Патент USA US2113578код для вставки
April 12, 1938, ‘R. H. DRAEGER Q ' 2,113,573 READING MACHINE Filed‘ Nov. 14, 1935 ' ‘ 3 Sheets-‘Sheet 1 April 12, 1938. ' ' ' R,|-|'_ DRAEGER READING 2,113,578 MACHINE ‘ Filed Nov. 14, 1955 3 Sheets-Sheet 2 _ ' ' 3mm Hyper?’ H Draeyeh I . WW April 12, 1938. ‘ " R |-|_ DRAEGER _ 2,113,578 READING-MACHINE Filed Nov‘. 14, 1935 s Sheets-Sheet s Patented Apr. 12, 1938 unites , 2,113,578 "res ‘Artur orrics" 2,113,573 READING MACHINE Rupert H. Draeger, ‘United States Navy ' Application November it, 1935, Serial No. 49,757. 11 Claims. (Cl. 88-—24) ' ‘Granted under the act oi‘ March 3, 1883, as amended'iipril 3t), 1928; 37th 0. G. 757) This invention relates to reading machines and freedom from physical‘ harm as to leave the ?lm more particularly to reading machines of the type in practically new condition after many inser adapted to the use of photographic strip ?lm as the medium containing the reading matter. 5 Heretofore reading matter on film has been chie?y for use in moving picture theatres, using a projection on large screens to be viewed by large audiences, or merely for a record, used oc casionally as a reference with little attention he 10 ing paid to high de?nition of the image. Some few attempts have been'made to design a read ing machine ‘for use with books on ?lm; but these are neither compact designs capable oi being carried from oihce to home, or to great distances 15 on vacations, or on speech making tours, as are portable typewriters, nor are they capable of pro ducing an image on a translucent screen of such quality as to be as easy on the eyes as good print on good paper under the proper lighting. The object of this invention is to overcome the above objections, and at the same time produce a neat and compact, light weight, precision in strument at a moderate cost. The advantages of this new machine are such as to overcome any prejudices which may exist against reading from anything other than a printed book or a type written manuscript and yet be within the reach of all who will have occasion to take advantage or" the new sources of knowledge opened‘ up and 30 readily accessible to everyone through this com paratively new method of publication. The dis semination of scienti?c knowledge, old and new, will be invaluable to scientists working in such specialised ?elds that those interested in the _ :‘5 details are so limited in number as to leave or dinary publishing costs prohibitive. Small librar ies have neither space nor money to offer endless material to readers, but with all of the large libraries co-operating on a supply of film copies lo of anything printed, typewritten or in long-hand and with ample facilities for reading the ?lm copies in every library and many homes, the availability of all literature will be increased many times. 3 Special objects of this invention are to provide a machine which may be set upon a desk or table and of such design that the pages of a book on ?lm may be made to appear before the reader clearly in daylight or in a lighted room and be so made to turn forward or backward with a mini 'mum of e?ort, and also be made to appear right side up on the screen regardless of their posi tion or positions on the ?lm. ~. A further object is to provide a reading ma ,,,, chine which handles the ?lm with such case and tions in the machine. In the accompanying drawings, which illus trate a preferred embodiment‘of the invention: 5 Fig. l is a plan view of the novel machine; Fig. 2 is a side elevation with part, of the side panel cut away; . . ' Fig. 3 is a plan view of the head of the machine below line 3-4] of Fig. 2. Y 10 Fig. 4 is a sectional view of a part of the ro tatable head; and v ' _ Fig. 5 is a plan view of ?lm crank and ?lm gate opening mechanisms. ‘ There is shown at I a housing forming a light- is tight projection chamber and having r'otatably mounted thereon a head 2 carrying ‘the light source 18, optical projection system, ?lm spool spindles Ml, ?lm guides 23, ?lm indexing mecha nism and means for holding the head in any de sired orientation. The optical system consists 20 of re?ector 3, projection lamp i5, condenser lenses 5, transparent heat absorbing medium 6, trans-' parent ?lm gate 7, internal reflecting prism 8, objective lens combination 9, front surface mirror 25 it, and translucent. projection screen It. This optical system ‘may be permanently ad justed at the time of manufacture to obviate‘ the necessity for one unacquainted with such systems. having to attempt getting the best image on the screen. The parts of this system may be of any of the ‘usual designs though ibis necessary for best results to have a high quality photographic lens for the objective and a screen which is both very fine in grain and high in dispersion. 35 In loading the machine with ?lm, knob i2 is turned to the “open’.' position, as indicated by “O” on the drawings, which refers to the position of the film gate l7. Knob 82 through shaft iii turns cam M which through hell crank lever it‘; _ pivoted on the frame of head 2 on shaft 36 moves link“ ill which is engaged with hinged frame is containing the glass gate la and by swinging frame it about axis l9 opens the ?lm gate ‘l. ‘When the pointerknob i2 is at the 45 F‘closed” position, “C”, ?lm gate 7 is closed and the ?at portion of cam it is brought flush with the extension on bell crank 35 upon which it acts, by means of spring 20 one end of which is attached by a pin to cam M with the other end secured to the head frame. With ?lm gate 1 open, ?lm spool 2| is placed upon one of the spindles 44 and the ?lm is placed around guide roller 23 through ?lm gate 1, around the other guide roller 23, and vsecured to an empty ?lm spool 55 2,1ia,o7a ' ' ' , or “take-up” spool II which may beidentical the housing I.- It is thus possible to rotate the with and interchangeable with the loaded ?lm spool. Projection 28 on the cover of the in ternally reflecting prism 8 extends over the top edge‘of the stationary ?lm gate compressor glass head about the housing so- as to change the posi tion of the image on the viewing screen II to make the same most convenient for observation ‘la'_which prevents the ?lm from slipping be tween the outside of this glass and the prism and yet leaves this space open suflciently that the gins surfaces may be cleaned. ‘ by the operator. ‘ . ' I It is also possible to remove thehead 2 from the housing I and place it on another housing of a different size having a larger or mailer re ?ecting mirror and viewing screen. The mirror It is provided witha three-point 10 suspension means 48 so that the angle of the The ?lm indexing mechanism consists of crank-handle 28 mounted on knurled-‘hand wheel 21 secured on shaft 28 rotatably mounted in the - mirror may be adjusted when necessary to side of head 2, said shaft having near its'inner. properly adjust the re?ected image on to the end a collar 28 secured thereto by a set screw 80. Said shaft has its innermost end beveled ‘to an screen ll. ' ~ . edge with included angle of approximately ninety Guide rollers 28 are so placed that when the 15 ?lm gate is open and the ?lm is inmotion, the degrees which engages with shouldered sliding plunger 8i, the shaft engaging end of which is ?lm travels between the plates without touching either plate. formed to an angular groove 32 cut across its 20 end to match the beveled end of shaft 28. This mechanism is in duplicate, one on each side of the head 2. When the shaft 28 is rotated in either. direction, plunger 8| is forced longitudi nally away from shaft 28 until it is stopped by the bearing of its shoulder against the end of the bore in shell 88 and because of torsional resistance o?ered through pin 84 in said plunger, said plunger may not rotate until it has reached The invention described herein may be manu factured and used by or for the Government of 20’ the United States of America for governmental purposes without payment of any royalties there on or therefor. ' a What I claim and desire to secure by Letters Patent is: ‘ _ 25 1. In‘ a reading. machine a ?lm advancing means, a ?lm gate, said ‘?lm gate including a ?xed ?lm gate portion and a movable ?lm gate portion operable transversely to the ?xed ?lm gate portion, a rotatable crank adapted to ad 30 vance the ?lm, a plunger operable by said crank, the limit of its longitudinal motion. This longi tudinal thrust of plunger 8| through contact of said plunger with one arm of bell crank- lever 85 rotates said bell crank lever 85 about its pivot 86 a bell crank, one arm of said bell crank operably and in turn pulls link i‘! causing the previously connected with the movable ?lm gate portion mentioned compressor glass frame It to'swing and the other arm of the bell crank adapted to about hinge axis I! relieving the pressure between be moved by said plunger when operated by said 35 and separating the transparent compressor crank, and a cam contacting with said bell crank glasses ‘la and la" of the ?lm gate, the pres ' and adapted to operate the same independently - sure having been produced by tension spring 81 of the rotatable crank. 2. In a reading machine a ?lm advancing secured at one end to the head frame 2 and at‘ the other ‘end to one of the bell crank levers ’ means, a ?lm gate, said ?lm gate including a to restore the plungers to their normal positions. ?xed ?lm gate portion and a movable ?lm gate portion operable transversely to the ?xed ?lm During the above mentioned operations no ten sion has been placed upon the ?lm,’ but ‘at the gate portion, a crank adapted to advance the time that plunger 8! has moved as far away ?lm, a plunger operable by said crank, a bell from shaft 28 as possible, the shaft commences crank, one arm of said bell crank operably con to transmit a torque to the groove in the end of nected with the movable ?lm gate portion and plunger 8i so long as the crank‘ handle 28 is the other arm of the bell crank adapted to be turned, which torque is transmited through the pin 84 to the shell 88 which is secured to the grooved pulley wheel 88 which rides unsecured on shaft 28. Pulley wheel 88 is connected by endless belt 88 over the one-way clutch pulleys 48 to another identical pulley wheel ‘88. The clutch 82 is of a type which permits torque to be transmitted in one direction only, and-with clutch bodies 88 designed to engage in such a manner and secured to ?lm spindle shafts 44 that one or the other only of the shaft isturned for one direction cranking, the other shaft being idle, and the previomly idle ?lm reel' spindle‘ shaft 84 becoming the driving spindle when the direc . 40 . 45 moved by said plunger when operated by said crank, and a cam contacting with said bell crank and adapted to operate the same independently 50 of the crank, and a spring adapted to return the cam into non-operative position. 3. In a reading machine a ?lm advancing means including a shaft having a beveled end, a hand‘ wheel ?xedly mounted on said shaft, a pulley freely rotatable on said shaft, a shell rigidly connected with said pulley and provided with a slot in its free end, a plunger having a slot in one of its ends, the beveled end of the shaft being adapted to engage said slot, said 60 plunger being arranged slidably in said shell, a. tion of cranking is‘reversed. pin extending through the ‘plunger near the end Thehead! isrotatablyandremovablysup away from the shaft and being located inside xportedonthehousinglasshownindetailin the slot of the shell, a‘?lm gate having a movable Hg. 4. Theobjective'lens liscarried in alens portion, a bell crank, a connecting link between _hohierl8,whichisthreadedintoahollowboss said bell crank and the movable ?lm gate por- . 88 proiectirn' upwardly from the‘top of. the ‘ tion, the free arm of the bell crank being located houslngl. 'I‘hishollowboss?actsasasup in the-path‘of travel of- the plunger when the 'portingspindleforthehead8,thehead2be same is forcedinto sliding motion by the rotating in: provided with a hollow shaft-way into which shaft before the pin engages the walls of the 70 thespindleboss?proiectatheaxis'ofthis' shaft-way eoincidingwith the beam transmitted " slot in the shell. ' 4. A ?lm reading machine comprising a hous throinhgthe prism 8'tofthe mirror II. A set ing, a head rotatably mounted thereon, a ?lm screw l‘lproiecting through the end of the head ' carrying means and a ?lm illuminating means in 'II ‘8 serves to'hold the head ?ned at any angle on 'said head,‘ means for projecting an illuminated 8,118,678 3 image of the ?lm into said housing, a stationary ?xed member and a second member movable mirror and a stationary viewing screen in said ‘ transversely with respect to said ?xed member housing, said mirror being so positioned with re for pressing the ?lm against the ?xed member, spect to the illuminated image on the ?lm as to means for advancing the ?lm through said gate, direct it when the head is rotated to said screen a plunger and a bell crank connecting said sec irrespective of the angular position that said head ond member with said ?lm advancing means, may occupy on the housing, said head being ro tatable about an axis substantially parallel to the axis of the projection beam, whereby the 10 projected image may be oriented-on said screen _ independently of the position of the ?lm in said ?lm-carrying means. 5. A ?lm reading machine according to claim ‘ 4 and in which the means for projecting, com 15 prises a re?ector in said head for directing the ?lm illuminating beam ,i'rom the head to said mirror in said housing in all angular positions of said head. ' - 6. A ?lm reading machine according to claim 20 4 and in which said head is mounted on a hollow bearing provided on said housing, theilluminated image being directed through the bearing into said housing. _ 7. In a ?lm reading machine, a ?lm gate hav means controlled by said ?lm advancing means and including said plunger and bell crank for transversely moving the movable member of the ?lm gate away from the ?xed member prior to 10 the movement 'ofthe ?lm therethrough, whereby said ?lm gate is automatically opened in response to the motion of - said ?lm advancing means. \ 9. In a ?lm reading machine according to claim 8 and in which a pivoted'member is connected 15 to the movable ‘?lm gate member and is con nected to said crank by said plunger. 10. In a ?lm reading machine according to‘ claim 8 and in which ‘means normally urge said movable member to close, a rotatable crank 20 adapted to operate the ?lm advancing means and said plunger, a connecting rod securedito the movable ?lm gate member and to one arm of said bell crank, said plunger being adapted to op 25 ing a vmovable portion and adapted to hold the ' erate the other arm or said bell crank. ?lm in a ?xed plane while said ?lm is at rest and to release said ?lm from said plane while the ?lm is in motion, a ?lm advancing means, a ?lm gate opening means comprising a bell- crank connected 30 to the movable ?lm gate portion, a ?rst means controlled by said ?lm advancing means for-‘ac tuating said bell crank, a manually controllable cam for operating said bell crank to move the movable ?lm gate portion to open position in dependently of said ?rst means, whereby said gate may be kept open for the insertion and re moval of ?lm without continuously manually holding it open. 8. In a ?lm reading machine, a ?lm gate 40 adapted to hold the ?lm in a ?xed position while the ?lm is at rest, said ?lm gate including a ~ 11. In a ?lm reading machine, ‘a ‘housing, a stationary projection screen and a stationary re ?ecting means'in said housing, a projection head, a source of light and a light projection system in said head, a mounting for said housing per 30 mitting its rotation about an axis substantially parallel to the optical axis of the projection sys- , tem, a ?lm supporting means mounted on said ‘ projection head, a second re?ecting means mounted on said projection head and vforming 35 part of said projection system and rotatable with said head to re?ect the illuminated ?lm image to said stationary re?ecting means regardless oi the orientation of the ?lm. RUPERT ' DRAEGER.