| 摘要 |
A cartridge for receiving a reel containing motion picture film or other strip material comprises two separate cartridge parts which are latched together in such a manner that they resist inadvertent opening when the parts are subject to a separating force. Interlocking surface formations at the interface between the cartridge parts limit lateral movement along the interface between the cartridge parts. The inner surface of one of the cartridge parts contains structure which serves to centralize the reel within the cartridge and which blocks improper insertion of the reel into the cartridge. Locating means on the cartridge and on a motion picture projector assures proper positioning of the cartridge on the projector. Nibs and mating recesses are provided at the interface between the cartridge parts to prevent undesirable distortion of the cartridge sides. A retractable spindle for a projector permits mounting of a cartridge in a direction perpendicular to the axis of the spindle.
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