US894007A - Automatic self-adjusting pneumatic-music-player action-valve. - Google Patents

Description

No. 894,007. PATENTED JULY 21, 1908. v. E. B. HOUGH. AUTOMATIU SELF ADJUSTING-PNEUMATIC MUSIC PLAYER ACTION VALVE.

APPLIOATION FILED NOV. 5, 1907.

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' f N -T STATES; i g-Enr o EARL B. nouen, orsTocKTo CALIFORNIA, ASSIGNOR 'ro IRVINE AND.

PANY, or STOCKTON, CALIFORNIA, AGORPORATION.

men;

House 00M- Specification of Letters Patent.

"Patented Juiyzi, 1908.

Application filed Novembr 5, 1907. Serial No. 400 785.;

To all whom it may concern: House, a

State of California, have invented certain .new and useful Improvements in Automatic Self-Adj usting PneumatiC-Music-Player Action-Valve's; and Lido declare: the following to be a full, clear, and exact description of the same, such as will enable others skilled in' the art towhich itappertains tofilak and use thesarne, referencebeing-hadfto the; I accomp anying drawings ,and to the characters of reference marked thereon, which form a part of this application.

This invention relates to "music* players and-[particularly to that typeknown as I pneumatic, any object being. to provi'de'a' valve-mechanism which will'automatically easilyinstalledj and repairedif necessary; These-tobjectsll accomplish by'lmeans of a operate accordance withjt'he pneumatic action .of the deviceonwhich it is installed and unseat and. resea-t-aitself 'automatically; and in'a thorough a'i'id efiective;manner,

Also .one which will besimple and inexpen slve of constructlon, and'onegwhich can be valve suitably seated and-having a stem so disposed as to permit saidqvalve to oscillate freely in respect the'retoj also by a c0rrelative construction and jarran ementi of parts whereby the said valve wil operate in ac cordance with the-pneumatic action thereof; also by such other and further construction aswill appear by a perusal'of .the"following specification and claims.

In the drawings similarlcharactersof reference indicate, corresponding. partsin the several views.

Figure 1 is a side-elevation of a piano key showing my improved pneumatic valve .mechanism connected therewith. #Fig. 2 is an enlarged sectional view of the pneumatic action mechanism; Fig. 3 is a sectional ing the same with thelpush rod 3'.

view taken relatively one line a! a: of Fig. 2'.'

Fig, 4 is a sectional view of a valvei Fig. .5 is a fragmentary detached-view of valve stem and pivot.

Referring now more particularly to the characters of reference on the drawings 1 designates a keyof the instrument having an adjustment screw mechanism 2' connect;-

418 3 dowel slidabl disposed'heneath th rear of the key 1 and having a pin 5 extendof a-ibellows 7 secured to a structure 8.

1 9- is an air passage leading fromthe belber 10 a port 11 leads tothe atmosphere and passages 12-5I'ead into avacuum chamber 13.

posed a fleiiible diaphragm-16. Also disposedprovided. With. a central socket 21 through" ll 'which is extended a'pin' 22. :Hung 'on said i pin 22 is a valve stem'in such manner as to permit the said valve tooscillate freely with J through a slot 12*, which acts asa' guide- :disk 24 normally seated on the diaphragm. 16. .25'is" an opening leading from the chamber instrument, while-.26 is'a' pipe 'leading from 27,;over whicli'runs the usual record sheet 28. g 29 is "a sheet of. strong paper or similar posed ends of the chambers '13 and 15 for a purpose as -will appear.

In practice the above'described' mechan-- lism is. of course connected with each andv 4 normally out of engagement with the key 1.

. Then when a perforation. in the )aper 28 passes over the slot in the tracker .oard the vacuum in the chamber 13 suddenly draws avquantity of air mto the ohamher-15,

upward, unseatingthe valve .18 from the of the leather 19 on said v passages 12 and closing the port 1-1 by means a ve 18, thus per- I 14 is an openingfrom the'chamber 13 into a-chai'nbe plii over which opening 14 is disrom the chamber 13 to the chamber 15 is 'a' respect to said stem; said stem extendingtherefor, into the chamber 13 and having a said chamber 15to' the usual tracker board thereby forcing. the diaphragm 16 and disk: 24

.ing through-an arm 6 secured to the bottom lows 7 'into' a chamber. 10-from which cham i 13 to the main suction mechanism of the ;material -which forms the cover'for the exevery key. When this mechanism isin its ion and thus engaging the key 1, causing it to suitably op erate the hammer mechanismand produce music.

25 exhausts the air from the cham er 15 through bleed hole 17 as has been described,

the diaphragm 16 resuming its normal position, thus permittingntlie valve 18 to rese'at itself over the assages 12. In this connection the main eature of=my invention is the fact that the valve 18 is capable of freely oscillating with respect to its stem 23- which permits it to adjust itself automatically and perfectly over the-passages 12, thus preventing any possibility of air getting into the chamber 13 until it is desired. Owing to valve stem-23 being attached to-valve18, which valve 18 is given a free oscillation on valve stem 23, asdescribed, thesaid valve 18 is pulled'back and seated over openings 12 by the downward suction of diaphragm 16, thus giving the valve 18 a rapid and positive motion without de ending on springs or gravity and by the oscillation-of valve 18 it will seat itself at any angle at which seats containing openings 12 and 11 might be with relation Then when the said perform. tion passes off the tracker board, closing the slot therein, the suction through the o eningto each other. When" the valve18 has reseated itself as described the bellows again fill with air through the port 11 and passage 9-, thus carrying the dowel 4 out of engagement with the key 1, as described.

Thus it will be seen that I have objects of the invention as set forth herein.

While this specification-sets forth in de-.

roduced such a device as substantially fulfi s all the tail the present and preferred features of the constructionof mydevice, still small deviations therefrornmay be resorted to,' none ofv which'willg however, form a departure from the spirit of the invention. Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is c 'In a deviceof .the character described, a structure having a plurality ofchambers, there being air passages connecting the same, a valve seat over oneofsaid passages and comprising a head having a socket formed therein, apin disposed through said socket,

a stem' pivoted on said pin, said head being capable of freely oscillating with respect to said stem, as set forth.

In testimony whereof I affix my signature inpre'sence of, two witnesses. I

' EARLB. HOUGH. Witnesses:

PERCY S WE'BsTER, JOSHUA B. WEBSTER.

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