US1330400A

US1330400A - Camera

Info

Publication number: US1330400A
Application number: US93780A
Authority: US
Inventors: David A Sine
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-04-26
Filing date: 1916-04-26
Publication date: 1920-02-10
Anticipated expiration: 1937-02-10

Description

D. A. SINE.

' CAMERA.

APPLICATION FILED APR. 26. 1916.

Patented Feb. 10, 1920.

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CAMERA.

- APPLICATION FILED APR.26, 1916.

1 ,330,4;OO, Patented Feb. 10, 1920.

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CAMERA.

APPLICATION FILED APR. 26. 1916. 1,330,400. Patented Feb. 10,1920.

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DAVID A. SINE, OF GREECE, NEW YORK.

CAMERA.

Specification of Letters Patent.

Patented Feb. 10, 1920.

Application filed April 26, 1916. Serial No. 93,780.

To all whom it may concern:

Be it known that I, DAVID A. SINE, a subject of the King of Great Britain, and resident of Greece, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Cameras, of which the following is a specification.

The present invention relates to photographic cameras and more particularly to the type in which a reflector is adapted to be interposed in the path of the image from the lens for the purpose of directing said image upon a screen in order that the proper focusin of the camera may be obtained, but it is to be understood that the invention also embodies certain features which are capable of use in cameras of other types. An object of this invention is to make provision by which cameras of the above type may be more compactly constructed, this result being secured by providing an opening in a collapsible bellows to which the image is directed in focusing. Another object of the invention is to improve the casing construc tion in cameras of the above type so that the casing may be more inexpensively manufactured. Still another object of the invention is to provide an improved manner of supporting a lens-board support in open positions. A further object of the invention is to improve the construction of a focal plane shutter so that the length of the latter may be materially reduced, and the different speeds may be more quickly obtained. A still further object of the invention is to construct and arrange the parts through which the operations are produced so that the user of the camera cannotunanipulate the parts out of their intended order of operation.

To these and other ends, the invention consists of certain parts and combinations of parts, all of which will be hereinafter described, the novel features being pointed out in the appended claims.

In the drawings Figure 1 is a vertical section through a camera constructed in accordance with this invention, the parts being in the positions which they occupy prior to the focusing of the camera;

Fig. 2 is a perspective view of the frame on the collapsible bellows through which the image is directed to the focusing screen;

Fig. 3 is a section on the line aa,'Fig. 1;

Fig. 4 is a perspective View of the lensboard support;

Fig. 5 is a section on the line 6-6, Fig. 1;

Fig. 6 is a sectional view showing the camera in folded condition;

Fig. 7 is a detail view of one of the guides for the plate holder;

Fig. 8 is a View of the operating devices in set position;

Fig. 9 shows the position of the operating devices during focusing;

F i 10 shows the operating devices in the positions they occupy after exposure;

Fig. 11 is another view of the operating devices in the positions shown in Fig. 9;

Fig. 12 is a detail view of the device which effects the release of the shutter;

Fig. 13 is a section on the line c-c, Fig. 1;

Fig. 14 is a section on the line d-d, Fig. 13;

Fig. 15 is an enlarged detail view of the shutter operating and releasing mechanism;

Fig. 16 is an enlarged detailed view of the spiral which controls the shutter; and

Fig. 17 is a section on the line 6-6, Fig. 13.

The casing of the camera may be formed in any suitable manner but, in the present instance, a single sheet of metal forms the bottom wall 1 and the rear wall 2, together with a portion 3 of the top wall, the forward edge of said sheet being rolled at 4: to provide part of the hinge of the lens-board support 5 to be hereinafter described, While the upper edge is turned downwardly or inwardly at 6. A second sheet of metal forms a partition wall 7 arranged parallel with the rear wall 2 to form a space between them,

its upper edge being engaged bytheflange: 6 and its side edges being turned forwardly at- 8 to-form sidewalls-the forward edges of;

said side walls being-turnedinwardly-at 9.- Blocks 10 are'inserted between the rear wall 2 and the partition? toclose the space be'-- tween these two parts.

The rear wall is provided with an opening ll'and the inner faces of the'blocks 10 coincide with the vertical sides of this opening-- while the partition 7 is provided with an opening coincident with the opening 11 and

rollers

15 and 16 respectively on whichthe curtain shutter 17 is mounted, the ends of the flanges 12 being spaced at 13 from the rear wall 2 in order to provide a passageway through which the curtain shutter may pass.

Any suitable means may be employed for holding the sensitized material. 111 this instance, a metal plate 18 is secured to the rear wall. 2 and has

flanges

19, 20 and 21 thereon, the flange 20 being turned inwardly to serve as a guide for the plate holder, and a flange 21 having a guide 22 operating over the upper edge thereof and pivoted at 23 on a shaft which is journaled in lugs on the plate 18. A coiled spring 25 serves to move the guide flange 21 toward the guide flange 20 and light-excluding material 26 is arranged on the plate 18 about the opening 11.

The lens-board support 27 is preferably formed of sheet metal with side flanges to strengthen the same in one direction and apressed-up rib 29 for strengthening the board crosswise. One edge of the board is rolled at 30 to provide sleeves which turn on the hinged pintle 31, the latter extending also through the sleeves 1 on the bottom member 1. At the rear of the lens-board support lateral extensions 32 are provided at opposite sides of the support, these extensions having flanges 33 for cooperating with the inner faces of the inwardly-turned flanges 9 on the side walls 8 to limit the downward swinging of the lens-board support. Also formed on the extensions 32 are cam faces 3% adapted to ride against the edges of the flanges 9 in ord r to press the extensions 32 toward each other, so that shoulders 35 may engage the front faces of the flanges and hold the lens-hoard support in its lowest or supporting position. By pressing inwardly on the yielding extensions 32, these shoulders 35 may be carried out of engagement with the flanges 9 and the lens-hoard support swung to a closed position where the flanges 28 are received between the flanges 9. The lens-board support may be held in a raised position by a projection 36 struck up therefrom and received within an opening 37 on the flange of a flanged cover 38, which closes the space between the upper ends of the side walls 8 and is hinged at 39 in proximity to the upper end of the partition 7. r

The lens-board or carrier 10, which carries the lens 11, is provided with a plate l2 at its lower part formed with iir-rvardlyturned flanges 43 at opposite sides, received within opposed channels a l formed in guides secured to the lens-board support in parallel relation. Within the casing, channels 16 are provided on guides a? for receiving the guide 13, when the lens board 10 is moved within the casing. A collapsible bellows 48 is connected at one end to the lens board and at its other end at 19 with the partition 7' about the opening in the latter.

It is desirable that this bellows or collapsible chamber "etween the lens and the partition 7 shall collapse inwardly along its vertical sides and, to tnis end, said sides are each reinforc d by two spaced strips 50, and an arm 51 on a coiled spring 52 acts on the bellows between the reinforcing portions with the idea of automatically expanding the side wall as the lens support 10 is withdrawn from the casing. Before moving the lens hoard back into the casing, the side walls of the bellows are pressed inwardly against the actions of the springs 52.

A feature of this invention is the provision of means whereby the line of vision betw en the reflector and the screen or ground guise may extend through the collapsible chamber or bellows so that the camera may be constructed in more compact form. T his is effected, in this instante, by securing the reflector 53 to a rod 5 1 journaled in bearing sleeves 5 1-, o {121i} the reflector will, in one 4, n, ClOoG "he opening in the partition 7 to prevent tle assage of light from the lens to the sensitized in terial. Flanges 53 are provided on opposite sides of the reflector to enter grooves 53 in the blocks 10 to further exclude light when the reflector is in the position shown in Pi 1.

e screen or ground gla s ably secured in. end I s hich is held by a central bolt lll lttlllg the ground glass to be slightly about an. axis longitudinal y of, for the purpose of receiving an image from the reflector free from distortion. Slots are provided in the side frames to oe rz'tit the vertical. adjustment of the ground for focusing the image on the ground glass or screen. The side frames 56 are secured to supporting plates 5 which have arms 60 at their lower ends attached to the side walls 8. so attached to these side walls above the bellows or collapsible chamber is a partition ('31 having an opening directly below the screen flanges 62 being bent downwi dly, at opposite ends of srid open' to serve as guides for a frame on the bellows to he iater d scribed.

For the pur elding the screen or ground a hood 63 is provi led, the lower l the sci e-..

V against the the upper porlable so that the su ng to inclose lass as shown in 1g plates 59 in a cover or clos 4. T 1 the hood ano i fith the end a r *1 view or oroviding ootical 1. connection act .t e around vc ass I: 14' i V} in Q n""''' otter W, its the ltl/Lei shown in dotted lines in .41 1.1. a all or. the collar 31b ie chan frame 111 has a slight movement with reference to the disk 105 without engaging the drum 108, this movement being provided in order that the detent 109 may ride over the stop shoulders 107 and 108 without disconnecting the winding drum 98 from the curtain roller shaft 115. On the periphery of the drum 105, two

characters

105 and 105 are provided, one indicating the position of the shutter operating mechanism for instantaneous exposure and the other indicating the position of the shutter operating mechanism for time exposure, both of these characters being visible through an opening 105 in the camera casing.

Before the finger piece 100 can be pulled to set the curtain shutter, the operating member 71 must be shifted to close the opening in the partition 7, as in all other positions the operating member 71 overlies the finger piece 100 to prevent the operation of the latter while the reflector isaway from the position in which said reflector excludes light from the sensitized material. As the operating member 71 approaches set position, it moves in the path of the arm 113 so as to hold the oscillatory member 111 in the position where the detent 109 is in the path to engage with one of the

projections

107 or 108, and the arms 112 will lie so that the spring 101 will maintain the clutch faces 103 and 104C in engagement. When the drum 98 is turned, through pulling the cord 99, motion is transmitted to the disk 105, one complete pull of the cord causing one end of the detent 109 to travel in the groove 106 until it engages the stop 107, and another complete pull of the cord causing the detent 109 to travel farther in the groove until it engages the stop 108. The stop 107 holds the curtain in position for instantaneous exposure whereas the stop 108 holds the curtain in position for time exposure. The finger piece 100 after being released returns to nor mal position under the action of the spring 102. Upon the release of the operating member 71 the device 115 will engage with the rear face of the arm 113 after the extension 114 has moved out of the path of said arm. This engagement between the device 115 and the arm 113 swings the oscillating frame so that the detent 109 is moved out of the path of the shoulder 107 and, at the same time, the drum 102 is disconnectechfrom the curtain roller 15 thereby permitting the spring 89 to wind the curtain on the roller 16 and cause the exposure opening 86 to travel across the face of the sensitized material, thus producing instantaneous exposure.

For effecting time exposure the device 115 is disconnected from the operating member 71 by withdrawing the projection 117 from the slot 118. The operatingmember 71 is shifted to the position shown in Fig. 8, and a cord 99 is pulled twice in "order that the detent 109 will engage the stop shoulder or lug 108. This carries the time exposure opening 86 of'v the curtain shutter so that it coincides with the opening or aperture in the partition wall 7. When an exposure is to be made, the two detents 7 6 and 80 are simultaneously operated to release the reflector 53 in order to carry the same quickly from' the position shown in Fig. 1 to the extreme upper position where it closes the opening 64. After the desired exposure has been made, the curtain shutter is released by pressing on the deflected arm 113 which shifts the de tent 109 out of the path of the

stops

108 and 107, permitting the curtain to wind on the drumv 16.

A camera constructed in accordance with this invention has a casing which may be inexpensively formed from sheet metal. Its lens-board support is of novel construction and is adapted to be formed from one piece of metal with the supporting devices which maintain .it in open position. These supporting devices are of novel construction and are easily manipulated. The reflector directs the image through an opening in the collapsible bellows and in this way it is possible to reduce the size of the camera. The curtain shutter has but a single exposure opening for the different durations of exposure and the speed of the shutter is controlled 'by a separate mechanism. The devices which control the camera are so arranged that it is impossible to manipulate them out of their intended order of opera tion.

Vhat I claim as my invention and desire to secure by Letters Patent is:

1. A camera casing embodying two pieces of sheet metal, one of which is'bent to form a bottom wall, a rear wall and a portion of the top wall, and the other of which forms a partition wall substantially parallel with the rear wall and side walls projecting forwardly from the opposite edges of said partition wall, the rear wall and the partition wall being provided with openings and the partition wall having flanges extending rearwardly from the upper and lower edges of its opening to provide chambers above and below said flanges and a bottom wall extending forwardly beyond the partition wall to form with the side walls a bellows,

chamber in advance of the partition wall,

a bellows in the bellows chamber, and a retion for engaging with the camera casing to support the lens-board support in open pos1t1on.

3. In a camera, the combination with a casing, of a. hinged lens-board support provided with yielding projections at opposite sides near its ends, said projections each having a device thereon for limiting the opening movement of the lens-board support, and a device for preventing the closing movement of the lens-board support.

4:. In a camera, the combination with a casing having inwardly-turned portions on opposite sides of the opening for the lensboard support, a hinged lens-board support for closing said openings, yielding extensions on the lens-board support, outwardlyextending portions on said extensions for cooperating with the inner faces of the inwardly-extending portions on the casing, and cam portions having shoulders, said cam portions riding on the inwardly-extending portions of the casing in order to cause the said inwardly-extending portions of the casing to engage behind the shoulders and lock the lens-board support in open position.

5. A camera comprising a casing having a partition therein provided with an opening, a shutter arranged on one side of the partition. a bellows extending from the other side of the partition and provided with an opening in one of its walls, a lensboard connected to the bellows, a screen mounted in the casing above and independently of the bellows and over the opening in said bellows when the latter is extended, and a reflector for directing rays from the lens to the screen through the opening in the bellows.

6. A camera comprising a lens-board, a

shutter, a bellows interposed between the shutter and the lens-board, and provided with an opening in the wall thereof. a hood having its lower end supported independently of the bellows and arran ed to have the opening of the bellows brought to register therewith when the bellows is expanded. and a reflector adapted to be positioned to direct an image from the lens to the hood through the opening in. the bellows.

7. A camera comprising a lens-board, a shutter, a bellows interposed between the shutter and the lens-board, and provided with a frame in one wall having an opening, springs acting on the bellows on opposite sides thereof below said frame to expand the bellows. and a reflector adapted to direct an image from the lens to the opening in the frame.

8. A camera comprising a lens-board, a shutter, a bellows interposed between the shutter and the lens-board and provided with a frame in one wall having an opening,

two pairs of stiffening strips secured to opposite walls of the bellows to cause the bellows to fold on lines between the adjacent edges of the strips, and a reflector adapted to direct an image from the lens to the opening in the frame.

9. A camera comprising a casing, a lens board, and a collapsible bellows arranges between the casing and the lens board and having a rigid portion adjacent its inner end adapted to swing downwardly to lie between the lens board and the casing, said bellows also having flexible walls below said rigid portion itoldable inwardly, the bellows being flexible from said rigid portion to the lens board to permit the downward swinging of the rigid portion.

10. A camera comprising a casing, a lens board, a collapsible bellows arranged between the casing and the lens board and having a rigid portion adjacent its inner end adapted to swing downwardly to lie between the lens board and the casing, said bellows also having flexible walls below said rigid portion foldable inwardly, the bellows being flexible from said rigid portion to the lens board to permit the downward swinging of the rigid portion, and springs for expanding said flexible portions below the rigid portion of the bellows.

11. A camera having a focusing screen, and a single means for securing said screen in different tilted positions on the camera as well as in different positions toward and from the lens.

12. In combination in a camera, a lens, a shutter, a detent for holding the shutter in set position, a screen, a movable reflector arranged to direct an image from the lens to the screen and movable to three positions, one to close the camera against the admission of light rays from the lens to the sensitized material, another to direct an image from the lens to the screen, and another to out off rays from the interior of the camera by way of the screen, and a device moving with the reflector and holding the shutter detent against movement while the reflector is directing an image on the screen.

13. In combination in a camera, a lens, a shutter, a detent for holding the shutter in set position, a screen, a movable reflector arranged to direct an image from the lens to the screen and movable to three positions, one to close the camera against the admission of light rays from the lens to the sensitized material, another to direct an image from the lens to the screen, and another to cut ofl rays from the interior of the camera by way of the screen. a device moving with the reflector and holding the shutter detent against movement while the reflector is directing an image on the screen, and a device moving with the reflector and shifting the shutter detent when the reflector has cut ofi' the rays from the screen.

14. In combination in a camera, a lens, a shutter, a detent for holding the shutter in set position, a screen, a movable reflector arranged to direct an image from the lens to the screen and movable to three posit ons, one to close the camera against the a 1-- sion of light rays from the lens to the sensitized material, another to direct an image from the lens to the screen, and another to cut off rays from the interior of the camera by way Of the screen. a device moving with the reflector and holding the shutter detent against movement while the reflector is drecting an image on the screen, and a device moving with the reflector and shifting the shutter detent when the reflector has cut otii the rays from the screen, said last named device being movable out of operative position in order that the reflector may cut oil the rays "from the screen without releasing the shutter.

15. In a camera, a lens, a curtain shutter, a spring for moving the shutter in one direction, a roller on which the shutter is wound, a device adapted to turn the roller to wind the shutter thereon, a screen, a movable reflector movable to three positions, one to cut off the rays from the lens to the sensitized material, another to direct an image from the lens to the screen and still another to out off the rays to the interior of the camera by way of the screen, and means moving with said reflector for covering the operating portion of the roller-turning device when the reflector is away from the position in which it cuts oil the rays from the lens to the sensitized material.

16. In combination in a camera, a lens, a shutter, a detent for holding the shutter in a certain position, a screen, a movable reflector ar anged to direct an image from the lens to the screen and movable to three positions, one to close the camera against the admission of light rays from the lens to the sensitized material, another to direct an image from the lens to the screen, and another to cut off rays from the interior of the camera by way of the screen, and a device moving with the reflector and shifting the shutter detent when the reflector has cut otl the rays from the screen, said device being movable out of operative position in order that the reflector may cut otl the rays from the screen without releasing the shutter,

17. In a camera, alens, a shutter, a spring for moving the shutter in one direction, a device for moving the shutter in the other direction, a screen, a reflector movable to three positions, one to cut off the rays fromthe lens to sensitized material, another 'to direct an image from the lens to the screen, and still another to out off the rays to the interior of the camera by way of the screen, and means for preventing the opera tion of the shutter when the reflector is away from the position inwhich it cuts off the rays from the lens to the sensitized ma terial.

DAVID A. SINE.