US1707264A - Fluid-pressure control for cylinder cocks - Google Patents

Description

April 2, 1929. E. G. GROSS 1,707,264

FLUID PRESSURE CONTROL FOR CYLINDER COCKS Filed NOV- 1925 2 Sheets-Sheet l Vent n1 B servou' I Edward 6! Gross,

April 2, 1929. E. G.- GROSS 7 1,707,264 I FLUID PRESSURE CONTROL 1 6 CYLINDER cocKS Filed Nov. 4, 1925 2 Sheets-Sheet 2 flan/mu 6f Gross,

Patented Apr. 2, 1929.

EDWARD G. GROSE, E IVIUIIIGQMERY, ALABAMA.

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Application filed November The invention has for an ohjectto effect jinn provenients in devices for the control of cyl inder cocks of locoino'tivesby an air or steam line and valve inthe cab. llt relates particularly to that type in which a reciprocal piston operates a lever connected to the ordinary c .mlercocl: by link or otherwis-ie. l an .unportant aim of pus invention to silo fy the connections required between the engine parts and the cylinder of the cock co. o device. A furt er important aim is to provide :l/(lfiilt't) of his kind which is adapted to be niannfac l at a lowcost with extremely simple pairs, and which will be liable in a mininnf '11 degree to damage and reriation. One of the roreinost purposes t the invention is to embody a device of this kind which will also eliminate access of dust and grit to the working parts.

Additional objects, advantages and features of invention reside in the construction, arrangement and combination of parts as may l we more readily iuidorstood from the following drweription and the accompanying drawings, wherein,

liinure l a side elevation of a locomotive cylinder with my control. device applied thereto and connected to the cocks.

Figure 2 is an ei'ilarg'ed side elevation of the control device detached.

Figure 3 is a longitudinal sectional view thereof.

Figure 4-, is a cross section on the line 4-4: of Figure 2.

Figure 5 a front end vice.

Figure 6 is a rear elevation thereof.

Figure '7 is a bottom view of the device.

Figure 8 is a detail of the piston detached.

There is illustrated a locomotive cylinder 10 and a portion of a lower cross head guide 11, upon the under side of which there is mounted a cylinder casting or case 12,11aving a smoothly finished bore therein. The cylinder body has an integral head 13 closing one end thereof, in which there is cored a longitudinal passage 14; or air duct, which leads into a transversely bored ear or lug 15 formed on the heat 13, and interiorly threaded to receive a plug" 16 atone side, an air pipe terminal 17 at the other, leading from atwoway valve 18 of .any usual construction, formally indicated in the drawings, and which is adapted to form a connection between the terminal 17 and train pipe or reservoir of the engine when in one position, and

elevation of the do 4, 193 35. Serial. no. 66,368.

in another position to vent air from the pipe 17 to the a osphere. Various valves suit able "for lllln use are well known, cennnerciat y, and illustration of the details is therefore considered not nccesstny.

The end of the cylinder bore opposite the head 13 opens flush through a machined face on the-end of the castingand is closed by a cap 19, the cap and the cylinder casting; being flaring-ed, and secured togetherby bolts 20; 'llhe cdinder casting is also formed with a longitudinally projecting foot lug; 21 at the upper side adjacent the head 14, and two lateral :lbot lugs fill 3 adjacent the ()illlt'ltllfill end of the cylinder, the three lugs being adapted to set so ugly upon a planlforin sin-face. ill; the lower side of the cylinder midway of the len .1 ot the here in the main misting, an opening 23 is formed beside which transversely extending flanges 52% are :lorn'icd joined integrally to car." 525 at the sides, the

cars and flanges together forming a rectangular opening, in which there is set with a snug lit the hub 25 of a lever having a short arm 26 extending inwardly and providing; a knob 2''? of cylindrical. forin arranged on an axis transversely of the cylinder and parallel to the pivot of the'lever adapted to oscillate in a vertical axial plane in the cylinder 12. This lever has also a long arm 28 extending outwardly and curving slightly toward the cap 19, a link 29 connecting this lever to the usual rod or other element as at 30 ordinarily provided on cylinder cocks under the engine cylinder for their operation. The huh receives thercthrough a bolt secured in the ears 25.

Eilidahlc in the bore of the cylinder there is a piston 31, having heads 32 and 33, the first adjacent the head 13 of the cylinder, While the other is presented toward the open end of the cylinder and the cap 19. The heads 32 and 33 are connected by two longitudinal bars 34, between which there are cross bars 35 spaced and smoothly finished to snugly engage the knob 2'? so that the. piston will be reeiprocatcd hy oscillation of the lover. The piston heads 32 and 33 may be both similar, smoothly finished to slide freely in the cylinder 12, but the head 32 is provided with packing; rings 33 whereby to confine compressed air or steam between this head and the head 13 of the cylinder 19..

It should be noted that the cap it) is interiorly of somewhat smaller diameter than the bore of the cylinder 12, and set in this the piston 31.

cap there is a helical spring 36, of a strength sufficient to operate the piston and lever and move the cylinder cocks from. closed to open the hub by means of plates 41 secured thereon by screws 42 engaged in the flanges 2 1.

It Will be seen that the device is adapted to be put in place and connected with the cylinder cocks on locomotives: of ordinary construction with a nnnnnuin of diiiiculty,

' and the nature of the construction is such that the device will not be readily damaged, nor deteriorate GXCESSIVGlY, as will e readily un dcrstood,

In use, it will be seen that it is only necessary to admit air to the cylinder 12 to close the cocks; andwhen the engineers valve is moved properly, it will relieve air pressure in the feed pipe 17 and the spring 31- will function to return the device to initial position, opening the cylinder cocks again. The device is thereby suitable to use when air prcssure fails, by manipulation of the arm 28 of the lever, or admission of steam to the 'i'eed line 17.

I claim:

In a motor device of the character described, a case having an opening, and a lever pivoted in the opening, an enlargement eoncentric with the pivot "formed on said lever and insertable through said opening, an enlargement on the case at opposite sides of the opening and having inclined fares at the outer side convergent outwardly toward the opening, clamping plates respect irely mounted over said tacos, means to press the plates toward said faces, and packing pieces adjustable between the plates and said faces to bear upon the said enlargement on the lever and to close the spaces at respective sides of the lever in the opening.

In testimony whereof I aliix my signature.

EDlVARD G. G ROSS.

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