US1470583A - Spring for choker valves - Google Patents

Description

Oct. 9,1923. 1,47%,583

J. E. MESSENGER SPRING FOR CHOKER VALVES Filed uuly 9, 1923 E i in s, in which v um v a as r a. rear arsr JACK. E. HESEEHGER, F DES MOINES, IOWA.

SEEING FOP. CHUKER "ST AL'Q 'ES.

Application filed July 9, 1923. Serial No. 858,248.

To all whom it may concern:

8e it known I, duos E. MrssnNosn, a'citizen of the Uiiitcd States, and a resident of Des lt loines in the county of Polk l and tato of lows, have invented a certain new and useful Spring'ior Choker Valves, of which the following is a speciheat-ion.

The object of my invention it to prowide a spring oi simple and inexpensive construction ior yieldingly holding open the choker valve of the carburetor on a Ford automobile.

Mor particularly, it is my object to provide such a spring, having its parts so shaped, constructed and arranged that the spring may he installed on a carburetor without the use of screws or other iasteln ing means in such manner as to be held Eli Ford cars, and which will retain its posi so in lace by its own tension.

I tion and. perform its function when assembled on any of such 'carbure'mrs. I

With these and other objects in view, my invention consists in the construction, ar 30 rangement and combination of the various parts or. my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claim, and illustrated in the accompanying drawigure 1 shows a sideelevation of a car buretor equipped with a choker valve spring embodying my invention.

Figure 2 shows a top or plan view of thesarnc.

Figure 3 shows a side elevation oi thespring. Figure 4 shows a rear elevation of the spring. 1 a Figure 5 shows a top or plan view of a portion of carburetor illustrating the I spring partially installed in position.

Figure 6 shows a similar view with the spring completely installed; and 0 .Figure 7 shows a detail, sectional view taken on the line 77 of Figure 6.

In the accompanying drawings, 1 have used the reference numeral 10 to indicate generally the body of a carburetor,- having the float chamber 11 and having the latersage 15 in which is an ordinary butterfly valve 16 shown for instance in dotted lines in Figure 6, having the stem 17 rojecting through the wall of the passage. The valve 16 is the choker valve.

Mounted on the stem 17 outside the pas- Y sage 15 is a hub or the like 18 from which projects an arm 19 for controlling the choker valve.

In different forms and makes of carburetors used on Ford cars, the hub 18 varies substantially in shape and size but in all installations of which I am aware, there is some such hub and there is the choker valve with its stem and an, arm 19 or its equivalent.

In the carburetors as made and originally installed, there is usually provided a spring inside the hub 18, which is connected with the hub and with the frame of the carburetor for yieldingly holding the choker valve open.

These spring frequently become broken and it involves considerable labor and trouble and expense to replace them.

It has been my purpose in making my present-invention to devise a spring of such shape that it could be installed from the outside without disassernblinp the carburetor or parts thereof, and could be readily and quickly mounted on practically any carburetor now used on Ford cars.

For this purpose, I have brovided the spring device shown in the drawings.

The spring, which I have indicated generally" at B comprises a short spiral coil 20, one end of which, as at 21, extends in one direction from the lower part of the coil and the other end of which, as at 22, extends in substantially the opposite direc tion from the coil for a short distance, as illustrated in Figure 5.

The at 21 of the spring terminates in a downward] opening hooked-shaped menr her 23 eaten .ing away from the member :21 at substantiallya right angle thereto and in the opposite direction from the coil 20. as shown in Figures 3, -3 5 and (i for instance.

The end or portion 22 has connected with it a portion 24 extending away from the portion 22 and inclined outwardly therefrom, when the spring is in position tor installation as shown in Figure and terminating in a portion projecting; away from the portion 24: in position substantially parallel. with the extended axis of the portion 22, whereby the portion and the yoke 26, hereinafter mentioned are oil'set from the coil 20 and the portion 22.

Assuming that the spring is viewed in side elev-ationin its position as shown for instance in Figure 7 and in Figure 3, it will be seen that the portion 25 terminates in a C-shaped receiving member or yoke 26 located above the portion 25 and having the contracted neck 27.

The spring B is so constructed that when it is viewed from above in its position shown for instance in Figure 5, the portion 21 is extended normally tangentially away from the coil portion 20 toward the left as shown and also in the direction, such that when the coil 20 is assembled on the hub 18, the portion 21 has to be sprung in a direction for Winding up the coil in order to fit the hook member 23 over tl e arm 19.

In different makes of carburetors used on Ford cars, the distance from the hub 18 to the lug 12 varies. It is also true that the distance or degree of ofi'set between the point where the coil 20 is designed to stand and the point where the yoke 26 is designed to stand varies.

As result of these variations, it follows that there is a variation in ditl'erent carburetors in the total distance between the coil 20 and the yoke 28 when installed.

It thus becomes necessary to provide a standard size of spring, which can be installed on any of the various makes of carburetors under consideration. This is true, because it is desirable that the dealer shall be required to keep on hand only one standard springinstead of ditlcrcntsprings for different carburetors.

The peculiar design ot my spring is such that it will fit any of these makes of carburetors. This result is zuzcomplishcd by the arrangement of the yoke 26 offset from the coil 20.

After the yoke. has been snapped on the portion (l, the spring is sprungto slip the coil 20 over the hub lo to its position shown in Figures 6 and T, and thereafter the hook 23 is sprung over the arm 19.

Thereupon the spring will be held in posi tion by tension and the shape of the spring is such that there is constant tension pressing the coil 20 over the hub 18 toward the yoke 26 ordinarily presses against the lug 12, as illustrated in Figure 6.

The peculiar shape of the portions 22, 24 and 25 of the spring is of considerable importance in adapting the spring for convenient use with different makes of carhuretors in which the distance from the portion C to the wall A may vary and in which the distance from the portion C to the hub 18 may vary.

By having the portions 2:2 and 25 arranged as shown in parallel planes and the inclined portion 24 connectino' them. it will be seen that if the distance oi the portion C and the hub 18 from the wall A varies, the spring may still be installed and will be installed with the yoke 26 frictionally grip-. ping the nipple 13 and with the hook 223 on the arnr19 and with the coil 20 on the hub 18, with the coil 20 under tension pressing it toward the carburetor, regardless of variations in the distance between the hub 18 and the nipple13 and regardless of the distance of ofi'set between the hub 18 and the outer end of the lug 12.

in the actual installation of my improved spring B on the carburetor, the yoke 26 is slipped over the portion of the nipple 13 between the shonlder 11 and the lug 12 from the rear. That portion of the nipple 13 is standard size, larger than the restricted neck 27 and of the size to be snugly received within the yoke 26.

When the yoke 26 issnapped over the portion of the nipple 1-3 just mentioned, which is indicated for instance at C in Figure 6., it will be seen that the yoke 26 will he held against movement to the right or left of its position shown for instance in Figure 5.

The tension of the yoke will prevent its being pulled rearwardly oil the portion C of the nipple 13.

The shoulder 14 and the end of the lug 1:2 prcvcn any movement of the yoke .26

inwardly or outwardly with relation to the carlnnrlor. ll'hcn the. yoke 26 is placed in position on the-portion C, the shape of the spring is such that the coil 20 stands just above the hub 18 and accomplishes its function.

Similarly, if the hub 18 and the lug 12 are closer together 01' further apart in different makes oi carlnu-etors. still the spring having inc normal shape shown for instance in Figures 3 and 5 will always fit, will always have tension pressing the coil 20 toward the wall A, and will always frictionally engage the portions C and the arm 19 under tenslon. r

I performed a large number of experiments and made springs in a great variety of shapes and sizes before I was able to devise one which was readily adapted for use with the various structures of carburetors used on Ford cars.

It will be noted that when the arm 19 is swung forwardly from its position shown for instance in Figure 7, for closing the choker valve, thecoil 20 is tightened and reduced in diameter and that there; is a" tendency to pull the portions 24 and 25 and the yoke 26 rearwardly.

On account of the reduced neck 27, however, I find that the spring will not be pulled from theportion C.

It will be noted that the yoke 26 opens away ir-om the coil and that the portion 25 extends to the forward part of the yoke, I have found this a necessary construction in order to allow for installation on the different carburetors mentioned and to. permit the tree movement of the arm 19 for closing the choker valve. If the yoke were made with its open end toward the coil, I find that the spring, wheninstalled on certain carburetors, tightens up when the arm 19 is moved for closing the valve and prevents the full closing of the valve. 7

It will therefore be seen that I have provided a very simple and inexpensive spring structure which can be used for holding open under tension a choker valve in a variety of makes of carburetors.

It will be noted that I have provided a spring which will'retain its tension and its grip on the parts on which it is assembled regardless of considerable variation of size and arrangement thereof and particularly even though there is variation in'the distance between the hub 18 and the portion 26 from each other and in the relative distances from the wall A.

The spring can be mounted on any of the various makes of carburetors used on Fords without the use of tools and will always remain firmly in place under substantial tension. At the same time, the construction is such that the arm 19 can be operatedfor increasing the tension of the spring without releasing it at either end or from the hub 18. The hub 18 in most instances forms a formed thereon a yoke-shaped comprising a. C reslhent 0011 having one en progectmg tanntially away therefrom and terminating 1n Ehook extendin from said end in the op osite direction mm the coil, the other on of the coil having a portion substantially offset from a tangential line substantially as shown and tcrminat-ipg in a yokeshaped portion with a reduced-neck.

3. A choker valve spring comprising a, resilient coil having one end projecting tangentially away therefrom and terminating in a hook extending from said end in the opposite direction from the coil, the other end. of the coil having a portion substantially ofiset from a.tangent1al line substan-- tially as shown and terminating in a yokeshaped portion with-a reduced neck, and a portion adapted to frictionally engage an intake pipe.

4. A choker valve sprin iesilient coil having one en projecting tangentially away therefrom and terminating in a hook extending from said'end in the opposite direction from the coil,.the' other end of the coil having a portion substantially offset from a tangential'line substan-- tially as shown and terminating in a yokeshaped portion with a reduced neck, opening away from the coil.

comprising a 5. A choker valve spring comprising a resilient cpil having at one end a member for engaging an arm on a valve stem and having at its other end a portion offset from the coil terminating in a yoke-shaped portion opening away from the coil and having a reduced neck with diverging ends.

6. A choker valve sprin comprising a resilient coil having one on projecting tangentially away therefrom and terminating in a hook extending from said end in the opposite direction from the c0il,'the other end of the coil having a portion substantially offset from a tangential line substantially as shown and terminating'in a yoke shaped portion with a reduced neck, 0 enin away from the coil, the yoke being orme between the extreme end of the spring and the coil.

7 A choker valve spring comprising a resilient coil having at one end a member for anchoring the same to an arm on a valve stem, and having at its other end a portion offset from the coil terminating in a yokesha-ped portion, opening in a direction with relation to the coil to exert a thrust away from the coil, said yokershaped portion having a reduced neck.

us i

with relation to the coil to exert a thrust away from the coil, said anchoring member and said yoke-shaped portion being arranged 10 in different horizontal planes.

Des Moines, Iowa, April 18, 1923.

JACK E. MESSENGER.

Images