US1819197A - Photoradioscope - Google Patents

Description

Aug. 18, 1931. R. H. RANGER PHOTORADIOSGOPE 19 I; lNV NTOR PMH. RANGER /.'L jf 7, /J/MM AW ORNEY Original Filed Jan.

Patented Aug. 18, 1931 UNITED STATES PATENT OFFICE RICHARD ROWLAND RANGER, OI NEWARK, NEW JERSEY, ASSIGNOZR TO RADIO COR- PORATION 0F AKERIGA, A CORPORATION OF DELAWARE PHOTORADIOSCOPE Application filed January 9, 1928, Serial No. 245,849. Renewed April 5, 1930.

My invention relates to the reproduction of pictures and the like transmitted from a remote point by radio or wire, and particularly to the method and ap aratus for displaying the pictures as pro uced.

An object of my invention is to provide an arrangement for displaying radio or wire pictures as they are produced and particularly adapted to enable an onlooker to continuously watch a picture received over radio or wire transmitting and receiving systems as it is being developed or reproduced.

Another object of my invention is to provide an arrangement useful for advertising purposes for displaying pictures as produced in accordance with radio or wire impulses actuating a reproducer for rebuilding the picture or facsimile at a remote point from the transmitter.

Another object of my invention is to provide a photoradioscope in the form of a display rack for pictures in which the picture recording surface is advanced with respect to a recorder in accordance with the rate of building up the picture.

Other objects of my invention are to produce in a manner hereinafter set forth a photoradioscope which is simple in its construction and arrangement, durable, compact, efficient, conveniently operated, readily set up, and inexpensive to install, as well as other objects which will be apparent from a reading of the specification when considered together with the accompanying drawings which form a part of my specification.

My invention in one of its preferred forms is illustrated by the accompanying drawings,

- wherein Fig. 1 is an assembly drawing of one embodiment of the photoradioscope in accordfor-moving the recording surface with respect to the recording means. To now make reference to the accompanying drawings, the same comprises a picture reproducing machine and a display rack which I have termed a photoradioscope attached thereto, although it is within the scope of the invention to arrange the display apparatus entirely separate from the reproducing machine. A paper of a suitable character for recording the picture impulses as received is passed through the photoradioscopcand is periodically advanced with re spect to a recording means, so that an audience looking at the arrangement may follow the progress of building up the picture in its separate line for line passages, so as to finally form a finished picture.

For originall transmitting the pictures an arrangement 0 any known description may be used, although I prefer to utilize arrangements of the general character disclosed by my copending application, Serial Numbers 695,175; 726,235; and 101,611, filed February 26th, 1924; July 16th, 1924; and April 13th, 1926, respectively. Synchronizers of any desired types may be used for coordinating the speeds of the moving elements at the transmitter and receiver. 7

The picture reproducing arrangement may, if desired, be of a similar nature to that which has been disclosed in my copending application, Serial Number 128,720, filed August 12th, 1926, in which a heat sensitive paper was mounted upon a drum or cylinder across which a heated air jet was passed, and in which the heat was periodically dissipated by the action of a cold air jet governed in accordance with received signal impulses, which were proportional to the various color intensities of the picture being transmitted.

In accordance with a preferred embodi- -ment of my invention, such as has been illustrated for the purpose of showing a concrete example of the present machine, I have chosen to reciprocate acarriage 1, which may be of the character disclosed in the above referred to copending application, Serial No. 128,720, by means of a rotating shaft 3 which I have termed a cam shaft. The shaft 3 is provided with an endless reversed spiral cam slot 5 cut therein and a pin (not shown) extending downwardly from the carriage 1 is arranged to slide therein to produce a motion or travel of the cariage 1 back and forth longitudinally of the rotary shaft. 3.

The carriage 1 preferably includes a pair of air jets 7 and 9 which I will hereinafter term hot air jet 7 and cold air jet 9. Air from an external source (not shown) is directed to the air jets 7 and 9 through a tube 11. The airjet 7 is provided with a heating coil 13 which warms the air passing through the jet at all times. The air from the hot air jet 7 is projected outwardly through a nozzle 15 toward a cylinder 19 carrying a recording medium 21 which is preferably of the character sensitive to the application of heat so that it may be influenced by the hot air from jet 7 bearing the nozzle 15. The air in the jet 9 is directed from a nozzle 17 in a direction which crosses the path of the hot air issuing from nozzle 15 and dissipates the same in accordance with received signal impulses which control through electromagnetic means (not shown) the cold air passing through the jet 9, as has been disclosed by my copending application Serial No. 128,720, and also by my copending application Serial No. 245,350, filed Jan. 9 1929.

The rotary cam shaft 3 and the cylinder 19 for carrying the recording surface 21 are supported at their ends in any desired manner by means of end supports 23 and 25, and carried by the end support 25 in any desired manner in an appropriate form of gear train (not shown) for driving the cam shaft 3 at any predetermined and desirable speed from a motor (not shown). Directly beneath the cam shaft 3 is a long spindle 27, also carried at its ends by the supports 23 and 25, for guiding the carriage 1 in its longitudinal 'motion on the cam shaft 3 by means of pins 29 extending downwardly from the carriage 1 and arranged to ride on either side of the spindle 27. The pins 29 prevent the carriage from turning as the shaft 3 is rotated and cause the carriage to assume the above referred to longitudinal motion back and forth in both left to right and right to left directions of the cam shaft 3.

Carried by the end supports 23 and 25 are upright support members 31 and 33 which extend for a considerable distance above the carriage 1 and cylinder 19. These upright supports 31 and 33 are braced in any desired manner by suitable cross braces and angular braces attached as shown by the drawings. At the upper ends of the uprights 31 and 33 is a roller 35 over which the recording medium 21 is arranged to pass after being advanced, in a manner to be hereinafter described, from the recording cylinder 19. For the purpose of tightly holding the recording surface on the roller 35 a small clamping roller 37 is also provided and held by means of a clamp 39 tightly against the roller 35. Associated with the cylinder 19 and arranged similarly to the clamp roller 37 with respect to the roller 35 is a roller 41 arranged tightly against the cylinder 19 and providing a tight drive for the paper or recording medium 21.

To now make reference to the means for advancing the recording surface 21 with respect to the cylinder 19 at the end of each longitudinal motion of the carriage 1 carrying the air jets 7 and 9 along the cam shaft 3 I have provided a clutch mechanism, generally designated 43.

The clutch portion 43 is formed of two halves 45 and 47 which are forced together by means of a spring 49 carried about a threaded spindle 51 supported from the end support 23 of the frame. The tension of the spring 49 bearing against the clutch portion 47 is adjusted by means of an adjustable nut 53 carried by the threaded spindle 51. The portion 45 of the clutch, generally designated 43, has one or more pins 55 carried on its periphery, for a purpose to be hereinafter set forth.

Also, formed as a part of the clutch portion 45 is a worm wheel 57 for the purpose of driving a large pinion 59 which operates through any preferred form of gear mechanism, generally designated 61, to turn the cylinder 19 at predetermined time intervals by a rotation of the worm 57. The other end 63 of the worm 57 is formed similarly to the clutch portion 45 except that it has no pins extending from the periphery thereof. This portion 63 rests upon and rotates through frictional engagement 3. large collar 65 which is carried securely on a spindle 67 which ex-,

tends through the inside of the worm 57, the clutch portions 45 and 47, and the threaded spindle 51 and is securely fastened to the threaded spindle 51 in a collar or internally threaded nut 69. The spindle 67 is rotating at all times and derives its motion from a gear mechanism, generally designated 71, which is turned by any desired prime mover (not shown) and is, therefore, at all times rotating the threaded spindle 51 and the clutch portion 47 rigidl fastened thereto by any preferred form 0 clamping mechanism such as a set screw. It is thus seen that from motion derived through the turning of the spindle 67 the clutch portion 47 will tend to turn the portion 45 and thus rotate the worm 57 and its associated pinion 59 and gear mechanism 61 by means of a friction drive such as is derived from the pressure of the spring 59 upon the clutch portion 47 if no means is provided for preventing this frictional drive and, therefore, the recording surface or medium 21 would be advanced at all times through a rotation of the cylinder 19 forming a frictional drive with the clamping roller 41. I have, therefore, provided means for interrupting this motion so that the motion of the recording surface ma only take place at eriods when the carnage 1 carrying the air ets 7 and 9 has reached each end of its longitudinal motion with respect to the cam shaft 3 and this briefly includes a trip mechanism, generally designated 73, y

The trip mechanism includes a spindle 7 5 extending longitudinally of the rotary cam shaft 3 and the cylinder 19 and supported by the end supports 23 and 25. About the spindle 75 a U-shaped pro ect1on on thecarriage 1 is arranged to slide freely. At either end of the spindle 75 I have arranged and rigidly fixed collars 77 which, due to the engagement of the U-shaped projections, move the spindle 75 in one direction or the other as the carriage 1 reaches one or the other end of its longitudinal motion on the rotary cam shaft 3. The end of the spindle 73 is formed in a recessed or opposed V construction 79 and in this portion a roller 81 carried by the trip mechanlsm 73 is adapted to rest. As the spindle 75 is moved in one or the other dlrection the roller will be moved to the left (looking at Fig. 2) by reason'of the fact that 1t is starting at the center of the opposed V- shaped grooves in the spindle 75 an moved to ride on the spreading portion of the V asthe spindle is moved in one or the other direction. The yoke 83 is pivotally mounted through the end support 23 and at its end toward the cylinder 19 a spring 85 is provided for holding the yoke 83 in a position toward the spindle 75 so that the roller 81 which is carried by the yoke 83 will be in engagement with the V portion of the said spindle 75. Mounted on supports 87 and 89 on the yoke 83 are two extending pins 91 and 93 upon which the pins 55 extending outwardly from the periphery of the clutch portion are adapted to catch and thus prevent rotation of the clutch portion 45, even though the portion 47 is tending by the frictional drive to rotate the same. As the spindle 75 moves in and out due to a motion of the carriage 1 back and forth longitudinally of the rotary cam shaft 3, the roller 87 will move the trip mechanism 73 to the left against the action of the spring and the pin will be released from the extending pin 91 carried by the support 87 of the yoke 83 so as to permit the clutch portion 45 to rotate freely with the clutch portion 47 until the pin 55 has turned sufficiently to come in contact with the extending pin 93 carried by the yoke 83, which in the case of only a single pin on the clutch portion 45, will be a complete turn, and for more pins a proportionate amount, and then as the roller 81 again moves to the center of the V- shaped recess on the spindle the pin 55 will slip from the extending pin 93 and come against the pin 91. As the motion of the spindle 75 is repeated the pin will slip and again permit the turn 47 of the clutch to drive the portion 45. It is readily seen that, as this happens at each stroke of the carriage 1, the worm 57 will be turned a certain amount and consequently the cylinder 19 proportionatel rotated so as to advance the record:

ing sur ace 21 with respect thereto.

Also, driven from the gear mechanism 61 is an upright spindle 95 which is at all times turning similarly to the spindle 67 extending through the clutch 43. This spindle 95 drives a shaft 97 through any appropriate type of universal joint 99 and the shaft or spindle 97 extends upwardly along the upright support31 to the top portion thereof where a second universal joint 101 drives a short spindle 103 to rotate a clutch 105 in a manner similar to that described in connection with the rotation of clutch 43 except that no trip mechanism is provided for the clutch 105. The clutch 105 has a spring 107 tending to turn both parts of the same and rotate through a worm and gear mechanism 109 the upper roller 35. However, when the recording surface 21 is held with respect to the c linder 19 by the action of the pins 55 on tlie clutch 43 the recording surface can not be moved with respect to the roller 35 and, therefore, the clutch 105 merely slips and can not pull the recording surface upward, but as soon as the pins 55 are released to permit a rotation of the cylinder 19 and its associated roller 41, the clutch 105 will turn the roller 35 and move the paper 21 upward and at the same time keep the paper tight with respect to the upright, so that as a picture formed by the action of the air jets 7 and 9 on the recording surface, the latter may be periodically advanced upwardly from the re cording cylinder 19 towardthe top of the photoradioscope and enable an audience viewing the same to continuously watch the progress of reproducing the picture as received by any appropriate type of radio or wire receiver actuating the signal recorders in the form of the air jets 7 and 9. It is convenient to provide recording medium or heat sensitive paper on a roll and I have, therefore, provided on the end supports 23 and 25 of the recording machine, a rack or support spindle 111 to carry the recording paper. From the support spindle 111 the paper is led from the roll under the cylinder 19 and between it and the roller 41 and thence upwardly to be passed between the roller 35 and its associated clamping roller 37.

In many cases it has been found desirable to provide a means for illuminating the picture as it is being developed, especially, in cases where the apparatus is displayed in store windows and can be conveniently used for advertising purposes at night and I have, therefore, provided on the sides of the upright portion of the frame work 31 and 33 lights 113 mounted in front of reflectors 115 for the purpose of directing light rays across the recording surface 21.

It is, therefore, clear that my invention provides a. means for displaying pictures which are produced according to the present disclosure in line by line formation by the action of a recording jet upon a sensitive recording medium and advancing the picture 5 as it is produced in its line by line formation a predetermined distance at interrupted intervals in accordance with the time for marking a single line of the fiicture, the advance distance being equal to t ewidth of one line of recordin which forms an excellent means for displaying the picture as produced for the purpose of advertising, explaining the process to others, and demonstrating the utility of the recording apparatus as well as for many other uses.

While I have confined my description as relating to the radio or wire transmission and reproduction of pictures it is to be distinctly understood that the term picture applies to the transmission and reproduction of manuscripts, finger prints, newspa r clippings or pages, blue prints, checks, 'agrams of all descriptions, as well as other forms of printed matter and such things as are adapted to make a visible impression on the eye and I, therefore, believe that my invention should only be limited in its sec 6 so far as the limitations expressed throug out the various appended claims necessitate.

Having described my invention I am entitled to all modifications such as fall fairly within its spirit and scope as defined by the following claims wherein;

I claim:

'1. A photoradioscope, including, a picture recording machine, a frame work associated therewith, a recording surface carried by said frame work and said recording machine,

means for producing marks on said record- 40 ing machine in accordance with received signal impulses, means for periodically advancing the recording surface with respect to said marking means, and means for providing an interrupted motion of said advancing means for said recording surface in accordance with the rate of reproduction of a single line of a received picture irrespective of the direction of said reproduction.

2. A photoradioscope for displaying pictures, which includes, a picture recording machine and associated signal actuated recordin means, a frame work carried by said recording machine, a roller on said frame work and said recording machine, a, recording surface carried by each of said rollers, means for advancing said recording surface with respect to said rollers and said signal actuated recording means, and means for producing an interrupted motion to said advancing means for advancing the recording surface a single step for each movement of the signal actuated recording means across the recording surface irrespective of direction of said movement.

3, A photoradioscope, including, a picture recording machine and associated si nal actuated recordin means, a frame wor carried by said machine, a roller upon the said machine and the upper ortion of said frame work, a recording sur ace carried by each of said rollers, means for moving said signal actuated recording mechanism back and forth transversely of said recording surface, and means for interruptedly advancin the said recordin surface a predetermine amount at the en of each transverse motion of the si al actuated recordin irrespective of the direction 0 said movement.

4. A photoradioscope for displaying electricallg; transmitted pictures at a point remote cm a transmitter, which includes, a picture recording machine and associated signal responsive recording means, a frame work supported by and extending above said machine, a substantially flat recording surface for recordin pictures, said surface being carried b said machine and the upper portion of said frame work, and means for advancing said recordin surface in step by step movements upwar y of said recording machine to the upper portion of said frame work and away rom said recording means, whereby the picture as received ma be produced so as to be at all times visib e during its re roduction.

5. he method of displaying pictures received from a distant point, which comprises, recordin impulses varying in intensities in accor ance with received signal strength, reducing a visible record from said signa s, displaying said visible record of the said marking impulses, and advancing the said visible record periodically and interruptedl in accordance with the rate of marking a single line of the received picture irrespective of the direction of said marking.

6. A photoradiosco e for displaying transmitted pictures, w ich includes, a picture recording machine and associated signal actuated recording means, a frame work carried by said machine, rollers on said frame work and said machine, a recording surface carried by said rollers, means for moving said signal actuated recording means bac and forth transversely of said recordin surface, means associated with one of sai rollers tending to continuously advance said recording surface, and means associated with the other of said rollers on said machine for interrupting the advance of said recording surface and permitting the said surface to be advanced a predetermined amount at the end of each transverse stroke of said recording means, whereby a new line of marking impulses is roduced on said recording surface.

7. A p otoradioscope for displaying received pictures, which includes, a picture recording machine and an associated signal actuated picture recording means, a picture mechanism displaying frame work supported by said machine, a set of rollers on said frame work and upon said machine, a recording surface carried by each of said sets of rollers, means for moving said signal actuated recording means back and forth transversely of said recording surface, friction drive means associated with one of said rollers tending to continuously advance the said recording surface with respect to said rollers, and means associated with the other of said rollers on said machine for interrupting the advance of said recording surface during each transverse movement of said recording surface and permitting the said surface to be advanced a predetermined amount at the end of each transverse stroke of said recording means irrespective of the direction of sai stroke, whereby a new line of marking impulses is produced on said recording surface for each longitudinal movement of said recording means.

8. A photoradioscope for displaying electrically transmitted pictures which includes a signal actuated recording mechanism, a display means for the reproduced pictures associated with saidrecording mechanism, a recording surface carried by said display means and-subject to the influence'of said recording mechanism, and means for producing a relative motion between said recording mechanism and said recording surface for continually presenting portions of the recording surface uninfluenced by received signals to the action of said recording mechanism for each change in the path thereof with respect to the said surface and irrespective of the direction thereof.

9. A photoradioscope including a picture recording machine and associated signal actuated recording means, a frame work carried by said machine, a roller upon the said machine and the upper portion of said frame work, a recording surface carried by each of said rollers, means for moving said signal actuated recording mechanism back and forth transversely of said recording surface, and means for advancing the said recording surface by predetermined amounts for exposing uninfluenced sections of the surface to recording action upon each transverse movement of the signal actuated recording mechanism irrespective of the direction of movement thereof.

10. A photoradioscope for displaying transmitted pictures which includes a picture recording machine and associated signal actuated recording means, a frame work carried by said machine, rollers on said frame work and said machine, a recording surface carried by said rollers, means for moving said signal actuated recording means back and forth transversely of said recording surface, means associated with one of said rollers tending to continuously advance said recording surface, and means asrecording means.

RICHARD HOWLAND RANGER.

CERTIFICATE OF CORRECTION.

Patent No. 1,819,197. 'Granted August 18, 1931, to

RICHARD ROWLAND RANGER.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 4, line 61, claim 2, before the word "movement" insert-the word transverse: and that the said Letters Patentshould be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 17th day of May, A. D. 1932.

M. J. Moore,

(Seal) Acting Commissioner of Patent

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