US1091521A - Temperature-controller for carbureters. - Google Patents

Description

APPLICATION IILED JULY 5, 1911.

Patented Mar. 31, 1914 wine 6666.

T 0FFIE JAMES B. LUND, OF CHICAGO, ILLINOIS.

TEMPERATURE-CONTROLLER FOR CABBURETEBS.

Specification of Letters Patent.

Patented. Mar. 31, 1914..

Application filed July 5, 1911. Serial No. 636,838.

To all whom it may concern Be it known that 1, JAMES B. LUND, a citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Temperature- Controllers for Carbureters, of which the following is a specification.

This invention relates in general to carbureters and more particularly to an attachment therefor adapted to automatically control the temperature of the air delivered to the carbureter whereby a complete and efiicient vaporization of the gasolene is effected.

One of the objects of my present invention is the provision ofa device of this character having two air intakes for the carbureter, one of said intakes communicating directly with the atmosphere for supplying cool air and the other, communicating with an air heater bymeans of which the air drawn into the carbureter, is heated considerably above atmospheric temperature, and to provide temperature controlled mechanism for automatically regulating the relative amounts of cool and hot air delivered to the carbureter so that the air which is finally delivered to the carbureter is of a uniform predetermined temperature.

This invention relates only to temperature controlled mechanism for regulating the relative amounts of hot and cold air delivered to the carbureter. Mechanism for this purpose, adapted to be controlled by both temperature and pressure, constitutes the subject-matter of U. S. Patent No. 1,017 ,572, granted to me February 13, 1912, on an application copending herewith.

My invention will be best understood by reference to the following description when taken in connection with the accompanying drawings illustrating those forms of my invention which at present seem preferable.

Referring to the drawings Figure 1 is a side elevation partially in section of a carbureter equipped with my invention; Fig. 2 is a plan view of my improved air heating device; and Fig. 3 is a sectional view taken on the line 33 of Fig. 2.

Referring to the drawings 10 designates a carbureter which may be of any well known or preferred type, the particular form or character of the carbureter employed being immaterial so far as the present invention is concerned. The air is delivered to the carburetor through an air supply pipe 11 which is connected at its intake end with a heater 12. This heater as shown in Figs. 2 and 3 comprises a section of pipe 13 1nterposed in the exhaust pipe 14 from the engine and having a drum 15 surrounding the section and connected therewith by a plurality of ribs or partitions 16. The drum and the compartments formed by the partitions are open at the ends and, as will be evident from Fig. 2, the partitions do not extend from end to end of the drum but are cut away at their central portion to leave a circular chamber surrounding the pipe 13 and communicating with the air supply pipe 11. It will be manifest that the air which is drawn into the heater around the hot exhaust pipe will be heated to a relatively high temperature before it is delivered to the carbureter through the supply pipe 11.

The supply pipe 11 is preferably square throughout a portion of its len th and this square portion is provided wit a port 17 communicating directly with the atmosphere. Adjacent this ort there is pivoted at 18 a shutter 19 which raised position to close the port and when in lowered position to close the pipe 11 between the port and the heater. When the shutter is partially opened it will be evident the air will be drawn into the carbureter both directly from the atmosphere through the port 17 and also through the heater 12. By regulating the posit-ion of the shutter the proper proportions of air will be admitted through the port 17 and through the heater to produce a mixture of air of the proper pro-determined temperature which will give the most satisfactory results in the carbureter.

As shown in Fig. 1 the pipe leading from the carbureter to the manifold 20 which delivers the gas to the engine cylinders is enlarged as indicated at 21 between the throttle valve (not shown) and the manifold and' in this enlarged portion there is mounted an element 22 of any preferred type or construction adaptedto expand and contract under changes in temperature. Any well known or approved element may be employed in this connection, but in the present instance I have illustrated a thermostat designed to respond readily to changes in temis adapted when in ment and the shutter.

perature so that the temperature of the gas delivered to the engine will be substantially uniform. From the side of the enlarged section of pipe 21 projects a bearing 23 in which is slidingly mounted a link or rod 24 connected at its inner end to the element 22 and at its outer end to one arm of a bell crank lever 25 pivotally mounted.- upon a suitable The other arm of the bracket 26. lever 25 is connected by a link 27 Stationary bell crank with the shutter 19. The rod 2a is preferdotted line position shown in Fig. 1 to shut off the supply of heated air drawn in through the heater 12 and to permit air to be drawn into the carbureter directly from the atmosphere through the port 17, this atmospheric air being, of course, cooler than the air drawn through the heater. When the cooler air strikes the element it willcorrespondingly contract and the shutter 19 will be partially raised and this adjustment of the shutter by the element will be continued until the proper mixture of air of the predetermined temperature has been reached.

While I have shown and described in detail the embodiments of my invention which appear, at the present time, to be most desirable, it will be apparent that various changes in the shape, construction and arrangement of the various parts may be resorted to Without departing from the spirit or sacrificing any of the material advantages of the invention.

I claim:

The combination of a carbureter, a pipe for supplying air thereto, a pipe connecte With said carbureter for conveying carbureted air from the carbureter to an engine cylinder, means including a shutter ar ranged in the air supply pipe to the carbureter for regulating the relative proportions of hot and cold air supplied to the carbureter through said pipe, temperature actuated means located in the carbureted air pipe, and. connections including a bell crank lever and suitable links between the temperature actuated means and said shutter whereby the shutter is controlled from said temperature actuated means to regulate the temperature of the air delivered to the carbureter.

JAMES B. LUND.

Witnesses: v

IRA J. WILSON, M. ROBERTSON.

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