Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . The downward motion of the ballsrestores the normal position. The parts may be soarranged as to straighten the toggle by the raisingof the ball, if so desired. Modifications are showm in the patents wherebyeither the tangential or radial motions of the ballmay be utilized, or an efiect obtained from the sumof the two motions. Some other forms than the pendulous
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . The downward motion of the ballsrestores the normal position. The parts may be soarranged as to straighten the toggle by the raisingof the ball, if so desired. Modifications are showm in the patents wherebyeither the tangential or radial motions of the ballmay be utilized, or an efiect obtained from the sumof the two motions. Some other forms than the pendulous ball may bereferreil to. 2> is a governor in which the valve is operated bythe direct pressure of steam upon a piston on its piston operates in a smaller cylinder, talcingsteam from tlie main cylinder. q q is lluntoons hydraulic governor, in which apropeller-wheid works in a liquid whose resistancecauses the ]Moiieller-shaft to rise in a dcgi-ce iiro])or-tioned to the rate of speed. The sectoral frame withits draw-pawls has a constant, reciprocating, rotarymotion, and when either of the pawls comes in contactwith the ratchet, it causes the ratchet-shaft to rotateto actuate the steam-valve. The rocker-lraine is actu-. Plate SSI. STEAM-ESGINE GOVERXORS. See page 99S. GOVERNOR CUT-OFF. 999 GRAB. ated by the governor, and its cams bring one orother of tlie pawls in contact with the ratchet, ac-cording to the variation of the speed Ibove or belowthe desire<l point. r is a somewhat similar contrivance, in which thelongitndinal position of the propeller in the water-cylinder, due to its rate of speed, determines by theconnecting rack and segment the position of tlie valvein the steam-pipe. Silvers momentum-wheel governor has a heavyrevolving wheel, whose momen,tum acts upon thethrottle-valve when any change occurs in the rate ofmotion of the engine. See also hi/draulic governor or cataract is the inven-tion of Smeaton. A quantity of water is pumped a
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