US1093546A - Pneumatic valve. - Google Patents

Pneumatic valve. Download PDF

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US1093546A
US1093546A US76813013A US1913768130A US1093546A US 1093546 A US1093546 A US 1093546A US 76813013 A US76813013 A US 76813013A US 1913768130 A US1913768130 A US 1913768130A US 1093546 A US1093546 A US 1093546A
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pneumatic
valve
tube
diaphragm
compartment
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US76813013A
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Judson Rogers De Noyelles
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Judson Rogers De Noyelles
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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10FAUTOMATIC MUSICAL INSTRUMENTS
    • G10F1/00Automatic musical instruments
    • G10F1/02Pianofortes with keyboard

Description

J. R. DE NOYELLES.
PNEUMATIC VALVE.
APPLICATION FILED MAY 16, 1913.
1,093,546. Patented Apr. 14, 1914.
2 SHEETS-SHEET l.
COLUMBIA PLANOGRAPH 60 WASHINGTON. D. cv
J; R. DB NOYELLE S.
PNEUMATIC VALVE.
APPLICATION FILED MAY 16, 1913.
1,093,546, Patented Apr. 14, 1914.
2 SHEETS-SHEET 2.
f1? Z70 flayeZZe s -oLuMmA PLANOGRAPH ccnv WASHINGTON. n. c.
awe/Mo's I UNITED STATES PATENT OFFICE.
JUDSON ROGERS DE NOYELLES, OF BINGI-IAMTON, NEW YORK.
PNEUMATIC VALVE.
Specification of Letters Patent.
Application filed May 16, 1913. Serial No. 768,130.
To all whom it may concern Be it known that I, Jonson Rosnns DE NoreLLns, a citizen of the United States, residing at Binghamton, in the county of Broome and State of New York, have invented new and useful Improvements in Pneumatic Valves, of which the following is a specification.
The invention relates to apneumatic for mechanically played musical instruments, and more particularly to the class of valved pneumatics of player pianos.
The primary object of the invention is the provision of a pneumatic wherein an air vent and bleed tube is arranged so as to assure proper working of the valve and also which will permit the cleaning of the diaphragm chamber so as to prevent the accumulation of dust and foreign matter therein which necessarily results in impeding the action of the valve or preventing the perfect working thereof for controlling the hammers while the instrument is being played.
Another object of the invention is the provision of a pneumatic wherein the valve is limited in its movement and guided to and from its seat so as to assure the accu rate seating of the valve and preventing excessive movement thereof, which latter affects the proper working of the player piano.
Another object of the invention is the provision of a pneumatic wherein the bleed tube is controlled by a regulating device so that the action of the valve will be varied to assure a quick or slow action thereof, thereby effecting a sharp clear single note or a trill.
A further object of the invention is the provision of a pneumatic in which a bleed tube is arranged to assure greater advantages to a player piano as it connects directly to the diaphragm chamber, the dia phragm of which controls the valve, thereby enabling a clearer passage to be established between the vent air tube leading from the tracker board so that the valve will be positively opened or closed with accuracy and the required rapidity for the proper working of the player piano when in action, the diaphragm being readily cleaned without requiring the removal of the pneumatic from the player piano.
A still further object of the invention is the provision of a pneumatic wherein the diaphragm is reinforced to prevent the sag ging or breaking down thereof resultant from continued use of the player piano.
A still further object of the invention is the provision of a pneumatic wherein the COIlStll'lCtlOll thereof employs minimum parts thereby affording a simple device which is thoroughly reliable and efficient in operation and inexpensive in manufacture. lVith these and other objects in view, the invention consists in the construction, combination and arrangement of parts as will be hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claims hereunto appended.
In the drawings: Figure l is a side elevation of a pneumatic constructed in accordance with the invention, showing the air vent tube leading from a tracker board, and the main suction tube leading to the main bellows. Fig. 2 is a vertical longitudinal sectional view through the pneumatic. Fig. is a transverse sectional view thereof. Fig. i is an end elevation, showing the main suction tube in vertical section. Fig. 5 is a sectional view on the line 55 of Fig. 4. Fig. 6 is top plan view of the pneumatic with the key operating bellows removed.
Similar reference characters indicate corresponding parts throughout the several views in the drawings.
Referring to the drawings by numerals, the pneumatic comprises a hollow body 5 having arranged therein a horizontal partition 6 and a vertical partition 7 forming independent compartments or chambers 8, 9 and 10 respectively, the compartments 9 and 10 being in communication with each other through a port 11 formed in the horizontal partition 6, while the compartment 8 is out of communication with said compartments and therefore can be termed a dead air cell or space, it being understood of course that the pneumatics may be arranged in series, and this is accomplished by constructing the body 5 of the required length and dividing the same transversely thereof at intervals. The body 5 of the pneumatic is preferably constructed from wood, although the same may be made from any other material, and in the inner face of the bottom of the body is formed a diaphragm cell or chamber 12 over which is bridged the resilient or flexible diaphragm l3, and' into the diaphragm chamber 12 leadsa tracker tube 14 to which is connected at its outer end a flexible air inlet tube, the same being extended to one of the inlets in the tracker board 16 as usual for a purpose presently described. Mounted in one end wall of the body 5 and opening into the chamber 10 is a nipple 17 to which is connected a flexible suction tube 18, the same being connected with the main bellows of the player piano in the ordinary well-known manner to eli ect a raising and lowering of the diaphragm 13 for a purpose presently described. Fixed to the top of the body 5 of the pneumatic is a hanger or bracket 15) to which is connected the base or stationary cheek 20 of a bellows 21, the movable check 22 of which is formed with an extension 23 to which is connected the striker rod 24L which is adapted to operate its respective key of the key-board of the piano for the automatic playing thereof as usual. Opening into the compartment 9 through the top of the body 5 of the pneumatic is a tube 25 which also communicates with the bellows 21 so that on suction being created in the said compartment 9 the bellows 21 will be caused to close, thereby actuating the striker rod 24; connected thereto, the suction in the compartment 9 being controlled through the medium of a valve presently de scribed. Arranged within the compartment 10 at ri ht angles to each other and spanning the diaphragm 13 are flexible protective strips 26 which are suitably fastened to the said diaphragm at their crossing point and also fastened to the inner face of the bottom of the body 5 of the pneumatic, these strips being designed to prevent the sagging or breaking down of the diaphragm during continued use of the pneumatic. Arranged to span the port 11 in the horizontal partition 6 is a bridge bar 27 which is formed with a central guide sleeve 28 for the valve, which comprises a stem 29 slidably mounted in the guide sleeve 28, the lower end of the stem 29 being formed with an abutment block 30 which acts upon and is adapted to contact with a disk 31 fixed centrally to the diaphragm 13, while formed at the opposite end of the stem 29 is a double-faced valve 32, one face of which is adapted to engage a seat 33 formed in the upper side of the horizontal partition 6 for closing the port 11 when the said valve is operated in one direction, while the other face of the valve 32 is adapted to engage the inner end of an air inlet tube 34 which is adjustably threaded in the top of the body 5 and opens exteriorly thereof, the said valve 32 being designed to close the tube 34: on its reverse movement. Leading from and communicating with the diaphragm chamber 12 is an air bleed tube 35 which extends upwardly and into the compartment 10 for communication therewith. Adjustably threaded in one end of the body 5 in alinement with the bleed tube 35 is a regulating screw 36 which engages in the end adjacent thereto of the bleed tube 35 for opening or closing the same on the adjust ment of the said screw.
It will be apparent that the air inlet tube can be adjusted to regulate the movenient of the valve in the pneumatic, thereby accu rately controlling the said pneumatic during the working thereof, the bleed tube being controlled through the adjusting screw :36 to accurately control the rise and fall of the diaphragm 13 and also to permit the convenient cleaning of the diaphragm chamber 12 as dirt and dust can be blown therefrom through said tube 35 into the compartment 10 on the opening of the free end of the tube by the screw 36, the said tube and the latter being further designed to increase or de crease the rapidity of action of the bellows without requiring the removal of the pneumatic from the player piano. \Vhen the diaphragm rises and falls it controls the valve for the proper working of the pneumatic and thereby assure the correct playing of the said piano when in action.
The music sheet adapted to travel over the tracker board 16 is wound and unwound to and from spools (not shown) in the ordinary well-l-niown manner, and this sheet travels over the said tracker board and acts as a valve for the pncumatic-t 0., so long as an in'lperforate portion of the note sheet covers the inlet tracker board leading to thetube 11 which connected with the pneumatic the latter remains inactive, but the moment; a perforation in the note sheet passes over the said inlet in the tracker board the pneumatic becomes active, because the air is sucked through said tube l-fl on the working of the main bellows and a suction. therefrom is created within the compartment 10 which muses the raising of the diaphragin 12, and this latter in turn lifts the valve 32 from its seat 33 in the partition 6, thereby establishing communication between the compartments 9 and 10, and by reason of the communication between the bellows and the said compartment 9 the bellows will be caused to close. thus actuating the striker rod connected. with its respective key for the sounding of a single note. Should the bleed tube 35 not be present within the compartment 10 it would be impossible for the raising of the diaphragm 13 and the resultant accurate activity of the valve within the pneumatic. The instant the music sheet closes the inlet in the tracker board from which leads the tube 1 1 the valve will'become lowered and the bellows will expand, taking in air through the tube 3 1, and this operation is repeated during the working of the player piano. The bleed tube 35 when open will clean the diaphragm chamber 12, thereby sustaining it clean and free from accumulated dust or foreign matter so that the accurate operation of the valve is assured and the positive working of the diaphragm is maintained.
From the foregoing it is thought that the construction and manner of operation of the device will be clearly understood, and therefore a more extended explanation has been omitted.
What is claimed is 1. A pneumatic comprising a body having a partition therein forming superposed compartments, said body being further provided with a diaphragm chamber in its bottom, a flexible diaphragm closing the diaphragm chamber from communication with a compartment adjacent thereto, an inlet tube adjustably mounted in the top of the body and establishing communication between the uppermost compartment therein and the atmosphere, the said partition being formed with an opening in alinement with the inlet tube, a double valve for alternately closing the inlet tube and the said opening and having its stem working through the opening in the partition, flexible reinforcing strips crossing each other and superimposed upon the diaphragm and fixed to the bottom of the body, a disk mounted at the crossing point of the said strips, an abutment block formed on the stem and engageable with the disk upon the raising and lowering of the diaphragm to actuate the double valve, and means for guiding the stem through the opening in the partition.
2. A pneumatic comprising a body having a partition therein forming superposed compartments, said body being further provided with a diaphragm chamber in its bottom, a flexible diaphragm closing the diaphragm chamber from communication with a compartment adjacent thereto, an inlet tube adjustably mounted in the top of the body and establishing communication between the uppermost compartment therein and the atmosphere, the said partition being formed with an opening in alinement with the inlet tube, a double valve for alternately closing the inlet tube and the said opening and having its stem working through the opening in the partition, flexible reinforcing strips crossing each other and superimposed upon the diaphragm and fixed to the bottom of the body, a disk mounted at the crossing point of the said strips, an abutment block formed on the stem and engageable with the disk upon the raising and lowering of the diaphragm to actuate the double valve, means for guiding the stem through the opening in the partition, a tube leading from the diaphragm chamber into the lowermost compartment in the body, and an adjusting screw threaded in one end of the body and forming a valve for the free end of the tube.
In testimony whereof I afiix my signature in presence of two witnesses.
JUDSON ROGERS DE NOYELLES. Witnesses:
MAsoN LOWELL, CLARENCE MACDOWALL.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,
- Washington, D. C.
US76813013A 1913-05-16 1913-05-16 Pneumatic valve. Expired - Lifetime US1093546A (en)

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