US2203874A

US2203874A - Governor

Info

Publication number: US2203874A
Application number: US299081A
Authority: US
Inventors: Robert L Ohls
Original assignee: Reed Roller Bit Co
Current assignee: Reed Roller Bit Co
Priority date: 1939-10-12
Filing date: 1939-10-12
Publication date: 1940-06-11
Anticipated expiration: 1957-06-11

Description

R. L. OHLS GOVERNOR Filed Oct. l2, 1939 Patented June 11, 1940 GOVERNOR Robert L. Ohls, Houston, Tex., assigner to Reed Roller Bit Company, tion of Texas Houston, Tex., a corpora- Application 0ctober712, 1939, Serial No. 299,081

9 Claims.

This invention relates in general to governors, and more particularly to that type of governor which is adapted to control the speed of a rotary engine, or other engine having a rotating part. I

The general object of this invention is to provide a governor which will accurately control the speed of such an engine within very small limits, and which Will be substantially free from trouble due to breakdowns, wear, etc.

"Other objects and advantages will become aprparent from the following description, taken in connection with the accompanying drawing, it being understood that the same set forth cerf- ,tain embodiments of this invention, by way of illustration and example only, and that the same are not to be taken by way of limitation.

`In the drawing: f l

Fig. `l is a vertical cross section view throug a governor constructed in accordance with this `I` in the engine shown is `provided with a bracket 13,` to which is bolted, by means of bolts `4, one `of theheads 5, of the governor Vstructure to which this invention applies.

Secured to this head `5, and extending in a direction away from :the `housing l, is a hollow member 6, which for-ms the housing for the governor. Thismember `is secured to the head `5 `by means of cap screw l, or by any other simi- `lar `suitable means. l i

'I'he opposite end `of thehousing `Ii is `provided with internal threads adapted to receive a plug member 8, which has a skirt extending a sub-l stantial distance along the inner wall of the housing 6, as shown at 9, and which is locked at position by means of a lock nut I0. The inner wall of this skirt 9 is machined to form a substantially cylindrical opening, and is provided at one portion of its length with lateral openings "I I, which communicate with an annular chamber orspace I2, this space I2, in turn, being in communication with the input line I3.

(Cl. 137-458) h Mounted` for rotation, and for longitudinal movement within the cylindrical opening of the skirt 9, is a piston-like element I4, having a stem I5, extending toward the head 5, and on this stem I5, there are mounted a plurality of propeller blades I6, these blades being of such shape that when rotated Within a fluid, they will tend to move in a longitudinal direction with respect to the housing 6. i

The left hand end of the extension I5, as seen in Figure 1, is formed with a square cross section, shown more in detail in Figure 3 of the drawing, and is designated by the numeral Il. This portion is adapted to fit within the socket member I8 of` similar cross section, and to bear against a spring I9, which tends at all times to urge the piston I4 and its connected parts toward the right hand end of the device as seen i in Figure 1. I

The socket I8 is carried bymeans of a threaded connection on a short length of shaft 20, which is secured by a threaded connection 2l to the end ofthe power shaft 2 of the engine, and which passes through a stufling box 22 in the head 5.` This stuiiing box 22 is provided with conventional packing element 23, and with a gland nut 24 of conventional design.

`In operation, it will beseen that the power iluid to be supplied to the engine will enter the governor device f through the pipe I3, `and the `openings II. It will then flow toward the left, as shownin Figure 1, and will flow out through a pipe 25, to the intake of the engine. As the speed `of the engine increases, the speed of rotation of the

shafts

2 and 20 will increase, and hence the speed of rotation of the piston I4 will increase. `lnasrnuch as the propeller blades I6 are` carried on the piston I4, the speed of these propeller blades will likewise increase, and there `will be a tendency for the propeller blades, the piston I4, and the associated parts to move toward the-left, as the speed of the engine increases. This will be due not only to the flow of power fluid past the propeller blades, but also to the increased rotation of the propeller blades, and. the reaction of these blades on the power fluid.

As the piston I4 is moved toward` the left, it will be seen that `it will begin to cover up the ports II, and thus reduce the ow of power fluid to the engine I. And, naturally, as the flow of power fluid to the engine is reduced, the speed of the engine will be reduced, and the reaction of the propeller blades `upon the power uid within the governor will likewise be reduced. A

Cil

the exception that the flow of the power fluid will have no effect upon the propeller blades I6'.

Instead, the entire effect upon thesepropeller blades will be caused by the reaction yof these blades due to their rotation, and this rotation will take place in a portion of the power fluid where that fluid is static. v

Having described my invention, I claim: Y l

1. In a governor for an engine having a rotary part and actuated .by a power fluid, a propeller located in a space adapted to contain sucln vpower fluid and. connected .to said rotary part for actuation thereby, a valve connected to said propeller forl controllingv the flow of power fluid to said engine, means normallymaintaining said propeller in position to hold `said valve open and yieldable under the reaction of said propeller in operation against the power fluid to permit said propeller to shift and move said valve` toward closed position.

l2. In a governor for an engine actuated by a power fluid, a propeller located in a space adapted to contain such `powerfluid and connected to said engine for actuationthereby, a Lvalve connected .to said propeller for controlling the flow of power fluid to the engine, means normally maintaining said propeller in a position to hold said valve: open and yieldable under the reaction of said propeller in operation against the vpower fluid, to permit said ypropeller to shift and move said valve toward closed position.

3. In a governor for an engine adapted to beactuated by a power fluid, means for causing Ya.

reaction against a body'of the power fluid depending upon the speed of the engine, said means: being shiftable under the influence `of such reaction, and a normally open valvefor `controlling the flow of power fluid to the engine, said valve being connected to said means and shiftable therewith by such reaction toward closed position. 4. In a governor for an engine having a rotary part and actuated by a power fluid, a screw propeller 'located in a space adapted to contain such power fluid and connected to said rotary part for rotation thereby, said screw propeller being axially shiftable,r a valve connected to said propeller for controlling the flow of power fluid to the engine, means normally maintaining said propeller in suchl axial positon as to'hold -said valve open, `said means being yieldableA under 4the reaction of said propeller in operation against the power fluid to permit said propeller to shift axially and move said valves toward closed position. Y

5. In a governor for an engineA adapted -to be actuated by a power fluid, a propeller locatedin `a space adapted to contain such power fluid and connected to said engine for actuation thereby, a piston valve connected to said propeller and shiftable for controlling the flow of power fluid to the engine, means normally maintaining said propeller in position to hold said piston valve open, said means being yieldable under the reactionv of said propeller in operation against the y power fluidto permit said propeller to shift and move said valve toward closed position.

6. In a governor for an engine having a rotary 'part and actuated by a power fluid, a screw propeller located in a space adapted to contain such power fluid connected to said rotary part for actuation therebyy a rotatable piston valve directlymconnected to said propeller and axially .shiftablefor controlling the flow of power fluid to the engine, means normally maintaining said propeller in such axial position as to hold said valve in open position, said means being yieldable under the reaction of said propeller inroperation against the power fluid to permit said propeller :to shift and move ;said rotatable piston valve :toward closed position.

'7. In a governor for an engine adapted to be actuated by power fluid, a propeller located in the lpath of flow of said power fluid as it flows toward the engine, said propeller being connected to said .engine for actuationk thereby, a valve connected vtol said propeller for controlling the flow of the lpower fluid to the engine, means for normally maintaining said propeller in position. to` hold said valve open, said means being yieldable under the reaction of said propeller in operation against the flowing powerjfluid to permit said propeller to shift and move said valve toward closed position.

8. In a governor for an engine adapted to be actuated by a power fluid, a propeller locatedY in .the path of flow' of said power fluid toward said engine for actuation thereby, a valve connected to said propeller for controlling the flow of the power fluid to said engine, means normally maintaining said propeller iny positon to hold said valve open, said means being yieldable under the reaction of said propeller in operation against the power fluid to permit such propeller to shift andmove said valve toward closed position, said propeller being so located in the path of flow of said power fluid that the flow of said power fluid against said propeller will tend to move said pro-v peller in a direction to close said valve.

9. In a governor for an engine adapted to be actuated by a power fluid, a propeller located in a space adapted to contain such power fluid vbut out of the direct path of flow thereof, said propeller being connected to said engine for actuation thereby, a valve connected to said propeller for controlling the flow of power fluid to the engine, means normally maintaining said 'propeller in position to hold said valve open, said means being yieldable under the reaction of said propeller in operation against the power fluid to permit the propeller to shift and move said valve toward closed position.

. ROBERT L. oHLs.