US2010621A - Feed regulator - Google Patents

Description

Aug. 6, 1935- w, E. BASSETT ET AL 2,010,621

FE ED REGULAT 0R Filed NOV. 20, 1953 w". Z. Y 7 2 .9 .9 f/ M zz 70 I] 5 In a H 3 ll 1! Z 5 I l\ 20 X Z2 ii l 20 3511 55:

Patented Aug. 6, 1935 fjl omrso STATES PATENT oFFlcE supply offuel to as long as themain FEED REGULATOR '1 Willard E. Bassett and Bert L. Bassett,

, Detroit, Mich.

Application November 20, 1933, Serial No. 698,903 I 1 Claim. (o1. ,103 2ss) The object of this invention is to provide means for'controlling the flow of fuel to the carbureter [of an internal combustion engine so that flooding of thecarbureter will not be apt to occur and a the carbureterwill be assured supply tank. contains some fuel. The invention isillustrated in the accompanying drawing and consists .in certain novel features which will be hereinafter first fully described and then more particularly, defined in the appended'claimr v r 1 1 In the drawing,

Figure 1 is a vertical section of an apparatus embodying the invention.

Figure 2 is an end elevation of the same,

Figure 3 is a plan view, partly in section, on the line 3-3 of Figure 1.

In carrying out the present invention, there is provided a pair of cylinders which are connected at their lower ends with the inlet of the carbureter and at their upper ends are connected with the intake manifold of the engine and with the main supply tank. The cylinders consist of openended bodies I of suitable material having their ends fitted in annular grooves in a top plate 2 and a bottom plate 3, bolts 4 being disposed through the margins of the top and bottom plates and secured by suitable nuts, as will be understood. The bottom plate 3 has ports 5 formed therethrough on the axes of the respective cylinders, and to the underside of the bottom plate is firmly secured a reservoir 6 from which a pipe I leads to the inlet of the carbureter. The top plate 2 has ports 8 formed therethrough on the axes of the respective cylinders and these ports may be formed in the ends of suction pipes 9, the ends of which are threaded into the openings in the top plate, as will be understood upon reference to Figure 1 of the drawing. The top plate is further provided with openings, in one of which is secured an air vent nozzle or pipe In for each cylinder and the end of a fuel supply pipe I I which leads from the main fuel tank.

A disk valve I2 is provided to seat in each port 5 in the bottom plate and from said valves depend stems I3 which are pivoted at their lower extremities to opposite ends of a rocking arm.

I4 which is disposed within the reservoir 6 and is fulcrumed midway its ends upon a lug or bracket; I5 provided on the bottom plate 3, as clearly shown in Figure 1. An upper stem I6 rises from each valve I2 .and plays in a socket I! in the lower end of a. needle valve rod I8 which is disposed on the axis of the respective cylinder and has its upper end tapered to enments, th

, reter.

valve seat 8. The lower end I8 is provided with an annular age in the port or ofthe valve rod rod is a similar flange 20, a float 2| being mounted loosely upon the rod between the two flanges, as 5 clearly shown. A guide bracket 22 is preferably provided in the upper end of the cylinder to encircle the upper end of the valve rod so as to hold the same to a rectilinear path in its movee stem I6 cooperating with the bracket 10 to this end.

The construction and arrangement of the several parts of the apparatus having been thus made known, it is thought the operation of the same will be readily understood. Initially, one 5 of the cylinders I will be filled with fuel and the float 2| in said cylinder will automatically rise with the level of the fuel until it impinges against the flange 20 whereupon it will act to lift the rod I8 and cause its upper end to seat in the 20 port 8 thereby cutting off the suction and further inflow of fuel. The float in the companion cylinder will, of course, be at the lower limit of its movement resting upon the flange I9 and the weight of the float will hold the rod I 8 lowered 25 and bearing against the valve Itv so that the valve will be seated in the port 5. The valve in the filled cylinder will, of course, be raised inasmuch as the rocking arm or walking beam I4 rises at one end as it descends end .and the parts will thus be set in the positions shown in Figure 1 in which flow is established from the righthand cylinder to the carbu- As the, motor operates, suction will be set up through the intake manifold and the suction 5 pipe 9 so that a fresh supply of fuel will be drawn in through the supply pipe I I to the empty cylinder in which the rod I8 is in its lowered position. Therefore, as the fuel is drawn from one cylinder the other cylinder will be filling and the float 2|, 0 in the latter cylinder, will be rising toward the flange 20. The inflow in one cylinder will con tinue until the outflow in the other cylinder has brought the float in the latter cylinder to rat upon the flange I 9, whereupon the weight of the 45 float will cause the rod I8 and the valve I2 to drop so that further flow from the active cylinder will be cut off and the needle valve rod I8 will be unseated so that suction will then occur through the suction pipe 9. When the valve 50 I2, in the one cylinder, seats to cut off the flow therefrom, the valve l2 in the other cylinder will, of course, beraised and it will continue in at the opposite 30 mg of thevalves other causes, there is provided a tensioning de- 2 been brought down to rest thereon by the diminishing supply of fuel. The air vent l provides an escape for air which would otherwise be trapped in the cylinder so that a full supply of fuel may be permitted to enter the cylinder at each operation.

The flow to the carbureter will be due to gravity and the suction through the carbureter and will be free from those intermittent disturbances which are due to possible surging and eddying vice preferably in the form 'of a spring clip 23 having inwardly directed resilient attaching fingers 241 which fit into suitable sockets in the lug or bracket 15. The bottom of the clip is spaced from the lug l5 and is formed with a depending v'eshaped projection 25 which bears against the rocking arm l4 at the pivot thereof, as best shown in Figure l of the drawing. The device is exceedingly simple in the construction and arrangement of its parts and is not apt to get out of order. The cost of maintenance is, therefore, very slight and the device will operate automatically and efficiently at all times.

Having thus described the invention, we claim:

In a feed regulator, a pair of receptacles each having an outlet opening in its bottom and an inlet .at its top, a container under said receptacles communicating with the receptacles through the openings, valves for closing said outlet openings having stems extending vertically in said container and through the outlet openings into said receptacles, floats in said receptacles directly 'over said valves for alternately acting upon the valves to close one valve while the other opens, a rocker arm in said container extending between and pivoted to the stems of said valves, a bearing bracket in said container located over said arm and pivoted to the arm intermediate the length thereof to mount the arm for rocking movement, a tooth rising from said arm over its pivot, a lug over said tooth formed with notches in opposite side faces, and a U-shaped spring clip having its arms engaged in the notches of said lug and its bridge portion extending under the'lug over said tooth and formed with a depending spur engaging the tooth to yieldably re;- sist rocking of the arm.

WILLARD E. BASSETT. n. 5.1 BERT L. BASSETT. [1... s.)

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