US1799351A - Signal for choke-control devices and the like - Google Patents

Description

R. H. BELL April 7, 1931.

SIGNAL FOR CHOKE CONTROL DEVICES AND THE LIKE Filed March 11, 1929 h a a n I I n I Patented Apr. 7, 1931 UNlTE Df 'SyT'ATES PATENT; OFFICE RAY H. LL, or DENVERQCOLQBADO, AssIGnoitf'ro nu'rocnoxn SI NAL, 11m, or

, nENv mcoLoRAno, aconronnrron or COLORADO V SIGNAL FOR CHOKE-CONTROL DEVICES AND THE LlIKE Application fi led March 11,

This invention relates to improvements in devices 1 for operating carburetor chokes and the'like andsignals for use therewith.

Automobiles employing internal combustion engines'asthe motive power are provided with carburetors in which the liquid fuel is converted into a fine spray and mixed with air. When the engines are cold, they require a very richmixture for starting, but when they are warmed up, the mixture can be very I lean. It is customary to' adju'st the carbu retors so that they give thebest results when the engine'is hot and therefore, unless some means is provided for enriching the mixture when the engine is started,:it is very difiicult to start the engine;

Carburetors are provlded with means for restricting the .entranceofairwhich means are usually referred to as 'chokers, and asthe choker is located at some distance from the place where the driver sits, it is usually con-* nected to the dash by means which is accessible from the drivers seat and byimeans of which the choker. valve can be. opened and closed. When the choker valve is closed, a very rich mixture is delivered to the engine and although this isdesirable forstarting, it is very detrimental to the engine and to the Eappear as the description proceeds are at-] lubricant if the mixture is retaine'din rich condition for any I considerable length of time. It is customary to provide-choker operating means located on the dash and which, when pulled forwardly, will close the choker valve and retain it in closed position until the means is moved in the reverse direction; It often happens that the driver forgets to. a open the choker valve and that a large amount of gasoline is' sucked intothe engine and abig proportion of this flows downwardly into the crank case and mixes with the'lubricating oil to such an extent'that its lubricating properties are destroyed, with; the result that bearings often become worn outdue to -this dilution. i 3 r It is the object of this invention to produce an improvedmeans for operating the" choke valve of a carburetor which shall be so constructed that it will operate asignal as, for example, a lamp, when .the choker'valve is 1 1929: Serial No 345,953,

closed and which will maintain this signal 1n; operative condition until the choke valveisentirely open.

It is the further objectof this invention to produce a device of this type which shall be so constructed that it can be very easily attached to the dash of an automobile, or to 7 duce a device of'this type having a circuit control means located at the front of the support so that the parts thereof can be made readily accessible and which obviates-all :dan-

er of igniting explosive gases which might 3 so as to illuminatethe interior of the car floor.

The above and other objects which may tained by means of a construction andan arrangement of parts which willnow be described in detail, reference for this pur-. .pose beinghad to the accompanying draw- I ing in which the preferred embodiment of Fig. 1 is a "Fig.2 is a sectionsimilar to that shown in position;

Flg. 3 1s a transverse sectlon taken on l1ne 33, Fig. 1; and

" Fig. 4 is a new partly in section showing a. slightlymodified form of the invention.

'In the drawingreference numeral 1 represents the dash or apart of the instrument board of an automobile, and may, of course represent any suitable support. The sup e'present at therear of the dash and under .neath the engine hood.

port 1 has an opening 2 through which the tubular bearing 3 extends. Member 3 is provided at its front end with external threads 4 with which the nuts 5 and 6 cooperate to hold it in place on member 1. The rear end of member 3 is crimped about the end of a flexible tube 7 as indicated at 8. An ornamental washer or a plate which has been designated by reference numeral 9 is placed between the bottom of nut 6 and the front surface of the support 1 and serves as a washer and also gives the parts a more finished appearance. Nut' 6 is provided with a central recess or opening 10 of somewhat larger diameter than the outside of member 3 for a purpose which will hereinafter appear. Slidably mounted within member 3 is a hollow tube or rod 11 The front end of this rod has a threaded section 12 to which the hollow handle 13 is attached in the manner shown. The rear end of rod 11 is provided with an annular depression 14 which is adapted to be engaged by the inwardly extending projection 15 on member 3. Member 3 is also provided with a longitudinal slot 16 and member 11 has a grommet 17, the outer end of which is'located in the slot 16 and serves to prevent member 11 from rotating within member 3, and also serves as a stop to limit the relative longitudinal movement of these two members. An insulated electrical conductor 18, extends inwardly through the opening in the grommet and has its front end connected with,

the electrical contact 19, which is carried by an insulating bushing 20 located in the front end of member 11. to the rear end of member 11 and extends through the flexible tube 7 to the choke valve or to any other apparatus that isto be operated. The handle 13 is provided with diametrically opposite slots 22, through which the lugs 23 of the yoke-member 24 extends. This yoke member has a central opening 25 through which the central terminal 26 of the lamp projects. The base 27 of the lamp is in electrical contact with yoke member 24 and with the conducting port-ions of the device. A spring 28 is located between the end of tube 11 and the adjacent surface of yoke member 24 and exerts a force thereon tending to move it forwardly within the handle.

inner surface of the lens 30 and is under compression so that it exerts a force tending to move the lamp and the yoke member towards the contact 19. Spring'29 is much stronger than spring 28 and therefore overcomes the latter and normally holds the lugs 23 in engagement with the lower ends of slots 22. The parts are so adjusted that the center terminal 26 of the lamp will contact with the insulated contact 19 before the lugs 33 reach the bottom of slots 22 so that the A wire 21 is attached' Another spring 29 is located be tween the front end of the lamp and the] lamp will not be prevented from coming into electrical contact with the wire 18. When the handle and tube 11 are pulled forwardly to the position shown in Fig. 1, contacts 11 and 26 will be in electrical communication with each other and since the shell 27 of the lamp is grounded to the metal structure of the device, it is evident that current will be flowing through the lamp when the parts are in this position. When the handle and member 11 are moved rearwardly to the position shown in Fig. 2, the lugs 23 will be engaged by the fron'tend of nut 6 and the center terminal of the lamp separated from the insulated contact, thereby breaking the circuit to the lamp, which will therefore become dark. lVhen the parts are in the position shown in Fig. 2, the projection 15 registers with the depression 14 in member 11 and serves as a stop for a friction device which holds the parts in inoperative position. The necessity for this detent arises from the fact that spring 29 exerts a force tending to pull member 11 forwardly and unless the detent is employed, the vibrations of the automobile and the action of spring 29 cooperate to move the lamp terminal 26 into engagement with the insulated contact 19.

In Fig. 4 a slightly modified form of the 9 invention has been illustrated. In this form the lamp has been omitted and the yoke 24 has been modified by the addition of a center contact 26a and the opening 25 has been omitted. The yoke member has been designat'ed by 24a in Fig. 4. WVhen the parts are in the position shown in this figure, the end of conductor 18 is grounded and obviously when the parts are moved back to the position shown in Fig. 2, contacts 19 and 26a willbe separated. These parts now function as a switch and with this modified construction, the signal lamp which has been designated by 270 can be placedat any convenient point and connected in series with the conductor 18 in the manner shown. The cover 31 that encloses the lamp is provided with a slot in its lower surface which corresponds to slot 32 in handle 13. WVhen the lamp is illuminated, light will be projected through the slot onto the floor of the car. The 'device provided with the switch illustrated in Fig. 4, corresponds in every particularto the device shown in Figs. 1 and 2 with the exception of the location of the lamp, andtherefore, isincluded in this invention.

Although this invention has been described in connection with the choke valve of a carburetor, it is evident that it can be employed for many other purposes, as, for example, for controlling the louvers or shutters of a radiator protector, and in fact for any purpose where some mechanism is to be operated at-a distance ,and I therefore do not limit my- 7 self to any particular use of this invention,

In the embodiment illustrated, the outer end of the handle is shown as closed by means of a transparent or translucent lens 30, which is held in place by a ring 33 having a bezel 34 in which the lens sets. This lens may be of any shape desired and may be replaced by solid material having stencilledopenings therein. 7

Attention is again directed to the advantage of having this switch or circuit controlling mechanism located at the front of the support as this makes it possible to inspect the parts and they are also protected against accidental injury and against the effect of dirt and dust more effectively than if they were located at the rear of the support. The fact that nut 6 can be removed from the front end of member 3 greatly simplifies the installation of the device and it also makes it possible to quickly detach the parts if for any reason this should be necessary.

This invention is similar to the one illustrat'ed and claimed in my copending application, Serial No. 331,584, filed January 10, 1929, and as a continuation in part of those features that are common to the two devices.

Having described the invention what is claimed as new is: v

1. A warning signal for a choker operating device for a gasoline carburetor, or the like, comprising, in combination, a hollow rod to operate a choker, a tubular bearing through which the rod extends and with respect to which it is longitudinally movable, an electric conductor extending through the hollow rodvand terminating in an electric contact at the front end thereof, means for insulating the contact fr omvthe rod, a hollow handle secured to the frontend of the rod, a lamp located within the hollow handle and movable longitudinally therein, means comprising a spring for urging the lamp rearwardly and into contact with the insulated contact and means for overcoming the action of the spring and for moving the lamp out of engagement with the insulated contact when the hollow rod is moved to its rearmost position.

through which the rod extends and with respect to which it is longitudinally movable, an. electric conductor extending through the hollow rod and terminating in an electric contact at the front end thereof, means for insulating the contact from the rod, a hollow handle secured to the front end of the rod, a lamp located. within the hollow handle and V movable longitudinally therein, a yoke located in the hollow handle, said yoke having a central opening and two diametrically extending lugs, the handle having two diametrically located slots for the reception of the lugs, aspring located between the yoke and the end of the hollow rod, the lamp having its base provided with a central insulated terminal which extends through the opening in the yoke, a second spring engaging the end of the lamp globe, said last named spring being stronger than the first named spring whereby the latter will be overcome by the former and will move the lamp terminal into contact with the insulated contact when the hollow rod is moved forwardly and means for moving the lamp terminal out of contact with the insulated contact when the hollow rod is moved to its rearmost position.

In testimony whereof I aflix my signature.

' RAY H. BELL.

A warning signal. for a choker operating device for a gasoline carburetor, or the like, comprising, in combination, a hollow rod to operate a choker, a tubular bearing through which the rod extends'and with respect to which it is longitudinally movable, an electric conductor extending through the hollow rod and terminating in an electric contact at the front end thereof, means for insulating the contact from the rod, a hollow handle secured to the front end of the rod, a lamp located within the hollow handle and movable longitudinally therein, means comprising a spring for urging the lamp rearwardly and into contact with the insulated contact, means for overcoming the action of

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