US1806752A - floyd - Google Patents

Description

May 26, 1931. Y R. H. FLoYD 1,806,752

AUTOKATIC SPARK ,RETARDER Filed July 2, 192B 7 9 mam?? 2 A. Reiz/Jzoyd Patented May 26, 1931 UNITE STATI-:s

PATENT oFF1.c-

YRAY ir. lmorn, or CHICAGO, rLLrivors, AssIGNoR, or rotary-NINE PER' CENT 'ro y IRVIN w. POWELL AND IRENE n. YPOWELL v AUTOMATIC srnnk RE'RD Application mea July 2, 1958.1 seriali ne; assiste.

This invention relates to devices for automatically retarding the spark on an internal combustion engine, and relates more particularly to motor vehicles, as it is desirable to 5 retard the spark, as in starting the vehicle, in order to avoid any possibility of breakage of the starter. Y

Generally stated, therefore, the object of the invention is to provide an improved construction and arrangement whereby the operation of the starter of a. motor vehicle, or of an internal combustion engine for any other purpose, will automatically adjust the timer of the ignition apparatus to thereby retard the. spark and avoid any possibility of breakage of the starter, which breakage is liable to happen, as is well understood, if an attempt is made to start the engine while the spark is advanced.

It is also an object to provide certain details and features of construction and combinations tending to increase the general efliciency and the desirability of an automatic spark retarder of this particular character.

To these and other useful ends,'the invention consists in the matters hereinafter sety forth and claimed, and shown in the accompanying drawings, in which;-

Fig. 1 is a plan view, partly in horizontal section, of an automatic spark retarder for motor vehicles, embodying the principles of the invention. Y

Fig. 2 is a diagram of the said apparatus.

As thus illustrated, the invention comprises any ordinary or suitable internal com-. bustion engine 1,'such as that on an ordinary motor vehicle, provided with a rotary timer 2' of any ordinary or suitable construction. As is usual, this timer has an arm 3 that is suitably connected by link means 4 with the arm 5 at the Vlower end of the spark shaft (not shown) in the steering column 6, the upper portion of which latter is shown broken away l and omitted for convenience of illustration. At the upper end of this column, adjacent the steering wheel, as is'well known and understood, a spark lever (not shown) is provided for adjusting the vtimer (by rocking said shaft one way or the other) to advance or retard the spark. A starter pedal 7 is provided, is'sl'icnvnl in the dr`awing`s,'which are illustrative of one forni' of the invention, andl t'o' avoidany possibility of breakage" `of the starter, by back firing, when this pedal is depressed, means are providedfor automatically retarding the spark-as followsz` A heliXor coil.8 is provided,"ina brass' or other suitable shell"V 9, and piyote'd at one ndj a 10aa traigan on menores The armature of this electric coil is in the form of a reciprocatingrod 12 that is slidableendf wise" in the't'ubula'r guide 13 of said coil'.4v nut 14 is adjustably mountedon the'l ,rod`r` like armature 12,VV as shown, and a coiled Yspring 1.5 is vinter/,posed between this nut' and the? shoulder 16 of the coil strtic'ture,jwhere by the'armature is yieldingly" held n'o'rf mal position. The said armature 12 iss-wiv- @uy 0i' pvotally connected at V17 Withlth said link means 4 previously mentioned, whereby energizing of the coil, and; consequentl recipr'ocation of the' armature 1`2toward'the pivot 10, will result in adjustment of the timer 2 in ai direction to retardV the spark.' This is preferably accomplished au# tomaticallyby operationof the 4starter 7", as shown' in lig'. 2 of the drawings, it being observed' that when the'starter 7 yispressed againstth'e contact point 18"to:'clos'e'lthe cirfcuit Vfrom "thebattery 19` through j the motor 20, acircuiti's also completedlfromsaid bat-` tery ,through` the coil 8, through the ground connections'z21and 22, "as well as through the groundconne'ctions 21 and 23, thus energizing' the coil andcausing the' armature 12 to au` tomatically adjust theV timer in position to retard thefsparkQV When `.the starter is released, the circuit through the coil'S is automatically'opened, and the spring 15 willreturn the ,timer to normal position.- r

' It will be seen, therefore, that the invention" provides means for automatically ret'arding'the spark, in s tartinga motor fve-f hicle, or' starting an internal'V combustion engine: of any'suitable characterflthereby avoidingthepossibility of' breakage of the starter, Awhich breakage is `l iable"'tof-occ,uras the result of back firing when is attempted to'start the engine'` with the? spark in ad# Vance position;

It will be understood, of course, that the nut 14 can be adjusted to change the normal position of the armature l2, in order to insure the desired results, if such is necessary or desirable.

It will be seen, therefore, that the electromagnet, the armature core, and the spring, all enclosed in the same casing, constitute a unitary electromagnetic automatic timer actuator which can be easily connected in operative position in an ordinary motor vehicle, the unitary device havingvonly two points of attachment, one at each end thereof. The arrangement shown and described, is illustrative of one method of using the said unitary device, but it is obvious that the device can be coupled in position to automatically control the timer in any suitable or desired manner, without departing from the spirit of the invention.

Without disclaiming anything, and without projudice to any novelty disclosed, what I claim as my invention is:

l. In a motor vehicle, the combination of a timer controller member, a timer subject to manual control by said member, a starter member, an electromagnet solenoid having an energizing circuit controlled by said starter member, whereby the electromagnet is automatically energized when the starter is energized, an endwise movable armature core for said magnet, means whereby said electromagnet solenoid and core have pivotal support and controlling connection with said timer, and a helical spring for said armature core, forming with said magnet and core a movably supported unit in which the spring and solenoid and core have a common longitudinal axis, whereby to automatically restore said core to normal position in said magnet, after the engine is started, the energizing of said magnet serving to move the timer to retarding' position, and said spring serving automatically to advance the timer after. the engine is started.

2. An attachment for motor vehicles for automatically retarding the spark timer when the engine starter is operated, comprising a cylindrical electromagnet solenoid provided with an endwise movable armature core, a casing enclosing said magnet and armature, providing a chamber at one end of said mag net, a helical spring in said chamber for automatically restoring said armature to normal position when the magnet is de-energized, said armature having a rigid portion projecting from one end of said casing, said projecting portion having means of support, and the other end of said casing havmg means of support, whereby said attachment may be connected as a movable link in operative relation to the timer of a motor vehicle, and means whereby the motor vehicle starter is operative to automatically close an energizing circuit through said mag- RAY H. FLOYD.

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