stop

1. Loosely used for (a) drawknob and stop-knob and draw-stop, which only carry the label and, by admitting wind, bring into play the stop proper. (b) A mechanical stop, which does not sound or speak, but acts as a coupler, a bell-signal, a tremulant, etc. Strictly, the sounding, or speaking stop is a complete graduated series of organ-pipes of uniform quality. It is this quality which gives the stop its individual name ee dulciana, cremona, etc.). Stops are divided into two chief cla es, (a) those with flue-pipes, flue-work, or flue-stops, and (b) those with reed-pipes (q.v.), reed work, or reed-stops. flue-work is again divided, according to the character of the pipes, into (a) the cylindrical open pipes that give the diapason, or typical organ-quality, also called principal-stops, or -work; (b) covered, plugged, or stopped pipes (without chimneys), gedacktwork; (c) pipes too broad or too narrow of scale to give diapason tone, 3 or 4 sided wooden pipes, and stopped pipes with chimneys. stops are further grouped according to the length of their pipes as 2-ft., 4-ft., 8-ft., etc., the standard being the 8-ft., or foundation-stops, which are the basis of the organ, and to which the other stops are tuned (vide FOOT). stops which do not produce the unison or the octave of the key-board, but sound the third (tierce), fifth (quint) and such of their octaves as the tenth (double tierce), fifteenth, etc., are called mutation-stops. furniture, mixture, or compound stops are composed of 2 or more ranks of pipes and produce the octave of the key depre ed and also OF. TERMS one or more of its other overtones. A stop may have its pipes divided between two draw-knobs. If it has a pipe for every key of the key-board, it is complete; otherwise it is an imperfect, incomplete, partial or half Stop. Some stops are given only to the pedal; or to only one of the manuals; these are said to be on the pedal, ox the swell, etc. A solo-stop is one complete enough in itself to sound a melody. stopped. Vide PIPE.