 | Royal Agricultural Society of England - Agriculture - 1873 - 864 pages
...power. Its cost is 51. 10s., and, with slight modifications, it can be «asily fitted to any engine or boiler. 4788. Head, Wrightson, and Co. — This...face of each disc is dished out, and the periphery of each dished recess is formed into an internal toothed wheel (Fig. 19, p. C40). One disc has a tooth... | |
 | Industrial arts - 1850 - 436 pages
...an ingenious continuation of the arrangement of piston-rods, springs, and other machinery, all being simple in construction, and therefore not liable to get out of order. The break itself, when in operation, clips around a drum in the middle of the axletree of the two wheels... | |
 | Photography - 1889 - 376 pages
...disturbance of the camera ensuing therefrom. In conclusion I would say that this camera is extremely simple in construction and therefore not liable to get out of order. It is mechanical throughout, every action is positive, ami no unreliable springs or friction devices... | |
 | International Correspondence Schools - Mining engineering - 1900 - 728 pages
...especially for the operation of pumping and hoisting machinery, because the motors operated by them are very simple in construction and therefore not liable to get out of order. ALTERNATING-CURRENT MOTORS. Alternating-current motors may be divided into two general classes: (a)... | |
 | Thomas J. Foster - Coal mines and mining - 1916 - 1230 pages
...especially for the operation of pumping and hoisting machinery, because the motors operated by them are very simple in construction and therefore not liable to get out of order. ALTERNATING-CURRENT MOTORS Alternating-current motors may be divided into synchronous motors and induction... | |
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Its cost is 51. 10s., and, with slight modifications, it can be «asily fitted to any engine or boiler. 4788. Head, Wrightson, and Co. — This pulley-block or hoist is constructed on a novel and ingenious principle. Although its parts are simple in construction,... 