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The photographic news
- Bandzählung
- 29.1885
- Erscheinungsdatum
- 1885
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- Englisch
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- Hochschule für Grafik und Buchkunst Leipzig
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- Hochschule für Grafik und Buchkunst Leipzig
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- Bandzählung
- No. 1383, March 6, 1885
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- Paginierfehler: S. 160 als S. 144 gezählt.
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Zeitschrift
The photographic news
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Band 29.1885
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- Register Index III
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Band 29.1885
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154 THE PHOTOGRAPHIC NEWS. LMARCH 6, 1885. by driving off all its volatile ingredients, and finally I fire it in the usual way so as to fuse the colour and fix it as enamel. The process may be repeated several times on the same surface, so as to produce on it a design having different colours or tones, in different parts of it, suitable transparencies or negatives being employed and applied in correct register. Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be per formed, I declare that what I claim is: The process for producing pictures or designs on enamelled iron substantially as described. Patents Granted in America. 312,337. Charles DonEy, Lock Haven, Pa. “ Photograph burnisher.”—-Filed July 29, 1884. (No model). Claim.—1. In a photograph burnisher, the combination, with a horizontal arm, of a roller adjustably secured thereto, and a burnishing plate or table located below said roller, substantially as set forth. 2. In a photograph burnisher, ths combination, with a horizontal arm, and vertical supports adjustably secured thereto, of a roller journalled in said supports, and a burnisher-plate below said supports, substantially as set forth. 3. In a photograph burnisher, the combination, with a standard provided with a horizontal arm, and adjustable sup ports depending therefrom, of a roller journalled in said supports, a burnisher-plate or table located below said supports, and devices for vertically adjusting said plate or table, substantially as set forth. 4. In a photograph burnisher, the combination, with a frame open on one side, and consisting, essentially, of a base, a vertical standard, and a horizontal arm secured to said standard, of a bearing or bearings depending from the horizontal arm, a roller journalled in said bearings, and a plate or table located under the roller, substantially as set forth. 312,363. William H. Lewis, New York, N. Y., assignor to E. & H. T. Anthony and Co., same place. “ Camera-stand.” —-Filed Sept. 11, 1881. (No model). Claim.—1. In a camera-stand, the folding legs consisting of the portions connected by hinge-plates, which allow the parts to be turned outward in opposite directions, substantially as described. 2. In a camera-stand, plates combined with the leg portions so as to serve as hinges and as a lateral support to the joint, substantially as described. 3. In a. camera-stand, the spring arms, combined with the table and the leg portions, substantially as and for the purpose specified. 4. A leg for camera-stands, constructed so as to be folded, and adjustable in length by an endwise movement of the parts, two of the parts being adapted to be turned outward and folded against the opposite sides of the other part, substantially as described. 312,581. C. PRoscH, New York, N.Y., assignor to E. & H. T. Anthony and Co., same place. “ Shutter for photographic oameras.”--Filed Jan. 21, 1884. (No model). Claim. 1. In shutters for photographic cameras, the com- bination, with the pivoted shutter, of a spiral. spring for throwing the same, having one end secured to a stationary post, and its other end connected to the shutter in eccentric relation with the pivot thereof, whereby the spring, in the starting of the shutter, is moved gradually, and all jar is avoided, substan tially as herein shown and described. 2. The combination, with the shutter, B B', and its operating spring, E, of the adjustable post, (/, secured by a clamping nut or nuts, and having the coiled end of said spring attached to it, whereby provision is made for adjusting the tension of the spring, essentially as described. 3. The combination of an adjustable spring-pressure device, with the double-acting shutter and its carrier or plate, and spring for throwing the shutter, whereby more or less friction may be put upon the shutter to retard or quicken its action, essentially as described. 4. The double-acting shutter, thickened or provided with projections, o o, on the backs of its sections, in combination with a pressure device, under which said projections pass when the shutter is closed, and the shutter-carrier or plate, A, substan tially as and for the purpose herein set forth. 5. The combination, with the spring-trigger, and the shutter held an 1 release 1 by the trigger, of a trigger-guard arranged to secure the operation of the trigger by the sliding of a loop or trigger operating device between said guard and the t dl of the trigger, substantially as specified. 6. The link or slotted trigger-operating device and cord, in combination with the spring trigger, its guard, and the pivoted shutter, essentially as described. 7. The combination, with the shutter, B B' and its carrier or plate, A, of the spring lever or catch, I, constructed and arranged to act as a stop to the shutter when half or partially closed, essentially as and for the purpose herein set forth. THE SUN’S ENERGY. BY PROFESSOR 8. P. LANGLEY.* We have ascended already from our small starting-point to numbers which express the heat that falls upon the whole planet, and enable us to deal, if we wish, with questions relating to the glacial epochs and other changes in its history. We have done this by referring at each step to the little cube which we have carried along with us, and which is the foundation of all the rest; and we now see why such exactness in the first determina tion is needed, since any error is multiplied by enormous numbers. But now we, too, are going to step off the earth and deal with numbers which we can still express in the same way if we choose, but which grow so large thus stated that we will seek some greater term of comparison for them. We have just seen the almost incomprehensible amount of heat which the sun must send the earth in order to warm its oceans, and make green its continents ; but how little this is to what passes us by ! The earth, as it moves on its annual path, continually comes into new regions, where it finds the same amount of heat already pouring forth ; and this same amount still continues to fall into the empty space we have just quitted, where there is no one left to note it, and where it goes on in what seems to us utter waste. If, then, the whole annual orbit were set close with globes like ours, and strung with worlds like beads upon a ring, each would receive the same enormous amount the earth does now. But this is not all; for not only along the orbit, but above and below it, the sun sends its heat in seemingly incredi ble wastefulness, the final amount being expressible in the number of worlds like ours that it could warm like ours, which is 2,200,000,000. We have possibly given a surfeit of such numbers, but we cannot escape or altogether avoid them, when dealing with this stupendous outflow of the solar heat. They are too great, per haps, to convey a clear idea to the mind, but let us, before leav ing them, try to give an illustration of their significance. Let us suppose that we could sweep up from the earth all the ice and snow on its surface, and, gathering in the accumulations which lie on its Arctic and Antarctic poles, commence building with it a tower greater than that of Babel, fifteen miles in dia meter, and so high as to exhaust our store. Imagine that it could be preserved untouched by the sun’s rays, while we built on with the accumulations of successive winters, until it stretched out 240,000 miles into space, and formed an ice-bridge to the moon, and that then we concentrated on it the sun’s whole radiation, neither more nor less than that which goes on every moment. In one second the whole would be gone, melted, boiled, and dissipated in vapour. And this is the rate at which the solar heat is being (to human apprehension) wasted I Nature, we are told, always accomplishes her purpose with the least possible expenditure of energy. Is her purpose here, then, something quite independent of man’s comfort and happiness ? Of the whole solar heat, we have just seen that less than • Continued from page 30.
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