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Show A (iKEAT INVENTION. REMARKABLE IDEA OF A PENNSYLVANIA PENN-SYLVANIA GENIUS. Edward McGarvey of Bellefonte Has Perfected a Machine That Will Weigh Ballriml Traliu While In Motion How It Wurks. Among the remarkable inventions patented this year is an electrical apparatus ap-paratus for weighing moving railroad trains by means of . harmonic vibration, vibra-tion, and such attention on the part of prominent electricians and mechanical mechan-ical scientists has the invention already al-ready attracted that it gives promise of ranking among the great things of the year. . The inventor is a Bellefonte (Pa.) young man, Mr. Edward McGarvey. and so confident are those who have closely investigated the claims of the invention, that a company of prominent Bellefonters has been organized for the further perfection per-fection and development, as well as to arrange for the manufacture, not only of the weighing apparatus, but also of prepared paper. As each reed represents repre-sents a certain weight, the weight of the load is thus automatically and correctly cor-rectly recorded. The arrangement of circuits in the apparatus Is such that the recording mechanism may be removed re-moved a distance from the scale and placed, for instance, in a railroad' general office, the regular telegraph line being used to conduct the Impulses. Im-pulses. The recorder will interfere In no way with the regular business on the line, nor will the operation of the regular instruments affect the accuracy of the records. Though the apparatus Is as yet in the experimental, stage, it has been thoroughly thor-oughly tested at Bellefonte, One vat placed on the scales of Je Central Railroad of Pennsylvania at Mill. Hall, with the recorder in the office of Assistant As-sistant Superintendent John J. Walsh in Bellefonte, a distance of. twenty-nine twenty-nine miles, and highly satisfactory results re-sults were obtained, the practicability and merits of the system being fully demonstrated. The tests were made with moving cars, and it was shown that less than one second of time elapsed after the circuit closed until the ribbon and reed responded to th proper rate. From this and other practical prac-tical tests it has been plainly demonstrated demon-strated that the feat of weighing a train moving even at regular transit speed over any properly constructed scales, and of simultaneously recording the weight of the successive cars, is within the capabilities of this system. The illustrations accompanying this article give a correct idea of the slz of the aparatus. the hands of a man being shown in one picture. ' : The invention has already attracted the attention of large railroad an manufacturing companies, who are anxious to give it a thorough test. Bellefonte, however, recognizes the merits of the apparatus, and because of this the aforementioned company has been organized. '' ' " Mr. McGarvey is only twenty-four years of age, but has demonstrated his ability as an inventive genius. " MR. EDWARD M'GARVEY. several other similar inventions which will embrace the fundamental principle, princi-ple, but applicable in various other equally important ways. The principle of the invention Is entirely original, it being the first of its kind ever presented to the patent authorities. A full technical description descrip-tion of the machine would occupy too much space, but a brief review is interesting. in-teresting. The apparatus is composed of two small machines, the ribbon case and the recorder. They can be attached at-tached to any pair of scales, railroad or wagon. ThiVjiTinciple is uarmonic vibration from dectrical attachments, and the work of the apparatus is en- tirely automatic. The working consists con-sists in the attaching of a metallic ribbon rib-bon to the scale lever or beam, the other end to a fixed object. When a weight is placed on the scale the tension ten-sion on the ribbon naturally increases as the weight becomes heavier. The electrical attachments cause the ribbon to vibrate, and the number or rate of vibration varies according to the strain on the ribbon from the scale beam. These vibrations are very rapid, hardly hard-ly perceptible to the naked eye, yet they open and close an electrical circuit; cir-cuit; and in the same manner another metallic ribbon is made to vibrate that is placed on the same circuit Harmonic Har-monic vibration Is next applied. It is a well-known principle that musical mu-sical reeds and strings will vibrate in ' unison when their particular tones are produced near them. In the recording machine there is a set of musical reeds. The different weights cause different dif-ferent reeds to vibrate. A heavy load on the scales causes a high tension, and a high rate of vibration of the metal ribbon, and the result Is a corresponding cor-responding rate of vibration in . the reeds. The reeds are like the teeth of a comb. Starting from the lowest point, as weight is generally applied to the scale, the reeds- commence to vibrate vi-brate from the lower to the highest tones as the load increases. A continuous sheet of paper passes under them and as each reed vibrates It, makes a record on the chemically |