摘要:
A clip setting machine is capable of automatically separating individual spring-type rail clips from a stack of clips and of setting the individual clips in anchor sockets for subsequent application, e.g., by an automatic rail applicator. The clip setting machine may include two separate workheads each of which is positioned over a respective rail and which may support gauge and field side clip setter assemblies operable to set clips on the respective sides of a rail. Each clip setter assembly is movable from a position in which it receives clips one at a time from a magazine, through a position in which it is aligned with the shoulder of the anchor, and into a clip setting position. Each workhead can be lowered onto the rail into longitudinal alignment with the sockets and moved from tie to tie along the rail without being lifted, thereby facilitating the clip setting process. The clip setting process is preferably fully automated so that only two operators are required to operate the clip setting machine, one to load the magazines and one to position the machine and to initiate the clip setting cycle.
摘要:
The presence of dangerous substances such as cocaine is detected by atmospheric samples that include the residues (such as ether) of the manufacture of the suspected substances into a gas chromatograph to remove substances other than the residues and thereafter drawing them into a proportional counter chamber having a high voltage and a signal wire. A laser passes light capable of exciting the suspected residues through the proportional counter to produce ionization and generate a photoelectron. The signal wire passes this to an analyzer which indicates the presence of the suspected residues.
摘要:
The screen is provided by surrounding the coil producing the magnetic field with a set of electrical conductors the currents within the conductors being controlled in such a manner that the field is neutrailized in a specific region of space, the current distribution within the conductors being determined by calculating the current within a hypothetical superconductive shield which would have the effect of neutrailizing the field, the current through the conductors thereby being a substitute for the superconductive shield.
摘要:
A closed loop carbon dioxide laser system includes a catalytic converter in the form of a conduit with an annular recess which is filled with a catalyst of platinum-plated alumina pellets that are externally heated.
摘要:
A non-intrusive method and apparatus for performing qualitative analysis of a liquid disposed within a container transparent to laser radiation comprises a first laser focused at a selected point within the liquid to produce or generate bubbles emanating from that location and a laser Doppler velocimeter which is intercepted by the rising bubbles to produce an output signal indicating both bubble size and velocity, as indication of liquid quality.
摘要:
A power assisted steering gear assembly having a first fluid system 5 comprising a first pressure operated device such as a double acting piston and cylinder, a first valve for controlling fluid flow to the first pressure operated means in response to a steering input in shaft 2 and a first fluid pump 7. The first pressure operated means can be a conventional power assisted steering gear 1 imparting rotation to a drop arm 8. A second fluid system 20 comprises second valve means controlling fluid flow from a second pump 26 to a second piston and cylinder device incorporated in a ram unit 12. The second valve in the ram unit 12 is responsive to displacement of the drop arm 8 and reacts to determine power assistance provided by the system 20 to a steering maneuver, such power assistance being additional to that provided by the system 5. Displacement of the ram unit 12 controls movement of a steering linkage through drag link 38. In a modification the system 20 can include an auxilliary valve which is responsive to fluid pressure in the system 5 so that when that pressure attains a predetermined value the auxilliary valve reacts to render ineffective power assistance from the ram unit 12. In the event of fluid pressure failure in the system 5 the auxilliary valve reacts to restore pressure fluid to the ram unit 12 and provide power assistance in the system 20.
摘要:
An automatic machine including a two-dimensional positioning table, a device for measuring the dispositions attained by the table in each of said dimensions and a tool holder having an operative center in respect to said two dimensions. Furthermore means are provided for imaging a graticule means to an operative plane of the table so that the center of said image is substantially aligned with the operative center of the tool holder. A visual input device is positioned to view a part of said operative plane including said graticule image and comprises pattern recognition apparatus for:(a) identifying a predetermined mark on a flat surface of an object carried by said table, said flat surface lying in said operative plane,(b) identifying said graticule image, and(c) measuring the separation of said mark from said graticule image center.
摘要:
The anode of an electroplating apparatus is incorporated in a sparging plenum. The plenum has an insulating partition separating the anodically biased electrode from the workpieces being plated. The partition has a regular array of orifices. Electrolyte is pumped into the plenum and flows out of the partition, providing a spacially uniform supply of fresh solution to the workpieces. In a soluble anode process, the solution is replenished in the plenum. In an exemplary apparatus, one major surface of the plenum is a titanium tray, which holds pieces of nickel, which dissolve during the nickel plating process.