US1323175A - And one-fourth to john - Google Patents

Description

W. C. BUR-YEA.

PHOTOGRAPHIC RECORDER.

APPLICATION FILED SEPT. 1a. 1913.

1,323, 175. Patented Nov. 25, 1919.

4 SHEET$SHEET 1.

WITNESSES [MENTOR Z 71 2722021 6 .17141" ea W.

w. c. DURYEA. PHOTOGRAPHIC RECORDER.

APPLICATION FILED SEPT. l8, I918- 1,823, 175. Patented Nov. 25, 1919.

4 SHEETS-SHEET 2- WITNESSES 54 MENTOR 39 in 3i W. C. DURYEA.

PHOTOGRAPHIC RECORDER.

APPLICATION FILED SEPT. I8, 1918.

1,323,175. Patented Nov. 25, 1919.

4 SHEETS-SHEET 3. f' .X,

"HI HE. mmm

INVENTOI? iVvfju yea A ORIVEYS WITNESSES W. C. DURYEA.

PHOTOGRAPHIC RECORDER.

APPLICATION FILED SEPT. I8. 1918.

1 ,323 175. Patented Nov. 25; 1919.

4 SHEETS-SHEET 4.

WITNESSES M a 'AITORNEyS TTNITED STATES PATENT OFFIGE.

WILLIAM C. DURYEA, 0F PRINCETON, NEW JERSEY, ASSIGNOR OF ONE-THIRD TO ROBERT E. HOPKINS, OF TARRYTOWN, O. HOBBS, OF ELMHURST, NEW YORK.

NEW YORK, AND ONE-FOURTH TO JOHN PHOTOGRAPHIC RECORDER.

Application filed September 18, 1918.

To all whom it may concern.

Be it known that I, WILLIAM C. DURYEA, a citizen of the United States, and a resident of Princeton, in the county of Mercer and State of New Jersey, have invented a new and Improved Photographic Recorder, of which the following is a full, clear, and exact description.

This inventionrelates to cameras or ph0- tographic apparatus, and has particular reference to means for easily, accurately, and expeditiously forming upon strips or films any desired phenomena such as vibrations due to sound waves or the like.

Among the objects of the invention is to provide a photographic recorder having among others the following functions or advantages: First, for use as a recording chronograph; to record or register the move ments of an oscillograph; a moving coil galvanometer or strin galvanometer; for use in the examination or study of pulsations of the heart through the instrumentality of an electro-cardiograph, and also for recording telegraphic, cable, or wireless messages, signals, or the like.

With the foregoing and other objects in view the invention consists in the arrangement and combination of parts hereinafter described and claimed, and while the invention is not restricted to the exact details of construction disclosed or suggested herein, still for the purpose of illustrating a practical embodiment thereof reference is had to the accompanying drawings, in which like reference characters designate the same parts in the several views, and in which Figure 1 is a side elevation of a preferred embodiment of my invention, a portion of the gear casing being in section on the line 11 of Fig. 2.

Fig. 2 is a front elevation of the same, or looking toward the left in Fig. 1.

Fig. 3 is a vertical transverse sectional detail on the line 33 of Fig. 1.

Fig. 4 is an elevation of a detail of the lens mechanism as would be seen from the plane indicated by the line 4 4 of Fig. 6, parts of the structure being o nltted.

Fig. 5 is a horizontal sectional detail on the line 55 of Fig. 2.

Fig. 6 is a general vertical longitudinal section on the line 66 of Fig. 2.

Fig. 7 is a bottom plan view of the reel Specification of Letters Patent.

Patented Nov. 25, 1919.

Serial No. 254,607.

casing as would be seen from the plane of line 7 7 of Fig. 6.

, Figs. 8 and 9 are sectional detail views of the film carrying roll on the corresponding lines of Fig. 6.

Fig. 10 is an enlarged detail view of the film feeding or controlling mechanism on the same plane as that of Fig. 6.

Fig. 11 is a view of the same mechanism as Fig. 10, but with the movable parts of the feeding mechanism in changed position.

Fig. 12 is a vertical transverse sectional detail on the line 1212 of Fig. 10; and

Fig. 13 is a plan view of a fragment of a printed film showing one of the Various records that may be produced with the machine.

Referring now more specifically to the drawings, I show a machine or device comprising a base 15, on or adjacent to which is a suitable electromotor M whose shaft 16 carries a worm 17 meshing with a worm wheel 18 mounted upon a transverse shaft 19 having on its inner end a pinion 20 meshing with and driving a large spur gear 21 mounted upon a shaft of the aforesaid film carrier shown in the form of a drum 23.

Detachably supported in any suitable manner upon and above the main casing 24 in which the drum 23 is housed is a reel casing 25 in which is journaled a spool or reel 26 carrying the sensitized strip or film 27.

At the front of the main casing 24 is a front panel 28 pivoted at 29 and so adapted to swing forward and downward when the locking screw 30 is loosened from the bar or plate 31 extending across the inside of the casing. The front panel 28 carries or is provided with a forward extension 32 ha"- ing a horizontal slot 33 therein, and over which is an adjustable shutter comprising two Plates 3% maintained in constant parallelism by means of end links 35 and 36 pivoted respectively at 37 and 38 at the ends of the slot 33. A spring 39 is arranged to act tending to swing the shutter elements 34 toward each other, but a set screw 40 acts through a fixed nut 41 against the force of the spring whereby the clear space or slit 42 between the two shutter elements and in alinement with the slot 33 will be accurately determined.

The panel 28 back of the casing 32 is provided with a slot 43 in horizontal alinement with the slots 33 and 42 and just back of the slot 43 is a lens holder 44 comprising a plate of metal, or its equivalent, mounted slidably upon a pair of pins 45 screwed or otherwise fixed into the panel 28, a pair of springs 46 acting upon the plate 44 tending to urge it forward toward the panel 28. A plurality of set screws 47 bear rearwardly against the plate 44 to properly space the same from the slot 43 and against the force of the springs 46. When the proper adj ustment of this plate is secured the screws 47 may be locked by lock nuts 48. The lens 49 of any suitable character, but shown as oylindrical is clamped between upper and lower plates 50 and 51 by means of bolts 52 or their equivalent. The lower plate 51 is angular in cross section, a pair of screws 53 acting through the lower plate to lock it to the rear face of the lens holding plate 44, and consequently serving to hold the lens properly spaced back of the slot 54 in said plate 44. The screws 53 permit such vertical adjustment of the lens as may be necessary to effect proper alinement with all of the slots. The lens is inclosed in a casing 55 secured in any convenient manner to the inner surface of the panel 28, and this casing likewise has a slot 56 in its back wall which terminates just slightly spaced forward from the front portion of the carrier drum 23.

57 indicates a developing bath through which the film is carried by the drum 23, and from this bath the film is delivered into and through a fixing bath 58.

The carrier drum 23 comprises a core 23 having a rubber coat or jacket 23 covering its periphery as well as its sides. The periphery of the drum as indicated best in Figs. 8 and 9-is provided with an annular depression or wide groove 23, the edges of which are undercut forming lateral extensions 23 into which the edges of the film 27 are forced by the film feeding devices, and whereby the film is carried by the drum 23 through the, developing bath inperfectly straight or flat condition in cross section. The periphery of the drum is furthermore provided with a pair of parallel annular grooves 23*. I

Referring now to Figs. 10, 11, and 12 the feeding mechanism includes a friction roller 59 mounted upon a shaft 60 having fixed thereto a pinion 61 driven from and in the same direction as the gear 21 through an idler gear 62 all within the main casing 24. This friction roller 59 is thus mounted in fixed bearings and is rotated continuously when the motor is in operation. The film is delivered downward between the friction roller 59 and a gripping roller 63 journaled for rotation around a shaft 64 carried in a hanger 65 pivoted at 66. The hanger and gripping roller are normally urged rearward toward the friction roller 59 by means of a spring 67 carried by the bar 31 whereby the film is frictionally gripped and caused to be unwound from the reel 26 and delivered downward through a guide 68 having an upwardly flaring mouth 69. From the reel 26 the film is guided over a guide roller 70 thence downward through a slot 71 between relatively fixed and movable lips 72 and 73 of felt or the like. The movable lip is carried by a slide 74 adapt-ed to be adjusted and locked in place by means of a thumb nut 75. This fabric faced slot pro- 'vides for the proper tension .on the film without undue resistance, and yet insuring that no light will strike and damage the film prematurely.

To the lower edge portion of the guide 68 is fixed a shear blade 76, the cutting edge of which cooperates with a relativel fixed shear blade 77 carried by a hanger 7 8 pivoted at 79. One or more set screws 80 acting through a fixed abutment 81 tend to swing the hanger 78 downward against the force of any suitably arranged spring 82. In operation the film is fed downward through the guide 68 and between the shear blades 76 and 77 as shown in Fig. 10. The shoe 83 acts upon the outer surface of the film and by means of a pair of flanges 84 causes the edges of the film to be forced into the grooves 23. The shoe 83 is provided with upwardly projecting prongs 85 which serve to insure the proper delivery of the end of the film into engagement with the friction surface of the carrier 23. A spring 86 having one end fixed to the hub portion of the shoe and bearing against a fixed abutment 87 urges the shoe resiliently rearward toward the drum 23. The lower end of the shoe is just above the line of sight of the series of slots above described and hence the actinic impression is made upon the film just as it is leaving the shoe.

The gripping roller 63 has a convex or crowned curved surface and on opposite sides of the center thereof are formed annular grooves 63' into which a pair of fingers 68 carried by the guide 68 project, whereby the loose end of the film will be positively held from curling around the roller 63. The guide 68 is provided with an arbor 86 to which is connected a crank 87. \Vhen the crank is turned slightly around its axis the guide 68 will be tilted around its axis from the position of Fig. 10 to that of Fig. 11 with two direct results: First, the hanger 65 and its gripping roller 63 will be forced away from the friction roller 59, since the lower end of the hanger beans constantly, by virtue of the spring 67, against the front face of the'guide 68, thereby the tractive grip upon the film extending through the slot 71 will be instantly released.

Secondly, the film is sheared off by the passage of the shear blade 76 over the cutting edge of the shear blade 77. (See Fig. 11.) The motor, however, continuing to run will insure the conveyance of the exposed film through both the developing and fixing baths, and thence it will be delivered to any suitable washing appliance not shown. So long as the crank is held in its moved position there will be no further traction of the film 27 from the reel, but obviously when the crank is restored to normal position the gripping roller will be brought back into normal position with the friction roller and the film will again be delivered from the guide 68 over the shoe 83, or between the shoe and the roller.

Referring now to Figs. 6 and 8 the film is delivered from the rear portion of the drum 23 by means of a stripper 88 shown as comprising a member concave at its lower surface, one edge of which adj acentto the drum 23 is provided with fingers 89 which project into the annular grooves 23 formed in the face of the drum and whereby the film ltS stripped from the grooved portion of the drum and. delivered rearward and downward into the fixing bath 58 under an. agitator drum 90. The stripper is suspended from a axis 91, and a spring 92 urges the same forward toward the drum keeping the fingers 89 in the grooves. The agitator drum is essentially cylindrical but hollow, having one .open end whereby the contents of the bath 58 are kept continually agitated. This drum is operated by means of a belt 93 driven from a pulley 94 attached to the shaft 60 and operating over a pulley 95 fixed to the axis 96 of said drum. This axis is journaled in a bracket 97 vertically adjustable by means of a screw and slot connection 98 with the side of the bath receptacle. Through the adjustment at the screw 98' the proper tension on the belt as well as the elevation of the drum 90 may be obtained.

The film 27 may be provided with any suitably arranged graduation marks 27', and with the device constructed and adjusted as described and set in operation said film will be carried at a uniform rate of speed across the line of sight back of the lens 49. The specific construction of the guiding means for the film and the structure of the carrier 23 itself insure that the film will be carried in a perfectly uniform manner or held from any possible lateral vibration. If now any vibrating element such as a string, wire, or the like which is arranged or suspended vertically or across the sight slit formed by the shutter elements 34 an impression or image will be produced upon the film in accordance with the vibration of such vibrating element. Obviously the process of photographing the action of the vibrating member may be continued as long as desired, and the film carrying the same will be developed automatically and immediately thereafter, or as a continuous operation. At any time, however, the film may be severed and the feed of the sensitized film stopped by the actuation of the crank 87 as described.

I claim:

1. In a photographic recorder, the combination of a casing having a light admitting opening extending therethrough and adapted to contain a sensitized medium, and means to actuate said medium past the light admitting opening, said actuating means including a movable member having a depression in its surface with undercut side edges, and means to force said medium into the depression and with its edges extending into said undercuts.

2. In a photographic recorder, the combination of a casing adapted to contain a sensitized film and having a light admitting opening, means carried by the casing to con trol the action of light therethrough upon the film, a rotating film carrier having a substantially smooth surface to receive the film, said surface being bounded by undercut flanges, and means to automatically force the edges of the film beneath said undercut flanges whereby the film is carried in a substantially flat form and at a definite distance from the light controlling means.

3. In a photographic recorder, the combination of a casing adapted to contain a sensitized film and having an opening to admit light in a plane, means to actuate the film toward and across the plane of the admitted light, said actuating means including a pair of cooperating rollers gripping the film on opposite sides, a film carrier, means to cause the carrier to grip the film and carry it at a fixed distance from the light controlling means, and means to actuate the gripping means and carrier simultaneously and at a uniform speed.

4. In a photographic recorder, the combination of a casing adapted to contain a sensitized film and having an opening to admit light in a plane, means to control the admission of light therethrough, means for holding a developing bath, means to actuate the film toward the plane of the admitted light, a film carrier, means to cause the film carrier to grasp the film after it has been actuated by the aforesaid actuating means and carry it at a fixed distance from the light controlling means and thence through the developing bath, and means to actuate the actuating means and carrier at a uniform s eed.

5. In a photographic recorder, the combination of a casing adapted to contain a sensitized film and having a light admitting opening, means to control the admission of light therethrough, a film carrier in the form of a rotatable member, said carrier being provided on its surface with a depression having lateral extensions, means to introduce the film into the depression, means to cause the edges of the film to be forced into the lateral extensions whereby the film is carried at a uniform distance from the light controlling means, and means to actuate the film carrier and film delivery means simultaneously and uniformly."

, 6. In a photographic recorder, the combi:

nation of a casing adapted to contain a sensitized film and having a light "admitting ope light therethrough, means to carry the film means to control the admission of at a uniform rate of speed across the light and at a fixed distance from the light controllingmeans, and film feeding devices serving to deliver the film to the carrier, said feeding device including a frictionroller journaled for rotation around a fixed axis, means to rotate the roller at a definite speed with respect to the movement of the film carrier, a gripping roller cooperating with the friction roller, and means to cause the.

. carrier and simultaneously deliver the film through the developing bath through which the carrier operates, and means to render the delivery means inactive and sever from the main portion of the fihn the exposed portion thereof while the carrier continues to operate to develop and discharge the exposed and developed portion of the film 9. In a device of the character set forth, the combination of a casing having a light admitting opening, means to control the admission of light therethrough, an endless film carrier, means for holding a developing bath, means to deliver a sensitized film to the carrier whereby it is carried at a fixed distance from the light controlling means and across the light and then through the developing bath, and means to discharge the film from the carrier through the casing.

10. In a device of the character set forth, the combination of a casing, means to admit and control the admission of light thereinto to deliver a film to the surface of the carrier whereby it is carried across said plane and at a uniform distance from the light controlling means, and a stripper serving to discharge the film from the carrier through the casing, said stripper having means projecting into the carrier beneath the film.

11. In a device of the character set forth, the combination of a casing, means for holding a developing bath, a drum shaped film carrier operating within the caslng and through the developing bath, said carrier being provided with annular rooves at its engaging surface, means to eliver a film to the grooved surface and over the grooves, the film being carried by the carrier throu h the bath, and astripper to discharge t e film from the carrier and thence from the casing, said stripper including a concave member one edge of which is provided with fingers projecting into said grooves beneath the film.

12. In a device of the character set forth, the combination of a casing, means to admit and control the admission of light thereinto in a thin sheet, a film carrierserving to carry a film across the plane of the light and at a definite distance from the controlling means, means to deliver thefilm to the carrier, said delivery means including devices to actuate and propel the film, and also including movable means to sever the exposed portion of the film from the unexposed portion thereof.

13. In a device of the character set forth,

the combination of a casing, a film carrier therein, means to deliver a film to the carrier, said delivery means including a friction roller, means to actuate the roller and carrier at a constant uniform speed, said delivery means also including a gripping roller and a hanger upon which the gripping roller is journaled, said hanger including a film guide, and means cooperating with the film guide tosever the portion of the film being actuated by the carrier, the last mentioned means serving to separate the gripping roller from the friction roller and thereby stop the delivery of the film while the friction roller and carrier continue in operation.

WILLIAM C. DURYEA.

Images