US1114265A - Starting mechanism for motor-vehicles. - Google Patents

Description

HUPP. A STARTING MECHANISM FOR. MOTOR VEHICLES.

APPLICATION FILED MAB..6, 1911.

1,114,265. Patented 0@t.20,1914.

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' UNITED STATESPAEPENT' orrion.

RUSSELL-RUFF, or nnrnorr,

MICHIGAN, ASSIGNOR 'ro PACKARD moroncmcom PANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

STARTING MECHANISM FOR MOTOR-VEHICLES.

Specification of Letters Patent.

Patented Oct. 20, 1914.

Application filed March 6, 1911. Seria1 No. 612,705.

1 ing the motor. As is well known, in a motor of the internal combustion type one of the 1 essential elements is an ignition mechanism for causing a spark in the cylinder to explode the charge' and usually this ignition mechanism is=sq'"constructed that the time of the spark relative to the position of the piston maybe varied within certain limits for the purpose oi-pausing early or lateignition. Late igni 'onis required in starting in order that: jjgnotor shall start in the right direction," and early ignition is essential after themoto'rhas .been started in order that the charge may be completely fired. Insome. motor vehicles of today the timing of the ignition mechanism uallycontrolled and the judgment of the operator is depended upon to properly. ad-

- system is particularly adapted for Vance the spark for the various motor speeds. In the-present system, however, the ignition mechanism is so constructed that during the normal operation of the motor the spark is always in an advanced position, thus freeing the operator of the responsibility of properly timing the spark. This commercial vehicle use where drivers of various degrees of intelligence are employed and it is desirable to give the driver or operator as little as possible to take his attention. With the system last mentioned, however, it is necessary to have some means for temporarily retarding the spark for the purpose of starting the motor, and where a battery is part of the equipment of the ignition mechanism this starting is frequently done :by merely placing the battery in circuit and retarding the spark to the limit, whereby the charge left in one of the cylinders when the motor is stopped is exploded and the motor caused to start without cranking,

In the present invention a hand lever is provided on the motor vehicle dash and so is manconnected with the ignition mechanism that the latter may be moved to retarded position, and when the hand lever is released, as would naturally be done after the motor had started, a spring retracts the ignition mechanism placing it in a predetermined advanced position for normal motor speeds. In the event the motor will not start on the spark, provision is made for cranking? and a connection is provided between the starting crank and the ignition mechanism whereby the spark is retarded While the starting crank is in engagement with the crank shaft and as soon as the motor has started and the crank is disengaged the ignition mechanism immediately adjusts itself to the advanced position. Thus it will be seen that the ignition" mechanism is always in advanced position except when it is manually held in retarded position by the hand lever on the dash or by engaging the starting crank with th crank shaft.

The objects of the-invention are to construct a motor vehicle having the characteristics' above pointed out and to simplify the mechanism so as to make itpositive in its action and simple to construct and maintain. These objects will be enlarged upon in the following specification and the details of the invention will be described therein.

In the drawings, Figure 1 is aside elevation of the forward part of a motor vehicle embodying the invention; Fig. 2 is a plan view of the same with the motor cylinders removed to more clearly illustrate the connections to the ignition mechanism; and

Fig. 3 is an enlarged view of some of the' governor, J7 housed-in crm'ncctions from the governor to the throttle, 18 the con1-- mutator or contact box which controls the timing of the battery ignition circuit, 19 the magneto driven by the motor ha ving a rockmg part 20 to control the tuning of the magneto spark, and 21' the forward end of the motor crank shaft with which the clutch Battery and magneto ignition systems are so well known that it is not necessary to fully illustrate and describe them in this specification. It will be understood that the battery is suitably connected with the spark plugs of the motor and that the timing of the spark is controlled by a contact box as 0 shown somewhat diagrammatically at 1,8 and the movable part of this contact box may be rocked by a connecting rod 24 which is pinned toa hand lever 25 pivoted on a standard 26 mounted on the motor. This standard-has anotherarm 27 which operates a rock shaft 28 through a connecting rod 29, and an arm 30 on said rock shaft operates the rocking part of the magneto, whereby the contact box 18 and the rocking 2 part 20 of the magneto are moved in unison for the purpose of advancing and retarding the spark in the motor. It will be understood that the contact box 18 and the rock-- ing: part 20 of the magneto control the make-and-break of the low tension circuits of the battery and magneto, respectively, and that the high tension circuits are provided with suitable distributers for distributing the high tension current to the spark 3o plugs in the cylinders in proper sequence. Another arm 31 on the standard 26 is connected with a lever 32 by a rod 33, and.

the crankshaft 21 of the motor, and this movement of the lever 32 rocks the stand ard 26,1 which in turn, through the various connectin rods and shafts moves the con tact box 18 andthe rocking part 20 of thei magneto 19 to retarded position. A spring '36 surrounding the starting crank shaft bctween the lever 32 and the projecting portion 37 of the motor crank case 38 retracts; the starting crank and the lever 32 and the thereby simultaneously disengages I starting crank and moves the contact box and the magneto to advanced position.

From the above it Will be seen that the spring 36 normally retains the starting crank in disengaged position and at the sametime retains the ignltion mechanism in advanced position, and the said mechanism may be temporarily shifted to retarded po-v sit1on by moving'the hand lever 2'5 or bymoving the starting crank into engaging position with the motor crank shaft and in,

either case the ignition mechanism is immediately returned to advanced position when the motor starts or when the hand lever is released.

In the form shown in Fig. 3 a sprlng takeup is provided in the rod 33, this rod being divided into two parts, 33 and 33", each of which is provided with a lug 39 plnned thereon and having an opening 40 in which 7o 1 the other section is gulded. A spring 41 tends to'separate the rod'sections and a stop 42 pinned to one of the rods limits the separating action. In said Flg. 3 the start ng crank is shown in full lines in the posltlon just as it is about to engage the motor crank shaft, having been moved from its fully retracted position, and the levers are soproportioned that the ignition mechanism is 1n full retarded position in this position of the starting crank 23. As the starting crank is moved to full engagement with the motor crank shaft 21 the ignition mechanism isstill retained in its retarded position, but there is no further movement of .said mech- 35 anism because of the take-up connection between the sections of the rod 33. Thus the ignition mechanism is insured of being in full retarded position even though the starting crank may be only partly engaged with the crank shaftv as might be the case the careless handling of the starting crank."

Having thus described my invention, what.

I claim is z I 1. In a .motor vehicle, the combination .95}, with a hydrocarbon motor having an adjust-A able spark advance mechanism and a spring to yieldingly retain said mechanism in advance position, of a free swinging lever accessible from the drivers seat for moving said mechanism to retarded position, the connections being such that the mechanism is returned by said spring to advanced position upon' the release of said lever by the driver.

2. In a motor vehicle, the combination with a hydrocarbon motor having an adjustable spark advance mechanism, of a starting crank for said motor, and a spring .on the starting crank and connected to said mech-- anism and to said crank for advancing the former and for disengaging the latter.

3. In a motor vehicle, the combination with a hydrocarbon motor having an adjustable spark advance mechanism, of a starting crank for said motor, connections from the starting crank'to said mechanism for positively retarding the spark when the crank is engaged with the motor crankshaft, and a spring on the starting crank to disengage the same and having engagement with a lever of said connections to thereby ad-' vance the spark.

f1. In 'a motor vehicle, the combination with a hydrocarbon motor having an adjustable spark advance mechanism, of a starting crank for said motor, connections from the starting crank to said mechanism for positively retarding the spark when the crank is. engaged with the motor crank 1.39

shaft, and permitting the retarding of the spark independently of the engagement of @said starting crank, and a spring on the starting crank to disengage the same and having engagement wlth the lever of said connections to thereby advance the spark.

5. In a motor vehicle, the combination with a hydrocarbon motorhaving a spark and the continued movement of said crank to full engagement serves to retain said device in retarded position.

6.-In a motor vehlcle, the combination Copies of this patent inay be obtained tor five cents each, by addressing the Commissioner of Patents, 7

with a hydrocarbon motor having a spark control device, of a starting crank for said motor, connections from said starting crank to said device whereby the initial movement of the starting crank toward engaging position fully retards said device and the con-- tinued movement of said crank to fullengagemcnt serves to retain said device in retarded position, and a spring to disengage said starting crank and to thereby advance said spark control device.

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

' RUSSELL HUFF. Witnesses:

W. N. FINCKEL, Jr.,' H. H. COBURN.

Washington, D. 0.

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