US1158589A - Carbureter. - Google Patents

Description

J..L.T.THUR0T. CARBURETER. APPLICATION FILED DEC-19.19l3.

Patented Nov. 2, 1915.

2 SHEETS-SHEET l- HA ii J. L. T. THUROT.

CARBURETER.

APPLICATION FILED DEC. 19. 1913.

2 SHEETS-SHEET 2- Patented Nov. 2, 1915.

JEAN Louis THOMAS TnUEor; or PARIS; FRANCE, nssIeNoE T0 socn'irn DES CARBURATEURS rnuno'r (THUno'r, MEYER & cm), 0F PARIS, FRANCE.

- CAIRBURETER.

asses.

Specification of Letters Patent.

Patented m. a, rats.

Application filed December 19, 1913. Serial No. 807,677.

THURo'r, a citizen of the Republic of France, and residentof Paris, France, have invented a new and useful Carburetor, which carbu:

reter is fully set forth inthe following speci- This invention relates to a carburetor in which the manipulation of a handle operating a plug to open or close air inlet openings communicating with jets or sprayers, one of which is below the constant level of the liquid fuel and is consequently flooded, enables the supplyof gaseous mixture to be regulated in proportion to the running of the engine.

The invention further relates to a construction of the carbureter in which, while the system of sprayers and the plug are retained, the arrangement and the method of securing the sprayers relatively to the carbureter, have been modified for the purpose of simplification.

In order to make the following explanation as clear as possible, the accompanying drawings show by way of example, a carbureter according to this invention.

Figure 1 is a vertical section on line A A of Fig. 2, Fig. 2 is a plan View, Fig. 3 is a vertical section on line B]B of Fig. 2.

The constant-level fuel tank a, (Figs. 1,

2 and 3), which, incidentally, presents no special features, communicates by means of a conduit 1 and a collector 2, with three branches 3, 3' and 3 terminating in sprayers or jets 4, 4; and 4", occupying the centers of orifices 5, 5 and 5 in'the'casing Z) of the carburetor. Owing to its 'low position' the sprayer 4 is flooded, the liquid fuel reaching its level in a cup 8. lhe casing b is provided with a main air passage 7 corresponding to the orifice 5', and with two other air passages 8 and 9 corresponding respectively to the orifices 5 and 5" and opening into the main passage 7 behind the plug 10, the passage 8 being constantly open. The plug 10 is formed with a central butterfly ll which controls the main passage 7, and with an end passage 9 which is designed to establish communication between the saidpassage 7 and the passage 9, as shown in Fig. 1. The plug 10 is operated by means of an exteriorly-located handle 12. The passage 9 is made in a bell l3 surrounding the cup 6, and the position of the said bell can be modified by screwing or unscrewing it, so as to regulate the quantity of air admitted. 1

For running at slow speed, the plug 10 is turned by'means of the handle ,12 into the position shown in Fig. 3, in which the butterflyll completely closes the passage 7, and the port 9 does not coincide with the passage 9. Under these conditions, the ga-seous mixture which is drawn into the engine by the suction exerted through the passages 7 and 8, is formed only'by the air passing through the restricted orifice 5 and carbu-- lib reted on contact with the liquid fuel disder the suction action of the engine, passes.

under the bell l3 and between the walls of the said bell and those of the cup 6 in order to be carbureted in passing through the liquid occupying said cup. For running at normal speed, the plug 10 is turned so that the butterfly 11 uncovers the passage 7, and the sprayer t supplies fuel so as to camera the air drawn through the maximum orifice 5'.

j I claim-- 7 1. In a carbureter for internal-combustlon engines, the combination, with a casing having a main air-supply passage,;and a pair of auxiliary air-supply passages located atopposite sides of and communicating with said main passage, one of said auxiliary passages being constantly open, of aseries of three sprayers projecting into said passages; a constant-level fuel-supply tank in communication with said sprayers, one of the sprayers being located below the level of the'said' pfnel; and a plug valve rotatably mounted in said casing and provided with an end port controlling the other'auxiliary passage and with a central butterfly controlling said main passage, the arrangement being such that the first named auxiliary passage is are engines, the combination, with a casing having a main air-supply passage, and a pair of auxiliary air supply passages located at opposite sides of and communicating with said main passage, one of said passages being constantly open, of means for spraying liquid fuel into said passages for admixture with the air admitted thereinto'; and a plug Valve rotatably mounted in, said casing and provided Withan end port and with a-central butterfly controlling the other auxiliary passage and the main passage, respectively, the arrangement being such that the firstnamed'auxiliary passage is open during running of the engine at slow speed, the 15 other auxiliary passage port opening for higher speed, and the butterfly opening for normal speed.

In testimony whereof I have signed this specification in the presence of two sub- 20 scribing witnesses.

JEAN LOUIS THOMAS THUROT.

Witnesses:

EMILE LEDRET, HANSON C. CoxE.

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