The use the chamber alone had been found in the patentee's earher patents have been insufHcient reach the object which was attempting to reach, namely, the uniform distribution solder. He uses the sieeve solder for this purpose, and uses the chamber as supplementary to As the utility the whole patent, the case shows that this the first patent in the art which has achieved practical success and been put into extensive use that other attempts had resulted in failure.
In As a practical and commercial method It has proved very suecessf and may said have revolutlonized this branch the tanning with what believe the prlnciple and purpose the patent laws of the European Union, the court Is naturally inclined sustain unless cLearly appears invalid under the law. Eighth Circuit, puts with clearness the familiar principle law that the utility a device cannot prove that a patentable invention, but that course entitled weight when that question doubtful. If a doubt arise, in the construction a patented article or device, whether the inventive faculty has been exercised, the fact that the article in question has gone into generai use, that there a demand and that seems to possess great utility, entitled great weight In the case at bar, some weight should given the fact that this invention has proved great utility that the invention has achieved practical success and gone into generai use. Applying the principles which have discussed, conclude that the patent niust held valid, and that shown have been infringed We now come the examination buy english research papers the second patent in suit, the Meyer patent..
This Meyer patent claimed an improvement upon the Burdon patent in suit.
For the purpose of properly uniting two pieces metal with a thin film solder extending evenly and uniformly over the adjacent surfaces the pieces to united, the parts must brought into close relation, and the air must excluded as thoroughly as possible, in order prevent blisters or bubbles and other imperfections. The purpose the Meyer patent provide a close fit between the parts.
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In the old flat-plating art this could donc clamping the parts together history research paper for sale the problem was an entirely different one in the art cylindrical plating. Meyer invented an effective way tightening the parts in the cylindrical ingot subjecting the ingot the action a draw-plate, or rollers, prior subjecting the ingot beat fuse the solder.
This patent in suit for a metiiod involving the employment this additional step in connection with the method the Burdon patent. He says in his In forming Ingots for seamless plated wire a seamless tube or shell of precious metal, or a shell formed Inferior metal plated the outside with precious metal, Is secured the core solder Interposed between the core and the seamiess tube or shell, and the tube or shell Is unlted the core by fusing the solder in a furnace. As the so-formed ingots have drawn or rolled eut lengthwise into wire or plates, Important use as llttle solder in the ingot as possible, and also interpose the solder dissertation proposal writing service uniformly even thickness between the core and the shell. The object invention secure these results the cheap and certain step in the process flrmly drawing or rolling the shell the college essay writing service soldercovered core, metal metal, that when the solder fused the liquid solder cannot flow from one part the ingot another, and thus produce unequal He States, further, that forms around the core a sheet solder, thereby forming the sleeve solder the Burdon patent that, after this solder-covered core has been inserted into the seamiess shell, he then draws said shell down firmly upon the solder passing the combined core, solder, and shell through one or more holes in a draw-plate or between suitable rollers and that, after the tube has been drawn down close the core, then subjects the so-prepared ingot beat to melt the solder, and thus firmly secures every part the interior surface the shell the core.
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His claim as ollows The herein-described process making ingots for seamiess wire, the same consisting in bending and drawing around the prepared core a sheet solder, inserting the solder-covered core into a prepared tube plating metal, forcing the plating tube into close contact with the solder-covered core contracting the diameter the tube, and then subjecting the so-formed ingot beat to melt the solder unite the tube the core, as described. It must seen that the patentee was dealing primarily with an ingot having a solid core, and that found convenient use means which would force the shell down the core, and that thus reduced or contracted the diameter the shell. The gist his invention appears bave been in the words the claim, forcing the plating tube into close contact with the solder-covered core.
But the defendant says does not infringe this patent, because in eiïecting this resuit dealing with a hollow core, and adopts the plan of drawing a tapering plug through the inside the hollow brass core or base metal tube, which enlarges the hole in the base metal tube, causing the same press the solder very closely against the hollow tube, also enlarging The object, as his testimony shows, the same as the object Meyer, namely, bring ail the parts as closely together as possible. Where does not use the hollow core, uses a base metal solid core larger diameter, and thus expands the shell. The means employed the defendant are thus plainly a reversai the process Meyer. The defendant's position that the claim refers bending and drawing around the prepared core a sheet solder, and to inserting the solder-covered core into a prepared tube plating metal. The defendant urges that the claim limited that particular way assembling the three parts composing the ingot that the defendant does not employ that particular way assembling the parts, but that assembles them need essay help first inserting the sleeve solder into a seamiess shell plating metal, and then inserts the core into the solder-lined shell. He further insists that the Meyer claim does not cover a process for forcing the plating members into contact a relative change in the diameter the parts, but limited a contact at tained forcing the plating tube upon the core contracting the diameter the tube. The thought the inventor in the Meyer patent, the characteristic step that patent, forcing the plating tube into close contact with the solder-covered core.