114 A
INDUSTRIAL
FLEXIBLE TUBING. Hose of innercore and braid for temperatures up to 1700° F . Innercore wall, 0.005 to 0.015 in. thick. Flat ribbon or round wire braid. Titeflex, Inc. (Inconel) 54 SELECTOR AND SHUTOFF VALVES. Series of nonlubricated and shutoff valves for chemical and process service. Handle air, gases, or hot liquids up t o 400° F., and a t nonshock pressures up to 500 lb./sq. in. Available in variety of metals. Nonlubricated rotors of inert graphite. Shutoff valve sizes from 0.5 to 2 in. pipe size, selector series from 0.5 to 1.25 in. Parker Appliance Co. 55 CONTINUOUS MIXER. Mixer handles products from viscosity and density of bread dough to properties of water. Control rate, 5 t o 1000 gal./hr. Stainless and sanitary. Marco Co., I n c . (Roto-Feed) 56 METALLIZING GUN. Metal spray gun powered by electric motor for production line spraying. V20 h.p. constant speed induction motor. Adjustments for gas and air. Available in 25, 50, and 60 cycles. Metallizing Co. of America. (Mogulectric) 57 SLIP-PROOF BELT. Belt with rubber teeth provides strength, flexibility, and noiseless operation. Reinforced with steel cables embedded in oil-resisting synthetic rubber. Speed up to 10,000 ft./min. Sizes to fit machine designer requirements. Suitable for power transmission and synchronization. U. S. Rubber Co. (Gilmer Timing Bell) 58 FORK TRUCK. Truck handles 4000to 8000-lb. loads. Features controller which functions as electric counterpart of automotive automatic gearshift, high pressure hydraulic system, and silicone insulation and lubrication. Collapsed height, 83 in. Lift t o 124 in. Automatic Transportation Co. (Skylift Brawny) 59 PORTABLE WELDER. Arc welder provides 1.5 kw. alternating current a t 115 v., single phase. Trailer or stationary model. 200 a m p . 1 control for a n y desired heat. Harnischfeger Corp. (P&H Model WN-200) 60 BOX FURNACE. Box-type laboratory furnace with temperatures up to 3000° F. top heat and 2500° F . continuous operation. Operation, 230 v., 60 cycle, single phase a.c. 8 kw. capacity \'ariable voltage transformer. Lindberg Engineering Co. (Model G-10. Bulletin 980) 61 STACKING PALLET, structural aluminum alloy unit for handling and stacking loads. 4 tubular columns a t outside corners for supporting tiered loads fold when not in use. Weight, empty, 53 lb. Dimensional load, 48 X 36 in. X 4 ft. high. Capacity, 3000 l b . / unit. Tobey International Co. (StakRak) 62 BOOSTER FANS. Series of heavy-duty fans with propeller diameters 16, 20,
AND ENGINEERING
CHEMISTRY
24, 30, and 36 in. Shafts and motors ball bearing mounted. Vertical 01· horizontal operation. Nonferrous metal blades. Chelsea F a n & Blower Co., Inc. (Series DXB) 63 MIDGET
SOLDERING
IRON.
Sol-
dering iron designed for precision soldering. Lightweight. Length and weight, 8 in. and l 3 / 4 oz. with cord, respectively. Rated a t 25 w., 6 v., and used with 115/6-v. transformer. Driver-Harris Co. (Calrod Midget) 64 IMPACT-CUSHIONING IDLER.
Non-
pneumatic idler for belt conveyors. Rubber rings mounted on idler core afford maximum deflection. Resilient rings decelerate lump. Coodyear Tire & Rubber Co. 65
INSTRUMENTS RUGOSIMETER. Instrument for measuring rugosity or surface roughness of calendered raw rubber sheet or similar samples. Consists of constant-pressure air valve, large needle valve with calibrated scale, manometer, and annulartest plate. Measurement principle is resistance to flow of air between rough surfaces and annular test plate which rests upon surface under test. Precision Scientific Co. 66 D E W POINT APPARATUS,
simple de-
vice for· measuring moisture content of air and gases a t approximately atmospheric pressure. Consists of outer container with inlet and outlet connections and glass window, inner container having highly polished outer surface visible through window, and thermometer. Use of acetone and d r y ice mixture makes possible checking to —76° C. Pittsburgh Lectrodryer Corp. 67 PRECISION INSTRUMENTS.
Midget
meters and allied equipment, smallest D'Arsonval meters, offer accuracy, quality, durability, and dependability of larger meters. 6 basic ranges from 0 t o 100, 200, 500, 1.0, 5.0, and 10 ma. International Instruments, Inc. 68 PLUG-IN SCALE. Scale consists of 6AL5 and 6.16 tube in Higginbotham circuit built in cast aluminum housing measuring 2 X 2 X 2 in., mounted on standard amphenol 9-prong tube-base plug. Useful as micro-second stopclock, production line counting and control equipment, and constant frequency divider in processes where events occur too rapidly t o allow actuation of mechanical register. Tracerlab, Inc. (Duoscale) 69 CO2 INDICATOR. Lightweight, portable indicator, containing no liquids or corrosive agents, determines C 0 2 in less than 1 min. Gas sample drawn from stack and forced into barrel by means of rubber hand pump. Operating principle involves chemical absorption of C 0 2 by dry cartridge. Indicator gage calibrated directly in percentage C 0 2 in sample. Burrell Technical Supply Co. (Bulletin 206) 70
Vol. 39, No. 12
PNEUMATIC TRANSMITTER. Indicator-type instrument with eccentric or concentric scale. Transmitting and receiving mechanisms matched and linear in calibration. 12-in. round-form case. Useful for measurements of flow, static or differential pressure, liquid level, temperature, or humidity. Foxboro Co. (Bulletin 409) 71 ELECTRIC TACHOMETER. Hand-held tachometer weighing 3 lb., designed for accurate and direct readings of linear speeds from 10 to 10,000 ft./min., and of rotational speeds from 100 t o 10,000 r.p.m. Consists of head and indicating unit. N o t damaged by overspeeding. Measures clockwise and counter-clockwise rotation. General Electric Co. (GEA 4895) 72 TIME SWITCH. Self-contained unit operates on 110 v., a.c. Self-starting clock, sweep second hand. Switch dial revolves once a day. Sheet steel case, black (nackle finish. Input, 5-ft. cord with heavy rubber plug. Pilot light on front of case indicates condition of relay. Palo-Myers, Inc. (Palo Switch Sr.) 73 ELECTRONIC TIMER. Repeat cycle timer for process control, life testing, and laboratory use. Independently variable on and off intervals ranging from 0.1 sec. t o 4.0 min. Housed in chassis 3 X 4 X 5 in. Operates on 115 v., 60 cycles. Timer for 115 v., d.c. operation available; relay contacts with 2 transfers rated for 10 amp. at 115 v., a.c. provided. G. C Wilson & Co. 74 MEASURING INSTRUMENTS.
Con-
tinuous flew point recorders and recording controllers. Main feature is measuring element, a perforated metal cylinder 9 in. in length and 2 in. iri diameter. Pneumatic or electric control systems. Recorders require no refrigeration, water- supply, or air circulating system. Thermal bull) measures temperature, which is transmitted t o recording instrument and read on chart in degrees of dew point temperature. Foxboro Co. (Bulletin 407) 75 SAMPLE CHANGER AND PREAMPLI-
FIER. Lead shielded manual sample changer- and preamplifier·. Permits fast and accurate counting of radioactive samples. Consists of: 2 in. lead shield, outside dimensions, l l 5 / s i n . in height X 6V2 in. in diameter; preamplifier circuit; tube; and stainless steel sample holder. Geometrical reproducibility within 0 . 1 % . Tracerlab, I n c . (SC9A) 76 AUTOMATIC T I T R A T O R . Dual automatic recording device for plotting automatic titration curves. Provides permanent and complete curve record; one sample titrated while second is prepared for analysis. Aqueous and nonaqueous media. Silver, antimony, platinum, calomel, or glass electrodes. Consists of reagent-feeding device and recording potentiometer. 200 w. power. Continuous duty. Change in 115 v., a.c. line results in d.c. voltage change of 0 . 1 % . Precision Scientific Co. (Precision-Dow Recordomatic) 77
