The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 375
king off the stay wireson to bows, etc., to prevent cutting. Two or three stays arerequired where the strain is excessive. Fig. 338.—Method ofattaching Stay Wire 346 PRACTICAL TELEPHONE HANDBOOK Straight and heavy routes should be stayed at intervals,both in a direction at right angles to the… … Fig. 339 way if any one or more poles should break down and both kindshelp to keep the wires in good regulation. Struts.—In cases where a stay cannot conveniently be fixeda strut is used, which consists of a rather shorter pole fixedat an angle to the main one, and on the same side as the pull…
Telephone
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