US1225619A - Pressure-regulator. - Google Patents

Description

I. C. HAGEY.

PRESSURE REGuLAToR. APPLICATION FILED MAY Il, 903. 1,225,619. Patented May 8, 1917.

2 SHEETS-SHEET I.

J. C. HAGEY.

PRESSURE REGULATOR.

APPUCATIN FLED MAY H 908- 1,225561 9. Patented May 8,1917.

2 SHEETS-SHEET 2.

@www

UNITED sTATEs PATENT oEEIoE.

JAMES CLARKE HAC-EY, OE CHICAGO, ILLINOIS, AssIeNOE or ONE-HALE To TIIE CABLE COMPANY, OE CHICAGO, ILLINOIS, A CORPORATION OE ILLINOIS.

PRESSURE-REGULATOR.

.To all wiz/0m t f//my/ concern Be 1t known that I, JAMES CLARKE HAGEN,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful I'mprovements in Press'ure-Regulators, of which the following isa specification.

My invention relates to automatic regulation of fluid pressure and one obj ect thereof is to provide' a simple' and etlicient regulating device.

Another object o-f my invention is to provide means through which the degree of automatic regulation may be instantly Varied either automatically or at will.

The invention is particularly applicable to pneumatically operated devices for playing musical instruments and includes in a modified form one of the devices shown and described in my application, Serial No. 280,304, filed Sept. 9.7, 1905.

Figure l is a partly sectional front View showing my improved construction of the pressure-controlling system of an automatic musical instrument;

Fig. 2 is a similar view showing a modilication of my regulating device in connection with a pressure-controlling system arranged upon customary principles;

Fig. 3 is an enlarged view in vertical section of the regulating device shown in Fig. l; and

Fig. 4 is an enlarged view in vertical section of the regulating device shown in Fig. 2.

I have shown and will describe the invention. in connection with an automatic playing device for musical instruments operated by wind pressure less than atmospheric pressure, that is, suction7 or as I prefer to term it, wind-tension, but I do not wish to be limited to the use of the invention in connection with this particular class of devices', as it will be readily understood that slight constructive modifications will ada-pt it for use in such automatic playing devices' when operated by wind-pressure greater than' atmospheric pressure and that the exact principles and purposes may be retained when used in connection with other fluids than air and upon other mechanisms than those connected with musical instruments.

Pneumatically-operated' music-playing devices are usually controlled by a moving note-selective means, such as a perforated l sheet, and comprise at least two pneumatic Sp'ecification of Letters Patent;

Patented May 8, 1917.

Appcl'tion lediMa'y 1.1, 1908. Serial 110.432,200.

divisions wherein the wind-tension is under separate regulation and control, as, for Instance, the note-sounding division and the controller-propelling division.

I provide a regulating device which may be advantageously used in connection with either one of these divisions, furnishing unusually sensitive response to the spasmodic demands of the pneumatics of the notesounding division when connected therewith and unusually even regulation of the windtension when connected with the controllerpropelling division.

A regulating bellows, or chamber, is usually employed for maintaining the lightest desired wind-tension in the wind-ways leading to the pneumatics of the note-sounding` division for pianissimo effects and if this wind-tension is to be varied to produce fortissimo effects such variation is accomplished by operating a manually-controlled constricting valve situated somewhere in the said wind-ways to permit direct communication with a high-tension reservoir or the pumpingmechanism. I have found that the most desirable regulator maintaining this light tension is one possessing the minimum reservoir capacity consistent'. with an elficicnt regulation of ample valve-port area. A sulliciently large valve-port should be opened or closed simultaneously with the varying demand from the pneumatics andv such simultaneous action is not found in constructions wherein the regulating chamber is of dimensions large enough to constitute a substantial reservoir. Diiiiculty has been experienced in combining a small enough regulating chamber with a large enough valveport, as variation in the degree of windtension supplied by the pumping mechanism acts upon the face of the regulator-valve exposed thereto and modifies the action of the regulator.

In Figs. 2 and 4L, I have illustrated that part of my invention claimed by me to eliminate this difliculty and this part of the device is complete in itself in so far as concerns absolute regulation of wind-tension at an established degree.

Wind-tension is produced in the chamber A by means of ay suitable pumping mechanism (not shown) and under normal conditions may extend without limitation to the pneumatics (not shown) of the note-sounding division through open ports B and C link M and through such adjustment regu- Y lates the degree of tension in the regulating chamber at a point determined by the spring` H. Connection of chamber E is made With the note-sounding pneumatics through port I and passages J and D. Adjustment of the constricting valve K varies the opening ot port B and therefore the operation ot' the note-sounding pneumatics by the full power of Wind-tension in chamber A, and complete closure of this port prevents the said operation except by the reduced degree of tension in the regulating chamber Il.

I have indicated by the letter N, at the right hand end of Figs. l and 2, a duplication of the regulating device, shown in each iigure at the opposite end thereof, compris-- ing the chamber E and other component parts. N represents the chamber E arranged for control of the wind-tension Jor the controller-propelling division. Under certain conditions, the Wind-tension in chamber A may extend Without limitation to the propelling device (not shown) through the open port O and passage P (see Fig. l), but normally this port is closed and t-he operation of the propelling device is limited to the reduced degree of tension in the regulating chamber N. rlhe windvvays extending from chamber A through chamber N to port (Fig. l) are arranged reversely to those shown in connection with chamber E, at the opposite end of Fig. 2, and the ports B and V are relatively similar to the ports O and Q, so that regulated tension may extend from the chamber N to the propelling device through port Q and passage P. Adjustment of the valve R varies the opening of port Q, and therefore the operation of the propellingv device,

Under certain conditions, it is desirable to render the note-sounding division inoperative and I have shown means for this purpose comprising valves S and 'l Which may be drawn across the ports V and C respectively. It is the usual custom to connect these valves for simultaneous movement with the valve W (see Fig. l) so that the ports V and C may be closed and the port O opened by a single movement and the arrangement reversed by reversal of the movement.

I have described the parts usually employed in devices of this class and their purposes and I shall now explain the construction and operationv of my improvements.

l (Figs. 3 and fl) is a pneumatic having a hinged movable member 2 and provided therein With an inlet 3. The pneumatic is secured to a rigid supporting arm a in such position that the member 2 may act as a valve over the port G. The member 2 is provided upon its face with suitable packing to insure tight closure over the port and its operation may be accomplished in any desirable manner. I employ the usual valvestem or link M for this purpose.

During operation, windtension in the chamber A may exhaust the regulating chamber E through the valve-controlled port G and move the member L under tension of the spring H. Such movement of the member L operates the member 2 of the pneumatic l by means of link M to vary the opening of port G. The spasmodic and variable admission of air through port I from the "Lote-striking pneumatics causes a compensating adjustment of the member 2. When this member is held closed over the port G, the same degree of wind-tension acts upon the opposite sides of the said member through inlet 3. The port area covered by member 2 and the area of the said member exposed in the pneumatic l are directly proportionate and I find that, when the proportions o' these areas are correctly established, delicate and positive regulation ot wind-tension may be effected by a relatively small regulating chamber. The `pneumatic 1 in this manner constitutes a practically constructed balanced valve.

The further development of my invention has te do With the elimination of a dil'liculty that has been experienced in the control of Wind-tension in instruments employingl the described constricting valve. The area ot the port controlled by this valve bears a definite relation to the total cubic volume ot the pneumatics to be simultaneously operated. There one pneumatic is to be operated, the constricting valve must be set at a certain position, and, Where a number are to be operated simultaneously, the valve must be moved to a new position in order to permit operation of the greater number with the same power. A constant readjustment ot this valve is therefore necessary in o fder to produce, even approximately, the desired etiiect, and, since the demand from the pneumatics is constantly varying, it is almost impossible to properly manipulate this con-- stricting valve. I purpose its elimination, therefore, and depend upon the automatic ,regulation ot the valve controlled by the regulating chamber to compensate tor lhe variation in the demand from the pneumatics.

In such an instance, I employ a quicklygathering spring (Il, Figs. l and to provide tension in the regulating chamber F., that is, a spring Which quickly increases .in power as it is moved from inactive position. I extend the link or stem M tar enough beyond the member Il of the chamber E to atford attachment therewith oli a device mounted upon and movable with the said member. This device may be of a .f'ariety of constructions and may either be operated manually or pneumatically. it consists, however, of a mechanism for adjusting the distance between the two members and li. 1f the link lil is pulled ontwardly from the chamber E by the said mechanism then the member 2 must move nearer the member L and consequently the said member L must expand the spring .l-l to an increased degree in order to close the member 2 over the port G. rtherefore, if the link M is varied in its position with relation to the member L the tension of the spring H must also be varied and consequently the wind-tension in the chamber E.

To obtain a gradual variation in the wind-tension, it may be advisable to manually adjust the controlling mechanism thus described and l have shown a means for such manual adjustment. in Fig. 1, comprising link 5, crank 6, link 7, and controlling lever S. ln instances demanding quickly accentuated effects, l prefer to employ a pneumatic as at 9 which is provided with tubes or nipples 17, expanded by the spring 11, and operatively connected with the link M by an arm extending beyond its hinged end. Under this arrangement` collapse of the pneumatic draws the link outimrdlv from chamber E. j

Pneumatic collapse or inflation of the pneumatic 9 may be accomplished by means of a valve controlled in turn either by the controlling-sheet or by a conveniently located finger-piston. 1 have considered it unnecessary to further complicate the drawings for the purpose of showing this valve or the method of its control, as any particular form of valve for this purpose is not a part of this invention.

l have shown an adjustable nut upon the link 5 which will act against the lug or screw-eye 10 when moved to adjust the movable member of the pneumatic 9 in a collapsing direction but will not interfere with the pneumatic collapse thereof at any point in this manually adjusted movement.

lt will thus be seen that l, provide construction by which, when connected with the note-sounding division, the degree of tension for ojierating the pneumatics may be varied either at will, without periencing the hereinbefore described diliieulty in manipulation of a constrieting valve, or by the controlling-sheet.

1n the type of automatic music-playing instruments employing a perforated controlling-sheet, the said sheet is drawn across a tracker'having apertures therein for registration with the perforations in the sheet. The majority of these instruments are operated by varying degrees of wind-tension and this tension is transmitted to the apertures of the tracker by 4means well known to those conversant with the art. rlhe sheetpropelling device should operate to give uniform movement at adjustable predetermined degrees of speed. well recognized difficulty .in obtaining` this uniform movement due to the fact that increase in the degree of wiiul-tension for variation in musical expression also increases the tension in the tracker-apertures.and adds to the friction of the sheet against the tracker. This amounts to a continual variation .in the load upon the she-e -propelling device. lt has been considered advisable to regulate the wind-tension for operation of the propelling device at an unvarying degree and to permit adjustment through a valve-controlled port located between the regulating device and the said propelling device. As thel operating tension is unvarying and the load is variable, it is obvious that variation must occur in the speed of the propelling device.

My improved regulating device, when used in connection with the controller propelling division, provides compensation for the described variation in load.

1t will be seen, upon reference to Fig. 3, that the working length of each of the springs H and 11 may be adjusted by transfixing the springs with the pins 14 and 16 at any desired point and the movable members of the chamber E and pneumatic 9 may be adjusted in connection with the respective springs by means of the screw-nuts 12 and 13.

The device is rst placed in position as shown at N in Fig. 1 but the tubes are not connected therewith. The degree of wind-tension in chamber N is then determined for correct operation of the propelling device by adjustment of the nut 12 (Fig. Such adjustment should be made with a fairly uniform tension in the chamber A, as, otherwise, the consequent variation in the load, hereinbefore described but not yet cared for, would modify the action of the propelling device.

The tubes 15 are then slipped over the nipples 17. rlhese tubeslead from the interior of pneumatic 9 to any convenient point of attachment with such windways as may be luider the same degrees of variable tension as the tracker-apertures. The tension in the windways, to which the tubes 15 are connected. is then reduced to the lightest degree desired for note-sounding purposes and the nut 13 is adjusted to apply only sufiicient tension from the spring. 11

to prevent a partial collapse of pneumatic 9 by this lightest desired degree of tension. Upon increase of tension in the windways mentioned to the maximum degree desired, a second adjustment of the tension of spring 11 is made by means of pin 1G to correct the \\'orling length. of the spring. The spring should be strong enough to prevent complete collapse of pneumatic 9 excepting by the most extreme degree of high tension in the note-sounding d' vision. Such regulation by means of the pin is intended to vary the inherent gathering power of the spring and naturally affects the former adjustment by means of the nut 13. The said nut must then be readjusted to restore only sufficient tension of the spring upon the movable member of the pneumatic to prevent partial collapse thereof by the before- .mentioned lightest desired degree of tension in the note-sounding division.

By this method of double-adjustment of the spring l1, the pneumatic will remain expanded under the said lightest desired degree of wind-tension and the degrees of its collapse will be proportionate with the increase of tension in the note-sounding division and the tracker-apertures.

Following the adjustment of spring 1l, a corresponding adjustment may be made of the spring II to complete the compensating feature of .'my invention. The working length of this spring may be corrected by means of the pin 14. 'Ihe spring s hould be strong enough to cause a sufficient degree of wind-tension in chamber N for the proper operation of the propelling mechanism during the presence of the maximum degree of tension in the tracker-apertures of the notesounding division. The nut l2 will have to be ire-adjusted to restore the correct` tension to the spring II Aafter disturbance thereof by the adjustment of pin lil. rIhis may be easily done upon disconnection of the tubes l5. .The varying degrees of wind-tensionfor musical expression in the note-sounding division acts, as hereinbefore stated, in the tracker-apertures and must extend thereto through passage D. I have therefore shown connection of the tubes 15, in Fig. l, with a chamber in direct communication with this passage D.

The operation of my device, shown in Figs. l, and 3, for regulation of wind-tension in connection with the controller-propelling` division, is as follows: TNin 1ltension may be produced in chamber A at varying degrees according to the operation of the pumping mechanism, but my novel construction of the regulating valve controlling port G serves to maintain in chamber N a degree of tension unaffected by this variation. N (Fig. l) is a duplication of chamber Il Variation in the tension in the passage D and consequently in the tracker-apertures, however, directly affects the tension in chamber N by means of tubes 15 and pneumatic 9. So long as the tension in passage D is the lightest desired, the spring 1l prevents even a partial collapse of pneumatic 9, but, upon an increase thereof, the

said pneumatic proportionatclj' collapsed and the movable member Q is dra .rn nearer the member Ia of chamber N. The member Ii is instantly compelled to increase the cxpansion of spring II in order to maintain regulation of tension under this shifted relative position of the member Increase in the degree of tension in the passage D therefore causes proportionate increase in the degree of tension in chamber N, which. is the effect desired.

It will thus be seen that, when increased. tension in the tracker-apertures causes an increase in the load for the propelling device, a simultaneous and compensating increase is effected in the power applied to operate the said device.

The principles of the invention herein described may be applied equally well in pressure regulators for gas, wherein an automatic increase in the degree of regulated pressure is desired to compensate for an increase in consumption, and the same principles may be employed in automatic water-v heating devices, whcrcin the water-pressare at a given point may determine the regulation of the heat-producing fluid. Many other devices may be improved by the employment of my invention and I desire, therefore, not to be limited to its use in connection with the particular mechanisms herein shown and claimed.

I claiml. The combination, with a pressure chamber, a pressure-regulating chamber, a communication between said chambers, a valve controlling said communication and means for automatically operating said valve upon pressure-variation in said regulating chamber, of a perforation in said valve and means (l) operable through said perforation to act with counterbalancing effect upon said valve.

2. In combination with a pressure chamber, a pressure regulator comprising a chamber (E), a communication between the pressure chamber and said chamber (E), a valve (2) positioned upon movement to close said communication7 means (L) operating to move said valve upon pressurevariation in said chamber (E), means (l) to act with counterbalancing effect upon said valve and a perforation in said valve through which the second named means communicates with the pressure chamber upon closure of said communication by said valve.

3. In a pressure regulator, the combination, with a pressure chamber, a passage for communication with said chamber and a valve acting upon variation in the degree of pressure in said chamber to control the communication of said passage, of a second chamber operatively connected to act with counterbalancing effect upon said valve durfil communication with said chamber and avalve acting upon variation in the degree of pressure in said chamber to control the communication of said passage, of a perforation in said valve andan auxiliary' chamber in communication with said perforation.

5. ln combination with a pressure chamber, a pressure regulator comprising a chamber (E), a communication (G) between the pressure chamber and said chamber (E), a valve (2) positioned upon movement to control said communication, said valve otl'ering one of its faces to the pressure in the pressure chamber, a second chamber (l) operatively connected with said valve and an opening (3) in said valve through which the pressure in the pressure chamber may act in said second chamber with counterbalancing effect upon said valve.

6. The combination of a regulating pneumatic having a vibratory leaf or member, a passage communicating with the interior of said pneumatic, and a. second pneumatic arranged within said regulating pneumatic, said second pneumatic having a swinging or vibratory leaf or member connected with the vibratory member of said regulating pneumatic, said swinging leaf of said inner pneumatic providing a valve for said passage and being movable by said vibratory member of the regulating pneumatic independently of the other leaf or member of said inner pneumatic.

7. The combination with a main pneumatic provided with a port or passage to be regulated, a small or supplemental pneumatic arranged within said main pneumatic and forming a valve for said port, and means whereby said supplemental pneumatic is opened and closed so as to control said port by the movement of the vibratory member of said main pneumatic.

8. The combination with main pneumatic provided with a port or passage to be regulated, a small or supplemental pneum atie arranged within said main pneumatic and forming a valve for said port, and mechanical connection with the vibratory member of the supplemental pneumatic for actuating said member independent of the other member by the movement of the vibratory member of the main pneumatic.

9. The combination with a main pneumatic having a port or passage to be regulated, a supplemental pneumatic confined within said main pneumatic and mounted rigidly therein, the swinging or vibratory leaf of said supplemental pneumatic providing a valve for said port, and a connection from said vibratory member of said supplemental pneumatic to the vibratory member of the main pneumatic, whereby the movement of the latter operates said movable member of the supplemental pneumaticto control said port.

10. rhe combination of a main pneumatic having a port to be regulated, a supplemental pneumatic arranged within said main pneumatic and rigidly mounted therein, said supplemental pneumatic having its swinging member mounted to control said port, and a rod connected with the swinging member of said supplemental pneumatic and also connected with the movable member of the main pneumatic, whereby the movement of the latter actuates the former to control said port.

11. The combination of a. mai-n pneumatic having a port to be regula-ted, a supplemental pneumatic arranged within said main pneumatic and rigidly mounted therein, said supplemental pneumatic having its swinging member mounted to control said port, a rod connected with the swinging member of said supplemental pneumatic and also connected with the movable member of the main pneumatic, whereby the movement of the latter actuates the former to control said port, and a third pneumatic mounted upon the vibratory member of the main pneumatic and connected with said rod which is connected with the swinging member of the supplemental pneumatic.

12. The combination of a main pneumatic having a. port to be regulated, a supplemental pneumatic arranged within said main pneumatic and rigidly mounted therein, said supplemental pneumatic having its swinging member mounted to control said port, a rod connected with the swinging member of said supplemental pneumatic and also connected with the movable member of the main pneumatic, whereby the movement of the latter actuates the former to control said port, a third pneumatic mounted upon the vibratory member of the main pneumatic and connected with said rod which is connected with the swinging member of the supplemental pneumatic, and tension springs controlling the swinging member of the main pneumatic and also controlling said third mentioned pneumatic.

13. rihe combination of a main pneumatic having a port to be regulated, a supplemental pneumatic arranged within said main pneumatic and rigidly mounted therein, said supplemental pneumatic having its siifinging member mounted to control said port, a rod connected with the swinging member of said supplemental pneumatic and also connected with the movable member of the main pneumatic, whereby the movement of the latter` actuates the former to control said port, a third pneumatic mounted upon the vibratory member of the main pneumatic and connected with said rod which -fie is connected with the swinging member of the supplemental pneumatic, tension springs controlling the swinging member of' the main pneumatic and also controlling said third mentioned pneumatic, and means whereby said springs may be adjusted in length to vary their tension.

14. The combination of a main pneumatic having a port to be regulated, a supplemental pneumatic arranged within said main pneumatic and rigidly mounted therein, said supplemental pneumatic having its swinging member mounted to control said port, a rod connected with the swinging member of said supplemental pneumatic and also connected with the movable member of the main pneumatic, whereby the movement of the latter actuates the former to control said port, a third pneumatic mounted upon the vibratory member of the main pneumatic and connected with said rod which is connected with the swinging member of' the supplemental pneumatic, tension springs controlling the swinging member of the main pneumatic and also controlling said third mentioned pneumatic, and means for controlling the pneumatic pressure within said third pneumatic independently of the pressure in the other pneumatics.

1,5. The combination of a main pneumatic having a port to be regulated, a supplemental pneumatic arranged within said main pneumatic and rigidly mounted therein, said supplemental pneumatic having its swinging member mounted to control said port, a rod connected with the swinging member of said supplemental pneumatic and also connected with the movable member of the main pneumatic, whereby the movement of the latter actuates the former to control said port, a third pneumatic mounted upon the vibratory member of the main pneumatic and connected with said rod which is connected with the swinging member of the supplemental pneumatic, tension springs controlling the swinging member of the main pneumatic and also controlling said third mentioned pneumatic, and means whereby the spring 'for said third pneumatic may be independently adjusted.

1G. r1`he combination of a main pneumatic having a port to be regulated, a supplemental pneumatic arranged within said main pneumatic and rigidly mounted therein, said supplemental pneumatic having its swinging member mounted to control said port, a rod connected with the swinging member of said supplemental pneumatic and also connected with the movable member of the main pneumatic, whereby the movement of the latter actuates the former to control said port, a third pneumatic mounted upon the 'vibratory member of the main pneumatic and connected with said rod which is connected with the swingingmember of the supplemental pneumatic, tension springs controlling the swinging member of the main pneumatic and also controlling said third mentioned pneumatic, and means whereby the springfor said third pneumatic may be independently adjusted, said means comprising a manually operable lever and connections between the same and said spring.

17. The combination with first and second fluid pressure systems, of a pressure regulator operated by and acting upon the pressure in the first of said systems, and means 4through which varying changes in pressure in the second of said systems may determine the pressure which said regulator automatically acts to maintain in the first of said systems.

18. The combination with first and second fluid pressure systems, of a member movable by the pressure in the first of said systems into various positions between thc extremes of its movement, the various positions of said member being indicative of various pressures in the first of said systems, a pressure regulator operated by and acting upon the pressure in the second of said systems, and means through which the position of said member may determine the pressure to be maintained by said regulator in the second of said systems.

19. The combination with first and second fluid pressure systems and a pressure regulator operated by and acting upon the pressure in the first of said systems, of means movable by pressure into varying positions through which varying changes in pressure in the second of said systems may adjust the automatic action of said regulator.

20. The combination with first and second fluid pressure systems and a pressure regulator operated by and acting upon the pressure in the first of said systems, of means for automatically applying varying changes in pressure which occur in the second of said systems to produce effects upon the action of said regulator and thereby determine the regulation of pressure to be provided by said lregulator in the first of said systems.

21. The combination with first and second fiuid pressure systems and a pressure regulator operated by and acting upon the pressure in the first of said systems, of a member movable by the pressure in the second of said systems into various positions between the extremes of its movement and acting to variably position an adjustable part of said regulator, the various positions of said member being indicative of various pressures in the second of said systems.

29,. The combination with a plurality of fluid pressure systems and a pressure regulator operated by and acting upon the pressure in one of said systems, of a pressure chamberconnected with another of said systems and having a movable member, and means through which varying movements of the movable member of said chamber may cause varying changes in the regulation of pressure by said regulatorl in said one of said systems.

23. The combination with first and second fluid pressure sysems and a pressure regulator operated by and acting upon the pressure in the first of said sy tems, of a pressure chamber connected ivicii the second of said systems and having a member movable by the pressure in said chamber into various positions between the evtremes of its movement, the various positions of said member being indicative ot various jnfessures in the second of said systems, and means through which varying movements of the member of said chamber may cause varying changes in the regulated pressure provided by said regulator in the first oi said systems.

2li. The combination with first and se ond fluid pressure systems and a pressure regulator operated by and acting upon the pressure in the first of said systems, of a movable member and means 'through which varying movements of said member may cause varying changes in the regulated pressure provided by said regulator in the first of said systems, variable movements of said member being caused by and corrosponding With changes in pressure in the second of said systems.

9.5. rThe combination With a plurality of fiuid pressure systems and a pres .ire regulator operated by and acting upon the pressure in one of said systems, et a pressure chamber connected with another of said systems and having a movable member, and means through which varying movements of said member may cause varying changes in the regulation of pressure by said regulator in said one of said tems, variable movements of said member being caused by and correspomling with changes in pressure in said chamber. 2G. The combination with first and second fluid pressure systems and a pressure regulator operated by and acting upon the pressure in the first of said systems, et a. pressure chamber connected with the second of said systems and having a member movable by the pressure in said chamber into various positions between the extremes ot its movement, the various positions of said member being indicative of various pressures in said chamber, and means through which the position of said member may determine the regulation of pressiue to be provided by said regulator in the first of said systems.

27. The combination with first and sccond fluid pressure systems and a pressure regulator operated by and acting upon the pressure in the first of said systems, oi a` pressure chamber connected vvith the sie ond of said systems and having a member movable by the pressure in said chamber into various positions between the extremes of its movement, the various positions ot said member being ind'cative of various pressures in said chamber, .and means through which the position of said member may determine the effective povver of said regulator in regulating the pressure 'a the first of said systems.

Q8. rEhe combination with first and second vfluid pressure systems and a pressure regulator regulating the pressure in tbe first of said systems, ot a pressure chamber connected with the second of said systems and having a movable member, variable movements of said member being caused by and corresponding with changes in pressure in said chamber, and means through vvhich varying movements of said member may cause varying adjustments in the au tomatic action of said regulator.

29. rEhe combination with first and seo ond fluid pressure systems and a pressure regulator regulating the pressure in the first of said systems, of a pressure chamber connected with the second ot said systems and having a movable member acting to move an adjustable part ot said regulator. variable .movements of said member being caused by and corresponding with changes in pressure in said chamber.

30. rlhe combination ivith first and second fluid pressure systems and a pressure regulator regulating the pressure in the first ofsaid systems, of a pressure chamber connected with the second of said systems and having a member movable by the pressure in said chamber into various positions between the extremes ot its movement, the various positions ot said member being indicative of 'arious pressures in said chainber, and means through which tbc position et said member may determine an adjustment of said regulator.

The combination ivith first and sccond fluid pressure systems and a pressure regulator regulating the pressure in the first ot said systems, of a pressure chamber connected with the second ot said systems and having a member movable by the prcssure in said chamber into various positions between the extremes of its movement and acting to position an adjustable part of said regulator, the various positions of said member being indicative of various pressures in said chamber.

82. rThe combination with a motor for advancing a, music sheet across a tracker, of means for automatically varying the motor operating pressure in accordance with and controlled by variations inthe retarding influence of said tracker upon said sheet.

33. The combination with a motor for advancing the music sheet of an automatic musical instrument, of means for automatically controlling the motor operating pressure by variations in the action operating pressure.

311i. The combination with a pressure regulator having a movable member .uid regulating valve, of a pressure chamber positioned upon the outer side oit' and movable with said member, and acting upon said valve.

The combination with a pressure regulator having a pressure chamber, a movable member, and a regulating valve, of a second pressure chamber subject to pressure independent of the pressure within the lirst said chamber and having a member movable by the pressure within said second chambe' into various positions between the extremes of its movement, the second said member cooperating with the first said member in tl e operation of said valve, and means for producing various degrees of pressure within said second chamber to cause the positioning of the second said member in said various positions, each position thereof being in accordance with the degree of pressure within said second chamber.

36. The combination with a pressure regulator having a movable member and a regulating valve, of a pressure chamber movable with said member and having a movable member movable by the pressure within said chamber into various positions between the extremes of its movement and acting to move said valve,and means for producing various degrees of pressure within said chamber to cause the movement of the second said member' into said various positions, such movement being propor- `ionate to the changes in the degree of pressure within said chamber.

37. The combination with a pressure regulator having a movable member and a regulating valve, of a second movable member carried by said movable member, a pressure chamber acting to move said valve b v means of said second movable member, said second member being movable by the pressure within said chamber into various positions between the extremes of its movement, and means for producing various pressures within said chamber to cause the positioningr of said second movable member in said various positions, said various positions being in accordance with said various pressures.

38. The combination with a pressure regulator having' a movable member and a regulating valve, of a pressure cham-- ber movable with said member and hav ing a second movable member movable by the pressure within said chamber into various positions between the extremes oiE its movement and acting throilgh decrease of pressure within said chamber to move said valve in one direction, a spring acting to oppose the movement ot said second movable member in said one direction, and means for decreasing the pressure within said chamber in various degrees to cause the positioning of said second movalgile member in said various positions, each position thereof being in accordance with the de? gree to which the pressure within said chamber has been decreased.

39. The combination of a pressure regulator having a movable member and a reg ulatiug valve, and a pressure chamber having a movable member movable by the pressure within said chamber into various positions between the extremes of its movement and acting through decrease of pressure within said chamber to move said valve, a spring alone determining the operative pressure within said pressure chamber, and means for cecreasing the pressure within said chamber in various degrees to act in opposition to the action of said springjn positioning the movable member of said chamber in said various positions.

10. The combination with a pressure regulator having a pressure controlled movable member and a pressure controlling valve operated thereby, oit a pressure chamber positioned without said regulator, upon the movable member thereof and operatively connected with the valve operated thereby.

Signed at Chicago, Illinois, this eighth day of May, 1908, in the presence of two subscribing witnesses.

JAMES CLARKE HAGEY.

l/Vitnesses H. P. COFFIN, H. WV. Jarrow.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Images