Abstract: A case (1) for a musical instrument, in particular a stringed instrument, in particular a guitar, having means (3) for displaying the humidity inside case (1). The air temperature inside case (1) may be also be displayed by display (4), so that case (1) need not be opened to check displays for humidity and temperature inside case (1). Both humidity and temperature may be read from the same hygrometer (2) in one or more embodiments of the invention. Means may be provided by eg. a moist sponge inside case (1) to maintain air humidity inside case (1). Displays (3) and (4) may be analog or digital or both.

Abstract: A camera (1), in particular an electrically powered digital camera (1), equipped with a removable lens (6), the camera being provided with a transparent element (3) such as a thin pane of glass (3), mounted behind removable lens (6), the pane of glass (3) being mounted in such a way on camera (1) that dust particles entering lens port (8) when removable lens (6) is removed from camera (1), settle on the front of glass pane (3) and cannot enter camera (1) and settle on an image gathering element (2) which may be a digital sensor (2), camera (1) being a camera for motion such as a video camera (1) or a camera (1) for still pictures and possibly video. Glass pane (3) may be mounted on a unit behind lens (6) to seal or substantially seal camera (1) from dust entering camera (1) through lens port (8) and settling on image sensor 2.

Abstract: A device for transporting film (5), in particular unperforated film (5) without slippage, preferably intermittently, powered by a power source, preferably an electric motor (8), having at least one element such as a needle point (2) mechanically engage film (5) by entering it and transporting film (5) from a start position to a stop position. An element such as a pressure plate (7) may be used in one embodiment to hold the film steady during exposure and a movable element (7) may act on the film to hold it during exposure. At least one mark may be exposed on film (5) to aid in picture registration. At least one roller (31) controls the length of loops of film (5) before and after the aperture. The roller (31) may transport the film (5) by friction, or, in another embodiment the roller (31) may have radially mounted needles (2) which penetrate film (5) to hold film (5) while transporting it.

Abstract: In a revolver, a sleeve is attached to the outside rear section of the barrel and can be turned to adjust abutment with a forward portion of the cylinder of the revolver.

Abstract: A string instrument, such as a guitar, includes an instrument body, a neck portion, pivotably coupled to the body by means of a joint, to permit pivotal movement of the neck portion between an operative and a folded position, a string mount moveably mounted on the body, at least one string, one end portion of which is secured to the string mount and the other end portion of which is secured to the neck portion, and drive means for moving the spring mount, which is coupled to the spring mount and the joint. The drive means moves the spring mount in direct response to pivotal movement of the neck portion about the joint, so as to maintain the original length and tension of the at least one string, when the neck portion is moved between the operative and folded positions thereof.