First, separate all the cards by suit. Line up each suit in this order: Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K. Next stack the packets on top of each other. Starting with the top card, deal off 21 cards, making sure that when you lay them down t... Read more of The Self-Arranging Deck at Card Trick.caInformational Site Network Informational
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Steel Making

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

Annealing
There is no mystery or secret about the proper annealing of d...

The Thermo-couple
With the application of the thermo-couple, the measurement of...

Carbon-steel Forgings
Low-stressed, carbon-steel forgings include such parts as car...

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

Pyrometers
Armor plate makers sometimes use the copper ball or Siemens' ...

Connecting Rods
The material used for all connecting rods on the Liberty engi...

Conclusions
Martien was probably never a serious contender for the honor ...

Impact Tests
Impact tests are of considerable importance as an indication ...

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

Drop Forging Dies
The kind of steel used in the die of course influences the he...

Heating
Although it is possible to work steels cold, to an extent de...

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...



Brown Automatic Signaling Pyrometer






Category: PYROMETRY AND PYROMETERS

In large heat-treating plants it has been customary to maintain
an operator at a central pyrometer, and by colored electric lights
at the furnaces, signal whether the temperatures are correct or
not. It is common practice to locate three lights above each
furnace-red, white and green. The red light burns when the temperature
is too low, the white light when the temperature is within certain
limits--for example, 20 deg.F. of the correct temperature--and the
green light when the temperature is too high.



Instruments to operate the lights automatically have been devised and
one made by Brown is shown in Fig. 130. The same form of instrument is
used for this purpose to automatically control furnace temperatures,
and the pointer is depressed at intervals of every 10 sec. on contacts
corresponding to the red, white and green lights.





Next: An Automatic Temperature Control Pyrometer

Previous: Compensating Leads



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