Патент USA US2136500код для вставки
Nov. 15, 1938.’ _ E. _E. GRIESE ET AL 2,135,500 CONTROL DEVICE FDR INTERNAL COMBUSTION ENGINES Filed March 12, 19:57 A w "M ,,. .i. own/é, NW1J41w J .,4|0\5 . :.... 1 H/ \” 74591/1, / 4 5 I \v. Er: w i /WX” ?x a4 W», 3. \m?\zuk\w w .7 4 on Mm EK wfsAwas n¥mNmAmsvNH R55 5 GF/W/5% Patented Nov. 15, 1938 2,136,500 UNITED STATES PATENT OFFICE 2,136,500 CONTROL DEVICE ' FOR INTERNAL COM- BUSTION ENGINES ' ' Eugene E. Griese, Shaker Heights, and Frank B. Davis, Cleveland Heights, Ohio Application March 12, 1937, Serial‘ N0. 130,548 4 Claims. This invention relates to control devices such as are used upon motor vehicles for manual con trol of internal combustion engines. Automo bile engines, while ordinarily controlled by a foot 5 accelerator, usually are provided with manual control in the form. of a pull rod or wire con nected to the throttle and provided with a button or knob conveniently located on the dash or else where, by means of which the driver can control 10 the engine with his hand, either to. rest his foot or for any other reason. The rod is pulled out to open the throttle and speed up the engine, the speed increasing as the rod is pulled out (01. 744-502) supply system is conventionally shown at I. Within it is the usual throttle valve including a shaft 2 extending to the outside and having an arm 3 connected by a ‘wire 4 to a rod 5 slidably mounted in ‘a suitable guide and provided on 5 its outer end with suitable operating means, such as a knob or button 6 which may be grasped by the operator for the purpose of pulling out or pushing in the rod, in the usual manner. The guide shown is a stationary tubular member 'I 10 fastened to the head portion 8 of a bent strap» or yoke 9 attached at In to the dash II. _ According to the present invention, suitable more and more, and the rod will stay put in any means is provided for adjustably limiting the 15 position to which it is adjusted, either because “pull-ou ” movement of the rod 5, to thereby 15 of the inherent friction of the parts or because limit or control the setting of the carburetor by of friction orta latching eiTect specially imposed ' the pulling movement of the wire 4 which, of upon or introduced into the mechanism. One object of the present invention is to pro 20 vide improved manually operated mechanism of this kind embodying adjustable means for vari ably limiting the throttle opening movement, so that when the knob or other control device is pulled out to its limit a de?nite and desirable 25 engine speed will be secured, such means enabling the engine speed to be readily varied by small in crements to secure any desirable speed. Another object of the invention is to provide adjusting and stop means of the character de 30 scribed, which readily may be applied to- cars already in use or which may be embodied in new cars, at low cost and by convenient operations, and which is positive in operation, is durable and serviceable, and which is not likely to get 35 out of order in service. Further objects of the invention are in part obvious and in part will appear more in detail hereinafter. In the drawing, Fig. 1 represents an elevation 40 of one form of the invention, the carburetor and throttle parts being shown conventionally; Fig. 2' is a perspective View of the dash attached parts, on a larger scale; Fig. 3 is a longitudinal sectional elevation of the parts shown in Fig. 2; 45 Fig. 4 is a detail cross section on the line 4--4, Fig. 3; and Fig. 5 is a view corresponding to Fig. 3 and showing a modi?cation. While the invention may be used for the con trol of any device capable of operation by a pull 50 rod and hand button, and particularly ‘where a variable setting or adjusting is desirable, for con venience and in. no sense of limitation, the in vention has beenv shown applied for use in oper ating the throttle of an internal combustion en 55 gine. A part of the engine carburetor or fuel course, moves inside. of the usual ?exible casing or tube I2. The stop means includes a part car ried by and movable with the rod 5 and a sta- 20 tionary abutment with which said part cooper ates, either the moving part or the stationary abutment being adjustable for varying the set ting of the carburetor in the manner described. While the stationary abutment may be adjust- 25 able, the drawing illustrates adjustment of the part carried by the rod 5. As illustrated, said rod has sleeved upon it a rotatable adjusting member in the form of an externally threaded tube I3, which extends through a- bushing I4 30 fastened to the dash and is provided on the driver’s side of the dash with an operating part, such as the knurled head I5. The threads of the tube It‘ engage with the threads of a nut I6, which is shown as a square nut, two of its op- 35 posed faces travelling along the ?at faces of the arms of the yoke 9. While the screw I3 is ro tatable on rod 5 it is immovable longitudinally _ thereof, being con?ned between a collar I1 pinned to the rod and a suitable shoulder I8 40 engaged by the head I5. As will appear, either the dash, or a part attached thereto, such as the end of the bushing I4, serves as the station ary abutment for cooperation with the nut I6. In operation, assuming that the throttle is closed, 45v or in its most nearly closed or idling position, to increase the speed of the engine by manual operation, the knob 6 is grasped and pulled out, carrying with it the rod 5 and wire 4 and open ing the throttle. Screw I3 travels longitudinally 50 with the rod 5, its threaded portion sliding through the opening in the bushing I4 until the nut I6 engages the bushing I 4. Obviously the amount of sliding movement of the rod 5 until the nut engages the bushing, determines the ex- 55 2 2,136,500 tent of opening movement of the throttle and consequently the speed of the engine when the knob is pulled all the way out. By rotating the screw 13 by means of its head I5, the nut l6 may be adjusted along the rod 5 so as to variably limit the amount of the throttle opening move ment and consequently determine the engine speed when the rod is pulled all the way out. Fig. 5 shows a modi?ed form of the arrange 10 ment in which one of the two knobs 6, l5, of Fig. 2 is dispensed with as a direct operating means. erence to the nut IE to open the throttle until the desired maximum car speed is reached, With the parts in this position the operator knows that he can push the rod in to idling position of the engine throttle with the assurance that if at any time he Wants to rest his foot by taking it 01? from the foot throttle he can pull out the pull rod with his hand as far as it will go, knowing that the engine speed in the ?nal position of the parts will not exceed the desired maximum, say twen ty-flve miles per hour. In this arrangement the rod 5 has a small head The construction described is quite simple, is 6a which is seated and fully enclosed within a recess 20 in the head l5a forming part of or at 15 tached to the screw l3, the head 15a being en larged for convenient manipulation with the ?n gers. In this arrangement, to open the throttle the head l5a is grasped and pulled out, as be fore, and variable setting of the throttle is ac capable of adjustment to any desired maximum engine speed, and prevents accidents which might otherwise be caused by unintentionally ex ceeding that speed. Other advantages of the invention will be ap parent to those skilled in the art. 20 complished by rotation of the head I5a which turns the screw and. adjusts the nut as before. Otherwise the two devices are the same. While it is not essential, we prefer to use and have illustrated in the drawing arrangements in which the adjustable nut and its screw are provided with left-hand threads, so that the normal or right-hand rotational movement of the screw will increase the speed of the engine when the pull rod is pulled all the way out. The apparatus described is capable of use in 3O various ways according to the desires or require ments of the operator. In the ?rst place, if the operator does not desire to use or take advantage of the bene?ts of the invention, he can adjust the nut Hi to its extreme right-hand position in Fig. 3, where it contacts with the collar I1. In this position of the nut the pull rod can be pulled out to its full extent by pulling on the knob 6, with the ability to open the throttle to the widest 4:0 1. Apparatus of the character described, com 20 prising a pull rod extending through the dash of a motor vehicle and adapted for connection to a part to be operated, an abutment on the dash, a stop device adjustable along said rod and adapted to .cooperate with said abutment, an op erator for said stop device also extending through the dash, said stop device and operator having a threaded connection with each other, and means for preventing rotation of the stop de vice. 30 ‘ 2. Apparatus of the character described, com prising a pull rod adapted for connection to a part to be operated by pull on said rod, said rod extending through the dash of a motor vehicle and being provided on the driver’s side of said ‘ dash with an operating head, an abutment device on the dash adjacent said rod, and a cooperating stop device movable with said rod, said devices both being on the engine side of the dash, one of possible extent, the operator depending upon his said devices being adjustable lengthwise of said judgment as to where to leave the parts for the rod and relatively to its operating head to var iably limit motion of said rod toward the driver by engagement of said devices as the result of pull on said operating head. 3. Apparatus of the character described in 4 claim 2, including a threaded member rotatable on said rod, said stop device having threaded en gagement with said threaded member for ad justment of the stop device. desired operating conditions. If the operator desires to use the invention and to limit throttle opening movement to a po sition in which the car speed will not exceed a given maximum, say twenty-?ve miles per hour, he can make any proper adjustment of the parts to prevent exceeding that speed. This may be accomplished in any suitable way. For example, 50 What we claim is: the operator can rotate the knob I5 or |5a to move the nut [6 to its extreme left-hand position en gaging the stop abutment l4, in which position the pull rod is con?ned against any longitudinal motion in either direction. Then, with his foot o? from the foot throttle and grasping the kob l5 with his ?ngers and pulling out upon the same, the operator can rotate the knob l5 and gradu ally adjust the pull rod longitudinally with ref All’) 4. Apparatus of the character described in , claim 2, including a threaded member rotatable on said rod, said stop device having threaded en gagement with said threaded member for ad justment of the stop device, and means for pre venting rotation of the stop device. EUGENE E. GRIESE. FRANK B. DAVIS.