US1011745A - Tracker-board construction for automatic musical instruments. - Google Patents

Description

Patented Dec. l, 19V

3 SHFQTB-SHEBT 1 M. CLARK ION POR AUTOMATIC MUSICAL INSERUMENTS. OAToN FILED DBC. o. i909. 4

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TRAKER BOARD GNSTRUGT APPL 1,01 1,745.

-r A @riff 3 L M OOOOGOGOGO OOOOOGOOOOOOOOOOOOGGOQ M. CLARK. TRACKER BOARD CONSTRUCTION FOR AUTOMATIC MUSICAL INSTRUMENTS.

APPLICATION FILED DEC. 6, 1909.: l

Patented Dec. 12, 1911.

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Wig/726 @L M. 13mm. BOARD CONSTRUCTION FR A HACKER UTOMATIG MUSICAL INSTRUMENTS.

APPLICATION FILED D.EC. 8, 1909.

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MELVILLE CLARK, F CHICAGO, LLINIS.

TRACKER-BOARD CONSTRUCTION FOR AUTOMATC MUSL'OAL INSTRUMENTS.

Specification 0f Letters Patent.

Patented Dec 12, 1911.

Original application filed April. 8, 1909, Serial No= 488,625. Divided and this application ied December 6,

' 1909. Serial No. 53i,4?6. .i

To allie/rom 'it may. concern:

Be it known that I, MELviLLE CLARK,L

` sets of ducts, and consists in the features of construction shown and described as indicated in the claims.

ln the drawings: Figure l is an inverted pian view of a tracker board embodying this invention. Figs. 2 and 8 are sections at the lines 2-3 on Fig. l, showing the parts adjustedto dittorent positions for utilizing the tivo sets of ducts respectively. Fig. fl is a detail top plan` view showing a portion ot" the tracker board comprising the adjustingl devices. Fig. 5 is a rear elevation of the tracker device. Fig. 6 is a partly sectional inverted plan view of the tracker with the sliding-valve-bar removed, said tracker being partly broken away and shown in tion at the line G-'fon Fig. 2. Fig. 7 is a detail front edge elevation of portion ot the tracker. Fig. 8 is a plan view ot a sliding; valve-bar Which cooperates with the main tracker-board, said view showing the sur- 'tace of said valve-bar which faces the main traclu-ir-board.

The tracker board shown in the drawings, as a whole 'comprises a mouthpiece., l, having two rows of duct mouths, the first row, '2, comprising SS aperturesI (l, cut on a wider scale than the other row, 3, which comprises T26 noto. playing' apertures, 7), and an addi tional aperture, b1 at each end, only one end being shown, for purposes hereinafter vmentioned. The 't28 apertures in roW 3, are

cut on a narrower scale than the 8S apen -tures iu the row 2, so that the two rows of land duets, 5, from the mouths or apertures,

l), extend rearward for connection ,by tlexible tubes to the pneumatic actions, Preferably the tracker has two longitudinal ribs, 6, and 7, which contain respectively, the

forward and rear portions oi the ducts,

rows in the customary staggered arrange-k inent ior,obtainingsnitable intervals longitudinally between the apertures of each row. The duets, 5, .in the rib, (3, are diverged alternately upward and downward for issue from the rear edge of' said rib in two rows, so that in each row they may be spaced ,sutiiciently for the nipple connection ior the flexible tubes, 5t; and a similar double-row arrangement for connection with sand flexible tubes is provided at the forward edge l. l of the rear rib, 7. 88 ducts, 5, or set 3, be

ing all but 2O at each end of said set opening down through the surface of the rear rib, 7, of thc board 9, in two parallel rows of ports b2," corresponding to and spaced equally with the two rows of ports a2, in the saine surface of the hoard. But the corresponding* ports of the two sets, (i2, and b2, are staggered oppositoly with respect to the other, that is so that any tivo consecutive ports of one set are in an oblique line whose inclination is opposite that of the line in which the two corresponding consecutive ports of the other set stand.

rl`he ditlerence between thelongitudinal spacing of the ports oi the set, b2, and the spacing ot the mouths, of the set, 3, at

the edge of the mouthpiece of the tracker board, is covered by the divergence or splaying of the li'exible tubes, 5, between the two ribs, G, and 7. The remainder of the ducts, 5, ot the ser', 3, being twenty at each end of vthe set, open down through the end portions ot the rear rib, 7, which is extended beyond the end ci the .main board, 9, and into the ports oit said ducts on the lower side of said extended ribs there are fitted nipples, 5b, 'for connection of 'flexible tubes, l0.

Upon the lower surface of the rib, 7, there is mounted a slide, l2, which isfof the character of a valve-bar having' in the surface facing said rib, 7 two sets of ports, 13, and

A 14, each of said sets being comprised in two rows, the spacingvfrom each other of the four rows being the same as that of the four rib, 7; but the corresponding ports of the sets, 13, and 14, of the sliding valve bar,`12, are not relatively staggered but instead, are directly opposite to yeach other transversely of the rows. With this construction, it will be seen that the valve bar, 1 2, at one position ,1, may have the ports, 13, registering with the ports, a2, ofthe rib, 7, and being moved longitudinally half the distance bet-Ween `the consecutive ports in therows, the ports, 13, willbe carried out of registration with the ports, a2, while the port, 14, will be carried into registration with the port, b2., thus changing the connection from the tracker duct mouths, a, of the set, 2, to the tracker mouths, b, of the set, 3, to the extent of the 88'middle notes of the set, 3. i

For shifting the connection as above described, a lever, 15, is provided by the screw, 18 on the tracker board, and connected with a sliding-valve-bar, 12, by means of a bracket', 19, secured to the rear edge of said bar andv projecting upward therefrom past the rear edge of the tracker-board for engagement in the notch, 15", in the rear end of said lever, as seen in Fig. 4.

The duets from the correspondin 13, and 14, unite within the Valvear, 12, and emerge at the opposite surface of the slide in lports which are fitted with and indi'- cated by the nipples, 16, for connection with flexible tubes, 17, leading to the pneu matic action or actions (not shown) to be controlled by said ducts.

1. In an autopneumatic playing mechanism for keyed instruments, a tracker board having two sets of ducts opening through two parallel rows of mouths, one set being at their said mouths spaced on a wider scale than the' other set, said two sets of ducts opening through the same surface of the tracker at a. distance from their mouths in ports,

ports spaced on the same scale, each set in al plurality of rows, the ports in eachrow of each set at said surface being opposite the in- -tervals between consecutive ports of the cor'- responding row of the other set; a valve bar having at one surface duct ports corresponding to an equal number of the said ports of bothsets ot the tracker hoard, and having the corresponding ports of the two Sets 0pposite each other and the duets from suoli corresponding ports uniting in the bar and opening through the opposite side thereof in a single set of ports, and means for moving the valve-bar longitudinal] of the rows for shifting the registration o the ports of the valve-bar and of the tracker board from one set to the other.

2. In an autopneumatic playing mechanism for musical instruments, a tracker having two sets of ducts opening for registration With a controller sheet through arallel rows of mouths, one set being at t eir said mouths spaced on a wider scale than the other, said two sets o ening through the same surface of the traciier board at a distance from their mouths in ports spaced on the same scale, each setin a lurality of rows; a valve bar having a'li epluralit of rows of ports vin two sets opening through7 one surface, the spacing from each other of the several rows comprising said two sets of ports of the bar being the same as that of the like number of rows of ports of the tracker board, the ports of one of the sets of the bar beingotfset longitudinally of the rows from the position of the corresponding ports of the corresponding set of the tracker vwhen the other sets o'f ports of the tracker and bar are registered, and means for moving the bar longitudinally of the rows for shifting the registration from one set to the other.

3. In an autopneumatic playing mechanism for musical instruments, a tracker having two sets ofducts opening through two parallel rows of mouths, one set bein at their mouths spacedon a wider scale t an the other, and comprising a lesser number of ducts than the other within substantially the same length of tracker mouth piece, said.'

two -sets opening through the same surface of the tracker at a distance from their mouths, a. portion of the more numerous set equal to the total number of the other set having their ports at said surface equally spaced with ports of the other set; a .valve bar mounted against said surface Aof the tracker and having at its surface in contact therewith duct ports corresponding to all said last mentioned duct ports of the set comprising the lessernumber, and also duct ports corresponding to said equal number of the other set; said valve bar being positioned upon the tracker for covering all said ductp'orts 'of the lesser set of thev latterand said equal number of ports'of the other set, and having the ducts from the corresponding ports of the two sets uniting in said valve bar and opening through the opposite surface thereof in a single set of ports, the two sets of ports in the first mentioned surface of said bar being positioned relatively to the corresponding two sets o' ports of the tracker for registration of onllsr one of said sets at a time with its corresponding set; means for moving the bar longitudinally for shifting such registremy lmnl, at Chicago, Illinois, 'this 2nd dey tion, and flexible tubes connected respeeof Deeembe1,1909. tvelT with all the duet Jerte n seid o A poste side of the valve bal' and the remaljl- MELVXL'LL CLARK' g, ing duets; of the *rocker of the Set having Witnesses: the greater number. C. J. CHRISTOFFEL, In' testimony whereof, I have hereunto set M. GERTRUDE ADY.

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