A NEW COUPLING.
THE new coupling manufactured by W. J. Clark and company, Salem, O., is a very clever device and if it operates in actual service in the manner claimed for it, a revolution in hose connecting may be looked for. In a very neat little book describing this new appliance, The manufacturers say: “The question of hose couplings has received a large share of attention and consequent advancement. Besides the improved screw coupling now in service a number of
quicker working ones has been introduced, and pre eminent among them all is the patent coupling recently invented by Joseph S. Blackburn. It is a time saving appliance that merits the approval of firemen wherever it has been tried, and which, owing to the remarkably short time required to operate it, is significantly called the ‘Quick as Wink’ Hose Coupling. In offering this n£w appliance for public favor we are mindful of the prejudice that may exist in favor of the long used and apparently satisfactory screw coupling, and we therefore solicit the privilege of sending our representative to make a water pressure exhibit of the ‘ Quick as Wink ’ Coupling to demonstrate its merits. We will furnish these couplings for trial by hose companies or fire committees for any reasonable length of time and allow them to be subjected to the severest possible tests at our own risk and expense, with the understanding, however, that if the trial is satisfactory, our Coupling will be adopted and a purchase made.”
The claims made for the Coupling are many, among the principal being: It is easily operated by one man. No spanner or other tool required, except a small flat key for disconnecting. The key is small and neat pocket size. Each fireman can have one. Connections are made or broken “ Quick as a Wink.” No delay on account of “crossed threads,” as sometimes happens with screw couplings. It will not leak. The greater the pressure the more absolutely certain it is that the connection is reliably secure and will not let go under the most trying conditions until opened with a key. Although the connection is absolutely water tight, the two parts are at the some time loose and perfectly free to swivel upon each other. Connections can be made or broken while the water pressure is on. A quarter turn with the key opens the jaws and breaks the connection. It is attached to the hose in the usual way (by expansion rings), and the water way is smooth and unobstructed—the same as in the improved screw couplings. It avoids the delays from battered threads or missing gaskets, which are common to screw couplings. It is not inoperative, like a screw coupling, if somewhat flattened by accident. Inexperienced persons can operate it quickly and successfully in an emergency. Mud and slush do not render it inoperative. It is simple in construction, has no delicate parts to get out cf order, and will stand rough usage or severe strains. The illustrations below show the appliance and methods of using it. Figures 1 and 2 show the two parts of the Coupling. They are each attached to the hose by expansion rings, which leave an unobstructed water-way. Fig. 2 carries two skeleton clamping jaws that hinge t open outwards upon two substanialtrunnions, and are controlled by a tia j steel spring. Fig. 1 has a square shouldered groove to receive the outer ends of the. spring controlled jaws. To effect a connection the two parts are brought together and the head of Fig. 1 will force the jaws outward in opposite directions against the tension of the spring, and the moment the grooved portion of Fig. 1 is opposite the outer ends of the jaws, they will close around the head of Fig. 1, and the inwardly projecting edges of the outer ends of the jaws will engage with the shouldered groove of Fig. 1, and the two parts, Fig. 1 and Fig. 2 will be securely coupled, and cannot be drawn apart until the jaws are again opened outwardly by means of a key. The connection is made tight by a rubber tube shown inside the jaws in Fig. 2; when the two parts are brought together, this rubber tube will have entered the bore of Fig. 1, and the joint between the two will be perfectly covered. When the water enters the coupling the pressure expands the rubber tube against the inner surface or bore of Fig. 1 and makes a water tight joint, notwithstanding the end play “ that is provided between the two parts, Fig. 1 and Fig. 2, and the freedom with which they may swivel upon each Other. Increased water pressure only increases the contact of the rubber against the inner face or bore of Fig. 1 and adds to the impossibility of a leak. The spring is used merely to close the jaws and to keep them closed while here is no water pressure. When the water pressure is on, the jaws will not open (except bv means of the key), even if there was no spring there, and increased water pressure only makes the jaws hold more securely, no matter how much the hose may be thrown about. The coupling will i rough handling without becoming inoperative, and cad be quickly replaced in case of accident. Mud, slush,or ice may be easily removed from groove in Fig. 1 and the rubber tube is self cleaning as it enters the bore of Fig. 1, ample room being provided for the escape of such accuriiulations through the skeleton jaws. Fig. 3 shows the coupling made and the key for disconnecting. To disconnect, the flat key is placed in the slot between the two jaws and given a quarter turn to open them, when Fig. 1, can be withdrawn. The key is so small, it can be carried by a fireman In his pocket. Fig. 4 shows the fire plug point and fire plug cap and means of disconnecting. A few illustrations are herewith given us showing the coupling in actual operation and best methods of connecting It will well repay those interested to write for one of the neat books containing a full description and instructions for using the “Quick as a Wink” coupling^