Abstract: A walking ladder is provided and consists of a spring loaded tripod suspended from a step ladder which converts the step ladder into a self moving support. A person standing on the step ladder can shift their weight from the ladder to the tripod and then back onto the ladder while always remaining on the ladder so as to reposition the ladder anywhere in the immediate area of the tripod.

Abstract: A variable pitch harp is provided which allows the player to change the pitch of all of the plucked, struck or bowed strings at the same time as he is playing. In the first embodiment, the bridge of the harp is moved up or down as the player moves the harp towards or away from his body and the sound is amplified electronically via an acoustical pickup. In the second embodiment, a sounding drum is provided whose resonance provides acoustical amplification so that the instrument may be played without electronic amplification. In the third embodiment an electronic version is provided in which the bridge is fixed-mounted but the instrument itself may be flexed to change tone. For all embodiments a quick tuning attachment is also provided.

Abstract: There is provided a novel stringed musical instrument for direct attachment to an electronic transducer. An elongated member is mounted on a frame on which is also mounted an upright bridge having string gripping means for positioning, gripping and passing the vibrations of a plurality of strings connected on one side of the bridge to the elongated member and on the other side of the bridge to string holding means for holding and tensioning the strings. An electronic transducer is mounted at the bridge means, which passes vibrations received from the plucked strings to the transducer, from which the sounds are amplified and sent to speakers. In addition, hand grips on the frame are disposed proximate to the bridge means, which configures the gripping means so as to position the strings within finger reach of the hand grips.