Norris's Hand-book for Locomotive Engineers and Machinists ... |
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Page 168
... fulcrum . According to the relative positions of the weight , power , and fulcrum , on the lever , it is said to be of three kinds , viz . when the fulcrum is somewhere be- twixt the weight and power , it is of the first kind ; when the ...
... fulcrum . According to the relative positions of the weight , power , and fulcrum , on the lever , it is said to be of three kinds , viz . when the fulcrum is somewhere be- twixt the weight and power , it is of the first kind ; when the ...
Page 169
... fulcrum , then the lever will be at rest , or in equilibrio ; but if one of these products be greater than the other , the lever will turn round the fulcrum in the direc- tion of that side whose product is the greater . 4. In all the ...
... fulcrum , then the lever will be at rest , or in equilibrio ; but if one of these products be greater than the other , the lever will turn round the fulcrum in the direc- tion of that side whose product is the greater . 4. In all the ...
Page 170
... fulcrum be to the sum of the products of all the powers × their distances from the fulcrum , the lever will be at rest ; if not , it will turn round the fulcrum in the direc- tion of that side whose products are greatest . 11. In these ...
... fulcrum be to the sum of the products of all the powers × their distances from the fulcrum , the lever will be at rest ; if not , it will turn round the fulcrum in the direc- tion of that side whose products are greatest . 11. In these ...
Page 171
... fulcrum ? Here , by No. 6 , 3 x 12 = 9 weight . 4 In a lever of the third kind the weight is 60 , and its distance 12 , and the power acts at a distance of 60 × 12 9 from the fulcrum ; therefore , by No. 5 , 80 the power required . 9 If ...
... fulcrum ? Here , by No. 6 , 3 x 12 = 9 weight . 4 In a lever of the third kind the weight is 60 , and its distance 12 , and the power acts at a distance of 60 × 12 9 from the fulcrum ; therefore , by No. 5 , 80 the power required . 9 If ...
Page 180
... fulcrum is at one end , and the power or the action of the steam between that end and the movable weight , ( see fig . 2 , where F is the ful- crum , A is the point where the steam acts , and W the movable weight , ) some have taken A ...
... fulcrum is at one end , and the power or the action of the steam between that end and the movable weight , ( see fig . 2 , where F is the ful- crum , A is the point where the steam acts , and W the movable weight , ) some have taken A ...
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Common terms and phrases
abscissa Atmospheric Railway avoirdupois axle blast-pipe boiler brass centre circle circular segments Circum circumference cloth coke conjugate connecting-rod copper crank Cube Root cubic feet cubic foot cubic inch curve cylinder cylinder in inches Dauphiny Decimal or Reciprocal diame diameter distance driving wheels eccentric-rod equal EXAMPLE.-Required find the Area find the Solidity fire-box Fraction or Numb friction Frustum fulcrum fulcrum and valve Gallons gauge give the solidity Height of Arc horses Hyperbola iron Length of Arc leverage locomotive engine metallic mile morocco motion multiply the sum North Shields ordinate Ounces Parabola pipes piston piston-rod plates Pounds pressure quotient radius rails Railway resistance revolving axis RULE RULE.-Multiply RULE.-To find screw segment shaft side smoke-box spindle square inch Square Root steam stroke subtract thickness tion tons trapezium tubes valve velocity Volume whole weight yards Zone
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