US1257918A - Speed-responsive device. - Google Patents

Description

- W. G. NOACK.-

SPEED RESPONSIVE DEVICE.

APPLICATION min ma. 2 0. 1911,.

1,257,918. Patented Feb. 26,1918.

2 SHEETS-SHEET lj mm d@ M Mvg/Dua /f/s ATTORNEYS W. Gf. NOACK. SPEED RESPONSIVE DEVICE. APPLICATION HLED MAR. 2o. 1911.

INVENTOR.

y w. e. /vo/fc/f M5 ATTORNEY sTATEs PATENT j l wams. noacx, or sroox'roir, camonma, assreivonA 'ro macros. morons comarnmor nmcm, cannomin, a conronarron or camronma.

mom DEVICE.

applicaties aina mnh ao, 1917. serial no. 155,990. v,

To all whom it may concern.'

Be it known that I, Wanm G.- Noax, a citizen of the United States, and a resident of Stockton, San Joaquin county, State of California, have invented a. certain new and useful Speed-Responsive Device, of which the following is a specification.

The invention relates to speed responsive devices and particularly to devices which are operated b variations in centrifugal force produced y variations in speed of rotation, and is particularly adapted to governors forcontrolling the speed of internal combustion en ines.

An object o the inventionis to provide a governor which will not hunt.

Another object of the in vention is to provide a governor which is simple in construction and cheap to manufacture.

A further object of the invention is to provide a governor which is readily attachable to a rotating element of an internal combustion engine.

The invention possesses other advantageous features,`some of which, with the foregoing, will be set forth at length 1n the following description, where I shall outline in full, that form of the invention which I have selected for illustration in the drawings accompanying and forming art of the present specification. In sal-d rawings I have shown one embodiment of my invention and several modifications thereof, but

it is to be understood that the invention, as expressed in the succeeding claims, may be embodied in a plurality of forms.

Referring to said drawings:

Figure 1 is a side elevation of an mternal combustion engine equipped with the device of my invention.

Fig. 2 is a vertical section of the governor shown in Fig. 1.

Fig. 3 is a section of one of the governor elements.

Fi 4 is an end view of the element shown in Fig. 3, showing some of the balls.

fied types of governors.

The speed responsive device of my invention is particularly adapted to be used as a governor for internal combustion engines. The governor comprises two rotatable plates or elements 2-3 spaced apart'at their centers and ap roachingeach other at the peripher an a plura ity; .Ofloose balls 4 arrange between the plates, which, upon rotation ofthe plates, areforced toward the periphery by centrifu al force, thereby varying the spacing of t e plates. One of the plates is fixed against .longitudinal movement, so that the other plate is moved lon itudinally by the radial displacement of t e balls and the movable plate is connected to the engine throttle lever 5. I have found that a governor so constructed has a marked tendency to hunt and I provide a governor which overcomes this tendency.

The governor is usually mounted on a suitable shaft 6, such as the magneto or pump shaft, which rotates in time with they engine crank shaft. The plate 2 is secured Patented Feb. 26, 1918.

to the shaft by a compression coupling 7 and surrounding the shaft, is a s ring 9 bearing against the plate and held 1n compression b the sleeve 12 which is secured to the sha t by the compression coupling 13. The plate 3 is therefore continuously loaded and resists longitudinal movement.

The plates-2 and 3 are spaced apart from each other ad'acent the shaft, to form a scat for the ba s 4 and approach each other adjacent the periphery, so that as the balls are forced outward the plate 3 is moved along the shaft. The faces of both lates may beinclined to a plane perpendicu ar to the axis of -the shaft as shown in Fig. 2, or only-one plate may be inclined, as shown in Figs; 5 and 6. The plate 3 is provided with :a neck 14 surrounding the shaft and merg-l 4ing in a smooth curve vsame radius as the balls, with the face of the plate to form a seat for the balls when Figs. 5 and 6 are vertical sections of modie preferably of the a plurality of radially disposed, broad, shallow grooves 15 in which the balls roll as they move radially. The grooves serve to hold the balls properly spaced at all times and prevent them from bunching at the periphery and thereby throwing thedevice out of balance and disturbing its governing relation. The grooves may be in one plate or in both, as desired.

Connected to the neck 8 of the longitudinally movable plate 3 is a nipple 16, which is surrounded by a ring 17, mounted on balls 18, the races for the balls being formed in the nipple and the ring. The ring, therefore, does not rotate. Connected to-the ring 17, preferably by a ball and socket joint, is a lever 19, suitably fulcrumed, which is connected at its other end to the throttle lever 5, by the link 21. The lever 19 is preferably fulcrumed on an eccentrically mounted pivot 22 formed on the lever 23 which is provided with a control rod 24. By varying the position of the lever 23, the position of the throttle valve with relation to the position of the plate 3 may be varied.

In order to prevent hunting, I provide means for producing a drag 0n the action of the governor, and this I accomplish by retarding the passage of air into and out of the space between the plates, as their relative position varies. In the construction shown in Fig. 2, the plate 3 is provided at its periphery with a cylindrical flange 25 concentric with the axis of rotation and arallel thereto, and the plate 2 is provide on its periphery with a shoulder or thickened portion 26, having a face parallel to and concentric with the ilange. The flange and the shoulder are spaced apart a short distance, approximately s of an inch, to permit the passage of air to and from the chamber formed between the plates. The small area of the passage retards the flow of air andl prevents the governor from hunting.

In Fig. 5 I have shown` a governor designed for mounting on a vertical shaft, in which the weight of the movable plate 3 serves as the loading for the plate. In such construction the plate 2 has a flat surface and is rovided with the flange 25, while the movab e plate 3 is provided with the shoulder 26.

In Fig. 6, I have shown a construction similar to that of Fig. 5, with the exception that the :face of the plate 3 is formed on the curve of a parabola, thereby providing a diii'erent displacement of the plate 3 at a given speed, than is provided with the conical-faced plates of Figs. 3 and 5. In Fig. 6, the flange or apron 25 is formed 0n the plate 3, and the shoulder on plate 2.

I claim:

1. A speed responsive device, comprising two plates inclosing a chamber of decreasing height outwardly, balls in said chamber adapted to be moved outwardly by centrifugal force to move said plates apart and increase the volume of the chamber, and means for retarding the inflow of air to said chamber, whereby the increase in volp ume of said chamber is controlled to retard the action of said device.

2. A speed responsive device, comprising two circular rotatable plates Vmclosng an annular chamber of decreasing height outwardly, means in the chamber operative by variations in the speed of rotation of the plates for varying the volume of the chamber and means for retarding the flow of air into and out of the chamber, whereby the increase and decrease of volume of said chamber are controlled to retard the action of said device.

3. A speed responsive device, comprising two rotatable plates spaced apart adjacent their centers and approaching each other gradually toward their edges, means between the plates operative by variations in the speed of rotation of the plates for varying the spacing of the plates and means for retarding the relative movement of the plates to effect a drag upon the action of said device, including a flange on one of said plates disposed parallel to the axis of rotation thereof, and a shoulder on the other plate lying closely adjacent to said flange.

4c. A speed responsive device, comprising two rotatable plates spaced apart adjacent their centers and approaching each other gradually toward their edges, one of said plates being movable axially with respect to the other, means for opposing such movement, means between the plates adapted t0 be moved outward by centrifugal force to produce such movement and means controlling the emission and admission of air from and to the space between said plates for retarding such movement and the action of said device.

5. A speed responsive device, comprising a shaft, two circular rotatable plates mounted on said shaft, one of said plates being laterally movable and the adjacent surfaces of the plates being spaced apart at the shaft and gradually approaching each other toward the periphery, a plurality of balls arranged between said lates, a peripheral flange on one of said p ates concentric with and parallel to the axis of the shaft and a shoulder on the other plate lying contiguous to said flange, whereby the passage of air into and out of the space between said plates is controlled to retard the movement of said laterally movable plate and the action of said device.

6. A speed responsive device, comprising a'shaft, a circular plate mounted on said shaft, a compression coupling engaging said second plate and an abutment secured to the shaft and bearing against the other end of 10 the spring.

In testimony whereof, I have hereunto set my hand at Stockton, California, this 10th -day of March, 1917.

WALTER G. NQACK.

Images