US3846839A

US3846839A - Mechanical scanner

Info

Publication number: US3846839A
Application number: US00372908A
Authority: US
Inventors: M Gerry
Original assignee: Individual
Current assignee: Individual
Priority date: 1973-06-25
Filing date: 1973-06-25
Publication date: 1974-11-05
Anticipated expiration: 1991-11-05

Abstract

A mechanical scanner comprising an endless belt having a plurality of electrically conductive strips embedded in the material of the belt for making contact with guiding rollers. The conductive strips have extensions embedded for connecting and carrying a magnetic head by the belt so as to enable the belt to transport the head and thereby cause the head to scan a surface of magnetizable material to record on the surface or to reproduce from such surface. One of the guiding rollers is coupled to a motor that drives the belt during scanning action. Control circuits are provided for controlling the scan time, controlling the injection and ejection of a slide or tape portion, and for automatically recycling the scanning action.

Description

United States Patent [19] Gerry I 7 NOV. 5, 1974 1 1 MECHANICAL SCANNER [76] Inventor:

St., Santa Ana, Calif. 92705 22 Filed: June 25, 1973 211 Appl. No.: 372,908

[52] U.s. Cl 360/108, 360/2, 360/3,

1 360/107 [51] Int. Cl. Gllb 5/48 [58] Field of Search 360/2, 3, 12, 107, 108; I 353/19 [56] References Cited UNITED STATES PATENTS 2.676206 1 4/1954 Bennett et'al. 360/107 3,122,054 2/1964 Dimitracopoulos et a1. 360/108 3,389,636 6/1968 Weitzner et al. 360/107 Martin E. Gerry, 13452 Winthrope- Primary Examiner-Stuart I-I. Hecker [5 7 ABSTRACT A mechanical scanner comprising an endless belt having a plurality of electrically conductive strips embedded in the material ofthe belt for making contact with guiding rollers. The conductive strips have extensions embedded for connecting and carrying a magnetic head by the belt so as to enable the belt to transport the head and thereby cause the head to scan a surface of magnetizable material to record on the surface or to reproduce from such surface. One' of the guiding rollers is coupled to a motor that drives the belt during scanning action. Control circuits are provided for controlling the scan time, controlling the injection and ejection of a slide or tape portion, and for automatically recycling the scanning action.

17 Claims, 11 Drawing Figures PATENTED I07 5 I974 sanctum FIG.3A

FIG.2

PAIENTEBIUV 5mm 3.846.839

MEI 30? 4 FIG.7

MECHANICAL SCANNER.

INCORPORATION BY REFERENCE US. Pat. No. 3,498,703, granted to the same inventor, and particularly FIGS. 2, 4, 5, l2 and 13 thereof andassociated descriptivematter, is hereby incorporated by reference as though fully set forth herein.

BACKGROUND OF THE INVENTION This invention is in' the field of scanners in order to scan a magnetizable surface for the purpose of record- .ing sound thereon and for reproducing soundtherefrom.

The major problem with most of the prior art is that a limited amount of scan time can be obtained over a given surface area. In most instances, it is impossible to move the head with respect to the magnetic surface without interfering with associated optics provided for a particular slide or transparency. Also, most of the prior art is incapable of providing a simple inexpensive scanner that can scan the area circumjacent a typical mounted transparency, wherein the transparency mounting can be coated with an oxide of iron material for recording on all peripheral areas of the slide with a single scan cycle.

US. Pat. No. 3,251,263 provides a scanner that is not possible to be used for scanning about the periphery of a slide, since a zig-zag scan action providedwould interfere with a slide centrally mounted within the scan area.

US. Pat. No. 3,340.632 provides a rotatable head in a spiral path. The arm bearing the head is complex, and also would interfere with any slide centrally mounted about a peripheral recording area.

US. Pat. No. 3,526,454 has a rectilinear scanner, but there too, the arm bearing the head interferes with optical projection of light through a transparency centrally mounted with respect to-a scan area circumjacent the transparency.

US. Pat. No. 3,498,703 has a scanner arm retaining a head and making an oscillating scan pattern. Here too the components are complex and the arm would interfere with light projected through a central opening in a slide wherein the periphery of the slide is used for recording or reproducing purposes.

US. Pat. No. 3,592,535 has a linear scanner guided by arms wherein the arms carry the head. Such scanner is also complex and would also interfere with recording or reproducing about the periphery of a mounted slide.

US. Pat. No. 3,712,723 has a rectilinear scanner, but there too, the arm bearing the head interferes with optical projection of light through a transparency centrally mounted with respect to a scan area circumjacent the transparency.

US. Pat. No. 3,122,054 provides means for recording sound in spiral pattern on a transparency retainer about the periphery thereof. However, the means used for providing the sound track circumjacent the slide area comprises a pivotably supported carriage and a plurality of concentric slip rings and brushes, a pivotably supported arm. on a hollow shaft retaining a head,

which arm is guided in a journal bearing. Associated with the scanning means are anumber of other components required for operation of this device resulting in a complex and expensive mechanical system,- as can be seen merely by viewing FIGS. 3 and 4'of this patent.

US. Pat. 3,276,313 provides for a film strip with visual frames wherein half of the frame is used for sound trackpurposes. However, this patent does not show the exactstructure to be used in making the sound track, which if made, does not result in a sound track circumjacent the visual frame on the frame or transparency retainer.

INVENTION SUMMARY A mechanical scanner for transporting a recordreproduce head has an endless means comprising an electrically insulating endless belt and electrically conductive endless means integral with the belt. The electrically conductive endless means have partially exposed surfaces for cooperating with metallic surfaces of rollers that are rotatably attached to an insulating plate. One of the rollers is driven so as to transport the belt over a predetermined path.

Means integral with the electrically conductive endless means are provided for making electrical and mechanical connection to the head.

The rollers and the endless belt have anti-slippage means on their surfaces in contact with each other for prevailing belt slippage during scanning action as the belt is being driven. The electrically conductive endless, means may be a plurality of resilient members that are integrally molded into the belt, providing the means for making connection to the head.

The rollers are rotatably mounted on spool retainers which are used for making electrical connection of the head to a record-reproduce circuit.

A motor adapted to one of the rollers by virtue one of the rollers is rotatably adapted to the insulating plate that retains the rollers and provides the necessary timing for scan action associated with a control and timing circuit.

The electrically insulating plate may have an opening substantially at its center for enabling light to be communicated therethrough.

Circuits are provided which are connected through the roller assemblies to the head for providing the requisite recording or reproducing capability on the periphery of a slide retainer or on an area of a magnetic tape.

Control circuits enable control of the scan time of the scanner, automatic advance of the magnetic tape and film strip or slides, either when used in a camera or a projector. One slide or film strip may be advanced at any one time, or automatic sequencing of slides or film strip areas obtained together with scanning action, and the scan period for each scanning action may be obtained using the control means.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a perspective view of a mounted slide or transparencyin relationship to a mechanical scanner in accordance with this invention.

FIG. 2 is a plan view of a mechanical scanner having a central opening for communication of light therethrough.

FIG. 3A is a cross-sectionview taken on line 3A3A of FIG. 2.

FIG. 3B is an end elevation view of the mounted slide of FIG. 1 held firmly in a track and shown in operative relationship to the head of the scanner of FIG. 3A.

FIG. 3C perpectively shows a portion of the endless belt used in any of the scanners with certain details of the belt in cross-sectional view, and certain details of a guiding and conveying roller for such belt.

FIG. 3D shows similar details of the components shown in FIG. 3C, but viewed from a direction opposite to that viewed in FIG. 3C.

FIG. 4 is a-plan elevation schematic showing a scanner belt configured on its support plate.

FIG. 5 is a perspective schematic of a generally sinusoidal pattern scanner configuration.

FIG. 6 shows a mounted transparency wherein the recording area is adjacent to the areabearing the transparency, and usable with the scanner of FIG. 5.

FIG. 7 is an elevation view representing either a camera or projector wherein strips of film and strips of recording tape are separately guided by suitable spools and motor driven for spool take up purposes. This configuration is usable with the scanner of FIG. 6, although any of the other scanners may be used.

FIG. 8 is a schematic showing mostly electrical relationships for controlling the scanner, for providing record or reproduce capability, for providing suitable timing for the scan cycle, for advancing the strip of film and tape or injecting and ejecting a slide, and for providing automatic recycling of the scan operation during reproduction mode operation of the scanner.

EXEMPLARY EMBODIMENT Reference is made to FIGS. 1 and 38, wherein a typical 35 millimeter slide'or transparency is shown at 10 comprising an actual transparency 11 mounted in a paper or plastic mounting frame 12. Surface 13 of frame 12 may be coated with magnetizable material such as an oxide of iron, as is typically used to make magnetic recording tape. A scanning device is generally shown at 15 comprising an electrically insulating mounting frame 16 having an open window at 17. Frame 16 has mounted thereon rollers 18a, 18b and 180 that are each freely rotatable about a mounting pin which is also used to retain the rollers on frame 16. Roller 18d is also rotatably retained on frame 16 by a retaining pin, however, the non-visible end of this retaining pin is coupled to a motor drive mechanism (not shown herein but similar to that shown and discussed in connection with FIG. 3A, below). Roller 18c is also freely rotating about a retaining pin anchored to frame 16. Endless belt 19 (of the configuration shown in segmentary portions thereof in FIGS. 3C and 3D) is mounted on rollers 18a18 e and driven by means of roller 18d. In viewing the construction of the endless belt (as shown in FIGS. 3C and 3D) one can see that it is made of insulating resilient material such as rubber, and has embedded therein flexible'members for attaching same to magnetic record-reproduce head 20. Hence, extensions from head 20 (as will be more clearly seen in FIG. 3A) connects to these flexible members. According to FIG. 1 configuration one flexible member will make contact with the metallic surfaces of rollers l8a-18d, whereas the other flexible member will always make contact with the metallic surface of roller 18e. Hence, if connectingmeans such as soldering-lugs are attached to the pins retaining these rollers, electrical contact can be made during the period head 20 is transported by belt 19. Means for controlling translation of the belt will be discussed hereinbelow in connection with FIG. 8.

However, it can be seen that spools or rollersv 18a-18d can be used forelectrical connection of one terminal of the head to one terminal of the recordreproduce system and roller 18e to make identical connection of another terminal of the head to the return' side of the record-reproduce system. In operation, slide 10 will be parallel to scanner 15 so that head 20 cooperates with surface 13. If the scanner isused iii a camera, light entering the camera at 21a for photographing the image on transparency film 11 would pass through opening 17 at 21b. During reproduce mode however, a source of illumination will be present represented by arrow 22a wherein light will pass through opening 17, illuminate the already developed image on transparency 11 and emerge through the lens system of a projector (not shown) at 22b for projecting the image in normal fashion. Therefore, this type of scanner can be used in cameras having individual slide packs, and in slide projectors. In using slide 20 in either camera or projector, it is fixedly retained therein during the scan operation in a holder such as exemplified at 23. Operatively, as will be discussed in connection with FIG.-8, below, head 20 starting at a predetermined location as shown, will be translated over the path describing the belt configuration and the control'means to be described will shut itself off when the head has been returned to its initial start location, or if a number of slides are involved, the control circuit will restart the head translation on ejection of prior slide and injection of a new slide.

Referring to FIGS. 2, 3A, 3B, 3C and 3D, scanner 30 is similar to scanner 15 of FIG. 1 with the exception that the endless belt is a longer than used in connection with scanner 15, thereby resulting in about 16 seconds of scanning time instead of 8 seconds as provided by scanner l5 configuration, and more rollers or spools for retaining the endless belt are necessarily provided. Hence, electrically insulating mounting plate 31 isprovided with an opening at 32 for light to pass therethrough as discussed in connection with FIG. 1 configuration.

Rollers

33a, 33b, 33c, 33d and 33e are free rolling, the same as rollers 18a-18c of FIG. 1. Roller 33f is attached to its mounting pin 33f and is coupled to gear 34 which is driven by gear 35, and gear 35 is driven by scanning motor 36 retaining on its shift timing cam 37 to time the. scan cycle. Rollers 33g, 3311, 331' and 33] are mounted on retaining pins and are freely rotatable about such rotating pins as exemplified by roller 33j and rotating pin 33j'. Therefore, electrical connection can be made between the group of rollers 33a-33f to terminal 38, and another independent elec tive spring material such as beryllium copper. In molding the flexible metallic members to the resilient belt material, metallic extensions 43 and 44' are molded into the belt to make connection respectively with

members

41 and 42 to extend therefrom in a direction orthogonal to the direction of translation of the belt. Head 20 is provided with electrical lugs 45 and 46 so as to make easy connection by soldering or welding such lugs respectively to metallic extensions 43 and 44. Belt 40 may be provided if desired with grooves or teeth or indentations as at 40a for cooperating with protrusions or complementary teeth as at 40b of the several rollers to prevent belt slippage during translation thereof when driven by motor 36, and'thereby guarantee faithful reproduction of scan cycle. In translating the magnetic head from an arbitrary start position denoted in FIG. 2 at 20, the head will follow the pattern describing configuration of belt 40, and will be controlled as to its recycle time in similar manner as described in connection with FIG. 1. During the scan cycle, head 20 will always be in contact with surface 13 of frame 12 bearing the film or slide as the case may be.

FIG. 4 shows scanner 50 which is operatively similar to scanner 30, except that belt 60 of scanner 50 provides about 24 seconds of scan time. Structurally, belt 60 is identical to belt 40 except that belt 60 is longer and necessitates more rollers for guiding same and for providing'electrical contact as in the case of belt 40. Connection to the record-reproduce circuit may be made between terminals (not shown) that are electrically connected to

rollers

33f and 33j, and in this connection FIGS. 30 and 3B suffice to show the relationship of scanner 50 substituting for scanner 30 therein.

Referring to FIGS. 5 and 6, the schematic illustration of scanner 62, operatively similar to scanner 30, has a zig-zag configuration of belt 64. Belt 64 is similar in structure to belt 40 and is transported and guided along contacting rollers exemplified by 65f and 65], which are similar in structure to

rollers

33f and 33j and making electrical contactof the endless copper members in belt 64 with

rollers

65f and 65j in the same manner as contact is made by

members

41 and 42 with

rollers

33f and 33j. Rollers of scanner 62 are mounted on electrically insulating panel 63 in similar manner as the rollers are mounted on the insulating panel of scanner 30. The configuration of FIG. 5 is preferred where space in the camera or projector is not a factor, and accordingly where a slide retainer 66 having a surface 67 coated with oxide of iron is used for making contact with the record-reproduce head used therein for providing the record or reproduce track on surface 67 following the pattern describing configuration of belt 64. Slide retainer 66 also has another portion 68 used to retain a film or transparency 69. In this configuration it is obvious there will be no interference between scanner and the optical path to or from film or transparency 69.

Referring to FIG. 7, scanner 62 of FIG. 5 may be used therein as well as

scanners

15, 30 or 50. This configuration is addressed to providing sound with each photographic frame of a film strip. Incorporated herein by reference is US. Pat. 3,498,703, FIGS. 2, 4, 5, 12 and 13 thereof and descriptive matter relating thereto. This patent, issued to the same'inventor, shows detailed configurations including cartridges wherein the recording tape and film strips are retained, of which configuration at 70 is only exemplary without attempting to show such operative parts and detailed control'circuits already shown in thispatent. Briefly, though the. configuration at 70 comprises film strip 71 with a zone 72 thereof characterizingeither an exposed portion of the film or a portion of the film to be exposed. Magnetic tape is provided at 73 where a zone 74 is shown in I which recording or reproducing of sound associated with film portion 72 is obtained by means of use of

scanners

62, 15, 30 or 50 in conjunction with surface 74. As described in the incorporated patent, film strip 71 is guided by means of its sprocket holes and sprocket wheels at 75 on spool 76 or the like, and similarly tape 73 is guided by sprocket holes andv sprocket wheels at 77, mounted on spool 78. Couplingmeans at 79 between

spools

76 and 78 is provided, where in some tape and film strip drives the spools are directly coupled to each other. The various drive and spool coupling mechanisms for changing frames 72 and 74, by taking up the film strip and magnetic tape the required amount, is discussed in the incorporated patent.

Referring to FIG. 8, the control circuit for the scanner shown in FIGS. 2, 3A, 3B, 3C and 3D, the recordreproduce circuit and the frame or slide change circuit is depicted schematically at 80. Circuit 80 may also be used in conjunction with

scanners

15, 30, 50 or 62. Accordingly, wire 38 exemplifies the connection made to lug 38 and ground symbol at 39 the connection made to lug 39. It is understood that ground symbols in FIG. 8 are intended to represent the electrical return path from an intelligence signal recorded or reproduced or the return path for any of the control circuits hereinafter described.

Switch 81 is a triple pole double throw switch that provides record or reproduce selection. This switch is shown in the record position as normally shown in FIG. 8 when such switch is in position denoted by arrow 82, and in the reproduce position when such switch is in position of arrow 83. In this switch, wire 38 is connected to movable contactor 84. Stationary contact 85 is connected to a carrier or bias supply 86 used in the recording mode. Stationary contact 86 is connected to stationary contact 92. Movable contact 84 is also connected to stationary contact 88. Movable contact 87, in cooperation with stationary contact 88, is connected to the output of audio amplifier 93 so that during the record mode both audio amplifier signal, and carrier signal generally between 30 and 60 kilohertz, are provided at the same time to record-reproduce head 30.

contact 92. Therefore, microphone 94 and oscillator 86 are disconnected respectively from input to amplifier 93 and output from oscillator 86. Output of amplifier 93 is also disconnected from input to head 20, and head 20 input is now connected to input of audio amplifier 93, the output thereof being connected to loudspeaker 95 for reproducing sound previously recorded as scanner moves head 20 over its predetermined path, as above described. Power from battery or similar power supply 96 is provided to 0scillator86 and amplifier 93 by means of wire 97.

In the camera mode, pushbutton 98 having movable contactor 99 and

stationary contactors

100 and 101 provide power to solenoid 102 for actuating the camera shutter. Power supplied from wire 97 to contactor 100,

and the coil of solenoid 102 being connected to contactor 101, upon momentarily depressing movable contactor 99 solenoid 102 is momentarily actuated to operate the shutter of a camera, wherein the inventive scanner is used in a camera and it is desired to obtain the photograph prior to providing the recorded sound associated therewith.

To obtain the recording of sound, or reproducing of sound already recorded, push button 103 is provided. This push button has movable contactor 104, and stationary contactor 105 connected to wire 97 as well as stationary contactor 106 connected to winding 108 of relay 107. Relay 107 is provided with movable contactor 109 connected to wire 97, and also has stationary contact, 110. Relay 107 is also provided with movable contact 111 connected to wire 97, and also has stationary contact 112 which is connected to scan motor 36,

Microswitch 113 has movable contactor 114 which is I connected to contactor 111, and also has stationary tactor 120, in the normal inoperative position of cam 37, makes contact with contactor 11-8, in fact such contact is made over 355 of cam 37 rotation. Contactor 120 is connected to stationary contact 110 so that upon activation of relay 107 pulling

contact pair

109 and 110 and

contact pair

111 and 112 in closed posithe return side of motor being connected to ground 39.

connected to movable contactor 123 of microswitch 122. Movable contactor 135 of microswitch 133 has roller 136 that cooperates with cam 131 about 3 degrees from location of roller 125. Upon rotation of cam 131 in direction of arrow thereon, when cam 131 has been rotated about 357 degrees, contactor 135 will cooperate with contactor 134 to provide momentary power to contactor 138 of switch 137 through a connection made between contactor 135 and contactor 138. Contactor 139 of switch 137 is connected to contactor 106 of push button 103 and to winding 108 of relay 107. Hence, when switch 137 is closed, power will be provided to relay winding 108 upon completion of 357 degrees of rotation of cam 131. Since the purpose of motor 130 is to drive timing cam 131 and thereby actuate

microswitches

122 and 133 at their proper time either purposely when momentarily depressing push button 126 or automatically at the end of a scan cycle, in either case to advance a slide frame or slide and accompanying sound surface. Motor 130 is driven rapidly for changing frames or injecting or ejecting slides,

tion, contact pair 109-110 provide holding of relay 107 operative after contactor 104 has been momentarily pushed and then released for the duration of the scan cycle. Upon actuation of rely 107 motor 36 is activated for the duration that cam 37 takes to complete about 355 of rotation in direction'of the arrow on cam 37. This duration can be timed according to the scan time requirements of 12, 18, 24 or more seconds, as required depending upon the scanner used.

Movable contactor 118 is connected to power supply wire 97 and also to movable contactor 123 of microswitch 122. Stationary contactor 121 of microswitch 117 is connected to stationary contactor 124 of microswitch 122. Also power from wire 97 is provided to contactor 123. At the same time power is also provided by wire 97 to contactor 127 of push button 126, and contactor 128 of push button 126 is connected to contactor 124 of microswitch 122. Movable contactor 129 of push button 126 is provided so that if depressed momentarily applies power to motor 130 through

contacts

127 and 128, starts motor 130 to rotate closing contact pair 123 and 124 of microswitch 122 thereby driving cam in direction of arrow thereon so as to rotate cam 131 for substantially a complete rotation thereof. During rotation of cam 131, roller 125 of microswitch 122 positioned on the high portion of cam 131, will move off the high portion to effect cooperation between contacts 123 and 124. At the same time as motor 130 is operative, shaft 132 which is coupled thereto will be rotated. This shaft, as for example shown in FIG. 7, provides means for advancing the film strip or in the case of a slide to operate the slide injector-ejector apparatus. Microswitch 133 is also operated by cam 131. This microswitch has stationary contactor 134 which is whereas motor 36 is driven slowly for obtaining the scanning action. The automatic or programmed feature of sequential advance of new slides or frames on completion of old slides or frames is obtained by having automatic advance switch in closed position to automatically restart and complete the scanning cycle. Such automatic restart will continue until switch 137 is opened, after execution of one additional scan cycle if same is already in progress, the control'circuit will automatically shut itself off. It will be necessary to momentarily depress push button 103 to restart the scan cycle, and such push button is used, withoutclosing switch 137, when one at a time scan is desired without automatic restart of scan cycle.

Additionally, push button 140 is provided wherein

contactors

141 and 142 are connected to power supply wire 97, contactor 143 is connected to solenoid 102, and contactor 144 is connected to winding 108 of relay 107. Movable contactor 145 is attached to insulating member 146, and movable contactor 147 is attached is also attached to insulating member 146 but electrically separated from contactor 145. Therefore when push button 140 is momentarily depressed by depressing member 146, contactors 141 and 143 cooperate with contactor 145, and

contacts

142 and 144 cooperate with contactor 147 to simultaneously activate solenoid 102 and hence the camera shutter in the camera mode, and also start the scan cycle during the time for picking up sound from an external source to the camera for simultaneously recording and photographing the image. Of course the recording scan cycle will last a very long period of time compared to the fraction of a second during which the camera shutter is actuated.-

I claim:

1. In a mechanical scanner for transporting a head:

means integral with said electrically conductive endless members for making connection to said head.

3. The invention as stated in claim 1, wherein: said insulating endless belt is of a resilient material selected from the group consisting of rubber, synthetic material or mixtures thereof. 4. The invention as stated in claim 1: the electrically conductive endless members being of resilient material. 5. The invention as stated in claim 4, wherein: the resilient material is beryllium copper. 6. The invention as stated in claim 1, including: an electrically insulating .plate; and rollers, having electrically conductive'surfaces,

rotatably affixed to said insulating plate for translating said endless means over a predetermined path and for cooperating with the partially exposed portions. 7. The invention as stated in claim 6, wherein: said insulating endless belt and said rollers have anti slippage means integral therewith for preventing slippage of the endless means during translation thereof, I 8. The invention as stated in claim 6, wherein: said endless means is formed generally oscillatory shape while being translated over said predetermined pat. 9. The invention as stated in claim 6, wherein: said electrically insulating plate has an opening substantially at its center for communication of light therethrough. 10. The invention as stated in claim 9, wherein:

said endless means is folded back and forth while being translated in said predetermined path circumscribing said opening without crossing said opening.

11. The invention as stated in claim 6, including:

roller retaining means f or rotatably retaining said iii lers; and means attached to the roller retaining means for making electrical connection of the head external "t esqa q j, a s 12. The invention as stated in claim 11, wherein: one of the roller retaining means is fixedly attached to one of said rollers and the combination of roller retaining means and associated roller is rotatably driven for translating said endless means 13. The invention as stated in claim 6, including: means adapted'to one of said rollers for driving said vsmilessmy s-m. a. a 14. The invention as stated in claim l 3 inclu clingi control means for controlling the scan period of the driven endless means. w mm 15. The invention as stated in claim 14, wherein:

said control means includes means for automatically I sequencing scanning action of said scanner.

16. The invention as stated in claim 14, whereiri said control means includes means for controlling sca s!SQQQPQ PQELEEL: 17. The invention as stated in claim 16, wherein: said control means includes means for stopping scanning action on completion of said sequencing.

2% UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION patent 3,846,859 r Dated November 5, 1974 Inventor-(s) v Martin E' Gerry It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

F Q clam 8, Colugn 9, 'L;. n e 23: H

Insert the Words in a-fbetween the words "formed- H .generallyoscillatory" Claim 8, Coluiqn Line 25:

Change the last word. in the claim to read --path--- Q Clsim 1 :1 Column 10, Line 28:

delete th words "claim 16"; substitute therefor -claim 15-- Signed and sealed this 7th day of January 1975.

(SEAL) fittest v McCOYM GIBSON JR. I I I C. MARSHALL DANN Attesting Qf-fi cer Commissioner of Patents

Claims

1. In a mechanical scanner for transporting a head: endless means comprising in combination: an insulating endless belt; and electrically conductive endless members integral with said insulating endless belt, said electrically conductive endless members having partially exposed portions.

2. The invention as stated in claim 1, including: means integral with said electrically conductive endless members for making connection to said head.

3. The invention as stated in claim 1, wherein: said insulating endless belt is of a resilient material selected from the group consisting of rubber, synthetic material or mixtures thereof.

4. The invention as stated in claim 1: the electrically conductive endless members being of resilient material.

5. The invention as stated in claim 4, wherein: the resilient material is beryllium copper.

6. The invention as stated in claim 1, including: an electrically insulating plate; and rollers, having electrically conductive surfaces, rotatably affixed to said insulating plate for translating said endless means over a predetermined path and for cooperating with the partially exposed portions.

7. The invention as stated in claim 6, wherein: said insulating endless belt and said rollers have anti-slippage means integral therewith for preventing slippage of the endless means during translation thereof.

8. The invention as stated in claim 6, wherein said endless means is formed generally oscillatory shape while being translated over said predetermined pat

9. The invention as stated in claim 6, wherein: said electrically insulating plate has an opening substantially at its center for communication of light therethrough.

10. The invention as stated in claim 9, wherein said endless means is folded back and forth while being translated in said predetermined path circumscribi said opening without crossing said opening.

11. The invention as stated in claim 6, including: roller retaining means for rotatably retaining said rollers; and means attached to the roller retaining means for making electrical connection of the head external to the scanner.

12. The invention as stated in claim 11, wherein: one of the roller retaining means is fixedly attached to one of said rollers and the combination of roller retaining means and associated roller is rotatably driven for translating said endless means.

13. The invention as stated in claim 6, including: means adapted to one of said rollers for driving said endless means.

14. The invention as stated in claim 13, including: control means for controlling the scan period of the driven endless means.

15. The invention as stated in claim 14, wherein: said control means includes means for automatically sequencing scanning action of said scanner.

16. The invention as stated in claim 14, wherein: said control means includes means for controlling scanning action one said scan period at a time.

17. The invention as stated in claim 16, wherein: said control means includes means for stopping scanning action on completion of said sequencing.