Oct. 15, 1946. J_ J_.KAPLAN 2,409,358 AUTOMATIC j RECORDING APPARATUS Filed Sept. 12, 1942 13\% . NM L_ Jag» / W 2 Sheets-Sheét 1 Oct. 15, 1946. J. J. KAPLAN 2,409,358 AUTOMATIC RECORDING APPARATUS Filed Sept. 12, 1942 . 2 Sheets-Sheet 2 V %. IIVSUllf/M 100 jrzzgeni‘ar' m5 Patented 0a. 15, 1946 2,409,358 "UNITED STATES PATENT OFFICE 2,409,358 AUTOMATIC RECORDING APPARATUS .Jacob J. Kaplan, Boston,: Mass. Application'September 12, I942, ‘Serial No. 458116 15 Claims. 1 (01.’ 88-16) 2 This invention relates to an apparatus for au more, and-means such as‘ an electric motor; spring wound'motor, or the like "for winding up-the ex tomatically ‘recording visual‘conditions at a'pre determined ‘time, and is herein described ‘with posed ?lm. The shutter --is preferably operated by "elec particular reference'to its‘ use for recording the attendanceat a moving picture‘theater or other trical means such as'a solenoid, and the-opera tion of the shutter actuator is controlled by means which includes a clock mechanism designed to auditorium. Exhibitors of motion ‘pictures ‘are often 11 cense'd *by the 'distributor‘to'exhibit pictures "for effect the ' operation of’ the shutter actuator only a ‘rental based on'a percentage of'the gross re at predetermined‘intervals'during agiven period ceiptsg-andincrder to determine‘the amount of 10 and aphotoelectric' device which is responsive to such receipts the "distributor customarily ‘relies the intensity of the incident'light so ‘as automati upon-either a report‘ ma'de'by‘the ‘exhibitor un checked'by any ‘outside agency, or a report made cally'to‘ vary the exposure,. 1. e. either’the period of exposure or the ~diaphragm opening, during by ‘a representative 10f an‘agency independent of the recording ‘interval. the‘exhibitor, this representative being callecl'a “checker.” Each .of these methods is generally unsatisfactory, the .former being unfortunately subject to manipulation, and 'fals'i‘?catiomand' the lattergwhile less subject‘ to falsi?cation, is not photographic record of "the ' auditorium is desir able, it is to 'be understood that for the ‘purpose of recording the attendance it is merely neces whollyifree from this defect and is expensive in 'that'it'invo‘lves "a' substantial expenditure for vthe compensation ‘and ‘expenses of ‘the checker. The principal ‘object ‘of "the present‘invention sary'that‘ the ‘photograph be su?iciently distinct to produce relatively light spots representingLthe faces "of those‘present. is ' to ‘ provide an ‘ apparatus ‘for automatically re cording'visual conditions .such'as vthe attend Thus, 'a photographic record may *be‘auto-mati'cally made'at any desired time and with an‘exposure governed by ‘the in tensity‘of the incident light. Although ‘a clear ‘ ‘The operation'of 'the film winding mechanism 25 is vpreferably“controlled by the shutter‘actuator'so anc'e ' at van ‘auditorium at one ‘or ‘more ' predeter as "to operate after the closing ‘movement of the shutter-to wind up the exposed ?lm and there apparatus is ‘reliable ‘in ‘operation and ‘not ' sub upon ‘present'an unexposed part of the .?lm for ject totampering. the succeedingrecord. 'A'further object‘is“to.provi'de an apparatusof 30 If ‘desire'd‘the photographic record .may also the'a'bove type "inthe ‘form of a compact unit include such ‘supplementary "data as the time capable ‘of being readily .moved ‘from place .to (day and hour) whenthe photograph was taken, place and conveniently .set up ‘for ‘operation. along with the name of thetheater, speci?ed date mined times throughout a 'speci?e‘dperiod, which Further ‘objects relate “to various "features of of .exhibition, camera number, distributor,v etc. construction‘and .will‘be apparent .from a con 35 To‘this ‘end'theca'mera may beprovided with a sideration of " thesfollowing ‘description and the compartment .into which a portion vof the '?lm accompanying "drawings, wherein projects, this compartment having a data ':card andv time indicating details ‘operated by the clock ‘Fig. i11is"a.front"elevation “of ' an apparatus ‘con structed'in ‘accordance with'theipresent inven tion; mechanism. 40 Fig. 2 is aside elevation .withparts'broken away'and shown in ‘section; In order-‘to secure the desired il lumination' for recording the supplementary ‘data there is provided an electric lamp which is lighted momentarily only during the'interval whenthe Fig. '3 ‘is .a schematic ‘view of the operative shutter is open. ‘ I parts of‘the" apparatus ; and Although the different actuating mechanisms ‘Fig. 4 is ‘an enlarged "fragmentary .elevation 45 maybe operated byany suitable electric or me showingthearrangement of the time fdialsan'd' data card. , , Inaccordance with thepresent inventionthe recording apparatus comprises a camera equippedvwith a suitable lens and lengthlo'f?lm for taking one or more photographs ‘of an audi torium-under varying light intensities, a. shutter actuating mechanism capable of being operated so-astopro'duCe an'exposure'which may be varied froma fraction of‘a‘second to several seconds or ' chanical motors,'.the timing device, shutter‘ actu ator and associated parts are preferably elec trically operated, andialthough'the powersource may be they usual light circuit to whichthe appa ratus may be connected, the use of a battery carried in a. compartment constituting apart of the apparatus is preferred, so that the operation may be independent of any ‘outside agency, thus overcoming the possibility of tampering with accessible electric connections. The clock mech 2,409,358 4 3 anism may also be electrically operated, although which is normally held in retracted position by I prefer to use a spring wound clock and thus a tension spring 32. avoid a constant drain on the battery. pivotally connected with one arm of a lever 34 Where, as is preferred, the entire apparatus is a self-contained unit comprising sealed com which is pivoted at 35, and the other arm of the lever is pivotally connected at 36 to a depending One end of the plunger is partments for the battery, actuating mechanisms, actuator rod 38 (see also Fig. 1) engageable with etc., it may readily be carried from place to place the operating lever l2 of the shutter. The free end of this lever arm also carries a contact 40 which is connected to power supply line b and normally held spaced from its companion con tact which is connected in series with lamp I8 and to the other power line a. When the sole noid 35 is energized the plunger 3| is advanced and causes the shutter lever to be depressed, - thereby opening the shutter, and simultaneously and conveniently mounted in operative position with the timing mechanism set to effect opera tion of the camera at predetermined intervals during a speci?ed period. The camera may be ?lled with a suitable length of ?lm which, after a series of exposures, may be removed for de velopment and replaced by a new ?lm. Referring to the drawings the embodiment shown therein comprises a housing | provided with spaced horizontal partitions 2 and 3 which divide the interior into an upper recording com partment 5, a lower battery compartment 6 and an intermediate compartment 1. The front walls closing contacts 45 and 4|, thereby closing the circuit through the lamp l8. When the solenoid 30 is tie-energized the parts are restored to their normal positions by spring- 32, thus permitting the shutter to close and breaking the circuit through the lamp H3. The ?lm winding mechanism 24 comprises an electric motor 45 connected through suitable of the recording and intermediate compartments are formed with central openings to accommo date the lens of the camera and a photocell, here gearing to a small shaft 1&6 which in turn is con inafter more fully described. These compart ments may be provided with doors or the like by means of which access to their respective in teriors may be had. nected through suitable gearing to the project ing end of the ?lm~winding spindle |5, it being understood that the gear ratio is such that one revolution of the shaft 46 is sufficient to rotate spindle l5 so as to wind up the exposed ?lm and The recording compartment is substantially lightproof and has a built-in camera which may be of conventional design and construction, hav ing the usual lens ||, shutter and associated op erating lever II’ which controls the period of exposure of ?lm l4 which is mounted on rollers and is suitably shielded in the customary man ner. One of the ?lm-supporting rollers is mount ed on a ?lm-winding spingle l5 which, when rotated, winds up the ?lm so as to carry the exposed portion from the exposure chamber I6 and simultaneously present an unexposed por tion. The major portion of the ?lm |4 extends through the main exposure chamber 16 and a partition I‘! de?nes a sub-chamber through which only the lower marginal portion of the ?lm extends, as shown in Fig. 2. Mounted with in the sub-chamber is an elongate electric lamp I8, horizontally disposed in spaced parallel rela tion with the lower mar-gin of ?lm l4. Associ ated with the lamp I8 is a re?ector [9 which may be integral with partition l1, and a screen or ?lter 20 having optical characteristics suit~ able to produce the desired exposure on the ad jacent area of ?lm M. t is to be understood that the partition ll thoroughly shields the lamp l8 so that there is no leakage of light into the main exposure chamber. A generally L-shaped casing 2| is mounted on the front and top walls of housing | and within this casing a shutter-operating mechanism 22, associated lamp switch 23 and ?lm-winding mechanism 24 are suitably mounted. The oper 3 fl bring in position for exposure a succeeding area of the ?lm. The construction and arrangement of parts are such that the time interval required for one revolution of the shaft 46 is of the order of one-half minute, although a greater or lesser interval would be permissible, depending upon the period of operation of the associated timer 25 and the clock mechanism 21. The shaft 46 carries a disk 48 formed with a notch 49 and a cam 55 formed with a rise ele ment 5|. A lever 52, pivoted at 53, is formed with a pawl-like end which is normally held in notch 49 by a small tension spring 54, thus pro viding in effect pawl and ratchet elements oper ative normally to hold the disk and associated 5 parts locked against rotation. The lever arm also carries a contact 55 which is connected to supply line a through the motor 45 and normally held spaced from its companion contact 56 which is connected by line 0 to terminal B. The op 50 posite arm of lever 52 is operatively associated with a pull bar 58 which is pivotally connected at 59 with the plunger 3|. The pull bar 58 is formed with a ratchet-like tooth 58 engageable with the adjacent end of lever 52 and is normally = held in operative position by a small tension spring 6|. One end of a follower 62, slidably mounted in guideways 63, is arranged so as nor mally to engage the dwell surface of cam 50 and its other end is engageable with the interme 60 diate portion of the pull bar 58. The construc tion and arrangement of parts are such that when the solenoid 38 is energized the plunger 3| and pull bar 58 are advanced so that the tooth 6|) rides over and beyond the end of lever 52, the ation of these mechanisms is under the conjoint control of a timing mechanism 25, photoelectric device 26 and clock mechanism 21, all of which are mounted in the intermediate compartment 65 spring 6| being operative to hold the pull bar in engagement with the end of lever 52; and when 1, as indicated in Fig. 2. The electrically oper the solenoid is de-energized the plunger 3| and ated elements of these mechanisms are connected pull bar 58 are retracted by spring 32, thereby to power supply lines a, b which lead to the bat causing the tooth 6|] to pull the adjacent arm of tery compartment 6 and in which is mounted lever 52‘ downwardly and raise the opposite arm either a storage battery or a plurality of dry cells. Referring to Fig. 3 which schematically illus trates the aforementioned mechanisms, the shut ter actuator 22 comprises a solenoid 30 asso ciated with an elongate armature or plunger 3| upwardly, thus disengaging its pawl-like end from notch 49 and simultaneously closing the circuit through motor 45 and contacts 55, 56, whereupon the motor 45 operates to rotate shaft 75 46 in a counterclockwise direction. As the shaft 5 wan-1d associated]partslrotate, "the‘~ri-sel’5~l ‘cream 50 Lthrows'the follower§62~1outward1y Iagainst ‘pull rotation"'of-theidiskb and-11a ‘?xed ‘setting » of "the plunger and associated contact ("84 ‘the circuit through the shutter actuating solenoid 580 ‘may bar158~s1i?iciently to1e'ffect’disengagement of ‘the tooth ~80 from ‘the *end (‘of "lever 1'52, ~‘whereup‘on be» ‘closed 'Yfor-a, i de?nite ‘interval. lever g"52 "drops downwardly vIand'ri'des ‘on the 1pc ‘When‘the'sol'enoid H‘is energized the *plunger riphery o'fi‘disk' 48,1in which‘ position‘itheilever =52 is effective ito lmaintain contacts »?55, F56 closed. 7 6 -‘ isr-‘pull-eddnwardly, 5 thus ‘swinging ‘the ‘free ‘end of "the ‘lever 966 outwardly ‘to disengage ‘its end from notch ‘65 ‘and simultaneously to close con tacts 118,1‘! l?therebyi‘starting motor 84 which ro I The shaft1 46 “continues-its: rotation» until‘ the notch 49 lisabout-i‘to ~ complete one revolution at'iwhich time'l't‘h'ellen'd of lever1arm-52‘ drops-into the notch 49, thus *breaking Lthe circuit through contacts H) tat‘esthe‘ ‘disk ‘D 'fin ' a,‘ ‘counterclockwise > ‘direction. As'the'disk D rotates the-Ycontacts169f15 'disen- - 55,1 56 -''to "1 shut. off the - motor, “and Tfurther’reVoIu tion of the. disk~48 is arrestedibyrthe engagement of the! end1 of’ lever arml'with‘the ‘wall of~.notch-~'49, thus terminating the -'?lm'-winding cycle. "Theperiodlduring which ‘the (‘solenoid 30 is energized end Phence ‘the ‘:‘period of exposure ‘is controlled 1'by the timing ime'chanism v7.5 and" the associated photoelectric device #28. “The "timing mechanism comprises a rotatable - disk '1): 6f ' in su-lating Lmaterial ‘which carries @a ‘contact ele ment; 891cm lits periphery and :a segment-shaped contact? plate 86 on fon-elfa'c'e. An: electric motor 64 iseonnected through suitableigearing soiasit'o rotate-‘the: diskD in: a counterclockwise direction, theidesign of the: gearinglbeingsuch' that it re quiresiati least one minuteiforth'e disk-Dito' make 20 one - complete 5 revolution. ‘The :periphery i of the disk 'D?isiformed with-a notch f651which1receives thetpawl-likes end of alever': 66 . pivotallyl mounted _ at £81. 4A 1 small :tensi'on fispring L88 ractin'g Jon the opposite‘ endioffthel lever "normally :h'olds‘ itstipawl like: endainilockin'g engagement with‘ the notcht? 5, thus ‘providing ‘in effect .pawl and iratchet ele ments ?ada‘p‘ted lito voperate .in 1a lman'ner vsimilar tolthe :Icorresponding telements .- of "the :?lm wind ing mechanism. .The lever :arm'166 .ialso :carries a iicontact ‘110 which is fconnected :to :line a gage thus tbreakirig'the circuit through‘solenoid l4jbut~as the end-of lever ‘66 rides on theperijnh ery~of disk *D'contacts 10, ‘H are maintained closed, ithus effecting continued rotation of :the disk until'on'e complete‘revolution‘has' been made at which'timethe end of 'the‘leverarm»"66='drops into the notch 65 to break the oirouitithrough contactsl?, ‘H and motor 64 ‘and arrest further rotation *of‘dis‘k‘D. During rotation of ‘the v"disk D‘ the brush “contact 184 engages “the'plate vcon tact ‘86, thereby "establishing ‘a closed "circuit through ' the "shutter actuating "solenoid 5/30 ‘for an "interval'the duration of which 5is dependent upon vthe ‘setting-‘of ‘the'plunger l. The‘ position ‘of theplunger ‘8| Iis controllediby the photoelectric device 26 which "comprises *a conventional ' electronic ‘control circuit including the solenoid 80, aiphotocell‘88 "and, if-desired, ampli?er'tubes‘mot shown). 'The'photocell 88 is‘pperatively‘positioned with respect‘ to thev open infg'f89 (Fig. 1") ‘in vthe-front ‘wall of compartment 1 Tan'd is "connected in ‘the electronic ~Circuit‘to-re spond to "changes in intensity ‘of ‘incident ‘light so ‘as ‘correspondingly to ‘vary the "impedance of the 'solenoidcircuit. Inasmuch \as' the design of such ‘an clectronlc'control "circuit'is "well known to those skilled in-‘thev art ‘further explanation is through'ithe motor 84 and Inorm'ally‘held spaced unnecessary. from ‘Sits-‘companion contact ‘H “which is con 40 When the incidentlight is of maximum in nected ‘by line "0 *with 'i-terminal ‘B. A ‘solenoid tensity (i.‘e.,“full illumination of the‘ auditorium), "His-‘connected ‘with line- a- and: with ia?xe'dv con thedmp'edance of‘the ‘control circuit is- minimum tact ftiengageableiWith ‘contact :89. A plunger and theplun‘gerBI‘is heldin its innermost‘posi 18 associated with solenoid 'IT4 has-a pin ‘and. slot connection'l‘? with the 'leVer'TBB, the spring 68 being 1- e‘ffective normally to. hold "the plunger in retractedflp‘osition. 'Mounted?above'the disk D is a ‘contact-ad justing "device comprising va solenoid 801a‘nd'as sociated ‘plunger 481 vmounted ‘for movement ‘in ~ ailine'parallel toithe'plane of theisuriace of disk D and approximately radially ' thereof. The end of plunger 8| carries a brush "contact ‘84 en tion, "whereas. at minimumiintensity (i. "e., ‘when theauditorium is as 'darkiasit usually‘becomes ‘during the ‘. normal operation, “as "distinguished from‘ acomp'lete blackout) vthe impedance is ‘maxi mum 'an’d’the plunger ‘8| ‘is ‘held in'its outermost position. .‘Since‘the"photoelectric device‘26 is'at all Itimes ~connected 'to" power ‘lines ‘a’ and *b, the control ‘circuitmemains "operative as long as "the supply‘lines‘areconnected to the battery and hence‘ the timing-mechanism 25 and shutter "actu ating mechanism 22 are always subject to'ithe tact ‘84 is connected-in ‘series with ‘solenoid 530 > ; control of‘ photocell 88. and linen, ‘ whereas ‘the contact plate ‘~86 ‘has ‘a The clock mechanism 21 ‘which-has primary common 'connection' with "contact ‘69 ‘ at'85 ‘which control "over all the'above-‘describe’d mechanisms in 'turn 'is ‘connected “with "line b. ‘The 'con comprises a conventional spring wound -‘clock struction and arrangement of parts are such (preferably of'the ten or ?fteen day .ttypc) and that with ‘the lever ‘66 in locking'position 'con- < itsminute-han'd arbor 98 (rotating at ‘Ya*rate~"of tacts’89 and ‘15 are in engagement, 'but'conta'cts one "revolution‘per hour) carries '-a disk 8|, its 84 "and 86 ‘remain out of ‘engagement'until'mo hour'hand ‘arbor-92 ‘(rotating at their-ate of one tor"8‘4‘has”come ‘up"to :speed’so-‘as'to rotate'disk revolution 'per twenty-four hours) carriesv'a'disk D ‘at 'a substantially "uniform ‘rate. "Ilhe ar 93 and‘also'a dial ‘94 marked ‘off into'tWenty-four rangement ‘of the *contact-adjusting "device ‘is segments-numbered from I‘to mW/as-shown'in suchlthat ‘the‘brus'h 'contact 84 ‘moves radially Fig. 4. ‘An ‘arbor 95 is suitablygeared ‘to ‘the of “the disk ‘D ‘so 'as“to engage "the vvcontact plate arbor ‘92 so'as to make one 'complete'revolution 86 “along a circumferential‘line which'varies‘in every‘thirty'days and ‘this arbor‘carries a disk accordance‘with the‘ra'dial setting of the’plung 98 and-a dial "9‘! ‘which is marked on‘ intovthirty er, . ‘and lime ' design * of ‘the vsolenoid ‘and ' plunger 70 segments numbered from 1| to 38. (Fig. 4). The is "such that the‘position of the latter ‘corresponds upper partslo‘f the‘dials '94, 91 extend throughian with ‘the current ?owing through the solenoid. opening at the rear end of partition .2 into'the Hence,lby‘varying‘theiimpedance of the solenoid sub-chamber in close juxtaposition :to the t?lm circuitfthe .position of the “plunger may be ad M, 'as shown in Fig. 2. In this position theup justed correspondingly and‘lfor agivenspeedof 75 permost ' ‘numerals of the dials 1194 J and Q‘! are "in gageable wwith'the-contact :plate 86. The con 2,409,358 S direct line of light passing through the screen 20 the exhibition is to be repeated every three hours, the last show commencing at 9:00 p. m. Under these conditions the distributor of the motion pic ture play would arrange contacts |0I in disk 96 rendered opaque except for rectangular openings shown by the dotted lines 98 and 99 of Fig. 4, Cl to correspond with the dates 1, 2 and 3 on dial 91, removing all other contacts; contacts |0I in these openings being coextensive with the num disk 93 would be arranged to correspond with the bered sections of the dials so as to con?ne the hours from XII to XXII on dial 94, and all other exposure of the ?lm to that of the area of the contacts would be removed; and contacts |0I openings 98 and 99. If desired, the screen 20 may be provided with a pointer p and lettering 10 would be arranged in disk 9| so as to close the circuit for a period not exceeding one minute indicating that the dial 94 shows the time of the once during every hour commencing at about 1:00 day (exact hour and approximate minutes) and p. m. and continuing through 10:00 p. m. Acthe dial 91 shows the day when the exposure cordingly, on the ?rst, second and third days of was made. In addition to these data the screen the month between the hours of 12:00 noon and 20 may be provided with a translucent area to 11:00 p, m. the apparatus is set up to make photo receive a replaceable data card I00 formed of graphic records of the attendance once each hour. transparent material with opaque lettering, as In addition the data card I00 would be ?lled in shown in Fig. 4. appropriately and inserted in place. Each of the disks of the clock may be formed With the camera loaded with ?lm, the contacts with a plurality of recesses or the like capable of 20 arranged as above described and the clock mech receiving removable contacts I0| which may be anism 21 wound up, the apparatus is then ready adjusted in a manner hereinafter explained. for installation in the auditorium of the theater, The contacts |0| carried by the disk are con it being understood that the aforementioned ad nected to a ring or the like conductor I02 and justments and the installation may be made sev for each disk there is provided a leaf spring con eral days prior to the date of the ?rst exhibition tact I04 engageable with the contacts IN. The since the clock mechanism is effective to main~ arrangement of the contacts IOI on disk 9| is tain an open circuit until the speci?ed time is at preferably such that in the course of normal ro hand. At about 1:00 p. m. on the ?rst day the tation of disk 9| the contacts IOI and I04 are contacts WI and I04 of disks 9|, 93 and 9B estab in engagement for a period of one minute or less, lish a closed circuit through solenoid |I0 which although if desired contacts |0| may be so ar acts to close supply lines a, b for a period of one ranged asto engage contact I04 at any desired minute. Upon closing the switch N2 the circuit interval or intervals of predetermined duration. and in order to produce an indisputable record the screen 20 may be masked off or otherwise through solenoid ‘I4 is established whereupon lever 66 operates to close the circuit through mo tor 64 which rotates the timing disk D. Simul taneously the circuit through photocell 88 is es during one revolution; and likewise with the con tablished and the solenoid 80 acts to position the tacts |0| of disk 96 which may be arranged to contact 84 in accordance with the intensity of engage contact I04 throughout certain speci?ed 40 light on the photocell. As the timing device ro days. tates contacts 69 and 15 are broken, but the cir The conductor I02 of disk 96 is connected to cuit through motor 64 is maintained and when terminal B and its spring contact I04 is connected the motor is up to speed the contact plate 85 to conductor I02 of disk 93 and contact I04 of is brought into engagement with contact 84 to the latter is likewise connected to conductor I02 establish a closed circuit through solenoid 30. of disk 9|. Contact I04 of disk 9| is connected The solenoid 30 not only actuates the shutter through a solenoid IIO with supply line a, thus lever I2 and closes the circuit through lamp I8 connecting all contacts in series with solenoid but also positions pull bar 58 to operate lever 52. H0. The solenoid H0 is associated with an ar Continuous rotation of the timing disk D breaks mature or plunger III which is operatively con contacts 86 and 84, thus deenergizing solenoid 30 nected with a normally open switch “2 out into whereupon spring 32 retracts plunger 3|, thus power line b on one side of terminal B. The breaking the circuit through lamp I8, releasing terminals A and B are directly connected with the shutter lever I2 and closing the circuit the battery (not shown) located in compart through motor 45, By this time a photograph has ment 6. With the construction and arrangement above . been taken at the proper exposure and as the cir cuit through motor 45 is now established, the disk described the solenoid |I0 may be energized to 48 and cam 50 rotate and the exposed portion of, close switch NZ only when contacts IOI and I04 the ?lm I4 is wound up and an unexposed por of each of the disks 9|, 93 and 98 are closed and tion presented for the next exposure. Rotation the timing mechanism 25, shutter actuating is continued until one revolution has been com mechanism 22, ?lm-winding mechanism 24 and pleted after which the disk 48 is locked by lever 52. photoelectric device 2'6 can only operate when the The cycles thus described take place in the in~ switch I|2 closes line b. By properly arranging terval during which the switch I I2 remains closed, the romavble contacts IBI of each of the disks but if it should happen that the switch II2 open 9|, 93 and 96, the circuit through solenoid |I0 Similarly with disk 93 except that the contacts are preferably arranged to engage the spring contact I04 throughout a predetermined period can be closed for one or more predetermined periods during one or more selected hours throughout one or more selected days during the month and hence any desired number of photo '" up prior to the expiration of the time necessary for the timing disk D and control disk 48 to com plete one revolution, the motors 45 and 64 will nevertheless continue to operate since they are not under the direct control of switch H2, and graphic records may be automatically made at any time during a speci?ed period, as explained 70 hence the parts are automatically restored to nor mal position notwithstanding a shortened timing in the following summary of operation. interval. Let it be assumed, for example, that a record When the disk 9| breaks the contacts IOI, I04 of attendance at a theater is to be made on the switch II2 opens lines a, b, and these lines re first, second and third days of a certain month; that the theater opens at twelve noon; and that 75 main open until contacts IOI, I04 of disk 9| again 2,499,358 closexthecircuit throughzsolenoidi H0 which, as above pointed out,_occurs once eachhour, where ‘uponv the, operating‘ cycle: is repeated throughout shutter, photoelectric means; controllingthe rel ative position of'saidcontacts so asito-vary, the period of 'energization of’ said'solenoid and there' each of. the. selected periodsduring each of: the by_ vary'the duration of exposure in" accordance speci?ed'days. Eachoperating/cycle‘produces an U! with the intensity of ‘incident. light, power supply exposure which, when developed, provides a rec ord1of attendance, supplemented‘ by'the data; ap lines connected with said solenoidand contacts, a control switch for saidjpower supply lines; ai-clock pearing, Orr card mo and. dials 94i arr-dial‘. The mechanism for: operating? said switch‘ at: prede record thus produced provides indisputable: proof termined' times, and film winding~ mechanism:.op of the month, day and‘hourwhen'the photograph 10 erative only after closing movement of saidshut was'maderand by counting-the: attendance shown ter‘ for-winding up theexposed. ?lm» by thexphotograph anlaccuratel record isobtainedl 4. Recording apparatus; comprising a camera If; it-be desired. to take; check recordschourly; having‘ a shutter for controlling 'the'period of‘ex rather'than a single record, the contacts; Hit? of: posure, actuating means including a solenoid'for disk 9| may be set accordingly,‘ or'thei contacts 15 opening "and'c'lo'sin'g said shutter, the‘ shutter. vbe IIH may besuchlasto hold the circuit‘ through ingrclosedf so long‘ as; the solenoid: remains d‘een solenoid’ I I0’ closedfor a period? of: two minutes, ergizedand being openrso long as the‘ solenoid is in which case the-circuit‘ through solenoid“; is energized, timing mechanism including relatively re-established at the end" of the ?rst operating movable contacts electrically: connected: with said cycle and thus effective to' caus'era- repeat cycle. solenoid for controlling the operation of: said By properly arranging the contacts Iii-l of disks shutter, power supply- lines'connected with said 911, 93::and 95', any numberxofrecordsrm'ay be made: solenoid‘ and’ contacts, photoelectric meanscone throughout any speci?ed‘ period‘; nected to. said power supply'lin-es- and with said.v While I’have shown anddescribed one desirable timingmechanism for adiustingzsaid contacts so embodiment of." the» invention it is to‘ be under I j as to vary the period of energizati'oni-of' saidrsole stood, that this? disclosure" is‘ for. the purpose of noid'z' and‘ thereby‘ vary: the: duration‘ of’ shutter illustrations and: that various? changes in: design opening in' accordance with the intensity-0f inci and ,arrangementlrof; parts, as: well' as the substitu dent" light, acontrol switch for-said powerssupplyr tion or. equivalent eliementsforthose. hereinzshown lines, a'clock'mechanism for operatingsai‘di'switch and described, may be? made‘ Without departing. from;thespirit and scopeoithelinvention as set forthin the appended claims; IIclaimr 1'. Recording apparatus comprising a1 camera‘ having a shutter for controlling the period of exposure, actuating‘ means‘including- a solenoid for opening» and’ closing said shutter, theshutter beingclosed so long as; the solenoid remains de energized and being open so long' as the-solenoid! is'energized, timing-mechanism including rela-» tively/ movable contacts electrically connected‘ with said solenoid for controlling-the‘operation of‘ said shutter, photoelectric meanscontrolling the at predeterminedr'times; and‘ ?lm winding'mec'haé nism operative only after‘ closing‘ movement‘of said shutter for winding'up the exposed film.’ 5.v Recording apparatus'comprising: a housing having ‘ partitions de?ning ‘a: recordingv compart-'1 ‘ ment, a~battery compartment and-an interme diate compartment having an’ opening; a camera‘ built‘ into‘ said recording compartment, said'cam eraliaving a shutter for controlling the period‘cf exposure, shutter actuating means mountedl'on said housing adjacent tosaidi'shut'ter, saidshut ter' actuating" means including: a. solenoid; the shutter bein'gfclosed so' longias thevsolenoidire mains‘ deenergi'zed' andv being‘ open-so ‘long asi'the relative position of said contacts so as togvarythe solenoidiis energized; timing-f mechanism locatedT period of energization ofrsaidsolenoi-d andthereby,‘v 45 insaid intermediate. compartment, said timing vary the duration of exposure in'accordance with mechanism including ‘ adj usta'b'leg. relatively -m'ov-‘ the-intensity of incident light, power supply lines able contacts electrically‘ connected with‘ said‘, connected with said solenoidiandcontacts; a con; solenoid.‘ and e?’ective to‘ - control? the ’ energization of: th'e=so1'en0id; powersupply lines leading-from‘ clock mechanism ‘for operatingsaidfswit‘ch atlpre 50 said; battery compartment and connected: with‘ determined times‘ during a speci?ed-period. said soienoid‘and" contacts; photoelectric‘means: 2. Recording apparatus comprising" a; camera‘ located in said‘ intermediate compartment ins having‘a'v shutter for‘controlling'the period of ex‘, light-receiving position with‘ respect tothe open-“ posure, actuating means including asolenoid for ingv therein; said‘photoelect'ric means beingv con opening and closingr‘said shutter, the: shutterrbe nected with saidpower. supply lin'esand" with: said i'ng ‘closed so longiasitheisolenoid; remains1deener.timing mechanism and’ beingoperativa to- adjust gizedian'd' being op'enis'o' long the‘, the solenoid‘ is said: contacts so" as to? vary the period of energi-~ energizedpower supply. lines connected with said zation of saidisolenoidian'di-thereby: effect- a Varia-' solenoid; photoelectric means‘. connected: to; said, tion'in’ the durationiof shutter openingrin accord’ power supply, lines and operativeto: control the 60 ance with’ the intensitycofincident" light, andZ-a duration of fthe-period of energization ofa'said sole‘ clock mechanism and‘v associated power‘ control noid.‘ so as to" vary‘ the exposure in: accordance switch‘located 'in' said intermediate compartment, with the: intensity of incident. light; a: control said control switch" being, connected with said’ switch, for-said, power supplylineaandi aiclock‘ ' power‘ supply lines and actuated bysaid clock mechanism: for operating said switch at? prede 05 mechanism soas to"c10se"theicircuit;through-said termined: times vduring. a. speci?edz period. solenoid at a predeterminedtime; 3. Recording: apparatus comprising at camera 6-. Recording apparatus comprising a’ housing having a; shutter'for. controlling the period of eX—1 having partitions de?ning a recording compart~ posure, actuating means including: aisolenoid for, merit; a battery‘ compartment'and an interme opening and closing said shutter, thecshutt'er. be diate'compartment, acamera built into said rec-: ing 'closedl'soilongas the solenoid? remains 'deener owing-compartment, said camera having’ a- shut»troll switch" for said power ‘ supply' lines; and a1 gized: and being opensolong as the solenoideis energized; timing. mechanism. includingrelatively movable; contacts electrically; connected with :said. solenoidi for controlling: the‘: operation; of said‘; ter for'controlling-the period of exposure, shutter actuatingfmeans ,m-ounted ' on said housing adJa cent toz-said shutter; ,saidshutter actuating means including, a solenoid; the: shutter being closed so 2,409,358 12 11 long as the solenoid remains deenergized and be ing open so long as the solenoid is energized, tim ing mechanism located in said intermediate com partment, said timing mechanism including rel atively movable contacts electrically connected for opening and closing said shutter, the shutter being closed so long as the solenoid remains de energized and being open so long as the solenoid is energized, an electric switch connected with said lamp and operated by said actuating means with said solenoid and photoelectric means for controlling the position of said contacts in ac cordance with the intensity of incident light so as to control the energization of the solenoid and to turn said lamp on and off in response to open predetermined time. for opening and closing said shutter, the shutter ing and closing movement of said shutter, data displaying means in said secondary chamber so positioned with respect to the ?lm therein as to be photographically recorded when said lamp is thereby the duration of opening of said shutter, turned on, and clock mechanism associated with power supply lines leading from said battery com said actuating means for effecting the operation partment and connected with said solenoid and of said actuating means to energize said solenoid contacts, ?lm winding mechanism mounted on and operate said switch at predetermined times said housing and including a motor, a motor during a speci?ed period. switch connected to said power supply lines, con 9. Recording apparatus comprising a camera nections between said motor switch and shutter having a main chamber provided with a lens and actuating mechanism effective to close said switch associated shutter for controlling the period of after closing movement of said shutter so as to exposure, a secondary chamber juxtaposed to wind up the exposed ?lm, and a cluock mechanism and associated power control switch located in 20 said main chamber and having an electric lamp therein, a single photographic ?lm having its said intermediate compartment, said control major portion within said main chamber and a switch being connected with said power supply minor portion extending into said secondary lines and actuated by said clock mechanism so chamber, actuating means including a solenoid as to close the circuit through said solenoid at a i 7. Recording apparatus comprising a housing having partitions de?ning a recording compart being closed so long as the solenoid remains de energized and being open so long as the solenoid is energized, an electric switch connected with ment, a battery compartment and an intermediate said lamp and operated by said actuating means compartment having an opening, a camera built into said recording compartment, said camera 30 to turn said lamp on and on‘ in response to open ing and closing movement of said shutter, data having a shutter for controlling the period of ex displaying means in said secondary chamber so posure, shutter actuating means mounted on said positioned with respect to the ?lm therein as to housing adjacent to said shutter, said shutter be photographically recorded when said lamp is actuating means including a solenoid, the shutter turned on, clock means associated with said ac being closed so long as the solenoid remains de tuating means for effecting the operation of said energized and being open so long as the solenoid actuating means to energize said solenoid and is energized, timing mechanism located in said in termediate compartment, said timing mechanism including adjustable, relatively movable contacts operate said switch at predetermined times, and photoelectric means associated with said actuat electrically connected with said solenoid and 40 ing means so as to vary the period of energiza tion of said solenoid and thereby vary the dura effective to control the energization of the sole tion of shutter opening in accordance with the noid and thereby the duration of opening of said intensity of incident light. shutter, power supply lines leading from said 10. Recording apparatus comprising a camera battery compartment and connected with said solenoid and contacts, photoelectric means "" having a main chamber provided with a lens and associated shutter for controlling the period of located in said intermediate compartment in op exposure, a secondary chamber juxtaposed to said erative position with respect to the opening there main chamber and having an electric lamp there in, said photoelectric means being connected with in, a single photographic ?lm having its major said power supply lines and with said timing mechanism and being operative to adjust said 50 portion within said main chamber and a minor contacts so as to vary the period of energization of said solenoid and thereby effect a variation in the duration of shutter opening in accordance with the intensity of incident light, ?lm winding mechanism mounted on said housing and includ ing a motor, a motor switch connected to said power supply lines, connections between said switch and shutter actuating mechanism eil'ec tive to close said switch after closing movement of portion extending into said secondary chamber, actuating means including a solenoid for open ing and closing said shutter, the shutter being closed so long as the solenoid remains deener gized and being open so long as the solenoid is energized, an electric switch connected with said lamp and operated by said actuating means to turn said lamp on and off in response to open and closing movement of said shutter, data-dis said shutter so as to wind up the exposed ?lm, 60 playing means in said secondary chamber so posi tioned with respect to the ?lm therein as to be and a clock mechanism and associated power con trol switch located in said intermediate compart ment, said control switch being connected with said power supply lines and actuated by said clock mechanism so as to close the circuit through said solenoid at a predetermined time. 8. Recording apparatus comprising a camera having a main chamber provided with a lens and photographically recorded when said lamp is turned on, clock mechanism associated with said actuating means for effecting the operation of said actuating means to energize said solenoid and associated shutter for controlling the period of operate said switch at predetermined times, and ?lm winding mechanism operative only after closing movement of said shutter for winding up the exposed ?lm. exposure, a secondary chamber juxtaposed to said main chamber and having an electric lamp 11. Recording apparatus comprising a camera having a main chamber provided with a lens and therein, a single photographic ?lm. having its major portion within said main chamber and a associated shutter for controlling the period of exposure, a secondary chamber juxtaposed to said main chamber and having an electric lamp there minor portion extending into said secondary chamber, actuating means including a solenoid 75 in, a single photographic ?lm having its major 2,409,358 13 14 portion within said main chamber and a minor, tioned with respect to the ?lm therein as to be portion extending into said secondary chamber, photographically recorded when said lamp is actuating means including a solenoid for opening turned on, and photoelectric means connected with said power supply lines and timing mecha and closing said shutter, the shutter being closed nism, said photoelectric means being operative to so long as the solenoid remains deenergized and being open so long as the solenoid is energized, an electric switch connected with said lamp and adjust said contacts so as to vary the period of energization of said solenoid and thereby effect a variation in the duration of shutter opening in accordance with the intensity of incident light. operated by said actuating means to turn said lamp on and off in response to opening and clos 14. Recording apparatus comprising a camera ing movement of said shutter, data-displaying 10 having a main chamber provided with a lens and means in said secondary chamber so positioned associated shutter for controlling the period of with respect to the ?lm therein as to be photo exposure, a secondary chamber juxtaposed to said graphically recorded when said lamp is turned main chamber and having an electric lamp there on, clock mechanism associated with said actuat ing means for effecting the operation of said ac 15 in, a single photographic ?lm having its major portion within said main chamber and a minor tuating means to energize said solenoid and oper - portion extending into said secondary chamber, ate said switch at predetermined times, photo actuating means including a solenoid for open electric means associated with said actuating ing and closing said shutter, the shutter being means so as to vary the period of energization of said solenoid and thereby vary the duration of 20 closed so long as the solenoid remains deener gized and being open so long as the solenoid is shutter opening in accordance with the intensity ' energized, timing mechanism including relatively of incident light, and ?lm winding mechanism movable contacts electrically connected with said operative only after closing movement of said solenoid for controlling the energization of said shutter for winding up the exposed ?lm. solenoid, power supply lines connected with said 12. Recording apparatus comprising a camera contacts and solenoid, a light switch connecting having a main chamber provided with a lens and said lamp and power supply lines, connections be associated shutter for controlling the period of exposure, a secondary chamber juxtaposed to said main chamber and having an electric lamp tween said light switch and actuating means op erativeto turn said lamp on and o? in response to therein, a single photographic ?lm having its . opening and closing movement of said shutter, data-displaying means in said secondary cham major portion within said main chamber and a minor portion extending into said secondary chamber, actuating means including a solenoid ber so positioned with respect to the ?lm therein as to be photographically recorded when said lamp is turned on, a control switch for said power for opening and closing said shutter, the shutter being closed so long as the solenoid remains de 35 supply lines, clock mechanism for operating said control switch at predetermined times, and ?lm energized and being open so long as the solenoid winding mechanism operative only after closing is energized, timing mechanism including rela movement of said shutter for winding up the tively movable contacts electrically connected exposed ?lm. with said solenoid for controlling the energiza 15. Recording apparatus comprising a camera tion of said solenoid, power supply lines con— 40 having a main chamber provided with a lens and nected with said contacts and solenoid, a light associated shutter for controlling the period of switch connecting said lamp and power supply exposure, a secondary chamber juxtaposed to said lines, connections between said light switch and main chamber and having an electric lamp there actuating means operative to turn said lamp on in, a single photographic ?lm having its major and off in response to opening and closing move portion within asid main chamber and a minor ment of said shutter, data-displaying means in portion extending into said secondary chamber, said secondary chamber so positioned with re actuating means including a solenoid for open spect to the ?lm therein as to be photographically ing and closing said shutter, the shutter being recorded when said lamp is turned on, a control switch for said power supply lines, and clock ' mechanism for operating said control switch at predetermined times. 13. Recording apparatus comprising a camera having a main chamber provided with a lens and associated shutter for controlling the period of exposure, a secondary chamber juxtaposed to said main chamber and having an electric lamp there in, a single photographic ?lm having its major portion within said main chamber and a minor portion extending into said secondary chamber, closed so long as the solenoid remains deenergized and being open so long as the solenoid is ener gized, timing mechanism including adjustable, relatively movable contacts electrically connected with said solenoid for controlling the energiza tion of asid solenoid, power supply lines connected with said contacts and solenoid, a switch asso ciated with said actuating means and connecting said lamp and power lines so that said lamp is turned on and oil in response to opening and closing movements of said shutter, data-display and closing said shutter, the shutter being closed ing means in said secondary chamber so posi tioned with respect to the ?lm therein as to be so long as the solenoid remains deenergized and being open so long as the solenoid is energized, turned on, photoelectric means connected with actuating means including a solenoid for opening timing mechanism including adjustable and rel atively movable contacts electrically connected with said solenoid for controlling the energization of said solenoid, power supply lines connected with said contacts and solenoid, a switch asso ciated with said actuating means and connect~ photographically recorded when said lamp is said power supply lines and timing mechanism, said photoelectric means being operative to adjust said contacts so as to vary the period of energiza tion of said solenoid and thereby effect a variation in the duration of shutter opening in accordance ing said lamp and power lines so that said lamp is turned on and off in response to opening and with the intensity of incident light, and ?lm wind ing mechanism operative only after closing move ment of said shutter for winding up the exposed closing movements of said shutter, data-display ?lm. ing means in said secondary chamber so posi JACOB J. KAPLAN.