US2011216A

US2011216A - Phonographic announcing mechanism or the like

Info

Publication number: US2011216A
Application number: US713417A
Authority: US
Inventors: John L Franklin
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-02-28
Filing date: 1934-02-28
Publication date: 1935-08-13
Anticipated expiration: 1952-08-13
Also published as: USRE21111E

Description

Aug- 13, 1935; J. L. FIFANKLlN v 2,011,216

PHONOGRAPHC ANNOUNCING MECHANISM OR THE LIKE GumMMf/f vAug. 13, 1935. 1- L, FRANKUN 2,011,216

PHONOGRAPHIG ANNOUNCING MECHANISM OR THE LIKE Filed Feb. 28, 1934 41o sheets-sheet 2 Aug. 13, 1935.

Jfl.. FRANKLIN PHONOGRPHIC ANNOUNCING MECHANISM oR THE'LIKE 10 Sheets-Sheet 5 Filed Feb. 28, 1954 Aug. 13, 1935. J. l.. FRANKLIN 2,011,216

l PHONOGRAPHIC ANNOUNCING MECHANISM 0R THE LIKE Filed Feb. 28, 1934 l0 Sheets-Sheet 4- :3mm/a Aug. 13,' 1935.- J. L. FRANKLIN 2,011,216

' PHONOGRAPHIC ANNQUNCING MECHANISM 0R THE LIKE Filed Feb. 28, 1934 l0 Sheets-Sheet 5 @rr-fuma l Aug. 13, 1935. J. FRANKLIN 2,011,215

PHONOGRAPHIC ANNOUNCING MECHANISM OR THE LIKE 10 Sheets-Sheet 6 Ill vv o

Filed Feb. 28. 1954 Aug. 13, 1935. J'jl.. FRANKLIN 2,011,216

`PI'OOGYRPI'IIC ANNOUNCING MECHANISM OR THE LIKE Filed Feb. 28, 1954 10 Sheets-Sheet 7 Aug. 13, 1 935. y J, FRANKLIN 2,011,216

PHONOGRPHIC ANNOUNCING MECHANISM 0R THE LIKE Filed Feb. 28, 1954 10 Sheets-Sheet 8A fie jme/nm.

Aug. 13, 1935. J. l.. FRANKLIN l PHONOGRAPHIC NNOUNCING MECHANISM OR THE LIKE Filed Feb. 28, 1934 1o sheets-sheet 9 Patented Aug. 13, 1935 UNITED STATES PATENT OFFICE PHONOGRAPHIC ANNOUNCING MECHANISM 0R THE LIKE John L. Franklin, Atlanta, Ga. S S i Application February Z8, 1934, Serial No. '113,417 l i s2 claims. (c1. 17e- 6)V The invention relates to the field of phono- Fig. 8 is a face view of the hour record shifting graphic devices useful as a combined time and ratchet: advertising announcer and for many other pur- Fig. 9 is a section on line 9 9, Fig. 1, on an poses. enlarged scale;

It is an object of the invention to provide a Fig. 101s a detail section on line HIJ-I0 of Fig. 1 5

' ldevice that may be combined with one or a pluon an enlarged scale; y I'ality 0f. telephones t0 aumatically Speak the Fig. 11 is a face View of the minute record shifttime over the telephone to the nearest full minute. ing ratchet;

It is a further object of the invention to pro- Fig 12 is a Section on en enlarged scale taken lo vide a device having no physical connection with on line |2. |2 of Fig, 1; i 10 the telephone Circuits which Will Perform the Fig. 13 is a side elevation of the reproducer stated function for long periods of time without carrier driving com with frame parte shown in attention. section; pi

It is a further object to provide a device of this Figs i4, 15, and 15 arosections en correspondi5 character usmg two records utilized seriatum to ing unes of Fig i showing *standing* position. 0i. 15, reproduce o Smale Spoken sentence' certain additional switches with their actuating It is a further object to provide a' time ancams; Y Bouncing device actuated automatically in To Fig. 17 is a side elevation of a receiver lifter sponse to a telephone call, which will hold calls and Switch actuator; 20 on any one or more phones associated there-With Fig. 18 is a plan view of the structure of Fig. 17 20 which calls are completed while the device is in omitting the fragment of the telephone instru.. operation in response to a' previous call or calls, ment; .and when Said anoouncemont in process is com" Figs. 19, 20, and 21 are sections on the correpleted will immediately repeat the announcement Sponding lines of Fig 18 showing standing posiover the later cans which have been stored m tions of switches actuated by the receiver lifter; 25

the meantime Fig. 22 is a detail section on une 22-22 of Fie.

It is a further object to provide means to lock i7; v out theannouncement initiation while the records Fig 23 is e diagram of circuits;

are being shifted and to lock out the record shift- Fig- 24 is a. diagram of a modified form of Cir- 3o ing means while an announcement is in process. cuits; aand 30 It is a further object to improve the quality of Fim 25 is a diagrammatic vieW of a form of Cam reproduction of sounds by photo-electric reproto be used with the circuits of Fig 24 uuctlon' I As shown the device comprises three principal It is a further object to provide novel means mechanisms inter-connected electrically or mefor changing a record automatically so that difonanioaiiy oi. bothi in Such manner as to each 35 feront ones of a plurality of records upon a oar' control the action of the other two under some Tiel may loo in position at' Various tlmosconditions. The mechanisms referred to are Furtherobjects of the invention will appear sound reproducing mechanism, reeerd Shifting from the following description when read.y in mechanism, and mechanism to associate tele- 40 connection with the accompanying drawings phones with the sound reprodneing mechanism 40 i showing an illustrative embodiment of the inven- There is also a system of c1eetrie cent1-01 whereby tion, and Wherein y I the actuation of each of said mechanisms is cor- Fig. 1 is a plan view; re1ated vFig. 2 is an end elevation; The sound reproducing and record shifting lo Fig. 3 iS diagrammatic View illustrating the mechanisms are shown as mounted on abase 25 45 method of using aflm record; provided with an upstanding transverse slab 26. Fig-4 iS an end ViGW from a diIeCliOn Opposite To support lm sound record strips, the cylinl-G the View Of Fg- 2; ders 21, 28 are shown each formed as shown for Figs. 5 and 6 are sections drawn to an enlarged cylinder 28 in Fig. 10 with a face plate 29 which 5o Scale, taken 0n lnSS 5-5 and 6 5, respectively, may be secured to the cylinder by means of angles of Fig. l, showing the standing position of cer- 30. The face plate isshown as removably setain switches; cured to a ring 3| by means of screws 32, the ring Fig. '7 is a section on an enlarged scale, on line 3l being screwthreaded on shaft 54 and standing 'l-Fl of Fig. 1; iush with slab 26. 55

` Record shifting mechanism To revolublysupport the cylinder, shaft 54 is mounted in anti-friction bearings 34 in block 35. The shaft 54 is arranged to be driven, through a one-Way clutch to be described, by disk 36 xed on vsleeve 33 freely revoluble on shaft 64, a step at a time, by means of gear teeth 31 on the edge of the disk in mesh with pinion 38 carried upon the hub of Geneva gear 39 operated by pin 48 carried by disk 4| once in each revolution of the disk 4|, said disk 4| being fast on shaft' 42, driven by motor 43.

The motor 43 is controlled by mercury switch A to make a full rotation of shaft 42 once during each minute, the said rotation being made during a very few seconds after which the motor is stopped by circuits and switches to be described. To operate the mercury switch D, which is mounted onan arm 44, see Fig. 14, pivoted at 45 on a xed pivot, the arm carries a roller 46 riding on a cam 41. The cam 41 is driven at the rate of one revolution-per minute by any suitable timing operator as by the synchronous motor 48. The switch` A. being briey closed and then again opened by th motor 43 willftart and close a-hold circuit by means to be described which will'cause the motor to complete the turn of disk 4|.

'I'he record carrying cylinders 21, 28 are shown as formed with grooves to guide the placement of sound film records thereon.

Cylinder 21, shown as the hour announcing cylinder, is formed-with twelve spiral grooves in the nature of a twelve thread screw, while cylinder 28, shown as the minute announcing cylinder, is formed `with sixty spiral grooves in a like manner. It follows that turning or shifting of cylinder 21 one-twelfth of a revolution or of cylinder 28 onesixtieth of a revolution will bring the succeeding record into reproducing position.

Cylinder 28 is so shifted each minute as above d escribed1 l To shift cylinder 21 once each hour, sleeve 33 carries a cam 66, the camk shown as pinned to disk 36 with'a spacer 61 interposed, see Fig. 10. Coacting with cam 65, an arm 68, Fig. 7, is shown pivoted upon block at 69, and having a projection 10 bearing on the cam. The free end of arm 68 is pivoted to a bar 1|Y carrying rack Ateeth 12in 4mesh with gear teeth 31'` carried by disk 36'.

The projection 10 is held against the cam by tensile spring 13 anchored at its ends to block 35 and to. the arm 1| respectively, the strength of the spring being amply sufficient to easily turn cylin- 'der 21. The arrangement is such'that arm 1| ratchet teeth.

The bases of cylinders 21 and 28 are shown as marked with properly designated graduations cooperating with a zero mark on slab 26 for convenience in setting the cylinders to a correct timeannouncing position. The mechanism is so timed that at the end of each sound reproducing action 75 tion.

ontinuously rotating cam 41, the

`Sound reproducing mechanism The cylinder 28 is driven in a sound reproducing direction by main'motor 49driving shaft 58 through a speed reducing gear, which shaft carries gear 5| in mesh with gear 52 carried by sleeve 53, Fig. 10, freely revoluble on shaft 64.

The sleeve 63 through pin 55 drives ring.66, which ring is formed with ratchet teeth 61 coacting with ratchet teeth 58, 1l, carried by disk 59 fast on shaft 54.

Disk 59 is formed with an annular idangeV 68 against the interior surface of which clutch arms 6|, Fig. 7, pivoted upon disk 86 are pressed by springs 62 shown as acting in tension.

To yieldingly press 'the ratchet teeth into engagement, springs 62 are provided acting in compression between lring 56 and flange 63 on sleeve 63. The pin- 55 slides in an opening in flange 63. The disk 59 thus drives the shaft 64.for record shifting through clutch arms 6| and for sound reproducing by action of

ratchet teeth

61, 68 with ovenunning of the clutch arms 6|.

The driving in sound reproduction of cylinder 21 is the same as that of cylinder 28 with the exception that an idle gear 64 is interposed be. tween gear 6| and gear 62' to cause the cylinders to drive in opposite directions. for convenience of design.

'I'he spring 62' is shown as of a different design from springs 62 only for purpose of illustration of thei'act that either form may be To reproduce sound fromphoto-nlm sound rec- 88 also mounted on plate 18. The casing 16 is utilized to house any known form of audio frequency amplier details of which are not necessary to illustrate.

To move the reproducer head, the carriage is shown, Fig. 13, as provided with a pivotally mounted shoeV 8| traveling in and driven by

cam grooves

82 and 83, the groove 82 causing outward travel and groove 83 return travel of the reproducer head with a single direction of rotation of the cylinder 8,4 in which the grooves are formed. The shoe 8|will be caused to pivot at the ends of its travell by means of the form of interconnection of the grooves 8 2, 83 at 85, 86 in a well knownmanner.

The cam cylinder 84 is mounted on a shaft 86' in bearings 81, suspended from base 25, the shaft 86' being driven by gear 88 in mesh with gear 6|, see Fig. 2.

To control the interactions of the various electrical drives and sound reproduction, the mechanism already described, in addition to mercury switch D, is provided with mercury switches E and F actuated by

cams

89 and 90, respectively, which are fixed on shaft I5, and mercury switches A, B, C, and G, A, B, and C being all controlled by cam 9| and G being controlled by cam 92, cams 9| and 92 each being fixed on a shaft 93 driven by

gears

94, 95, through pinion 96 fast on the end of shaft 64. The ratio of

gears

94, 95 and pinion 96 is such as to cause one revolution of shaft 93 for each complete out and back movement of the reproducer head.

iii

' neath the receiver from Wire |35, wires |4I,

Telephone connector The mechanism for associating a telephone with the sound reproducing mechanism is, for purpose of convenient location, shown in Figs. 17 and 18 as mounted on a separate base 91. Said mechanism is shown as comprising a motor 98 driving a shaft 99 provided with an end bearing |00, the drive of said shaft being through reduction gear not shown.

The control of motor 98, to be described, is such that shaft 99 will be given one complete revolution when a telephone call Ais completed, in a little more time than will be required for e, complete sound reproduction act, whereupon motor 98 will be cut off. l

Fixed on shaft 99v are switch cams |0|, |02, |03 to control mercury switches H, I, and J, and receiver lifting cams |06. To lift the receiver |05 of a time announcing telephone, a plunger |06 is shown as slidably mounted in a cylinder |61 carried by a base |06, pierced by shaft 99 and secured on base 91. 'Ihe plunger |06 is shown as carrying a roller' |09 bearing on cam |04. The1 plunger |06 carries a plate ||0 projecting be- |05. vWhen the shaft 99 and cam |04 are revolved in the direction of the arrow in Fig. 22, the receiver will be lifted and supported during a major portion of revolution of shaft 9.9 and lowered when the revolution is completed. A

Control served. At each telephone is a microphone |68 placed to be affected by the ringer., Also an induction coil ||2 to be affected by the sound reproduction of the device which will induce in the telephone circuitsthe voice currents of the sound reproduction.

When the ringer of the telephone affects microphone the pulsating current will act through wires ||3, ||4 to cause iluctuations in coil ||5, which fluctuations will be amplified by tubes H6, ||1 to cause coil ||8 to be energized to attract armature H9, thus closing a circuit from power Wire |20,wires |2|, |22, |23, |24, contact |25, wire |26, mercury switch J, which is normally closed, wire |21, magnet |28, wires |29, |30, to power lwire |3|. Magnet |23 will then pull down armatures to close switches |32 and |33.

The current passing through mercury switch G, as above described, will also close a circuit |42, solenoid switch wires |53, |54, |55, mercury switch I, wires |56,

|51, |58, normally closed mercury switch E, wires |59, |60, mainmotor 49,'wires |6|, |62, |63, to power wire |3|, thus starting the main motor.

Revolution of the main motor 49 will cause revolution of cams 9| and 92 which will irrimediately close normally open mercury switch A, thus providing a hold-up circuit on motor 99,

'through wires |63, |62, |6|, motor 99, wires |69,

|59, mercury switch A, wires |64, |53, to power wire |20, thus causing motor 49 .to produce a complete revolution of shaft`v 93 and a complete out and back movement of the sound reproducer. At the same time, normally closed switch B will be opened to prevent an operation of the record shifting motor 43, the circuit of which will be described, in order that the record shifting operation may not be carried out while the sound reproducing action is'in process.V

When the sound reproducing head reaches the end of its outward travel, mercury switch C will be shifted to extinguish lamp |55 and through wire to energize exciter lamp |66 through wire |61, |52 to battery.

The solenoid switch |63V will be held closed during the operation of the lifter motor because its circuit is controlled by mercury switch H.

The timing motor 48 is at all times energized through wires |63 and |53 respectively in connection with the power/wires |29 and |35 and through the cam 41 will cause at the end of each minute a circuit to be closed from wire |20 through wires |53, |68, switch D, wire |69, motor 43, wires |62, |53 to wire |3|. at each closure of the mercury switch D the timing motor 43 will be started into operation. Its initial turning movement will close a circuit from power wire |20 through wires |53, |10, normally closed switch B, wires |1|, |12, mercury switch F, wire |13, motor 43, wires |62, |63, to power wire |3|. This circuit will be available when the sound reproducing is not in action to provide a. hold-up circuit for timer 43 to cause a complete revolution of shaft 42 to shift the records, as described, `but if the sound reproducer is in action, mercury switch B will be opened.

Therefore after the initial movement of the motor 43, due to the circuit first described therethrough, the motor will be stopped until the mercury switch B is again closed when it will be able to complete its action of shifting the records.

The revolution of motor 43 will also open the normally closed switch E which controls the initial action of the main motor 49, and therefore the main motor cannot be started while the record shifting motor 43 is in action.

The variation of the selenium cells 80 produced by the sound film record is amplied by the amplifier in the cylinder ond audio frequency amplifier |14, the voice currents passing by way of wires |15, |16, to modulate the voice coil ||2 thereby impressing the announcement upon the telephone by induction. When the solenoid switch |28 is energized and closes switch |33', a locking circuit through mer- .cury switch J, which is normally closed, is provided by wiresl |20, |22, |23, switch |33, wire 15 passed through a sec-` Therefore |38, switch J, wire |2'|, coil |28,'wires |29, to |3I. This circuit will hold the call until motor 98 starts to initiate the response when it will be broken to release switch |28 ready for a succeeding call. While coil |28 is thus energized, switch |32 will also be vclosed but since the initial motion of the motor 98 depends upon a circuit through mercury switch G, which is broken during sound reproducing action, motor 98 will be held from operation but will be immediately started when the existing action of the mechanism terminates.

If, therefore, but one telephone is being served,

` al1 others will be held out and all calls that have been stored will be served when ythe one in process is completed. Should there be stored calls waiting when motor t9 completes a cycle, it will immediately be again started by closed switch |32 in series with G unless the motor has started to make a record shift which is held against completion during action of motor 39. If motor d3 has made a start to shift a record, it will have opened switch E so -that motor i9 cannot be started until the record is shifted. As between a stored call and record shifting operation therefore, the latter will have preference in order to not announce an incorrect minute.

The use of reected light from aphotographic sound record is not new. However, in former structures for using this method, of which I am aware, the reflection has been wholly or mainly from the surface of the record, the modulation being produced by relative darkening of adjacent portions of the record by the photographic process. In the structure disclosed herein, the portions of cylinders 2l and 28 underlying the transparent film record utilized is made highly reilective as by chromium-plating the bottoms of the grooves, if metallic cylinders are used, or by placing a thin ribbon of chromium plated metal in th'e bottoms of the grooves, if non-metallic cylinders are used.

. It is found that by this expedient a marked improvement of tone quality results above that of any other method. The best theory known to me to account for the improvement is as follows: The natural sound of the voice is a substantially continuous tone. When this is applied to a. photo lm in the usual manner, dark areas |80, Fig. 3, are produced separated by transparent areas |8| When reproduced" by transmitted light or light reected from the surface of the lm, these areas act cleanly in sequence. By my method however, a. ray at one time passes in and out again through a dark portion |80, as at |82, then in through a portion of the same dark area and out of the ad- .jacent transparent area |8| in the manner indicated at |83, then in at a transparent area and light almost altogether, which does not detract from the correctness of the theory.

In this manner the effect of the adjacent dark areas is elided, reproducing a substantially continuous tone which is very natural.

Operation 'Ihe operation should be clear from the above description. To summarize: The device may be` associated with a plurality of telephones, the control of the telephones being in parallel.

The ringing of a bell when the device is'idle causes the receiver lifting motor to start to lift the receiver and action of this motor causes the sound reproduction motor to start. Once started, each of. these motors will complete a cycle and then stop.

The minute announcing record is changed each minute and the hour record at the end of each hour, but record shifting cannot take place while the main motor` is running, nor can the main motor be started while a record is being shifted.

The calls over all phones that are completed while other'telephones are being answered are stored, and all thus stored calls are answered together when a cycle in process is completed.

General advertiser l'f'he mechanism described may be used for other `purposes than time announcing, as for instance for general advertising.

A diagram of circuits for controlling the mechanism of Figs. l-l6 for such a purpose is lillusttrated in Fig. 24. When usedyin this manner the telephone associating mechanism and circuits are omitted.

In this form the time motor 48 is continuously running and may be geared to shift records at intervals other than one minute and also if desired, cam 65 may be modified to at all times shift the records simultaneously, in an obvious manner.

Mercury switches D and P are both, controlled by the form of cam shown at in Fig. 25 driven by motor 48. When the high point on the cam acts, mercury switch P will .close to complete a -circuit from wire |3I, through wires |86, |81, 4motor 49, wires |88, |89, |90, I 9|, mercury switch P, wires |92, |93 to wire |20. Starting of motor 49 controlling switches A and C will close A, placing a hold circuit on the' motor through wires |93, switch A, wires |89, |88, motor 49 and wires |81, |86 to |3|, thus causing motor .'49 to produce a cycle of sound reproduction and stop by opening switch A. This action will take less time than one-half revolution of cam |85.

Minor changes may be made in the physical embodiments of the invention within thev scope of the appended claims without departing from f the spirit thereof.

to be reproduced, by circumferential movement of said support.

2. In a device of the class described, in combination: a revoluble support; a. plurality of sound records extending spirally at least partially around said support; means to reproduce sound from said records; automatically actuated means to change theprecord in position to be reproduced, by circumferential movement of said support; and time controlled means to initiate action of said record changing means at predetermined intervals. l

announcing ing; and a plurality of sound records successively moved to announcing position by said shifting means..

4. Telephonic announcing mechanism comprising,in combination: a. telephone circuit; phonographic reproducing means to-modulate the telephone circuit; means to associate said telephone circuit with said means when a call is received; means to shift the sound records of said phonographic means to cause desired announcement thereby; and control means acting when one of the three rst named means is operating to prevent operation of either of the other two.

5. Telephonic announcing mechanism comprising, in combination: normally'stationary phonographic reproducing means; a plurality of called telephones; sound record shifting means; means to associate any of a plurality of said telephones with said phonographic means; and control meansto delay association of telephones over which calls are completed while either of the irst two named means is acting and to complete said delayed association and initiate renewed movement of the Vreproducing means thereafter.

6. Telephonic announcing mechanism comprising, in combination: normally stationary phonographic reproducing means; a plurality of called telephones;- means to associate any called telephones of said plurality simultaneously with said iirst named means; and means responsive to completion of a call on any of said telephones to cause movement of said first named means.

7. Telephonic announcing mechanism comprising, in combination: a plurality of called telephones; normally stationary phonographic reproducing means common to said telephones; a

plurality of means each individual to one of said telephones to associate the same with said reproducing means upon completion of a cali thereon; means common to said telephones to delay action of the second named means in response to calls on any telephones completed whiler the first named means is acting and to initiate such delayed response and renewed movement of the reproducing means thereafter.

8. Phonographic announcing mechanism comprising, in combination: a pair of cylindrical record carriers; sound records spirally mounted on said carriers; a reproducer head common to said carriers; reproducing means mounted on said said head individual to said carriers; means to cause out" and return traversing .movement of said head over said carriers; means to cause one ment; said last named means and said movements timed to cause a continuous announcement from the pair of records on said carriers; and automatically acting means to move said carriers to bring different records to acting p osi- A tion.

l0. Time announcing means comprising, in combination: minute and hour record carriers;

sixty and twelve sound records spirally mounted' on and eirtending at least partially around the respective carriers; the ends of said records terminating at an edge of each carrier at points equidistantly spaced thereabout; time controlled means to shift said carriers one-sixtieth of a revolution each minute and one-twelfth of a lrevolution each hour respectively; reproducing means movable over said carriers and means to move said reproducing means to announce the hour and minute seriatum in cooperation with. the sound records then in active position.

1l. 'Ihe combination of claim l0 in which the record carriers are cylinders.

12. Thecombination of claim 10 in which the record carriers are cylinders; the sound records are partially transparent photographic lms'; the reproducing means comprise sources of light and light-sensitive cells acting by reflected light; and

with a reflecting surface underlying each sound record.

13. Phonographic apparatus comprising, in combination: a nlm support; a reiiecting surface carried by said support; a partially transparent photographic nlm sound record on said support; a source o f light; a light-sensitive cell arranged tobe aiected by light from said source reflected from said surface through said film; and an electric circuit connected to have current therein modulated by said cell.

14. Phonographic announcing apparatus comprising, in combination: a revoluble record carrier; a plurality of sound records carried thereby spirally thereof and terminating at positions at an edge thereof; drive means to turn said carrier in a reproducing direction; drive means to turn said carrier to change the record to be reproduced; said drive means each permitting free revolution of said carrier in response to the other.

15. Phonographic announcing apparatus comprising, in combination: a revoluble record carrier; a. plurality of sound records carried thereby spirally thereof and terminating at equidistantly spaced positions at an edge thereof; drive means to revolve said carrier in a reproducing direction; drive means to turn said carrier step by step in record changing movement to bring successive records into reproducing position; each of said drive means permitting free movement of the carrier in response to the other.

16. Phonographic apparatus for use with lightsensitive cell reproducing means comprising, in combination: a cylinder having a groove in its surface; a reflecting surface in the bottom of said groove; a partially transparent photographic film sound record mounted in said groove and overlying said surface.

1.7. Phonographic time announcing mechanism comprising, in combination: atelephone; a plurality of sound records; a shifting motor geared to change said records; a main motor geared to drive said records; a motor geared to associate said telephone with said records; control switches for the respective motors; and a governing switch in series with each of said control switches, each actuated by one of the other motors to prevent conicting action of any two motors at the same time.

18. Phonographic time announcing mechanism comprising, in combination: time announcing means embodying a record carrier; a plurality of records on said carrier; record changing means; a motor geared to drive said announcing means for announcement movement of the record carrier; a motor geared to drive said record changing means to cause record'changing movement of the carrier; a time controlled switch to start the last named motor at definite intervals; a holding switch in the circuit of said second named motor controlled thereby to cause completion of the record changing action; a switch in series with the last named switch held open by operation of the rst named motor: said record changing gearing including an intermittent gear so as not to interfere with the action of the first named gearing when the record changinggear is partially operated.

19. Phonographic telephone answering mechanism comprising, in combination: a called telephone set; a cam to lift the receiver of said called telephone; a motor to drive said cam; a switch responsive to the action of a telephone ringer to start said motor; phonographic telephone answering means; a main motor to drive said last named means; a switch closed by operation of said telephone motor to start said main motor; a switch closed by said first named motor to cause completion of its receiver liiting action; a normally closed switch opened by operation of said main motor in series with said last named switch to prevent action of the first named motor while the main motor is running; and means to hold said rst named switch closed during operation of said main motor.

20. Phonographic. telephone answering mechanism comprising, in combination: a usual called telephone set; a receiver lifting cam; a motor to drive said cam; a switch closed in response to action of the telephone ringer to start said motor; film sound record telephone answering means comprising a source of light; a switch closed in response to action of a telephone ringer; means operated by said last named switch to energize the light source of the answering means; a main motor to drive said answering means; a switch closed by operation of said rst named motor to start'said main motor; a holding switch closed by said main motor to cause completion of its answering action and subsequently broken thereby to stop said main motor.

21. Phonographic telephone answering mechanism comprising, in combination: a usual* called telephone set; receiver lifting means; a motor to drive said means; a switch responsive to the action of the ringer of the telephone to start said motor; a switch closed by initial operation of said motor to cause the motor to complete its action and broken by said. action to stop said motor; phonographic telephone answering means; a main motor to drive said means; a switch closed by the first named motor to start said main motor; a holding switch movedby said Vmain motor to cause complete action thereof operating.

22. 'Iime announcing mechanism comprising,

in combination: a pair of record cylinders; minute and hour announcing sound records carried by the respective cylinders; each of said cylinders mounted to revolve upon a shaft; a member rigid with said shaft; means to drive said rigid member in sound reproducing direction comprising a member journalled upon said shaft having ratchet engagement with said rigid member; means to shift said cylinders in a direction to change the records comprising a gear journalled upon said shaft, an overrunning clutch between said gear and said rigid member, and means to move said gear at definite time intervals.

23. Time announcing mechanism comprising, in combination: a pair of parallel shafts; a pair of cylinders mounted on said shafts respectively; twelve sound records'for announcing the hours carried by one of said cylinders; sixty sound records carrying the minute announcement upon the other of said cylinders; a record shifting motor; a shaft driven thereby; a disk upon said shaft carrying a pin; an intermittent gear to be actuated by said pin once during each revolution thereof; a gear mounted upon each of said parallel shafts; a pinion carried by the hub of said intermittent gear in mesh with the'gear upon the minute shaft; an overrunning clutch to drive.

said minute shaft on said gear; a cam carried rack carried by said arm in mesh with the gear upon the hour shaft whereby to move said hour shaft to shift the hour records once during each full revolution of the minute record shifting gear; means to energize said motor once each minute to cause full revolution of said motor shaft at each energization of the motor; means to drive said cylinders in the record changing direction independently of the described record shifting movement; and a reproducing head driven by said cylinder drive actuated to coact with the records upon said cylinders seriatum to provide a continuous announcement of the hour and the minute.

24. 'I'he method of utilizing a photographic film record comprising recordings of varying opacity carried by a transparent lm which method comprises passing light through the records and lm; and causing the light to be reiectedagain through the film from a reflectingsurface behind the lm whereby to vary the intensity of the reflected light in accordance with the relative opacity of various portions of the record.

with variations of said reected light.

26. Phonographic apparatus for use with light sensitive cell reproducing means comprising, in combination: a record carrier having a reflecting surface; and a partially transparent photographic film sound record mounted on said carrier and overlying said surface.

27. Phonographic telephone answering apparatus comprising, in combination: a pair of record carriers; lm sound records mounted on said carriers; a reproducer head; a pair of exciter lamps carried by said head individual to said records; an exciter lamp switch; means to move said head out and return; telephone associating means; means actuated by said associating means to start said head moving means; means actuated by said telephone associating means tol close said exciter switch whereby to light one of said lamps during out movement of the head; and means actuated by moving `means to extinguish the lighted lamp and to light the remaining lamp for the return movement of the head.

28. Phonographic announcing apparatus comprising, in combination: a rigid, revoluble record carrier; a plurality of sound records carried by said carrier, extending spirally at least partially around the same and terminating at a'n edge thereof at equidistantly spaced points about its circumference; means to reproduce-sound from said records; 'and automatic means to intermittently move said carrier circumferentially the distance between said points for record change.

29. Phonographic announcing apparatus comprising, in combination: revolubly mounted cylindrical sound record-carrying means; a plurality of sound records mounted on said means; a reoiprocable sound reproducing head coacting with said records; means to cause reciprocation of said head comprising a revoluble drum having adoub1e spiral cam to cause out and return movement of said head; and means acting at the end of the out movement of the head to change the record coacting with. the head upon the return movement of the head.

30. Phonographic announcing apparatus comprising, in combination: a pair of record carriers; photographic sound records mounted thereon; drive means for said carriers: a `reproducing head; light sourcesl carried by said head for coaction with the respective records on said carriers to reproduce sound; means to cause out and return movements of said head; means to onergize one light source only during the out and the remaining light source only during the return movement of the head; and means'to cause both sources to be energized momentarily at the end of the out movement to avoid a break in the sound reproduction from the two records. i

31. Phonographic announcing apparatus comprising, in; combination: a revoluble carrier; a plurality of sound records carried thereby spiral- 1y thereof and terminating at positions at an edge thereof; drive means vto turn said carrier in' a reproducing direction; between said rst named means and the carrier `to turn said carrier to change the record to be reproduced; vsaid drive means each permitting turning movement of the carrier yin response to the other.

32. Phonographic announcing mechanism comprising, in combination: a plurality of record carrying cylinders mounted for revolution; a plurality of sound records carried by each of said cylinders in multiple screwthread arrangement thereon and terminating at equidistantly spaced points about the circumference thereof at ends of the cylinders; the length of the records and the pitch of the. screwthread arrangement thereof diiering' between the cylinders; a reproducing head mountednfor travel parallel with the axes of the cylinders; reproducing means carried byy said head for said respective cylinders; means to cause out and return movement of said head at speeds corresponding to the respective pitches of said screwthread arrangements; means to revolve said cylinders during sound reproduction; and means to cause respective of said reproducing means to be active during out and return movements.

JOHN L. FRANKLIN.

drive means interposed