Abstract: A bottle that can be used for preventing spillage when the bottle is tilted for positioning the bottle so that all of the liquid therein is received by an intended receptacle for the liquid. The liquid bottle is made of a flexible material that may be squeezed to decrease the interior volume of the bottle and has an elongated neck terminating in an opening that is wide enough to enable viscous liquid to pour freely therethrough from the bottle when the bottle is tilted. An airtight seal is permanently secured to the perimeter of the neck and closes the opening for preventing liquid from being poured from the opening when the bottle is tilted; and the seal is rupturable upon pressure being exerted thereon by the contents of the bottle when the bottle is squeezed.

Abstract: A bottle that can be used for preventing spillage when the bottle is tilted for positioning the bottle so that all of the liquid therein is received by an intended receptacle for the liquid. The bottle is made of a flexible material that may be squeezed to decrease the interior volume of the bottle, and has an elongated neck terminating in an opening that is wide enough to enable viscous liquid to pour freely therethrough from the bottle when the bottle is tilted. An airtight seal is secured to the perimeter of the neck and closes the opening for preventing liquid from being poured from the opening when the bottle is tilted; and the seal is rupturable upon pressure being exerted thereon by the contents of the bottle when the container is squeezed.

Abstract: An electromechanical piano of the type incorporating asymmetrical tuning forks. To increase vastly the dwell of the forks in the high-pitched range of the piano, a fork-mounting construction is employed wherein only a single screw is associated with each fork. Elastomeric means are provided around each screw and also between opposed edge surfaces of adjacent forks, whereby to prevent rotation of each fork about the axis of its associated mounting screw.

Abstract: An electric piano has a complete player actuated piano voice of which harmonics are basically controlled by a tuning fork that is struck by the piano key. The piano is also provided with an electronically generated voice of which harmonics are electronically generated. To better enable the two voices to be played simultaneously by striking a single piano key, the amplitude envelope of the electromechanically generated piano voice is imposed upon the electronically generated voice which is gated and amplitude modulated so as to be heard in precise synchronization with a piano note produced by the instrument player. Linearity of modulation is extended to low piano voice amplitudes by use of modulating and gating diodes in oppositely poled feedback paths of an operational amplifier.

Abstract: An action is described for musical instruments of the piano type. Means are included for braking and restraining each hammer of the action to prevent bouncing, rebounding, or other undesired movement, when the key is depressed and the hammer is positioned at the escapement distance from the tone generating tine and also when the key is released and the hammer is at rest position. The braking and restraining means move arcuately in cooperation with the key to exert a wedging force against a portion of the head of the hammer to brake and restrain it in the desired positions.