II 509 OVERTONES (259, 260) 3/4 19th C. Signed: Koenig
Length of tubes 700, diameter 17
Two glass tubes with at their ends a boxwood plug and vent (stamped:
Koenig). One tube has an open end and the other a closed end. When
the length of a tube is very great compared with its diameter, the note
is virtually independent of the diameter, and only the length counts.
The first note sounded is the fundamental, and as more air is turned on
under pressure, a series of notes is heard, which are the overtones. With
two tubes of the same length, the closed tube sounds an octave lower
than the open tube. Koenig (1889), 44, no. 103, fig. 48; Deschanel
(1877), 839-840, § 667, fig. 397.
510 ORGAN PIPES (various) 3/4 19th C.
509
All are rectangular and all but two made of pine; length given is overall;
stamped by Rudolph Koenig, Paris. Some are stamped with the
note. Numbers at left are Teyler s Museum inventory numbers. Harris
[1900], chapter 10: “Flue-pipes and Reeds”.
253 Length 390; slider in middle to open and close tube.
254 Three of different section, giving same note; length 420.
255/1 UT3; length 665.
255/2 RE3; length 600.
256 FA2; length 973.
257 UT4; length 358.
258 FA^; length 282.
753 Length 670; glass window in one side.
1029/1 Length 288; one hole in top.
1029/2 Length 285; two holes in top.
1030/1 Length 292; two holes in top.
1030/2 Length 292; three holes in top.
Made in limewood; no makers mark:
1028 Length 305; cut longitudinally for demonstration.
1031 • Length 315; with blown tube, and zinc plate over end at an
angle.
510
511 REED PIPE (261,1047) 3/4 19th C.
Supported on a domed base is an oak pipe (length 250; sides 52) glazed
on three sides to view the reed when vibrating. Three oak pyramidshaped
vents fit into the top of the pipe. Koenig (1865), 17, no. 79,
price 15 jfrancs; Koenig (1889), 47, no. 115, fig. '59, price 30 francs',
Ganot (1883), 223-4, § 272.
5121032)
511
512 ORGAN PIPES WITH CAPSULES 3/4 19th C.
(28lM50, 7 ^ | 752,1032)
Signed: RUDOLPH KOENIG A PARIS;
281 Length 700; three manometric capsules.
P ; jiiength 730; three capsules; supported on a wooden stand,
jpjjf ML; length 480; one central capsule.
¡§52 SOL,; length 400; one central capsule.
So32 UT4; length 303; one central capsule.
p a s jets are ^¡sMllated by Ms; air in the pipes when sounded vra the
membrane in the manometric capsules, and the pulsing is revealed by a
rotating mirror. The capsules are placed at the nodes or at the ventral
points of the vibrating air in the pipes, Koenig (1865), 43, nos 213-
215, figs 14-15; Koenig (1889), 84, no. 23l,: fig. 112; Deschanel
H i 877), 846.