Tone arm automatic reset mechanism for an audio-visual device

Claim 2

In an audio-visual device of the type adapted to receive a record and a transparency holder, wherein such device includes a tone arm and reset means for returning the tone arm to a starting position, the improvement for automatically resetting the tone arm in response to movement of the transparency holder to its starting position comprising, a tripping mechanism cooperating with said reset means for releasing the tone arm upon actuation of the tripping mechanism, said tripping mechanism including a member movable back and forth between first and second positions, which member serves to actuate said tripping mechanism when in said first position thereof, means mounting said member for being engaged by an element on the transparency holder and for being moved thereby from said second position to said first position in response to movement of said transparency holder to its starting position.

Claim 3

In an audio-visual device, the improvement comprising: a. a transparency holder mounting a series of transparencies and including a formation in predetermined spatial relationship with such transparencies; b. a hoUsing having means for operably supporting a record and said transparency holder and mounting the latter for movement to and from a starting position; c. a tone arm and reset means for returning the tone arm to a starting position; d. a tripping mechanism cooperating with said reset means for releasing the tone arm to return the same to its starting position upon actuation of the tripping mechanism; and e. a member associated with said tripping mechanism and movable back and forth between first and second positions, which member serves to actuate said tripping mechanism when in said first position thereof, said member being engaged by said formation on the transparency holder for being moved thereby from said second position to said first position in response to movement of the transparency holder to its starting position.

Claim 4

In an audio-visual device, the improvement comprising: a. a transparency holder mounting a series of transparencies and including a formation in predetermined spatial relationship with such transparencies; b. a hoUsing having means for operably supporting a record and said transparency holder and mounting the latter for movement to and from a starting position; c. a tone arm and reset means for returning the tone arm to a starting position; d. a tripping mechanism cooperating with said reset means for releasing the tone arm to return the same to its starting position upon actuation of the tripping mechanism; and e. a member associated with said tripping mechanism and movable back and forth between first and second positions, which member serves to actuate said tripping mechanism when in said first position thereof, said member being engaged by said formation on the transparency holder for being moved thereby from said second position to said first position in response to movement of the transparency holder to its starting position.

Claim 5

In an audio-visual device, the improvement comprising: a. a transparency holder mounting a series of transparencies and including a formation in predetermined spatial relationship with such transparencies; b. a housing having an opening for removably receiving said transparency holder; c. advancing means in the housing for moving said holder to and from a starting position; d. a tone arm and reset means for returning the tone arm to a starting position; e. a tripping mechanism cooperating with said reset means for releasing the tone arm to return to its starting position upon actuation of the tripping mechanism; and f. a member associated with said tripping mechanism and movable back and forth between first and second positions, which member serves to actuate said tripping mechanism when in said first position thereof, said member being mounted adjacent the housing opening for being engaged by said formation and moved thereby from said second position to said first position in response to movement of the transparency holder to its starting position.

Claim 6

In an audio-visual device, the improvement comprising: a. a transparency holder mounting a series of transparencies and including a formation in predetermined spatial relationship with such transparencies; b. a housing having an opening for removably receiving said transparency holder; c. advancing means in the housing for moving said holder to and from a starting position; d. a tone arm and reset means for returning the tone arm to a starting position; e. a tripping mechanism cooperating with said reset means for releasing the tone arm to return to its starting position upon actuation of the tripping mechanism; and f. a member associated with said tripping mechanism and movable back and forth between first and second positions, which member serves to actuate said tripping mechanism when in said first position thereof, said member being mounted adjacent the housing opening for being engaged by said formation and moved thereby from said second position to said first position in response to movement of the transparency holder to its starting position.

Claim 7

The improvement according to claim 3 further defined by: a. indexing means for advancing said tone arm in response to operation of said advancing means; b. biasing means connected with said indexing means for returning said tone arm to its starting position; c. a rack movable with said indexing mechanism and a pawl engaged with the rack for holding the indexing mechanism in opposition to said biasing means; d. an arm mounted adjacent said pawl for disengaging the latter from said rack; and e. said member being connected with said arm for moving the latter to disengage said pawl from said rack when said member is moved to said first position thereof.

Claim 8

The improvement according to claim 3 further defined by biasing means urging said member from its first position to its second position.

Claim 9

The improvement according to claim 3 wherein said transparency holder is defined by a planar element mounting said transparencies in coplanar relationship therewith, said disk having a hub at its center rotatably mounting said record in parallel adjacent relationship with said planar element, said formation being defined by a lug mounted on said planar element.

Claim 10

The improvement according to claim 6 wherein said formation is defined by a lug mounted on said planar element and projecting from the face thereof adjacent said record and extending into the space between said planar element and said record.

Claim 11

The improvement according to claim 7 further defined by: a. indexing means for advancing said tone arm in response to operation of said advancing means; b. biasing means connected with said indexing means for returning said tone arm to its starting position; c. a rack movable with said indexing means and a pawl releasably engaged with the rack for holding the indexing means in opposition to said biasing means; d. an arm mounted adjacent said pawl for disengaging the latter from said rack; and e. said member being connected with said arm for moving the latter to disengage said pawl when said member is Moved to said first position thereof.