Abstract: A cross arm structure for use in a pushbutton tuner comprising a frequency setting plate pivotally supported on the cross arm and a pushing member disposed adjacent to the frequency setting plate for pressing or releasing the frequency setting plate in response to the sliding operation of the pushbutton, characterized in that the frequency setting plate is kept in a pivotal position by means of an early lock preventing plate cooperable with a top end portion of the pushing member.

Abstract: An indicator mechanism in a pushbutton tuner characterized in that there is provided a front plate horizontally extending from the top end of the tuner casing. The front plate is integrally formed with two-stepped protrusions, the lower one of which is inserted in a central bore of a slidable plate mounted on the front plate so that the slidable plate can pivot about the lower protrusion as an axis. The indicator mechanism further comprising a plate spring having an open rectangular configuration for seizing the front plate between its upper and lower plates. The plate spring is also formed with a through bore in its upper plate for receiving the upper protrusion of the front plate. The front plate is further formed with projections as high as the lower protrusion by which the upper plate of the plate spring is supported.

Abstract: A changeover mechanism for a multi-band pushbutton tuner in which a plurality of button slides with push buttons secured thereto, respectively, have each a pair of auxiliary slide members disposed on opposite sides thereof, lock members are mounted on pivotal seats of the button slides so as to rock thereon, respectively, and a changeover plate has operative portions which are engageable with cam portions formed on the respective upper edges of the lock members, to change over the position of the lock members relative to the button slides by displacement of the changeover plate, which mechanism is characterized in that the changeover plate is provided with an operative projection which is engageable with an operative member rotatably mounted on a support frame provided over an area where the push buttons are disposed, the operative member is engageable, at opposite ends thereof, with interlocking links, respectively, and the interlocking links are connected to push-actuators provided on opposite ends of the s

Abstract: A pushbutton tuner having a tuning mechanism connected through a releasable clutch to a manual dial selector and connectable to a pushbutton selector including a button slide and an actuating member, wherein specific means for ensuring the resetting of the button slide is provided to prevent possible locking of the button slide by clutch releasing means.

Abstract: A dual band pushbutton tuner comprises a frame, a plurality of actuating members each having a pushbutton, the actuating members being capable of sliding with respect to the frame, a pair of follow-up members arranged on both sides of each actuating member, a toggle lever articulately mounted to each actuating member at a position adjacent to the pushbutton, and shift means for pivotally moving all of the toggle levers at the same time to insert the toggle levers into notches in the follow-up members on either side to couple the actuating members to the follow-up members. Means are provided for positionally fixing and maintaining the toggle lever of any actuating member in its inserted state comprising holding means constructed so that the toggle lever of each actuating member slides on the associated and uncoupled follow-up member as the actuating member is operated.

Abstract: A push button type tuning device comprising a plurality of tuning coils each being made tunable with any of a plurality of receiving broadcast bands, selection levers any of which is selected and pushed in response to a desired broadcast band by operating each push button secured to a pointed end of each selection lever and tuning cores each being adapted to insert into or draw from any of said coils by the pushed selection lever.