|
8. (Mus.) (a) A grace consisting of two or more small notes moving by conjoint degrees, and leading
to a principal note either above or below. (b) An apparatus in the trumpet and trombone by which the
sounding tube is lengthened and shortened so as to produce the tones between the fundamental and its
harmonics.
9. (Phonetics) A sound which, by a gradual change in the position of the vocal organs, passes imperceptibly
into another sound.
10. (Steam Engine) (a) Same as Guide bar, under Guide. (b) A slide valve.
Slide box (Steam Engine), a steam chest. See under Steam. — Slide lathe, an engine lathe. See
under Lathe. — Slide rail, a transfer table. See under Transfer. — Slide rest (Turning lathes),
a contrivance for holding, moving, and guiding, the cutting tool, made to slide on ways or guides by
screws or otherwise, and having compound motion. — Slide rule, a mathematical instrument consisting
of two parts, one of which slides upon the other, for the mechanical performance of addition and subtraction,
and, by means of logarithmic scales, of multiplication and division. — Slide valve. (a) Any valve which
opens and closes a passageway by sliding over a port. (b) A particular kind of sliding valve, often used
in steam engines for admitting steam to the piston and releasing it, alternately, having a cuplike cavity in
its face, through which the exhaust steam passes. It is situated in the steam chest, and moved by the
valve gear. It is sometimes called a D valve, — a name which is also applied to a semicylindrical pipe
used as a sliding valve.
In the illustration, a is the cylinder of a steam engine, in which plays the piston p; b the steam chest,
receiving its supply from the pipe i, and containing the slide valve s, which is shown as admitting steam
to one end of the cylinder through the port e, and opening communication between the exhaust passage
f and the port c, for the release of steam from the opposite end of the cylinder.
Slidegroat
(Slide"groat) n. The game of shovelboard. [Obs.]
Slider
(Slid"er) a. See Slidder. [Obs.] Chaucer.
Slider
(Slid"er), n.
1. One who, or that which, slides; especially, a sliding part of an instrument or machine.
2. (Zoöl.) The red-bellied terrapin [Local, U. S. ]
Slider pump, a form of rotary pump.
|
