US2618251A

US2618251A - Stove for automatic chokes

Info

Publication number: US2618251A
Application number: US181062A
Authority: US
Inventors: Henry A Boller
Original assignee: Carter Carburetor Corp
Current assignee: Carter Carburetor Corp
Priority date: 1950-08-23
Filing date: 1950-08-23
Publication date: 1952-11-18
Anticipated expiration: 1969-11-18

Description

Nov. 18, 1952 H. A. BOLLER 2,618,251

STOVE FOR AUTOMATIC CHOKES Filed Aug. 23, 1950 INVENTOR. I HENRY A. BOLLER ATTORNEY Patented Nov. 18, 1952 STOVE FOR AUTOMATIC CHOKES Henry A. Boller, Pontiac, Mich assignor to Carter Carburetor Corporation, St. Louis, Mo., a corporation of Delaware Application August 23, 1950, Serial No. 181,062

3 Claims.

This invention relates to heating devices for use in connection with thermostatic controls such. for instance, as automatic choke controls for internal combustion engines.

Where an automatic choke control of the type covered in Coffey Patent No. 2,085,351, for instance, is used with an automotive engine, it is necessary to lead hot air from the vicinity of the engine to the thermostatic control device mounted on the carburetor air horn so that this device may accurately reflect the engine temperature. The positioning and mounting of the stove device present some difficulty, particularly, where the engine and manifolding are not originally designed to accommodate such a part.

Accordingly, it is the main object of the present invention to provide a novel air heating stove of the above type together with means for mountingthe same on the exhaust manifold.

This object and other more detailed objects hereafter appearing are attained by the structure illustrated in the accompanying drawing in which Fig. 1 is a perspective view showing portions of an automotive engine and manifolding systems, portions being broken away for clearer illustration.

Fig. 2 is a side elevation, enlarged, showing one of the exhaust manifold branches with the novel stove mounted thereon.

Fig. 3 is a vertical, transverse, central section through the structure in Fig. 2.

Fig. 4 is a section taken on the inclined line 4--4 of Fig. 3.

The engine in Fig. 1 is of the valve in head type and has a cylinder block 6 with a row of alternating intake and exhaust ports (not shown) along the'front side to which lead branches 1 and 8 of intake manifold 9 and elbow branches I and II of exhaust manifold l2. These manifolds merge centrally in a well-known hot spot construction I3 having a bolting flange M on its upper surface to which is attached a carburetor, generally indicated at [5. The carburetor has an automatic choke control including a thermostat (not shown) mounted in a housing I6 on the side of air horn portion ll of the carburetor barrel. Housing I6 is connected by a hot air tube I8 to a stove l9 mounted on branch I I of exhaust manifold l2.

This stove, as shown in greater detail in the remaining figures, is formed of a generally cupshaped, sheet metal member. The side portions 20 of the member closely hug the side walls of manifold branch II and the middle portion 2! is bowed outwardly to formv a chamber 22 which has a bottom opening 23 for admission of cool air. The heated air is discharged through an opening 24 to which is connected tube I8 leading to the thermostat housing.

The stove also has laterally projecting tangs 25 which rest upon bolting lugs 26 projecting laterally from the exhaust manifold branch. Adjacent pairs of these bolting lugs are secured to the cylinder block by means of a stud bolt 21 and bridging clamp 28, as best shown in Fig. 1. Tangs 25 on the stove are inserted between manifold lugs 26 and these bridging clamps for securing the stove firmly in position.

Thus, this stove may be readily mounted upon a. manifold of the type shown without the necessity of any drilling or tapping thereof and does not in any other Way affect the manifold. The exclusive use of all modifications as come within the scope of the appended claims is contemplated.

I claim:

1. In combination with an internal combustion engine having manifolding with branches disposed side by side and bolting members each clamping a pair of adjacent branches in position, a tube for supplying warm air, and a stove connected to said tube and comprising a member of sheet material laid against one of said branches and forming an air heating chamber therewith, said chamber having substantially greater capacity than a corresponding length of said tube and said member having openings for admission of air to and discharge of the same from said chamber and having tangs underlying said bolting members for securing the member in position.

elbow and bolting lugs for attachment to an engine block, an air heating stove comprising a sheet metal cup applied over said elbow with its side portions closely fitting the same and its center portion bulged outwardly therefrom to form an air chamber, openings in said bowed portion for admission of cool air and for discharge of warm air, and lateral tangs overlying said bolting lugs for attachment therewith to an engine to secure said stove in position.

3. In combination with an internal combustion engine having a thermostatic control, a cylinder block with exhaust and intake ports arranged side by side, manifolding with branches leading to said ports, bolting lugs on said branches, and bolting clamps between pairs of adjacent lugs, an air heating stove comprising 3 4 a sheet metal cup applied inverted to one of said branches with its middle portion spaced FEFERENCES CITED therefrom t form a heating chamber with Open- The foliowing references are of record in the ings for admission of cool air and discharge of file of thls patent:

heated air, and with lateral tangs overlying the 5 UNITED STATES PATENTS bolting lugs on said last-mentioned branch for attachment therewith to the engine, and a hot g l A g air connection between said stove and said ther- 1 Ben i 1924 mostatic control.

HENRY A. BOLLER. 1o