Indicator Valve Post.
We present herewith a cut of R. D. Wood & Co.’s patent indicator valve post, which shows plainly to every 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 screws the tell-tale up or down so proper sign appears at opening or window in head of post. The square spindle slides freely in a square hole extending through the screw. Thus settlement or lifting by frost does not affect tell-tale. There are two tell-tales on opposite sides of the post. Letters are one and one-half inches high, of black enamel, fused on a white ground of porcelain-enamel—very distinct and durable. All the bearings and rubbing surfaces are rust-proof, being bushed with brass. In city streets, the posts can be set at curbstone line, like a hydrant, and thus form no obstruction. A lock-hasp, to seal the valve against tampering, is furnished if desired. This indicator post can be applied to any ordinary make of valve up to 16-inch, and is furnished combined with the valve, or separate, or can be applied to valves already in use. At a recent large fire at Waterbury, Conn., an important water pipe was broken by falling material soon after the commencement of the fire, and that the full supply from the water-works wasted through this break, rendering the city hydrants nearby utterly useless. The break occurred at mid-
INDICATOR VALVE POST
night, and the waste of water was not checked until after daylight the next morning. Many cases can be cited where increased loss has occurred by the breakage of pipes which could not be promptly controlled, or where men, in the excitement of a fire, have attempted to twist the valve stem in the wrong direction.
I his post is adapted for use also on pipes laid into factory yards from public mains. In that case they can be placed at the curbstone line, similar to the post hydrant, and serve as a ready means of shutting off waste should a fire or break occur. Some water-works superintendents have used then: as a device for controlling supplies leading off from public mains into automatic sprinkler systems, thus making it possible to stop a waste, if it be necessary to avoid weakening the hydrant supply in the vicinity. In fact, it would seem that the city gate on such large private supply pipes ought always to be surmounted by some such operating post as this, located at the curbstone line. Fuller information on this subject can be had by applying to R. D. Wood Sc Co., 400 Chestnut street, Philadelphia.