. Electric railway gazette . s plug is slightly tapered and is driven down, prefera-bly by screw pressure. As its surface has been amal-gamated it also is rust-proof. It is locked in place by theburr c, made by a blunt chisel, forcing the metal of railinto the space left by the fillet b on the plug. This plas-tic plug bond is not designed for new work, as it does notgive the same result as the cork type of the plastic bond,which, it is claimed, makes an electrically continuous the expense of tearing up the pavement and remov-ing angle plates makes the new type preferable except onlarg
. Electric railway gazette . s plug is slightly tapered and is driven down, prefera-bly by screw pressure. As its surface has been amal-gamated it also is rust-proof. It is locked in place by theburr c, made by a blunt chisel, forcing the metal of railinto the space left by the fillet b on the plug. This plas-tic plug bond is not designed for new work, as it does notgive the same result as the cork type of the plastic bond,which, it is claimed, makes an electrically continuous the expense of tearing up the pavement and remov-ing angle plates makes the new type preferable except onlarge roads where it is desired to obtain the full con-ductivity of the rails. With a drill driven by a motorconnected with the trolley wire, and with the proper tem-plates to secure proper location and slant and depth ofhole, the plastic plug bond can be easily and rapidlyapplied even while the road is in Teck Bond. The Teck bond was designed by the Technic Elec-trical Works, of Philadelphia, to afford a permanently. TECK BOND. secure electrical connection at small labor cost. ■ Thedevice consists of a copper wire or wedge with itsend bent at right angles. The bent portion is providedwith a slot through which a pointed steel key or wedge isdriven. The key is slightly larger than the slot, and itsaction is to force the copper over the edge of the holesinto close contact with the rails, and to spread the ends sothat the bond is practically riveted into place. This device is claimed to be very reliable, and can bevery quickly applied. A large number of bonds of this type have been in usefor some time, and has, it is claimed, given good satisfac- 374 ELECTRIC RAILWAY GAZETTE. Vol. XIII. No. 20. tion. To meet the demand for increased contact with therail the Improved Teck bond has been designed. Thisconsists of a copper rod half round in section, with its endsbent so as to bring the flat sides close together. A keyor wedge is driven between the reversed end and the mainbo
Size: 1602px × 1560px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1895
