US1047494A - Means for controlling the expression of pneumatic music-players. - Google Patents

Description

R. BUKOWSKY. MEANS FOB. CONTROLLING THE EXPRESSION OF PNEUMATIC MUSIC PL APPLICATION lILED JULY 29, 1911. 1,047,494, Patented Dec.17,1912.

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APPLICATIDN TILED JULY 29 1911.

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R. BUKOWSKY. MEANS FOB CONTROLLING THE EXPRESSION OF PNEUMATIC MUSIC PLAYERS.

' APPLICATION FILED JULY29,1911.

1 ,O47,494, Patented Dec. 17, 1912.

5 SHEETS-SHEBT 3,

R. BUKOWSKY. MEANS FOR CONTROLLING THE EXPRESSION or PNEUMATIC Music PLAYERS. APPLIOATION FILED JULY 29, 1911. 1,Q47,494 Patented Dec. 17, 1912.

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R. BUKOWSKY.

MEANS FOR CONTROLLING THE EXPRESSION OF PNEUMATIC MUSIC PLAYERS.

APPLICATION rum) JULY 29, 1911.

1 ,O47,494;, Patented Dec. 1'7, @912.

5 SHEETSSHEET 5v REINHOLD BUKOWSKY, OF NEW YORK. N. Y.

MEANS FOR CONTROLLING THE EXPRESSION OF PNEUMATIC MUSIC-PLAYERS.

Application filed July 29,

Specification of Letters Patent.

Patented Dec. 1.7, 1912.

1911. Serial No. 641,276.

To all whom it may concern:

Be it known that I, REINHOLD BUKowsKY, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in.Means for Controlling the Expression of Pneumatic Music-Players, of which the following is a specification.

My improvements relate to pneumatic apparatus in which a perforated music sheet traveling over a tracker board controls the action of note-pneumat-ics in the manner well known in the art,- said note-pneumatics being connected inv'lividually and collectively with an action tension or work chest, or in series with two or more such action tension work chests. as for instance I treble and bass work chests. as may be desired or found most expedient. according to requirements of use and capacity.

My invention relates more particularly to the means provided for effecting and gov crning the expression or accentuation of the music as rendered by the apparatus, either automatically through the medium of the music sheet, pneumatically through the medium of a push button or equi *alent mechanical expedient. or mechanically by means of manually actuated lever mechanism. as hereinafter more fully described and claimed specifically.

In the accompanying (l 'awings. Figure t. represent a sectional elevation. more or less diagrammatic. of the parts of the apparatus essential to an understanding of the practi al embodiment of my improvements in a pneumatic nu sic player of the class desig natcd; the several parts being represented at rest or in their normal positions with relation to each other: Fig. 2. is a similar view upon an enlarged scale, of the accentuating valve chest and tension governor. the parts being shown in the relative positions assumed during long or continuous accen- 1 tuation for the time being.v'. (:1. while the throttle is governed through the medium of an auxiliary valve controlled by the tracker board and music sheet; Fig. 3. is a similar view showing the parts in the relative positions assumed when the accentuation is effected manually: Fig. 4, is a. similar view showing the parts in the relative positions assumed when the accentuation is effected incumaticallv by means of a )ush button. 1 I,

i sy l: 1g. 0 is a similar view showing a modifica tion in which the action of the movable valve seat pneumatic reversed to etl'ect a lowering of tension when the governor is used for normally high tension.

in the accomi'uinyiug drauings .i. r presents a perforated music sheet supported by and between the usual rollers a. o. and traveling over a tracker board B. ot" any known or desired construction. th air ducts in said tracker board communicating as usual with notepneumatics. except: the. last two ducts 7. 0. sh wn in the pre ent case for convenience at the right hand end ol' the row of said tracker ducts. In this connection attention may be called to tllt well known fact that the accentuating perform tions in the music sheet are customarily arranged at or near the edge tl *reot beyond the note perforations in a situation where either a long. continuous slot. or a line of closely related successive perforations are f both objectionable in that they wcakcn the edge of the sheet, allowing it to warp or curl. thereby not only impairing the sheet but rendering it inettectivc and unccrt: in in operation in so far as aecentuation is concerned at least. Thus, even if the music l sheet is not rendered inoperative as a whole by such accentuation perforations its life and usefulness are limited and restricted. These objectionable features I overcome by i the provision of an auxiliary valve arranged to keep the accentuating pneumatic deflated for a period prescribed by means of a selfsustaining pouch or diaphragm controlled by special ducts in the tracker board as hereinafter described. In order to portray the practical embodiment of this important feature of my invention I have herein indicated essential parts of the apparatus without intending to restrict myself to the identical construction shown. in which C, represents the :u-centuating valve chest generally. 5 and I), the variable tension governor chamber.

v The variable tension chamber Dds formed with a i'novable member I]. connected with a spring (I'. which tends constantly to retract said movable member and maintain the maximum capacity of said tension chamber l). in which situated the movable valve seat E. communicating by means of a flexible connection c. with an exhaust block 0',

communicating through suitable conduits c with the main bellows or exhaust mechanism of any desired or well known character,

A valve blade F, is pivotally attached near one extremity to the movable valve seat E, to act in conjunction with the exhaust port c, in said seat the other extremity of said valve blade F, being pivot ally connected by a pitman r7 with the movable member (Z, of the tension chamber D, so that the tendency of the spring d'gacting through said movable member 03, is to draw and hold the valve blade F, away from the movable valve seat E, and to pen the ex haust port c. This tendency to open the exhaust port a, is counteracted in part by a spring 0 interposed between the movable valve seat E, and a stationary part e,the action of the spring being limited by a stop 6, which is preferably adjustable, and which limits the upward thrust of the said movable valve seat E.

in a similar manner the inward thrust of the movable member (Z, may be limited by an adjustable stop d carried by said movable member and arranged to contact with a stationary part (as d",). When this happens, and the movable valve seat is resting against the stop (3 the valve blade F, will very nearly but not quite close the exhaust port 6". Hence it will be seen that the area of the exhaust port 0*, may be increased or dimin ished within certain limits by the movements of either the valve blade F, or the movable valve seat E, or both) with relation to each other.

The variable tension chamber D, is connected by a suitable conduit d, with the action or work chest 7, communicating with the note-pneumaties, which are arranged and operated as heretofore by means well known in the art; and the normal working tension in said action chest V, will be maintained, equalized and conuiensated for by the movable member (l, acting as a governor through the medium of the valve blade F, to control the effective area of the exhaust port 6, in accordance with the requirements of the noteq'ineumatics as actuated by the note-perforations in the music sheet as the latter passes over the tracker board.

The normal tension thus being provided for and maintained automatically, by the movable governor member (Z, and the valve blade F, in conjunction with the valve seat E, in its normal position, I effect accentuation by providing for the movement of the movable valve seat E, with its exhaustport 6 away from said normal position and from the valve blade F, by three different methods, as hereinbefore intimated.

Thus, presuming that the valves &c. are arranged to operate vertically as shown in the drawings, and the parts being in the normal position shown in Fig. 1, the depression of the movable valve seat E, against the re sistauce of the spring 6 may be effected manually by means of rock lever G, as indicated in Fig. 3, actuated through the medium of a finger lever Q, and intermediate connecting rod g',-the shorter arm ,1}, of said rock lever G, being bifurcated and straddling the pendent link ll, pivotally attached to the movable valve seat E, and protruding through a packed bearing it, in the bottom of the variable tension chamber D. In this case the under side of the short arm 9 ot the rock lever G, acts against a contact button it, which is adjustable upon the threaded end of the pendent link I1, so that by regulating the position of the contact button h, on said link H, the available thrust of the rock lever Gr, may be regulated with accuracy. The downward thrust or depression of the movable valve seat E, regulated however, by an adjustable stop if, on the pendent link H, which stop if, contacts with a stationary part (as the floor of the tension chamber D,) when the prescribed degree of motion is attained,--thc stop 0, limiting the upward thrust of the movable valve seat E, as before stated.

I thus provide for individual, manual accentnatiou of the music at the will and inclination of the performer independent of the perforated music roll, accentuating valves &c., by putting him in direct control, mechanically, of the movable valve seat E, by

means of which he can instantaneously vary the tension in the work chest VV,-the movable valve seat E, being returned automatically to its normal position against the stop 0, as soon as released, by means of the spring 6 The accentuation may also be effected automatically and pneumatically through the medium of the acceutuating valve chest C, by which the action of the movable valve seat pneumatic I, is controlled,-said pneumatic acting on the pendent link H, in a manner similar to the rock lever G, as here iuafter set forth.

All the chambers and passages marked '1), in the accentuating valve chest (1, communicate with the main exhaust mechanism through the port V.

J, is the primary valve operated by the diaphragm j, by air admitted through the duct b, in the tracker board B,-said duct 1), communicating with the diaphragm chamber 7", on the under side of the diaphragm through the conduits j j. j.

7' is a bleed for the passage j The primary valve J controls the conduit j. communicatinowith the diaphragm chamber 71*, on the under side of the diaphragm lit, by which the secondary valve K, is actuated, said secondary Valve K, controlling the passage ]f, to the movable valve seat pneumatic I. When in said normal position the secondary valve K, covers the duct m, connnunicating with the conduitm, which extends under the diaphragm chamber m (which opens into it) and thence upward to the duct 771: closed normally by the. clack *alve N. The conduit m, communicates through the tubes m, m, with the auxiliary duct 5, in the tracker board B. A bleed we, also communicates with said conduit m. The auxiliary or continuous accentuation valve P, is actuated by whatmay be designated as the self-holding pouch or diaphragm p, situated in the diaphragm chamber m. In its normal position the auxiliary valve P, closes the port 1", communicating with the tension spaces 1 of the accentuation valve chest C. When raised it opens said port i to the passage 0, and closes the air port 0 at the same time raising the clack valve N, and thereby opening the duct m Under these conditions, the rise of the auxiliary valve I, having shut off communication'with the atmosphere through the port 0 there will be a balance tension on either side of the secondary valve K, which balance is overcome by the upper diaphragm is, communicating with the atmosphere 'through the duct 71, thereby seating the said secondary valve K, in its lowest position covering the duct m.

The conduits m and j, are connected respectively with ports 9, Q, in a stationary port plate Q, to which is fitted a slidable port plate R, containing the ports r, r, with which the tubes mi, and j communicate respectively. The stationary port plate Q, is also formed with a third port q, communicating with the port 8, which is closed normally by a spring valve 5, which may be depressed by means of a push button 5, (see Fig.

lV hen the slidable port plate R, is in the position shown in Figs. 1 2 and 3, the ports 2*, r, are in coincidence with the ports g, 11, and the accentuation valve chest C, is in communication with the tracker board B. hen the slidable port plate R, is moved into the pcsition shown in Fig. 4, by means of a hand lever r", or equivalent mechanical expedient, the port r, is cut out, and the port 2", brought into coincidence with the intermediate port (f, thereby establishing communication between the press button port. a. and the diaphragm chamber j, of the primary valve J. Under these last named conditions. the depression of the push button 5. admitting air through the port a, and conncctions, causes the diaphragm to ra se the primary valve .T,thorcby cutting off the conduit j", from the tension space 7, and admitting air to said conduit j, to raise the diaphragm it", under the secondary valve K. As a result the secondary valve K, cuts off communication between the passages c, and L and puts the latter in communication with the tension space'w, thereby deflating the movable valve seat pneumatic I. The collapse of the valve seat pneumatic I, causes its bifurcated arm a, to act against the contact button h, on the pendent link H, and thereby depress the movable valve seat E, againstthe resistance of the spring a". This action, by increasing the'available area of the exhaust port as related to the blade valve I", immediately creates a relatively high degree of tension in the variable tension chamber D. and the work chest \V, and this is maintained until the push button S, is released, when the bleed i, releases the primary valve J, and the parts named in the operation just described return to their normal positions, with the movable valve seat E, again contacting with the stop 6.

The stop d, on the movable governor member (I, of the variable tension chamber D, is so adjusted that when it contacts With the stationary part d", the valve blade F, will very nearly but not quite close the exhaust port c, when the valve seat is resting against the stationary stop 6, as illustrated in Fig. 1, and from these relative positions the opening of the area of the exhaust port 6, will vary according to the requirements of the work chest W.

Supposing the slidable port plate R, to be returned to its normal position as in Figs. 1, 2, and 3, and the acccntuation to be provided for by perforations forn'ied in the usual way heretofore in vogue in music sheets.-2'. a, by perforations a, in line with the duct 5, in the tracker board B. air admitted through said duct I), will pass through the tube j", ports 9, and 1", tube j and conduit j to the under side of the diaphragm j, raising the primary valve J,thereby admitting air to the conduit 1'", to raise the secondary valve K, closing the passage l, to atmospheric pressure and opening it to tension thus deflating the movable alve seat pneumatic l. pulling down the movable valve seat E, and crcatmg high tension as hereinbefore set forthw the recovering of the duct 1/, in the tracker board l3, by the music sheet allowing the bleed f, to return the parts to their normal posit ions.

Hence my apparatus is adapted to effect accentuation by means of the ordinary 'music-- roll heretofore known and used without alteration or special adjustment of parts. But in order to effect prolonged acccntnatimi without weakening the edge of the music sheet with a long slot or series of successive close perforations I provide the acccntuation valve chest t. with the auxiliary valve 1, and the tracker board with the auxiliary duct Z). for actuating said valve P,---the music sheet being formed with Oneor more perform ions (as required by l.l inn with said auxiliary duct mcntal perforatioi'is a, being htl eltmggated and be inning slightly '1; advance of th note or notes to be -t Ziil'tiillltllPtl, as to prepare, slightly A atlvanctx the aux: airy valve VP, for such long accentnation or solo effect.

Air pressure admitted through the duct Z), passes through the tube in, ports and r, and tube mi to the ctmdnit m, in the actfillltl ing valve cheer {3, from which it on tors ltn diaphragm chamber of, causing the t to raise the auxiliary or con 1 nation za'vc 1 thereby clos- E.- -\l3i' port and opening the The secondary valve K, need, covering; the duct m, and held uinl 'fll'liti'lC pressure acting on. the I the trn i' 7', acting" through the port tees w, and Zr", defiates he movable alw nftll pneumatic tl'iereby the movable vu 'tt l l, and

i h variable ,ision diaphr" the 1121' fiiap l creat in l the alve stem admitting at it the duct m in on the t' l i phrae'ni in then raised nning the accentun the music ,lemental and the d 137 all setting 2 and clack tn;iliont*the wnt nu 'is perin the muof the tirest'cribed music *0 tracker th J 1 t, supplemen- :i-*vi-n uatio!i p; z and there-- perforation u, il im t-oniimious and for wntinuwo Hit" tilt,

\llh "l'ln effect of admi :ztr pressure t, and duct t-elve J, as her-e ini tingatmosnun? j, to raise wish the medium h is of larger su pcrlicial area than, the il origin in", and

therefore predominates t r these conditions the main result; of i --n;.; the secondary valve K, is to once the duct W, 5-5 (which is of greater area the air-duct through the relea e peri is to raise the primar;

inbefore described; therch.

phcric pressure to the the secondary valve K. the

so of the diaphragm Z.

m",) to tension 4), which, acting through the conduit m, and diaphragm chamber m re leases the auxiliary valve I, and hence the clack valve N, also. The passage of the perforation a, in the music sheet beyond the duct 7), in the tracker board having released the primary valve J, the conduit j, is again put in communication with tension 2*, allow ing the secondary valve K, to descend and open the passage le to atmospheric pressure through the passage 6, thereby inflating the pneumatic I, and releasing the movable valve E.

This feature of maintaining accentuation continuously for a prescribed period and length of music roll by a setting and a releasing perforation therein without an in tervening opening of any kind in so far as they are concerned, is an important practical advantage in that the strength and in tcgrity of the music sheet are insured and maintained Where most needed, near the edge of the roll, Furthermore, the continuous accen'tinttion is rendered more positive and t-li'cclive because maintained independently as long as the music sheet covers and seals the releasing duct 7), in the tracker board B, a function it is Well adapted to perform owing to its smoothness and coutinuity of surface between the auxiliary or setting perforation a, and the said releasing perforation a.

It will be seen that by my combination and arrangement of parts I adapt the are i ratus to all possible requirements of u e in so far as accentuation is concerned. That: to say the performer can, by mechanical means, in Fig. 3, manually and ins' taneously change from low to high tension; or, by the slidable port block B, being: suitably adjusted. as in Fig. 4, the same re alt may be attained pneumatically by means of a push button or equivalent, thus in either case adapting the apparatus to individual requirements or fancy in musical expres sion. On the other hand, prescribed ac centuation may be effected automatically by the music sheet, either as prepared hereto fore, or as specially prepared as herein set forth to operate and control the auxiliary continuous accentuating valves P,'and N, the presence of the two latter not interfering with the accentuation through a single duct 7), in the tracker board B, by succeeding perforations a, in alinement with each other as heretofore.

In any case a quick response and change from low .to high tension, or vice versa', may be attained by reason of the use of the movable valve seat E, in conjunction with. the governor member (1, of the variable tension chamber 1). and the pivotally mounted and connected alve blade ll.

In this connection it may be noted that the secondary valve in the present case performs a three fold function. In the first place it performs its ordinary function when the accentuation is effected as heretofore by .means of a single line of perforations in mary and secondary valves in the usual way, by uncovering the duct m, and creating tension under the diaphragm p, the bleed m, acting to neutralize the pressure on both sides of said diaphragm p,it being understood that the relatively large area of the duct m, as compared with that of the air duct m is sutficient to overcome the latter and insure the collapse of the diaphragm 7).

My variable tension chamber accentuation valve chest and connections may be readily applied, assembled, to or embodied in, automatic players as generally constructed.

The auxiliary valve P, may be designated as aprolonged-accentuation valve; and obviously any form of air :valve controlled thereby may be substituted for the clack valve shown, with like result.

The first four figures of the accompanying drawings show my invention as applied to what is known as a normally low tension governor, the aecentuation or variation of expression in playing being effected by a ter'nporary or prolonged increase of tension in the governorD, and w rk chest (T, as may be desired, and as hereinbctore set forth. In Fig. 5 I show the invention as adapted to a normally high tension governor and work chest, the only change being thatthe movable valve seat pneumatic I, is reversed in position and action so as to push the movable valve seat/E, up toward the blade valve F,the movable member (Z, being held down normally by the exhaust as shown in said Fig. 5, with the stop (i resting against a stationary part (2, thereby insuring an open port a, for high tension, and the raising of the movable valve seat E, lowering the tension by contracting the are'a ot the port ethis arrangcment the c'o'ntact shoulders-11", [L3, on the pendent-dink H, are reversed as'i relatecl to the bearing arms 2', and .-,iS0:[tl1Lt the latterpu'shiupward in actionglinstead of pulling down. Likewise the spring 6, is arranged so as to tend constantly to depress the movable valve seat E, with the stop k resting against a stationary part as shown in said-lfiig. 5.

than in this reversal of action of the movable port block E the various operations are the same as hercinbeforc described in connec tion with the 'lirst. four figures of the drawings.

\Vhat I claim and desire to secure by Letters Patent, is-

1. in automatic apparatus of the character designated, the combination of a pneumatic adapted to actuate an operative part, a valve chest communicating wit-h said pneumatic, a primary and a secondary valve therein arranged to control said pneumatic,

an auxiliary valve in said valve chest arranged to prolong the deflation of said pneumatic, a diaphragm arranged to actuate said auxiliary valve, a clack valve actuated by said auxiliary valve to inflate said diaphragm, a valve arranged to deflate said .diaphragm, and means for controlling said valve pneumatically, for the purpose se forth.

2. In automatic apparatus of the character designated, the combination of a pneutherein arranged to control said pneumatic, an auxiliary valve in said valve chest arranged to prolong the deflation of said pneumatic, a diaphragm arranged to actuate said auxiliary valve, a clack valve actuated by said auxiliary valve to inflate said diaphragm, a valve arranged to deflate said diaphragm, and a tracker board, ducts and connections for controlling said valve by means of a perforated music sheet, for the purpose described.

3. Pneumatic musical apparatus of the character designated, comprising an action chest,- a variable tension chamber interposed between said action chest an. the exhaust mechanism, a movable valve seat in said variable tension chamber communicating with the exhaust'mechanism, a movable governor member forming part of said variable tensitn chamber, resilient means tending to hold said governor member in its normal position, a valve blade pivotally connected with said governor member and with relation to the exhaust port in said movable valve'seat resilient means tending to hold "diaphragm arranged to actuate said accentuating valve, a valve controlled by said accentuating valve and arranged to admit atmospheric pressure to said diaphragm when the accentuating valve is raised, a valve arranged to deflate said diaphragm, and a tracker board, ducts and connections for controlling said valves by means of a perforated music sheet, for the purpose described.

4. In pneumatic musical apparatus of the character designated, the combination of an action chest, a variable tension chamber interposed between said action chest and the exhaust mechanism, a movable valve seat in said variable tension chamber communicating with the exhaust mechanism, a movable governor member forming part of said variable tension chamber, resilient means tending to hold said governor member in its normal position, a valve blade pivotally connected with said governor member and with relation to the exhaust-port in said movable valve seat, resilient means tending to hold said movable valve seat in its normal position, a pendent link connected with said movable valve seat and projecting from the variable tension chamber, a contact shoulder on the outer portion of said pendent link, a pneumatic for operating said movable valve seat formed with a bearing for engaging with said contact shoulder on the pendent 7 link, an accentuating valve chest communicating with said pneumatic, primary and secondary valves therein controlled by the tracker board and connections, an auxiliary accentu'ation valve in said valve chest also controlled by the tracker board and connections and controlling the inflation and deflation of said pneumatic, adiaphragm arranged to actuate said accent-uatingv valve and a valve controlled by said accentuating valve and arranged to admit atmospheric pressure to said diaphragm when the accentuating valve is raised, as and for the purpose set forth.

5. In pneumatic musical apparatus of the character designated, the combination of an action chest, a variable tension chamber interposed between said action chest and the exhaust mechanism, a movable valve seat in said variable tension chamber communicating with the exhaust mechanism, a movable governor member forming part of said variable tension chamber, resilient means tending to hold said governormember in its normal position, a valve blade pivotally connected with said governor member and with relation to the exhaust port in said movable valve seat, resilient means tending to hold said movable valve seat'in its normal position, a pendent link connected with said movable valve seat and projecting from the variable tension chamber, a contact shoulder on thexniter portion of said pendent link, a

pneumaticfor operating said movable valve seat formed with a bearing for engaging with said contact shoulder on the pendent link, an accentuating valve chest communieating with said pneumatic, primary and secondary valves therein controlled by the tracker board and connections, an auxiliary accentuating valve and diaphragm in said valve chest also controlled by the tracker board and connections, a valve actuated by said auxiliary accentuatingvalve to inflate its diaphragm, and a duct controlled by the secondary valve and arranged to deflate the said diaphragm of the auxiliary accentuat ing valve, substantially in the manner and for-the purpose described.

6. In pneumatic musical apparatus of the character designated, the combination of an action chest, a variable tension chamberin terposed between said action chest and the exhaust'mechanism, a movable valve seat. in" said variable tension chamber commuunicat ing with the exhaust mechanism, a movable governor member forming part of said vari able tension chamber, resilient means tending to hold said governor member in its normal position, a valve blade pivotally con nected with said governor member and with relation to the exhaust port in said movable valve seat, resilient means tending to hold said movable valve seat in its normalposition, a pendent link connected with said movable valve seat and projecting from the variable tension chamber, a contact shoulder on the outer portion of said pendent link, a pneumatic for operating said movable valve seat formed with a bearing for engaging with said contact shoulder on the pendent link, an accentuating valve chest communi eating with said pneumatic, primary and secondary valves therein controlled by the tracker board and connections, an auxiliary accentuating valve and diaphragm in said valve chest controlled by the tracker board and connections, a valve actuated by said auxiliary accentuating valve to inflate its diaphragm, a duct controlled by the secondary valve and arranged to deflate the said diaphragm of the auxiliary accentuatmg valve, and an auxiliary diaphragm communicating with the atmosphere and bearing upon the secondary valve, for the purpose set forth. 1

7. In pneumatic musical apparatus of the character designated, a governor comprising a variable tension chamber connected with a chamber from which air is to be withdrawn, a movable valve seat in said variable tension chamber connected with exhaustmechanism, a retractile spring connected directly with said movable valve seat and with a stationary part of the said variable tension chamher and tending to hold said movable valve seat in contact with a stop prescribing the normal position of said movable valve seat, said stop, a movable member forming part of said variable tension chamber, an external retractile springconnected with said movable member and with a stationar part and tending constantly to hold. sai movable member in its normal position, a valve blade pivotally connected with said movable member and with relation to the exhaust port in said movable valve seat, a pendent link connected with said movable valve seat and projecting from the variable tension chamber, a contact shoulder on the outer portion of said pendent link, a pneumatic for operating said movable valve seat formed with a bearing for engaging with said contact shoulder on the pendent link, an actuating valve' chest communicating with said pneumatic, primary and secondary valves therein controlled by a manually operated air inlet valve through the medium of an air duct communicating, with the primary valve and said air duct and manually operated air inlet valve, arranged and operating as and for the purpose set forth.

' 8. In pneumatic musical apparatus of the character designated, a governor comprising a variable tension chamber connected with a chamber from which air is to be withdrawn, a movable valve seat in said variable tension chamber connected with exhaust mechanism, a retractile spring connected directly with said movable valve seat and with a stationary part of the said variable tension chamber and tending to hold said movable valve seat in contactwith a stop prescribing the normal position of said movable valve seat, said stop, a movable member forming part of said variable tension chamber, an external retractile spring connected with said mov able member and with a stationary part and tending constantly to hold said movable member in its normal position, a valve blade pivotally connected with said movable member and with relation to the exhaust port in said movable valve seat, a pendent link conncctcd wit h said movable valve seat and pro-' jecting from the variable tension chamber, a contact shoulder on the outer portion of said pcndcnt link, a pin-lunatic for operating said movable valve scat formed with a bearing for engaging with said contact shoulder on the pendent link, an accentuating valve chest communicating with said pneumatic, primary and secondary valves in said valve chest controlled by a manually operated air inlet valve through the medium of an air duct communicating with the primary valve, andalso controlled by the tracker board and connections, an auxiliary accentuating valve and diaphragm in said chest also controlled by the tracker board and connections, an air inlet valve actuated by said auxiliary acccntuating valve, and a slidablc port plate for varying connections between the coin duits to the said valve chest, the tracker board and the manually operated inlet: valve, as and tordhc purpose set forth. I 9. ln pneumatic musical apparatus of the charm-tor designated, the combination of an action chest, :1 variable tension chamber interposed between said action chest and the exhaust mechanism, a movable valve scat in said variable tension chamber communicat' ing with the exhaust mechanism, a movable governor member forming part of said va-- riable tension chamber, resilient means tending to hold said governor member in its nor mal position, a valve blade pivotallv connected with said governor member and with relation to the exhaust port in said movable valve seat, resilient means tending to hold said movable valve seat in its normal position, a pendent link connectedwith said movable valve seat and projecting from the variable tension chamber, a contact shoulder on the outer portion of said pendent link, a pneumatic for operating said movable valve seat formed with a bearing for engaging with'said contact shoulder on the pendent link, an acoentuating valve chest c0mmunieating with said pneumatic, primary and secondary valves therein controlled by the tracker board and connections, an auxiliary accentuating valve and diaphragm in said valve chest also controlled by the tracker board and connections, and a manually operated air inlet valve and connections and controlling the inflation and deflation of said. pneumatic communicating with said primary valve, for the purpose described.

10. In pneumatic musical appara us of the character designated. the combination of an action chest, a variable tension chamber interposed between said action chest and the exhaust mechanism. a movable vain: seat in said variable tcnsion chamber communieating with the exhaust mechanism. a movable governor member forming part of said variable tension chamber, resilient means tending to hold said go\ ernor member in its normal position. a valve blade p votally coir ncctcd with said governor member and with relation to the exhaust port in said movable valve seat, resilient means tending to hold said movable valve seat in its normal posi tion, a pendent link connected with said movable valve seat and projecting from the variable tension chamber, a contact shoulder on "he outer portion of said pendent link, a pneumatic for operating said movable valve seat formed with a bca ring for engaging with said contact shoulder on the pendent link, an acccntuating valve chcst communicating with said pneumatic, primarv and secondary valves therein controlled by the tracker board and connections. an auxiliary accentuating valve and diaphragm in said valve chest also controlled by the tracker board and connections and controlling the inflation and deflation of said pneumatic, and a slidable port plate for varying the connection between the primary valve conduit, the manually operated air valve Conduit, and the tracker board conduits, for the purpose set forth.

11. In pneumatic musical apparatus of the 1 character designated, the combination of an action chest, a variable tension chamber in tel-posed between said action chest and the exhaust mechanism, a movable valve seat in i said variable tension chamber communicating with the exhaust mechanism, a movable governor member forming part. of said val riable tension chamber, resilient means tending to hold said governor member in its normal position, a valve blade pivotally con nected with said governor member and with relation to the exhaust port in said movable valve seat, resilient means tending to hold said movable valve seat in its normal position, a. pendent link connected with the mov able valve seat and projecting from the va riable tension chamber, a contact. shoulder on the outer portion of said pendent link, a rock 1 lever arranged to engage with the contact 1 shoulder on said pendent link, me for actnating said lever manually. a mad co I tact shoulder on the outer portion of said pendent link, a pneumatic formed with a bearing for engaging with said second shoulder on the pendent link, an accentuating valve chest communicating with said pneumatic, a primary and, a secondary valve in said chest. actuated by the tracker board and connections arid controlling said pnew matic. for the purpose described.

12. In pneumatic musical apparatus ot the character designated, the combination of an action chest, a variable tension chamber interposed between said action chest. and the exhaust mechanism, a. lTlOVtlblQ valve seat in said variable tension chamber mamuunicatt ing with the exhaust n'iechanism. a movable governor member forming part of said vari- Q able tension chamber. resilient means tendt ing to hold said governor member in itst normal position, a valve blade 'iivotally coir l nected with said governor member and with relation to the exhaust port in said movable valve seat, resilient means tending to hold said movable valve seat in its normal position, 5. pendent link connected with the mov able valve. seat and tn'ojccting from the variable tension chamber, a contact shoulder on the outer portion of said pendent link, a rock lever arranged to engage with the contact shoulder on said pendent link, means for actuatim said lever manually, a second contact shoulder on the outer portion of said endent link, a pneumatic formed with a caring for engaging with said second shoulder on the pendent link, an accentuating Valve chest communicating with said pneumatic, a primary and a secondary valve in said chest actuated by the tracker board and connections and controlling said pneumatic, and an auxiliary prolonged-accentuation valve in said valve chest also emtutted by the tracker board and connections, for the purpose described.

1 an action chest, a nu able tcu said pendent lint;

; and connectim seat in said variable intert'ioscd betn c exhaust mecha: said variable tcnsiowl =7 ing with the, cxhzz -i t zne han. governor member tori i able tension ehamh ing to hold sai normal p nected w? relation t..: t valve said mova tion, a perm able at tilt ut.

rock lever n3; any :1 'bozddce l'or actuat ng contact shonh toe ater portion of a. pneumati termed with a bearing for cn; ;aging with second shoulder on the p udent link. an a centuating valve chest conunonicating with said pneumatic, a prism ondar in said. chest .1 t h the tracker board l controlling said pneu ilongeddurcntuation vaive in said valve best also actuated by the tracker board and 0h]'i"'ll 'il$, and a manually actuz'lled air min 1 Mamet-lions communicating with the. l v'Z'lfil-Jy valve. for

matic, an a 3 t e purpose descrilasd.

ll. ln pncua'uatie nuisi-"al apparatus of the. character designated, tlu combination of an action chest. a variable tension chamber interposed between .ntltl action chest and the exhaust mechani a movable valve it sion chamber comnnjinicating with the exhaust inechanisui, a movable governor ir rnb-za' forming part of said. variable tension chamber, reailicnt means tending to hold l governor :urzn

her in its normal position. a valve blad pit'otally connected with said governor member and with relation to the exhaust port. in said movable valve seat, resilient means tending to hold said movable valve seat in its normal position, a, pendent link (onnecled with the movable valve seat and projecting from the variable tension chamber. a contact shoulder on the. outer portimrot' said pendent link, a rock ievcr arranged to engage with the contact. shoulder on said pendent link, means for actuating said lever umnnally, a second contact shoulder on the outer portion of said pendent li a their matic formed. with a. bearing" (or engaging with said second shoulder on the pemlent link, an accentuating valve chest comn'iunicatingwith said pneumatic, a primary and a secondary valve in said chest actuated by the tracker board and connections and controlling said pneumatic, an auxiliary prolonged-accentuat-ion valve in said valve chest also actuated by the tracker board and connections, a manually actuated air valve and connections communicating with the primary valve, and a slidable port plate for varying the connections between the primary valve conduit, the manually actuated air valve conduit, and the tracker board conduits, for the purpose set forth.

15. In pneumatic musical apparatus of the character designated, the combination of an action chest, a variable tension chamber interposed between said action chest and the exhaust'mechanism, a throttle device in said variable tension chamber, a pendent link connecting with said throttle device and protruding from the variable tension chamber, a pneumatic engaging with said pendent link, an accent-uating valve chest communieating with said pneumatic, primary and secondary valves in said valve chest operated through the medium of the tracker board and connections and controlling the inflating and deflating of said pneumatic, and an auxiliary prolonged-accentuation valve in said valve chest also actuated through the medium of the tracker board and connections, for the purpose set forth.

16. In pneumatic musical apparatus of the character designated, the combination of an action chest, a variable tension chamber interposed between said action chest and the exhaust mechanism,-a throttle device in said variable tension chamber, a pendent link connecting with said throttle device and protruding from the variable tension chamber, a pneumatic engaging with said pendent link, an accentuating valve chest communicating with said pneumatic, primary and secondary valves in said valve chest operated through the medium of the tracker board and connections and controlling the inflating and deflating of said pneumatic, an auxiliary prolonged-accentuation valve and its actuating diaphragm in said valve chest also operated through the tracker board and connections, and an air inlet valve actuated by the said auxiliary accentuating valve to inflate its diaphragm, for the purpose described.

17. In pneumatic musical apparatus of the character designated, the combination of an action chest, a variable tension chamber interposed between said action chest and the exhaust mechanism, a. throttle device in said variable tension chamber, a pendent link connecting with said throttle device and protruding from the variable tension chamber, a pneumatic engaging with said pendent link, an accentuating valve chest communicating with said pneumatic, primary and secondary valves in said valve chest operated through the medium of the tracker board and connections and controlling the inflating and deflating of said pneumatic, an auxiliary prolo1iged-accentuation valve and its actuating diaphragm in said valve chest also operated through the tracker board and connections, an air inlet valve actuated by the said auxiliary accentnating valve to inflate its diaphragm, and a tension duct in said valve chest controlled by the secondary valve and arranged to deflate the diaphragm of said auxiliary acccntuating valve, for the purpose described.

REINHOLD BUKOXVSKY.

\Vitnesses M. B. MENDELL, LILLIA MiA'i'r.

00p!" of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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