US1971011A - Synchronizing device for self-playing instruments - Google Patents

Description

Aug. 21, 1934.

SYNCHRONIZING DEVICE FOR SELF PLAYING INSTRUMENTS Original Filed Dec. 25, 1932 4 Sheets-Sheet 1 Z R0 M Or R T 0 WWMH M A mm o L WITN SS Aug. 21, 1934. I L. LUBEROFF Y 1,971,011

SYNCHRONIZING DEVICE FOR SELF PLAYING INSTRUMENTS Original Filed Dec. 23, 1932 4 Sheets-Sheet 2 INVENTOR WITNESS Louis Luberoff;

: ATTORNEY g- 9 LUBEROFF 1,971,011

SYNCHRONIZING DEVICE FOR SELF PLAYING INSTRUMENTS Original Filed Dec. 23, 1932 4 Sheets-Sheet 5.

INVENTOR LOuz-s W ATTORNEY Aug. 2-1, 1934. LUBEROFF 1,971,011

SYNCHRONIZING DEVICE FOR SELF PLAYING INSTRUMENTS Original Filed Dec. 23. 1952 4 Sheets-Sheet 4 INVENTOR YWITNESS Long;

ATTOR N EY Patented Aug. 21, 1934 UNITED STATES SYNGHRONIZING DEVICE FOR SELF-PLAY- ING INSTRUIWENTS 1 Louis Lubero f f, Philadelphia, Pal

' Application member 23, 1932, SerialNo. 648,710

Renewed May, 31, 1934 9 Claims; (01. 84-4 This invention relates to a device for controlling the alternate operation of a plurality of self-playing musical instruments. i

An object of the invention is the provision of an arrangement for alternate operation of-an organ and a phonograph, whereby the phonograph may be employed to give a definite selection where it is impossible to reproduce the same selection on-the organ because jof the limited space in which the instrument is adaptedto be placed. In other words, the arrangement is such that any type of sound selection with various instruments or the voice especially may be reproduced alternately with the automatic operation of the organ. A further object of the invention is the provision of an arrangement for alternate opera-- tion of a phonograph and organ in which the player roll of the organ console will include means for controlling the proper timing of the stopping of the roll while causing initiation of the playing of a phonograph record which may or may not have its sounds amplified by a mechanism embodied in the organ, the phonograph also including means for'controlling the proper timing of the starting of the roll at the end of a phonograph record and vice versa. This invention will be best understood from a consideration of the following detaileddescription, in view of the accompanying drawings forming a part of the specification; nevertheless, it is to be understood that the invention is not confined to the disclosure, being susceptible of such changes and modifications which shall der fine no material departure from the salient features of the invention as expressed in the appended claims. l

, In the drawings: i I t Figure l is a front view in elevationoi an organ and associated console constructed in accordance with the principles of my invention,

Figure2 is a plan view of the mechanism for controlling a pneumatic alternate operation an organ and a phonograph, Figure 3 is a front elevatiorn of the arrangement shown in Figure 2,

Figure '4 is a vertical section taken along the line 4-""4 of Figure 5 disclosing an electric control for restarting the player roll after a phonograph has been stopped, i i

Figure 5 is a section of Figure 4, Q

Figure 6 is a detached front view in elevation of a pneumatic switch controlof a motor for operating the turntable of a phonograph,

taken along the line'5-5 ally -a circuit for a motor Figure 7 is avertical section taken along the ated organ or piano,

Figure 9 is a vertical section of a valve mechanism for starting the wind motor after being stopped and for controllingthe energization of a magnet, the organ being always in condition for manual playing,

"Figure 10 is a vertical section of another valve controlling mechanism taken along the line 10--10' of Fig. 11,

Figure 11 is a section taken along the line 11 l1 of Fig. 10,

Figure l2-isa fragmentary vertical section shown more or less diametrically of an automatic switch actuated by the tone arm of a phonograph, diagrammatically disclosing a circuit and its connectionior controlling the operation of the turntable motor of the phonograph, and Figure 13 shows more or less diagrammaticthat operates the phonograph,

Figure 14 is a vertical section showing a switch. 1

Referring more particaulrly to the drawings, designates generally an organ proper, in which a plurality of dummy pipes 21 are shown in elevation for the purpose of ornamentation.

' It will be noted that these dummy pipes, which are usually restricted to only a portion of the height of the organ 20, are shown as of full height of the organ and this is due to the fact that the console 22 is formed independently of the organ. v

The lower central portion of the organ is shown at 23 and is provided with a panel forming ajclosure for the outer end of a chamber which houses the well known type of electrically operated amplifyingunit 24. This unit is connected by wires 25 in the usual manner with a loud speaker 26 located behind the panel 27 "formed at the u'ppercentral portion of the organ.

The console 22 is of the well known type and contains keyboards; 28 whereby the organ may be manually played together with the stops 2 9. The organ 'isalso adapted to be pneumatically -34 and a mechanism for delivering records the tracker bar 65.

rod is connected to a link 42 which is secured to a bellows 43 carried by a bracket 44 which is secured to the base 45 of' a'chamber' 46 in which the player roll 30 is housed.

A switch box 47 is also carried by the bracket 44 and has wires 48 and 49 leading to an electric motor which operates 'a suction pump',lthe

motor and pump not being shown. An operating arm 50 for a switch located in the box 47 projects from the box and is connected by a link 51 with the outer end of the bellows 43 so that when the rod 40 is moved in thedirection indicated by the arrow in Fig. 3, the link 51 will likewise be moved, thereby rocking the switch arm and closing the switch within the box 47. When the switch in the box 47 is closed, the shafts 52 and 53 are revolved through the medium of the gears 54 and 55, shaft 56, chain 57 and its corresponding sprockets on the shaft 56 and the shaft 53 which acts as a re-wind for the sheet roll 30 when it is being unwound from a drum 58 secured to the shaft 52. The shaft 53 carries a drum 59 upon which the sheet 30 is rewound as it is unwound from the drum The shaft 53 is driven by means of a chain 60, a sprocket secured to the shaft 53 (Fig. 2) and a crank shaft 61. 1

A pneumatic motor 62 of the slide valve type is employed and the crank shaft 61 controls the slide valves 63 (Fig. 2).

As shown more particularly in Fig. 3, the shafts 52 and 53 are mounted in a frame 64 located in the chamber 46. This frame also carries a tracker bar 65 over which the sheet roll 30 is adapted to travel.

The sheet roll is provided with a plurality of perforations 66 which are adapted to be aligned with air openings 67 in the tracker bar and these openings are connected by means of pipes 68 with a stack 69. The sheet roll 30 is also provided with additional perforations 70, 71 and 72 which are adapted to be aligned with air openings 73, 74, and 75, respectively, and located in It will be noted that the perforations 66 in the sheet roll 30 which control the operation of the playing of these various notes and instrumentalities of the organ 20 are located inwardly of the perforations 70, 71 and 72. One end of a conduit 76 is connected with the passage 73 in the tracker bar while one end of a conduit 77 is connected with the passage 74 in the tracker bar. A conduit 78 is connected at one end with the passage 75 in the tracker bar 65.

The opposite end of this conduit 78 is connected with a chamber 79 in a valve box 80. The opposite end of the conduit 76 is connected with a chamber 81 in the valve box 80. The 0pposite end of the conduit 77is connected with a passageway 82 in a casing 83. I

The stack 69 is provided with a housing 85 which has a pipe 86 connecting the housing 85 with the suction pump so that air is exhausted from the housing 85 and the stack 69 during the the bellows 143 operation of the player in the console. A pipe 87 places the housing 85 in communication with a housing 88 located adjacent the casing 83. A pipe 89 connects the pipe 87 with a valve casing 90. A pipe 91 connects the casing with a casing 92 which is connected to the pump 62. A pipe 93 connects a chamber 94 (Fig. 8), located in one end of the casing 92 with the casing 83 as shown in Figs. 2, 3 and 8. A pipe 95 connects a governor housing 96 with a pipe 91.

A pipe 97 connects the casing 85 with a valve box 98 carried by the frame 64 and the valve within this box is controlled by means of a finger-piece 99. A second pipe 100 connects the valve box 98 with a chamber 101 formed in the casing 83. A second pipe or conduit 101 connects a chamber 103 in the casing 83 with a pipe 104 that has one end connected with the housing 85. while the other end is connected with the lower end of a valve casing 105. It will be noted that the pipe 102 is connected with the pipe 104. A pipe or conduit 106 connects a chamber lO'l with a pipe 108 and the pipe 108 extends to the casing containing the rewind valve.

A rod 109 is connected with the governor mechanism located in the casing 96.

An operating rod 110 is connected with the lower end of a lever 111 which is pivoted at 112. The upper end of the lever is connected with a link 113 and this link is connected by a rod 114 extending into the governor housing 96. This rod controls the governor 96 and, therefore, regulates the speed of the player mechanism of the console. It will also be noted that the pipe 87 is connected between the casing 88 and the housing 85 on the stack 69 so that the degree of suction is varied in accordance with the tempo desired.

A pipe 116, as shown more particularly in Figs. 2, 4 and 5, connects the pipe 100 with a chamber 117 formed in a casing 118. The bottom of the casing, as shown at 119, is provided with a bleeder port 119. A solenoid 120 is secured to the top of the casing 118 and projects into the chamber 117 so that when it is energized it will raise a valve 121 formed of magnetic material away from the pipe 116 so that air from the atmosphere through the port 119 will enter the pipe 116. Wires 122 and 123 are connected with a source of current 124 as shown more particularly in Fig. 12 and the terminals of these wires are connected with switch elements 125 and 126 carried, respectively, by a shaft 127 of the tone arm 34 and a base 129 upon which the tone arm is mounted.

The motor 38 for operating the turntable of the phonograph is connected by wires 130 and 131 with a switch 132, the switch being controlled by an arm 133 shown more particularly in Figs. 3, 6 and 13. This switch arm is adapted to be rocked upwardly or downwardly from the off position to the on position and vice versa.

A lever in the form of a plate 135 is hingedly mounted at 136 on a supporting means 137 for the valve casing 80. The plate is triangularlyshaped and is provided with a notch 138 which receives a pin 139 secured to a rod 140. This rod has one end pivotally mounted at 141 with Theother end of the rod is pivotally connected at 142 with the outer end of a bellows 143. This bellows is also supported by the member 137. A link 144 connects the outer end of a lever 135 with the upper free end of the operating arm 133 for the switch in the switch box 132. i

Referring more particularly to Figs. 6 and 7 it will be seen that a piston valve 150 controls the communication betweenthepipe 106 and a chamber 151 which is in communication with a passage-152 which connects the bellows 143 with the chamber 151. A diaphragm 153 is connected by a stem 154 with the piston valve 150. Asecond piston valve 155 is connected by a steml56 with -a diaphragm 157. The piston valve 155 is located in the chamber 158 and this chamber is connected by apassage 159 with the chamber 107. Aperforated coveringlBO' is secured to one face of the casing so that a passage 161 willconnect the atmosphere with thechamber 151 while a passage 162' connects the chamber 158 with the atmosphere. Referring more particularly to Figs. '4, 5 and 9 it will be seen that a valve 1'70 normally closes the passage 171 which leads from the atmosphere to th'e chamber 103. The passage 171 is also in communication with the chamber 172 in which a valve 173 is located and maintained in'a normal position by means by a diaphragm 174. The valve'173 normally closes the passage 93, thereforefcutting oif communication between said passage and a passage or conduit 82 formed in the casing. 83. A valve 170 is carried by a diaphragm 175' and this diaphragm is located above. the chamber'lOl.

Referring. more particularly to Figure 8 it will be seen that a passage 176 connects a chamher. 177 in the casing 92 with the windmotor. The chamber 177 is also in communication with the pipeor conduit 91 through a passage-178. A diaphragm 179 isolates the chamber 177 from the. chamber94 and carries a valve 180 which isadapted to engage the inner end of the passage 176 for cutting off communication betweensaid passage and the pipe 91. It may be noted that the pipe 93 is in communication with the chamber 94.v 1 Referring more particularly to Figs. 10 and 11, it will be seen that the housing contains a chamber 181 which is in communication with the pipe 97. A second chamber. 182 is cylindrical in form and is located atright angles to the chamber 181. An annular chamber 183 embraces the chamber .182 and is normally in communication with the said chamber by aport 184. A diaphragm 185 is connected with a .valve stem 186 which operates a valve 187. 10- .catedaiexteriorly. of the casing 85 and cuts off communication between the atmosphere and the chamber 182. It will benoted that the annular. chamber 183 has an extension 188 which is in communication with the pipe 87. A pipe 189 connects the housing 85'with the stack 69. .Webs 190and 191 support'the valve stem 186 within the cylindrical chamber 182. ,A spring 192 engages at one end the web 191 and a head 193 on the valve stem 186 for maintaining the diaphragm 185 away from the innerend of the chamber 182 and the annular passage 183. The operation of my device is as follows: The finger-piece 41 is grasped and moved to 'the right in Figure 3; thereby reciprocating the rod 40 and opening the bellows 43. At "this time the link 51 is reciprocated moving the switch to the on position-and closing the circuit to the motor (not shown) which operates the windmotor562. At this time the casing 105 controls the usual. operating valves foropening the suction of the stackso that the motor 62 is operated and the player roll 30 is placed in motion. This operation which has just been described is the normal method of 'initiatingzthe operation of the roll'of aplayer of an organ or piano. The movement of the: member '41 also closes the circuit to the amplifier tubes of the amplifying unit so that said-tubes will be heated.

When the roll, however, reaches approximately the first perforation which is in the roll 30 for reproducing amusical composition, the perforation70 in the roll registers with the passage 73 in thetracker bar 65. This places the pipe or conduit 76 in communication with the atmosphere so that the chamber 81 (Fig. 7) now contains atmospheric pressure which acts upon the diaphragm 153,'moving the valve 150 to open position so that the suction from pipe 106 which i's connected with the stack 69, will reduce the atmospheric pressure in the pneumatic means or bellows143, causing the bellows to collapse and through the pm 139 and rod 140 causing reciprocation of theplate or lever 135. a When this'happens the'switch in the box 132 is closed by the arm 133 and the motor 38 (Fig. 13) which opcrates the turntable of the phonograph is set in operation. i

- Thephonograph in this instance is self-playing and electrically operated and is of a well known'type in which the motor 38 through the rotation of the turntable 37 causes the tone arm 34 of the phonograph to be moved to the proper position whereby the needle of the sound box will be placed in registration with the outermost groove of a record '35 so that the record will be brought into playing condition at a period slightly after the starting of the roll 30 in the console. The detailsfor controlling the movement of the tone arm of the phonograph and the application 'of the needle in the soundbox to the record is not described in view of its well known construction and particularly since this construction forms no part of the invention defined in the present application.

The player roll 30 has not been stopped so that as it advances the auxiliary perforation 71 in the said perforation movesinto registration with passage 74 in tracker bar 65. This passage 74 is connected by the pipe or conduit 77 with the casing 83, conduit 77 being in communication with the passage 82 in said casing, thereby supplying atmospheric air tothe passage 82 which raises the valve 173 so that the passage 93 in the casing is likewise under atmospheric pressure. This passage or conduit 93 extends to the chamber 94 in the casing '92 so that the atmosphericpressure will act on the diaphragm 179, moving the valve 180'in closed position against the inner end of theconduit 176, thereby cutting oil communication between this conduit and the conduit '91 which is in communication with the stack 69 in which an exhaust is being created by the usual exhaust pump of the player. Since the vacuum has been cut off to the pipe 176, in the casing 92, the motor 62 is stopped, thereby causing the player roll 30 to be stopped. At this time a musical composition is being reproduced by the phonograph and the roll in the organ console is in a waiting position to be started again when the-phonograph has completed its reproduction. i I

Assoon as the needle of the sound box of the phonograph has reached the innermost conis raised, thereby opening theinner "end of the 156 pipe 116 to the chamber 117 which is in communication with the atmosphere through the bleeder passage 118. Since the pipe 116 is connected with the pipe 100 (Fig. 2) and the lastmentioned pipe is in communication with the chamber 101 in casing 83, atmospheric pressure will be supplied to said chamber and act upon the diaphragm 1'75, thereby opening valve 1'70 and permitting atmospheric pressure to enter chamber 103 and pipe 102 (Fig. 9). The pipe 102 is connected with the pipe 104 which is in communication with the housing and likewise the stack 69.

When the valve 1'70 (Fig. 9) has been opened to the atmosphere, atmospheric pressure is supplied to the chamber 1'72 in the casing 83, thereby acting on the diaphragm 1'74 and thus closing the valve 1'73 and likewise the conduit 93 to the atmosphere, or, in other words, cutting on the passage 82 and the conduit '77 from the conduit 93. When the circuit 93 is closed to the atmosphere, the suction from the motor and likewise the stack 69 is again applied to the conduit so that the diaphragm 1'79 will be acted upon, thereby opening the valve 180 and placing the conduit 91 in communication with the conduit 1'76 so that the motor 62 will again be placed in operation and the next organ composition begins to play.

When the last perforation '72 in the roll registers with opening "75 in the tracker bar 65 the turntable of the phonograph is stopped. This is due to the fact that suction is effected through the pipe '78 leading to the chamber '19 of the casing 80. Suction acts on diaphragm 15'7 closing valve 155, thereby cutting off atmospheric air to pipe 106 so that suction from the pipe 106 and pipe or conduit 158 will act on bellows 143 and move the same to the position shown in Fig. 6. Suction in bellows 143 being relieved the rod 140 will be moved to the left and close the switch in casing 132 and cut off the circuit to the phonograph motor.

When it is desired to have the roll pass over the tracker bar without permitting the roll to produce music the stop or silencer 99 is turned (Fig. 3), thereby opening a valve in the casing 98 for placing the conduit 97 in communication with the atmosphere. Atmospheric pressure acts upon the diaphragm 185 in the chamber 181, opening the valve 187 against the tension of the spring 192, so that atmospheric pressure is supplied to the conduits 182, 8'7, and 189, the conduit 189 being connected with thestack 69. The suction pump is then drawing atmospheric air into the stack 69 so that the pipes 68 have been relieved of their suction and the automatic operation of the console has been cut out. When, it is desired, however, to revert to the automatic operation of the console, the stop 99 is reversely operated, thereby placing the console in proper condition for automatic operation.

It will be appreciated that the necessary re- I wind and replay mechanism is included in this console for the player roll 30, but since it forms no part of the present invention description of this matter has been avoided. a a

While I have shown an organ and a console connected with the organ for operating the same, it will be appreciated that a phonograph may be embodied in a self-playing piano and wherever the term console is employed it is intended to include the automatic mechanism for operating the player piano.

While I have shown a construction in which the operation of the phonograph is initiated by the actuation of the rod 140, it will be appreciated that a coin-controlled mechanism may be employed for causing closing of the switch that operates the motor for revolving the turntable of the phonograph. By this construction it will only be necessary to employ the co-operating perforations '70, '73 and '71, 74. The perforations '72 and '75 will not be required in the coin-controlled mechanism since the last-mentioned perforations co-operate to stop the motor which revolves the turntable. In the coin-controlled mechanism the stopping of the turntable will be automatic when the record has been completed.

The magnet 120, shown in Figs. 4 and 5, is energized at a self-stopping point in the playing operation of the coin-controlled mechanism, thus taking the place of the contacts 125 and I claim:

1. In combinatioma self-playing musical instrument and a phonograph, means for operating the musical instrument alternately with the phonograph the musical instrument including a tracker bar having passages and comprising a player roll provided with a plurality of perforations adapted to be alined with passages in the tracker bar of the musical instrument, a bellows in communication with a passage in the tracker bar and having valve-controlled connections with the exhaust pump of the musical in strument, a piston valve acted on by atmospheric pressure when a perforation has alined with the passage in the tracker bar for connecting the bellows with the exhaust pump of the musical instrument and causing movement 01' the bellows, a circuit, a motor for operating the phonograph and included in the circuit, an electric switch actuated by the bellows for closing or opening the circuit to the motor of the phonograph, and means for stopping the player roll when the phonograph is placed in operation.

2. In combination, a self-playing musical instrument and a self-playing phonograph, means for operating the musical instrument alternately with the phonograph the musical instrument including a tracker bar having passages and comprising a player roll provided with a plurality of perforations adapted to be alined with passages in the tracker bar of the musical instrument, an electric circuit, a motor in the circuit for operating the phonograph, a switch in the circuit, means for closing the switch said means being placed in operation when a perforation in the roll alineswith a passage in the tracker bar, and means for causing stoppage of the player roll just before the phonograph is placed in operation.

3. In combination, a self-playing musical 1nstrument and a self-playing phonograph, means for operating the musical instrument alternately with the phonograph the musical instrument including a tracker bar having passages and comprising a player roll provided with a plurality of perforations adapted to be alined with passages in the tracker bar of the musical instrument, an electric circuit, a motor in the circuit for operating the turntable 01' the phonograph, a switch in the circuit, means for closing the switch, said means being placed in operation when a perforation in the roll alines with a passage in the tracker bar, means for causing stoppage of the musical instrument at approximately a time when the phonograph is placed in operation, means for cutting off the phonograph when the record has been completed, and means for initiating operation of the player roll when the phonograph has been stopped.

4. In combination, a self-playing musical instrument and a self-playing phonograph, means for causing alternate operation of the musical instrument and the phonograph and comprising means for initiating operation of the musical instrument, a tracker bar having a plurality of passages, the musical instrument including an exhaust pump, a player roll having a plurality of perforations at the termination of the series of perforations for reproducing a musical composition and adapted to be alined consecutively with the perforations in the tracker bar, a diaphragm acted on one face by the exhaust pump of the musical instrument, a pneumatically operated means, a valve controlled conduit leading from the exhaust pump to the pneumatic means, a valve controlling said conduit and actuated by the diaphragm toclosed position by the exhaust pump, a pipe connecting an auxiliary passage in the tracker bar with the opposite side of the diaphragm for creating atmospheric pressure on the diaphragm to open the valve and operate the pneumatic means, an electric circuit, a motor for operating the phonograph, a switch in the circuit connected with the pneumatic means and adapted to be closed when the pneumatic means is operated, and means for causing stopping of the console player roll when the phonograph is set in operation.

5. In combination, a self-playing musical instrument and a self-playing phonograph, a player roll, means for operating the musical instrument and likewise the player roll, means for operating the phonograph, a tracker bar having passages, the player roll having auxiliary perforations adapted to be alined with passages in the tracker bar of the musical instrument, means pneumatically actuated when an auxiliary perforation in the roll alines with a passage in the tracker bar for causing operation of the phonograph, means pneumatically actuated when a second auxiliary perforation in the roll alines with a passage in the tracker bar for causing the operating means for the musical instrument to be stopped.

6. In combination, a self-playing musical instrument, a self-playing phonograph, a player roll, means for operating the musical instrument and likewise the player roll, means for operating the phonograph, a tracker bar having passages, the player roll having auxiliary perforations adapted to be alined with passages in the tracker bar of the musical instrument, means pneumatically actuated when an auxiliary perforation in the roll alines with a passage in the tracker bar for causing operation of the phonograph, means pneumatically actuated when a second auxiliary perforation in the roll alines with a passage in the tracker bar for causing the operating means for the musical instrument to be stopped, means for stopping the phonograph when the reproduction of a record has been completed, and means for starting the player roll.

'7. In combination, a self-playing musical instrument and a self-playing phonograph, a player roll, means for operating the musical instrument and likewise the player roll, means for operating the phonograph, a tracker bar having passages, the player roll having auxiliary perforations adapted to be alined with passages in the tracker bar, means pneumatically actuated when an auxiliary perforation in the roll alines with a passage in the tracker bar for causing operation of the phonograph, means pneumatically actuated when a second auxiliary perforation in the roll alines with a passage in the tracker bar for causing the operating means for the player roll to be stopped, means for stopping the phonograph when the reproduction of a record has been completed, and means pneumatically operated for actuating the player roll.

8. In combination, a self-playing musical instrument and a self-playing phonograph, a player roll means for operating the player roll, means for operating the phonograph, a tracker bar having passages, the player roll having auxiliary perforations adapted to be alined with passages in the tracker bar, means pneumatically actuated when an auxiliary perforation in the roll alines with a passage in the tracker bar for causing operation of the phonograph, means pneumatically actuated when a second auxiliary perforation in the roll alines with a passage in the tracker bar for causing the operating means for the player roll to be stopped, means caused to be actuated when the reproduction of a record of the phonograph has been completed for starting the player roll, and means pneumatically operated when a third consecutive perforation in the roll has alined with a corresponding passage in the tracker bar for causing a discontinuance of the operating means for the phonograph.

9. In combination, a self-playing musical instrument and a self-playing phonograph, a player roll in the musical instrument means for operating the player roll, means for operating the phonograph, a tracker bar having passages the player roll having auxiliary perforations adapted to be alined with passages in the tracker bar, means pneumatically actuated when an auxiliary perforation in the roll alines with a passage in the tracker bar for causing the operating means for the player roll to be stopped, means electrically operated when the reproduction of the record of the phonograph has been completed for causing starting of the player roll, and means pneumatically operated when a third consecutive perforation in the roll has been alined with a corresponding passage in the tracker bar for causing discontinuance of the operating means for the phonograph.

LOUIS LUBEROFF.

Images