Reel mounting for recording or reproducing apparatus

In an apparatus for handling an elongate recording medium unwound from a supply reel and wound upon a take-up reel, including a mounting for said supply and take-up reels, the improvement wherein said mounting comprises:

• a support;
• a shaft cantilevered on said support;
• a first mandrel and a second mandrel coaxially juxtaposed on said shaft for independent rotation, said first mandrel being disposed adjacent a free end of said shaft and being provided with a slot extending axially from said free end, said second mandrel being inserted between said first mandrel and said support and being separated from said first mandrel by an axial gap, said mandrels being of substantially the same diameter;
• and
• a bell-crank lever with a first arm and a second arm swingable through about 90.degree. between an extended position and a withdrawn position, said second arm being pivoted to said shaft within said first mandrel, said first arm lying substantially parallel to the axis of said mandrels within said slot in said withdrawn position to facilitate emplacement of one of said reels on said second mandrel, said first arm extending radially from said slot in said extended position to form a stop in the vicinity of said gap for the other of said reels on said first mandrel.

In an apparatus for handling an elongate recording medium unwound from a supply reel and wound upon a take-up reel, including a mounting for said supply and take-up reels, the improvement wherein said mounting comprises:

• a support;
• a shaft cantilevered on said support;
• a first mandrel and a second mandrel coaxially juxtaposed on said shaft for independent rotation, said first mandrel being disposed adjacent a free end of said shaft, said second mandrel being inserted between said first mandrel and said support and being separated from said first mandrel by an axial gap, said mandrel being of substantially the same diameter;
• retractable detent means carried by said shaft in the vicinity of said gap for selective displacement between a radially extended and a radially withdrawn position to enable emplacement of one of said reels on said second mandrel in said withdrawn position and to form a stop for the other of said reels on said first mandrel in said extended position, said detent means including an arm lying substantially parallel to the axis of said mandrels;
• and
• an actuating member connected with said arm and carried on said shaft for rotation relative to said first mandrel about said axis, said first mandrel being provided with cam means engaging said arm for radially displacing same upon such relative rotation.

In the apparatus for handling an elongate recording medium unwound from a supply reel and wound upon a take-up reel, including a mounting for said supply and take-up reels, the improvement wherein said mounting comprises:

• a support;
• a shaft cantilevered on said support;
• a first mandrel and a second mandrel coaxially juxtaposed on said shaft for independent rotation, said first mandrel being disposed adjacent a free end of said shaft, said second mandrel being inserted between said first mandrel and said support and being separated from said first mandrel by an axial gap, said mandrels being of substantially the same diameter;
• and
• retractable detent means carried by said shaft in the vicinity of said gap for selective displacement between a radially extended and a radially withdrawn position, said detent means enabling emplacement of one of said reels on said second mandrel in said withdrawn position and forming a stop for the other of said reels on said first mandrel in said extended position, said detent means including at least one swingable arm lying substantially parallel to the axis of said mandrels alongside said shaft in said withdrawn position, said first mandrel being provided with an internal clearance and with a fulcrum for said arm within said clearance, said arm projecting generally axially from said clearance on opposite ends of said first mandrel and terminating in a substantially radial extremity within said gap.