Abstract: A camera with an automatic bracketing device for permitting photographing of a plurality of frames in group while exposure is stepwise changed under a certain exposure condition solves a problem which is caused when the number of frames to be photographed in a bracketing photographing mode is set larger than the number of remaining available frames of a film.The camera comprises means for calculating the number of remaining available frames based on the number of available frames of the film loaded and the number of photographed frames, means for calculating a proper exposure, means for setting the number of frames to be photographed in a bracketing photographing mode in which a plurality of frames are photographed with changing exposures, and means for setting the number of steps of exposure to be changed in the bracketing photographing mode.

Abstract: In separating one of a plurality of sheets stacked in a cassette from the remainder, a separation pad holder facing one side of the circumference of a sheet feed roller, which is rotatably driven, is urged in such a manner that a separation pad is brought into contact with or separation from the circumference of the sheet feed roller. Accordingly, an uppermost sheet can be pushed out in separation by friction force. When the sheet reaches a pair of sheet feed rollers, the separation pad holder can retreat with the interference of a projection formed in the separation pad holder by its own tension of the sheet across each circumference of the sheet feed collars and the pair of sheet feed rollers, thus eliminating friction generated between the separation pad and the sheet.

Abstract: A novel palladium-nickel alloy plating solution provides a uniform electrodeposited film with excellent gloss at a high electric current density. A palladium-nickel alloy plating solution comprises a water-soluble palladium salt, a water-soluble nickel salt, ammonia, an ammonium salt, and 3-pyridinesulfonic acid, which are solved in water. Further additives may be added in the solution.

Abstract: An image forming apparatus in which probability of sheet jamming is reduced and jammed sheet can be easily removed. The apparatus is provided with a guide plate, a movable guide plate defining a sheet feed passage therebetween, and a first sheet feed roller. A detachable sheet cassette is provided for attachment to a main body portion of the apparatus. In the sheet cassette, are provided a second sheet feed roller and a leaf spring which urges the second sheet feed roller toward the first sheet feed roller when the sheet cassette is attached to the main body portion. The sheet feed passage is opened by pivotal movement of the movable guide plate when the sheet cassette is detached from the main body portion, to thereby facilitate removal of the jamming sheet from the sheet feed passage.

Abstract: In a waterproof camera system of the type comprising a waterproof camera comprising a camera mechanism assembly (1) incorporated in a waterproof outer box (4) and a waterproof interchangeable lens (10) comprising an inner cylinder (11) and a waterproof outer cylinder (12) in which is housed said inner cylinder, the outer box is provided with an outer mount (6) and a circular opening (4A) is formed through a wall of said outer mount in coaxial relationship therewith and adjacent thereto. The camera mechanism assembly is provided with an inner mount (5). A first O-ring (15) is fitted over the outer peripheral surface of the outer cylinder which in turn is connected to the outer mount by means of bayonets. The inner cylinder is connected to the inner mount by means of bayonets.

Abstract: A waterproof camera having a detachable imaging lens system comprises a lens inner tube for holding an imaging lens, a watertight optical member for covering a front plane of the imaging lens, a lens outer tube for holding the watertight optical member and supporting the lens inner tube to permit relative displacement by a predetermined distance along an optical axis only, an inner mechanism support having a camera body mechanism including at least a film holder, an outer housing for housing the inner mechanism support therein, a first bayonet mount provided in the outer housing for removably supporting one end of the lens outer tube, a second bayonet mount fixed to the inner mechanism support to support the lens inner tube and having a mount reference plane contactable to a mount reference plane of the lens inner tube, spring means provided between the lens outer tube adn the lens inner tube for biasing the lens inner tube when the lens outer tube is mounted to the outer housing through the first bayonet mou

Abstract: A camera is provided with an automatic focusing apparatus in which an imaging lens moved for focusing is locked by an identical locking member in both the automatic and manual focusing operation. The focusing apparatus has a single locking member for locking movement of an imaging lens. The locking member is displaced at a predetermined position in accordance with a signal corresponding to a distance to an object in an automatic focusing mode, and is displaced at a position corresponding to a distance set by a manual distance setting member when the focusing mode is switched to the manual mode.

Abstract: An apparatus for displaying camera information in the view finder of a camera is provided with a sheet-like display member having plural display portions on which reference characters indicative of the camera information are depicted, respectively. A light emission array is disposed opposed to and spaced away from the display member. Each of plural light emission elements of the light emission array corresponds to the respective one of the display portions on the display member. The space between the light emission array and the display member is divided into plural regions each of which contains the light emission element and the corresponding display portion, so that any transmission of light between each adjacent region is prevented. The light from each of the light emission elements is condensed by a light condensing device and is projected toward the corresponding display portion through a light diffusion device disposed between the light condensing device and the display member.

Abstract: A method of repairing a refractory lining of a vessel lined with refractory by flame gunning process, in which a patching material consisting of refractory particles and carbonaceous fuel powder is flame-gunned together with an oxygen containing gas to fuse or semi-fuse the refractory particles in a region surrounded by high-temperature flame and struck against the surface of the refractory lining to produce a deposit layer of the refractory particles, is disclosed. In this method, a patching material having a higher mixing ratio of the fuel powder or only the fuel powder is flame-gunned at an initial stage of the repairing and subsequently patching materials, in which the mixing ratio of the fuel powder is lowered stepwise, are flame-gunned in order with the progress of the repairing, during which a blow rate of the oxygen containing gas is controlled in accordance with the change of the mixing ratio of the fuel powder in the patching material.

Abstract: In a camera of the type which is provided with a focal plane shutter having a group of opening blades and a group of closing blades and a light receiving element for metering the light transmitted through a photographing lens, the improvement comprises an additional light shielding member provided in the path of photographing light on the front side of the focal plane shutter relative to the transmitted light. The light shielding member is so disposed as to be able to reflect the photographing light toward the light receiving element. Retracting means brings the light shielding member to a position out of the photographing light path prior to exposure.

Abstract: A tuyere for blowing an agitating gas into molten steel is arranged in the bottom of an oxygen top-blown converter in order to improve the refining effect of molten steel and has a ratio of blow sectional area S (cm.sup.2) to inner peripheral length L (cm) of not more than 0.17, preferably not more than 0.125.

Abstract: A camera provided with first connecting means capable of being selectively coupled to second connecting means of a flash bulb unit and third connecting means of an electronic flash unit and having a first terminal connectable in common to a synchronizing terminal in the second connecting means and a tuning shutter time setting signal terminal in the third connecting means, a second terminal connected to a synchronizing terminal in the third connecting means, and a third terminal connected in common to ground terminals in the second and third connecting means includes a tuning shutter time setting circuit having its input terminal connected to the first terminal, and a protective circuit for the tuning shutter time setting circuit.

Abstract: In a flash photographing device which comprises a camera body and a flash gun adapted to be connected to the camera body during photography, there is provided a rod member for supporting the flash gun, a supporting member secured to the camera body, and holder means provided on the supporting member for rotation with the rod member. The holder means is displaceable between a restraining position for holding the rod member against sliding and rotating movement and a half-restraining position for holding the rod member for at least sliding movement upon application of an extraneous force on the rod member. The device further includes adjusting means provided on the supporting member for displacing the holder means between the restraining position and the half-restraining position, and positioning means provided to restrain the holder means from rotating at a plurality of locations when the holder means has been displaced in the direction of rotation.