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US3776153A Expired / Lapsed US ⏱️ 0.0 years remaining

Self-propelled tie destroying machine

Assignee: CANNON Inc
•
Filing: 1972-11-09
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Granted: 1973-12-04
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Expires: 1992-11-09
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Abstract

Abstract A device for destroying railroad ties which comprises fire brick insulated open-topped fire box mounted on a self-propelled tracktravelling vehicle. The device is provided with at least one plenum chamber from which extends, along the top of one side of the fire box, a series of nozzles which are downwardly and inwardly directed into the box. These nozzles deliver air for combustion across the top of the box so as to form an air curtain which inhibits the escape of particles of ties being burned in the box. An endless conveyor is located adjacent the open top of the box on the side remote from the nozzles and ties are loaded onto this conveyor by means of a crane. The conveyor has a series of hydraulically operated pusher plates arranged longitudinally thereof which are operated by temperature sensitive elements within the fire box to distribute ties from the conveyor into area in the box where the combustion of ties already therein is substantially complete. The device also envisages the provision of a water wall boiler within the box which generates steam to drive a turbine which in turn drives air compressor motors to pressurize the air for the nozzles. An alternative embodiment includes a blower and a ducting system which will preheat ambient air and utilize the air to form the air curtain.

Inventors

  • 👤 J Stewart

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 22:40
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/34; F23G5/40; F23G7/00; F23G7/003; Y; Y02; Y02E; Y02E20/00; Y02E20/12

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 117 words
A device for destroying railroad ties and the like comprising an open-topped fire box mounted on a self-propelled vehicle for movement along a railroad track; nozzle means extending longitudinally of and adjacent one edge to the box and downwardly and inwardly directed thereinto for providing a curtain of combustion supporting air under pressure across the top of the box to inhibit the escape of particles of ties being burned therein; means for delivering ties to be burned in the box including an endless conveyor longitudinally located along the upper edge of the fire box opposite said nozzles; and means to distribut the ties selectively in the box comprising a series of longitudinally spaced ram driven pusher plates.
Claim 2
Independent Claim 117 words
A device for destroying railroad ties and the like comprising an open-topped fire box mounted on a self-propelled vehicle for movement along a railroad track; nozzle means extending longitudinally of and adjacent one edge to the box and downwardly and inwardly directed thereinto for providing a curtain of combustion supporting air under pressure across the top of the box to inhibit the escape of particles of ties being burned therein; means for delivering ties to be burned in the box including an endless conveyor longitudinally located along the upper edge of the fire box opposite said nozzles; and means to distribut the ties selectively in the box comprising a series of longitudinally spaced ram driven pusher plates.
Claim 3
Dependent Claim 25 words
Apparatus as claimed in claim 1 in which heat exchange means is provided in the fire box and comprises a water wall boiler and superheater.
Claim 4
Dependent Claim 35 words
Apparatus as claimed in claim 2 in which a steam turbine driven fan means is provided for pressurizing the air curtain and in which steam from the heat exchanger is used to drive the turbine.
Claim 5
Dependent Claim 49 words
Apparatus as claimed in claim 1 in which the means to distribute the ties are controlled in response to a signal obtained from temperature-sensitive means in the fire box whereby to supply new ties to areas of the fire box where combustion of prior fed ties is substantially completed.
Claim 6
Dependent Claim 82 words
A self-contained device for destroying railroad ties and the like comprising an open-topped fire box mounted on a self-propelled vehicle for movement along a railroad track; means on the vehicle for providing a curtain of combustion supporting gas under pressure from one edge of the box across the top thereof to inhibit the escape of particles of ties being burned therein; and means mounted on the vehicle for delivering ties to be burned in the box and to distribute them selectively therein.
Claim 7
Dependent Claim 82 words
A self-contained device for destroying railroad ties and the like comprising an open-topped fire box mounted on a self-propelled vehicle for movement along a railroad track; means on the vehicle for providing a curtain of combustion supporting gas under pressure from one edge of the box across the top thereof to inhibit the escape of particles of ties being burned therein; and means mounted on the vehicle for delivering ties to be burned in the box and to distribute them selectively therein.
Claim 8
Dependent Claim 43 words
Apparatus as claimed in claim 5 in which the combustion supporting gas is air and the means for providing it, is a blower, inlet means to supply air to the blower, and outlet means to distribute air from the blower as the curtain.
Claim 9
Dependent Claim 36 words
Apparatus as claimed in claim 6 wherein the inlet means to supply air to the blower is such that the air passes along the fire box walls preheating the air and providing cooling for the walls.
Claim 10
Dependent Claim 22 words
Apparatus as claimed in claim 6 wherein the outlet means is a longitudinal duct downwardly and inwardly directed into the fire box.

References Cited (Backward Citations)

US526284A Cited
US3128808A Cited
US2961977A Cited
US3392690A Cited
US3465696A Cited
US3610180A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-03 1977-06-04 1977-12-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-03 1981-06-04 1981-12-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-03 1985-06-04 1985-12-04 $7700.00 Window Closed / Lapsed

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