Patent GB-753445-A (GB)
Title: Mounting arrangements for wires and components of electrical circuits
Inventor: WRIGHT ESMOND PHILIP GOODWIN
IPC: H05K7/06
Filed: 1952-01-09
Abstract: 753,445. Binding-posts ; supports for circuit components. STANDARD TELEPHONES & CABLES, Ltd. Jan. 2, 1953 [Jan. 9, 1952], No. 688/52. Class 38 (1). A wire terminal such as the end of a wireended component is attached to a strip or panel of thermoplastic insulating material by passing the end of the wire into or through the material while the latter is soft. The wire end may be heated by the application of a soldering iron and pressed into the material or a pilot hole may be made by a hot wire or pin and the wire end pressed therein while the material is still soft. Fig. 3 shows a component 1 with the wire-ends twisted to form loops 3, 3<SP>1</SP> and portions 4, 4<SP>1</SP> extending at right-angles to the component. The ends 4, 4<SP>1</SP> are attached to strips 5, 5<SP>1</SP> as above, the strips being held between bars 6, 6<SP>1</SP>, Fig. 6. A number of components are shown mounted between the strips 5, 51, the loops 3, 31 serving for the attachment of other connections 14 ... 17. The wire ends 4, 41 may be flattened and roughened. Again the ends 4, 4<SP>1</SP> may extend through the insulating material and be formed with a loop on both sides (Fig. 7, not shown). Fig. 8 shows an alternative method of attaching a connection to the loop 3 wherein the loop with a wire 18 inserted therein is embedded in the thermoplastic material with or without previous soldering. The loop 3 may be formed on the underside of the material after passing the wire end therethrough, which loop, together with a connecting wire may be drawn back into the material (Fig. 9, not shown). The strip 5 in Fig. 6 may be replaced by a panel of thermoplastic material on one or both sides of which circuit information may be printed or engraved (Figs. 10, 11, 25, not shown). A separate sheet bearing the circuit information may be superposed on and spaced from the panel (Fig. 26, not shown). In another method of making a connection to the wire end of a component, Fig. 15, the end 4 has a connecting- wire 23 twisted round it prior to embedding in the strip 5, a coating of conducting material such as cold solder, or paint or enamel, or both being previously applied to the twisted wires. The wire end 4 may be formed into a hook and drawn through the thermoplastic material by a hooked tool which has been heated and pushed through the material. Where a connecting wire is twisted round the end 4 as in Fig. 15, both wires may be formed into a hook. After drawing through the thermoplastic material the hook may be left to form a connecting point or the hook or the twisted ends of two wires which may be pushed through the material may be cut off and solder applied to the wire ends, e.g. by dipping. To form terminals for the attachment of wire ends of components, loops may be formed in a wire and pushed or pulled through the material as shown in Fig. 33. Fig. 28 shows a mounting arrangement for a number of thermoplastic panels 20, the panels being pivoted side-by-side on a mounting plate 34. A diagram plate may be mounted in front of plate 34 and the free ends of panels 20 may carry mounting strips for valves or other large components. In another mounting arrangement, Fig. 30, panels 20 are mounted on one or both sides of a framework comprising H or I-section uprights tied together by horizontal members 39, the panels being held in position by stiles 38.