TY - JOUR
AU - Ltd., Research and Control Instruments
AB - NEW INSTRUMENTS. MATERIALS AND TOOLS 100 and 200” C. Because of these properties, the material shafts mounted in oil-retaining bearings, have friction clutches is stated to be superior to steel for tool-shank material. between motors and cam-shaft, and a cam-shaft spindle Steel shanks tend to “chatter” (i.e.’ vibrate so that the end projecting beyond the end-plate with a hand for resetting to of the tool strikes the boring material intermittently), but, zero. A wide variety of input voltages, with 50-60 c/s a.c. it is claimed, with this material, it does not occur. Further, or even d.c. is catered for; and the number of separate tips are often made of tungsten carbide, which has approxi- switches can be as many as twelve. mately the Sam2 coefficient of expansion as this material; The time intervals can be obtained using cam-shaft speeds thus thermal strains set up due to heating of the tip in working from l’rev in 5 sec to 1 rev in 28 days. One of the switches are eliminated, and cracking is prevented. Finally, the can be wired to the motor circuit thus switching off the motor material does not anneal, even at high temperatures, so that at a 
TI - Liquid nitrogen purity gauge
JO - Journal of Scientific Instruments
DO - 10.1088/0950-7671/37/11/420
DA - 1960-11-01
UR - https://www.deepdyve.com/lp/iop-publishing/liquid-nitrogen-purity-gauge-H0oSb95TWR
SP - 443
VL - 37
IS - 11
DP - DeepDyve
ER -