US1422725A - Combined spark timer and oil pump - Google Patents

Description

1. McCLELLAND. COMBINED SPARK TIMER AND OIL PUMP.

APPLICATION HLED MAR. H, 1921.

Patented July 11, 1922.

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l'fiwylbr I v MrCZeZZarai J. McC'LELLAND.

COMBINED SPARK TIMER AND OIL PUMP.

I APPLICATION FILED MAR-8.1921.

. Patented July 11, 1922. 3 SHEETSSHEET 2.

I. McCLELLAND.

COMBINED SPARK TIM ER AND OIL PUMP.

APPLICATION FILED MAR. 8, 1921'.

1,422,725. Patented July 11, 1922.

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I [ma/6%? UNITED STATES PATENT OFFICE;-

JOHN MCCLELLAND, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO DALLAS B. WIGGINS, OF PHILADELPHIA, PENNSYLVANIA.

COMBINED SPARK TIMER AND OIL PUMP.

Specification of Letters Patent.

Patented July 11, 1922.

Application filed March 8, 1921. Serial No. 450,695. g

I To all whom it may concern:

and State of Pennsylvania, have invented certainnew and useful Improvements in Combined Spark Timers and Oil Pumps, of which the following is a specification.

One object of my present invention '18 to provide an improved combined spark timer and oil pump of simple construction which can be used with advantage on an automobile in connection with an internal combustion engine. 7

Another object is my present invention of a simple and durable construction which can be easily and cheaply manufactured and kept in repair.

These objects, and other advantageous ends which will be described hereinafter, I attain in'the following manner, reference being had to the accompanying drawings in which Figure 1 is an end elevation of a device made in accordance with my present'invention, v

Figure 2 is a section taken on the line 2-2 of Figure 1,

Figure 3 is a section'taken on the line 33 of Figure 2,

Figure 4 is a section taken on the line 4-4 of Figure 2, I

Figure 5 is a section taken on the line 5-5 of Figure 2,

Figure 6 is an enlarged face view of a cap or plate which I preferably employ in constructing my improved device,

Figure 7 is an enlarged fragmentary view partly in central section showing the arrangement of one of my improved contacting units,

Figure 8 is a section taken on the line 8-8 of Figure 7,

Figure 9 is a section taken on the line 9-9 of Figure 3, v v

Figure 10 is a fragmentary sectional view showing a slight modification of my invention, 1

Figure 11 is a view of the same general character as shown in Figure 3 illustrating a different arrangement of certain ofthe parts of my invention,

Figure 12 is a section taken on the line 12-12 of Figure 11,

to make the device of Figure 13 is a sectiontaken on the line 13- 13 of Figure 12, and

Figure 14 is an enlarged fragmentary section taken ure 11.

Referring to the drawings and particularly to Figures 1 to 9 inclusive, the device of my invention includes a metallic casing 15 having a section 16 which provides a cyis secured to the section 16 by screws 19; said section 18 forming a closure for the outer end of the chamber 17. The section 16 of the casing 15 is adapted to abut the end 20 of the crank case; said crank case preferably having a recess 21 in its outer end in which a flange 22 of the section 16 is-adapted to rotatably fit. The cam shaft 23 of the engine extends outwardly through the end 20 of the case and through the section 16 of the casing 15; the outer end of the shaft 23 fitting in a cavity 24 in the section 18 of the casing 15. The shaft 23 is arranged with its axis coincident with the axis of the cy' lindrical chamber 17.

A disk 25 of any suitable material, which is a non-conductor of electricity such for example as fiber, has an eccentric hole 26 in which is fitted a metallic ring 27. The shaft 23 extends through the ring 27 and is secured thereto by a key 28; said key also extending into the disk 25 so that the disk is locked to the cam shaft 23. The disk 25 is of a thickness equal to the width of the chamber-17 so that there is a close rotatable fit between the sides of the disk and the inner side walls of the sections 16 and 18 of the casing 15 as clearly shown in Figure 2. A contact plate 29 is embedded in the periph eral surface of the disk 25 so that the outer surface of said contact plate is flush with the peripheral surface 30 of the disk 25 as shown in Figures 2 and 3. A screw 31 extends through the plate 29 and disk 25 into the ring 27 and thereby provides an electrical connection between the plate 29 and the shaft 23 for a purpose hereinafter described.

With the foregoing description it will be understood that the circular peripheral surface 30 of the disk 25 is eccentric to the circular surface 32 of the casing 15 which provides an inner wall of the chamber 17 Metallic contact plungers 33 are slidably mounted in metallic housings 34; said houson the line 1414 of Fig-' 'lindrical chamber 17 and a section 18 which of the disk 25.

ings having springs 35, therein adapted-to push and keep the outer ends of the plungers 33 in contact with the peripheral surface 30 of the disk 25. In the form illustrated in Figures 1 to 9 inclusive there are four of the contact plungers 33 adapted to coeact to effect sparks for a four-cylinder internal combustion engine. The housings 34, in which the respective plungers 33 are mounted, extend through holes in the sec-' tion 16 of the casing 15 and are insulated by sleeves or bushings 36 of material which is a non conductor of electricity. These housings 34 have inner flared heads and are provided on their outer ends with nuts 37 for the purpose of securing the housings to the casing 15 and also forthe purpose of securing electric conduit wires thereto in the usual manner. The contact plungers in this form of my invention are spaced equal distances apart and are arranged radially and it will be noted that during the rotation of the shaft that the contact plate 29 will successively engage the contact plungers 33 and as the disk 25 rotates. its

tact plungers 33 that electric circuits will be completed to form sparks to effect the combustion of gas within the. various cylinders of the engine.

The section 16 of the casing 15 has slots 38 therein which are positioned diametrically opposite each other and partition members 39 in the form of plungers slidably it said slots 38; the outer ends of said members 39 being slidable within hoods 40 which are screwed to the outer surface of the section 16 of the casing 15. Springs 41 are positioned within the hoods 40 and serve to press the inner ends of the members 39 in engagement with the surface 30 of the disk These members 39 as shown in Figure 9 extend the. full depth of the chamber 17 and are of a width equal to the thickness Thus the members 39 between the surface 30 of the disk and the surface 32 of the casing 15 divide the chamber 17 into two compartments 42 and 43 as clearly shown in Figure 3. It will be further understood that as the disk 25 rotates, these compartments 42 and 48 will vary in tapacity in view of the eccentric mounting of the disk 25. In other words, as shown in Figure '3, the compartment 42 is of less capacity than the compartment 43. However, it will be understood that if the shaft 23 is rotated through an arc of 180 .that the compartment 42 will have a larger capacity than the compartment 43 owing to the displacement effected by thegreater portion of the disk 25 at one side of the axis of rotation than at the other side.

The casing 15 has a port 44 which communicates with the compartment 42 at its bottom as shown in Figures 2 and 3, and this port leads outwardly and has a part 44 in a cap or end plate 45 which abuts the outer surface of the section 18. This cap 45 has a hole 46 through which a bolt 47 freely extends; said bolt being screwed into the section 18 and having a spring 48 which abuts the inner surface of a cavity 49 in the cap A strong though resilient strip 50, which may be secured to any fixed structure,

such as the body portion of the engine. has

a lower end engaging the head of the bolt 47 and it will be noted that the cap 45 will be resiliently held against the outer end of the section 18 and will permit a swinging movement of thecasing 15 so as to advance or retard the spark. For this purpose. I prefer-ably provide an extension 51 on the casing 15 and connect said extension with a link or bar 52 which mav be actuated in any suitable manner to advance or retard the spark as is necessary during the running of the automobile upon which the device is mounted. The part 44 of the port 44 is made in the form of an elongated slot, as shown in Figure 6, so that even though the casing 15 is swung on the shaft 23 as an axis. for the purpose of advancing or retarding the spark, a part of the port 44 in the casing will always be in register with the portion 44 of said port within the cap 45. The pipe 53 is secured in the cap 4.) and communicates with the portion 44" of the port 44. This pipe 53. as shown in Figure 1. has two branches 54 and 55 which are provided with check valves 56 and 57 which open in opposite directions. These pipes may lead to the crank case or any other part of the automobile where it is desired to pump oil and in the action of my device as an oil pump. the pipes are filled with oil and thecompartment 42 of the chamber 17 is also filled with oil and during the rotation of the disk by the cam shaft, the oil will be alternately sucked into the compartment 42 when the portion of the disk 25 which includes the contact plate 29 rises and when during said rotation, said part of the disk lowers. the oil within the compartment will be forced out of the port 44. Thus the oil will be forced out of the compartments 42 through one of the branch pipes and will be drawn into the compartment 42 through the other of the branch pipes.

If it is desired to use two pipes communieating with either of the compartments instead of a single pipe such as 53, the casing can be made with two ports 14. and 424:, such as shown in Figure 10, and during action the oil will be sucked into the compartment through one of the ports and forced out of the compartment through the other of the ports; it being of course understood that suitable check valves would be necessary in order to effect the circulation in the same manner as the check valves 56 and 57.

In Figures 11 to 14 inclusive, I have illustrated a form of my invention which instead of using independent partition members such as 39, the partition members as shown at 39 also act as'electric contact members, and with this construction it will be necessary to insulate the members 39 at their sides as shown at 59. In this construction the hoods 4:0 are provided with binding nuts 87 for the electric conduit wires and I have also illustrated the construction as arranged as a double acting pump including outlet and inlet ports communicating with the respective compartments. In all other respects the construction is similar to that described in connection with Figures 1 to 9 inclusive and I have therefore given similar parts corresponding reference characters.

While I have described my invention as taking a particular form, it will be understood that the various parts of my invention may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. A device of the character described including a casing providing a chamber; a member eccentrically mounted in said chamber and movable with respect to the casing; resiliently pressed members movably mounted in said casing and held in sliding engagement with the eccentric surface of said member to divide the space in the chamber to form a fluid compartment, said casing having an opening communicating with said compartment; electric contact members on said casing; and electric contact means on said member adapted to successively engage said members; substantially as described.

2. A device of the character described including a casing providing a chamber; a disk of electrically non-conductive material eccentrically mounted within said chamber and rotatable relatively thereto; electric contact plungers spaced apart within said casing; means for resiliently holding said and rotatable relatively thereto; partitions slidably mounted on said casing; means for resiliently holding said partitions in sliding engagement with said disk whereby the partitions divide the space within the chamber to provide a fluid compartment, said casing having an opening communicating with said compartment; electric contact members spaced apart in said casing; and electric contact means on said disk adapted to suecessively engage said contact members; substantially as described.

4:. A device of the character described including a casing providing a chamber; a shaft extending into said casing; a disk of electrically non-conductive material mounted in said chamber and having an eccentric hole; a metallic ring fitting said hole and secured to said shaft; a contact plate at the peripheral surface of said disk: metallic means securing said contact plate with said ring; spring pressed electric contact plungers slidably mounted in said casing and adapted to bear on the eccentric surface of said disk whereby during rotation of said disk, said plate will successively make contact with said plungers; and resiliently pressed partitions slidably mounted in said casing and adapted to bear against said eccentric surface of the disk whereby the space in said chamber is divided to form a fluid compartment, said casing having an opening communicating with said compartment; substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN MCCLELLAND.

Witnesses:

ELIZABETH GARBE, CHAS. E. POTTS.

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