US2213876A - Facsimile recording apparatus - Google Patents

Description

p 3, 1940- c. J. YOUNG FACSIMILE RECORDING APPARATUS Filed Dec. 10, 1938 4 Sheets-Sheet 1 I NV EN TOR. CHA EL 55 J. YOUNG ATTORNEY.

Sept. 3, 1940. c, YOUNG 2,213,876

FACSIMILE RECORDING APPARATUS Filed Dec. 10, 1938 4 Sheets-Sheet 2 F 9/ I l 1 5 94 l INVENTOR. 94 i CHARLES J. YOUNG c By ATTORNEY.

Sept. 3, 1940. c. J. YOUNG FACSIMILE RECORDING APPARATUS Filed Dec. 10, 1938 4 Sheets-Sheet 3 NETWORK TURN OVER TURN OVER NETWORK 33 INVENTOR. CHA RLES J. YOUNG A TTORNE Y.

C. J. YOUNG FACSIMILE RECORDING APPARATUS Filed Dec. I0, 1938 4 Sheets-Sheet 4 WMEIRSQ QQ JIHHHU MHHI I E INVENTOR. CHAR ESJ. YOUNG BY 7%? 4W ATTORNEY.

Sept. 3, 1940.

$2213 92% m m2: m \QGuw Qmkiwavmt uwthmiw mmEESw Patented Sept. 3, 1940 PATEN T I OFFICE FACSMLE RECORDING APPARATUS Charles J. Young. Ardmore, Pia, assignorto Radio Corporation of America, a corporation of Delaware Application December 1938, Serial No. 244,954

24 Claims.

My invention relates in general to devices for recording intelligence, patterns, and the like, and more particularly to a. facsimile recording device whereby such may be recorded on both sides of the material on which the recording is made either simultaneously or at differing intervals.

Various devices for recording facsimiles of intelligence and patterns, and the like, are well known in the art at the present time. These de- 10 vices in general record the language or image or pattern on one side of the material where it may be viewed.

At the present time considerable interest has been evinced in the possibilities of the use of facsimile transmission and reception on a broadcast basis so that up-to-the-minute news, pictures, and such may be brought into the home for the benefit of the public. The cost of the material on which this intelligence is recorded is necessarily a factor to the user. Accordingly, it is one of the objects of my invention to effect a saving in the use of such material whereby the service is less burdensome to the user himself.

Advertising must to a degree at least bear the 25 burden for such a service. It is therefore advantageous to provide an arrangement whereby a service may be maintained in which up to the minute advertising may be used. It has been suggested that advertising might be printed on 0 the back of the material on which the intelligence or pictures or patterns is recorded, but this of course necessitates the printing of this material a considerable time ahead since the material is usually used in rolls of a fair size and is chosen to last a fair amount of time. A number of concerns indulge in advertising of a type that may follow the news of the day as, for instance, where football scores are used as a part of advertising, or where some outstanding accomplishment has been made which has been brought to the attention of the public, and the particular product of the advertising company has been used to a degree which makes it worth while to bring the attention of the "public to this product. Accordingly, it is another of the objects of my invention to provide a device wherein the advertising used may be changed as often as desirable and at the time desired.

As has been brought out hereinbefore, it has of the material on which intelligence is to be recorded. My device contemplates an arrangement whereby the advertising may be transmitted by facsimile methods along with or spaced apart from the intelligence which is transmitted.

been suggested to print advertising on the back Accordingly, it is another of the objects of my invention to provide a system which may be used alternatively to that in which the advertising is previously printed'on the material on which the recording is to be made.

Since it is contemplated to record intelligence on one side of the material and advertising on the other, or to record intelligence on. both sides of the material, it may be desirable at times to record subject-matter substantially simultane- 10 ously, and accordingly it is another of the objects of 'my invention to provide an arrangement whereby simultaneous recording is possible although not necessarily used.

In such recordings as has been hereinbefore set 15 out, the material, it is contemplated, may be cut into individual sheets. Necessarily, then, the intelligence recorded on one side of the material must be properly aligned with that recorded on the other. Accordingly, it is another of the ob- 20 jects of my invention to provide a device in which this is accomplished.

Since many recordings may be used with the aid of material which is deposited on the material on which the recording is to be made, these 5 two materials must be brought into proper cooperative relationship. Accordingly, it is another of the objects of my invention to provide a system wherein the recording material and the material on which the recording is made are accu- 3 rately brought into a cooperative relationship whereby recording on both sides is accomplished.

Such a system as hereinafter set out may be used to record not only intelligence in the form of language, pictures and such but may record patterns. Since the material on which these patterns is recorded may be utilized on both sides thereof, it may become important to study the relative positioning and efiects of one pattern with respect to another. It is therefore another of the objects of my invention to provide an arrangement wherein the effect of definitely positioned patterns may be studied.

Apparatus to accomplish the aforementioned objects should, in order to be most desirable, be

had to Reissue Patent 20,152, as set out hereinthe so-called Young type of facsimile recorder. This apparatus comprises in general a recording drum on which is mounted a helical ridge of elemental width disposed on the outer facepf the drum. Positioned immediately adjacent to and arranged substantially in parallel relationship with the major axis of said drum is a printer bar adapted to be actuated by signals received from a transmitter. The material on which the ree cording is to be made, which is usually paper, is passed between the printer bar and the recording drum; and interposed between the paper and the drum is a material having carbon deposited thereon on the side adjacent the paper. When the drum on which the helical ridge is mounted revolves, a section of elemental area moves progressively across the paper so that if the printer bar is actuated, it comes into a pressing relationship with the helical ridge and leaves an elemental smudge of carbon on the paper. The amount of carbon deposited depends on the pressure exerted by the printer bar against the helical ridge. For. the complete and detailed operation of the recorder per se reference should be before.

In accordance with my invention, either a single recording drum and a plurality of printer bars associated therewith may be used or a plurality of recordingdrums may be utilized. The paper or other material on which the recording is to be made is passed, together with the carbon depositing material, between a single printer bar and its associated drum. Then either the paper or material on which the carbon is deposited is turned through an angle .of 180 with respect to its previous state, and the paper and the material bearing the carbon are then passed between another printer bar and a recording drum so that recording takes place on the opposite side of the material on which the first recording has been made.

My invention will best be understood by reference to the drawings in which:

Fig. l is a recorder drum showing the helix mounted thereon;

Fig. 2 is a representative printer bar and driving means therefor;

Fig. 3 shows one embodiment of my invention;

Fig. 4 shows a device for turning sheet material through an appropriate angle;

Figs. 5 through 13 show alternative forms of my invention: and,

Fig. 14 schematically represents one modification of a comined transmitting and receiving system.

Referring to Fig. I, there is shown the recording drum with the helical section of elementary width mounted thereon. The drum member I0 is shown with a single turn helix ll mounted thereon, the helix in this instance being formed by a wire fastened into a channel or trough cut in the face of the drum, said wire projecting above thc outer face of the drum. The drum is mounted on a shaft l2 to which may be joined a pulley member l3. It will be appreciated, of course, that this is merely exemplary of one type of driving means for the drum and, of course, any appropriate type well known in the art can be used. 'In this illustration, the material on which the intelligence is to be recorded may have perforations along the edges thereof to fit into the sprocket teeth M of a support member l5 which is maintained in synchronous relationship with the advance of the seaming means at the transmitter, and moves the paper forward the equivalent of one line for every line of scanning at the transmitter. Positioned immediately adjacent the drum member is the printer bar It, and a reference to the figure will show that as the drum I0 rotates and the printer bar It remains fixed,

a linear movement of an elemental section takes place with respect to'the printer bar, that is to say, if the bar be actuated at any particular instant, it will strike the helix wire at some point determined by the phase relation of the drum ill at that particular instant with respect to the end of the helix. The complete operation is disclosed fully in U. S. Reissue Patent 20,152 hereinbefore referred to.

Referring to Fig. 2, there is shown an exemplary arrangement of the printer bar and the means for actuating it. The-printer bar It has two armatures H and !8 connected thereto and these armatures pass through the serially connected coils l9 and 20, these coils being mounted so as to be in cooperative relationship with magnets 2l and 22. There are two sets of pole faces 23 and 24 so that currents impressed on the coils through the leads 25 move the armatures l1 and I8 with a force determinable by well known electrical formulae, and the depth or intensity of carbon deposited depends upon the force with which the printer bar I6, whose relationship to the recording drum is shown more clearly in Fig. 1 is actuated.

Referring to Fig. 3, there is shown one embodiment of my invention. In this embodiment, there are two recording drums 40- and M having printer bars 42 and 43 respectively, positioned so as to cooperate with the helix on each of these printer drums to record a transmitted facsimile. The material 44 on which the facsimile is to be recorded and which, in this instance. is'a planar sheet material, is passed between the printer bar 43 and the recording drum 4|, and thence upwardly between recording drum 40 and printer bar 42, and upwardly through pulling rollers 46. The material, by means of which the recording is to be done in this instance, is carbon paper, as also suggested by my patent abovenamed. The paper from the roll 41 is passed across guide roller 48 and between the paper 44 and the recording drum 40 so that the side on which the carbonaceous or hectographic material is deposited on the carbon paper is adjacent the paper material 44. The carbon paper passes downwardly across rollers 48, 49 and 50 which are positioned exteriorly of the roll of paper 44, and the carbon paper then passes upwardly across guide roller 45 between the recording drum 4| and the paper 44, this time in a position such that the copying carbon material is again adjacent the paper material 44 but this time on the opposite side thereof. In other words, the carbon paper has efiectively been turned through an angle of 180 with respect to the paper material, and also has been placed in a position so as to deposit the carbonaceous or other copying material upon the opposite face thereof from the first deposit. The carbon paper is then rolled, as illustrated, on take-up roll 5|.

The action of the device is as follows: This device may work in one of several ways. The two recording drums 40 and 4| with their associated printer bars 42 and 43 respectively may be energized and thus work from the signals of two different transmitters. On the other hand, if it be arranged that one of the drums remains stationary and sufficient material is allowed to form a loop and the second of the drums is fed from this reserve loop of material after the first drum has made a complete recording, then naturally the printer bar adjacent the second drum might be actuated by signals from the same transmitter as the printer bar adjacent the first drum. The sheet material in this illustration passes between two printer bars, and their associated drums. and is arranged in one instance such that the face of the carbon paper that leaves the elemental deposit of carbon is adjacent one side thereof 01', in the case of plane material, one face thereof, and in the other instance such that the deposited side of the carbon paper is arranged adjacent the opposite face thereof.

Referring to Fig. 4, there is shown one type of device by which the progressive movement of a sheet of material may be insured and at the same time turn the paper 180 with respect to the position in which it enters the device. This may be done without folding or otherwise creasing the surface of the paper in any manner whatsoever. It may be assumed that the movement of the paper to be as indicated by the arrow and the position of one face A of the paper is indicated in several different positions. The paper passes across a rolle1 member 30 to another roller member 3|, the latter being positioned at an acute angle with respect to the roller 30. The paper then passes at an angle, which as illustrated here is 90 to its previous position. The paper then passes around a roller 32 and thence around a roller 33 which is placed at an acute angle to the roller 30, in this case opposite to that of the roller 3|. The paper then passes across a roller 34 and hence the progressive. movement is continued. I

It will be seen that the face A of the paper is facing outwardly and as it crosses the roller 30, the face A is upward. After bending around the roller 3|, the face A is downward, and upon leaving the roller 32 the face A is upward again,

but after leaving the rollers 33 and 34 the face A is downward, and as it passes downwardly from the roller 34 the face A is inward, which is 180' from the position as it entered the device. For purposes of simplicity, this arrangement will be termed hereinafter as a turnover network.

Referring to Fig. 5, there is shown an alternative form of my arrangement. Herein there is used a single recording drum 60 having two printer bars BI and 62 respectivelycooperating therewith. These printer bars in this illustration are located on a diametric line through the drum. The paper roll is identified as W, and the carbon roll is identified as C, both the feed roll and the take-up roll being shown. The paper 63 passes from the roll W across a roller 64, and thence between The drum 60 and the printer bar 6| where it feeds to another roller 65 and then passes upwardly and substantially embraces in its travel the roll of paper by means of the rollers 66 as illustrated. The paper then passes between the recording drum 60 and theprinter bar 62, and thence over rollers 61 and feed rollers 68. The carbon paper feeds from the roll C between recording drum 60 and the printer bar 6| with the face of the carbon adjacent the paper 63 and thence is fed across rollers 69 so that it substantially embraces the drum 60 and is then passed between the drum 60 and the printer bar 62 to the wind-up roll. An examination of the traversal of the carbon will show that with respect to the paper it has been turned 18 0 and at one in stance is adapted to record on the side of the paper opposite to that on which it records during the other instance.

In general, it has been found that the most feasible arrangement is to utilize a 180 spiral so that when one of the presser bars has completed one line of the image, the spiral is in the correct position for the other presser bar to begin recording a single line of the image which is being transmitted thereto.

Referring to Fig. 6, there is shown an arrangement which is very similar to what which is disclosed in Fig. 5. In this instance, the recorder drum III has two printer bars II and I2 positioned immediately adjacent each other. The paper I3 feeds from the roll W between the recorder drum I0 and the printer bar II, thence around rollers I4, and thence between the drum l0 and the printer bar I2 through the drive rollers 15. The carbon paper then passes from the roll C over the guide roller I6, thence between the recording drum I0 and both printer bars 'II and I2, and then to the pick-up reel C.

Referring to Fig. 7, there is shown an arrangement wherein two recording drums 80 and 8| have printer bars 82, 83 positioned adjacent thereto and in cooperative relationship therewith. The paper feedsfrom the roll W between the recording drum 80 and the printer bar 82 and thence over rollers 84 between recording drum 8| and printer bar 83, and thence through feed rollers 85. The carbon paper feeds from the roll C across the guide roller 86, and then between the recording drum 8| and printer bar 83 and the recording drum 80 and printer bar 82, and is taken up by the pick-up reel C.

Referring to Fig. 8, there is shown an arrange? ment wherein the paper roll for purposes of convenience is located outside the path of travel of the paper in going from one printer bar to the other, and in this arrangement a single recorder drum is used. The recorder drum 90 has positioned immediately adjacent thereto and in cooperative relationship therewith printer bars 9| and 92. The paper roll W is so arranged that the paper is fed along a path at right angles to its normal path past the-recording drum. The paper leaves the roll W and passes through a turning network 93 which changes the path of travel of the paper as outlined above. Or, in

other words, the paper is bent at right angles to the arrow shown. This arrangement then follows the arrangement disclosed in Fig. 5, the paper being fed over rollers 94 and through feed rollers 95. The carbon paper leaves the reel C, passes between printer bars 92 and 9|, having been fed across rollers 96 and is taken up by the take-up reel 0'.

Referring to Fig. 9, there is shown an arrangement somewhat similar to that disclosed in Fig. 6 but where, as in Fig. 8, the paper is outside of the path of travel past the recording drum and also in this figure the single drum with two printer bars positioned adjacent each other is used. The paper from the roll W feeds to a turning network I00 which turns the paper 90 to the path by which it travels in approaching the printer bars. This enables the paper roll to be mounted outside of the section devoted to turning the materials relatively to each other. The paper is then fed between recording drum I 0| and printer bar I92, thence around rollers I 03 and back between printer bar I04 and the recording drum, and thence to feed rollers I05. The carbon paper is fed from the roll C over roller I06 between both printer bars and the recording drum, and thence over the other guide roller I06 to the take-up reel C.

There is shown in Fig. 10 anoth-r arrangement whereby the paper reel may be located outside of the section at which the turning of the material takes place. The paper from the roll W is fed over roller I I0 between recording drum III and printer bar II2. It then passes into a turnover network as labeled, and thence between recordingdrum H3 and printer bar H4, and passes through feed rollers H5. The carbon paper is fed from the roll C over guide rollers II6, thence between recording drum II3 and printer bar H4 and through appropriate guide means between recording drum III and printer bar H2, and thence over rollers II1 to the take-up reel 0'.

Fig. 11 shows an arrangement somewhat similar to Fig. 10 wherein a single recorder drum is used and a pair of printer bars diametrically placed in cooperative relationship therewith. Paper from the roll W passes between the recording drum I 20 and printer bar I2 I, and thence through a turnover network which is labeled as such, and thence between recording drum I20 and printer bar I22 and from there through'feed rollers I23. The carbon paper is fed from the roll C between the recording drum I20 and the printer bar I2I, thence around guide rollers I24 and from there between the recording drum and printer bar I22 where it is taken by the take-up reel C.

Referring to Fig. 12, there is shown another formof my invention. Paper from the roll W is fed by appropriate guide means between recording drum I30 and printer bar I3I, then passes around roller I 32 and is fed back between the recording drum and printer bar I33 which is positioned diametrically opposite to printer bar I3I. The paper is then fed through feed rollers I34. In this figure, the carbon passes from. the roll C between the printer bar I3I and the paper, and'thence to a turnover network which is labeled as such, and from there between the paper and the recording drum I30 where is passes across appropriate guide rollers I35 to the take-up reel 0'.

Referring to Fig. 13, there is shown a still further embodiment of my idea in which two recording drums are used whose axes are parallel and the printer bars are located on opposing sides thereof. Paper from the roll W passes between recording drum I40 and printer bar I3I, and thence between recording drum I42 and printer bar I43 to feed rollers I44. Carbon paper from the roll C passes between printer bar MI and the paper, and is then passed around appropriate guides I45 and thence between printer bar I43 and the paper, and from there to takeup reel C. It will be noted that the path of the carbon paper substantially embraces the roll of paper W.

Referring to Fig. 14, there is shown a complete system using a dual scanning arrangement, one

of the scanning arrangements being adapted to generate signals which when received are used to reconstruct an image on one side of the sheet and the other of the scanning arrangements being adapted to generate signals which when received reproduce a second image on the back of the sheet. In this case, a scanning drum I50 driven by appropriate gears I5I and I52 by means of a prime mover I53 here illustrated as a motor has wound about its periphery a sheet I54 containing an optical image, the facsimile of which is to be reproduced. A light source I55 is projected through an appropriate lens system I56 and impinges upon the sheet I54, and the reflected light values are translated into electrical values by means of photoelectric means I51. A second scanning dr'um I60 is driven through appropriate gear means I6I and I62 by means of prime mover I63. Wound about the periphery of the drum is an optical image representation I64 and light from a light source I65 impinges onto the image through an appropriate lens system I66 and a photoelectric element I61 translates the reflected light value into electrical values.

The photoelectric means I51 has its output fed into an amplifier I10 which feeds into a transmitter I1I through a switch member I12, the arms of the switch being joined to a member I13 which is held by springs or other appropriate means against the, periphery of a cam I14, the latter being joined through appropriate gear meansl15 and I16 to the scanner drum I50.

Similarly, the output from photoelectric means I51 is fed into an amplifier I11 and thence to the same transmitter I'II as was the amplifier I10. Also in this case, there is interposed in the output circuit of the amplifier switching means I18 which are controlled by an arm I19 which is held by spring means or other appropriate means against the face of a cam I which is joined through appropriate gear means I8I and I82 to the scanner drum I60.

It will be noted that the two cams I14 and I80 are complementary in shape, that is, each is a 180 cam or, expressed in other words, 180 of the outer periphery of 'ihe cam is cut with one radius of curvature and the other 180 is cut with a different radius of curvature.

The output from the transmitter I" is transmitted appropriately by wire or radiant energy to the receiver I90. This receiver is fed to windings I9I and I92 respectively, these windings being connected in parallel and being separated by a switch means I93. This latter switch is a single-throw double-pull switch, and the arm is joined to a member I94 which is held by spring means or other appropriate means against the face of a cam I95 which is connected through appropriate means to the driving motor of the receiver.

The winding I9I is adapted to actuate a presser bar I96 which is positioned immediately adjacent a receiver drum I91 having a single turn spiral I98 on the face thereof.

The winding I92 actuates a presser bar I99 which is positioned from the position of presser bar I96.

The action of the apparatus is as follows: Signals developed from the optical image on the scanner drum I50 are passed to the transmitter only during the time when the face of the cam I14 having the greatest radius of curvature contacts the arm I13, and hence the switch member I12 throws this amplifier into the circuit, and signals are passed to the transmitter.

It will be noted that the action of the cam I 30 is the same with respect to scanner drum I50. However, the cams are positioned so that when the switch I12 is closed by cam I14, the switch I18 remains open due to the action of cam I80. This means then that alternate lines or sections are transmitted from the two scanning drums.

The windings I9I and I92 are arranged so as to be alternately energized by signals from the receiver I90 through the switch I93 which alternately closes and opens the circuit to these windings in accordance with the position of cam I95. As the receiver and transmitter are operated in a synchronous relationship, the cam I95 will close the circuit of one of the windings during the time when signals are being received from one of the transmitters, and it will deliver signals to the other of said windings when signals are being received from the other of said scanners.

For purposes of clarity, the carbon paper has not here been illustrated, but the position of the paper as it passes between the presser bar and the recording drum has been illustrated in each case. The faces of the paper have been marked A and "B" so as to bring out the fact that the paper has one relationship to the recorder when it passes between one presser bar and the recorder and there is a 180 change with respect to recording as it passes again between the second presser bar and the recording drum.

The arrangement might be worked in a different manner, and without the use of the switch and cam arrangement at the receiver as illustrated by a change in the recording drum per so. If a 180 spiral is used on the recording drum rather than a 360 spiral and the apparatus is operated in synchronism with the transmitting drums in such fashion that the beginning and ending of the spiral pass the presser bar during the time that one of the scanning drums transmits a single line of the image, then the two windings I9I and I92 may be connected in parallel, and since the action of a presser bar which has no spiral adjacent to it has no recording effect, the windings may be connected directly in parallel and both presser bars will be simultaneously actuated with the signals received, but one presser bar will not record until the 180 spiral becomes adjacent to it. Hence, a commutation is accomplished by the use of the 180 spiral.

Similarly, a scanning drum having two pictures on the periphery thereof might be used to transmit alternate lines of a single image. The recording drum with a 180 spiral thereon may be operated in synchronism. On the other hand, such a scanning drum might be used and two separate recording drums alternately energized by the transmitted signals might be used cooperatively. .In this case, the scanning drum should be opcrated at half speed.

It will be noted that for purposes of simplicity and convenience of arrangement and showing that two driving motors have been shown, both of which, are operated from the same source of energy.. It will be appreciated, of course, that a single driving motor might be used to drive the scanning drums in synchronous relationship and, as a matter of fact, it would be entirely possible to mount the surrounding drums of the same shaft. At any rate, appro riate gearing may be used from the driving means to operate both the scanning drums I50 and ISO in synchronous relationship. The motors I53 and I63 are preferably synchronous motors, synchronism being most easily maintained by this arrangement.

Also for purposes of simplicity, the output from the photocells I51 and I6! has not been shown, but it will be appreciated these outputs going to amplifiers I10 and I'll respectively enter the input stage of each amplifier.

It will be appreciated that there may be departures from the specifimmeans shown, but I feel that I am entitled to all of the departures and modifications which fall fairly within the scope of my invention as shown in the appended claims.

What I claim is:

1. In a printing apparatus using sheet material for the reception of characters comprising two planar surfaces rev ersed with respect to each other, a recording material, and a drum with associated force exerting means for bringing the material into printing relationship with the drum, the method of printing substantially simultaneously on both planar surfaces of the material comprising passing the receptive material and recording material simultaneously over an elemental width strip of the drum between the drum and the force exerting means, applying force simultaneously to the recording and receptive material and sequentially along a linear section thereof, then moving the receptive material and recording material along separate paths to change the position of contact area of the receptive material and the recording material relative to each other so that the opposite face of the receptive material is in contact with the recording material, and then again passing the receptive material and the recording material simultaneously over an elemental width strip of the drum and between the drum and the pressure means, whereby recordings are produced on both sides of the receptive material. 2. In a printing apparatus for recording on receptive material consisting of two plane surfaces forming a sheet, in conjunction with a drum, sheet recording material and means for exerting pressure for bringing the receptive ma;- terial and recording material into recording relationship with the drum, the method of recording on both plane surfaces of the receptive material which comprises passing the receptive material and recording material tangentially to the drum at the pressure exerting means, apply ing force simultaneously to the recording and receptive material and sequentially along a linear section thereof, then moving the receptive material and recording material along separate paths to change the position of the first plane of contact of the receptive material with the recording material by 180 with respect to the recording material, said movement being accomplished by a series of steps in which each step changes the relative position of the aforementioned plane of the receptive material with respect to the recording material by a predetermined degree.

3. An apparatus for recording intelligence on receptive material consisting of two planar surfaces forming a sheet,*comprising a drum, means for pressing each surface of the receptive material tangentially against an elemental area of the drum, recording material, means for feeding each plane of the receptive material between the pressure exerting means and the drum, means for feeding the recording material between the pressure exerting means and the drum in parallel relationship to the receptive material, and means for changing the position of the first plane of contact of the receptive sheet with respect to the recording material by an angle of 180.

4. An apparatus for recording intelligence on receptive material consisting of two planar surfaces forming a sheet, comprising a drum, means for pressing each surface of the receptive material tangentially against an elemental area of the drum, recording material, means for feeding each plane of the receptive material between the pressure exerting means and the drum, means ter means comprising a series of for feeding the recording material between the pressure exerting means and the drum in parallel relationship to the receptive material, and means for changing the position of the first plane of contact of the receptive sheet with respect to the recording material by an angle of 180, said latter means comprising a series of supporting members, each member being positioned so .as to change the above mentioned angle by a predetermined number of degrees.

5. An apparatus for recording intelligence on receptive material consisting of two planar surfaces forming a sheet, comprising a drum, means for pressing each plane surface of the receptive material tangentially against an elemental area of the drum, said means comprising bar means arranged to act cooperatively with said drum, said drum having a ridged spiral joined to the periphery thereof, means for feeding each plane of the receptive material between the pressure exerting bar means and the drum face, recording material, means for feeding the recording material between the pressure exerting means and the drum in parallel relationship to the receptive material, and means for changing the position of the first plane of contact of the receptive sheet with the recording material with respect to the recording material by an angle of 180.

6. An apparatus for recording intelligence on receptive material consisting of two planar surfaces forming a sheet, comprising a drum, means for pressing each plane surface of the receptive material tangentially against an elemental area of the drum, said means comprising bar means arranged to act cooperatively with said drum, said drum having a ridged spiral joined to the periphery thereof, means for feeding each plane of the receptive material between the pressure exerting bar means and the drum face, recording material, means for feeding the recording material between the pressure exerting means and the drum in parallel relationship to the receptive material, and means for changing the position of the first plane of contact of the receptive sheet with the recording material with respect to the recording material by an angle of 180, said latsupport n members, each member being positioned so as to change the above mentioned angle by a predetermined number of degrees.

7. An apparatus for recording intelligence on receptive material consisting of two planar surfaces forming a sheet, comprising a drum, means for pressing each plane surface of the receptive material tangentially against an elemental area of the drum, said means comprising electrically actuated bar means arranged to act cooperatively with said drum, said drum having a ridged spiral joined to the periphery thereof, means for feeding each plane of the receptive material between the pressure exerting bar means and the drum face, recording material, means for feeding the recording material between the pressure exerting means and the drum in parallel relationship to the receptive material, and means for changing the position of the first plane of contact of the receptive sheet with the recording material with respect to the recording material by an angle of 180.

8. An apparatus for recording intelligence on receptive material consisting of two planar surfaces forming a sheet, comprising a drum, means for pressing each plane surface of the receptive material tangentially against an elemental area of the drum, said means comprising electrically actuated bar means arranged to act cooperatively with said drum, said drum having a ridged spiral joined to the periphery thereof, means for feeding each plane of the receptive material between the pressure exerting bar means and the drum face, recording material, means for feeding the recording material between the pressure exerting means and the drum in parallel relationship to the receptive material, and means for changing the position of the first plane of contact of the receptive sheet with the recording material with respect to the recording material by an angle of 180, said latter means comprising a series of supporting members, each member being positioned so as to change the above mentioned angle by a predetermined number of degrees.

9. An intelligence recording device comprising a sheet upon which the intelligence is to be recorded, a recording drum, means for drawing the said sheet tangentially across the drum to provide effectively at least two lines of tangency, means for pressing the sheet upon which the intelligenceis to be recorded against the drum at selected points along each path of tangency, and means for reversing the surface of contact of the sheet upon the drum from one side to the other in the time interval during which the sheet is drawn across th drum to provide two lines of tangency thereto.

10. An intelligence recording device comprising a sheet upon which the intelligence is to be recorded, a recording drum, means for drawing the said sheet tangentially across the drum to provide effectively at least two lines of tangency. means for pressing thesheet upon which the intelligence is to be recorded against the drum at selected points along each path of tangency, said latter means comprising bar means adapted to work 00'- operatively with a spiral surface of elemental.

said sheet tangentially across the drum to provide effectively at least two lines of tangency, means for pressing the sheet upon which the intelligence is to be recorded against the drum at selected points along eachpath of tangency, said latter means comprising electrically actuated bar means adapted to work cooperatively with a spiral surface of elemental width superimposed around the periphery of the drum and raised therefrom, and means for reversing the surface of contact of the sheet upon the drum from one side to the other in the time interval during which the sheet is drawn across the drum to provide two lines of tangency thereto.

12. An intelligence recording device comprising a sheet upon which the intelligence is to be re- 7 supporting members arranged to progressively change the angular relationship between the first plane of contact of the recording material with the receptive material until a total change of 180 has been accomplished.

13. An intelligence recording device comprising a sheet material upon which the intelligenceis to be recorded,'a recording drum, means for drawing the receptive sheet tangentially across the drum twice at substantially the same line of tangency, means for pressing the sheet upon which the intelligence is to, be recorded against the drum at selected points along substantially asingle line of tangency, and means for reversing the surface of contact of the sheet upon the drum in the time interval in which any portion of the sheet along its axis becomes tangent to the drum twice, and a pair of presser members positioned adjacent each other for focusing the sheet material against the recording drum at substantially the same line of tangency.

14. An intelligence recording device comprising a sheet material upon which the intelligence is to be recorded, a recording drum, a colored recording material, means for drawing the receptive sheet tangentially across the drum twice at the same line of tangency, means for drawing the recording material twice across the drum at the same line of tangency as that of the receptive material, means for pressing the recording material and receptive sheet against the drum at selected points along the single line of tangen'cy, and means for reversing the surface of contact of the sheet upon the drum in the time interval in-which any portion of the sheet along its axis becomes tangent to the drum twice.

15. An intelligence recording device comprising a sheet material upon which the intelligence is to be recorded, a recording drum, a colored recording material, means for drawing the receptive sheet tangentially across the drum twice at the same line of tangency, means for drawing the recording material twice across the drum at the same line of tangency as that of the receptive material, means for pressing the recording material and receptive sheet against the drum at selected points along the single line of tangency, means comprising an electrically actuated bar positioned substantially parallel to the drum axis acting cooperatively with a surface of elemental width superimposed spirally around the drum face, and

means for reversing the surface of contact of the sheet upon the drum in the time interval in which any portion of the sheet along its axis becomes tangent to the drum twice.

18. A facsimile system comprising means for scanning a plurality of optical images, a plurality of facsimile reproducing devices, means for transmitting alternately a single line of said plurality of images and means for energizing said reproducing devices by said transmitted signals.

1'7. A facsimilesystem comprising means for simultaneously scanning a plurality of optical images, a plurality of facsimile reproducing devices, a planar medium for reproducing facsimile images of the scanned optical images, means for transmitting said signals developed by scanning, means for actuating each of said recorders from the transmitted signals of a single image, and

means for controlling said medium whereby reproduction of the completed images is accomplished on both planar faces thereof substantially simultaneously.

18. A facsimile system comprising means for simultaneously scanning a plurality of optical images, a single reproducing drum having a single turn spiral on the face thereof, a plurality of presser bars positioned adjacent said reproducing drum, a planar medium for receiving said reproduced facsimiles, means for transmitting said signals developed by scanning, means for actuating said pressers alternately, each of said presser bars being energized by the signalsfrom one of said scanners, and means for controlling the medium on which the facsimile is reproduced whereby reproduction of separate images is accomplishedon both plane faces thereof substantially' simultaneously.

19. Apparatus in accordance with claim 17 and wherein switching means are provided at the receiver for alternately energizing the reproducing devices. 1

20. Apparatus in accordance with claim 18 and wherein switching means are provided at the receiver for alternately energizing said presser bars.

21. A facsimile system comprising means for simultaneously scanning a plurality of optical images, a single reproducing member having a 180 spiral mounted thereon, a plurality of presser bars positioned adjacent said reproducing drum, a recording strip medium for receiving said reproduced facsimiles, means for transmitting said signals developed by scanning, means for actuating said pressers, each of said presser bars being energized by the signals from one of said scanners, and means fo: positioning the medium. on which the facsimile is reproduced whereby reproduction of separate images is accomplished on each surface thereof substantially simultaneously.

22. A facsimile system comprising means for simultaneously scanning a plurality of optical images, a single reproducing drum having a single turn spiral on the face thereof, a pair of presser bars positioned adjacent said drum and separated 180 apart from each other, a recording strip medium for receiving said reproduced facsimiles, means for transmitting said signals developed by scanning, means for actuating said pressers alternately, each of said presser bars being energized by the signals from one of said scanners, and means for positioning the medium on which the facsimile is reproduced whereby reproduction of separate images is accomplished on each surface thereof substantially simultaneously.

23. A facsimile system comprising means for scanning a plurality of optical images, a plurality of facsimile reproducing devices, means for transmitting signals representative of the scansion values, a receptive material for use with said reproducing devices and having two planar faces, and means for reproducing said optical images simultaneously on both of the planar faces of said receptive material.

24. Apparatus in accordance with claim 23 wherein said facsimile reproducing devices include a drum having a 180 ridged spiral on the periphery thereof and a pair of presser bars operatively associated therewith and guided by said received signals for forcing the receptive material into contact with said drum, said presser bars being positioned 180 apart around the periphery of the drum.

CHARLES J. YOUNG.

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