US761363A

US761363A - Explosive-engine.

Info

Publication number: US761363A
Application number: US13525702A
Authority: US
Inventors: David L Doering
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-12-15
Filing date: 1902-12-15
Publication date: 1904-05-31
Anticipated expiration: 1921-05-31

Description

V D. L. DOERING.

EXPLOSIVE ENGINE.

APPLICATION FILED DEC. 16, 1902.

2 SHEJETS-SHEET'1- '13 (arbor/e15) \A G, g

Wifrmsses. [nwnor PATENTED MAY 31', 1904 I UNITED STATES- Patented May 31, 1904.

PATENT. OFFICE.

3 EXPLOSIVE-ENGINEI.

SPECIFICATION forming part of Letters Patent No. 761,363, dated May 31, 1904.

' Application file 'December 15, 1902. Serial No. 135,257. (No model.)

To all whom it may concern.-

- Be it known that 1, DAVID L. DOERING, a citizen of the United States, residing at Kansas City, in the county. of Jackson and State of Missouri, have invented certain new and useful Improvements in Explosive-Engines;

and I do declare the following to be a full, clear, and exactdescription of the .invention, such aswill enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My present invention relates to engines,

and has for its object to provide mechanism,

adapted to greatly reduce the, resistance in engines, whether they areoperated by steam or other power. 1 i 7 Further objects of my invention are to provide many improved details of structure. In the following specification and accompanying drawings I have described and shown my invention as the same is when attached to rotary engines and when gas or gasolene is used as a motive power.' 7 In the drawings, Figure lis a side-elevation of my engine complete. Fig. 2 is a front end View of the same. Fig. 3 is a rear end view of the same. Fig. 4 is a longitudinal sectional View of the compressioncylinder. Fig. 5 is a cross-section through the'compression and engine cylinders. Fig. 6 is a longitudinal section through the engine-cylinder and piston. Fig. 7 is a cross-section through the pump-head and the compressioncylinder head, showing the connection between the two parts; and Fig, 8 is adetail sectional View showing the inclined ways at the end of the abutment.

Referring to the drawings in detail, 1 is the bed-plate, and 2 designates'the standards supporting a rotary or other engine 3, which may be of any suitable type, but is preferably of thetype herein shown and described. Such engine is providedwith a cylindrical casing, on the inner side of which is secured an inclined abutment 4, extending between the exhaust-passage 5 and the passage 6 between the vcompression-cylinder and the encarbureter.

cured against rotation with'the piston 7 by bolts 10, seated in the casing of the engine.

The piston 7 is provided with one or more recesses 11. (One only shown in drawings, see Fig. 6.) The recess 11 isadapted to receive a piston-head or. paddle l2, maintained in pro- -jected position by coil-spring l3, seated in the bottom of the recess 11 against shaft 8-.

Shaft 8 is provided with a central passage or duct 14, extending therethrough to a point immediately beneath the recess 11, into which the same is tapped. vAt theend of the abutment 4, near the passage 6, are a pair of inclined blocks or projections 15, spaced apart and arranged on edge and forming ways for the descent of the piston-head 12. At its outer end the shaft 8 is suitably journaled at the top of one of the standards 2 and is provided with a bevel-wheel 16, keyed thereto and engaging a second bevel-wheel 17 keyed to the shaft 18, journaled on standard 19. Shaft 18 is provided at its oppositeend with a suitableeccentricv gear 20, connecting it with the piston-rod 21 of the pump 22, mounted on the top of the compression-cylinder, to be hereinafter described.

The piston-rod 21 is provided at its inner end with a piston 23, which reciprocates within the casing of the pump 22. The head 24 of the pump 22 has bolted thereto on top a valve-.

housing 25, containing any suitable form of valve, (preferably a plugvalve,) and'the said housing 25 communicates with the pump-head 24 through perforation 26 therein.

27 is a supply-pipe leading to any suitable (Not shown.) The pipe 27 is coupled to the housing 25. .The valveinthe housing 25 has a stem 28 pivotally connected to the link-bar 29, pivotally connected to an upright arm 30, slidably mounted on the piston-rod 21 and held normally projected by a spring 31 on said piston-rod 21.

32 is a collar rigidly secured to piston-rod 21 and adapted to force ar m 30 inwardly in points normally out of contact.

opposition to spring 31 upon the inward stroke of the piston-rod 21. In the outward-projected position of the arm the valve-stem 28 is in a position holding the valve in the housing 25 open. s

The compression-cylinder 33 has in its head an elbow-duct 34, connecting the interior of the pump-head 24 with the interior of the compression-cylinder or the compressionchamber 35. Closing duct 34 at its lower end is a spring-controlled valve 36, opening into the chamber 35 andhaving its stem 37 extending transversely through the duct 34 and the head of the compression-cylinder and through a suitable stufIing-box '38 exterior to the cylinder. Between the stuffing-box 38 and the outer end of the stem 37 is mounted on the said stem a spring 39, controlling Valve 36.

40 is a sparker of usual structure located within chamber 35 and having two contact- One of the contact-points of the sparker 40 is capable of oscillation and passes through a suitable stuff-- ing-box on the exterior of the cylinder 33 and has at its outer end a spring-pressed arm 41. At the top of the pump-head 24 is a bellcrank 42, fulcrumed at 43. Connecting the bell-crank 42 and the arm 41 of the sparker 40 is a link-bar 44. 45 is a spring controlling arm 41 and serving to maintain the engaging arm of the bellcrank 42 in perpendicular position.

The link-bar 29 projecting beyond the point where the valve-stem 28 is pivoted thereto, upon the inward stroke of the piston-rod 21 the end 46 of'the link-bar 29 depresses upon engagement the bell-crank 42, bringing the contact-points of the sparker 40' together.

Centrally located within the compressioncylinder 33 and forward of the passage 6 therein is a valve-seat 47, seating the valve 48, having a rear concave face 49 and carried by a valve-stem 50, passing through the rear end of the cylinder 33. a spring 51 thereon between the valve 48 and the rear end of the cylinder 33. The stem passes through a suitable stuffing-box 52 at the end of the cylinder, and its outer end is slidably journaled in a frame 53, bolted to the -end of the cylinder 33. Between the stuffingbox 52 and the frame 53 is positioned a spiral spring 54, the tension of which may be regulated through the adjustment of a collar 55 on the stem 50.

56 is a pump having a suitable water-supply pipe 57 tapped into the same and also a suitable exhaust-pipe 58 connecting the same with the duct or passage in the shaft 8. The

pump 56 is operated by eccentric gear 59, located on shaft 18 between bevel-wheel 17 and standard 19.

The operation of myimproved engine is as follows: Upon the outward stroke of the piston-rod 21 the spring 31 forces the arm 30 out- The stem 50 carries ward, opening the valve in the housing 25 and allowing the piston 23 to draw carbureted air and gasolene or other suitable mixture through pipe 27 into pump-head 24, suction through duct 34 being prevented by valve 36, which is normally closed. Upon the inward stroke of the piston 23 the valve in housing 25 is closed, and the mixture which has been drawn into the pump-head 24 is forced through duct 34, overcoming valve 36 and passing into chamber 35. At the same time sparker 40 is operated through contact of frictionwheel 46 on the link-bar 29 with bell-crank 42, thereby exploding the charge within chamber 35. The pressure from the exploded gases overcomes valve 48 and escapes through passage 6 into the engine-casing, striking paddle 12 and forcing same over inclined abutment 4, the spring 13 giving way and allowing the depression of the paddle 12. At the end of the abutment the paddle 12 descends over the ways 15, which are spaced apart to permit the pressure to find its way to the rear of the paddle, and thereby prevent the same from being forced back against the abutment, which would result in stopping the engine. The pump 56 supplies a continual stream of water through duct 14, which escapes through recess 11 and exhaust-port 5 and acts to keep the parts of the engine in cooled condition.

The spring 54 may be tensioned to any strength to resist any degree of pressure within the chamber 35. The spring 51 and the concave face of the valve 48 create suliicient resistance to the valve to prevent injury to the same upon its action.

Whensteam is employed in my engine, the pump 22, the sparker 40, and the valve controlling the pipe 27 are dispensed with, and, the pipe 27 being connected up to a suitable steam-boiler at one end and being connected at its other end to the duct 34, upon the steam within the chamber 35 reaching a suitable pressure valve 48 is overcome and the steam escapes into the engine-casing, striking the piston-head or paddle 12 with results hereinbefore described.

I do not desire to be understood as limiting myself to the employment of a rotary engine in the use of my invention, inasmuch as the same may be attached to an ordinary reciprocating-piston engine or an engine of any other common type. 7

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

In an attachment for engines, the combination with the compressioncylinder having an outlet-passage intermediate its ends, an explosive-chamber portion in front of the outlet, an air-cushion portion in the rear of the outlet, forming a continuation of and of the same width as the explosive-chamber and an annular valve seat between the explosivechamber portion and the outlet reducing the diameter of the rearend of the explosive-chamber, of a valve normally covering the outlet having its front reduced and normally resting in thereduced portion of the explosive-chamher and seated upon the annular seat, and its rear face concaved and exposed to and ofa diameter approximately equal to the air-cushion portion of the compression cylinder, a valve-stem extending from the rear face of the IQ valve through an opening in the head of the DAVID L. DOERING.

-Witnesses:

HARRY A. KNI HT, ARCH M. EvANs.