| 摘要 |
PROBLEM TO BE SOLVED: To prevent a sight glass mounted on a safety door from being soiled with dirt of a mold releasing agent and the like. SOLUTION: A shutter 6 is large enough to cover a sight glass 5 when the shutter is fully closed, and slidably fitted to a guide 6a projecting inward farther than a glass fixing frame 5a. A handle 7 attached to the shutter 6 projects outside a safety door 4 through a notch 4b formed in the safety door 4. Concerning the handle 7, a grasping part 7a a worker grasps is attached to an attaching part 7b, which attaches the handle 7 to the shutter 6, in such a way that the handle 7 is turnable by a pin 7c. A strip-like slide regulating member 8 is attached under the notch 46 at the position, where the grasping part 7a comes into contact with the safety door when tilted downward, approximately parallel with the notch 4b. COPYRIGHT: (C)2004,JPO&NCIPI
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