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Improvements in or relating to light projectors

机译:投影仪或与之有关的改进

摘要

520,131. Projector lamps; supporting lamps. BRIGHT, H. Oct. 7, 1938, No. 29182. [Classes 75 (iii) and 75 (iv)] A light projector suitable for illuminating picbures and other objects in an art gallery is mounted so as to be adjustable about a horizontal axis on a single-armed stirrup 5 which is adjustable about a vertical pivot 6 on a base 1 provided with holes by which it may be secured by screws to a standard conduit box in place of the usual cover. The light projector may comprise a cylindrical body 21 secured by screws 31 to a grooved front cover plate 10 formed with three facings 28 to any of which a bracket 29 carrying a lampholder 4 may be secured by a screw 30. The frame 26 of a reflector 25 secured to the body 21 by spacing screws 54 so as to allow ventilation reflects light from the lamp filament 60 towards a condensing lens system 32 arranged behind a focussing lens system 35 which is carried by a plate 36 secured to the plate 10 by springs 58 arranged beween nuts 37 and bolts 59. A shutter which may consist of adjustable metal strips or sheets may be inserted between plates 36, 10 so as for example to cut off light from a picture frame while illuminating the picture. A mask formed in accordance with the image obtained by the insertion of a photographic film between the plates 10, 36 may be substituted for the shutter. The body 21 is formed with a projection 9 secured by a screw 12 to the stirrup 5 and carrying a worm-wheel 13 engaged by an adjusting worm 14 on the stirrup. The stirrup 5 similarly carries a wormwheel 7 engaged by an adjusting worm 8 mounted in upstanding lugs on the base 1. The worms are internally threaded to receive operative screws 15, 18 at both ends. The inner ends of the screw engage to lock the screws together. The supply leads for the lamp issue from the conduit box through a bushing 3 in the base 1. Registered Design 830,906 is referred to in the Provisional Specification.
机译:520,131。投影灯;配套灯。布莱特,H.,1938年10月7日,第29182号。[类别75(iii)和75(iv)]安装了适合照亮美术馆中的小玩意儿和其他物体的投光器,使其可以在水平方向上调节单臂箍筋5上的轴线可绕着基座1上的垂直枢轴6调节,该基座上设有孔,通过该孔可以用螺钉将其固定在标准导管盒上,以代替通常的盖子。该投光器可以包括通过螺钉31固定到形成有三个面28的带凹槽的前盖板10上的圆柱体21,可以通过螺钉30将承载灯座4的支架29固定到其中的任何一个上。反射器的框架26通过间隔螺钉54固定在主体21上的图25中的灯25,以允许通风,将来自灯丝60的光反射向布置在聚焦透镜系统35后面的聚光透镜系统32,该聚光透镜系统32由通过弹簧58固定到板10的板36承载可以在板36、10之间插入一个由可调金属条或板组成的快门,以便例如在照亮图像的同时切断来自相框的光。根据通过在板10、36之间插入摄影胶片而获得的图像形成的掩模可以代替快门。主体21形成有突出部9,该突出部通过螺钉12固定到马the5上,并带有由调节蜗杆14啮合在马rup上的蜗轮13。箍筋5类似地带有由安装在基座1上的直立凸耳中的调节蜗杆8啮合的蜗轮7。蜗杆具有内螺纹以在两端接收操作螺钉15、18。螺钉的内端接合以将螺钉锁定在一起。从导管盒通过底座1中的衬套3发出灯泡的电源线。临时规范中引用了注册设计830,906。

著录项

  • 公开/公告号GB520131A

    专利类型

  • 公开/公告日1940-04-16

    原文格式PDF

  • 申请/专利权人 HAROLD BRIGHT;

    申请/专利号GB19380029182

  • 发明设计人

    申请日1938-10-07

  • 分类号F21S8/00;F21V17/00;

  • 国家 GB

  • 入库时间 2022-08-24 04:39:34

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