| slovo | definícia |
D valve
(gcide) | Slide \Slide\, n. [AS. sl[imac]de.]
1. The act of sliding; as, a slide on the ice.
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2. Smooth, even passage or progress.
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A better slide into their business. --Bacon.
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3. That on which anything moves by sliding. Specifically:
(a) An inclined plane on which heavy bodies slide by the
force of gravity, esp. one constructed on a mountain
side for conveying logs by sliding them down.
(b) A surface of ice or snow on which children slide for
amusement.
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4. That which operates by sliding. Specifically:
(a) A cover which opens or closes an aperture by sliding
over it.
(b) (Mach.) A moving piece which is guided by a part or
parts along which it slides.
(c) A clasp or brooch for a belt, or the like.
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5. A plate or slip of glass on which is a picture or
delineation to be exhibited by means of a magic lantern,
stereopticon, or the like; a plate on which is an object
to be examined with a microscope.
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6. The descent of a mass of earth, rock, or snow down a hill
or mountain side; as, a land slide, or a snow slide; also,
the track of bare rock left by a land slide.
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7. (Geol.) A small dislocation in beds of rock along a line
of fissure. --Dana.
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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.
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9. (Phonetics) A sound which, by a gradual change in the
position of the vocal organs, passes imperceptibly into
another sound.
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10. (Steam Engine)
(a) Same as Guide bar, under Guide.
(b) A slide valve.
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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.
[1913 Webster] 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.
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D valve
(gcide) | D valve \D" valve`\ (Mech.)
A kind of slide valve. See Slide valve, under Slide.
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| | podobné slovo | definícia |
solenoid valve
(encz) | solenoid valve,elektromagnetický ventil n: [tech.] cartime.eu |
tricuspid valve
(encz) | tricuspid valve, n: |
Balanced valve
(gcide) | Balance \Bal"ance\ (b[a^]l"ans), v. t. [imp. & p. p. Balanced
(b[a^]l"anst); p. pr. & vb. n. Balancing
(b[a^]l"an*s[i^]ng).] [From Balance, n.: cf. F. balancer.]
1. To bring to an equipoise, as the scales of a balance by
adjusting the weights; to weigh in a balance.
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2. To support on a narrow base, so as to keep from falling;
as, to balance a plate on the end of a cane; to balance
one's self on a tight rope.
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3. To equal in number, weight, force, or proportion; to
counterpoise, counterbalance, counteract, or neutralize.
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One expression . . . must check and balance another.
--Kent.
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4. To compare in relative force, importance, value, etc.; to
estimate.
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Balance the good and evil of things. --L'Estrange.
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5. To settle and adjust, as an account; to make two accounts
equal by paying the difference between them.
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I am very well satisfied that it is not in my power
to balance accounts with my Maker. --Addison.
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6. To make the sums of the debits and credits of an account
equal; -- said of an item; as, this payment, or credit,
balances the account.
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7. To arrange accounts in such a way that the sum total of
the debits is equal to the sum total of the credits; as,
to balance a set of books.
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8. (Dancing) To move toward, and then back from,
reciprocally; as, to balance partners.
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9. (Naut.) To contract, as a sail, into a narrower compass;
as, to balance the boom mainsail.
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Balanced valve. See Balance valve, under Balance, n.
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Syn: To poise; weigh; adjust; counteract; neutralize;
equalize.
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Potlid valve
(gcide) | Potlid \Pot"lid`\, n.
The lid or cover of a pot.
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Potlid valve, a valve covering a round hole or the end of a
pipe or pump barrel, resembling a potlid in form.
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Sigmoid valves
(gcide) | Semilunar \Sem`i*lu"nar\, a.
Shaped like a half moon.
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Semilunar bone (Anat.), a bone of the carpus; the lunar.
See Lunar, n.
Semilunar valves, or Sigmoid valves (Anat.), the valves
at the beginning of the aorta and of the pulmonary artery
which prevent the blood from flowing back into the
ventricle.
[1913 Webster]Sigmoid \Sig"moid\, Sigmoidal \Sig*moid"al\, a. [Gr. ???; ???
sigma + e'i^dos form, likeness: cf. F. sigmo["i]de.]
Curved in two directions, like the letter S, or the Greek
[sigmat].
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Sigmoid flexure (Anat.), the last curve of the colon before
it terminates in the rectum. See Illust. under
Digestive.
Sigmoid valves. (Anat.) See Semilunar valves, under
Semilunar.
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Tricuspid valve
(gcide) | Tricuspid \Tri*cus"pid\, a. [L. tricuspis, -idis; tri- (see
Tri-) + cuspis a point: cf. F. tricuspide.]
1. Having three cusps, or points; tricuspidate; as, a
tricuspid molar.
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2. (Anat.) Of or pertaining to the tricuspid valves; as,
tricuspid obstruction.
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Tricuspid valve (Anat.), the valve, consisting of three
triangular membranous flaps, at the opening of the right
auricle into the right ventricle in the heart of most
mammals; -- sometimes called the tricuspid valves, each
flap being regarded as a valve.
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tricuspid valves
(gcide) | Tricuspid \Tri*cus"pid\, a. [L. tricuspis, -idis; tri- (see
Tri-) + cuspis a point: cf. F. tricuspide.]
1. Having three cusps, or points; tricuspidate; as, a
tricuspid molar.
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2. (Anat.) Of or pertaining to the tricuspid valves; as,
tricuspid obstruction.
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Tricuspid valve (Anat.), the valve, consisting of three
triangular membranous flaps, at the opening of the right
auricle into the right ventricle in the heart of most
mammals; -- sometimes called the tricuspid valves, each
flap being regarded as a valve.
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bicuspid valve
(wn) | bicuspid valve
n 1: valve with two cusps; situated between the left atrium and
the left ventricle [syn: mitral valve, bicuspid valve,
left atrioventricular valve] |
tricuspid valve
(wn) | tricuspid valve
n 1: valve with three cusps; situated between the right atrium
and the right ventricle; allows blood to pass from atrium
to ventricle and closes to prevent backflow when the
ventricle contracts [syn: tricuspid valve, {right
atrioventricular valve}] |
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