US529981A

US529981A - waggoner

Info

Publication number: US529981A
Authority: US
Publication date: 1894-11-27
Anticipated expiration: 1911-11-27

Description

2 Shets-Sheet 2.

(No ModelL) T. T. WAGGONER.

r REVERSING GEAR AND GOVERNOR.

No. 529,981. Patented N0v.-27, 1894;

WITNESSES. A INVENTOH ATTORNEYS.

m: mums PEYEHQLO, wu'mumm-wnswmn'ron n c UNITED STATES A PATENT OFFICE.

THOMAS T. WAGGONER, OF ST. LOUIS, MISSOURI, ASSIGNOR-OF ONE-HALF TO FENJAMIN F. WAGGONER, OF SAME PLACE.

REVERSlNG-G EAR AND GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 529,981, dated November 2'7, 1894.

App i ati n filed a h 30, 1894- Serial No. 505.715. (No model.) I

To aZZ whom it may concern:

Be it known that I, THOMAS T. WAGGONER, of St. Louis, in the State of Missouri, have invented a new and Improved Reversing-Gear and Governor for Steam-Engines, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved combined reversing gear and governor for steam engines, arranged to permit the operator to conveniently reverse the engine by means of an ordinary reversing lever, and to maintain an automatic and sensitive governor at all times, to control the speed of the engine while the latter is running.

The invention consists principally of a pivoted eccentric carried around on its pivot by the driving shaft of the engine, the said eccentric being connected by the usual strap and rod with the engine valve and the said eccentric being controlled in its swinging motion from weighted levers pivoted on supports attached to the driving shaft.

The invention also consists of certain parts and details, and combinations of the same, as will be hereinafter described and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of the improvement. Fig. 2 is an enlarged transverse section of the same on the line 22 of Fig. 1. Fig. 3 is an enlarged sectional side elevation, showing parts of the device for reversing; and Figs. 4., 5, 6, and 7, are face views of the eccentric and connected parts, showing the various positions of the eccentrics, according to the different rates of speed.

On the driving shaftA of the engine is secured a wheel B, on one face of which are arranged the studs 13 and B forming fulcrums for the bell crank levers C and 0 respectively,

' in Figs. 2, 4, 5, 6 and 7.

On the outer ends of the other arms 0 and (L of the bell crank levers O and O are held the weights 0 and C respectively, adapted to swing toward and from the main driving shaft A, as will be readily understood by reference to Figs. 4, 5', 6, and 7. On the arms 0 and O of the bell crank levers O and C are secured the studs D and D respectively, en-

gaging slotted links E and E respectively,

pivotally connected at E and E respectively,

.with lugs-projecting from one of the faces of a ring eccentric F through the center opening of which passes loosely and eccentrically, the main driving shaft A. The said opening in the eccentric F is sufficiently large to permit the eccentric to swing up and down without touching the said shaft.

From one face of the eccentric F extends an arm F pivotally connected at F with the face of the wheel B carrying the levers G and 0. Thus the arm F and the eccentric F swing from the stud F and as the shaft A revolves, the said eccentric is carried around at its fulcrum with the said shaft A. The eccentric F is engaged at its periphery by the usual eccentric strap connected by an eccentric rod with the valve of the engine, so as to govern the movement of said valve to regulate the admission and exhaust of the steam.

On one face of the eccentric F and between the pivotal connections E and E is arranged a stud F pivotally connected by a link G with the arm H of the bell, crank lever H fulcrumed at I on a bracket I, secured on the shaft A and revolving with the same. The other arm H of the said bell crank lever H is forked and is engaged bya collarJ mounted to slide on and to turn with the main driving shaft A, the said collar being adapted to be shifted longitudinallyon the said shaft by a shifting lever K, preferably made in the shape of a bell crank lever, as shown in Fig. 1, and having its arm K connected with an annular groove in the said collar J.

The bell crank lever K, is fulcrumed at K on a fixed support L, and the arm K of the said bell crank lever is pressed on at its free end and on opposite sides by springs O and O coiled on a rod N pivotally connected with a reversing lever P having the usual hand lever P adapted to engage a notched segment Q to lock the said reversing lever P in any de sired position. 7 I As shown in detail in Fig. 3, the free end of the arm K of the bell crank lever K is pressed on on opposite sides of the pins and 0 fitted to slide in slots N and N 2 respectively, in the rod N, the said pins resting against cups 0 and 0 respectively, on which abut the in nor ends of the springs O and O. The outer ends of the said springs engage cups 0 and 0 respectively, held adjustable bynuts screwing on threaded parts of the rod N.

The operation is as follows: When the several parts are in the position as illustrated in Fig. 2 and the engine is set in motion and the speed increases, then the weights 0 and C of the bell crank levers O and C will swing outwardly, owing to the centrifugal force given to the said levers on the revolving of the wheel B on which the said bell crank levers are fulcrumed. The outward swinging motion of the arms C 0 of the said bell crank levers is limited by the studs D, D engaging the slotted links E, J respectively, so that the eccentric F is shifted relative to the shaft A according to the speed of the engine. A similar movement in the inverse direction takes place in case the speed of the engine decreases below a normal rate of speed, so that the eccentric is again shifted to open the valve of the engine to the fullest extent to admit as much steam as possible, so as to cause the engine to again assume its normal rate of speed. Now, it will be seen that when it is desired to reverse the engine, the operator manipulates the reversing lever P by throwing it either up or down so as to move the rod N in a like direction and thereby causes the corresponding spring 0 or O to act on the arm K of the bell crank lever K to impart a swinging motion to the same. The swinging motion of the bell crank lever K is transmitted by its arm K to the collar J, so that the latter is longitudinally shifted on the main driving shaft A, and as the said collar connects with the bell crank lever H, the latter receives a swinging motion while revolving with the shaft A, so that the link G imparts a swinging motion to the pivoted eccentric F, thereby changing the position of the latter relative to the main driving shaft A; that is, the eccentric center of the eccentric F is thrown on the opposite side of the shaft A, whereby the movement of the valve and consequently that of the engine will be reversed.

It will further be seen that by the operator shifting the reversing lever P only a short distance up or down on the segment Q, he is enabled to apply either of the springs with only such force as would give the desired speed by using different resistance against the centrifugal force of the weights 0 and C in such a manner as to cause the valve to cut off sooner or later as the case may require. It will thus be seen that the device shown and described not only forms a sensitive and accurate governor for regulating the speed of the engine, but it also afiords a means for conveniently reversing the engine while the same is running, and a means of changing the speed by using different notches which changes the spring relative to the governor.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. A device of the class described, com prising an eccentric through which the driving shaft passes, provided with an arm pivoted to a support carried by the shaft, and weighted levers pivoted together and pivotally connected to the body of the eccentric, substantially as described.

2. A device of the class described, comprising a ring shaped eccentric through which the driving shaft passes, the eccentric being provided with an arm pivoted to asupport carried by the shaft, weighted levers pivoted to a support carried by the said shaft and pivotally connected together, and links pivoted to the levers and to the body of the eccentric, substantially as described.

3. A device of the class described, comprising a wheel secured on the main driving shaft of the engine, a ring-shaped eccentric having an arm pivoted on the said wheel, the main driving shaft passing through the center opening of the said eccentric and eccentric thereto, weighted levers pivoted on the said wheel and pivotally connected with each other and with the said eccentric, and slotted links pivotally-connecting the said lovers with the said eccentric, substantially as shown and described.

4. A device of the class described, comprising a wheel secured on the main driving shaft of the engine, a ring-shaped eccentric having an arm pivoted on said wheel, the said shaft passing through the center opening of the said eccentric and eccentric thereto, weighted levers pivoted on the said wheel and pivotally-connected with each other and with the said eccentric, and a reversing lever connected with the said pivoted eccentric to change the position of the latter relative to the driving shaft, substantially as shown and described.

5. A device of the class described, comprising a wheel secured on the main driving shaft of the engine, a ring-shaped eccentric having an arm pivoted to said wheel, said shaft passing through the center opening of the said eccentric and eccentric thereto, weighted levers pivoted on the said wheel and pivotallyconnected with each other and with the said eccentric, a bell crank lever supported from the said driving shaft and rotated with the same, a link pivotally-connecting the said bell crank lever with the said eccentric, and a collar mounted to slide on the said driving shaft, and controlling the movement of the said bell crank lever, substantially as shown and described.

6. A device of the class described, comprising awheel secured on the main driving shaft, a ring-shaped eccentric having an arm pivoted on said wheel, said shaft passing through the center opening in the said eccentric and eccentric thereto, weighted levers pivoted on the said wheel and pivotally-connected with each other and with the said eccentric, a bell crank lever supported from the said driving shaft and rotated with the same, a link pivotally-connecting the said bell crank lever with the said eccentric, a collar mounted to slide on said driving shaft and controlling the movement of the said bellcrank lever, and means, substantially as described, for controlling the sliding movement of the said collar on the said shaft-as and for the purpose specified.

7. Adevice of the class described, comprisinga wheel secured onthe main driving shaft, a ring-shaped eccentric having an arm pivoted on said wheel, said shaft passing through the center opening of the said eccentric and eccentric thereto, weighted levers pivoted on the said wheel and pivotally-connected with each other and with the said eccentric, a bell crank lever supported from the said driving shaft and rotated with the same, a link pivotally-connecting the said bell crank lever with the said eccentric, a collar mounted to slide on the said driving shaft and controlling the movement of the said bell crank lever, a second bell crank lever connected with the said collar, a rod engaging said second bell crank lever, springs pressing on opposite sides of the said bell crank lever, and coiled on the said rod, and a reversing lever pivotally-connected with the said rod, substantially as shown and described.

THOMAS '1. WAGGONER. Witnesses:

F. E. NIESEN, NEPHI MOYLE.