US1769184A - Automatic musical instrument - Google Patents

Description

y 1930- I L. 5. LOCKWOOD 1,769,184

AUTOMATIC MUSICAL INSTRUMENT F iled Feb. 17 92 3 Sheets-Sheet l.

1 xxx H July 1, 1930. s. LOCKWOOD 1,769,134

AUTOMATIC MUSICAL INSTRUMENT Filed Feb. 17 192 3 Sheets-Sheet 2 m mw w N July 1, 1930. L. s LOCKWOOD AUTOMATIC MUSICAL INSTRUMENT Filed Feb. 17 192 3 Sheets-Sheet 3 IIII/II!I I, V/lllllii v IV H Guam-E0008! WU U UDDUU DDDDUBDDBOD H DWDU I Patented July 1, 1930 UNITED STATES:

PATENT OFFICE LOUIS S. LOCKWOOD, OF NORTH TONAWANDA, NEW YORK, ASSIGNOR TO THE RUDOLPH WUBLITZEB MANUFACTURING COMPANY OF NORTH TONAWANDA, NEW YORK,

A CORPORATION OF NEW YORK AUTOMATIC MUSICAL INSTRUMENT This invention relates generally to automatic musical instruments but more particularly to organs and similar instruments controlled by a music roll and tracker and having stops and other parts which must be actuated during the playing of a composition.

Its chief object is to provide a novel tracker arrangement combined with a simple and reliable electro-pneumatic mechanism associated therewith for controlling the drawing and cancelling of various stops and other parts in the instrument.

Another object of the invention is to provide the tracker with stop controlling ducts arranged in vertical line with the usual note ducts together with means for automatically cancelling or rendering a given note duct inoperative whenever an alining stop duct is made operative by a registering stop perforation in the note sheet or for rendering a given stop duct inoperative whenever an alining note duct is selected by a registering perforation in the note sheet.

Other obj ects and features of the invention reside in the construction and arrangement of parts hereinafter described and more particularly pointed out in the appended claims.

In the accompanying drawings Figure 1 is a diagrammatic view of an automatic musical instrument,such as an organ,

embodying my invention. Figure 2 is a sectional elevation showing the position of the parts of the mechanism when a note perforation registers with corresponding alining stop and note ducts in the tracker. Figure 3 is a similar view showing the position of the parts of the mechanism when a stop perforation registers with corresponding alining stop and note ducts in the tracker. Figure 4 is a fragmentary face view of the tracker.

Figure 5 is a sectional elevation of one of the 7 stop control motors and associated parts. Figure 6 is a similar view of one of the master or pilot control motors. Figure 7 is a similar view of one of the retaining stop action units; Figure 8 is a sectional view of one of the rocker switches for controlling a corresponding stop action.

Similar characters of reference indicate corresponding parts throughout the several views.

In its general organization, this invention consists of a tracker having a row of note ducts, a row of stop control ducts paired with and arranged above and in vertical alinement with more or less of the note ducts, and a row of master ducts arranged beyond the zone of the note and stop ducts and corresponding to the pedal, solo, accompaniment, etc. actions of the organ; a note sheet having corresponding perforations for registering with said several ducts; a player stop action controlled by the simultaneous uncovering of a master duct and a stop duct; a retaining stop action which operates in conjunction with the player stop action for maintaining the automaticallyselected stops on and for cancel-' ling such selected stops when the next series or combination of note sheet perforations register with corresponding tracker-ducts to bring on different stops or possibly the repetition of previous stops with new ones, as called for by the composition being played; and an on and off mechanism for automatically effecting the cancelling or cutting off of that note duct in the tracker in line or paired with the corresponding stop duct being selected, and for similarly cutting off such stop duct when the companion alining note duct is to be played. I

Referring now to the drawings, 10 indicates a tracker of any suitable construction having the customary note ducts or holes 11, and-12 the note sheet. The manual keys are indicated at 13, each key being adapted, when depressed, as by the registration of a note sheet perforation with a corresponding note pneumatics which carries a metallic bar 21 adapted to bridge a pair of contacts 22, one of which is connected by a wire 23 with the feed wire 16, while the other leads to corresponding terminals 2* on the usual rocker switches 25 which govern the various stops in the organ. These rocker switches are controlled by the corresponding stop action electromagnets 26 included in the retaining stop action circuit hereinafter described. V-Fhen the circuit including one of said electromagnets 26 is closed, it operates a pneumatic 27 in the well-known manner to shift the respective rocker switch to on position, its terminal making contact with the usual contact strips 28 which are connected by wires 29 to the electromagnets 30 in the pipe chests, thus bringing the corresponding stop of pipes on ready for playing when the music perforations in the note sheet register with the tracker duets.

In addition to the note ducts 11, which are indirectly connected to the usual corresponding electro-pneumatic actions 11 of the relay circuit, the tracker is provided with a plurality of master ducts or holes 31 preferably located at one end of the tracker beyond the zone of the note ducts, and a plurality of stop ducts or holes 32 located in substantially horizontal alinement with said master ducts and above and in vertical line with more or less of the note duets 11. The master lucts and cooperating stop ducts function, through the medium of the player stop action and the retainin stop action above referred to, when uncovered by corresponding perforations 33 and 3t, respectively, in the note sheets, to control the various instrumentalities in t. e organ. The master ducts correspond in number to the various sections of the organ, such as the pedal, accompaniment, solo, etc, while the stop ducts correspond in number to those of the stops in the organ sections.

The player stop action is preferably constructed as follows 35, 35 indicate two motor pneumatics which actuate or control the organ stops or other parts to be operated, and 36, 36 two master pneumatics which control the action of said stop pneumatics. lVhile two of such stop and master pneumatics are shown in the drawings, it is to be understood that a sufficient number are employed in practice according to the number of stops and other parts to be actuated. Each of the stop pneumatics is controlled by any suitable or well known pneumatic valve unit, that shown in the drawings comprising the customary valve chamber 37 connected by a port 38 with the atmosphere and by a port 39 with the exhaust chamber 20; a duplex valve 41 controlling said ports; a passage 42 connecting the interior of said pneumatic with the valvechamber; and a diaphragm 43 controlling the duplex valve and a conduit 44 leading from the chamber beneath the diaphragm to the companion stop duct 32. Interposed in the conduit 44 is a pouch block or chamber 45 containing a pouch valve 46 which normally extends over and closes the communicating ends 47 of the conduit and which is adapted to be raised to establish such communication, as shown by dotted lines in Figure 5, whenever the corresponding stop in the organ is automatically selected.

Each of the master pneumatics 36 is controlled by a similar pneumatic valve unit indicated generally by the numeral 48 and connected by a conduit at) with the companion master duct 31 in the tracker. Both the master and stop pneumatics are normally iiifiated and are deflate-d when the perforations 33, 34 in the note sheet register with the corresponding tracker- ducts 31, 32. \Vhen thus deflated, these pneumatics act to establish electric circuits, the master pneumatic 36 controlling the opening and closing of the stop pneumatic circuits which in turn are connected to the circuits of the retaining stop action. For this purpose, each master pneumatic carries a contact yoke 50, which, in the collapsed position of such pneumatic, bridges a plurality of contact wires 51, 52, while each SLCJP pneumatic carries a contact yoke or yokes adapted to bridge contact wires 54, when such pneumatic is collapsed. The contact wire 51 is connected by a wire 51" with the generator feed wire 16 while the companion contact wires 52 are connected to the contact wires 54 of the corresponding stop pneumatic by conductors 56, the contact wires being joined to conductors 57 leading to the circuit of the retaining stop action presently to be described.

This retaining stop action preferably consists of a wind chest 56 which contains as many pneumatics 59 as there are stops or other parts in the organ to be actuated. Each of such pneumatics is in communication with the wind chest through a pasage 60 controlled by an electropneumatic valve 61, so that when the magnet 62 thereof is energized, the corresponding pneumatic is collapsed. The conductor 5? leading from a corresponding contact wire of one of the stop pneumatics 35 is connected to one of the poles of the companion electron net 62, the other pole being connected by a i e 33 to the generator return wire 19. Thus, whenever a stop pneumatic 35 is caused to collapse simultaneously with a companion master pneumatic 36, the circuit including the corresponding magnet 62 is closed and the pneumatic 59 controlled thereby is deflated. he latter carries a contact l yoke 64 adapted to bridge three contacts 65, 66 and 67 in the collapsed condition of its pneumatic. The contact is connected by a wire 68 with the generator feed wire 16, the contact wire 66 is connected by a wire 69 to the corresponding stop action electromagnet 26, and thecontact 67 is connected by a wire 70 to a. switch indicated generally at 71 and functioning to normally complete the circuit of the magnet 62 to retain the corresponding stop in the organ in its on position and to momentarily break such circuit to cancel or discontinue such stop while bringing on others or even repeating this stop as determined by the composition bein played.

The switch 71 is preferably 0 the ordinary rocker type, similar to that shown at 25 for governing the stops in the organ, and in cludes a rocking switch-head 72 carrying a plurality of contacts 73 adapted toengage companion contact strips 74. Each of the latter is connected by the Wire 70 to the contact 67 of the corresponding retaining stop action pneumatic 59, while the companion switch contact 73 is connected by a Wire 75 to the wire 57 leading to the magnet 62 controlling said pneumatic. This switch is normally closed to maintain the circuit through the magnet 62 and thus retain the selected stops in the organ on after the perforations-33, 34 in'the note sheet have passed the corresponding tracker ducts 31, 32, a spring,

76 applied to the actuating arm 77 of the switch-head serving to hold the latter in its raised position with its contacts 73 engaged with the strips 74. The momentary breaking of the circuit at the switch 71 to cancel a stop that has been on is automatically effected during the collapse of the master pneumatic 36 by thefollowing mechanism 78 indicates a wind chest containing an electromagnet 79 which operates a disk valve 80 that supplies air from the chest thrbugh a passage 81 to a pneumatic 82, which in turn actuates a duplex valve 83 controlling the supply of air from the wind chest through a passage 84 leading to a pneumatic 85 connected by a link 86 with the arm 77 of the rock switch-head 72. The energizing of the electromagnet 79. results in the inflation of the pneumatic 85 which acts to rock the switch-head to its off position. Each master pneumatic 36, in addition to carrying the contact yoke 50 for bridging the contacts 51, 52, also carries a yieldablecontact arm 87 on its movable board, which, during the collapse of such pneumatic, is adapted to mementarily engage a hook-shaped contact 88 applied to the opposing movable board of a retarder bellows 89. The master pneumatic is normally inflated by a spring 90, while the retarder bellows is held in a deflated position by said master pneumatic through the medium of the contact arm 87 bearing against it, as shown in Figure 6. The retarder bellows also has a spring 91 applied thereto for expanding it as the master pneumatic is deflated, but this spring is weaker thanthe spring of said master pneumatic so as not to resist its inflation. The bellows has a bleed hole 92 for regulating the retarding action thereof. The contacts 87 88 constitute the elements of a switch and are included in the circuit of the electromagnet 79 controlling the switch 71, the contact arm 87 being connected by a wire 93 to one pole of said magnet and the companion contact 88 being connected by a wire 94 to the generator feed wire 16, while the other magnet pole is connected by a wire 95 to the generator return wire 19.

By this arrangement, when the master pneumatic is collapsed, its contact arm 87 engages the hook shaped contact 88, as shown in Figure 3, thereby closing the circuit including the electromagnet 79 and opening the switch 71. Immediately after this action has taken place, and while said contacts 87, 88 are closed, the contact yoke 50 of the master pneumatic engages the contacts 51, 52 and thereby closes the circuit including the electromagnet 62 of the retaining stop action. By reason of the retarded expandingmove ment of the bellows 89, it is not fully expanded when the master pneumatic is fully collapsed, but its spring 91 continues to urge it to such position and during this period the contacts 87, 88 are broken or separated while the contacts 50, 51, 52 are still closed, with the result that the, magnet 79 is deenergized and the switch 71 controlled by it is returned to its normally closed position. Hence, when a stop pneurna io 35 is collapsed simultane+ ously with that of a companion master pneumatic, as in the case in the automatic selection of a certain stop or stops in the organ, the closing of the contacts 50, 51, 52 completes the circuit through the Contact yoke 53 and contacts 54, 55 and electromagnet 62 of the retaining stop action, thereby collapsing the corresponding pneumatic 58 of the latter and closing the circuit across its contacts 65. 66, 67 to bring the desired stops on. The circuit thus established to effect this result includes the feed wire 16, wire 68, contact 65, I contact yoke 64, contact 66and thence over wire 69 to the electromagnet 26 of the stop action. g

It will therefore be understood, that for a brief period, thecircuit including the electromagnet 62 of the retaining stop action will be closed at two points, viz., through the switch 71 and the contacts of the master pneumatic 36 and the respective stop pneumatic 35. The moment, however, these companion pneumatics are inflated to their normal position, by reason of the note sheet perforations 33, 34 having passed the corresponding tracker ducts 31, 32, the circuit is broken at the contacts 50, 51, 52 and also at the contacts 53, 54, 55, but it is still retained at the switch 71 by reason of the circuit controlling it having been closed prior to the breaking of the circuit at the contacts just mentioned. The circuit thus retained for keeping the selected stop, on for the ref quired period called for by the composition being played, includes the feed wire 16, wire 68, contact 65, contact yoke 64, contact 67, wire 70, contact strip 74 and contact 7 3 (switch 71), wire 75 electromagnet 62 and thence by the wire 63 to the generator return wire 19.

Upon the inflation of the master pneumatic 36 to its normal position, its contact arm 87 immediately returns to the movable board of the bellows 89, thus collapsing the latter with said contact arm remaining clear or the hook-she ed contact 88.

Inasmuch as the stop ducts 32 are in the path of travel of the music perforations in the note sheet and the note ducts 11 are likewise in the path of travel of the stop perforations 3% in the note sheet, means must necessarily be provided for effecting the canceling or cutting oil of that note duct in the tracker in vertical alinement with the corresponding stop being selected and iior similarly cutting oil such stop duct when the companion alining note duct is to be play 11. For this purpose an automatically controlled on and oil mechanism is employed which is preferably constructed as follows Connected to each of the note ducts 11 in the tracker is conduit 96 which leads to a pouch block or chamber 97 containing a pouch valve 98 for controlling the passage of m said conduit to a second conduit 99 ng to the duplex valve unit 100 of the "esponding relay or note-controlling pneumatic 11, such valve unit being identi cal in construction to those of the penumatics 35 and 36. Normally, the pouch valve 98 is raised, as shown in Figure 2, to establish unication between the conduits 96 and 99, so that when a note perforation in the music sheet registers with a note duct 11,

atmosphere will llow through said conduits r erate the duplex valve or the note-cont olliu pneumatic to collapse the same and 1'7 close its contacts 101, 102wh1ch are included in the circuit of the electro-magnet 18 of the relay act-ion.

1c valve unit i8, which is conconduii; l9 with one of the l l for controlling the corresponding" i a icumatic 36, also governs the actuatict i c pouch valves and 98 to ellcct firstly, the collapse of a given stop pneumatic whenever a corresponding stop duct 32 is uncovered simultaneously with that of a master duct, and secondly, to cut oil the aliuing note duct- 11 and prevent its corresponding note peaking, that is, to impair the actuation oi the relay pneumatic 11 controlling the circuit of the corresponding pipe action. To this end, a master control element preferably consisting of a pouch unit 103 is pr vided which contains as many pouch chambers 10% and valves 105 as there are master tracker ducts 33, each chamber being in. ducts connected by a conduit 106 with a branch passage 107 leading to the passage 108 connecting the corresponding master pneumatic 36 with its duplex valve unit 4.8, so that whenever the companion master duct is uncovered to collapse said pneumatic, a part of the suction employed for collapsing it acts on the respective pouch valve to open or raise it, as shown in Figure 3. Each pouch valve 105 bridges a pair of ports 101), 11.0, the former opening into the {lUUUT-IPllcIG and the latter into a manifold passage 111 in the pouch unit which is connected by a conduit 112 with a controlling valve indicated generally by the numeral 113 and lunction n through the medium of the pouch valve to govern the selection or a given stop in the organ. This controlling valve is preferably ol the type shown in connection with the pneumatics 35, 2513. the numeral 111 indicat g its exhaust chamber and 115 the duplex valve actuated the diaphragm 116, the conduit 112 leadto the usual chamber beneath the diar gm. The ports 11?, 118 which communih the atmosl'iherc and exhaust chamicctivel are connected by a passage conduit 120 with the pouch chamber Joined to this conduit is a branch cona. "it 121 which leads to the actuating diaphragm of a second controlling valve consistoi a pneumatic valve unit 122 identical The passage 119 of this valve unit by a conduit with the pouch .ltlllllJQl 97. This second controlling valve 2 which governs the pouch valve 08, is in urn governed by the controlling valve 113 of he pouch valve 10 so that when a master duct and a stop duct are simultaneously uncovered, these parts act to not only throw the corresponding organ stop on by actuating its stop pneumatic but to cutoli or render inactive the playing pneumatic 11"- associated with that note duct in the tracker in line with such stop duct.

Normally, when the master ducts and stop ducts are covered by the note sheet, as shown in Figure 2, the pneumatic valve 18 of the master pneumatic 36 allows atmosphere to enter the passage 108 to inflate the latter and also to enter he conduit 106 for holeing the corresponding valve 105 oi? no master control pouch 103 in its closed position. This permits the duplex valve 115 of the controlling valve 113 to remain in its lowered position and allow atmosphere to enter the passage 119 and conduits 120, 121, whereby the pouch valve l6 is cold closed to render the stop action inoperative and the duplex valve 115 of the controlling valve 122 is raised to open the passage 110 to the suction chan'iber 11% and thereby open the valve 98 of the pouch block 97, so that when a note duct is uncovered the atmosphere is free to pass uninterruptedly closed vto the atmosphere, allowing suction to collapse it and likewise open the corresponding pouch valve 105 of the master control pouch. Atmosphere is then admitted to the i conduit 112 through the ports 109, 110, lifting the duplex valve 115 of the controlling valve 113 and opening the passage 119 and conduits 120, 121 to suction, thereby lowering the duplex valve of the controlling valve 122 to open it to the atmosphere and close the pouch valve 98 to render the relay pneumatic 11 inoperative and simultaneously opening the pouch valve 46 to allow the atmosphere to flow through the sectional conduit 44 and actuate the corresponding stop pneumatic 35 to effect the drawing of the stop. It will thus be seen that the uncovering of a master duct serves to not only connect the stop ducts with their companion stop pneumatics but also to disconnect the .alining playing ducts from their companion playing pneumatics 11.

The leading ends of the master and stop perforations 33, 34, respectively, are disposed in horizontal alinement in the note sheet so that the corresponding master and stop ducts are simultaneously uncovered. However, it is necessary, in the selection of a given stop, that the master duct 31 remain uncovered during the period that the corresponding pair of alining stop and note ducts are uncovered for the reason that the uncovering of a master duct renders the playing duct, in line with the stop duct being selected, dead, or inoperative, and it must remain dead until the stop perforation in the note sheet clears such playing duct.- To this end the master perforation 33 is preferably made long enough to remain in register with its master duct until she stop perforation 34 clears its alining note not.

It is of course understood that those note ducts 11 in the tracker not paired with stop ducts 32 operate as usual. It is also evident from the foregoing that those note ducts paired with the stop ducts are always ready for use and areonly cut off when an alining stop duct is uncovered as called for .by the composition being played. The tracker illustrated in Figure 4 of the drawings has one hundred and five note ducts 11, three master ducts 31 and fourteen stop ducts 32, the latter, by preference, being disposed near the bass or left hand end of the tracker.

Briefly stated, the operation of the mech-. anism is as follows When the instrument is at rest, the stop pneumatics 35, the master Pneumatics 36,

the. relay neumatics 11", and the pneumatics 59 of the retaining stop action are in their inflated, circuit-breaking positions; the

rocker switch 71 including the elements 73, 74 is closed.

Now assume-a music roll to be placed in position and the instrument started. WVhen a master perforation 33 and a stop perforation 34 simultaneously register with companion ducts 31, 32 in the tracker, the corresponding master pneumatic 36 and stop pneumatic 35 are collapsed in the manner heretofore described. The collapse of the master pneumatic prepares the way for the operation of the other parts of the mechanism, particularly the companion stop pneumatic or pneumatics and the on and off mechanism and functions, first, to momentarily open the switch 71 and throw off any stops in the organ which might have been on. However, in this instance, the instrument has just been started and therefore there are no stops on and the switch is simply snapped off and on without affecting any parts which it controls. Simultaneously with this action, the companion valve 105 of the master control pouch is opened which results in the closing of the duplex valve 115 of the controlling valve 113 to the atmosphere, thereby closing the pouch valve 98 to render the corresponding relay pneumatic 11 inoperative and opening the pouch valve 46 to effect the collapse of the stop pneumatic simultaneously with that of its companion master pneumatic, as shown in Figure 3. The collapse of these pneumatics closes the contacts 51, 52 and 54, 55, establishing the circuit which energizes the electromagnet 62 of the retaining stop action and collapsing the corresponding pneumatic 59 so that its contact yoke closes or bridges the contacts 65, 66, 67. The circuit thus completed by the simultaneous collapse of the master pneumatic and its companion stop pneumatic includes the feed wire 16, contact 51, contact yoke 50, contact 52, conductor 56-, contact 54, contact yoke 53, contact 55, wire 57, electromagnet 62 and thence by wire 63 to the generator return wire19. The collapse of the corresponding retaining stop pneumatic 59 brings on the desired stop in the organ in the manner heretofore described. After the perforations 33, 34 have passed the tracker openings 31, 32, both the master pneumatic and the companion stop pneumatic are inflated, their elec tric contacts are broken and the controlling valves 113, 122 and their companion pouch valves 46, 98 return to their normal position, but the retaining pneumatic remains collapsed and the corresponding stop is maintained on due to the fact that the controlling magnet 62 of such retaining pneumatic is still energized through the circu1t including the switch 71, which was previously opened and closed during the collapse of the master pneumatic as heretofore explained.

lt'hen the next set of master and stop perforations in the note sheet uncover corresponding ducts the tracker, the switch '71 is moment rily opened with the result that the retain A stop action pneumatic 59, which has been on inflated; its contacts 65, 6G, 67 are brolren and the stop it controls is cancelled or moved to off position. The stop or stops next to be selected are then automatically rawn in the manner above described.

I claim as in invention Q 1. An automatic musical instrument, comprising a tracker having a row of note-play i1 .1 opening nd a stop-controlling opening paired with of certain note-playing openings, and mea s for rendering the note-playing opening inactive when its paired stop- ;rolling opening is rendered active.

2. An automatic musical instrument, co1nrising a tracker having a row of note-play- 1 openin. a stop-controlling opening 3 J 'ed with y of certain note-playing openif master opening. and means cont t master opening for renderying open ng inactive when stop-controlling opening 1s renree. a t e.

u. no. ...o.aauc musical instrument, comprising a tracker having a row of note-playing on 1 .ud a row of stop-controlling openings z. a1 gcd above and in vertical alinemen with certain. of said note-playing openings. and means for automatically cancelling the note-playing opening when its comp iion mg stop-controlling opening active.

automatic musical instrument. comprising a tracker having a row of note-playopenings an d a stopcontrolling opening ed with of certain notcplaying openinns. a note sl having music perforations V I rectadapted to register with the note-playing opening and a stop perforation adapted. to register with said stop-controlling opening and its companion noteplaying opening, said note-i g openings being normally operative to. playing when uncovered. by corresponding perforations in the note sheet. and means controlled by the note sheet for rendering the. note-playing opening inactive when i s paired stop-controlling opening is rendered active.

An automatic musical instrument, comprising a tracker having a row of note-playing o nings. a stop-controlling opening paired ith an of certain note-playing openings and. a master opening, a note sheet havin m sforatic-ns corresponding to the several clfer openings said note-playing openings being normally operative for playing when uncover ed by the note sheet perforations. and means controlle by the simultaneous uncovering of the master opening and the stop-controlling opening for rendering the latter active and its paired note-playing opening inactive.

6. An automatic musical instrument, comprising a tracker having a row of note-playin g openings and a stop-controlling opening paired with any of certain note-playing openings. a normally active playing action connected with said note-playing openings, a normally inactive stop action connected with said stop-controlling openings, at note sheet having music perforations adapted to register with the note-playing openings and a stop perforation adapted to register with the stopcontrolling opening and its companion noteplaying opening. and means controlled by the note sheet and connected with the playing action and the stop action for rendering the former inactive and the latter active when corresponding pair of note-playing and stopcontrolling openings are uncovered by said stop perforation.

'7. An automatic musical instrument, comprising a tracker having a row of note-playing openings. a stop-controlling opening and a master opening, the stop-controlling opening being paired with any of certain noteplaying openings, a player stop action controlled by the simultaneous uncovering of the master opening and the stop-controllingopening, and means governed by said player stop action. for cancelling the note-playing opening when its companion stop-controlling opening is rendered active.

8. An automatic musical instrument, comprising a tracker having a row of note-playing openings, a stop-controlling opening and a master opening. the stop-controlling opening being paired with any of certain noteplaying openings, a playing action normally operatively connected with said note playing openings. a player stop action operatively connected to the master opening and the stopcontrolling opening. said player stop action being normally inactive and rendered active by the simultaneous uncovering of said master opening and said stop-controlling opening. and a controlling device governed by said pl :1 er stop action for rendering the playing action of that note-opening paired with the stop-controlling opening inactive when the latter is rendered actice.

9. An automatic musical instrument. comprising a tracker having a row of note-playing openings and a plurality of stop-controlling openings paired with certain of said note-playing openings. a note sheet having corresponding note and stop perforations. a playing action normally operatively connect ed with said note-playing openings, a. stop action connected with said stop-controlling openings. and master controlling means for rendering the stop action operative and the playing action inoperative when a stop-controlling opening and a note-playing opening of a pair are uncovered by a stop perforation in the note sheet.

10. An automatic musical instrument, comprising a tracker having a row of note-playing openings and a plurality of stop-controlling openings paired with certain of said note-playing openings, a note sheet having corresponding note and stop perforations, a playing action normally operatively connected with said note-playing openings, a stop action connected with said stop-controlling openings, and means including a master opening in the tracker governed by the note sheet and. operatively connected with the stop action for rendering the playing action of a given note-playing opening inactive and the stop action of its companion or paired stopcontrolling openings active.

11. An automatic musical instrument, comprising a tracker having a row of note-playing openings, a stop-controlling opening paired with any one of the latter and a master opening, a playing action normally operatively connected with said note-playing openings, a stop actionconnected with said stopcontrolling opening, and means governed by said master opening together with said stopcontrolling opening for rendering the stop action operative and the playing action of the companion note-playing opening inoperative.

12. An automatic musical instrument, comprising a tracker having a row of note-playing openings, a stop-controlling opening paired with any one of the latter and a master opening, a playing action normally operatively connected with said note-playing openings, a stop action including an element operatively connected to said stop-controlling opening and an element connected to said i'i'iaster-opcning, and means controlled by the simultaneous actuation of said stop action elements for rendering the corresponding stopcontrolling opening and its associated stop action operative and the companion noteopening and its playing action inoperative.

13. An automatic musical instrument,

comprising a tracker having a row of note-.

playing openings and a stop-controlling opening paired with any one of said noteplaying openings, a'normally active playing action connected with said note-playing openings, a normally inactive stop action connected with said stop-controlling opening, a note sheet having music perforations adapted to register with the note-playing openings and a stop perforation adapted -to register with the stop-controlling opening and its companion note playing opening,

means controlled by the note sheet and connected with the playing action and the stop action for rendering the former inactive and the latter active when the corresponding pair of note-playing and stop-controlling openings are uncovered by said stop perforation,

and a retaining stop action for maintaining such selected. stop action on after said stopcontrolling opening is covered.

14. An automatic musical instrument, comprising a tracker having a row of noteplaying openings, a stop-controlling opening paired with any of said note-playing openings and a master opening, a playing action normally operatively connected with said note-playing openings, a stop action including a pneumatic connected with said stop-controlling opening, a master pneumatic connected with said master opening, and pneumatic controlling means operatively connected to said playing action and to said stop action pneumatic and governed by said master pneumatic for rendering the stop action active and the playing action of its companion note-playing opening inactive.

15. An automatic musical instrument, comprising a tracker having a row of note-playing openings, a stop controlling opening paired with any one of said note-playing openings and a master opening, a playing action connected with said note-playing openings, a stop action connected with said stopcontrolling opening, master controlmeans connected with said master opening, a valve for normally maintaining the note-playing openings in communication with the playing action, a valve for normally maintaining the stop-controlling opening in non-communication with its stop action, and means assooiated with said master control means for governing said valves to render the playing action of a given note-opening inoperative and the stop action of the companion stop controlling opening operative.

16. An automatic musical instrument, comprising a tracker having a row of note playing openings, a stop-controlling opening paired with any one of said note-playing openings and a master opening, a playing action connected with said note-playing openings, a stop action connected with said stopcontrolling opening, master control means connected with said master opening, pneumatic valves associated with said playing action and said. stop action, and a pneumatic device connected with said master control means for governing said valves, said device being normally positioned to render the playing action active and the stop action inactive and to render the latter active and the former inactive when said master opening and said stop opening are simultaneously selected. I

17. An automatic musical instrument, comprising a tracker having a row of note playing openings, a stop-controlling opening paired with and one of said note-playing openings and a master opening, a playing action connected with said note-playing openings, a stop action connected with said stopcontrolling opening, master control means connected wi h said master opening, pouch valves for governii the actuation of the and the stop action, respeccorr ponding tracker i s governed to render the stop action pla -ring action ct .he companinactive. ;ical instrument, comin; a row of noteplaystop-controlling opening one of said note playing 5G1 opening, a playing aci said note-playing openprising' a it. ing open' paired w openings a tion mime i action connected with said stopcontrell opei master control means connected ith master opening, pouch .valves for governing the actuation of the playing action and the stop action, respectively, when their wrresponding tracker openings are uncovered, a controlling valve associated with each oi sa d pouch valves for controlling them, and me ns g vcrned by said master control means for actuating "aid pouch-controlling valves to render the stop action active and the playing action of the companion noteplaying opening inactive.

19. in automatic musical instrument, comprising a tracker having a row of noteplaying openings, a stop-controlling opening paireu with any one of said note-playing openings and a master opening, a playing action connected with said note-playing openings, a stop action connected with said stopcontrolling opening. master control means connected ith said master opening, and operatively connected devices governed by said master means for controlling the actuation of said playing action and said stop action. respectiv 20. An automatic musical instrument, comprising a tracker having a row of note-playing openings, a stop-controlling opening with any one of said note-playing a master opening, a playing acion connected with id note playing open- .ctioa connected with said stopcontrolling o master control means connected n1 .7 id master opening. and operatively connected devices governed by said master means for controlling the actuation of said playing action and said stop action, respec ly the stop action controlling de ice governing the playing action controlling device, whereby aid playing action is normally rende ed ac ve but rendered inactive when the companion stop-controlling opening is uncovered to effectthe actuation of said stop action.

21. An automatic musical instrument, comprising tracker having a row of note-playi rr openings, a stop-controlling opening paired with any one of said note-playing openings and a master opening, aplaying action connected with said note-playing openings, a stop action connected with said stopcontrolling opening master control means connected with said master opening, a stop action controlling valve governed by said master means, and a playing action controlling valve governed by said stop action controlling valve, the stop action valve in its non-selective position rendering the playing action valve operative and in its selective position rendering the playing action valve inoperative.

22. A tracker bar for automatic musical instruments, having a row of note openings, and a supplementary controlling opening paired with any one of said note openings.

23. A tracker bar for automatic musical instruments, having a row of note openings, a row of supplementary controlling openings arranged in vertical line with and paired with certain of said note openings.

24. A tracker bar for automatic musical instruments, having a row of note openings, a supplementary controlling opening paired with any one of said note openings, and a master opening arranged transversely in line with said controlling opening.

25. A tracker bar for automatic musical instruments, having a row of note openings, a row of supplementary controlling openings paired with and disposed above and in vertical line with certain of said note openings, and a master opening arranged transversely in line with the controlling openings and beyond the zone of the note openin 26. In an automatic musical instrument, a tracker having a row of note openings, a row of controlling openings arranged in vertical line with and paired with certain of said note openings and a master opening arranged transversely in line with said controlling openings, and a note sheet having note perforations, controlling perforations adapted to register with said controlling openings and their alining note openings, and a master per foration adapted to register with said master opening, said master perforation being of a length to remain in register with its corresponding tracker opening during the simultaneous registration of one or more of the controlling openings with its companion pair of controlling and stop perforations.

27. A note sheet for automatic musical instruments. having in addition to the usual note sounding perforations, one or more stop perforations in vertical line with certain of said note perforations, and a master perforation.

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