Abstract: A bass drum having a curved side wall and two heads, sound muffling means comprising a pillow having longitudinally spaced opposite ends and length between the ends greater than the spacing between the heads; the pillow having lateral width which decreases away from each of the opposite ends toward the center of the pillow; the pillow having a surface which is outwardly and widthwise convex along the pillow length to engage the drum curved side wall of the inner side thereof, as the pillow is endwise compressed by engagement of the pillow opposite ends with the heads.

Abstract: A shutter device disposed above a camera, a rack is caused to move up and down by a motor and has a lower end caused to depress the shutter release button of the camera, a conductor is slidably disposed on the rack and a conductor is fixed on the rack, a lever is formed on the rack, and a switch is disposed beside the lever, the conductors are separated when the button is depressed by the rack so that the motor is caused to rotate in a reverse direction and so that the rack is caused to move upward, the motor is stopped when the switch is actuated by the lever.

Abstract: An overlay is described for a keyboard wherein the keyboard includes a plurality of convex, depressible keys that extend above openings in a panel surface, each key having an associated function indication. The overlay comprising a molded plastic, planar member sized to cover substantially the extent of the keyboard, and having both keyboard and user sides. The keyboard side exhibits a plurality of waffle-like convex chambers created by orthogonal intersecting walls, each convex chamber surrounding a corresponding key and having a resilient ceiling member positioned over the key. When the resilient ceiling member is depressed by a user, the underlying key is likewise depressed and actuated. The user side of selected ones of resilient ceiling members, indicate modified key functions.

Abstract: In a transfer-type image recording device utilizing a recording medium comprising a continuous-form recording sheet and a cut-form developing sheet, the former is arranged to be fed in a predetermined speed, coated with a plurality of photo and pressure sensitive microcapsules each containing a dye-precursor and a component to change the strength thereof when exposed to light. And the latter is designed to be coated with a developer material which is reactable with the dye-precursor. In the image recording device, a visible image is obtained by transferring an image having been formed on the recording sheet onto a surface of the developing sheet. A roller member for peeling off the microcapsules from a surface of the recording sheet after a transfer operation of an image is executed. Thus, any recognizable image on the recording sheet, for example, a visible negative image formed by the remained microcapsules, is erased after the visible image is obtained on the developing sheet.

Abstract: A focusing screen suited to be used in the camera, having three plane portions of different heights in each of small areas, wherein the plane portion A, the plane portion B and the plane portion C are arranged in the order from the lowest height, and letting the height of the plane portion B measured from the plane portion A be denoted by d.sub.B, the height of the plane portion C from the plane portion A by d.sub.C, and the area ratios of the plane portions A, B and C to the entire area by S.sub.A, S.sub.B and S.sub.C (where S.sub.A +S.sub.B +S.sub.C =1) respectively, the following conditions are satisfied1.6<d.sub.C /d.sub.B <2.50.35<S.sub.B <0.5whereby the color tint is minimized for good optical performance.

Abstract: Containers for receiving, holding and transporting a pair of drummer's cymbals from a hi-hat stand; containers for receiving, holding and transporting large diameter circular, sectionally arcuate objects in pairs such as musical cymbals of identical diameter taken from a hi-hat stand; receiving, containing and carrying containers for two paired, opposed cymbals taken from a hi-hat cymbal stand; containers adapted to receive, hold, contain and protect a pair of opposed, equal diameter cymbals actually mounted on a hi-hat cymbal stand, the containers not only holding and carrying the cymbals therewithin, but also transportable and carryable with the hi-hat stand, per se.

Abstract: A tremolo device for an electric guitar comprises a movable block, to which the strings are anchored, which is swingable about a swing axis perpendicular to the strings. The block has counter balance tensile springs for providing a tension on all of the strings, whereby an equilibrium is established between the tension imposed by the counter balance tensile springs and the tension imposed on all of the strings, whereby the block is kept at a neutral position. A tremolo handle is rotatably attached to the block, and is rotatable between an operative position at which the handle can be manually operated by a player, to produce a movement of the block about the swing axis and change the tension imposed on all of the strings, and an inoperative position at which the handle cannot be accidentally touched by the player.

Abstract: An image recording apparatus which uses one type of photo-sensitive material to transfer an image from a original having a different density scale. The original image is given a primary exposure to the photo-sensitive material and the photo-sensitive material is given a direct exposure as an auxiliary exposure. After a certain amount of auxiliary exposure has been performed, the ratio of the amount of auxiliary exposure with respect to the amount of the total exposure of the part on the photo-sensitive material corresponding to the high density part of the original, is small, but because the ratio with respect to the amount of the total exposure of the part on the photo-sensitive material corresponding to the low density part of the original is large, the apparent .gamma.-characteristics of the photo-sensitive material is lowered, and a favorable image corresponding to the gradation of the original can be obtained.

Abstract: A print control apparatus in a camera includes a camera provided with setting means for setting multiple printing information and recording means for recording the multiple printing information set by the setting means, or a printing apparatus provided with reading means for reading the multiple printing information recorded by the recording means and control means for effecting multiple printing in conformity with the multiple printing information read by the reading means.

Abstract: A variable focal length camera having at least one auxiliary lens system which is inserted into or withdrawn from the optical axis of a main lens system. A lens holder holding the auxiliary lens system is swingably mounted on a shaft extending in the direction of the optical axis, and moves forward and rearward along the shaft for focus adjustment. In order to cancel the component of a force in the direction of the optical axis exerted by a tool by which a focus adjusting device is operated, the shaft is arranged to be motionless in the direction of the optical axis. According to a preferred embodiment, on the intermediate portion of the shaft, there is formed a thread meshing with a base portion of the lens holder so that the position of the lens holder is adjusted through rotation of the shaft, and after this lens position adjustment the base portion is fixed to the shaft.

Abstract: There is disclosed an exposure control apparatus for a camera, enabling appropriate exposure control for varied photographing situations. The apparatus determines the optimum exposure value, referring to various conditions including the season and time of photographs, photographing location, sunrise/sunset times and so on.

Abstract: A technique for creating an image onto a photosensitive medium in a photoprinting process involves scanning a phototransparency for its densitometric information. Light from a lamp source is transmitted through an LCD pad onto a photosensitive medium to produce an image. The exposure of the image is regionally varied to achieve optimum results by activating individual LCD pixels to control the amount of light exposed to the photosensitive medium. A microprocessor calculates the activation pattern for the pixels based upon the densitometric information of the phototransparency.

Abstract: A speed control device used in an image forming apparatus which includes a detector for checking whether the backing of an image receiving sheet is made of ordinary paper or OHP film, and is capable of controlling the rotating speeds of the motors depending upon the type of the image receiving sheet, i.e., an ordinary paper type or an OHP film type, thereby ensuring that the thermoplastic resin is molten to achieve optimum fluidity irrespective of the type of image receiving sheet.

Abstract: A lens-fitted photographic film package has a talking lens, a shutter and a film advancing mechanism incorporated therein and is loaded with film. The taking lens is disposed at the upper side of a casing of the film package and a first mirror is disposed behind the taking lens. A second mirror is disposed below the taking lens inside the casing. A Z-shaped exposure light path is thus formed by the first and second mirrors. On the inner wall surface of an exposure chamber for conducting the exposure light, there are formed a number of ridges extending in a direction parallel to the path of travel of the exposure light which reduce internal reflection within the exposure chamber. The mirrors are pressed by respective mirror hold-down members from the outside against respective mirror frames, and the mirror hold-down members are shaded with respective shading covers from ambient light.

Abstract: A photographic camera includes a lens carrier with alternative taking lenses having shorter and longer focal lengths. The lens carrier is pivotable relative to the camera body between a storage position in which the two lenses are concealed within the camera body and respective use positions in which the two lenses alternatively are located for picture-taking.

Abstract: A solenoid stack for a piano incorporating an array of striker solenoids, each of which includes an outer shell, a coil disposed within the outer shell and having an axial passage extending through its entire length, an inner shell within the coil and a slug moving axially within the inner shell in response to selective energization of the coil. The slug is provided with a passage through its length, and the passage includes an internally threaded section which a threaded push rod engages such that an upper end extends above the slug and carries a pusher tip. An adjustable stop member is provided at the bottom of the slug to limit the stroke of each individual solenoid assembly. A mounting plate includes an array of apertures for receiving the striker solenoid assemblies (in threaded, press-fit or the equivalent engagement) within the keybed such that each solenoid assembly is juxtaposed with respect to an individual keytail.

Abstract: A photographic film is transported by a pair of endless belts past an exposure aperture and a pair of magnetic heads. The heads are mounted in a film platen in alignment with the belts so that the belts provide backup support to the film during recording and/or reading information on the film.

Abstract: A photograph processing device comprises an exposing section for printing an image on a light-sensitive material in accordance with exposure conditions, a processor section for performing developing, fixing, washing and drying operations with respect to the printed light-sensitive material, a density measuring unit provided in the vicinity of the light-sensitive material exit side of the processor section for photometering the light-sensitive material to provide an image density signal free from the influence of temperature that is caused by subjecting the light-sensitive material to the drying operation, and an exposure condition correcting unit for correcting the exposure conditions in accordance with the image density signal outputted from the density measuring unit.

Abstract: A keyboard in which a stopper portion of an upper limit stopper of a black key detours an upper limit stopper of an adjoining white key so as to lie away from the black key side by side with a stopper portion of the upper limit stopper of the white key.

Abstract: A solenoid stack for a piano incorporating an array of striker solenoids, each of which includes an outer shell, a coil disposed within the outer shell and having an axial passage extending through its entire length, an inner shell within the coil and a slug moving axially within the inner shell in response to selective energization of the coil. The slug is provided with a passage through its length, and the passage includes an internally threaded section which a threaded push rod engages such that an upper end extends above the slug and carries a pusher tip. An adjustable stop member is provided at the bottom of the slug to limit the stroke of each individual solenoid assembly. A mounting plate includes an array of apertures for receiving the striker solenoid assemblies (in threaded, press-fit or the equivalent engagement) within the keybed such that each solenoid assembly is juxtaposed with respect to an individual keytail.