Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
283 words
A tape machine for the playback of different types of magnetic tapes in cassettes and the operation of which requires a switching of the tape machine corresponding to their nature, which switching is effected by means of an opening which is, or is not, present in a given wall of the cassette, comprising an operating-mode switch, a setting member for actuating said operating-mode switch, spring means for moving said setting member in one direction of displacement, an actuating device for actuating said setting member in opposition to said spring means, and actuated in eacH case with the movement involved in a placing of a tape cassette on said machine, locking means for holding said setting member fast when it is displaced in opposition to said spring means, a spring-loaded feeler member for sensing an opening in a cassette wall which determines the mode of operation and which is so coupled with said locking means that it eliminates the action of the latter upon penetration into said opening in said cassette wall, and an operating member which can be brought manually into two positions associated with the modes of operation and which is coupled with said locking means and said setting member in such a manner that in one position it eliminates the action of said locking means, and upon being brought into the other position displaces said setting member in opposition to the spring means acting on it, said operating member being interlocked in an end position of displacement by said locking means when there is no opening in said cassette wall, and said operating member being returned by said setting member when the interlocking thereof is eliminated by removal of the cassette.
Claim 2
Dependent Claim
283 words
A tape machine for the playback of different types of magnetic tapes in cassettes and the operation of which requires a switching of the tape machine corresponding to their nature, which switching is effected by means of an opening which is, or is not, present in a given wall of the cassette, comprising an operating-mode switch, a setting member for actuating said operating-mode switch, spring means for moving said setting member in one direction of displacement, an actuating device for actuating said setting member in opposition to said spring means, and actuated in eacH case with the movement involved in a placing of a tape cassette on said machine, locking means for holding said setting member fast when it is displaced in opposition to said spring means, a spring-loaded feeler member for sensing an opening in a cassette wall which determines the mode of operation and which is so coupled with said locking means that it eliminates the action of the latter upon penetration into said opening in said cassette wall, and an operating member which can be brought manually into two positions associated with the modes of operation and which is coupled with said locking means and said setting member in such a manner that in one position it eliminates the action of said locking means, and upon being brought into the other position displaces said setting member in opposition to the spring means acting on it, said operating member being interlocked in an end position of displacement by said locking means when there is no opening in said cassette wall, and said operating member being returned by said setting member when the interlocking thereof is eliminated by removal of the cassette.
Claim 3
Dependent Claim
239 words
The tape machine defined in claim 1, further comprising a double-armed lever having a first arm constituting said feeler member a pin serving as an interlocking member and lying on a second arm of said double-armed lever and disposed substantially perpendicular to a plane of movement of said double-armed lever and a direction of movement of said setting member, another spring means for pressing said double-armed lever with said feeler member in a direction towards said cassette wall, said double-armed lever with said feeler member being capable of being brought by said operating member into a position withdrawn from said cassette wall, a projection arranged on said setting member having an abutment edge which is limited on both sides and which is arranged lying transverse to the direction of movement of said setting member in such manner that when said settimg member is displaced against the action of the spring, said pin is located in front of said abutment edge in a position which locks said setting member when said feeler member is in a first position resting against said cassette wall, said pin leaving said abutment edge towards a first side when said feeler member is in a second position in which it extends into an opening in said cassette wall, and said pin leaving said abutment edge towards said second side when said feeler member is in a third position which is withdrawn from said cassette wall.
Claim 4
Dependent Claim
85 words
The tape machine defined in claim 2, wherein said pin is supported resiliently in a direction perpendicular to the plane of its swing motion, and an oblique slide surface is located near said first side of said abutment edge and so arranged that said pin, upon return of said feeler member from said first position into said third position, can be brought, by means of its support with resilience perpendicular to its swinging motion, past said projection to said second side of said abutment edge.