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Simple Devices For Plant Safety These five shop-designed and shop-made safety gadgets ore simp/e, effective, easily dupli cated. Photos on these pages show how they're made, what they con do in your plant `No Smoking' Easily portable "no smoking" i|,, j-j* mediately commands attention by bli0$ ing a warning wherever, it i| plac&iH This unit has a best that is 6% in.'jjj diameter, 6 in. high. Plant personnel can read the word* on the 24-in.*hj|}j' triangular wooden sign from any dite&< tion. Black letters on yellow back'/ ground convey the message. # Red blinker light mounted on top op the wooden sign is a 1000-v betieoat'^ bulb covered with a red glass globe. blinks on and ad approximately 60 timi* a minute, runs on a "B" battery and!' 1000-v stepup transformer contained iythe base. Entire unit weighs about lb. i* .`Vi in. high. Keeps Plug Out of Socket W This lockout device prevents putting ex tension-cord plug into an electrical receptacle while maintenance man is working on the equipment. Device is both easy to make and easy to use. It Is particularly useful on electrical office equipment, power tools and laboratory apparatus where locking twitches are < not provided. Cuts Out Match Carrying If amoking it permissible in specified ureas of the. plant, but matches should not be carried in others, these simple lighters cut down on safety infractions. One type is patterned alter the auto mobile dashboard lighter. The other uaea standard electrical fittings and eas ily removable hcoting elements. Main tenance costs are low for both models. Guards Butterfly Switches Metal guard gives double protection to the butterfly type ol eJectricsJ switch. It protects against overhead teaka or falling objects. It also prevents anyone from starting the equipment accidentally by leaning on the switch or inadvert ently coming in contact with the lever. Eliminates Flying Chips This guard for a star drill consists of a suction cup from a "plumber's helper" ond two cellulose sponges, fastened to the hit with a spring collar and set screw. The springs are in aeclions and ure adjusted to fit any length -bit. Sponges con be dampened with water to Kelt* prevent fires and keep down dust, without using wet rag or hose. Power i thanks io t du Pont de Nemours & Co, Inc, Petroleum Chemicals Division for the material (or this oiltclc. PUNT OPERATION AND MAINTENANCE SECTION 1 More Disconnects-Less Down Time Today's electrical designers are gening good results with quick-disconnecting designs In switchgear, motor-control centera, etc. Users appreciate being able to quickly pul) an electrical component out of place for maintenance, trouble shooting or simply disconnection. This is a big safety feature, and it promotea better maintenance. Operating men ean adopt the aame idea for email motors, solenoid valves, etc. Use twist-type disconnects that can - be easily inserted by cutting Into the feed. When trouble shows up, disconnect the balky unit, slip a new or repaired one into position, and resume production. The faulty de vice can be repaired back In the maintenance shop. This' generally adds up to a better repair job than if all the work wera done hurriedly in the field. 'J RNOVtMBEB 1933 PIANT OPERATION AND MAINTENANCE SECTION