Search results
Results from the WOW.Com Content Network
The internal works of a mechanical dial indicator are similar to the precision clockworks of a mechanical wristwatch, employing a rack and pinion gear to read the probe position, instead of a pendulum escapement to read time. The side of the indicator probe shaft is cut with teeth to provide the rack gear.
On the rotary dial, the digits are arranged in a circular layout, with one finger hole in the finger wheel for each digit. For dialing a digit, the wheel is rotated against spring tension with one finger positioned in the corresponding hole, pulling the wheel with the finger to a stop position given by a mechanical barrier, the finger stop.
The ball-and-disk integrator is a key component of many advanced mechanical computers. Through simple mechanical means, it performs continual integration of the value of an input. Typical uses were the measurement of area or volume of material in industrial settings, range-keeping systems on ships, and tachometric bombsights.
Initial pushbutton designs employed mechanical switches, so that each button activated certain combinations of capacitors and inductors of an oscillator, while later versions used semiconductor logic chips to synthesize the frequencies. The tones are decoded by the receiver to determine the keys pressed by the user.
The mechanical nature of these relays generally limited the speed of operation, the pulsing rate, to ten pulses per second. The specifications of the Bell System in the US required service personnel to adjust dials in customer stations to a precision of 9.5 to 10.5 pulses per second (PPS), but the tolerance of the switching equipment was ...
American Society of Mechanical Engineers – The American Society of Mechanical Engineers (ASME) is a professional association that, in its own words, "promotes the art, science, and practice of multidisciplinary engineering and allied sciences around the globe" via "continuing education, training and professional development, codes and ...
In order to make it fit on the platform, all of the mechanical calculator portions of the sight were removed. Instead, the bomb aimer had to use manual slide rule calculators to find the drift and bombing angles, and then set the bombsight to these values. The bombsight was unable to quickly adapt to changes in direction or altitude, and in ...
Both were dialled in on large wheels positioned on either end of the long rectangular cabinet. The top of the cabinet was a perspex window that displayed the calculation. The altitude wheel was connected to the main part of the calculator, a large metal cylinder marked with lines showing the time it would take for the bombs to reach the surface.