US1283863A - Governing device for internal-combustion engines. - Google Patents

Description

E. MOORE.

GOVERNING DEVlCE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED FEE-18.1918. 1,283,863.. Patented NOV. 5,1918.

2 SHEETS-SHEET I.

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GOVERNING DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED FEB. I8, 1918.

Patented Nov. 1918 2 SHEETS-$HEET 2.

INVENTOR EDMHED MUD/QE- BY 45%; 2M ATTORNEY UNITED STATES PATENT OFFICE.

EDWARD MOORE, 0F NEWARK, NEW JERSEY, ASSIGNOR TO SPLITDORF ELECTRICAL COMPANY, OF NEWARK, NEW JERSEY.

GOVERNING DEVICE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Nov. 5, 1918.

I Application filed February 18, 1918. Serial No. 217,863.

To all whom it may concern Be it known that I, EDWARD Moore, a citizen of the United .States, residing at Newark, in the county of Essex and .State of New Jersey, have invented certain new and useful Improvements in Governing Devices for Internal-Combustion Engines, of which the following is a specification.

My invention relates to an automatic gov erning device for controlling the time of ignition of an internal combustion engine. In the operation of such engines on trucks it has been found advantageous to use auto--' matic spark advance to get the highest efficiency in the operation of the engine and the truck. The work required to drive a truck is considerably in excess of that required to drive a so-called pleasure vehicle and for that reason the driver of a truck is quite likely to forget to retard the spark when the truck reaches a hill, and with the spark in full advance position when the engine slows down, due to the grade, the engine will begin to knock with consequent detriment thereto and loss of power. It is, therefore, advisable to provide such engines with an automatic governing device which will automatically control the time of spark with reference to the engine speed. It will be understood, of course, that my governing device may be used on pleasure cars or any ther automotive vehicle requiring an automatic control of the sparking machine, and I do not wish to be limited to any particular application.

It is another object of my invention to provide a governing device that is simple, compact, cheap to manufacture, yet eiiicient in its operation.

Other and further objects will be apparent from a study of the drawing and specification attached hereto.

In the drawing, Figure 1 illustrates a high tension magneto having my governing device mounted on its driving shaft.

Fig. 2 is a plan view of the interior mechanism with a part of the driving member removed.

Fig. 3 is a view similar to Fig. 2 except the parts are shown in anotherposition of operation.

Fig. 4 is a rear View of Fig. 2.

Fig. 5 is a part plan and sectional view of the part that is removed from the governing device shown in Figs. 2 and 3.-

Fig. 6 is a top plan view of my governing device with a portion, in the neighborhood of point A, broken away.

Fig. 7 is a full sized view of my governing device attached to a magneto and showing the driving shaft attached thereto, part of the coupling member being broken away.

.Fig. 8 is a vertical section through the parts shown in Fig. 7, the studs in the governing device and in the magneto shaft being shown in full.

Fig. 9 is a plan and side view of that part of the coupling member attached to the governing device.

Referring now to the details, wherein like numbers refer to corresponding parts in the various views, 1 is a magneto having a shaft 2 upon which my governing device 3 is mounted, the same being held in position on I the shaft 2 by nut at. Extending from the governing device are studs 5 and 6 which engaging the studs 5 and 6 all for the purpose of driving the governing device and the magneto. Briefly the driving device consists of a driving shaft 4.1 to which is fastened a -member 42 by means of a pin 43. Member 42 has cars 44 to which are attached pivotal members 45 adapted to coact with pivotal members 46 carried by a plate l7. Resilient members t8 have their ends so formed as to engage grooves in the piv otal members 4 and 46 close up to the cars 44 and the plate 47 so as to hold the plate 47 securely to the member 42 so as to pro-- duce a certain flexibility of movement between the driving shaft 41 and the plate 47. Fastened to the plate 47 are additional pivotal members similar to 46 but arranged on the plate 47. 90 from the members 46. That part of the plate 6L7 carrying these addi:

38 with holes 37 therein to receive pivotal members similar to 45, springs 50 being thereby clamped between plate 47 and the part 36 thus giving flexibility between the coupling and the governing device ina plane 90 from that between the plate 17 and the driving shaft 41. In Fig. 7 the lug 38 is shown broken away so that only one of the springs shows. Part 7 has a central block 10 preferably integral therewith disposed on its inner. face.

The block 10 has a hole 11 preferably tapering in form to fit the usual tapered shaft on the magneto, a keyway 12 being cut therein to assist in holding the part 7 and block 10 on the shaft 2. Extending from the rear of the plate 7 is a hub 13. Supported on the hub 13 is a plate 14: which carries the studs 5 and 6 which are rigidly fastened thereto and pass through arcuate .slots 15 and 16 in the part 7. Disposed within the interior of part 7 but pivotally mounted on the studs 5 and 6 are Weighted arms 17 and 18 which have gear teeth 19 adjacent said pivot studs. The gear teeth 19 are adapted to mesh with corresponding gearteeth 20 on the block 10. The hubs 'of' the arms 17 and 18 are'slotted to receive elements 21 and 22 which constitute part of auxiliary arms 23 and 24. Preferably the arms 23 and 24 are each made up of three metal punchings of which 21 and 22 constitute the middle ones, all being fastened together in any suitable way, as by rivets 25. The same construction may be followed out in building up the arms 17 and 18. It will be seen that the arms'23 and 2& are thus pivoted on the studs 5 and 6 along with the arms 17 and 18. The elements 21 and 22 are each constructed in a similar manner with a pro ection 26, the purpose of which will be hereinafter described. Mounted on the arms 17 and 18 are resilient members 27 being attached thereto in any satisfactory manner, such as by screws 28 which may pass all the way through the arms and have the ends riveted over on the opposite side of the the band 32.

- into the V-shaped openings 35, formed by the projections 26, and the springs 27 engage the projections 26 thereby holding the arms 17 and 18 in a more or less locked position so that rattling is prevented and my governing device will operate quietly at said low speed. It may also be mentioned, at this point, that after the engine has been running at high speed, the parts being in position shown in Fig. 3, and the speed is suddenly reduced the weighted arms17 and 18 in returning to normal position do so quietly since the springs 27 act as noisekilling bumpers against the projections 26. As the engine speed is increased, as by opening the throttle, the arms 23 and 24: begin tofly out toward the periphery of the flange 8 and the projections 26 will lift against the noses of the arms 17 and 18 in opposition to the springs 29 which are the first to engage This construction gives a rapid advanceof a few degrees; in some cases I prefer to make it 10. As soon as the 1 arms 23 and 24 are thrown to their full outward position the weighted arms 17 and 18 are subjected then directly to centrifugal force which is opposed by the springs 2930 and 31 that are brought into operation successively as the speed increases. The outward movements of the arms 17 and 18 acting through the gear teeth 19 and 20 causes the block 10, and therefore the shaft of the magneto fastened thereto, to advance a certain number of degrees in accordance with the construction of the parts and this advance will be controlled by the speed of the engine acting through the parts in the manner described.

One of the features of my invention is an interchangeability of the parts and their adaptability to be reversed in position for a different direction of rotation. For. example; as shown in Figs. 2 and 3 the-parts are arranged for left hand rotation while for right hand rotation all that is necessary to do is to take off the arms from the studs 5 and 6 and merely turn them over and put them back onto the studs, setting the magneto armature and the block 10 in the proper relationship,

It.will be apparent that the various details of construction shown in the Various views of the drawings may be varied without departing from the spirit of my inven tion or the scope of the appended claims.

Having thus described my invention what I claim is 1. In a device of the character described, the combination of a driven member consisting of a flanged disk having arcuate slots therein and a centrally disposed block with gear teeth out thereon and a hub extending at the opposite side of said plate with means for fastening a magneto shaft to said block and said hub, a driving member consisting of a plate rotatably positioned on said hub and having studs fastened thereto extending through said arcuate slots, means for fasten ing a driving shaft to said studs, centrifugally operated arms pivotally mounted on said'studs and having gear teeth adapted to mesh; with the gear teeth on said block whereby-when said arms move outwardly the said block and magneto shaft are caused,

and said hub, a driving member consisting of a plate rotatably positioned on said hub and havlngstuds fastened thereto extending through said arcuate slots, means for fastening a driving shaft to said studs, centrifumesh with the gear teeth on said block whereby when said arms move outwardly gally operated arms pivotally' mounted on said studs and having gear teeth adapted to the said block and magneto shaft are caused to rotate relative to the driving member, and springs carried by said arms brought into operation successively for retarding the outward movement of said arms.

3. In a device of the character described, the combination of a driven member consisting of a flanged disk having arcuate slots therein and a centrally disposed block with gear teeth out thereon and a hub extending at the opposite side of said plate with means for fastening a magneto shaft to said block and said hub, a driving member consisting of I a plate rotatably positioned on-said hub and having studs fastened thereto extending through said arcuate slots, means for fasteni ng a driving shaft to said studs, centrifugally operated arms pivotally mounted on said studs and having gear teeth adapted to mesh with the gear teeth on said block whereby when said arms move outwardly the said-block and magneto shaft are caused to rotate relative to the driving member, a wearing jband fastened to said flange and flat springs carried by said arms and brought into engagementwith said band successively for retarding the outward movement of said arms.

4:. In a device of the character described, thecom-bination of a driven member consisting of a flanged disk having arcuate slots therein and a centrally disposed block with gear teeth out thereon and a hub extending at the opposite side of .said plate with means for fastening a magneto shaft to said block and said hub, a driving member consisting of a plate rotatably posi- .through said arcuate slots,

iary centrifu-gally operated arms serving at low speeds to lock said geared arms whereby rattling thereof is prevented.

5. In a device of the character described, the combination of a driven member consisting of a flanged .disk havingarcuate slots therein and a centrally disposed block with gear teeth cut thereon and a hub extending at the opposite 'side of said plate with means for fastening a magneto shaft to said block and said hub, a driving member consisting of a plate rotatably positioned on said hub and having studs fastened thereto extending through said arcuate slots, means for fastening a driving shaft to said studs, centrifugally operated arms pivotally mounted on said studs and having gear teeth adapted to mesh with the gear teeth on said block whereby when said arms move outwardly the said block and magneto shaft are caused to ro'tater'elative to'the driving member, means for retarding the outward movement of said arms, auxiliary arms pivoted on the same studs with the geared arms and having projectionsforming an opening adapted to receive the noses of the geared 1 arms whereby said last mentioned arms are held from rattling at low speeds, said projections acting also to produce a quick 'initial movement of the geared arms as described.

6. In a device of the character described, the combination of a driven member consisting of a flanged disk having arcuate slots therein and a centrally disposed block with gear teeth cut thereon and a hub extending at the opposite side of said plate with means for fastening a magneto shaft to said block 1 and said hub, a driving member consisting of a plate rotatably positioned on said hub and having studs fastened thereto extending means for fastening a driving shaft to said studs, centrifugally operated arms pivotallymounted on said studs and having gear teeth adapted to mesh with the gear teeth on said block whereby when said arms move outwardly the said block and magneto shaft are caused to rotate ,relative to the driving member,

.means carried on said arms for retarding their outward movement, auxiliary arms pivotally mounted on the same studs with the geared arms, means on-said auxiliary arms for producing a quick initial movement ofthe eared arms and resilient members carried y the geared arms for preventing noise of engagement of the geared and auxiliary arms as said arms return to slow speed position.

'7. In a device of the character described,

the combination of a driven member consistand having studs fastened thereto extending through said arcuate slots, a cover plate positioned on said studs and substantially filling the opening made by said flange With means for fastening a driving shaft to said cover plate. and studs, and mechanism for coupling said members together including centrifugal means geared to said block for shifting the driven member about its axis relative to the driving member as the speed of the driving member varies, springs arranged to come into action successively for retarding the advance of the driving mem- ,gben'and auxiliary centrifugal means for acting on the first centrifugal means for holding said means from movement at low rotative speed of the driving member, said auxiliarymeans serving also to produce an ini tial movement of the first mentioned means.

8. In a governing device, a driving memher, a driven member, and mechanism for coupling said members together including centrifugal means for shifting the driven element about its axis relatively to the driving member as the speed of the driving member varies-springs arranged to come into operation successively for retarding the advance of the driving member and auxiliary centrifugal means for locking and unlocking and giving an initial advance to the first centrifugal means at predetermined speeds, as and for the purpose described.

9. In a governin device, a driving member, a driven mem er, and mechanism for coupling said members together including centrifugal means for shifting the driven element about its axis relatively to the driving member as the speed of the driving member va 'ies, means for retarding the advance of the drivmg member and auxiliary centrifugal means for holding and releasing the first centrifugal means and giving an initial advance thereto at predetermined speeds as and for the purpose described.

10. In a governing device, a driving member, a driven member, and mechanism for coupling said members together including reversible centrifugal means for shifting the driven element about its axis relatively to the driving member as the speed of the driving members varies, springs arranged to come into operation successively for retarding the advance of the driving member and auxiliary reversible centrifugal means for locking and unlocking the first mentioned centrifugal means and giving an initial advance thereto at predetermined speeds, as and for the purpose described.

11. In a governing device, a driving member, a driven member, and mechanism for coupling said members together including reversible centrifugal means for shifting the driven element about its axis relatively to the driving member as the speed of the driv ing member varies, means for retarding the advance of the driving member and auxiliary reversible centrifugal means for holding and releasing the first mentioned centrif ugal'means and giving an initial'advance thereto at predetermined speeds, as and for the purpose described.

12. In a governing device, a driving member, a driven member having an upturned flange with a Wearing strip thereon, and mechanism for coupling said members together including reversible centrifugal means for shifting the driven element about its axis relatively to the driving member as the speed of the driving member. varies, springs carried on said reversible centrifugal means arranged to come into engagement With said Wearing band before retarding the advance of the driving member and auxiliary reversible centrifugal means for locking, unlocking and giving an initial advance to the first mentioned centrifugal means at predetermined speeds, as and for the purpose described.

In witness whereof, I affix my signature.

EDWARD MOORE.

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