US1848255A - Floatless carburetor - Google Patents

Description

March 8,' 1932. M. KREHER FLOATLESS CARBURETOR- 2 Sheets-Sheet l ,fn vena?. 4mm/(nar- 5 n L l n l llillllll Filed June 20, 1929 Maah 8, 1932. M. KREHER FLoA'rLEss cARBuRETon 2 Sheets-Sheet 2 Filed June 20, 1929 Patented Mar. 8, 1932 MAX KREHEB, F FBEIBERG, GERMANY, ASSIGNOR T0 CURT GERMANY ATENT GFFICEl FLoA'rLEss cAnnURnron Application led June 20, 1929, Serial No.

This invention relates to a floatless carburetor which works without throttle valve. The construction and object of the invention are hereinafter explained.y

An embodiment of the invention is illustrated by way of example in the accompany, ing drawings in which:

Fig. 1 shows a vertical section on line 1-1 of Fig. 2. l

Fig. 2 is atop plan view of the carburetor. Fig. 3 shows a vertical section on line 3-3 of'Fig. 2. p

Fig. 4 shows on a larger scale a detail.

The casing is in three parts and constructed 15 as follows The top part 1 has a flange 2 at its upper end, which serves for connecting to the housing of the engine. In part 1 a shaft 3 with lever 4 is mounted which shaft carries a fing The middle part 6 is screwed to the top part. Between these two parts an annular space 7 -is provided in which a. ring 8 is fitted having a shoulder 9, a lower inclined surface 10 and an upper inclined surface 11. This latter is curved. In a bridge a channel 13 is bored in front of which a benzine chamber 14 is arranged. A socket 15 projects from the bridge 12' and an air channel 16 fitted with an adjusting screw 17 terminates in said socket 15. A hollow boss 18 projects in downward direction, ,the lower portion of which forms a mud pocket 20 and is closed by ak screw 19. In the boss 18 a sleeve 21 is screwed the head of which forms a valve seat 22 and is provided with slots 23. The channel 13 terminates in the boss 18.

The bottom part 24 of the housing is a forechamber for the feed air and is screwed to the middle part 6 by a nut 25.

The fuel valve is described in a former application and is therefore designated as a whole as a mushroom valve 26. The valve needle 27 has a cone 28 and a point 29.

In the drawings the carburetor is shown in ino erative position. The fuel valve is held in t e eXtreme position by the finger'. The closure is effected by the cone 28, whereas the point 29 regulates. The air assage leads beet) tween the mushroom 26 and the ring 8, the

372,468, and in Germany March 16, 1929. l

shoulder 9 causes a strangling in the air passage. The mushroom 26 lifts automatically owing to the suction when it is released by the finger 5 actuated by the turning of the sha-ft 3. The farther the linger is turned back the higher can the valve rise and the greater will Lunwre, or ANNABERG,

be the quantity of suction air. The channel 4 16 is an auxiliary airpassage in the interior of the mushroom.

The benzine passes through the channel 13 vin the boss 18 and maintains the same continually full. Impurities can settle in the mud pocket 20. Owing to the suction the benzine rises into the head 26 and is torn away on the edge of this head by the circulating Suction current and thereby atomized. The bowl 11, to which the mixture first passes, causes an eddying and produces a. very intimate and perfect mixing. The suction current 16 is then introduced if necessary; it unites with the outer suction current through the mushroom 26,

l.I claim z- A lHoatless carburetor, comprising in combination an upper part of a casing, a lowr part of a casing, a fuel feed pipe communieating with said lower casing part a double cone clamped between said upper and said lower casing parts, a mushroom valve in said double cone to control the fuel feed, a shaft in said upper casing part, a finger on said shaft adapted to hold said mushroom valve on said cone, a spring actuated needle valve in said mushroom valve ada ted to regulate the fuel feed, and an auxiliary air ,conduit discharging into the mushroom valve above said needle valve.

In testimony whereof I allix my signature.

MAX KREHER.

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