Abstract: In an electric motor drive device for a camera having first and second one-way clutches arranged to transmit a driving force either to a film winding transmission member or to a film rewinding transmission member by a change-over operation on the rotation of a driving motor between normal and reverse rotating directions, a charge cam provided between the first one-way clutch which transmits a driving force of the rotation of the motor in the normal direction to the film winding transmission member and the winding transmission member is arranged to rotate together therewith. The charge of a charge mechanism disposed within the motor drive device resulting from the rotation of the charge cam is arranged to be effected approximately in phase with the charge of a charge mechanism which is disposed within the camera and is arranged to be driven by the winding transmission member.

Abstract: A cribbage board is provided with means to indicate when a losing player has failed to tally a given number of points in a game. The indicators are released to an indicating position by the placement of a tally pin in final socket on the game board surface.

Abstract: In the disclosed viewfinder, a focusing plate receives light from an objective via a reflex mirror, and after focusing, passes light to an eyepiece via a penta prism. A by-pass optical system receives light from outside the view field of the viewfinder and directs the light through an information carrier outside the optical path of the photographic light and into the penta prism so that the information can be displayed close to the view field of the viewfinder.

Abstract: An interchangeable objective with a variable lens aperture for a camera has a stationary support member and a diaphragm-operating member rotatable about an axis between first and second annular positions relative to the stationary support member. A first elongated leaf spring is mounted on the stationary member to bear against the diaphragm-operating member along a first plane perpendicular to the axis. A second elongated leaf spring is mounted on the stationary member to bear against the diaphragm-operating member along a second plane perpendicular to the axis. The second plane is spaced from the first plane in the direction of the axis. A locking groove is formed in the diaphragm-operating member so as to alternatively receive the first and second leaf springs in locking engagement when the diaphragm-operating member is positioned at the first and second angular positions, respectively.

Abstract: An acoustical device for reducing sound pressure levels and the potential for noise induced hearing loss comprising an arched shaped acoustic pad having an interior or frontal concave sound absorption panel and an exterior or rear convex sound shield supported by an interior frame member. Sound attenuation is accomplished by enclosing the frame with at least one layer of resilient material having a high sound absorption coefficient. The acoustic pad is affixed to the back of a musician's chair by means of a mounting device which provides a high degree of flexibility in positioning for optimal directional protection of the performer.

Abstract: An apparatus, such as in a copying machine, by which an original sheet and a light-sensitive sheet can be fed along separate feed paths toward and onto one another and then one upon another through a station for exposure of the light-sensitive sheet to a light image of the original sheet is provided with a control system, including a separating device disposed to act on the sheets passing from the exposure station, whereby after an exposure the original sheet can be led away from the light-sensitive sheet irrespective of the relative position of the sheets fed for the exposure. A detector sensing the leading edge of an original sheet in its own feed path, activates the control system which in turn puts the separating device into operation after the lapse of a period of time corresponding to the time of transport of the leading edge of the original sheet from the detector up to the separating device.

Abstract: A musical instrument comprising a circular rigid base vibrator having a plurality of sound bars arranged in a spaced, circular pattern around the center of the base and on one side of the base, with a pattern guide rotatably mounted coaxially with the base, the pattern guide having openings therein for permitting those bars which sound notes in a diatonic scale or major chord to be struck, while covering or masking other bars whose sounds are not within such scales or chords. The pattern guide is readily interchangeable with similar guides defining other scales or chords.

Abstract: An apparatus is disclosed comprising a movable member and means for mounting the movable member for movement along a given path. The mounting means defines a surface adjacent the given path. For generating repelling magnetic forces which act on and between the movable member and the surface so as to facilitate relative movement therebetween, there is provided permanent magnetic fields in operative relationship with the surface and the member.

Abstract: The electromagnetic shutter consists of a plurality of shutter sectors made of plastic material, printed electric coils operatively coupled with the shutter sectors, and permanent magnets fixed to the shutter at positions where the permanent magnets cooperate electromagnetically with the printed electric coils, respectively, so that, when electric current is supplied for a predetermined time period to the printed electric coils, electromagnetic force is generated by the printed electric coils so as to open the shutter sectors for the predetermined time period and thereafter closed to complete a required exposure. The printed electric coils are formed on the shutter sectors or on a sector ring coupled with the shutter sectors by vacuum evaporation of metal or by sticking a foil of metal.

Abstract: A camera mounting system which allows photographs to be taken from inside a surveillance or observation vehicle, with unlimited horizontal camera traverse, and an improved field of view. The mounting system comprises an assembly which fits into a hole in the roof of a vehicle or the like, and has a telescoping cap portion which, when in its retracted position, covers the hole, and also extends outwardly from the roof. A camera mounting bracket is releasably attached to the cap portion and has a mirror angled to reflect light from outside the vehicle to a camera mounted on the bracket. The bracket is rotatable within the hole.

Abstract: A twin camera shoulder carry stabilizer device comprising a shoulder stock having mount means on opposed surfaces thereof for supporting opposed cameras. The forward part of the device can be rotated axially to bring either of the two cameras into immediate upright operative position respective to the photographer. Brackets are provided for holding the cameras and may be adjusted forward or backward according to the requirements of the photographer. Each camera is triggered by its own individual flexible release cable in the manner similar to a rifle trigger.

Abstract: The present invention is directed to a diaphragm for loudspeakers which is integrally constructed through the combination of a core material being formed as a disc-shaped solid construction through the independent or series of combination of a plurality of flat-plate pieces and disc-shaped skin materials each being approximately equal in diameter on the top face and the bottom face of disc-shaped core material, the core material and skin materials being made of either boron or beryllium, thus resulting in the higher efficiency, wider zone and lower distortion of the loudspeakers.

Abstract: Each key of a keyboard of an electronic musical instrument is mounted on a frame to be tiltable in the vertical direction and biased to a normal position by a return spring. Each key is incorporated with a weight member embedded in a cushion member. Preferably the cushioned weight member is mounted on the front end of each key and the cushion member is made of rubber. The cushioned weight member provides a refined responsive key touch sensation.

Abstract: In the disclosed auto-focus camera a focus detection system responds to light outside the range of wavelengths forming the camera image to produce an in-focus signal, and a drive signal generator that responds to the in-focus signal corrects the focusing for deviations based on the difference between the wavelength of the intended light and the imaging light.

Abstract: An electrophotographic copying machine comprising a device for detecting the size of a copy document on a document table. The device includes a light receiving element which is responsive to the positioning of a copy document on a document table for providing document size signals. A control circuit is responsive to the document size signals for detecting the size of the copy document.

Abstract: An annular groove formed on the inner surface of the porous sheet of an acoustical aircraft or jet engine liner spaced from the front edge and adjacent to the adhesive bonding material serves to prevent dislodgement of the entire porous sheet upon an impending peeling of the porous sheet. The groove also serves as a circuitous path for cracks propagating upstream from a fault manifested downstream therefrom.

Abstract: An aluminum electrolytic capacitor has a wound extended-foil section with the edges of one of the foils extending from one edge of the roll and the edges of the other from the other edge. These extended foils are deformed after the section is wound in such a way that they are stretched and a metallurgical bond is formed between adjacent edges. A low-inductance, low electrical series resistance (ESR) capacitor is obtained as a result. The deformation may be accomplished by frictional cutting using a diamond saw.

Abstract: A camera having a film counter for indicating the number of unexposed film units remaining in the camera. The film counter includes a rotatably mounted drum having a single row of teeth by which the drum may be sequentially indexed in a first direction subsequent to the exposure of a film unit. A pawl having first and second working surfaces limits rotation of the drum in a second direction thereby maintaining the drum in its newly indexed position. By removing one of the teeth, the second working surface is able to move into the space created by the removed tooth and into the path of movement of one of the teeth during rotation of the drum in the second direction to thus stop the drum in its newly indexed position.

Abstract: A folding camera including first and second housings pivotally mounted for movement between operative and inoperative positions and being interconnected by a flexible bellows. When the housings are in the operative position, areas of the bellows which would ordinarily be exposed to ambient light and to engagement by the fingers of a user are shielded therefrom by three planar, substantially rigid, opaque members which occupy a minimum of space when the housings are in the inoperative position.

Abstract: An apparatus is disclosed for recording color separations on a photographic film band. The apparatus comprises a feed mechanism having a film transport member arranged to selectively bring portions of the unexposed film from a feed spool mounted in a housing into an operative position for exposure in a camera adapted to receive selective filters for color separation. The feed mechanism is arranged to unreel the unexposed film band under constant tension from the feed spool and to displace selected film portions in contact with a support surface whereby to selectively bring these film portions into their operative position for exposure in the camera and return them to said housing after exposure.