US1704242A - Governor - Google Patents

Description

March 1 2 w. D CANDEE I 1,704,242

GOVERNOR I Original Filed Feb. 23, 1926 VV/U D. Gandee.

INVENTOR ATTORNEY 3: #1 W 11 m 14 fis i' i 8 Patented Mar. 5, 1929.

UNITED STATES PATENT OFFICE.

WILL I). CANDEE, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OI. ONE-HALF TO ANNA K. SMITH, 0F SPRINGVILLE, NEW YORK.

GOVERNOR. 7

Application filed February 23, 1926, Serial No. 90,225. Renewed July 28, 1928.

This invention relates to speed governors for internal combustion engines, and has for its principal object the provision of a governor adapted for use in connection with automotive engines which are converted to stationary uses.

Another object of the invention is to provide a duly sensitive governor which is simple in design and readily adjusted to any of a wide range of s eds.

Another object of t 1e invention is to provide a governor which is well protected against dust, moisture and moving objects.

Still other objects of the invention is to provide a stock form of governor which any one at all skilled in the use of internal combustion engines may install and adjust with the most simple tools.

Further objects of the invention include the provision of safety neansto take effeet in casethe governor shouldbreak, and the provision of means whereby the purchaser of a stock governor may readily adjust the said safety means in conformance with the angles at which the governor bolt drives the governor pulley.

Still other objects and advantages will appear hereinafter and will be better understood by virtue of the order of their occurence.

I have illustrated by the accompanying drawings a preferred embodiment of my invention, it being understood that this emhodiment which hereinafter described in detail, is by way of example, only, inasnnich as there are numerous other embodiments which, while differing in construction and arrangements of parts, are within the scope of my invention.

In the said drawings,

Figure 1, is a view in front elevation o the said embodiment.

Figure 2, is a view inrear elevation thereof, showing the governor weight disposed in the outermost position which it assumes when acted upon by centrifugal force.

Figure 3, is a view mainly in vertical section thereof as seen on a line 3-3 of Fig. 1 showing the governor weight in the position which it assumes when the governor is idle. i

Figure 4, is a View in front elevation of a part of the device known as the cam member.

More specifically, my improved governor includes, among other parts, a bracket 6, a

combined pulley and housing 7,and a overnor push rod 17. The embodiment ilus trated is adapted to be driven by a belt, such while the belt runs over the fly wheel of said.

engine or over other suitable driving element. The various expedients employed for attaching a governor to an engine for which it was not especially designed are well known and need no furtherdescription.

The bracket is provided with a horizontal boss 11, which is bored, as at 12,to receive a hollow tubular axle 14, fixed thereto against rotation by a set screw 15. A hole 16 drilled inthe bracket coaxial with the bore 12, and through this hole an end 17 The other end of the push rod extends. 18 of the said push rod is' enlarged and is slidable in a bore 19 of the tubular axle. light spring 20 holds the push rod yieldably in the position shown.

A safety device to take efi'ectin event of the belt breaking is provided in the form of a cam member 21, and a beltidler 22. The cam member is trunuioned on the braeketby a cap screw 23, and is provided with a substantially U-shaped recess 23' which is disposed about the push rod in such a manner that oscillation of "the cam mem- (not her to either side will cause the corres onding margin to engage the push rod an hold it locked in the exact aosition which it is in at the time of the brea ring of the belt. The cam member is actuated by the weight of the idler which mounted torevolve on the bent end of an arm 25. The idler is adjustably held in a boss 26 by a set screw 27.

a When the deviceuis sold to afcustomer,

the cam member is disposed in the position shown in Fig. 4; there being a secondand lower hole 28 in which the screw may be disposed. The purchaser is instructed to of the push rod.

install. the governor on his engine so that the exact angle at which the arm 26 will be inclined, is definitely known. That portion of the cam member coming immediately below the push rod is marked and the cam member is removed from the governor until the recess or notch is ground out at the point indicated. The cam member is then reinstalled in the position shown in Fig. 3.

The combined pulley and housing of cup form and partially encloses a space 30. The annular wall 31 of the housing pro vides the pulley surface, while a web at the outer end connects said pulley with. an internal coaxial anifl integral sleeve 33. Said sleeve is a running tit over the tubular axle; an enlarged end 3 on the latter courting with the boss on the bracket to hold the pulley operatively fixed thereon. ll ithin the cup-like housing diametrically opposed bosses 35 are provided; said bosses being located toward the open end of the housing. In each boss there is fixed a short protruding gudgeon pin 36, each extending toward. the other into the said space, but termina ing just short of the sleeve to avoid iii-- terferences. Jointly on said pins there trunnioned a governor weight 3'1" Said governor weight may be best cl'laracteriscd by saying that it is of interrupted ring- :torm, it being divided to leave a space 37", so that it may move into broken line position, (Fig. 3), without interfering with the sleeve and axle. The uninterrupted half of the weight as indicated at 38 is substantia ly round in cross section, while the terminations 38 are flattened and broadened into substantially discform. In other words, the respective portions of the weight which lie to either side of its center of oscillation are so proportioned as to weigh substantially the same so that the weight balanced on the gudgeon pins.

It is a well known fact that a ring which trunnioned as shown, and inclined at an angle, will, upon the housing rotated, forcibly assume an upright position as indicatcd by the broken lines in Fig.

A rod 39 is slidably fitted in the open end of the tubular axle to abut the enlarged end Rod 39 and push rod 17 may be collectively termed a divided push rod; it being understoodthat the safety de vice may act to hold push rod 17 against retractile movement while rod 39 is inde pendently operated by the governor weight. The last named rod is operatively connected to the governor weight, and this may be done in various ways, but in the embodiment shown, I provide a wire yoke 40 for this purpose. Said yoke is fixed at one end ll) of the rod and extends vertically to a right angle bend ll. From the bend it extends parallel to the annular wall of the housing an appreciable distance. Recesses, such as a2, are provided in light webs a3, which are integral with the annular wall of the housing, act to guide the yoke in its movements. It should be noted that these webs in guidingthe yoke cause the r d and the yoke to revolve with the housing, while the push rod 1.? tends not to rotate. The yoke bent back upon itself at a l, and is bent again at to return to the rod Referring particularly to Fig. 2, it will be seen that each gudgcon pin is locked in its boss by a setscrew l6. Loci-zoning cl this set screw permits of the pin l lug revolved in boss. To resist the tend iucy oi the governor weight to assuuiic vertical. position, a governor spring 4'7 is provided. Said is tin-nod several times about one oi the gudgeon pins. One end it; of the spring is looped around a cotter pin 49 carried by said gudgeon pin, while the other end 50 of the spring is hooked over a screw 51 carried by the enlarged epd the weight. A screw driver slot 5:2 is provided in the guilgeon pin. To adjust the tension of the spring for a given speed, the set screw is loosened and the gudgeon pin is turneafl as required to increase the tension of the spring. when this is done, tightening of the set screw locks the adjustment.

From the foregoing description oi my improved governor, it will be apparent that rapid rotation of the housing will result in the governor weight tending to assume vertical position against the resistance of the governor spring. Just as the governor weight starts to raise, pressure on the round portion of the weight on the rod is relieved, and as its weight continues to change position, the rod is easily moved inward through the medium of the yoke. As a result, the push rod advances. In all other respects my improved governor functions like the majority of sensi ive governors, in that even slight excess of speed results in a very marked movement of the push rod. Lubrication oi the entire device is e'tl'ecteil through a small oil hole 55; the oil spreading between the sleeve and axle and being retained in a basin 5G, mill d outol. the said axle.

It will be apparent now that I have provided a simple governor capable of carrying out the above objects and in which all parts are well housed and lubricated, and in which the eti'ective range of the push rod is relatively great for the other dimensions or" the governor, and while I have shown a specific construction and arrangement of parts, I do not limit myself to any specific construction or arrangement of parts and may alter its same without departing from the spirit of the invention, within the appended claims.

I claim: 1. In a governor, a revoluble hollow cylindrical housing, an axle for said housing, a

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coaxial internal sleeve to said housing revoluble on said axle, an annularly disposed Weight in the interior of said housing journaled therein to oscillate on an axis which extends diametrically across said housing at right angle to the axis of rotation of said housing whereby said weight tends to dispose itself, upon rotation of the housing, in parallel relation to. the perimeter of the housing, and yieldable means normally tending to hold said weight inclined at an angle to the aforesaid position; said annular weight being broken away at one point to avoid interierence with said sleeve and the divided ends of said weight Where it is broken away being enlarged to provide for balance.

2. In a governor, a bracket arm, a hollow boss at one end thereof, a hollow axle fixed in said hollow boss, an annular enlargement to that end of said axle which is opposed to the end fixed in the boss, a sleeve revoluble on said axle disposed intermediate of said boss and enlargement, a divided push rod extending through said axle; one end of said divided push rod extending through said boss and bracket and the other end of said push rod extending from the other end of said sleeve, a pulley rim carried by said sleeve, and a governor weight in the space encompassed by said rim and journaled in said rim on an axis diametrically disposed with regard thereto; said Weight being operable upon said push rod.

3. A governor as in claim 2 and further including; a cam element journaled to said bracket and disposed to frictionally engage the push rod Where it protrudes through the bracket, an arm extended from said cam member, and a belt idler carried on the said arm.

at. In a governor, a stationary sleeve, a.

push rod movable longitudinally in said sleeve, a centrifugally operable means revoluble on said sleeve operable to so move said push rod, a bracket arm extending radially from said sleeve, a cam member pivoted on said bracket arm adjacent said push rod and movable to frictionally engage same, and a belt idler fixed to said cam member to move said cam by gravity into frictional engagement with said push rod.

5. As an article of manufacture, a governor comprising a centrifugal mechanism, a push rod longitudinally movable by same, a fixed member through which said rod protrudes, a cam, and a pivot for said cam carried by said fixed member adjacent said rod; said cam member having a semi-circular cam surface coaxial to the pivot center of said pivot; said pivot being adjustable along said fixed member in a path radial to the longitudinal axis of said rod.

6. As an article of manufacture, a. governor comprising a centrifugal mechanism,a push rod longitudinally movable by same, a fixed member through which said rod protrudes, a cam, and a pivot for said cam carried by said fixed member adjacent said rod; said cam member having a semi-circular cam surface coaxial to the pivot center of said pivot; said pivot being adjustable along said fixed member in a path radial to the longitudinal axis of said rod, and said cam being adapted for machining to alter the said semi-circular surface of said cam.

WILL D. CANDEE.

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