US951080A

US951080A - Gas-engine muffler.

Info

Publication number: US951080A
Application number: US49146209A
Authority: US
Inventors: John Kellington
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-04-22
Filing date: 1909-04-22
Publication date: 1910-03-01
Anticipated expiration: 1927-03-01

Description

J. KELLINGTON.

GAS ENGINE MUPPLER. APPLICATION FILED APR. 22, 1909.

951,080. Patented Mar. 1, 1910.

WITNESSES.- INI/ENTOR www Jahn jemyzm ATTH/VEY JOI-IN KELLINGTON, NEW WESTMINSTER, BRITISH COLUMBIA, CANADA GAS-ENGINE MUFFLER.

Specification of Letters Patent.

Patenten Mar, i, icio.

Application tiled April 22, 1969. Serial No.'491,462.

To all whom it may concern:

Be it known that I, JoiiN KELLINGTON, citizen of the Dominionof Canada, residing at New llivestininster, in the Province of British Columbia, Canada, have invented a new and useful Improvement in Gas-Engine Mufflers, of which the following is a specification.

This invention relates to a muffler for a high pressure steani or for an internal combustion engine which is designed to effectually soften the noise of the exhaust without materially lesseniiig the efficiency of the engine.

As at present designed, miitllers so seriously interfere with a gas engine eliiciency that they are seldom made use of. This reduction of efficiency is due to the obstriicder.

tion which they cause to a free exhaust and the consequent back pressure in the cylinl overcome these objections in the invention which is the subject of this application by delivering the exhaust into an annular space in which annular space are projections which interfere with 'the direct passage of the escaping gases, but the obstructions are rotated in the direction of escape so that they do not interfere with the free escape of the exhaust to an extent that will cause a back pressure in the cylinder. The means by which l attain this result are full explained in the following specification re erence being made to the drawings by which it is accompanied in which;

Figure 1. is a longitudinal section through the niiitller. Fig. 2. a vertical cross section of the same, and Fig. 3. a developed plan of a section of the iniitliing surface. j

In these drawings 2 represents a cylinder or drunirotatable on its axis either on the driving shaft of the engine or on atsupplemeiitary shaft 3 driven therefrom. This cylinder 2 is provided on its exterior surface with a series of projections 4 which are preferably rectangular and placed in rows parallet to the axis of rotation, those of each row heilig staggered or placed opposite to the intervals of the adjacent rows. lnclosing this rotatable cylinder 2 and its projections and closely fitting the same is a casing 5 secured tothe base or foundation plate of the engine and may appropriately carry the hearings 8 in which the shaft 3 of the cylindcrf.) rotates. An annular space filled with staggered projections is thus provided into which is delivered at an angle toward the direction of rotation the exhaust 6 of the high pressure steam or gas engine which exhaust thus impinges on the projections as the cylinder 2 rotates and tliiisprevents the miittling obstructions from interfering with the freedom of the exhaust to an extent that will cause any considerable back pressure in the cylinder.

The exhaust delivery 7 may be taken from the periphery of the casing adjacent to the inlet so that' the exhaust travels very nearly around the complete circle, or may drawn from any closing casing.

The device is particularly applicable to a rotary' engine of particular design which is the subject of a in which engine is a rotata may be provided with the projections 4 and casing 5 to form a muiiler but the invention is also applicable to any engine. l

The device is simple an inexpensive and will not only eectually maille a sharp exhaust but does so Without causing a back pressure in the cylinder as the obstructions are .moved in the direction of the flow of the exhaust. Although revision will be made lfor rotating the muing cylinder such will absorb little or no power as the impact of the incoming exhaust on the projections will assist rotation.

Having now particuilarly described my invention and t manner of its operation l hereby declare that what l claim as new and desire to be protected in by Letters Patent is;

l. A gas engine muitler comprising a rotatable cylinder having a fplurality of rpjections on its outer sur ace arrange in rows parallel to the axis of rotation, said projectionsof each row being spaced apart from one another a distance equal to the le cylinder which width of a projection, and said rows of projections being spaced one row from the other a distance equal to the length of a projection, said rows lbeing arranged in staggered relation with one another to form spaces around the a casing inclosing said cylinder and its pro- 'ections, an entrant port through said casing the full width thereof and arranged tangentially to said cylinder, said casing having an exhaust port arranged tangentially to said cylinder, the full width of the casing, substantially as shown and described.

2.V A mulier for gas engines comprisingl a rotatable cylinder having a plurality of rows e withconvenient part of the iii-- separate g atent application periphery of the cylinder,

of projections on its peripheral surface, said rows being arranged parallel to the axis of rotation of the cylinder, and the projections of one row being staggered with relation to those of the next adjacent row7 a easing inclosing the cylinder and its projections, said casing having an inlet port the full Width of the casing and having an exhaust port in close juxtaposition to the inlet port also 10 extending the full Width of the casing, all' being arranged substantially as shown and JOHN KELLINGTON.

Witnesses: M. SINCLAIR, ROWLAND BRI'ETAIN.