Show i C GOLD GOLI AND ANI X SIL EH Surgical CJ Instrument of Gold Goll Superior I to tn Those ho of r Steel l. l A process s of tempering gold sliver silver and am copper has hns been discovered ered b IJ by Z F. F Vaughn hn of Lo Los n Ang les CalBy Cal Cal By Dy his hi method It H is claimed that tho lie ductile metals are riot not only hardened but a n cutting edge elge Is obtained keen er r and more durable than that hint of steel because of or if the microscopic fineness fine nc ness anI and smoothness imparted to It I. I says the Ihie Scientific American The rhe Inventors Inventor's experiments were devoted de Ie- voted otell chien chiefly to the manufacture of surgical Instruments of oC gold gohl his first production being a hypodermic needle of tempered gold For FO surgical purposes the lie Inventor r claims that thal Instruments of or tempered gold gold are ure superior to lo those of steel because lecause of or their thel ant an lh the case ease with wih which the they may may bt Ia sterilized d. d 11 The antitoxin needle Is about two tv Inches long and the lie needle for Is about three Inches long There l Is no clogging consequently I Itis It Is not hOt Uel necessary ary to use lse wire HC The needles are ens easy of or introduction the lie largest size passing pasing through the lie tissue U- U is- is sue mo more readily than the lie smallest steel needle Ie As the Is entirely aseptic It I leaves heaves no marl mark marl All wearing surfaces surfaces sur sur- ur- ur faces are arc solid gold and 11 ma may be he either elhel 24 karats or oi O any degree degn C of alloy o Tho The secret of or the lie process appears arS to be lie bein heIn in Iii the he solution used In tempering Time The Inventor states that tempered copper Is not subject to that crystal crystal- through vibration Which limits the life of steel that springs o of or tempered tem tern pored copper have hae t h not only 1 as great elasticity and strength as steel springs but ul that owing t to tu the ex extreme ex- ex slow slowness ness of the process of thc they hey 1 retain the spring temper r for a 0 practically In Indefinite In- In definite period It Is expected that a most extensive extensive exten exten- sive use uc of tempered red copper will vili wi he be made for Journal bearings hearIngs Owing to the great grent d density of o the lie metal It I takes an un almost hearing bearing free co corom from rom danger of o overheating and outlasting outlasting out out- lasting either Babbitt metal or 01 brass for fOI the lie purpose Under a microscope a 0 razor manufactured manu manu- by Mr lr Vaughn showed a much smoother edge elge than a steel leel razor anti a te test t proved that hint It held hel I its R edge dge longer on er |