Appletons' Cyclopædia of Applied Mechanics: A Dictionary of Mechanical Engineering and the Mechanical Arts, Volume 1Park Benjamin D. Appleton, 1878 |
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Page 46
... hole , that the rod may serve as a key for attaching the ball to either the gun or syringe . In the inside of the ball is fixed a valve and spring , which gives way to the admission of the air , but upon its emission comes close up to ...
... hole , that the rod may serve as a key for attaching the ball to either the gun or syringe . In the inside of the ball is fixed a valve and spring , which gives way to the admission of the air , but upon its emission comes close up to ...
Page 56
... hole of the barrel , the rising liquid raises the float , which detaches the button from its stop and rings the ... holes d on to the bearing . ALCARAZA . A vessel of porous earthenware , used for cooling the contained liquid by ...
... hole of the barrel , the rising liquid raises the float , which detaches the button from its stop and rings the ... holes d on to the bearing . ALCARAZA . A vessel of porous earthenware , used for cooling the contained liquid by ...
Page 107
... hole is made by placing the edge transverse to the fibres of the wood , and pushing the brad - awl into the material , turning it to and fro by a reciprocatory motion . The core is not brought out as by other boring instruments , but ...
... hole is made by placing the edge transverse to the fibres of the wood , and pushing the brad - awl into the material , turning it to and fro by a reciprocatory motion . The core is not brought out as by other boring instruments , but ...
Page 127
... hole at the head . The utmost capacity of this tool in practice is to punch a hole three- quarters of an inch in diameter through an iron plate five - eighths of an inch thick . BEARINGS . By the term " bearings " is meant the surfaces ...
... hole at the head . The utmost capacity of this tool in practice is to punch a hole three- quarters of an inch in diameter through an iron plate five - eighths of an inch thick . BEARINGS . By the term " bearings " is meant the surfaces ...
Page 139
... hole , and removes the wood almost as a solid core . The shell - bits are in very general use ; and when made very small , they are used for boring the holes in some brushes . Fig . 324 , the spoon - bit , is generally bent up at the ...
... hole , and removes the wood almost as a solid core . The shell - bits are in very general use ; and when made very small , they are used for boring the holes in some brushes . Fig . 324 , the spoon - bit , is generally bent up at the ...
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Common terms and phrases
alloy angle antimony apparatus aqueduct armature arrangement attached battery belt bismuth boiler bottom brakes bricks carbon carried cast-iron cent centre chain chimney coil compressed connected consists construction copper crank crucibles cylinder depth disk distance drill dynamometer edge electric electromotive force employed engine equal fire-tube boiler flues force frame furnace gear gold Gramme machine heat hole horizontal horse-power inches in diameter iron joists latter length lever lower machine magnet means mercury metal motion mould moved operation passes piece pinion pipe piston placed plate position pound pressure proportion pulley quantity ratchet-wheel represented in Fig resistance revolutions revolutions per minute revolving rollers screw shaft shown in Fig side spindle square inch steam steel stroke surface temperature thickness timber tion treenails tube upper valve velocity vertical vessel water-tube boiler weight wheel width wire wrought-iron zinc
Popular passages
Page 509 - Every body continues in a state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by a force impressed upon it.
Page 541 - Light, Heat, Electricity, Magnetism, Motion, and Chemicalaffinity, are all convertible material affections ; assuming either as the cause, one of the others will be the effect : thus heat may be said to produce electricity, electricity to produce heat; magnetism to produce electricity, electricity magnetism ; and so of the rest.
Page 61 - Zinc may be added to pot-metal in very small quantity, but when the zinc becomes a considerable amount, the copper takes up the zinc, forming a kind of brass, and leaves the lead at liberty, and which, in great measure, separates in cooling. Zinc and lead are also very indisposed to mix alone, although a little arsenic assists their union by " killing
Page 513 - Newton generalized the law of attraction into a statement that every particle of matter in the universe attracts every other particle with a force which varies directly as the product of their masses and inversely as the square of the distance between them; and he thence deduced the law of attraction for spherical shells of constant density.
Page 551 - ... recede a distance apart, which can be regulated. These motions or vibrations are made to follow one another at such a rate that the effect of the light produced is continuous ; for, as is well known, when flashes of light follow one another at a rate greater than 25 to 30 per second, the effect produced is that of a continuous light. The...
Page 618 - O' will, when such a connecting pipe has been applied, furnish the supply cylinder independently of other external communication, and the acting medium will perform a continuous circuit through the machine under this arrangement, the operation being in other respects as before described. It is evident that the several parts composing the improved engine may be arranged in various ways, and that the external form thereof may be greatly changed whilst its principle of operation remains substantially...
Page 303 - ... coating to the iron. This portion of the work has been executed with scrupulous care, so as to render it unnecessary on the part of those who exercise a surveillance over the structure to examine it. The repainting of the cables every two or three years, will insure their duration for a long period. Where the cables rest on the saddles, their size is increased at two points by introducing short wires and thus forming swells, which fit into corresponding recesses of the casting. Between these...
Page 620 - By the motion of these interior vessels, which are filled with non-conducting substances, the air to be operated upon is moved from one end of the exterior vessel to the other, and as one end is kept at a high temperature, and the other as cold as possible, when the air is brought to the hot end it becomes heated, and has its pressure increased ; and when it is brought to the cold end, its heat and pressure are diminished.
Page 621 - ... than itself. Instead of this, therefore, the air is made to pass from the hot to the cold end of the air-vessel through a multitude of narrow passages, whose temperature is at first nearly as great as that of the hot air, but gradually declines till it becomes nearly as low as the coldest part of the air-vessel. Now as every body by contact will give out heat to one that is colder than itself, the air, when it enters the narrow passages, must give out a portion of its heat, even to the hottest...
Page 244 - C., about 4280° Fahr., these bricks will last four weeks in the roof of an ordinary furnace, and in that time will be reduced, by abrasion of the flame, and dust, and slightly from chipping, from 9 to 2 inches. The bricks conduct the heat so badly, that at this temperature, which is a bright white heat on the inside of the furnace, it is only just warm on the outside. Ordinarily, the bricks seem to be fluxed away by the dust, which circulates with the gases. In the Siemens furnace, where there is...