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angle assumed axial bending bevel gears bolts brake bronze carbon cast iron cent chain circular pitch clutch coefficient of friction compression cone cone clutches construction coupling Cutter deflection denotes determine diam dimensions disc driving drum efficiency elastic limit equal face factor of safety fastened flange following expression force formula given in Table groove helical hence hoisting horse power involute joint leather length load lubrication machine magnitude manila rope manufacturers material maximum means metal number of teeth obtained pinion plate pounds per square pressure produced pulley radial ratio resistance revolutions per minute rivets roller roller chains rotation screw shaft shearing shearing stress sheave shown in Fig speed spring sprocket spur gears square inch surface tensile tensile stress tension thickness thread thrust bearing tion tooth torsional transmission ultimate strength varies various velocity wear width worm gear
Page 28 - The purchaser reserves the right to reject any portion or all of the material which does not conform to the above specifications in every particular and to return the rejected material to the manufacturer or seller for full credit at price charged FOB point of delivery specified by the purchaser. If the material is to be replaced, a new order will be entered at prices, terms, and conditions acceptable to the purchaser.
Page 371 - E., 71 feet; With a line at right angles to the center line of the highway N. 76° 53...
Page 54 - Vz inch nor more than % inch. Rivets connecting the shell to the gunwale shall be spaced not more than 3 inches on centers. The size of the rivets for connecting the shell plating to the keel, stem, and sternpost and gunwale shall be not less than that...
Page 166 - Tests of the Transmitting Capacities of Different Pulleys in Leather Belt Drives," in which he presented the results of an extended investigation on the transTABLE 39.
Page 280 - GH, is called the circular pitch, or circumferential pitch, and is equal to the circumference of the pitch circle divided by the number of teeth. In order to run together, two gears must have the same circular pitch.
Page 288 - ... dropped altogether. But it was first in the field, is simple in theory, is easily drawn, has the recommendation of many well-meaning teachers, and holds its position by means of "human inertia...
Page 94 - The washer when not held FIG. 629. down by the nut has the form shown in the lower part of the figure ; when the nut is screwed down tightly, the washer is flattened out and its elasticity keeps the nut tight on the bolt. FORMS OF BOLTS AND SCREWS. 1951. Bolts. — A stud bolt, or stud, is shown in Fig. 630. Each end of the stud has a screw thread cut on it. One end screws into one of the pieces to be connected, the other carries a nut. A stud having a collar is shown in Fig.
Page 476 - To safely hoist, hold, and lower a load, hoisting machinery is usually equipped with so-called safety, automatic, or retaining brakes. These brakes permit a load to be lifted freely by the motor, and lock the brake by the gravity action of the load as soon as the lifting torque of the motor ceases to act in the hoisting direction. The load is retained by the brake in any position, and only when the motor runs in the lowering direction is the acting power of the brake diminished, allowing the load...
Page 90 - The pitch allowed for stay-bolts on a flat surface and on the furnace sheet of an internally fired boiler in which the external diameter of the furnace is over thirty-eight (38) inches, except a corrugated furnace or a furnace strengthened by an Adamson ring or equivalent...