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  Item Reference: KCLCAL-1861-1862-509

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510 APPLIED SCIENCES Give the chief points to be attended to in drawing up Specification for Railway Bars Give the methods of Tempering Steel and Case-hardening Iron Two wheels are made to revolve by the contact of teeth precisely as they would by the friction of their pitch circles what condition respecting the form of the teeth is necessary that they may do so Name the curves which fulfil this condition and which are generally adopted for forming the teeth of wheels cast iron Spur Wheel and Pinion are in gear together the Spur Wheel is 12 inches diameter the Pinion is inches diameter at the pitch circle the diametral pitch is Ā£ an inch- Set out two of the teeth of the Pinion with Epicycloidal curves -What number of teeth would you put into the smallest pinion in the train of this pitch and show how you would calculate the breaking weight of one of the teeth How is the shape of the teeth of Bevil Wheels set out 10 What is the correct outline of the beam of double-acting Steam Engine Why would you adopt this form 11 The carriage of Travelling Frame is to lift tons the span of the traveller is 16 feet-the carriage 13 supported on two beams of Fir side by side each foot deep What breadth would you make each of the beams so as just to carry times the greatest load which could come upon the traveller 12 Supposing the span-of the Travelling Frame to be such that the beams must be trussed bow would you truss them State your reasons for using the form of truss which you propose to adopt and show the nature of the strains upon the different parts of the Travelling Frame caused by the weight placed in different positions 13 Give the breaking weight on the centre of Cast Iron Girder of the annexed section
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