US854418A - Engine-governor. - Google Patents

Description

No. 854,418. PATENTED MAY 21, 1907. s. s. HALL.

ENGINE GOVERNOR.

APPLIOATION FILED JAN. 4, 1907.

2 SHEETS-SHEET 1.

PATENTED MAY 21, 1907.

S. S. HALL. ENGINE GOVERNOR. APPLICATION FILED JAN. 4, 1907.

2 SHEBTSSHEET 2.

tinrrEE STATES EarEEr oEEroE.

STEPHEN S. HALL, OF PORTLAND, CONNECTICUT, ASSIGNOR T THE PICKERING GOVERNOR 00., OF PORTLAND, CONNECTICUT, A COR- PORATION.

ENGINE-GOVERNOR.

Patented May 2i, 1907.

Application filed January 4,1907- Serial No. 350,842.

To all whom it may concern: 7

Be it known that I, STEPHEN S. HALL, a citizen of the United States, residing at Fortland, in the county of Middlesex and State of Connecticut, have invented a new and useful Improvement in Engine-Governors and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, which said drawings constitute part of this specification, and represent, in

Figure 1 a side view of the lower portion of an engine governor partially broken away to show my improved valve stem adjusting device. Fig. 2 a front view of a standard type of governor to which my invention is applied. Fig. 3 an enlarged sectional view ot my valve stem adjusting device detached. Fig. 4 a perspective view of a disk such as may be substituted for the balls. Fig. 5 a sectional view illustrating one form which my invention may assume to apply downward pressure. Fig. 6 a broken sectional view illustrating a still further modification of arrangement for downward pressure.

This invention relates to an improvement in engine governors and particularly to means for adjusting the valve rods therefor. Various devices for this purpose have been arranged but usually they are in such close relation to the valve chamber that they become so heated that they cannot be conveniently adjusted.

The object of this invention is a simple arrangement of parts by which the adjustment of the valve rod may be conveniently and quickly made; and the invention consists in the construction hereinafter described and particularly recited in the claims.

In carrying out my invention I form the usual speeder collar 2 with a lower extension 3 and with an arm 4 at right angles thereto, and instead of having a continuous valve stem I divide the stem into two members, an u per stem 5 and a lower stem 6, the stem 6 being fixed in the extension 3 and the stem 5 entering a vertical passage 7 in the upper end of the collar 2. This vertical passage connects with the passage in the arm 4 forming a curved chamber 8 in which are located a series of balls 9. The main portion of the chamber 8 is slightly larger in diameter than the diameter of the stem 5 and the balls correspond in diameter to the diameter of the chamber. In other words the upper end of the passage is contracted so that the balls cannot escape when the upper stem 5 is removed.

To prevent the withdrawal of the stem for the turning thereof, I mount a screw 10 in the upper end of the collar, the end of the screw adapted to enter a slot 11 formed in the stem 5. The outer end of the horizontal arm 4 is enlarged to receive a nut 1'2 which may be secured therein by a transverse pin 13. This nut receives a screw 14 which is adapted to enter the chamber 8 and is provided at its outer end with a hand wheel 15 or other suitable means for conveniently turning the screw. When it is desired to raise the valve stem the screw let is turned forcing the balls 9 inward and against the lower end of the stem 5 and raising it. As above described the adjusting device is arranged to operate a valve stem in which the pressure is downward, or in which the valve stem moves downward to close the valve, and to permit the stem to fall the screw is turned in the reverse direction allowing the balls to drop by gravity and the stem to enter the chamber 8. The speeder toe-piece 16 engages with the collar 2 in the usual way for raising and lowering the same under the tension of the speeder spring 17.

- It is apparent that instead of employing balls as shown in Fig. 3 of the drawings, disks may be used. with substantially the same effect, the chamber 8 being correspondingly formed. The arm 4 may be of any suitable length to clear the speeder shaft and to carry the operating handle 16 beyond the valve chamber. To operate a valve stem in a governor in which the valve is closed by the raising of the stem, the balls may be reversed in position; thus as shown in Fig. 5 of the drawings, the speeder collar 2 may have a horizontal extension 18 projecting to one side from the upper end or at a point above the lower end of a vertically movable stem or shaft 5, and this stcmpr shaft 5 may have a groove 1.) in one side slightly less in depth than half the circumference of the balls, the lower end of the groove forming a shoulder 20 on which the lowermost ball of the series will rest and so that as the balls are forced into the casing they will force the stem or shaft 5 downward;

i follow the channel or. when pressure is relieved, they will permil; the stem to lift. hen it lifts, however, as more than half of the circumference of the balls-.stands'in a plane outside the plane of the stem, it will be seen that they will into the horizontal section 18. Instead of providing the stem with the groove 19 as above described, the stem or shaftmay be provided at its lower end with a foot 21', as shown in Fig. 6, against which the lowermost ball of the series will rest, and so that inward pressure upon the balls will force the stem downwardin the same manner as last above described. It Will thus be seen that the vertically movable valve stem may be raised or lowered accord ing to the direction of pressure which it is necessary to overcome.

I claim 1 1 1. The herein described valve stem adjusting device com rising a collar, an arm integral with the co lar and projecting therefrom, a curved passage connecting the collar and arm, balls arranged within said passage, a valve stem extending into said passage and into contact with said balls, and a screw adapted to enter said arm and bear against said balls, substantially as described.

2. The herein described governor valve stem adjusting device comprising a collar, an integral arm extending horizontally therefrom, a passage through said collar and arm, balls within said passage, a valve stem entering the collar and bearing on said balls, a screw entering said arm and adapted to bear against said balls, substantially as described.

3. The herein described valve stem adjusting device comprising a collar, an inte gral horizontal arm, a continuous passage through said collar and arm, a valve stem entering said collar, balls arranged within said passage, a nut mounted in the outer end of said arm, and a screw passing through said nut and adapted to bear against said balls, substantially as described.

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

STEPHEN S. HALL. Witnesses:

E. OsTERGREN, J. A CHAPMAN.

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