Nov. 12, 1946. D. T. SHAW 2,411,007 MEANS FOR FASTENING CONDUCTORS TO INSULATORSv Filed March 9, 1943 .7 27211701" ?mgaar?iabf. Patented Nov. 12, 1946 2,411,007 UNITEDISTATES PATENT OFFICE 2,411,007 MEANS FOR FASTENING CONDUCTQRS TO INSULATORS Douglas Thomas Shaw, Montreal, Quebec, Canada Application March 9, 1943, Serial No. 478,537 In Canada February 27., 1943 1 2 Claims. (Cl. 174—172) 2 This invention relates to fasteners for in formed of relatively stiff but spring material, sulators of the type in which it is desired to such as copper-plated steel wire. The opposite retain a wire in the slotted end thereof, and the ends l4. and i5 of this retaining member are objects of the invention are generally to im bent in opposite directions so that when the re prove and simplify the construction of such a taining member is in the groove and is turned device and to enable it to be rapidly applied with in one direction the outer member I4 will ride out the necessity of the ordinary tie wire. over the wire 12 and securely lock it in position. In the ordinary type of insulator used for sup In the same way if the direction of motion of porting transmission or communication wires from suitable supports it is common to employ 10 the retaining member is reversed, the wire I2 will be released. insulators having slotted ends with peripheral grooves on the exterior meeting the base of the slots, in which grooves tie wires are retained. The fastening of these tie wires in position oc cupies a considerable amount of labour, and the 15 material used is more than is necessary to ac The method of inserting and retaining the wire l2 in the slot in the insulator may now be ex plained. The wire is ?rst placed in the trans verse slot 10 of the insulating member in the position shown in Figure 4. Upon turning the retaining ring B in a clockwise direction the in complish the purpose desired. sulating wire at one end of the slot NJ will be According to the present invention a simple engaged under the retaining member. Upon form of fastener is provided in the form of an open ring designed to ?t in the peripheral groove 20 continuing the clockwise motion of the retain ping member the end ill will engage the wire l2 and having the ends bent in opposite directions at the opposite side of the slot Ill and ride above so that when turned it will ride over the wire it. The retaining member may be then turned which is to be retained in the slot, all as here until the complete revolution is completed, inafter more fully set forth and described in whereupon the lower member 15 will abut the the accompanying speci?cation and drawing. 25 wire l2 and retain it in position as shown in In the drawing Figure 3. To remove the ring B it is turned Figure 1 is a perspective view showing the in the opposite direction to the position shown retaining ring in position. in Fig. 5 when the wire 82 will be released. Figure 2 is a perspective view of the retaining I claim: ring. 30 1. The combination with an insulating mem Figure 3 is a perspective view similar to Fig ber having a peripheral end groove and a trans ure 1 taken from the opposite side. verse slot in which a wire is adapted to be in Figure 4 is a perspective view showing the serted, of a fastening member comprising an ring in position before it is turned to engage the open-ended retaining ring adapted to ?t in the wire to be retained. Figure 5 is a similar perspective view to Fig 35 groove and to be retained therein by the spring of the metal, at least one end of the spring being ure 4 showing another position of the ring. bent away from the plane of the ring at an angle Figure 6 is a vertical sectional elevation taken and adapted to ride overva wire inserted in the through the slot in the insulator. slot. Figure '7 is a plan view. 40 2. Fastener means comprising an open ring of In the drawing like characters of reference spring metal having one end extended there indicate corresponding parts in all the ?gures. from at a tangent and bent in one direction out Referring to the drawing, A indicates an in of the plane of the ring, the other end being ex sulator of any suitable material, such as por celain, and, as shown, frusto-conical in shape. 45 tended therefrom at a tangent and bent out of said plane in the opposite direction, and a sup The outer end of the insulator is provided with port member for the ring said member having an a transverse slot l0 having a convex bottom ll outer groove to receive the ring rotatably there along which is designed to lie the wire 12, which in and a transverse slot to receive a wire there is to be supported and retained in position by the insulator. 13 indicates an annular periph 50 in, one bent end of the ring being adapted when the latter is rotated in its groove, to ride over eral groove formed around the exterior of the the wire in the slot and the other bent end of the insulator crossing the lower end of the slot H]. ring forming a stop to engage the wire. B indicates an open retaining ring conveniently DOUGLAS THOMAS SHAW.