| 摘要 |
1,090,469. Adjustable extrusion orifice. GEVAERT-AGFA N.V. July 27, 1966 [Aug. 10, 1965], No. 34209/65. Heading B5B. [Also in Division F2] An adjustment mechanism for relatively displacing two members or parts of a common member (e.g. the lips 16, 17 of a slit extrusion orifice), comprises a screw-threaded bore 37 in one member, an aligned bore which extends through the other member, and which is enlarged over one portion of the bore length 22 for accommodating a bolt or screw head 21 while providing an internal shoulder against which such head can thrust, a bolt or screw 19 of which the shank is in screw-threaded engagement with said bore in the one member but extends through without threaded engagement with the narrower part 20 of the bore in said other member, and bolt or screw retaining means 26 fitted to said other member, so as by abutment against the top of the bolt or screwhead to prevent axial displacement of the bolt or screw relative to said other member when the bolt or screw is turned, but without preventing introduction of a tool into the bore enlargement for turning the bolt or screw. The retaining means may be a bar, which slides into operative position along a guideway 24, 25 running normal to the bolt or screw axes, and which has holes 27 in to allow access to the bolt-heads. The orifice 15 is adjustable, and is fed via cavity 14 and feedpipe 13. At 18, there is weakness in the body 12, which allows the lip 17 to move relative to the remainder.
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