Music – Instruments – Drum and cymbal beaters
Patent
1986-09-29
1987-09-08
Franklin, Lawrence R.
Music
Instruments
Drum and cymbal beaters
G10D 1300
Patent
active
046916130
ABSTRACT:
A bass drum pedal includes a base frame with a pivotal footplate assembly for driving a rotatable shaft supported on the frame. A hammer is connected to the drive shaft, and is moved to impact on a drum head. A cable connects the footplate to a generally spiral shaped torque arm mounted to the drive shaft. The torque arm is adjustable to vary the amount of footplate movement per unit of hammer sweep. A spring and chain are connected between the frame and drive shaft to return the hammer to a resting position after being operated to impact on the drum. A pair of sprockets are eccentrically mounted with the chain wrapped around them such that the amount of footplate movement per unit of total spring tension can be increased or decreased throughout the hammer stroke. The footplate assembly includes a heel plate, arch plate and toe plate each adjustably attached to a pair of rails pivotally connected to the base frame at the heel end. The heel, arch and toe plates are specially contoured to support the foot and prevent "cupping" and rolling of the foot during high speed playing. An acoustic drum simulator assembly adjustably secured to the drive shaft is connected to one end of a coil spring wrapped around the drive shaft. The other end of the coil spring is attached to a collar which holds the hammer. The spring allows a limited amount of additional rotation of the drive shaft past the point at which the hammer contacts the drum head, to thereby simulate the feel of an acoustic drum when utilizing the pedal on an electronic drum.
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