US2280042A

US2280042A - Fluid coupling

Info

Publication number: US2280042A
Application number: US290563A
Authority: US
Inventors: William A Duffield
Original assignee: AMADOR BOTELLO
Current assignee: AMADOR BOTELLO
Priority date: 1939-08-17
Filing date: 1939-08-17
Publication date: 1942-04-14
Anticipated expiration: 1959-04-14

Description

April 14,1942. 1 w. A. DUFFIELD 2,230,042

r FLUID COUPLING Filed Aug. 17; 1959 Patented Apr. 14, 1942" UNITED STATES" PATENT OFFICE FLUID COUPLING William A. Duflield, Windsor, Ontario, Canada,

assignor, by mesne assignments, to Amador Botello, New York, N. Y. 1

Application August 17, 1939, Serial No. 290,563 v 3' Claims. (01. 60-54) This invention relates to improvements to fluid couplings and particularly to the type covered by my United States Patent No. 2,156,040, dated April 25, 1939. i

In that patent means were provided whereby the fluid 'could be evacuated fromthe' working circuit of the coupling and'returned thereto.

This consisted'of an impeller member'of the fluid coupling, having a reservoir around the shaft on which it was journalled, with a by-pass passage from the reservoir opening directly into the runner member atits outer edge. This construction provided for the evacuation of fluid from the working circuit into the reservoir when the speed of rotation of the runner member exceeded that of the impeller member; andthe return of the fluid to the working circuit when the speed of rotation of the impeller exceeded that of the runner member.

The present invention provides means whereby the return of the fluid from the reservoir to the working circuit can be controlled regulated and adjusted.

By this means, the runner member after the evacuation of the fluid from the working circuit permits it to over-run the impeller member, and

will continue to over-run that member, until the latter reaches a certain speed of rotation, ad- .justed by the novel regulator means.

Reference is made to the accompanying drawing in which a t Figure 1 is a vertical cross section of the fluid coupling.

Figure 2 is a cross section on the lines 22 of Figure 1. I

I As shown in Figure 1, the impeller member 3| as the by-pass passage 52 having an opening 53 to the outer portion of the runner member 4 and leading to the outlet 54 in the inner or central portion of the reservoir 5. This reservoir 5 extends outwardly and has a series of centrifugal spring-controlled ball valves 60 at its periphery openinginto the by-pass passage 5| to provide. outlets from the reservoir to permit the return of the fluid into the working circuit. The ball valves 60 are adjusted by the screw'plugs'G3 whereby the tension of, the spring 62 can be impeller 3 is sufiicient to open the-ball valves 60 the fluid will begin to flow back into the working circuit-9 of the runner 4.

, the reservoir, a predetermined speed is required varied. 'When the centrifugal force of the fluid' in the reservoir due to the speed of rotation of the passage into the reservoir.

fly-wheel I 0. The flange 40 of the runner 4 is bolted to the flange 20 of the driven shaft 2 which is journalled at its end in the bearing H in the fly-wheel Ill and also in the bearing 1 in the inner portion of the impeller 3. i Y

The impeller member 3 is shown in two castings for constructional purposes. shell 30 with its vanes 35 and core 34 has an outer shell 3| forming the reservoir 5, and a flange 36. Over and around this casting is the shell 32 extending from the extension 33 to the inner end of the reservoir 5 where it is bolted to the flange 36. The sleeve 8 is also bolted to' plug 63. .Between the flanges 40 and 36 of the impeller and runner an inner reservoir 50 is provided, with passages 5| from the main reservoir.

Air tubes 43 from the cores 41 to the inner reservoir 50 are also provided.

With a construction of this type, when the speed of rotation ofthe driven shaft and runner exceeds that of the impeller, the fluid in the working circuit will flow through the by-pas's As the working circuit becomes depleted the runner over-runs the impeller freely. In order to return the fluid to the working circuit and couple the impeller and runner, the drive shaft must be speeded up. But by means of the controlled outlet valves from to open these valves. The runner will therefore continue to over-run the impeller until after this speed is reached. The result is valuable and important when the coupling is combined with transmission mechanism.

It is also of value and importance in prevent- The impeller ing creeping of the fluid from the reservoir to the working circuit when the coupling is rotating at idling speed.

What I claim is: 1. In a fluid coupling of the type specified, a

,drive shaft, a fly-wheel bolted thereto, a driven shaft having its end journaled inthe fly-wheel, an impeller member bolted to the fly-wheel and journalled on the driven shaft, a runner member having core and vanes, bolted to a flange on the driven shaft, the impeller member comprising an inner shell having a core and vanes, an' outer shell forming a reservoir, and a by-pass passage from within the runner member and about the reservoir to its inner end, the outer end of the reservoir having a series of adjustable outlet valves opening into the by-pass passage.

2. In a fluid coupling of the type specified, a drive shaft, a fly-wheel bolted thereto, a driven shaft having its end Joumalled in the fly-wheel, an impeller member bolted to the fly-wheel and journalled on the driven shaft, a runner member having core and vanes bolted to a flange on the driven shaft, the impeller member comprising an inner shell having a core' and vanes, an outer shell forming a reservoir, and a by-pass passage from within the runner member and about the reservoir to its inner end, the outer end of the reservoir having a series of adjustable outlet valves opening into the by-pass passage, and an inner reservoir around the driven shaft and inside the impeller and runner members with passages from the reservoir to the inner reservoir.

3. In a fluid coupling of the type specified, a drive shaft, a fly-wheel bolted thereto, a driven shaft having its end joumalled in the fly-wheel, an impeller member bolted to the fly-wheel and journalled on the driven shaft, a runner member having core and vanes bolted to a flange on the driven shaft, the impeller member comprising an inner shell having a core and vanes, an outer shell forming a reservoir, and a by-pass passage from within the runner member and about the reservoir to its inner end, the outer end of the reservoir having a series of adjustable outlet valves opening into the by-pass passages, and an inner reservoir around the driven shaft and inside the impeller and runner members with passages from the reservoir to the inner reservoir, and air tubes from the core to the inner reservoir.

WILLIAM A. DUFFIELD.