US72071A - Improvement in hidkants - Google Patents

Description

@glatten tatca @anni @ffice JOI-IN e. MURDOCK;4 OF CINCINNATI, OHIO. Letters .Patent No. 72,071, dated December 16,1867.

IMPROVEMENT IN HYDRANTS.

'ro WHOM IT MAY cONeEnN:

Be it known that I, JOHN G. MURDOCK, of Cincinnati, Hamilton county,- Ohio, have. invented a new and useful Improvement in Hydrants; and I do hcreby declare the following to be a fullclear, and exactY description thereof, reference being had to the accompanying drawings, making part of this specification'. j

I 'ihe first and principal subject of my invention `is an edicient form of hydrant-valve,rin which the plunger is so constructed that it may be readily withdrawn for inspection or repairs, and again replaced without any nicety of adjustment or care in so doing. The object is also to so arrange the various parts as to facilitate their manufacture and reducetheir cost. My invention is-especially designed for a self-wasting hydrant, whose discharge-pipe constitutes the valverod,'and shuts against the pressure of the main. In those forms 4of the ordinary hydrantwalve in which the plunger and valve are adapted to be Withdrawn for repairs without digging up the case or stock, and'in which the packing is so adjusted that it will cover or uncover the waste aperture-in the act of opening or closing the valve, it has been customary to provide the valve with a cylindrical chamber, polished interiorly, to enable the packed periphery of the plunger to work smoothly and yet tightly within it, so as to permit no leakage of water around it while the valve is'opcn and the water flowing. In actual practice with thisform of hydrant, it has been found dicult to construct the plunger -so as to have it move freely `in the cup or chamber," and at the same time to insure'its being perfectly `water-tight, besides which, the' packing being on the outside of the plunger, there is no protection from` injury in the act of replacing in the hydrant; whereas, in my valve the plunger is at once readily presented to the guide or shell,` which need be only roughly finished, all the packing being confined to the interior of the plunger, and there thoroughly protected. The plunger` may be thrust into the hydrant, and will immediately iind itsproper position without any possible injury to the packing.

The second part of my invention relaties to a. form of deliverypipe adapted for use as a hose-plug or streetwasher.V In the common street-washer or hose-box the water passes up from the valve below to the dischargecoupling or hose-connection at top by means ofthe ordinary pipe, while the valve or cock is operated by a separate rod or key; but in my improved street-washer the conducting-pipe also performs the functions of the operating-rod, andthe water finds escape through a passage formed around the yoke of the cam, thus greatly increasing the eliciency of this form of hydrants, and reducing the cost of manufacture. In thc accompanying drawingsv l i I' Figure 1 is an axial section of the valve and its appurtenances, the valve proper being closed und the waste-way being open.

Figure 2 is a similar section of the same parts, with the` valve proper open and the wuste-way closed.

Figure 3 is a partially-sectionized side elevation, with my improved water-way for strcet-wasl1ers.

Screwed fast to the bottom of the case Orstock A isy the supply-pipe B, having its exterior smoothly polished, to enter the internally-packed piston, and its upper end forming anelevated seat for the valve proper, to be presently described. The pipe B has one or more shallow channels, D, forming waste-ways, and is surrounded by a guide-cup,4 C, having a flaring rim or margin, e', and one or more ventages, c. E is the hollow piston or plunger, having secured to its 'interior an annular packingor sleeve, F, consisting of a number of rings of leather or other suitable material, secured byfmcans of a'gland or nut, G'r. The plunger E is connected to the discharge-pipe K by means of a hollow cylindrical coupling, H, which is screwed fast to said pipe, and `has a screw-threaded periphery, to receive the said plunger, and an adjustable collar or back nut, J. The plunger E, being shifted higher or lower upon the coupling H, is secured to any particular adjustment by means oft`le-\ adjustable shoulder J. The uses of this adjustability will be presently explained.

The waste-ways D are of such length as that, when the plunger is upon its scat, the upper endsof the channel just appear above thc sleeve, while the lower ends extend fer enough down to permit the escape of the water into the bottom of the guide-cup C, and out through the ventages c.

The coupling H has orifices, L, around its lower portion, for the ascent of the water when the hydrant is @pom-and is closed at bottom by a plate, L, having screwed or otherwise attached to its under side a disk of gum or leather, I, which is the valve proper, and which, in the depressed position of the plunger,becomes seated upon the top ot' the pipe B, and thus closes the hydrant.

l The vertical adjustebility of the plunger with respect to the valve saves a, great amount of' labor that would benecessrjy to nicely adapt these parts and the operating-oem sons to properly oci-act. It also enables the .provision at will of e. larger or smallerwztste-way, or so setting of the parts as to enable the liydrent to close without opening the Waste-Way at all, when desired for summer use, thus saving the water and preventing unnecessary saturation of' the ground. x v i Fig. 8 s :t vertical section and elevation of o. modifi-cation of my invention, designed for a. streetnvasher or hose-plug, in which theusual stock 'is-displaced by o east-iron case. In this form the discharge-pipe is made to enter :in annular pipe or passage, cztlled'by me the hollow catrn-yoke-Lfand which enclosos an oblong open- A ing, t, Within .which works the operetingc1m M-upon n horizontal shaft, N; having o liead, Q', by which said cam is rotated for opening or closing the valve of the plug.

The operation of opening and closing the valve is effected by applying a wrench lto the square of the com shaft, or a. lever to theV openings therein. The acts of opening and closing the valve are the some as tliose in my patent grunted, 26th Moy', 1863, Nm 38,694. The instant the plungeris lifted from its seat, the packing F Y covers' the top ot the waste-channel, which continuesclosed as long as the plug remains open. When tlievulve is closed, the descent of the peeking again' uncovers tire ehennel, land permits the contents of the' dischargem lpipeto pass oli". v f i y l I do not @Online myself to the precise shape or style llere selected, as the same is susoeptiblo oflvjarious modifications; for example, a cheep form lofny improvement may be Without any guide-cup, the glandG being yflawed downward so as. to leed the plunger into thepipe: B, or the ofiice of the guideoup may be discharged by two or more-lugs or standards rising .from tlie lbottom of' the case.

I claim herein as new, and of my invention-- f 1. The hollow plunger E, having tlie interior valve l-ztnd sleeve-packing ll", Whiclrrespectively close and encircle tlie supply and waste-pipe B, as and for the purpose sot forth.

2. In combination with tlxe'supply and. Waste-pipe B anclvalve I, I claim tlie' verticullyladjustable hollow plunger E, for the object stated; v y

3. The adjustable shoulder or look-nut J, in combination and arrangement witli the elements B, D, anE.

4. Theor-rangement of internallypaeked plunger which surrounds and packs e, vertical supply-pipe, B,

having one or more Weste-ways, D, and being enolosedwv'ith'in and guided by a. cup, l, substantially'es described.

In testimony ot' which invention, 'Ihereun-to set my hond.

JOHN G. MURDOCK.

Witnesses Gino. H'. Kmqm, JAMES H. LAYM'AN.

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