“We find the different sizes to be used quite unequally. The method of making a separate tracing of each piece, which we carry to a great extent, causes the smaller sizes to multiply quite rapidly. We are also marking our patterns with the stencil of the drawings, as well as gauges, templets, and jigs. “It is found best to permit the sheets to be put away by one person only, who also writes up the indices, which are kept in the fire-proof vault. “We have ourselves been surprised at the saving of room which this system has effected. Probably less than one fourth the space is occupied that the same drawings would require if classified according to subjects. The system is completely elastic. Work of the most diverse character might be undertaken every day, and the drawings of each article would find places ready to receive them.” It will be observed that in planning the sizes of sheets I was limited to antiquarian paper. Now no limitation exists. I should to-day increase the number of sizes. The whole summer passed, many had taken trips to Europe and back, when about the middle of September Mr. Morgan notified the chairman that he had received the expert’s report and requested him to call a meeting of the subscribers to hear it. I went to the meeting with mingled hope and apprehension. Mr. Morgan read a long letter from the expert containing an elaborate argument against the patent which he concluded by saying that he could not recommend its acceptance. When Mr. Morgan had finished reading the letter he continued: “Mr. Chairman, I am tired of this man’s delays and quibbling, and I now advise you that Mr. Porter has performed his contract, and it only remains for you to perform yours.” This was the harvest from the seed I had sown six months before. The following is the Reissue on which the patent expert hung up our business for six months. The specification was written by me, the disclaimer and claims were written by Chief Examiner Fowler. UNITED STATES PATENT OFFICE JOHN F. ALLEN OF BROOKLYN, ASSIGNOR TO GEORGE T. HOPE, OF BAY RIDGE, N. Y., AND CHARLES T. PORTER, OF PHILADELPHIA, PA. _Balanced Valve._ SPECIFICATION forming part of Reissued Letters Patent No. 9303, dated July 20, 1880. Original No. 167865, dated September 21, 1875. Application for reissue filed June 2, 1880. _To all whom it may concern:_ Be it known that I, JOHN F. ALLEN, formerly of the city, county, and State of New York, but now of Brooklyn, New York, have invented certain new and useful Improvements in Balanced Slide Valves, of which improvements the following is a specification.