公开(公告)号：US3991695A

公开(公告)日：1976-11-16

申请号：US647589

申请日：1976-01-08

申请人： Frank W. McDonald

发明人： Frank W. McDonald

IPC分类号： B63C1/02 ,  B63C1/06

CPC分类号： B63C1/02 ,  B63C1/06

摘要： The invention described and disclosed herein is a dry dock for boats which consists of a frame, formed supports for the boat hull, guides used in docking and lateral support for the docked boat, air bladders to provide flotation, air control valves with an air-line system, and guides to restrain the dry dock to a stall in a marina. The dry dock provides a dry stowage of the boat, which is free from ice damage during the winter season and a means of effecting hull and propeller maintenance without beaching the vehicle or using heavy-duty facilities.

公开(公告)号：US4103548A

公开(公告)日：1978-08-01

申请号：US774918

申请日：1977-03-07

申请人： Frank W. McDonald

发明人： Frank W. McDonald

IPC分类号： G01N3/56 ,  G01M17/00

CPC分类号： G01N3/56

摘要： The disclosure described herein is a Wheel-wear Monitor that identifies wheels on railroad cars which have so worn that wheel flanges, with additional wear, will contact the rail frogs. The device consists of a set of contacts which are actuated by the flange of a worn wheel, an air-pellet gun triggered by said flange, pellets containing paint, a pellet gun control unit, automated reloading accessories, and a load cell sensor.

摘要翻译： 本文描述的公开是轮胎磨损监测器，其识别铁路车辆上具有磨损的轮子，轮胎凸缘具有额外的磨损将与铁青蛙接触。 该装置包括由磨损的轮的凸缘致动的一组触点，由所述凸缘触发的空气颗粒枪，包含油漆的颗粒，颗粒枪控制单元，自动重新加载附件和称重传感器。

公开(公告)号：US4961093A

公开(公告)日：1990-10-02

申请号：US462038

申请日：1990-01-08

申请人： Frank W. McDonald

发明人： Frank W. McDonald

IPC分类号： G03B27/46

CPC分类号： G03B27/462

摘要： An apparatus for forming enlarged exposures of film negatives is provided. The apparatus is adapted to be coupled to the housing of a conventional photo-processing machine without requiring permanent modification of the conventional machine. The apparatus includes a pair of magazines, one magazine of which houses a roll of unexposed paper. The unexposed paper is fed from the one magazine, vertically through the apparatus and into the other magazine. A mirror placed in the conventional machine, reflects a focussed light beam that has passed through a negative. The light beam is directed into the apparatus so that it impinges on a portion of the unexposed paper passing therethrough thereby forming an exposure of the negative on the paper. Drive motors automatically advance the paper from the one magazine to the other, upon exposure of the negative on the paper. A cutter is provided for cutting the paper when a complete reel of negatives has been exposed.

摘要翻译： 提供了一种用于形成膜底片放大曝光的装置。 该装置适于连接到常规照相加工机的壳体，而不需要常规机器的永久性改型。 该装置包括一对杂志，其中一个杂志箱容纳一卷未曝光的纸。 未曝光的纸张从一个杂志进料，垂直穿过设备进入另一个杂志。 放置在常规机器中的镜子反射已经通过负片的聚焦光束。 光束被引导到设备中，使得其照射通过其中的未曝光纸的一部分，从而在纸上形成负片的曝光。 当纸张上的负片曝光时，驱动电机会自动将纸张从一个杂志提升到另一个。 当已经暴露出完整的负片卷轴时，提供了用于切割纸张的切割器。