Chord organs

申请号 US3698276D 申请日 1970-12-03 公开(公告)号 US3698276A 公开(公告)日 1972-10-17
申请人 GRABER ROGG INC; 发明人 MARTIN HAROLD B; ROGG HERMAN O;
摘要 In an improved chord organ of the type which includes base and keyboard sections having corresponding reed assemblies provided with openings that are normally closed by extending pallets of keys operative by a user, a spring device is provided for normally urging the key pallet against its reed assembly opening. The spring device includes a plastic unitary body having a plurality of compression fingers extending therefrom for contact with the pallets, there being relative sliding movement between the fingers and their respective pallets during movement of the pallets between open and close positions with their reed assembly openings. The organ also features an improved gasket for each reed assembly, said gasket including a plastic unitary body which is located over the top of the reed assembly and possessing an inherent tacky surface for adhering thereto. The organ also features a tonal device which includes a single molded plastic body having a plurality of uniquely arranged pivotally mounted baffle plates located adjacent the sound slots of the organ, said plates being movable with respect to the slots to cause the tonal sounds emanating therefrom to range between a brassy and muted quality.
权利要求
1. In a chord organ having a chamber; a reed assembly box located within the chamber, said box being provided with a plurality of openings each of which communicate with a respective reed; a keyboard section having a plurality of keys pivotally movable about a shaft, each key being provided with a pallet extending therefrom for normally closing a reed opening; means for creating a flow of pressurized air within the chamber to permit a note to be sounded responsive to a lifting of the pallet from its respective reed opening; the combination with a unitary plastic spring device which comprises: a body, and a plurality of compression fingers integrally connected to and extending from the body, each of said fingers being in contact with a respective pallet to urge the pallet downwardly with sufficient force to normally close its respective reed box opening, said fingers being disposed with the pallets such that relative sliding movement occurs therebetween in response to a raising and lowering of the pallets from and to their respective reed openings.
2. In a chord organ, according to claim 1, wherein each pallet is provided with a rib portion and each finger is provided with an angular end surface for sliding contact with said pallet rib.
3. In a chord organ, according to claim 1, wherein the size and strength of each finger is dependent upon the length of the key end nearest an operator to its fulcrum point located over said shaft in order that the touch response of each key is of a substantially constant value, the keys which extend a longer length from its fulcrum being provided with fingers having a relatively greater width and density than the fingers for keys which extend a shorter length from its fulcrum.
4. In a chord organ having a chamber; a reed assembly box located within the chamber, said box being provided with a plurality of openings each of which communicate with a respective reed; a keyboard section having a plurality of keys pivotally movable about a shaft, each key being provided with a pallet extending therefrom for normally closing a reed opening; means for creating a flow of pressurized air within the chamber to permit a note to be sounded responsive to a lifting of the pallet from its respective reed opening; the combination with a spring device which comprises: a body, and a plurality of compression fingers extending from the body, each of said fingers being in contact with a respective pallet provided with a rib portion to urge the pallet downwardly with sufficient force to normally close its respective reed box opening, each finger being disposed with its respective pallet rib for permitting relatively sliding contact therebetween and being provided with an angular end surface which includes a pair of opposing walls, each finger wall overlapping a respective upper lateral surface of the rib to prevent any lateral movement of the pallet during the raising and lowering of said pallet from and to their respective openings.
5. In a chord organ having a chamber; a reed assembly box located within the chamber, said box being provided with a plurality of openings each of which communicate with a respective reed; a keyboard section having a plurality of keys pivotally movable about a shaft, each key being provided with a pallet extending therefrom for normally closing a reed opening; means for creating a flow of pressurized air within the chamber to permit a note to be sounded responsive to a lifting of the pallet from its respective reed opening; the combination with a spring device which comprises: a body; and a plurality of compression fingers extending from the body, each of said fingers being in contact with a respective pallet to urge the pallet downwardly with sufficient force to normally close its respective reed box opening, said fingers being disposed with the pallets such that relative sliding movemenT occurs therebetween in response to a raising and lowering of the pallets from and to their respective reed openings; said body being provided with a pair of opposing end posts for mounting the spring device to a section of the chord organ and wherein at least one supporting member extends from the body in a direction opposing to the extending fingers for securely holding the key shaft in a fixed position.
6. In a chord organ having a chamber; a reed assembly box located within the chamber, said box being provided with a plurality of openings each of which communicate with a respective reed; a keyboard section having a plurality of keys pivotally movable about a shaft, each key being provided with a pallet extending therefrom for normally closing a reed opening, each pallet having a rib portion; means for creating a flow of pressurized air within the chamber to permit a note to be sounded responsive to a lifting of the pallet from its respective reed opening; the combination with a single molded unitary spring device made of a plastic material which comprises: a body, a pair of opposing end posts integrally connected to the body for mounting the spring device to a section of the chord organ, a plurality of compression fingers extending from the body, each finger free end being made of a material having a highly lubricative property and a low coefficient of friction and provided with an angular configuration for contact with the top and upper lateral surfaces of its respective pallet rib, said fingers being disposed such that relative sliding movement occurs therebetween in response to a raising and lowering of the pallets from and to their respective reed openings, and at least one supporting member extending from the body in a direction opposite to the extending fingers for securely holding the shaft in a fixed position.
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