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US Patent: 713,792
Explosive Engine
Patentee:
John A. Ostenberg - Westminster Station, Windham County, VT

USPTO Classifications:
123/190.3, 123/434, 123/65R, 123/73B, 123/73D

Tool Categories:

Assignees:
Frederick M. Gilbert - Walpole, Norfolk County, MA

Manufacturer:
Abenaque Machine Works - Westminster Station, Windham County, VT

Witnesses:
H. J. Livermore
Nancy P. Ford
John F. Prentiss
Jason J. Maloney

Patent Dates:
Applied: Jun. 01, 1897
Granted: Nov. 18, 1902

Patent Pictures:
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"Vintage Machinery" entry for Abenaque Machine Works
Description:
Abstract:

The present invention relates to a gas-engine and is embodied in what is known as a two cycle engine or one in which the air which forms part of the explosive mixture is compressed at each stroke and admitted to the cylinder at the end of the stroke, the products of combustion or exhaust being simultaneously driven out and the new explosive mixture taking their place.

The invention is mainly embodied in an improved construction and arrangement of the inlet and exhaust ports, the object being to provide means whereby the incoming charge of compressed air and gas may be suddenly and forcibly injected through the products of combustion toward the closed end of the cylinder or explosion-chamber, which is so shaped as to gather and confine the injected charge after it has penetrated the products of combustion. To this end the charge is admitted through a duct formed in the piston itself and terminating in a nozzle or tube in line with the axis of the cylinder and pointed toward the closed end thereof, the capacity of said tube being no greater than that of any part of the inlet-passage through which the charge is admitted to the cylinder. The said inlet-passage is shown as having an inlet-opening through the side wall of the cylinder, into alignment with which the piston duct will come at the end of the effective stroke of the piston, the charge being admitted to the inlet-passage and compressed therein during such outward stroke, so that when the piston-duct is momentarily opened the charge is suddenly and forcibly injected through the injector-nozzle, as it may be termed, and is accumulated and concentrated in the explosion-chamber prior to ignition. The exhaust-port is also arranged in the side wall of the cylinder and is adapted to be opened and closed by the piston itself, the said exhaust-port being preferably opened somewhat in advance of the opening of the inlet, so that the products of combustion of the old charge have already begun to escape when the new charge is injected, as described. The invention is further embodied in novel means for operating the igniting device, (which device may be of any suitable or usual kind,) the said operating means being such that they can also be utilized for operating the pump to supply a liquid explosive, it such is to be employed, or a pump for circulating cooling fluid around the cylinder, or both, the pump for the explosive being also so arranged that it can be disconnected from the operating means and manually operated to charge a reservoir prior to the starting of the engine or so that it can be permanently disconnected if the pump is not to be used. The present invention relates to a gas-engine and is embodied in what is known as a two cycle engine or one in which the air which forms part of the explosive mixture is compressed at each stroke and admitted to the cylinder at the end of the stroke, the products of combustion or exhaust being simultaneously driven out and the new explosive mixture taking their place.

The invention is mainly embodied in an improved construction and arrangement of the inlet and exhaust ports, the object being to provide means whereby the incoming charge of compressed air and gas may be suddenly and forcibly injected through the products of combustion toward the closed end of the cylinder or explosion-chamber, which is so shaped as to gather and confine the injected charge after it has penetrated the products of combustion. To this end the charge is admitted through a duct formed in the piston itself and terminating in a nozzle or tube in line with the axis of the cylinder and pointed toward the closed end thereof, the capacity of said tube being no greater than that of any part of the inlet-passage through which the charge is admitted to the cylinder. The said inlet-passage is shown as having an inlet-opening through the side wall of the cylinder, into alignment with which the piston duct will come at the end of the effective stroke of the piston, the charge being admitted to the inlet-passage and compressed therein during such outward stroke, so that when the piston-duct is momentarily opened the charge is suddenly and forcibly injected through the injector-nozzle, as it may be termed, and is accumulated and concentrated in the explosion-chamber prior to ignition. The exhaust-port is also arranged in the side wall of the cylinder and is adapted to be opened and closed by the piston itself, the said exhaust-port being preferably opened somewhat in advance of the opening of the inlet, so that the products of combustion of the old charge have already begun to escape when the new charge is injected, as described. The invention is further embodied in novel means for operating the igniting device, (which device may be of any suitable or usual kind,) the said operating means being such that they can also be utilized for operating the pump to supply a liquid explosive, it such is to be employed, or a pump for circulating cooling fluid around the cylinder, or both, the pump for the explosive being also so arranged that it can be disconnected from the operating means and manually operated to charge a reservoir prior to the starting of the engine or so that it can be permanently disconnected if the pump is not to be used.

Claims:

1. In a gas-engine, the combination with the cylinder; of an explosion-chamber smaller in diameter than the cylinder; an igniting device for exploding a charge admitted to said explosion-chamber; an inlet-port for the charge and an exhaust-port for the products of combustion; means for opening both of said ports when the piston has reached substantially the end of its outstroke, and for closing the same during the in-stroke of the piston; a source of compressed explosive adapted to be admitted through said inlet upon the opening of the same; and a passage through the piston terminating in an injector-nozzle in line with the axis of the cylinder and pointing toward the closed end thereof, whereby the charge admitted is injected in a jet through the spent charge toward the closed end of the cylinder and concentrated in the said explosion-chamber, substantially as described.

2. In a gas-engine, the combination with a cylinder having at its closed end an explosion chamber smaller in diameter than the cylinder; of an inlet-port for the charge and an exhaust-port for the products of combustion arranged to be substantially simultaneously opened when the piston reaches substantially the end of its outstroke, and to be closed in response to the inward movement of said piston; means for compressing, during the outstroke of the piston, the charge which is to be admitted through the inlet-duct when the same is opened; and an injector-nozzle formed in the piston and in line with the axis of the cylinder through which nozzle the charge is adapted to be injected in a jet directed through the products of combustion and concentrated in the explosion-chamber, substantially as described.

3. The combination with the cylinder having the charge-inlet and exhaust-outlet of the piston at having the duct adapted to come in line with the inlet when the exhaust-outlet b is open; the injector-nozzle at the end of said duct a in line with the axis of the cylinder and directed toward the closed end thereof, whereby the charge is injected through the products of combustion toward the closed end of the cylinder; and the explosion-chamber smaller in diameter than the cylinder in said closed end, substantially as described.

4. In a gas-engine, the combination with the cylinder and piston; of a source of compressed air; a duct leading from said source toward the interior of the cylinder, said duct being adapted to be closed except when the piston is substantially at the end of its effective stroke; an inlet to said duct for admitting an explosive thereto; a choked passage in said duct adjacent to said inlet and between the same and the source of compressed air; and a passage through the piston adapted to communicate with said duct when said piston is substantially at the end of its effective stroke, said piston-passage terminating in an injector-nozzle in line with the axis of the cylinder and directed toward the closed end thereof, an explosion-chamber smaller in diameter than the cylinder at the said closed end and an exhaust-outlet adapted to be opened during the admission of the charge substantially as described.

5. In an explosion-engine, the combination with a mechanically-operated igniting device, of means for operating the same consisting of an arm, a guide for the said arm having a rectilinear movement, the said arm being pivotally connected to said guide, means for connecting one end of said arm to the engine-shaft to produce an oscillating movement of said arm, and a pump for supplying the engine with an explosive, the plunger of said pump being connected with said guide, substantially as described.

6. In an explosion-engine, the combination with a mechanically-operated igniting device, of means for operating the same consisting of an arm, a guide for the said arm having a rectilinear movement, the said arm being pivotally connected to said guide, means for connecting one end of said arm to the engine-shaft to produce an oscillating movement of said arm, a pump for supplying the engine with an explosive, the plunger of said pump being connected with said guide, and means for disconnecting said pump-plunger from said guide, substantially as described.

7. In an explosion-engine, the combination with a mechanically-operated igniting device, of means for operating the same consisting of an arm, a guide for the said arm having a rectilinear movement, the said arm being pivotally connected to said guide, means for connecting one end of said arm to the engine-shaft to produce an oscillating movement of said arm, and a pump for circulating cooling fluid around the cylinder having its plunger connected with said guide, substantially as described.

8. In an explosion-engine, the combination with a pump for supplying an explosive to the cylinder and a mechanically-operated igniting device for the said explosive, of a common actuating device for said pump and igniting device comprising an arm pivotally connected at a point intermediate between its ends with the pump-plunger, the said arm being adapted at a point near one end thereof to engage and operate the igniting device, and means for producing an oscillating movement of said arm at the other end thereof, substantially as and for the purpose described.

9. In an explosion-engine, the combination with a gasolene-pump provided with a reciprocating plunger, of a water-pump for circulating water through a water-jacket, the said water-pump also having a reciprocating plunger, the cross-head connecting said plungers, an arm pivotally connected with said cross-head and provided at one end with an eccentric-strap adapted to cooperate with an eccentric operated by the engine-shaft, an igniting device for the engine, and an actuator for said igniting device at the other end of said arm, substantially as described.

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