Smith and Pinkney

1882

of 57 John Street, Sunderland

Messrs. Smith and Pinkney, of 57, John-street, Sunderland, exhibit their atmospheric pendulum marine governor, of which we give engravings on page 349 of the present issue. This governor is brought into action by the pitching of the vessel, while the work of closing the throttle valve is performed by a piston acted upon by atmospheric pressure, the exhaust side of the piston being in communication with the condenser. Referring to our illustrations it will be seen that the apparatus consists of a small horizontal cylinder, provided with a small equilibrium slide valve covering three ports as usual, this slide valve being connected by the links and lever shown with the stem of a heavy pendulum which is slung from a frame mounted on the cylinder just mentioned. The exhaust port of the cylinder is connected by a small pipe with the engine condenser, while the piston rod of the governor is coupled to the throttle valve.
The action of the apparatus will be readily understood. On the stern of the vessel rising, and thus tending to throw the screw out of the water, the pendulum swings forward, and in so doing shifts the slide valve from its central position, thus admitting air to one end of the cylinder, and placing the other in communication with the exhaust, and hence with the condenser. Under these circumstances the pressure of the atmosphere acting on one side of the piston moves the latter and closes the throttle valve. On the stern of the vessel falling the reverse action takes place and the throttle valve is reopened. Provision is made for regulating the action of the pendulum according to the trim of the ship, while by means of a cock on the exhaust pipe the governor can be readily turned out of action if required. The arrangement has the advantage of being free from the drip of water, &c., attending the use of steam in governor cylinders, while it can also be readily arranged in any convenient place. We understand that Messrs. Smith and Pinkney’s governor has been fitted to several steamers and has given satisfaction.. See illustration above.

1883 Launch of SS Atrato (D. G. Pinkney and Sons) at the Deptford (Sunderland) yard of J. Laing. Fitted with Colling and Pinkney's patent topsails and Smith and Pinkney's patent marine governor

1886 Description and drawings of marine governor

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