Improvements in and relating to assemblies of a printed circuit panel and a holder for a thermionic valve, plug or other electrical device having projecting terminal prongs

摘要

855,406. Holders for thermionic valves. CARR FASTENER CO. Ltd. Feb. 17, 1959 [Feb. 18, 1958], No. 5286/58. Class 38 (1) A valve-holder comprises contacts 9 consisting of strips 10 with lateral wings bent to form bifureated contact portions, the main part of reach strip 13 constituting a connecting tag and the end 19 adjacent the contact portion being berit out of the plane of the strip to form a locating tag which is trapped between.insulating plates 5, 6 forming the body of the holder and held together by a central hollow, rivet 23. The holder is mounted on the rear face of a printed circuit panel by. passing the tags 13 through valve-pin-receiving holes 24 'in the panel and bending them over the front face of the panel into contact with the printed circuit 3 to which they may be secured by dip-soldering. The holder body may be formed as a single moulding (Fig. 4, not shown), with recesses for the contacts apertured at the bottom to receive the valve pins and the locating tags which are bent over the rear face of the body to retain the contacts in position. Alternatively the locating tags may have lugs bent out therefrom 'and which snap over the rear face of the body.