US1235544A - Apparatus for controlling internal-combustion engines. - Google Patents

Description

I. BERRY. APPARATUS FOR CONTROLLING INTERNAL COMBUSTION ENGINES.

APPLICATION FILED OCT-22.19I5. 1,235,544.

Patented Aug. 7, 1917'.

2 SHEETS-SHEET I.

fiwent'or:

J'okn fierr a g Wm J. BERRY APPARATUS FOR CONTROLLING INTERNAL COMBUSTION ENGINES.

Patented Aug. 7, 1917 2 SHEETS-*SHEET 2 N NE 3 APPLICATION FILED OCT-22,1915.

. i p y I Inventor."

E707??? flerr I UNITED STATES PATENT JOHN BERRY, or LLANDUDN'O, WALES.

orrron. .i

APPARATUS FOR CONTROLLING INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

PatentedAug.7,191V.

Application filed October 22, 1915. Serial No. 57,333.

internal combustion engines especially ap plicable. to automobile engines, and the 0bjcct is to facilitate starting, to economize fuel, and to provide for increased power when required. The invention is applicable generally to carbureters, but is especially applicable to the Holley carbureter as' fitted to the well known Ford cars, in connection with which carburetor the invention will, by way of example, be described.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a plan view, Fig.2 a corresponding elevation, Fig. 3 a view, in section on the line III,

III, of Fig. 2, showing the guide pulley and lover. Fig. 4: a view, in section on the line IV, IV, of Fig. 1,-showing the needle valve needle valve spindle of the carbureter. The

.movement to it.

spindle and pulleys, and Fig. 5 a view,

partly in section on the line V, V, of Fig.1.

showing the throttle valve with its spindle and operating lever. 1

Throughout the drawingsthe same parts are indicatedby the same reference characters, and in the case of sections the direction in which they are viewed is indi-' cated by the small arrows placed adjacent to the letters denoting the plane of section.

A is the carbureter which, as stated, is of the well known Holley type. B is the spindle is coned as shown at 6 Fig. 4:, so as to form a valve to control the fuel supply opening, and its position axially determines the extent of opening of the fuel supply port a to which fuel is fed throughthe lateral ports a from the tank a in which the level is maintained uniform by any suitable-and well known device. The-portion 6 of the spindle B is screw-threaded,

andfits a correspondingly screw-threaded part a of the cover of the carbureter, so that rotation of the spindle imparts axial The outer end of the spindle is provided with a hand adjusting tends to rotate the spindle B so as to disk 6 which is secured'nomrotationally to the spindle B.

Between the disk 6 and'the cover. ofthe calrbureter a double pulley G is provided; the upper portion 0 is of larger'diameter than. the lower portion 0 adjustablyufixed on the spindle B by means of a set screw 0 A flexible chain orband 0 passes around the portion 0 of the pulley' C and is anchored thereto by any suit- This pulley is able anchoring attachment 0 one end of the chain 0* is attached to one end, (P, of a spring D, the other end. 65 of which is connected to a bracket 613 the position of which can be adjusted relatively to the fixed part 6Z holes 6Z5 being provided for this purpose. The spring D is so arranged in relation to the pulley and to the hand of the screwthreadedpart 6 that, when stretched, it open the fuel supply port a The other end of the chain 0 is con I nected to the end e jof a spring E the other end 6 of which is connected by a flexible wire or chain 6 to a-lever f on the ignition control rod F of the car, the chain or wire.

6 passing around the guide pulley 0% carried on the two-armed bracket 6 which in turn is secured to any suitable part of. theengine-say the holding brackets e L the driver controls the ignition byadvanc- 13 5 Angular motion impartedto the rod by ing or retarding thespark in anysuitable and well known manner. v

In the arrangement shown in the drawings, it is assumed that in order to advance the spark, the rod Fis rotated in the direction shown by the arrowf Fig. 1.

The spring E is more powerful than the spring D, and it will be seen therefore that when the ignition control rod F is rotated in the direction indicated-by the arrow f the lever f draws the wire 6 over the guide pulley and stretches the spring E, whereupon the spring D yields, and the pulley C, and spindle B turn in the direction indicated by thearrow b to close the port a the tension of the spring and the length. of

.the lever f are usually so arranged that when the ignition rod F has been moved to spark, the rotation imparted to thespindle B causes it to close or. almost close the fuel supply port a When the ignition control rod. F is moved in'the opposite directionto the limit giving the maximum. advance the arrow F, the spring E relaxes, where-- upon the tension of the spring D rotates the pulley G and spindle B- soas to open the fuel supply port a G is the. throttle valve which controls the: supply of carbureted gas to the engine, and on the spindle g of the throttle a lever 99 is fixed; this lever is connected by a rod 9 to a lever k on the throttle control rod H,- the joint. at the end 9 of the rod 9 being a universal or ball joint, and the connection between the other end of the rod 9 and the lever g"- having suflicient play to accommodate the slight lateral movement of the rod. When the throttle control rod H is turned in the direction indicated by the arrow 72, Fig. 1, the: throttle is opened. I

An extension g is fixed by adjustable means to the throttle lever 9 in the arrangement illustrated, g is fixed relatively to g by the screw g this permits angular adjustment of the extension 9 relatively to 9 The movement of g is limited in the one direction by the adjustable screw 9 and the stop 9 A ham a coiled around the smaller diameter 0 of the pulley C and anchored thereto is connected tothe end of the: extension lever 9 The fixed relationship between the extension lever 9 and the throttle lever 9 and the length of the chain 0, are so arranged that when the throttle valve, as it opens, reaches a predetermined point, the chain 0 is pulled taut, whereupon further move ment of the throttle and its lever g imparts angular movement to the pulley G, rotating the spindle B in opposition tothe spring E and opening the fuel supply port a The control rods F and H are usually arranged. alongside parallel with the steering post K of the car, and each is provided with lever under the control of the driver moving over a notched quadrant.

The carburetor is fitted with a bypass and the usual accessory parts, but as these are not material to the present invention,

they are not described herein.

The action of the apparatus is as follows c r The needle valves-pindle B is set so as to give the correct fuelsupply for normal running or for any predetermined speed, and the pulley C is then adjustedon. this spindle so that the springs D" and are approximately in equal tension when the ignition control rod F isin mid position. The pulley Uis then fixed in this position relatively to the spindle B the setscrew 0 In starting the engine, the ignition control rod is turned in a direction opposite to that indicated by the arrow P so as to retard the spark, whereupon the tension in the spring Eiis reduced, and the tension of the spring D rotates the spindle@ so as to increase the efiective opening of the port a whereby the rate of fuel supply is increased, and a rich carbureted mixture provided v After starting, the spark is advanced by rotating the ignition control rod in the direction indicated by the arrow 7, whereupon the opening of the fuel supply port is diminished and the rate of the fuel supply correspondingly decreased.

When extra power is required, the throttle valve is opened beyond the predetermined point at which the chain c is pulled taut by the lever 9 whereupon move-ment of the throttle valve beyond this pointto increase the throttle openingis effective in imparting, through the lever and chain 0 angular movement to the spindle B in such direction as to increase the opening of the fuel supply port a to increase the rate of fuel supply, the spring E being stretched andthe spring D contracted; as the radius of the pulley 0 is. small as comparedwith that of 0 a small movement oithe lever g? imparts comparatively large angular movement to the valve spind le.

For ordinary running the fuel supply valve spindle B- is regulated by the movement of the ignition control rod only when, however, extra power required and the throttle control means are operated to obtain it, the spindle B is operated thereby as described so as to give the required increased supply; the independent operation oi the spindle B- by' the throttle control means is permitted by virtue of the" elastic connection between the spindle- B the ignition control means.- The setting between the' spindle B- and the ignition con trol means is usually such that when the latter is in a position which gives extreme advance sparking, the spindle B cuts off or almost cuts off the fuel supply.-

The invention can, of course, be applied to carbureters other than of the Holley type, the details of construction being modifiecl. accordingly;

Having now fully described my invention, I declare that what I claim and. desire to secure by Letters Patent is:-

1. In a carbureter, in combination; a fuel supply valve elastic meanstending normally to open the fuel supply valve ;I a movable part under the control of the driver; elastic means connecting the said valve with the said? movable adapted when the said part is moved in the one direction, to close the fuel supply valve; a throttlevalve; means connecting the throttle-valve to the said fuel supply valve and adapted when the throttle valve opens beyonda predetermined limit, to open the fuel supply valve substantially as described. 7

2. a carbureter, combination; a fuel supply valve; elastic means tending nor- Inally to open the fuel supply valve; means for controlling the engine ignition; elastic means connecting the said valve with the said ignition controlling means and adapted, as the spark is advanced, to close the fuel supply valve; a throttle valve; means for operating the throttle valve; means connecting the throttle valve to the said fuel supply valve and adapted when the throttle valve opens beyond a predetermined limit, to open the fuel supply valve; substantially as described.

3. In a carbureter, in combination; a fuelsupply valve adapted when rotated to control the fuel supply; a pulley on the spindle of said fuel supply valve; a spring one end of which is fixed to an adjustable part and the other end of which is connected to one end of a flexible member anchored to the pulley; a moving part adapted to control the engine ignition; elastic means interposed between the other end of the said flexible member and the said moving part; a throttle valve; a lever connected thereto; a second pulley on the fuel supply valve spindle; a flexible member anchored to the said second pulley and the free end of which is con- Gopies of this patent may be obtained for five cents each, by addressing the nected to the throttle valve lever; substantially as described.

4. In a carbureter, in combination; a fuel supply valve adapted when rotated to control the fuel supply; a double grooved pulley adjustably secured to the spindle of the said valve; a spring one end of which is fixed to an adjustable part and the other end of which is connected to one end of a flexible member anchored to one of the grooves of the pulley; a moving part adapted to control the engine ignition; elastic means interposed between the other end of the said flexible member and the said moving part; a throttle valve; alever connected thereto; a second lever adjustably mounted thereon; a flexible member anchored to the second groove of the said pulley and the free end of which is connected to the said second lever; substantially as described.

In testimony whereof, I affix my signature in presence of two witnesses.

' .JNO. BERRY.- Witnesses:

J OSEPH E. I-Imsr, HARRY W. POWER.

Commissioner of Patents,

Washington, D. 0.

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