US1631721A - Hot-air stove - Google Patents

Description

June 7,1927. 7 1,631,721 DE BOISCHEVALIER HOT AIR STOVE Filed 001' 20, 1922 illlll INVENTOR v Patented dune 7, 1927.

UNITED; STATES 1,631,721 PATENT OFFICE.

HENRI mt IBOISCHEVALIEB, OF DETROIT, MICHIGAN, ASSIGNOR TO SOOIETE DU CAB- BUBAIEUB. ZENITH, OF LYON, FRANCE, A QOBPORA'I'ION OF FRANCE.

HOT-AIR STOVE.

Application filed October 20, 1922. Serial No. 595,879.

( The present invention relates to an accessory for use with an internal combustion engine and the carburetor therefor, whereby the air supplied to the carburetor may be preheated if desired.

At the present time it is customary to provide various forms of stoves or heaters by means of which it is possible to reheat the air supplied to a carburetor. rdfinarily,

however, stoves .for this purpose have been in the form of comparatively bulky castings thereby requiring considerable room and the use of a series of fastening devices for maintaining the same in the desired position. As

it is frequently desirableto remove such stoves to permit repairs on the engine, or

'. for other reasons, it is desirable that the stove shall be of comparatively simple constructionrequiring a minimum number of fastening devices.

By the present invention there is provided a stove for this purpose which may be easily and effectively clamped in position on an exhaust pipe or other heating member and which occupies a minimum amount of room.

- In the accompanyin drawings there is shown for purposes 0 illustration only, a

preferred embodiment of the present invention, it being understood that the drawings 9 do not define the limits of this invention, as changes may be made in the construction 1 and operation disclosed herein without dearting from the spirit or scope of my roader clam. 5 In the drawings,

Figure 1 is a perspective view'of a portion of an exhaust pipe having the improved stove in position thereon;

Figure 2 is a sectional view through the construction illustrated in Figure 1, certain of the parts being shown in elevation and other parts being broken away for sake of clearness. v Figure 3 is a transverse sectional view on thefline III-III of Figure 2; and

Figure 4 is a side elevation largely diagrammatic, illustrating the manner inwhich the stove may be connected to a carburetor. A hotair stove cdnstructed in accordance with the-present invention preferably comprises a' casing 2 of-sheetmetal of such "auge that the same is more or less flexible.

1 it the upper end of the casing there 'is formed a series of inwardly extending over-.

lapping projections 3 adapted to slide one upon the other and thereby permit the easing to conform to exhaust pipes 4:, or other heating members of varying diameters. These pro ections are preferably so formed as to position the casing eccentrically with respect to the heating member. The adjacent edges of the casing 2 are preferably inturned to provide flanges 5 adapted to extend substantially radially to a heating member when in position thereon and abut there against through substantially the entire lengthof t e casing. In this manner there is provided a heating chamber between the casing and the exterior wall of the heating member, its lower end to permit the required air to readily pass thereinto.

Formed in the casing adjacent the upper end thereof is an opening 6 adapted to receive the projection 7 on a casting 8. This casting is held in position within the casing by a screw 9 at its upper end and by a second screw 10' at its lower end.' The screw 10 preferably passes loosely through a suitable opening in the casing and is then threaded through an opening in the casting. By reason of this construction it is possible after the casing is in position on a heating member to loosen the lock nut ,11 and turn the screw 10 inwardly into engagement with the heating member. This in turn also draws the flanges 5 tightlyinto engagement with said member..

For initially clamping the casing'in approximate position, there may be rovided a strap 12 having at one end a 00k 13 adapted to slip under a struck-out portion 14 in the casing 2. The free end of'the strap is then passed under a second struck- .out portion 15, theedges of the casing are drawn together and the strap is bent backwardly upon itself. It will be apparent that this strap provides means for easily clam ing the casing in position and holding t e same while it is "drawniuto final position by the screw 10.

T 'projection 7 on 'the castin g8 has an openi ng 16 therethrough adapted toreceive" an air-conducting pipe '17 leading-to the air intake .18. of a carburetor of an well known construction. For limiting t e extent to which the pipe 17 may enter the projection, the casting may be provided with which casing is preferably open at I 1. As an article of manufacture, a hot air stove for carburetors, comprising a casing stove for carburetors, comprising a one piece" adapted to be bent around heating members of different diameters, said casing having a flexible end wall adapted to seal one end thereof irrespective of the diameter of the heating members, substantially as described.

2. As an article of manufacture, a'hot air flexible and deformable casing adapted to be bent at will around a heating member within the capacity of the stove irrespective of the diameter of such heating member, and to occupy a predetermined spaced relation )thereto irrespective of such diameter, and

means for maintaining the same in eccentric relation to said member, said stove having a heated air off-take adjacent the point of maximum spacing of said casing from the heating means, substantially as. described.

3. As an article of manufacture a hot air. stove for carburetors, comprising a flexible casing ada ted to be bent around heating members 0 different diameters, said casinghaving at least one end wall freely extensible circumferentially fectively cooperate w th a. heating member irrespective of the diameter ofthe heating member towhich the casing is applied to' I effectively close one end thereof against air inflow, and means for holding the casing in position on a heating member, substantially as described.

4. As an article of manufacture, a flexible casing adapted to cooperate with a heating member and to supply heated air to a carburetor, said casing having inturned edges adapted to abut the surface of. the heating member throughout substantially the entire length of the casing, means for drawing said ed es toward each other, and means for tig tening the casing on the heating members, substantially as described.

5. As an article of manufacture, afiexible casing adapted to cooperate with a heating member and supply heatedair .to' a car buretor, said casing having inturned ed es adapted to abut the surface of the heating member throughout substantially theentirelength of the casing, and having inturned overlapping projections at one end cooperatin with the periphery of the heating mem r, substantially vas described.

and adapted to ef-.

answer 6.. As an article of manufacture, a flexible member and supply heated air to a carburetor, said casing having inturned edges adapted to abut'the surface of the heating member throughout substantially the entire length of the casing, and having inturned projections at one end cooperating with the periphery of the heating member, said projections being formed to maintain the easing in eccentric relationship to the heating member, and effectively close one end thereof, substantially as described.

7. As an article of manufacture, a hot air stove for carburetors, comprising a flexible casing adapted to be bent around a heating member, said casing having at one'end inwardly extending overlapping projections forming a circumferentially extensible end wall closure adapted to engage the periphery of the heating member, substantially as described.

8. As an article of manufacture, a hot airstove for carburetors, comprising a flexible casing adapted to-be bent around a heating .member, said casing having at one end inmember, means for holding the casing tight-' ly in engagement with said member, and separate means for adjusting the casing ,rel-' atively to the heating member, substantially as described.

10. As an article of manufacture, a flexible casing adapted to be bent around an exhaust pipe saidcasing having edge flanges adapted but such pipe throughout substantially the entire length of the casing, inwardly projecting casing or engagement with the periphery of such pipe, aabendable strap for holding said casing in osition, and removable means in the cas ng or connection with the air in-' take of a carburetor, substantially as do? scribed.

ortions formed on one end of said 11. As an article of manufacture, a flexible P casing adjustable to conform to exhaust pipes of different diameters, inturned edges on two sides of said casing adapted to abut against an exhaust pipe and both effectively close the casing with respect thereto and space the'same therefrom, a circumferentially. extens1ble endwall on one end of said casing, means for securing said casing in its . posit on and preventing separation o edges, and means for tightening the casing inposition, substantially as described. 12. As an article of manufacture, a flexible casing adjustable "to conform to exhaust pipes of different diameters, inturned edges on two sides of said casing adapted to abut against an exhaust pipe and both efi'ectively c ose the casing wlth respect thereto and spaoe the same therefrom, a circumferentialwall, substantially as described.

13. As an article of manufacture, a flexible casing adjustable to conform to exhaust pipes of difi'erent diameters, inturned edges on two sides of said casing-adapted to abut against an exhaust pipe and both effectively close the casing with respect thereto and space the same therefrom, and a flexible end wall on said casing adapted to effectively close one end thereof irrespective of the diameter of the exhaust pipe to which the casing is applied, said end wall comprising a plurality of overlapping projections, substantially as described.

14. As an article of manufacture, a flexible casing adjustable to conform to exhaust pipes of different diameters, inturnededges on two sides of said casing adapted to abut against an exhaust pipe and both eflectively close the casing with respect thereto and space the same therefrom, and a flexible end wall on said casing adapted to eflectively close one end thereof irrespective of the diameter of the exhaust pipe to which the casing is applied, said end wall comprising a plurality of overlapping projections of gradually increasing length from each side of the casin toward the center, substantially as described. I Y

In testimony whereof I have hereunto set my hand.

HENRI DE BOISGHEVALIER,

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