US64775A - Improvement in steam-engine goveenoes - Google Patents

Description

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J. l?.v THEODORE LANG, OF WASHINGTON,.,DIS'IRICT OFCOLUMBIA.

Laim Parent No. 64,775, daad Mag, 14, 1867-.

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TO ALL WHOM IT MAY. CONCERN:

Be it known that '1, ll). T HEODRE LANG, of the city and county of Washington, and-District of'Colm'nbia, have invented a' new and improved Automatic Cut-Oil for Steam, Ecc., and I do hereby declare that the following is a full, clear,and'exact description thereof, reference being` had to the accompanying drawing, making a part of this specication, in whichlike parts are indicated by lilreletters in the several figures.

The nature of my invention consists in the construction of a governor and valve, and combining them so as to ali'ord immediate.,self-adjustment wherebyto produce upon the steam pistona variable edcctivc pressure, thereby regulating the 'power and speed.

To enable others skilled in theV art to make and use my inventiornI will proceed to describe its construction and operation. In the .drawings- Y Figure 1 is an elevation of my machine.

'Figure 2 shows the balls or weights in the act of adjustment. Figure 3,-'plan and elevation ofvalve and covering.

. It iswell known to allskillcd in' the operations of machinery, particularlystcam, water, andother power,l

that it is desirable to have a governor sensitive to the small and momentary variations of speed of the main driving-shaft. To effect this, propose a contrivance which forcesthe weights of the governor up or down an inclined guide. .This insures the desired movement of thc governor, which exclusively controls a valve to be Vhereafter described. i

`In the drawings, A represents afoundation for the governor. a and '1) represent bevel gears. -I3 is -a sup-v port for the governor. C lis its upright shaft. D is a loose collar, to which elbow-levers dd are pivted at e e.,

To the ends of these levers are' attached the weights E E, either rigidly or by means of springs ff. Fis a colf lar fastened to the shaft C, having on its upper surface friction-rollers, g, on which the loose collar Drests and plays. Above D is another collar, Gr,l secured to sha-ft C. Between these collars F and G the loose collar-D rotates without rising or falling, H H are inclined, curved, slotted guides, which are fastened to a collar, in' secured to shaft C, or they may be fastened directly to shaft C. The 'guides shown are curved and'slotted, and' `in these slots the arms d work or play, these arms having on their lower ends friction-rollers d1, held in place by a'reeess in the arm above, and a eolien-cl2, below, thus count-erecting 4 friction onv the'guidesorlessening it. Springs f are fastened to the ends of the arms cl, supporting the weightsE. The arms d have elbows, d, and 'connected with these are rods z' to transmit motion to 'a sliding collar, 7c, above, embracing shaft C. This collar is provided with a groove, in which the forked lever I gears.' This lever is supported by a standard, J, being pivoted at The vother end of'said lever I is also forked, and embraces a ring, Z, to which yit is pivoted, forming a lind of universal joint. This ring is confined between the thumb-nuts m m, screwed on to a valved'od, K, which operates the valve-cover L. lThe valve-seat M forms an essential part of the steam-chest whiclrcncloses the main valve. The circumference of valve-'seat M is provided with ports q for the entrance'oi` steam, andvits top is closed and exposed to the pressure of'steam. l This valve-cover is not continuous, having. on its sides flanges n n, which may be regulated by set-screws oland checlenuts p. The raising or lowering of the valve cover'L regulates the quantity .of steam entering the ports q ofthe valve-seat M.

The operation is as follows In iig. lithegovernor is shown at rest,l or the weights down, Letting steam on the engine will operate, andthe balls will immediately rise upwards and outwards, thereby regulating the snpply of steam at once by'partially closing the portsg. Fig. 2 shows the ball E in three dierentpositions whilst operating. Srupposingthe ball or balls to be in a desired'position or positions, at a desired speed, repre# sented by E in said figure, the speed being accelerated, the ball will, move up to the position asshown by`E2f. or, if the speed be retarded, the ball or balls will fallor move down, as vshown by El, in both cases operatedA instantly. This is' eccted'by the guides, which, moving faster or slower than thede'siredspeed, will, With the aid ofthe inertia of the balls, force them either up lor down, in either case operating the 'valve instantly, in 'the first case partially closing the ports g, and thesecond exposing more area of the same. The springsf are intended to overcome sudden jars or jerks. The rods. z', transmitting Athe governing power, need not be above the loose collar D, andneed not Abe fastened to the end of the elbow cl3, but may be arranged the same as on common governors, this without altering the nature of myrinvention.. The location of the upper sliding collar l: may be varied to suit the convenience ofthe special machinery to which it is to be adapted; for instance, it may be below the collar D. The collar F, with the frietion-rollers g, may have any other equivalent antifriction devices; also as to the curved slotted guides, which may be solid and inclined. It' solid, friction-rollers above andhelow will keep the arms cl in desirable positions. I have essayed these parts in various forms, and of various detailed devices, but have adopted these, believing them to be the best.

Having thus described my invention, I claim- 1. Tho combination and arrangement of the curved slotted guides H H, collar L, arms d, friction-rollers d1, springs ff, Weights E E, collar F, friction-rollers g g, loose collar D, rods z', collar lc, constructed, arranged, and operating in the manner substantially as Shown and described, and for the purpose set forth.

2. The combination ofthe valve4 M and cover L with the governor, substantially as herein set forth.

i LIP. THEODORE LANG.

Witnesses:

S. S.VFA11NEsTocK, Tiros. A. CoNNoLLY.

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