US859205A - Air-jacket for cylinders of engines. - Google Patents

Description

No. 859,205. PATENTED JULYQ, 1907. P. DANIELSON & 0. ORONWELL. AIR JACKET FOR CYLINDERS 0F ENGINES.

APPLIOATI-ON FILED 00127, 1904,. V I

UNlTED STATES ATENT orrron.

FRANK DANIELSON AND orro ORONWELL, OF CHICAGO, ILLlNOIS.

AIR-JACKET FOB CYLINDERS OF ENGINES.

Specification of Letters Patent. I

Patented July 9,- 1907.

Application filed October 27,1904. Serial No. 230,213,

7, To all whom it may concern:

Be it. known that we, FRANK DANIELSON and Or'ro ORoNwELL, both citizens of the United States, and residents of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Im-,

air around them. This we accomplish by the means hereinafter fully described, and as particularly pointed out in the claims. p v v The drawings represent a vertical central section through the cylinder and parts of a gas engine cooperating therewith showingour improvements applied thereto.

In the drawings, .A represents the cylinder of a gas engine of the usual-construction and B representsthe piston reciprocating therein, which, through the medium of a pitman a operates the crank O, and,

through the latter actuates and revolves the hori zontal shaft D. The general construction and operation of all of these parts are the same as in any ordinary gas-ngineyand .during the operation thereof the cylinder,.unless' kept cool, becomes very hot.

.O1ir improvements for ridding the cylinder of this heat comprise an air jacket which consists of a series.

of corresponding circular rings d, d, d, d, which are preferably made of angular shaped metal and are of such dimensions that they snugly fit over the cylinder A, one above the other, with the inner edges of their inturned 'fianges in contact with the sides of the cylinder, and their vertical portions bounded by the same vertical plane, and forming a tight compact wall from top to bottom. The lowermost ring d of the series is, preferably, supported upon a circumferential flange e projecting from cylinder A, near its lower end, and there are a number, say five, of these rings, each supporting the one above it, between the flange e, and the projecting flanged circumferential edge 1" of the head E, closing the upper end of the cylinder.

Flange f of head E closes the space betweenthe side of the cylinder and the top edge of the vertical portion oi the uppermost ring d, and thus completes a series of annular air chambers surrounding the cylinder between flange e and the top of the cylinder. These annular air chambers are constructed'independent of each other if desired, and, in this event the circumar'nbient air in these chambers constitutes a cooling-jacket, which'contributes to keep the outer circumferential sides of jacket comparatively ;cool because of the circulation of. air as willbe hereinafter more fully described, while the heat of the cylinder is carried by their horizontal portions to the outer circumference of the jacket and there dissipated. Inorder to accomplish this result, however, it is desirable to make the rings of some metal which is a better condl ctor of heat than the castiron or steel of which the cylinder is made, and for this reason we with a series of holes g, g, and likewise provide the flange f of head Ewith holes h,-and then'pump air into the lowermost annular air chamber and thus keep a continual current of air passingthrough the said series of chambers from bottom to top. If desired an air pump may be employed for this purpose 1 which will be entirely independent of the engine. We preier, however, to inclose the crank O and pitman a of the engine in an air-tight case G which supports and is open to the lower end of cylinder A and to connect the interior of the chamber thus formed with the lowermost annular chamber surrounding the cylinder A by pipes H, H. Thus constructed during the downward movement of the piston the air will be forced out of the crank chamber to and out of the annular air chambers surrounding the cylinder, and during the up-stroke of the piston the air ,will be drawn into said crank chamber. If said crankchamber has no air inlet the air will simply'be inhaled and exhaled from the annular chambers of'the air-jacket; if however, it has a. valve controlled inlet, such as shown at I in the drawings, the air will be drawn into'the crank chamber during the up-stroke, and forced out of said annular chambers during the downstroke of theIpiston.

What we claim as new is: i

1. Iris cngine, an air-jacket consisting of'ja plurality of angular-shaped rings, the vertical portions of which form the outer wall of said jacket and are provided with a series of outwardly projecting circumferential fl'anges, the inner portions of said rings at right angles to the vertical portions thereof forming partitions that divide the dutcrior of said jacket into a like number of compartments, and a series of openings in said partitions which provide the circulation of air through said compartmen 2. In an engine, an air-jacket consisting of a'plurality' of rings, the vertical portions of which form the outer wall of said jacket and are provided with a series of out wardly projecting circumferential flanges theinner portions of said rings at right angles to the vertical portions: thereof forming partitions that divide the interior of said jacket into a like number of compartments, 0. series of openings in said partitiouswhich provlde the circulation of air through said compartments, and means for forcingthe air from the crank-chamber to and through said compartments.

3. In an engine, an air-jacket comprising a series of rings surrounding the cylinder, each provided with an inturned flange having a. plurality of openings therein and a series of circumferential flanges projecting from the outer circumference of said rings, said rings communicating with each other and providing chambers for the circulation' of air.

4. In an engine an air-jacket comprising a series of rings surrounding the cylinder, each provided with an inturned flange having a plurality of openings therein and a season series of circumferential flanges projecting from the outer circumferenceh of said rings, said rings communicating 15 this 5th day of February, 1903.

FRANK DANIELSON. OTTO CRONWELL.

Witnesses I FRANK D. THOMASON, E. K. LUNDY.

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