Sept. 17, 1946. v. E. F’RATT v2,407,!»92 CAMERA ‘ Original Filed Jan. 3, 1942 85 Fla.‘ 4 . 4 ‘Sheets-Sheet 1 a FIG-.3 Ilt'INVENTOR VEHNEURE Pmrr .87. ATTORNEYS Sept. 17, 1946. v, E, FEAT-f ‘ , 2,407,902 CAMERA Original Filed Jan. 3, 1942 4 Sheets-Sheet 2 _ INVENTOR YERNEUH E. Pmr'r I ATTORNEYS‘ Sept. 17,1946. ' “E, PRATT Q’ CAMERA _ 2,407,902 ' ' OriginaFFiled Jan. 5, 1942 F16.15 ' 4 Sheets-Sheet 3 I70 . INVENTOR VERNEUR E. P/mrz 115% +814, ATTORNEYS ' Sept. 17, 19.46. V, E,_ PRATT _ I 2,407,902 CAMERA Original Filed 3, 1942 4 Sheets-Sheet 4 INVENTOR ' ATTORNEYS Patented Sept. 17, 1946 I UNITED STATES PATENT OFFICE r 2,407,902 CAMERA Verneur E. Pratt, Norwalk, Conn, assignor to l ' crostat Corporation, a corporation of Delaware Original application January 3, 1942, Serial No. 425,528. Divided and this application July 1, 1943, Serial No. 493,034 3 Claims. (01. 88-—28) The present invention pertains to improve- _ Figiire 19 is an enlarged detail rear View of the ments in photographic and reproducing apparatug“ An object of the invention is to provide im- indexmg clutch mechanism in engaged 01' driving position; Figure llisaside View Of the Same; prQVed means for recQI-ding drawings, maps’ (10cm 3, Figure 12 is a rear View of the same in released ments and the like on photographic ?lm, such 01' lndexed Position‘; as micro?lm Figure 13 is a diagrammatic illustration of the Another object is to provide improved appara- ' ?lm reels and take-11D drive; tus of the above nature including means to reproFigure 14 is a plan View of the shutter; ‘duce the photographed drawings, etc., by direct m enlargement. A further object is to provide an improved‘ can gya~ppQjgCtOr adapted to photograph data as noted and to reproduce the same through the same lens with identical setting, whereby any pos- 15 sible aberration in recording ‘is automatically cor-, rected in reproduction. Another object is to provide a camera~projector of the above type having improved means to index, register andexpose the ?lm. 1?“ Figure 15 is a detail Side View Of the’ Same, showing the driving gears; and Figure 16 is a Wiring diagram of the various electrical apparatus embodied in the invention. ThiSI application is a diViSiOYl of application, serial N0. 425,528, filed January 3, 1942, now Patent N0. 2,369,247, dated Dec. 13, 1945. Referring to Figure 1, the camera-projector 542 has a main base or bed plate 43- A stepped ver tical sleeve M3 is secured in the front end of the base 63 and has rotatably mounted therein, a sec Another object is to provide a suitable object nd sleeve 45 on the lower end of which is secured table platen and improved means to support the a Worm-gear ring 46. A cylindrical lens barrel same and the camera in rigid mutual relationii‘? is threaded at 48 in side 49theengaging second asleeve ‘45, ship, whereby possible vibrational ?exings beand has a longitudinal slot suitable tween them are substantially eliminated and if '35 key 50 in a stationary ring 5! secured in the ‘up any vibration is present the table and camera per end of the outer sleeve 55. A suitable lens vibrate together as a unit. assembly 52, having a lever 53 for adjustment of A further object is to provide improved ilthe usual iris diaphragm (not shown),ismounted luminating means for the object table. in the barrel 41. Another Object is '60 provide improved power 30 A reversible motor 54, mounted on the bottom and control means by which elevation and lowerof the camera base 43, has on its shaft a, worm ing of the camera, adjustment of ‘the lens focus, actuation of the indexer and shutter, and the 5e meshing with the gear ring 43_ From the foregoing description it will he evi various other operational functions are readily dent that when the motor 54 is operated the cal‘riedrollt by 1661110175 Control from a Single 'oper- 3'5 worm 56 revolves the gear ring 46 and with it the ator’s station. sleeve 45. The barrel 4'! being threaded, in sleeve Qtber objects and advantages of the invention 45 but restrained from rotation by the stationary will become evident during the course of the fol- key 56, rotation of sleeve 45 feeds the barrel 4? lowing description, in connection with the accomand with it the lens assembly 52 upward or dawn Pally-ins t11"aWiI1gS,inWhiCh— ‘1'0 ward depending on the direction of rotation of Figure 1 15-21. vertical side view of the camerathe motor 54. Thus the motor 54 is adapted to projector and related apparatus partly in section; adjust the focus of the lens assembly 52, each revolution of the motor changing the lens posi Figure 2 is a detail View Of the elevation indi_ tion by a de?nite small increment pro-determined eating scale; ‘ 40 by the lead of the thread 43 and the reducing Figure 3 is a detail view of the exposure motor ratio of the worm ‘5'6 and gear 46; for example, holding switch and cam; an increment of .00025 inch. Figure 4 is a similar view of the cam and switch Removably disposed in the central portion 50 for controlling open shutter Warning light during _' of the camera-projector 62 is a ?lm-control and picture taking; » "a shutter sub-assembly 6!, shown in detail in Fig Figure 5 is a detail plan view of the ?lm gate, ures 5 to 15, and to be presently described. indexing, registering and shutter structure; A lamp housing 52 is horizontally pivoted at Figure 6 is a vertical detail view of the‘ same as and normally engages the top of the central partially on the lines 6-5, Figure 5; __ portion 60 in light-tight relationship. A con Figure 7 is a detail view of the pressure plate ‘JD densing lens system 64 is secured in the bottom control cam, lever and plunger; of the housing 62 in optical alignment with the Figure 8 is a ‘detail View of the indexing cam, projection or photographic lens 52. ‘A lamp 65 leverrand plate; is mounted in a socket 86 in the rear end of the Figure 9 is a vdetail side view of the camshaft housing 62. An inclined mirror 6"! is adjustably gear and cams‘; 60 secured to the upper front wall 68 of the housing 2,407,902 3 vided with horizontal side slots I09 and H0} in position to direct light from the lamp 39 to the condensing lens system 64, thence through the sub-assembly BI and projection lens 52. Ven through which the ?lm I91 is threaded. The ‘ ?lm overlies a gate or circular mask II I secured in a horizontal partition H2 in the casing I08. A tilation for the lamp 35 is provided by a pipe 99 transparent pressure plate I I3, preferably of cir cular shape, is held in a frame I I4 trunnioned at H5 and H3 toayoke H1. The shank H9 of yoke H1 is loosely pivoted to the top of a plunger II9 vertically slidable in a boss I20 in the partition’ IIZ as shown in detail in Figure '1, the plunger leading up through the bottom of the housing > 62 and suitable openings ‘Iii in the rear thereof. A light shield or hood TI is pivoted at 12 to the carriage 4|, the front‘ upper end 13 of the‘ hood normally overlying the rear top of the lamp‘ housing 62. A rod 14 is horizontally pivoted at 15 to the rear of the housing 92, while the rear - II9 being urged upward by a spring I2 I. A ful crum block I22 has therein a slot I23 in which the shank H8 is retained hy means of a normally end of the rod engages a socket. 19 secured to the back of the hood 1 I. retractible pin I24. The lower end of the plunger I I 9 is slotted and has therein a cross pin I25 sup porting the end of a lever I26 which is fulcrumed When the housing 62 is swung upward and rearwardly on its pivots 63 to allow access to the sub-assembly 6| as hereinafter set forth, the rod 14 swings the hood 1I upwardly as illustrated in on a stationary pivot pin I21. A cam I28 on the drive shaft 19 engages and is adapted to rock the dot and dash lines, Figure 1, thus providing ample clearance between the top of the housing and the hood. - lever I 26 downward. 20 A motor 11 having a suitable speed-reducing gear head ‘I9 is mounted in the base 43 and is adapted to drive the shaft 19 of the sub-assembly 6| through an extension shaft 99 and a jaw cou~ pling BI. The extension shaft 89 carries two \ cams 82 and 03, shown in detail in Figures 3 and 4, these cams being adapted to respectively con~ trol switches 94 and 85 for purposes hereinafter set forth. Rubber vibration dampers We are pro vided in the mounting of motor 11. The column 40 is provided with a longitudinal ' Normally the upward pressure of the spring I2 I, acts through the plunger I I9, holds the shank IBI of yoke I I1 against the retractible pin I23, the latter acting as a fulcrum and caus ing the vtrunnioned pressure plate “3' to press the film I91 downward against the gate I! I. The trunnions II5 and N9, the free sliding and rock-' ing permitted the shank I I8 in the fulcrum slot ' I23, and the loose pivoting of the shank to the plunger H9, allow the pressure plate I I3 to float into ?rm and even engagement throughout the entire underlying portion of the ?lm I91, thus as suring accurate ?atness of the latter across the key 86 ?tting in the rear portion of the carriage gate III. 4|, thereby preventing any swinging motion of When the cam I28 rocks the lever I26 down the carriage and camera-projector about the ward during the operation of the device as here column. inafter described, the plunger I I9 is drawn down A reversible motor 81, mounted under the frame ward against the pressure of spring I2I. The 30, is provided with a worm-gear speed reducer shank H3 engages the curved bottom I23a of the A 88 roller carrying chain on95itsis output securedshaft to the89upper a sprocket portion of slot‘ I23 which acts as a fulcrum, causing the the carriage 0i and extends upward therefrom 40 pressure plate I I3 to be raised out of engagement with the film I01. and over an idler sprocket 92 on the top of the column 40, thence downward through the inte rior of the column and around a second idler sprocket 93 to the drive sprocket 90, and thence A second shaft I29, journalled in the casing I00 and hereinafter referred to as the sprocket shaft, has rotatably mounted thereon a sprocket via a third idler sprocket M to a turn-buckle 95 45 spool I30, the latter having the usual teeth I3I engaging the perforations I32 of the ?lm I01. A grooved shoe I33 underlies the sprocket I30 and keeps the ?lm at all times in proper engagement with the sprocket teeth. A horizontal drive pin I34 is secured in the rear and as the worm speed reducer 88 is of the irre 50 end of the sprocket spool I30. An annular driv versible drive type the latter acts as a lock to ing member I35, slidably mounted on the shaft hold the carriage at any point of elevation when I29, has a series of index holes I33 correspond the motor is stopped. The turn-buckle 95 is op ing in number and circumferential spacing to the erable to take up any slack in the chain. A heavy sprocket teeth I3I, each hole being adapted to weight EiIa is secured to the chain 9! inside ‘the engage the pin I34 as-shown in Figure 5. When column 90 to serve as a counter-balance for the so positioned the driving member I35 is held greater part of the weight of the carriage and pressed in the described driving engagement with camera-projector. ' the pin I34 by a compression spring I31. A pin A measuring tape 99 has its free end clipped to the chain 9I at 91 just below the turn-buckle 60 I38 in the shaft I29 engages a longitudinal slot I39 in the member I35, allowingthe latter to be 95, the tape extending downward in front of the slid longitudinally on the shaft but normally pre chain through a slot 99 in the table 39 and to a venting any rotary motion between. these parts. spring actuated retracting reel 99 of any suitable A short circumferential extension I40 is- pro type secured under the table. 1 As the mechanisms of such reels are well known 65 vided in the front of the slot I39. When it is desired to rotate the sprocket I39 and} form per se no part of the present invention, manually, as in threading, adjusting or remov no further description is required herein. It is ing the ?lm I01, the member I35 is slid rear evident, however, that as the carriage is moved wardly against the pressure of spring I31 until upor down the tape 96 unreels or re-reels through the'slot 93 and the figures I99 (see also Figure 2) 70 the front of the slot I39 encounters the pin I39, whereupon the member I35 is turned to hook the thereon serve as a visual indication of the height pin I38 in the circumferential extension I40 of of the camera-projector above the table 34 as the slot and thereby prevent forward sliding re _ illustrated in Figure 2. turn of the driving member. By this operation , Referring to Figures 5 and 6, it will be seen that the sub-assembly GI has’ a casing I08 pro 75 the driving member I36 is withdrawn from and, secured to the bottom of the carriage 4!. When the'motor 31 is operated to drive the chain 9| the carriage and camera-projector assembly is raised or lowered along the column ‘99, 2,407,902 locked out of-engagement‘with the pin I94, leav ing the sprocket free to be manually revolved on the shaft I 29. When manual adjustment is com pleted, the member I35 is returned to engagement with the sprocket hub by the reverse of the re leasing-operation described, the pin I94 entering any chosen hole I36 andassumingan ‘accurately indexed setting. 6 tent‘ I5I rides on ‘the periphery of the plate I42‘ until the succeeding notch I149 or I50moves into registry with the detent, when the latter again is forced into the notch by the spring ‘I54 to again release thepawl Ii55‘and stop the plate and sprocket as previously described. From the foregoing, it is ‘evidentthat once dur ing each revolution of the drive shaft 19, vthe The spring I 3''! is backed by the hub I41 of a plate I42 and sprocket I30‘ are driven exactly clutch ‘plate I42, the hub I4I being pinned to 10 one-half revolution, and ‘the ?lm I01 is conse the sprocket shaft I29. To the rear of the plate quently moved an index distance corresponding I42 is a ratchet I43 having a hub I44 carrying a to one-half the pitch circumference of ‘the spur pin-ion I45 (Figures '5‘ and 11), the ratchet sprocket I30, this distance equalling one *frame and gear ‘combination being rotatably mounted spacing of the film. ‘Since the ratchet I 43 is on the shaft 1 29. 15 driven at double the rotative speed of the drive The pinion I45 meshes with an idler- gear I46 shaft 79, as previously‘set forth, ‘it is alsoevident which in turn meshes with a gear 'I-4'I~secured to that the movement of the film» takes place/dur the ‘drive shaft 19, the driveratio-in the present ing one-quarter revolution of the drive shaft 119. embodiment being one to two, 1i. e., one revolu The earn l28 (Figure 7) has a comparatively tion of the drive shaft '19 drives the ratchet I43 20 wide lobe I~28a which forces the lever I26 down through two revolutions. ‘The gear I41 carries on ward just prior to release of the detent 45I from its rear side the cam I29 as shown in ‘detail in Figure‘Q. The gear also carries on its front side a second cam I48, the‘ purpose of which will pres ently be explained. The clutch plate I42 has in its periphery two oppositely spaced notches I49 and I5!) (Figures 8, 1‘0, '11 and 12), adapted to receive a detent 151 “on theend of a lever (‘I52 pivotedon the pin [2‘! (Fig-ure 8). > A horizontal arm‘ I53 of the lever ‘I52 engages’ the second ‘cam ‘I548. A tension ‘spring I154 urges the arm ‘1'53 upward ‘to hold the detent I5I in-en ' its engaged notch and holds ‘the lever I26 Ide pressed during the described half-revolution of the sprocket I 30. By this means the pressure plate H3 (Figures 5 and 6) is raised and held clear of the ?lm 101 while the latter is moved. In Figure ‘6, it will be observed that while released by the pressure plate II3, the ?lm I0‘! is guided by the shoe I33 and a roller I64, the latter being \disposed‘in the left hand magazine I101 near the reel I95 as shown diagrammatically in Figure 13. The heights of the shoe ‘I33 and roller I64 are such that when gagement with the plate I42 except when the de released as noted, the ?lm I07 clears ‘the gate tent ‘is withdrawn by action of the cam I48 as 35 II I, By this means the ?lm is kept out of slid hereinafter set forth. ing contact with the gate during its movement, A pawl I55 is pivoted at I 56 to the rear face thus avoiding any ‘possible abrasion. of the plate I42 and is adapted to be rocked into A pulley £95 on ‘the end of the sprocket shaft engagement with the ratchet I49 by a spring I5‘! I29 (Figure 5) drives a spring friction belt 166 (Figures 1-0 and 12). The rear end I58 of the 40 which in turn engages 1a second‘pulley I167! con pawl I55 is disposed alongside the notch I49, so nected to the film reel I06 as ‘shown diagram that when the detent I5I occupies the notch I49 matically‘in Figure 13, thus providing a yielding as shown in Figure 16, it holds the pawl I55 out or slip take-‘up drive’for the reel ‘I 06. of engagement with the ratchet I43. A disk ‘shutter I68 (Figures -6, 14 and 15‘) is An ‘arcuate link I59 'is articulated at I60 to the 45 rotatably mounted on the bottom plate I69~ofthe pawl I55, and at PM to ‘a short second link I62 sub-assembly casing 68, and is adapted to be which is pivotally mounted at I63 on the plate driven at ene-to-one ratio from the drive shaft ‘I42. The joint I6I between links I59 and I62 is 19 via mitre gears ‘I19 and Ill. The shutter ‘I68 disposed beside the notch I50, so that when the normally overlies and closes off a light opening ‘detent I 5| enters the notch vI50 it presses the 50 H2 in the bottom plate ‘I 99 above the lens 52 and ‘joined ends ofthe links inward, causing the links in optical alignment with the ?lm gate I I "I. to operate as a toggle to force the pawl I55 out By this means the shutter-normally prevents ‘of engagement with the ratchet I43. Thus it will passage of light between the lens and ?lm. The be seen'that engagement of the detent I5I ‘with shutter I68 has a cut-out portion ‘or notch I73 I'ei-ther notch I49 or I 50 releases the pawl I55 extending throughout 90 degrees ‘of arc in the from the ratchet, while the detent, urged into thenotch by the tension spring I54 (Figure 8), embodiment illustrated. stops and holds the plate I42 in a pre-determined position, the ratchet "I43 continuing to revolve speed, the ‘passage of the notch I13 over the open ing permits the passage of light from the lens to the ?lm for a pre-d'etermined exposure time, as hereinafter set ‘forth. The gearing of the shutter to the shaft ‘I9, o’f course‘is so arranged that the exposure takes place while the film I01 on the shaft I29. During rotation of the- shutter at ‘constant As the plate I42 is normally connected to the sprocket 130 via the shaft I29 and driving mem ber I35, as previously described, the sprocket I30 and ?lm I97 are thereby held accurately in in is 3stati0nary and held ?at by the pressure ‘plate 'dex position as long as the detent I5I remains 65 II . in one of the notches I49 or I50. Referring to the typical'wiring ‘diagram (Fig Once during each rotation of the drive shaft ure 16), the numerals 204 and 205 designate the ‘I9 (Figure 8), the ‘cam I48 depresses the lever conductors of a suitable source of A.-C. current arm. I93, thus withdrawing the detent I5I from supply, leading into the main or line switch I86, whichever notch it has previously engaged, al 70 thence to distributing conductors 296 and 207. lowing the pawl I55 to engage the rotating Branches 208 and 209 lead'to manual switch ratchet I43 and thereby drive the plate I42 and I85, hereinafter termed the light switch. From sprocket I30. . the "output poles of the switch I85 wires, 2H) and ' When the comparatively narrow lobe I 48a of the 'cam I48 releases the lever arm I53, "the de 2| I are connected to the‘variable transformer I8]. 75 The lamps I94 for illuminating "the documents ‘ 2,407,902 8 7 second distributing conductor 201; A manual are connected in parallel between conductors 2 I2 and 2I2a fromvthe output terminals of the trans former I81. It will be seen from the above description that when the switches I86 and I31 are closed, the switch I18 is shunted across the time switch, I83 by means of wires 229 and 230. Thus when switch I18 is closed, the, lamp'?iiremains energized ir respective of the time switch I83. The time switch I83 is preferably of the well known electrically actuated type, a branch 226“ being provided. to supply a current ‘connection from 206 to the actuating mechanismunder con lamps I94 draw current’ and are illuminated, the voltage and consequently the intensity of the il lumination being adjustable by means of the variable transformer I81. ' v The reversing switch I19 is of the three-pole 10 trol of the button I84. The shutter motor 11 is connected on one side via‘a lead 23I to the con double throw construction with a central “off” position. The switch has upper and lower con tact points 2I3, 2I4, 2I5 and 2I6, 2I1, 2I8, re spectively adapted to be alternately engaged by poles 2I9, 220 and 22I, poles 2I9 and 220 being ductor 206. A wire 234, from the second side of the motor 11, is connected to the normally open electrically joined together; Contacts 2 I 4 and 2 I 5 cam switch 84 (Figures 1 and 3) thence via lead 235, the toggle switch I11, and a lead 236 to the conductor 201. Also, from the other or second are respectively cross connected in the usual man side of the motor 11, a wire 232 is connected to 15 the normally open foot switch 20I, which latter ner with contacts 2I1 and 2I8 for reversing the is in turn connected via lead 233-to the lead 235. current direction through ?eld connectors 222 and From the above connections, it is evident that 223 leading to the elevating motor 81. Poles 220 20 the motor 11 may be energized through either one and 22I have leads 224 and 225 comprising arma of two parallel circuit-closing means, that is‘ via ture connections to the motor 81. Pole 22I is also the foot-switch 20I or via the cam switch 84 connected via the normally open push-button and manual switch I11., which latter is normally switch I8I with the distributing conductor 206. Poles 2I3 and 2I6 are connected to the second 25 kept closed during photographing operation. The cam 82, as previously set forth, is secured on conductor 201 respectively via the normally closed the, low-speed geared output shaft 80 of thermo limit switches I95 and I96. When the switch I19 is thrown to upper posi tion and the push-button switch ISI is closed, tor 11. The contour of the cam 82 is such that it allows the switch 84 to remain open only in nor the connection from conductor 206 is completed mal or stop position as shown. , ~ via switch IBI, pole 22I, to the motor armature When the foot-switch 26I is momentarily closed lead 225,_also via pole HI and contact 2I5 to the to start the motor 11, the initial movement of the ?eld lead 223. cam 82 also closes the switch 84 and holds it closed At the same time current flows from the conductor 201 via limit switch I95, contact 2I3 and pole 2I9 to the pole 220, thence to the second armature lead 224, and via contact 2I4 to the second ?eld lead 222. ‘By this means the motor is energized to raise the carriage 45 (Figure l) . after opening of the foot switch, thus keeping the motor energized and causing it. to drive the shaft 80 throughout one complete revolution, whereupon the cam 82 again allows the switch 34 to break the circuit and stop the motor 11. If the toggle switch I11 is opened, as in projec When the switch I19 is thrown to downward 40 tion operations hereinafter described, it is evident that no holding circuit can be established by the cam switch 09, and the motor 11 remains solely leads 224 and 225 are the same as described ex under control of the switch I11. 7 ' cept that the pole 2 I 9 received current from con The second cam-switch 85 (Figures 1 and 4) is ductor 201 via limit switch ‘I96 and lower con tact 2I6 without any change in polarity. How 4.5 connected in series with the signal lamp 203 across the conductors 296 and'261 via wires 231, 238, and ever, the ?eld leads 222 and 223 now receive their 239 (Figure 16). The cam 83, also mounted on current from poles 22I and 220 respectively the shaft 86 as previously set forth, is of such through the cross connected contacts 2I8 and 2I1 contour as to close ,the switch 85 ‘and thereby respectively. The motor ?eld is thereby reversed, causing the motor 81 to revolve in the reverse 50 cause the signal light 203 to light up during that portion of the revolution of shaft 60 when the direction and lower the carriage 4 I . previously described shutter I68 is open. If during upward driving operation of the mo The focusing motor 54 is connected through tor 81 the limit switch I96 is opened, the de the reversing switch I30 with the conductors 206 scribed supply from conductor 201 is broken caus ing the motor 81 to stop. Thereafter, current 55 and 201, the normally open push-button switch I82 being interposed in the circuit connection can be restored only by throwing the switch down from conductor 206. As the operation and wir ward to complete the connection through the sec ing of such reversing switches are well known ond or lower limit switch I96, whereupon closure and have previously been described in connec of the button switch I8! again energizes the mo 60 tion with elevating motor 61, further detailed de tor in the downward driving direction. scription thereof is believed unnecessary repeti Similarly, if the lower limit I96 switch is opened tion herein; it is evident that throwing the switch ' to stop the motor, the latter can only be ener I86 to upper or lower position conditions the mo gized after throwing the switch I19 to upward tor circuit for operation of the motor in either driving position. By the above described means, it will be seen 65 desired direction under control of the push-but position, the current connections to the armature ~ that engagement of either limit switch with its operating abutment I99 or200 stops the progress of the carriage 4|, but the latter may be there after moved away from the extreme or limit po ton switch I82. , > ' The operation is as follows: Photography When it is desired torecord images of docu 70 sition after reversing the switch I19. ments, maps, drawings, or the like, the operator Returning to Figure 16, a branch lead 226 con ?rst places a frame of developed ?lm in position nects one side of the projection lamp 65 with the on the ?lm-gate I I I under the pressureplate I I3, distributing conductor, while the other side [of the the housing 62 having been previously swung‘up lamp is adapted to be connected via a lead 221, the time switch I83, anda second lead 228 to the 75 ward and open on its pivots 63 to allow access to 2,407,902 9 . the interior of the sub-assembly 6|. While the housing is open, the spring-pressed fulcrum pin I24 (Figures 5 and 6), may be withdrawn to the left, releasing the shank II8 so that the pressure plate H3 may be swung upward clear of the ?lm I Ill and gate II I to facilitate positioning the ?lm. This process is then reversed. The housing 62 is closed down, and the “enlarger” switch I18 is closed, thereby turning on the projection ‘lamp * ing the remainder of the‘ revolution of shaft 80 after closure of the shutter, the cams [I28 and I48 respectively raise the pressure plate I I3 from the ?lm it)? and disengage the detent IEI from the notch N59 or I5?, thereby causing the sprocket 535] to move the ?lm forward one frame in the manner previously explained. The single revolu tion of the shaft 89, Figure 5, thus effects the ex posure and-conditions the apparatus for thenext 65. The operator next depresses the foot-switch 10 exposure. The operator removes the ?rst docu 20I, starting the shutter control motor ‘I’! and meritv or other subject photographed from the allowing the latter to run under control of the table 3%, places the second in the same position, cam-switch 84 until the shutter reaches wide and again depresses the foot-switch 20-1 to photo open position. At this point the manual switch graph the second subject, and proceeds in the I1? is opened to stop the motor 77, leaving the 1.5 manner described to record the desired series" of shutter in open position, the pressure plate hav subjects on successive frames of the ?lm I01. ing meanwhile been lowered into engagement As noted previously, an entire series of subjects with the ?lm by the spring IZI, Figure '7. may be‘ photographed after a single initial set The shutter I68 being open, light passes from ting of the ?eld and focus. However, once a the lamp 555 to the inclined mirror 61, thence 20 certain desired ?eld and focus setting have been downward through the condensing lens system arrived at for a given size of subject, no initial 54!, the shutter sub-assembly 6! and the ?lm projection is necessary thereafter in order to ar therein, and the lens 52, an image of the devel~ rive at‘this setting for later recordings, due to oped ?lm frame being projected on the table 313 the provision of the height scale 96, Figures 1, or on a sheet of material spread thereon. The 25 and 2, and the focal setting. When the operator operator then manipulates the elevator switch has initially arrived at the proper ?eld and focal I19 and push-button IBI .to lower or raise the settings as described, he may observe and note carriage and camera-projector by means of the down the readings of the scale 96 and the focal motor Bl until the projected image covers the setting. Thereafter, when it is desired to photo desired area.’ The operator similarly manipulates graph further subjects of the size or seriesnoted, the switches I80 and IE2, to adjust the lens 52 by or to reproduce the subjects by‘ projection as means of the focusing motor 54 until the image hereinafter described, it is only necessary to op is» sharplylfocused. The. foregoing ?eld and focus erate the elevating and focusing switching means adjustments‘ may be made with‘the image pro until the previously noted height and focal read jected directly ontthe sheet to be photographed 3-5 ings are obtained. Similarly, subjects of differ orv on a suitable blank‘ sheet of proper size. - The document, drawing, or the like, having beensecured to the table 34 by any suitable means such as tacks, tape, or weighted retainers, and the previously described ?eld and focus ad justmehts having been made, the lamp 65 is ex tinguished by opening the switch I18 and the ‘ ent areas may be photographed in series with out intermediate test setting or focusing, simply by manipulating the elevating and focusing con trols to bring the scale ‘and counter readings to previously determined proper ?gures for the‘var ious sized subjects. In case of series photograph ing of widely differing ?elds or areas, and conse quent lens distance, it may also be desirable to the motor ‘H to be energized through the cam Vary the intensity of the illumination by manip switch '84 as previously described. The motor 45 ulation of the transformer control handle I90 as shutter switcht'l'l is‘closed, ‘the latter causing ll‘! ‘runs until the cam 82 opens the switch 85 in normal position as shown in Figure 3, thereby previously described. It will be noted that all of the foregoing opera closing‘ the shutter. The ‘operator replaces the tions may be effected by the user. from a single developed‘ film with unexposed ?lm, threading position in front of the table 31!, the normal the latter from the reel I85, through‘the control 50 functions , of setting camera height, setting the sub-assembly 5|‘, as shown in Figures 5 and‘ 6,.and focus, setting the illumination, making the ex to the take-up reel‘ tilt; the housing 62 is again posure, and resetting the ?lm being carried out lowered into closed position to exclude light. by remote control from the panels I75 and H6. ‘It will be‘ understood the above described_ preparatory ?eld and focus setting .need be' per formed only once, at the beginning of a series of photographic recordings of similar size. To photograph the document spread on the table '34 the lights I95 are turned on by ‘closing the switch I35 and if required the intensity of 60 illumination is adjusted by means of" the vari able transformer ‘I31, either to a pro-determined setting of the handle T90 or by use of’ any suit able light meter.‘ The operator then momen tarily closes the foot-switch 20! to start the shut ter motor ll‘, the cam-switch ‘8t thereafter caus ing the motor to' drive the shaft 80 until one com plete; revolution is. completed as previously set forth. Y 1 , ‘ ‘ Even the manual operation of changing or ad justing the ?lm It? in the camera may be carried out from the same position, since the camera may be lowered to extreme bottom position di rectly in front of the operator, the proper original height being afterward restored, as previously noted, from the scale 96. It is obvious that pro vision of the described complete remote control from a single position adapts the device to rapid and easy operation with a minimum of fatigue for the user. Reproduction When it is desired to reproduce previously pho tographed subjects,‘ the developed ?lm carrying the images is threaded into the camera-projector A2 in the manner previously described for inser During the single revolution noted, the notch 70 tion of raw ?lm. The projection lamp 65 is or‘ opening I13 of the shutter I68 traverses the turned on, the shutter I68 is again opened by optical path between thelens Wand the ?lm I 61, manipulation of switches Ill and‘ 2M, and the allowing the lens to cast an illuminated image proper camera heightand focus are arrived at of the document on the ?lm during a pre-deter either by direct test projection on a blank sheet mined length of time to effect the exposure. Dur 75 on the table 34 or by setting to height and focal 2,407,902 , V 11 12 said frame and joining said sides to'divide said, indicating ?gures previously noted at the time of photographing the particular subject to be re frame into an upper and a lower compartment, 9. ?lm gate formed in said web, a transparent pres-, sure plate in said upper compartment, a holder for said pressure plate, a yoke on which said hold er is trunnioned, a lever supported on said web, .produced. _ The time switch, I83, having been set for. the desired period of exposure, the switch I18 is opened to extinguish the lamp 65 and a suit able sheet of sensitized paper or the like is se cured in proper position on the table 34. The time switch I83 is tripped by means of its in said upper compartment and carrying said yoke, a plunger reciprocally mounted in said web button I84, the switch closing and remaining ‘ - and having its upper end pivotally connected to closed for the predetermined time in the usual 10 said lever, spring means urging said plunger and v manner of such switches. The lamp 65 is there imparting said urge via said lever to said pressure by illuminated during the pre-determined period, plate, an intermittent movement for moving said during ‘which period the' enlarged image from ?lm through said gate, and cam means in said the ?lm IE3‘! is projected on the sensitized sheet. lower compartment connected to said movement When the time-switch I83 has again extin 15 and adapted to move said plunger against the guished the lamp 65 the sensitized sheet is re urge of said spring and separate the pressure moved for development and/or ?xing in the usual plate from said ?lm gate while said ?l-m is mov-; manner. In case a succeeding image on the ?lm ing therethrough. ‘ , ' ' strip is to be reproduced, switches I11 and ZIII 2. In a camera projector, a horizontal rectan are operated until the shutter motor l'l has closed 20 gular frame having vertical sides, a web within and again reopened the shutter I68, during which said frame and joining said sides to divide said operation the ?lm has been advanced one frame frame into an upper and a lower compartment, in the manner previously described, after which 2. ?lm gate formed in said web, a transparent a second sensitized sheet is placed in position and the second projection exposure made as set 25 pressure plate in said upper compartment, 2. hold er for said pressure plate, a yoke on which said forth. holder is trunnioned,' a lever supported on said In case it is desired to make more than one web in said upper compartment and carrying said print from the same ?lm frame, the operator yoke, a plunger reciprocally mounted in said web simply changes the sensitized sheets and effects the exposures by repeated trippings of the time 30 and having its upper end pivotally connected to said lever, spring mean'surging said plunger and switch I83 without intermediate closings of the imparting said urge via said lever to said pres shutter I68. 7 sure plate, an intermittent movement for moving All the described reproducing operations are said ?lm through said gate, a lever pivotally sup carried out from the single operating position, and-except of course for changing the sensitized 35 ported in said lower compartment and having a free end operatively connected to said plunger, paper, all are done by, remote control, with the and cam means in said lower compartment con same advantages of speed, ease and precision nected to said movement and adapted to engage‘ and move said lever, thereby moving said plunger ‘While the apparatus is adapted to reproduc tion in the precise original size, it is obvious that 40 against the urge of said spring and separating the pressure plate from said ?lm gate while said enlargement or reduction in the reproduction ?lm is moving therethrough. ' may, readily be made by proper setting of cam noted with‘ respect to recording. era-projector height and focus. ' 3. In a camera projector, ‘a horizontal rectan I gular frame having vertical sides, a web within From the foregoing description it will be seen that the invention makes possible the photo 45 said frame and joining said'sides to divide said graphic recording and reproduction‘ with maxi- . frame into an upper and a lower compartment,‘ a mum rapidity, precision and accuracy, guess ?lm gate formed in said web, openings formed in opposite walls of said'frame in alignment with work being eliminated. The' accuracy is aug said ?lm gate and providing i passage there mented by the fact that reproduction takes place by projection through the same lens and, if de 50 through for said ?lm, a transparent pressure plate in said upper compartment, a holder for sired, ‘with the identical setting used in the said pressure plate,‘ a yoke on which said holder. original photographic recording. Thus any de is trunnioned, a lever supported on said web in fects, such as optical aberration or blurs im-_ pressed on the ?lm for any reason, even such ‘as , said upper compartment and carrying said yoke, slightoptical defects in the lens, are automatical 55 a plunger reciprocally mounted in said web and having its upper end pivotally connected to said . ly cancelled out and corrected by reversal in the lever, spring means urging said plunger and im— projection through the same lens; the results are parting said urge via saidlever to said pressure thilis uniformly sharp reproductions of the origi na s. , A convenience outlet 248, connected to the con ductors 295 and 291, Figure 24, may be provided at any suitable location on the device, for sup plying current to any auxiliary electrical appa ratus, such as extension lights or the like, which it may be desired to use in connection with the apparatus. ~ plate, a shaft in saidupper compartment, an in- . 60 termittent movement for moving said ?lm through said gate, a lever ‘in said lower compart ment having one end pivotally supported therein and having its other end operatively connected to said plunger, said lever also having a step formed intermediate the ends thereof, and a cam carried on a shaft journalled in said lower com While the invention has’ been described in [pre partment, said shaft being geared to said first ferred form it is not limited to the precise struc tures illustrated, as various ‘modi?cations and changes may be made without departing from the scope of the appended claims. shaft, said cam acting against said step for mov , What is claimed-is: _ ' 1. In a camera projector, a horizontal rectan gular frame having verticalsides, a web within ing said lever and in turn moving said plunger against the urge of said spring to separate the pressure plate from said ?lrn gate while said ?lm is moving therethrough. '