GB567403A - Improvements in or relating to electrical fuses - Google Patents

Abstract

567,403. Fusible cut-outs. DENNIS, G. P. May 27, 1943, No. 8478. [Class 38 (i)] A bridge carrier fuse of the kind having blade-like contacts 15 on the movable member 13 fitting into U-shaped contacts 10 on the base 1 has in the recess 4 in the U-shaped contact 10 a pin 9 or similar obstruction that co-operates with the projecting end 16 of a U-shaped portion 15a of the blade 15 to prevent accidental displacement of the carrier. The pin 9 is towards one end of the contact 10, the carrier being inserted at the open end, as shown in dotted lines in Fig. 6, and then moved endwise to bring the part 16 beneath the pin. In this position, a recess 26 on the carrier registers with a recess 27 on the base so that a rod or wire can be passed through the aperture so formed and secured by a seal. A transverse baffle 28 on the carrier fits against one wall 1a of a well in the base to prevent arcing between the contacts. The contact 15 is attached to the carrier by a U-shaped clip 21 fitting over the end of a boss 17 into which the contact is recessed, an internally-screwed bush having a square head 20 being passed through the assembly and secured by a screw 18, a square washer 22 being interposed to grip the fuse. wire 23. According to the Provisional Specification, the blade contacts may be slotted or recessed to engage the pins 9.