The operative mechanic, and British machinist |
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Page xv
... frame - work of moderate scant- ling . A is a crank connected with the piston - rod , which , as it works in the cylinder horizontally , cannot be seen . B is the cylinder , into which steam is admitted from the boiler , by means of the ...
... frame - work of moderate scant- ling . A is a crank connected with the piston - rod , which , as it works in the cylinder horizontally , cannot be seen . B is the cylinder , into which steam is admitted from the boiler , by means of the ...
Page 57
... frame of wood made to stand in , ( and to rest my hands upon , ) and with a girdle and chain lifted an iron cylinder , made use of to roll the garden , sustaining it easily when once it was up . Some noblemen and gentlemen who were ...
... frame of wood made to stand in , ( and to rest my hands upon , ) and with a girdle and chain lifted an iron cylinder , made use of to roll the garden , sustaining it easily when once it was up . Some noblemen and gentlemen who were ...
Page 74
... frames B , B , B , B , exactly an equal distance apart from each other ; and it must also be observed in piercing or drilling the joint pin - holes in the circle EE , that they correspond with the holes made in the arm frames B , B , B ...
... frames B , B , B , B , exactly an equal distance apart from each other ; and it must also be observed in piercing or drilling the joint pin - holes in the circle EE , that they correspond with the holes made in the arm frames B , B , B ...
Page 75
... frame of open buckets , placed round the rim of a vertical wheel , to receive the water from a spout placed over it , so that the buckets on the one side shall be always loaded , while those on the opposite side are empty . The loaded ...
... frame of open buckets , placed round the rim of a vertical wheel , to receive the water from a spout placed over it , so that the buckets on the one side shall be always loaded , while those on the opposite side are empty . The loaded ...
Page 98
... frame , being prevented by the folding - gates , which pass from one end to the other of the wheel . In this way the wheel and frame are buoyed up by a head of four feet ; and the mill works with a head of 5 or 5 feet . When the tide is ...
... frame , being prevented by the folding - gates , which pass from one end to the other of the wheel . In this way the wheel and frame are buoyed up by a head of four feet ; and the mill works with a head of 5 or 5 feet . When the tide is ...
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The Operative Mechanic, and British Machinist: Being a Practical Display of ... No preview available - 2020 |
Common terms and phrases
angle aperture applied arms axis axle barrel beam boiler bolt bottom brass bucket cast-iron centre circle circumference cistern cock cog-wheel column communication condenser construction contrivance crank cylinder descend described diameter edge effect engine epicycloid equal fall fastened feet fixed flaunch flax float-boards force four frame friction frustrum furnace geer groove gudgeon hemp hole horizontal inches iron leather length lever lower machine machinery manner means metal mill mill-stone minute motion moved Parcieux pass perpendicular piece pinion pipe piston placed plate pounds pounds weight pressure prevent pulley pump quantity of water raised ratchet-wheel represented in fig roller rope round sails screw shaft shuttle side slider sliding space spindle square steam steam-engine stone stroke sufficient surface teeth thickness treadle tube turned upper valve velocity vertical vessel water-wheel weft weight wheel wind wire yarn
Popular passages
Page 680 - BXD' 125. A PROPORTION is an equality of ratios. Four magnitudes are in proportion, when the ratio of the first to the second is the same as that of the third to the fourth.
Page 182 - I condense the steam, by causing it to pass in contact with metallic substances, while water is applied to the opposite side. Fourthly, to discharge the engine of the water employed to condense the steam, I suspend a column of water in a tube or vessel constructed for that purpose, on the principles of the barometer, the upper end having open communication with the steam vessels, and the lower end being immersed in a vessel of water. Fifthly, to discharge the air which enters the steam vessels with...
Page 595 - ... any error, however small, when multiplied, becomes of considerable magnitude, and even the difference of an inch in the last riser, will not only have a bad effect to the eye, but will be apt to confuse persons not thinking of any such irregularity. In order to try the steps properly by the story rod, if you have not a level surface to work from, the better way will be, to lay two rods on boards, and level their top surface to that of the floor ; place one of these rods a little within the string,...
Page 699 - Pyramid. RULE. — Multiply the sum of the perimeters of the two ends by the slant height or side of the frustum, and half the product will be the surface required.
Page 230 - The buckets have a lateral orifice, to receive and to discharge the water. The axis of this wheel is embraced by four small beams, crossing each other at right angles, tapering at the extremities, and forming eight little arms. This wheel is near the centre of the horse-walk, contiguous to the vertical axis, into the top of which the...
Page 713 - BRAZING, the soldering or joining two pieces of iron together, by means of thin plates of brass melted between the pieces that are to be joined. If the work be very fine, as when two leaves of a broken saw are to be brazed together...
Page 234 - Q be opened, the water and air rush out together with prodigious violence, and the drops of water are changed into hail or lumps of ice. It is a sight usually shown to strangers, who are desired to hold their hats to receive the blasts of air : the ice comes out with such violence as frequently to pierce the hat like a pistol bullet.
Page 491 - The wheel E performs one revolution in an hour ; the wheel NN, which is turned by the axis of the wheel E, must likewise make only one revolution in the same time; and the minute-hand is fixed to the socket of this w heel.
Page 117 - ... to a fourth number, which will be the velocity of the water. Therefore the velocity of the water may be always found by multiplying 32.174, by the square root of the height of the fall, and dividing that product by the square root...
Page 226 - it is a curious fact in the rupture of amorphous stones, that pyramids are formed, having for their base the upper side of the cube next the lever, the action of which displaces the sides of the cubes, precisely as if a wedge had operated between them.