Abstract: A music box movement having a mechanism to impede or cause rotation of star wheels, wherein spaced points on the star wheels pluck the tines of the musical comb to perform a desired series of musical tones. In its preferred embodiment, the mechanism comprises activating arms with rods having tips thereon, wherein the tips contact the surface of the star wheel and only permit rotation of the star wheel when the tips are withdrawn via activation of a computer-controlled solenoid. Alternatively, again via a computer-controlled solenoid, the mechanism actively causes movement of the star wheel by pushing against, or pulling via hooks, the star wheel points to cause rotation. In lieu of a solenoid, computer-controlled electromagnetically-engaged plates in communication with the activating arms are selectively utilized to adhere to a rotating drum, thereby moving the activating mechanism.

Abstract: An inventive structure of the reduction device of the spring driving musical movement comprises a musical movement base, a gear fixed base, a step spur gear, a bilateral gear and a friction unit; wherein the gear fixed base, formed from project plastic material, installs with a locating hole, two parallel concave grooves and a right-side bilateral gear installing groove thereon; and rivets with the musical movement base in a fixed position by the locating hole. After said step spur gear separately parallelizes in said parallel concave groove, said right-side bilateral gear installing groove and a left-side bilateral gear installing groove on the musical movement base were separately installed with a bilateral gear. And said friction unit locates on the musical movement base to make a worm thereon mutually and vertically engages with a left-side gear of the bilateral gear, to become a spring driving musical movement reduction device.

Abstract: A transmission mechanism for a music box having a plurality of ornaments coupled thereon includes a driving mechanism having a rotary wheel with an eccentric rod and disposed in the music box, a first support mounted in the music box and having a through hole, a connection rod having two opposite ends, a first elongated support member inserted through the through hole of the first support, secured on the first support and having one end coupled with an ornament and the other end secured on one end of the connection rod, a coupler having a first end connected with the other end of the connection rod and a second end coupled with the eccentric rod.

Abstract: A music box is arranged for increased compactness. The music box includes a comb having vibrating teeth, a drum with a rotational axis with a plurality of pins on an outer surface for engaging ends of said teeth, a coil spring having a winding shaft for driving the drum, an accelerating gear row for accelerating the rotation speed of the spring winding shaft, a braking member engaging with the gear row for braking and a base frame for transmitting the vibration of the comb to a mounting member. The rotational axis of the drum and the spring shaft are arranged vertical to the base frame and the spring shaft is substantially centered on the frame. The drum, comb, accelerating gear and brake are disposed about the centered spring shaft to provide a more compact arrangement.

Abstract: A music box including a base, a frame mounted on the base, a motor mounted on the frame, a drum installed on the base and including a cylinder provided with a plurality of protuberances, a gear having a recess, a plurality of fixing members on the recess and a square hole at a center of the gear, and a seat having a plurality of portions between every two of which there is a slot and each of which has a hook portion, one end of the cylinder being engaged between the fixing members and an inner edge of said gear, the seat being inserted into another end of the cylinder, a horizontal output shaft being formed at one end with a square portion and a plurality of knots close to the square portion, the horizontal output shaft being partially inserted into the cylinder through the seat with the square portion and knot engaged with the square hole of the gear and the hook portion of the seat respectively, and a vertical output shaft provided at a lower end with a cog meshed with the gear.

Abstract: A music box rotating drum body on which easy-to-read printing is formed without losing the circularity of the drum body, and a method for applying printing to a music box rotating drum body to make it possible to print a large number of characters without losing the circularity are provided. According to the present invention, a music box rotating drum body includes: a rotating drum made by a pipe material planted with a plurality of pins for flicking vibrating valves in accordance with a music program. The rotating drum has a silent area formed on it, where no pins are planted. The silent area has a character portion formed by combinations of character holes.

Abstract: A drum for a music box comprises a cylindrical drum body, a pair of end plates fixed to end faces of said drum body, one of the end plate having an center opening, and an external output shaft (14) positioned in the opening and projecting outside of the cylindrical drum body. A diameter of the opening is much greater than that of the external output shaft. The drum includes portions for engaging with the external output shaft for preventing axial and rotational displacement between the external output shaft and the end plates. The engaging portions are provided within the cylindrical drum body.

Abstract: A drum for a music box comprises a plate having a number of pins on its outer surface and a number of holes in its backface. The plate is bent to form a cylinder. The pins and holes are arranged in a coaxial fashion with each other. Each of the pins has a substantially uniform diameter from its distal end to proximal end. A depth of the holes is smaller than a thickness of the plate and is greater than half the thickness of the plate and is greater than half the thickness of the plate. A diameter of the pins is smaller than the diameter of the holes and is greater than half the diameter of the holes. The drum is preferably formed through a fine blanking method. Thus, the drum is suitable for mass-production in low cost with a high performance.

Abstract: A toy including a music playing device therein capable of playing various musics by exchanging a removable rotary means. The toy comprises a toy body, an electronic musical scale generating means having a sound selecting means corresponding to the sounds composing the musical scale, a speaker, a rotary means rotatably and removably mounted in the toy body, a mechanism for turning the rotary means, and a means for operating the sound selecting means provided on the surface of the rotary means. The electronic musical scale generating means is adapted to produce electrical signals of the sounds corresponding to the sound selecting means upon operating the sound selecting means. The rotary means is disposed adjacently to the sound selecting means so that the means for operating the sound selecting means may operate the sound selecting means to play a predetermined music as the rotary is rotated.

Abstract: A music box includes a casing molded from synthetic resin material, to which a diaphragm is secured with a metallic resonator plate interposed therebetween. Sound produced by the diaphragm causes a resonance of the plate and additionally of the casing, giving off an amplified, clear sound externally.

Abstract: Music box of the rotatable drum type with removable reed actuating pins which may be selectively disposed for playing various compositions, characterized by a drum having a peripheral surface without apertures therein and an envelope or sleeve surrounding same containing the apertures for retaining the pins, the envelope being injection moulded of plastic material, the apertures being non-circular, such as square, and the pins being cylindrical and of uniform diameter at all sections thereof.

Abstract: A musical movement which comprises, primarily, a metal comb produced by a chemical machining process and, secondarily, a drum in the shape of a frustum of a stepped comb. The comb is advantageously provided with means whereby it can be fastened to a movement base without employing bolts or the like and the drum steps advantageously have projections, for co-operation with the comb teeth, that do not extend further radially than do the immediately neighboring drum steps of larger size.