are of reverse kind for the opposite sides of the car, work in corresponding threads in opposite sides of a drum capable of being turned by the governor rope. This rope is attached to the drum, and, after a number of turns around it, passes to the top of the shaft, over a pully geared to the governor, and then to the bottom of the shaft, around another pulley and back to the car. This rope normally travels as the car does, and so the drum on the car is stationary. But if the car attains too high a velocity, the governor acts to grasp the rope, holding it stationary and thus unwinding it from the drum. This causes the drum to rotate, moves the screw shaft and its attached cams longitudinally, and imparts movement to the jaws which grasp the rail, thereby stopping the movement of the car. The invention of each of the parties to the interference is designed to move the jaws quickly until they come into contact with the rails, and then move them more slowly but more powerfully to force them tightly against the rails, and thus bring the car to a stop.”

The issue before us in Nos. 494 and 495 is practically narrowed to a controversy between the applicants Patrick F. Foley and E. A. Smith.

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Bluebook (online)
31 App. D.C. 518, 1908 U.S. App. LEXIS 5660, Counsel Stack Legal Research, https://law.counselstack.com/opinion/smith-v-smith-cadc-1908.