THE NEW YORK TEST.
KOVEL EXHIBIT FOR THE EMPIRE CITY
Water Works Appliances Under Examination by a Critical Committee.
R. D. WOOD & COMPANY,of Philadelphia, who were represented by Mr. Jesse Garrett, exhibited the Mathews’ patent double valve fire hydrants,whose advantages briefly stated are as follows:
Double security against leakage by the use of two main (or induction) valves, one above the other. The lower valve is so constructed that it acts as a supplemental or auxiliary valve to allow the hydrant to be taken up without shutting off the water from the district. The said valve being entirely separate and disconnected from the upper main valve and its rod,and closing automatically when the upper valve is closed, allows the hydrant to be removed without the use of gates, thus avoiding much extra expense and trouble.
The waste orifice is entirely closed before the water is let into the hydrant, and is not uncovered until after the lower main valve Is closed, effectually preventing any waste of water when the hydrant Is in use or only partially open.
Should the upper ( or ordinarily the main) valve be broken or injured in any way, it can be taken off for repairs for any length of time required, and replaced at leisure, without impairing the action of the hydrant, as the lower valve then becomes the main valve, opening and closing perfectly in the usual manner of operating the hydrant, so that the water need not be shut off for an instant from the district, and the hydrant is always ready for use.
The taking out and replacing of a hydrant is done in precisely the same way as with an ordinary hydrant, the lower or auailiary valve being entirely self-acting, and requiring no manipulation whatever in performing its function of shutting off the water.
To secure protection against all contingencies of frost, their hydrant has an outside cast iron casing which is a mechanical part of the apparatus. Besides serving as a protection against frost, this casing also adds strength in the event of any violent stroke, as of a runaway team, and affords constructional finish, giving not only strength but the appearance thereof.
It allows the removal of every working part of the hydrant, such as valve, valve seat, waste apparatus, etc., without breaking ground or obstruction of the street. It receives the force of the upheaval of the grouad from frost, preventing thereby the breaking of connections —a fruitful source of trouble in many towns where such cases are not used.
It contains a column of dead air around the body of the hydrant which as a non-conductor confines the beat of the INDICATOH VALV* POST lower ground and prevents freezing.
It is a cylinder in one section only, extending above the ground five or six inches, preventing the surface water from flowing in and freezing around the hydrant.
The waste is at the side, automatic self-cleaning, absolutely positive, and no sediment or sand can settle there to obstruct it, nor is any secondary motion necessary to operate it.
The hydrant here described can be made with what is called a double valve attachment, which is shown, allowing the removai of the hydrant proper without shutting off any part of the section and depriving the consumers of the use of water during repairs.
R. D. WOOD k CO.. PHTLADBLeHia,
(tj* Send ter circular.
This hydrant also shows a nozzle independent cut-off,which is especially desirable in the business section of a town, as with thisdevice it is possible to make a second or a third connection without interfering with the stream first in service.ever it is desirable to note at a glance whether a valve is open or closed.
The indicator valve post is a patented device, designed especially for use with water valves connected with fire service in mill and factory yards, etc.
There is also exhibited by the same manufacturers what is called an indicator post for service in factory yards or where-
This post shows plainly to eve-y passer-by whether the valve is open or shut. It avoids the delay of hunting for a flush-gate-box hidden under snow or dirt, or the delay of opening a frozen gate-box cover. Turning the spindle, I) screws the tell-tale up or down,so proper signs appear at opening of windows in head of post. The square spindle, D, slides freely in a square hole extending through a screw, J. Thus settlement or lifting by frost does not affect tell-tale. There are two tell-tales on opposite sides of post.Letters are one and one-half-inch high, of black enamel, fused on a white ground of porcelain-enamel —very distinct and durable. All bearings and rubber surfaces are rust-proof, being brushed with brass. Screw, J, is only part requiring change to fit the various sizes and makes of valves. In city streets the posts can be set at curbstone line like a hydrant, and thus no obstruction results. A lock-hasp, to seal valve against tampering, furnished, if desired, as an extra.This indicator post can be applied to any ordinary make of valve up to sixteen inches, and is furnished combined with valve or separate, or can be applied to valves already in use.
Another appliance is shown for the filling of sprinkling carts without opening the hydrants, which is a fruitful source of their abuse. It is for placing along the street at convenient points and is rnamental in appearance.
The crane post, with hydrant attachment, is fitted with a stock, frost case, and valve; the parts below the ground-line being the same as used for the Mathews’ hydrant; the valve being controled by a rod and nut from the top.
The post is a cheaper device for supplying sprinkling carts where a combined post and drant is not desired.
In the fall of the year the crane attachment can be removed and an ordinary cap, supplied with this hydrant, put in its place for the winter; the hydrant thus closely resembling the the regular Mathews hydrant.
The weight of the crane attachment necessitates a heavier base, hence it cannot be applied to the regular Mathews, hydrant.
R. D. Wood & Co. likewise exhibited cutting-in specials (Dunham patent, 1892), of which they are the sole makers. /
These are made in four-inch to twelve-inch sizes, inclusive, .and especially adapted for use where it is necessary to cut a street main for setting an extra hydrant, the opening of a new street, or for the introduction of any other large service.
Figure I illustrates the method commonly employed for cutting water and gas mains where large tapping machines are not available.
Figure 11 shows very clearly the advantage of the cutting-in special, one end of which is enlarged at the’back of the bell, face of which is slightly oblique to the axis of the special, thus making it possible to insert it readily as shown and necessitating but two joints. At the back of the bell and parallel to its face is a thin projection or rib, which fits the main pipe and forms an excellent stop for the yarn when the special has been brought into its proper position. The special is to be so made as to be adapted to pipes of varying thicknesses and presents no difficulty in “ making up.’
Aside from the advantage of diminished excavations and the saving in joints and labor, the use of the cutting in special will materially lessen the length of time the water must be shut off, as, with the special at hand, the length of pipe to be cut from the main is readily determined and may vary an inch or two without causing trouble; the holding and blocking up of pieces incident to the old method being avoided; and, when complete, the finished work has the fewest possible joints. In smaller cities and towns, and in those portions of large cities where but little risk and inconvenience attends the brief shutting off of the water supply,this cutting-in special offers the least expensive method of making new connections. The cutting-in special may be used as a common special, if necessary,and in ordinary pipe laying,where there is any uncertainty as to the location of side streets or hydrants, it will be cheaper to make the work continuous and “cut in” branches with this special as required. R. D. Wood & Co., make short lengths of pipe with the patented bell and a spigot, or with the patented bell and an ordinary hub end. Where a change in direction either for grade or alignment is not sufficient to require a curved pipe, thoroughly good work can be secured by using one of these short special pipes. Where breaks in a pipe system occur, repairs can be made without a sleeve with the least excavation and with but one extra joint.
In addition to the cuts illustrating the above article, there is given a view of the east end arrangement of hydrants, etc., in the corporation yard. It shows standing on the platform (beginning from the right hand side) Chief Bonner, Water Purveyor North (in the centre), and Col. Gear (on his left), with Chief Engineer Birdsall half hidden by a hydrant post.
(To be eontitiued.)
So efficient is the fire department of Cleveland, Ohio,under Chief Dickinson, that the local board of underwriters has reduced the basis rate in that city from forty to thirty-three cents, which will make a difference of from ten to fifteen per cent, on risks in the congested or business portion of the city.