US1266900A - Means to supply heated air to carbureters. - Google Patents

Description

V. P. ALEXANUth.

MEANS T0 SUPPLY HEATED AIR TO CARBURETERS.

APPLICATION FILED SEPT. 2;. me.

1Q26,00. Patentediwm ze wls.

' My'gz wwzdw v VERNE 1?, ALEZFL'AZQ'DER, OF CHICAGO, ILLINOIS, AEiSIG-NOR TO WILLIAM G. WILIVIOT, OF

' CHICAGO, ILHIQUIS.

MEANS '10 SUPPLY .I-IEA'EEI) A13; TU CBURETERS" Specification of Letters Patent.

Patented May an the,

Application filed September 21, 191a Serial No. 128L363.

- of the invention are to impart to the simler and less ex ensive forms of carburetors P l .a higher efiiciencyand greater economy of fuel; to provide this insuch'a simple and comparatively inexpensive form that the improvement is operable by a comparatively unskilled user; to provide my improvement I in a part or section of. the, standardized mechanism which is not only simply, buteasily accessible;and-removable by one not skilled in this particular art, and to avoid any change of parts,;reconstruction, or alteration of standardized parts beyond the mere substitution of a partembodying my improvementfor one apparently substantially similar that is removed from exlsting and well known construction.

With the above objects in view my invention consists-in the novel carbureter attachment, its construction, arrangement and combination of parts, hereinafter described in detail, illustrated in the accompanying drawing and particularly pointed out in the appended claims.

In the--drawing- Figural is a side elevation of an auto mobile engine of a universally known construction, its carbureter and the air and explosive mixture pipes leading thereinto an therefrom to the engine cylinders.

' "-Fig. 2 is a, vertical section through a well known and, perhaps, most commonly used form of simple carbureter and itsinlet, or

hot air, pipe constructed and equipped in accordance with my invention, together witha short broken away section of the carbureter outlet or manifold pipe.

Fig. 3 is a section taken substantially on the l1ne'X-X of Fig. 2. Fig. {l is a section taken on the line Y Y of Fig. 2.

. In the several views 2 represents the inlet hub or branch and 3 the outlet hub or branch of the carburetor, the generahdetails of passage 6. that is, like 4 the top and. has an 1, in the conventional manner to the well known engine thereinshown. The body of the inlet, or hot air pipe5attached to the carburetor branch 2 is, as shown, ort' the usual and Well'known-form. To this body, which I make, preferably, of alumi-.

num I cast an auxiliary conduit, bypass, or the conduit 5, open at outlet end 7, which is always open to the carbureters interior. In the usually likewise free and always open conduit 5 I interpose in the elbow bend of ranged in a circle as shown in Fig. 3. These openings are controlled by meansof a disk or puppet valve 10 that is normally held closed'by a spiral compression spring 11 which isarranged to bear against the disk or valve 10 and against a head 12 on a bolt -its outlet end a wall 8 with openings 9 aror stem 13 on which the valve 10 is slidable i and which is provided with a threadedend 14 that is screw-threaded into a recessed and threaded hub 15 in the center of the wall 8. As shown the air capacity of the passage 6 is less than that of the usual pipe 5. daid passage 6 is proportioned to take care ofthe low speed or engine starting air requirements and to .be aided by a flow ofair thlQliligll the usual pipe 5 when the suction 1 1s su engine through the admission thereto of moreg as, to cause the valve 10 to overcome the reslstance of the spring 11. The extent ciently increased, by speeding up the of opening movement of the valve 10 will be automatically proportioned by said resistance spring to the carburizing requirements, which provides a uniformity of mixture, or avoids an excess of air through the inlet pipe 5 and the corresponding waste of fuel oil that must be made to correspond with such excess in order to produce a mix ture of ail: and gasolene, or other liquid vapor that may be exploded by the engine spark.

By placing the control valve 10 in the inlet pipe 5, or hot. air pipe, which in these types of engines is'always a readilv removable section, I avoid the complexities in the carbureter itself Which enhance very materially the prices of the more expensive carbureters which are designed to efiebt the higher etiiciencies, automatieair regulation,

'of' the carbureter, together with the admission of the controlled flow of air in the form of a series of spaced apart jets issuing through the holes or perforations 9, also tends to better atomize, divide, or prepare the admitted air for a thorough mixing with the oil vapor admitted into the carbureter.

The length. of the hot air pipe 5'will de- )(Jld upon the relative vpositions of the carbureter and the exhaustpipe 16, th-lip 17 at the inletend of the hot airpipe being so positioned as to cause all the air entering the carbureter .to first pass around this exhaust pipe and be heated therebyfl Having thus described my invention, I

. claimvas new and desire to secure by Letters Patent ,1. The combination with a carbureter ofan internal combustion engine, of an air supply device attached thereto and provided with two passages, one of which isuninterrupted, a valve mounted in th other passage, the intakeends of said passages being from its seat by l adjacent the exhaust pipe of the engine so 40 that the air drawn into the passage may beheated, and a spring mounted in engageing to the exhaust pipe of the engine and provided with two passages, one of which is uninterrupted, a valve mounted m the other passage, and a sprlng mounted in engage- "ment with the valve to hold said second passage closed until the valve is moved from u its seat by the force of the suction of the engine, the inlet end of the air su ply device being so positioned relative to t e exhaust pipe of the engine that the air passing to the carbureter will be heated by sald exhaust 1 e. p The combination with a carbureter of an internal combustion engine provided with a manually operable intake valve and the exhaust pipe of said engine, of a normally closed passage extending from said exhaust pipe to said carbureter, and a spring held valve in said passage adapted to be moved the-suction of the engine and of an 0 en passage alongside the normally close passage and also extending from. the exhaust pipe to the carbureter to constantly conduct heated air thereto while the engine is running.

In testimony whereof I have hereunto signed my name.

VERNE P. ALEXANDER.

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