| 释义 |
spring-beam
[f. spring n.1 or v.1]
The distinctive name of certain strong timbers forming part of the fittings of an engine or paddle-box.
Other senses are recorded by Knight Dict. Mech.
a.1797J. Curr Coal Viewer 61 Allow proper height for the inside spring beams..and about 6 inches for the springs. 1825J. Nicholson Operat. Mech. 180 In engines used for this purpose there are two pieces of wood, called spring-beams, placed across each end of the beam. 1883Gresley Gloss. Coal-m. 232 Spring beams, two stout parallel timber beams built into a Cornish pumping-engine-house, nearly on a level with the engine beam.
b.1843Civil Eng. & Arch Jrnl. VI. 70/1 They have no connexion with the spring-beam or frame of the paddle⁓boxes. 1846A. Young Naut. Dict. 310 The projecting ends of the paddle-beams with a fore and aft beam of wood fitted between them, called a spring beam. |