507 Mechanical Movements. Mechanisms and Devices by Henry T. Brown

By Henry T. Brown

This 1868 compendium of inventive mechanisms employs easy drawings to give an explanation for 507 of the small parts that represent complicated equipment. Left-hand pages characteristic illustrations, and dealing with pages provide short descriptions of use and operation. starting from basic to advanced, the mechanisms comprise cranks, pulleys, drills, wheels, and screws.

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74. A uniform intermittent rotary motion in opposite directions is given to the bevel-gears, A and B, by means of the mutilated bevel-gear, C. 75, Reciprocating rectilinear motion of the rod, C, transmits an intermittent circular motion to the wheel, A, by means of the pawl, B, at the end of the vibrating-bar, D. 76. Is another contrivance for registering or counting revolutions. A tappet, B, supported on the fixed pivot, C, is struck at every revolution of the large wheel (partly represented) by a stud, D, attached to the said wheel.

175. A means of giving one complete revolution to the crank of an engine to each stroke of the piston. 176 and 177. Contrivance for uncoupling engines. The wrist which is fixed on one arm of the crank (not shown) will communicate motion to the arm of the crank which is represented, when the ring on the latter has its slot in the position shown in 176. But when the ring is turned to bring the slot in the position shown in 177, the wrist passes through the slot without turning the crank to which said ring is attached.

103. Rectilinear motion of slide produced by the rotation of screw. 104. In this, rotary motion is imparted to the wheel by the rotation of the screw, or rectilinear motion of the slide by the rotation of the wheel. Used in screw-cutting and slide-lathes. 105. Screw stamping-press. Rectilinear motion from circular motion. 106 and 107. Uniform reciprocating rectilinear motion, produced by rotary motion of grooved cams. 108. Uniform reciprocating rectilinear motion from uniform rotary motion of a cylinder, in which are cut reverse threads or grooves, which necessarily intersect twice in every revolution.

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