US1736861A - Spark producing and distributing apparatus for internal-combustion engines - Google Patents

Description

v. PAQUIT SPARK fRODUCING AND DISTRIBUTING APPARATUS l 5 t e e h s 2 Nov. 26, 1929.

FOR INTERNAL COMBUSTION ENGINES Filed Jan. 25, 1925 AIIIIIIHI NOV. 26, 1929. v, PAQUIT 1,736,861 SPARK PRODUCING AND DISTRIBUTING APPARATUS FOR INTERNAL COMBUSTION ENGINES Filed Jan. 25, 1923 2 Sheets-Sheet 2 wue-ntom Patented Nov. 26, 1929 VITAL PAQUIT, OF NEW YORK, N. Y.

SPARK PRODUCING AND DISTRIBUTING APPARATUS FOR INTERNAL-COMBUSTION ENGINES Application filed January 25, 1923.

This invention relates to vertical type ignition apparatus for use in conjunction with the requirement of internal combustion engines, and my improvements are particularly directed to certain novel features which may be briefly summarized as follows:

1. The arrangement of contact plates upon the periphery of a rotor, equi-spaced, circumferentially and in different horizontal planes, and the arrangement of brushes, suitably secured to the casing, to coact with the contact plates on the rotor, so that the brushes to which the spark plugs of the engine are con nected, will successively close the ignition circuits at regular intervals, for the respective cylinder.

2. The provision of a contact breaker, located within the rotor casing, including a cam carried by the rotor shaft, and means whereby the cam and the rotor may be adjusted to set the timing of the ignltion, without the removal of contacting parts.

3. The provision of means upon the rotor casing, exterior thereof, for containing the condenser.

4. The provision of an oscillable plate, mounted within the casing, carrymg the breaker mechanism, and a projecting lever whereby the plate may be shifted relatively 3 to the cam in order to change the pos tion of the breaker, and thereby cause the ignition spark to be advanced or retarded.

Other features and advantages of my invention will hereinafter appear.

In the drawings:

Fig. 1 is a vertical sectional view of an apparatus embodying my invention, taken on the line 11 of Fig. 2,

Fig. 2 is a top View thereof, partly broken a y,

Fig. 3 is a horizontal section taken on the line-33 Fig. 1,

Fig. 4 is a detail sectional view taken on the line 4-4 of Fig. 3,

Fig. 5 is a detail sectional view taken on the line 55 of Fig. 2, and

Fig. 6 isa diagram of the wiring illustrating the electrical system.

It'is the purpose in employing my improved ignition apparatus to house the rotor,

Serial No. 615,448.

rial, and provided with a removable cap 2.

In the example illustrated the casing 1 is contracted at its lower end in the form of a terminal neck 3, whose base is provided with a flange 4 and is adapted to seat upon the upper end of a shaft housing 5 that is also provided with a flange 6, the neck 3 and housing 5 being connected by means of bolts 7 that unite the flanges. An engine driven shaft 8, revoluble in a bushing 9, provided in housing 5, extends beyond the housing so that it may enter neck 3, and has a U-shaped slot 10 formed transversally in its end. A bushing 11 is fitted within the neck 3, and, for convenience in assembly, is provided with an annular collar 12 to seat upon a shoulder 13 formed at the upper end of neck 3.

Revoluble within the casing is a rotor 14, composed of suitable insulation material, and secured to a sleeve 15 upon which the rotor 14, is preferably moulded thereon. This sleeve 15, which extends vertically within the casing, contains an axial shaft or bolt 16, pro vided, at its upper end, with a head 16. A cam 17 is adapted to seat upon the end of the sleeve 15, and has a cylindrical projection 18 that enters the sleeve 15, said projection 18 having a radial spline 19 to enter a slot 15 in the sleeve, to thereby key the cam and sleeve together. A spring washer 18 is interposed between head 16 and cam 17, and when the bolt 16 is tightened up in its threaded engagement, with a hub 20 at the other end of the casing, the bolt, cam, sleeve and hub are thereby secured together for unified rotation. The hub 20 is journalled within the bushing 11, a thrust-bearing being provided by means of an annular collar 21 to the hub that co-acts with the upper surface of the bushing 11. The hub 20 is hollowed out cylindrically from its lower end, thereby enabling it to receive the slotted end of engine driven shaft 8. A pin 22 extended transversely through the hollow portion of hub 20, and secured to the hub, is adapted to enter the slot 10 located at the end of shaft 8, so that the arrangement provides an automatic attachment between the ignition device and the engine. At the upper end of the casing is a plate 23 which is seated upon a horizontal bearing in the form of a shoulder 24 and secured thereto as by screw means 25. The plate has a pendent concentric flange 26. within which is fitted a bearing member 27, whereof the complementary member 28, to provide a raceway for balls 29, is secured to the sleeve 15.

Secured upon plate 23, as by screws 30, is a block 31 of insulation material, while imposed upon block 31, and secured thereto as by the same screws 30, is a strap 32, which form an engaging socket for a binding post 33, that serves as a terminal for the primary winding of the induction coil.

In order that the strap and socket may lock the binding post 33 in its engaged position, its inner surface is angled as at 34 Fig, 4 and a transverse peripheral recess 35 is provided in the binding post to co-act therewith.

Fitted and secured between the insulation 31 and strap 32 is a strip of conductive spring-like material 36, whose free end is bent upwardly in order that it may bear tensionally against a contact member 37 shown in dotted line in Fig. 2, that is mounted on insulation material 38, secured to the under surface of a plate 39, which is oscillably mounted in the casing. As shown, this plate 39 is provided with a pendent annular flange, by which it rests upon a shoulder 40 formed on the inner surface of the casing.

A groove 41, formed annularly in the casing, just above the upper perimeter of plate 39, serves for the partial reception of a spring wire ring 42, which is thus enabled to c0-act with the shoulder 40 to restrain the plat 39 against vertical motion, while leaving the plate free for oscillable movement in its horizontal plane.

The condenser 43, here shown as contained in a chamber 44 provided therefor at the outer surface of the casing 1, is included in the primary circuit with the binding post and conductive strip 36', which, by means of contact member 37, is in communication with the breaker contacts.

The particular breaker mechanism designed by me for highly efiicient and endur ing service, consist of a channeldike member 45, provided and pivoted to the plate 39 as at 46,; and having fitted and clamped therein a projecting wear-piece 47, to co-act with the cam 17. A straight spring 49 extends along the back of member 45, in spaced relation therewith, being secured at one end to member 45, near the pivotal end thereof, and being separated at its free end from the free end of the member 45 by a piece or block of anti-friction material 50, whose function is to eliminate frictional resistance as relative motion occurs between member 45 and spring 49 in the operation thereof.

The usual adjustment screw 51 bears against spring 49, and member 45 carries a contact 52 to co-act with an opposed contact 53, that is carried by a mount 54, secured to plate 39, and electrically connected with contact member 37.

The cam 17 is shown as provided with six radial points, adapted to successively engage the wearpiece 47 to break the primary circuit. This number of cam points is given because, in the example of my invention herein illustrated, the rotor 14 is shown as proided with three contact plates 55, disposed in different horizontal planes and respectively distanced 120 apart circumferentially to co-act with sir: brushes 56, arranged in pairs located in the same respective planes, apart, so that six equal intervals of time may elapse between the closing of the respective secondary circuits through collector ring 57 and brush 58 to which is attached the high tension wire of the ignition coil in order to serve the spark plugs of the engine.

It will be recalled that the bolt 16 is rovided at its upper end with a head 16, t at, by means of a spring washer 18 clamps the cam 17 upon the end of the sleeve 15, and also clamps sleeve 15 upon hub 20, thereby in a single operation uniting these several elements, with the rotor, into one revoluble element. It follows that by loosening the bolt 16, the cam and the rotor can be adjusted to any desired timing relation; furthermore, to ease the timing operation, I provide my cam with a mark on a projection thereof in conjunction with a marked terminal for the spark plug of the engine and in accordance with the rotation of the distributor and the cam, so that the first spark to be distributed is indicated on the terminal marked R for right rotation and with the marked projection of the cam breaking the electrical circuit through the contacting points of the breaker mechanism when said projection passes under wearpiece 47 of the breaker, thus preventing search for the start of the distribution.

In the operation of the engine, for advancing and retarding the ignition spark, I provide a lever 61, attached as by a screw 62 to the oscillable plate 39, in whose under surface (see 5) a radial channel is formed, by means of spaced ribs 63, that snugly receives said lever and guards it against lateral play relatively tothe plate. The lever extends through a horizontal slot 64 provided in the casing 1, whose lateral limits permit a range of movement for the lever sufiicient for maximum advancement and retardation of the spark, which is effected in the co-related movement of plate 37 whereby wear-piece 47 (Fig. 2) varies its angular relation to the cam points.

In reference to Fig 2, it will be seen that the terminals for connections between the rotor distributor and the spark plugs of the engine are provided to two separate blocks 68 and 69 apart, of insulation material and of like-construction. In these blocks are molded sleeves as 65, Fig. 1, of conductive material and wherein the contact elements as 56 and 58 are slidable and urged toward the rotor by a spring such as 66. The blocks 68 and 69 are suitably secured to the casing by means of. a fiat strap 70 and screws 71. It will thus be seen that the above combination also improves the accessibility of the breaker mechanism when said apparatus is in operation as the inspection of said mechanism may be had by simply removing the cover 2 therefor.

The Fig. 6 is an illustration diagram of the whole electrical system and is included herein only as a reference to the well known wiring of ignition systems.

Although the specific embodiment shown in the drawings is designed for a six cylinder engine, it is understood that the invention is equally applicable to engines generally, regardless of the number of cylinders.

The present apparatus is of standard ignition speed, or, half engine speed for a fourstroke cycle engine and engine speed for a two-stroke cycle engine. It will be seen that there is herein described apparatus in which the several features of this invention are embodied, and which apparatus in its action attains the various objects of the invention and is well suited to meet the requirements of practical use.

What I claim is:

1. An ignition apparatus embodying: a distributor casing of elongated form for vertical use having in its upper portion a circuit breaker operated by a cam having a marked projection and secured on the distributor shaft by means of a bolt, said bolt distributor and cam being removably secured together and revoluble in said casing. a sleeve enclosing the bolt, the distributor being of elongated form and having a plurality of wipe contacts equi-spaced alongside its axis in combination with stationary contacting elements therefor adapted to the distributor casing, an oscillatory plate carrying said circuit breaker and a contact member connected therewith, a conductive strip having a bent terminal portion to engage said contact memher and a binding post connected thereto for low tension current connection.

2. In ignition apparatus, in combination, a casing for vertical use, a rotor distributor of elongated form in said casing, a bolt and means revolubly secured by the bolt, a sleeve enclosing the bolt, a cam with a marked projection, breaker mechanism mounted in the upper portion of said casing, said rotor distributor mounted on the sleeve between the bearing arrangement of the casing, said cam located on the upper end of said sleeve and means of engagement between the engine and the i nition apparatus.

3. n a device of the class described, in combination, a casing for vertical use, a rotor distributor of elongated form therein, a circuit breaker mechanism in the upper portion of said casing, a rotary cam with a marked projection operating said circuit breaker, a mechanical arrangement of the class described for engine connection located in the lower portion of said casing, a hollow shaft carrying the distributor and the cam and enclosing a bolt serving to releasably unite said rotor distributor and cam with the engine connecting means, panels of insulating ma terial carrying contacting elements for coaction with the contacts of the distributor, said panels equi-spaced alongside the axis of the distributor, and a central brush to connect said distributor with the source of high tension current to be distributed.

4:. In an ignition apparatus, in combination, a casing, a bolt having a head, means removably secured by the bolt and revolubly mounted in the casing, a sleeve enclosing the bolt and bearing arrangement for axially rotating the rotor mounted on the sleeve, breaker mechanism mounted in the casing, a cam located at the upper end of the sleeve to actuate the breaker, and means of engagement between the engine and the ignition apparatus, the head of the bolt serving to releasably unite the rotor and the cam to the engine connecting means.

5. In an ignition apparatus, in combination, a casing, a shaft journalled in the casing, a rotor distributor carried by the shaft, a cam also carried by the shaft, an oscillable plate, a breaker carried by the plate to co act with the cam, a contact member upon the oscillable plate, a conductive strip having a bent terminal portion to engage said contact member, a binding post entered through the casing wall, said post having an angled portion, a fixed mount in the casing, a strap fixed to secure the binding post by means of an angled portion of the post in order to lock same, and the strap also securing the conductive strip to the fixed mount.

Signed at New York in the county of New York and State of New York this 24th day of January, A. D. 1923.

VITAL PAQUIT.

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