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The photographic news
- Bandzählung
- 27.1883
- Erscheinungsdatum
- 1883
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- Englisch
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- F 135
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- Hochschule für Grafik und Buchkunst Leipzig
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- Hochschule für Grafik und Buchkunst Leipzig
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- SLUB Dresden
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- urn:nbn:de:bsz:14-db-id1780948042-188300004
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- http://digital.slub-dresden.de/id1780948042-18830000
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- LDP: Historische Bestände der Hochschule für Grafik und Buchkunst Leipzig
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Zeitschrift
The photographic news
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Band
Band 27.1883
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- Titelblatt Titelblatt I
- Register Index III
- Ausgabe No. 1270, January 5, 1883 1
- Ausgabe No. 1271, January 12, 1883 17
- Ausgabe No. 1272, January 19, 1883 33
- Ausgabe No. 1273, January 26, 1883 49
- Ausgabe No. 1274, February 2, 1883 65
- Ausgabe No. 1275, February 9, 1883 81
- Ausgabe No. 1276, February 16, 1883 97
- Ausgabe No. 1277, February 23, 1883 113
- Ausgabe No. 1278, March 2, 1883 129
- Ausgabe No. 1279, March 9, 1883 145
- Ausgabe No. 1280, March 16, 1883 161
- Ausgabe No. 1281, March 22, 1883 177
- Ausgabe No. 1282, March 30, 1883 193
- Ausgabe No. 1283, April 6, 1883 209
- Ausgabe No. 1284, April 13, 1883 225
- Ausgabe No. 1285, April 20, 1883 241
- Ausgabe No. 1286, April 27, 1883 257
- Ausgabe No. 1287, May 4, 1883 273
- Ausgabe No. 1288, May 11, 1883 289
- Ausgabe No. 1289, May 18, 1883 305
- Ausgabe No. 1290, May 25, 1883 321
- Ausgabe No. 1291, June 1, 1883 337
- Ausgabe No. 1292, June 8, 1883 353
- Ausgabe No. 1293, June 15, 1883 369
- Ausgabe No. 1294, June 22, 1883 385
- Ausgabe No. 1295, June 29, 1883 401
- Ausgabe No. 1296, July 6, 1883 417
- Ausgabe No. 1297, July 13, 1883 433
- Ausgabe No. 1298, July 20, 1883 449
- Ausgabe No. 1299, July 27, 1883 465
- Ausgabe No. 1300, August 3, 1883 481
- Ausgabe No. 1301, August 10, 1883 497
- Ausgabe No. 1302, August 17, 1883 513
- Ausgabe No. 1303, August 24, 1883 529
- Ausgabe No. 1304, August 31, 1883 545
- Ausgabe No. 1305, September 7, 1883 561
- Ausgabe No. 1306, September 14, 1883 577
- Ausgabe No. 1307, September 21, 1883 593
- Ausgabe No. 1308, September 28, 1883 609
- Ausgabe No. 1309, October 5, 1883 625
- Ausgabe No. 1310, October 12, 1883 641
- Ausgabe No. 1311, October 19, 1883 657
- Ausgabe No. 1312, October 26, 1883 673
- Ausgabe No. 1313, November 2, 1883 689
- Ausgabe No. 1314, November 9, 1883 705
- Ausgabe No. 1315, November 16, 1883 721
- Ausgabe No. 1316, November 23, 1883 737
- Ausgabe No. 1317, November 30, 1883 753
- Ausgabe No. 1318, December 7, 1883 769
- Ausgabe No. 1319, December 14, 1883 785
- Ausgabe No. 1320, December 21, 1883 801
- Ausgabe No. 1321, December 28, 1883 817
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Band
Band 27.1883
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May 18, 1883.] THE PHOTOGRAPHIC NEWS Cut-out mounts, oval, dome, and other shapes, are often cub out of thick cardboard, and the photograph is glued, or otherwise fastened, at the back, thereby giving a pleasing effect to large pictures. The photograph must be previously mounted on cardboard, rolled or burnished ; in fact, finished before it is thus attached to the cut-out mount. Mountank.—For various reasons it is probable that no better mountant is used for attaching photographs to substances such as cardboard than a good starch paste, made in the usual manner for laundry work, viz., mixing Glenfield’s, or any other good class of starch, with a little cold water until a very stiff paste is obtained; then add boiling water (stirring vigorously) until a clear paste results. Should the paste not be of a good consistency— viz., rather limpid—discard it, and make fresh, using a little less cold water to mix the starch ; and be sure the heated water to be added is at a temperature of 212° F. Two ounces of dextrine mixed with half-a-pint of cold water, and added to the above starch paste in equal pro portions, the mixture being heated on a water or steam bath to 212° F., is said to make a very strong and useful mountant for photographs ; it is an excellent adhesive, is not easily affected by moisture, and more useful for mount ing photographs in scrap books than starch alone. Next inorder of merit is thin glue, to which should be added a small proportion of an antiseptic, such as salicylic acid. Many large firms of photographers have not used any other mountant for years. Gelatine is much used for the purpose in America, but it is open to an objection that glue is not freed from, viz., the proportion of gelatine or glue to water must be suffici ent to obtain a strong jelly when cold, therefore it must be liquefied on a water bath each time it is required for use, and the oftener it is heated, the more will it lose its adhesiveness. But this is not the chief obstacle. Gelatine is more or less affected by the atmosphere, and from its nature absorbs a great deal of moisture ; it is highly probable that much of the fading of silver prints experi enced of late years, while much older prints are unimpaired, may be due to the use of gelatine or glue without an anti septic as a mountant. Drying Prints.—If we desire to dry prints of large size, it is advisable to dry them as flat as possible, and thereby avoid cracks and tears. Blot off the superfluous water by means of the linen cloth previously recommended. Place two prints of the same size back to back, and suspend by two American clips in the drying room; but not from the clips used for the sheets of sensitized paper. When they curl at the lower corners, reverse them —that is to say, turn them upside down, but still back to back ; when taken down, they will be flat enough for most purposes. Prints of small size may be suspended in strings of two or three dozen, one below another like steps, and when nearly dry, they will drop off; if they are collected and placed face downward under a weight, they will become flat and remain so. Now let us suppose that the prints are of cabinet size, to be mounted on ordinary cabinet mounts, not reduced to the required size before toning, and we have decided to cut them by means of the glass-shape and sharp knife, as described in a former lesson ; under these circumstances the prints must be dry, and the cutting-shape held down firmly on the print to obtain the best results. To mount them, place six, albumenized side downwards, on a clean linen cloth, pass a brush well charged with starch paste over each, separately, working from end to end, and from side to side, being careful not to get any starch under neath, or leave any lumps or extraneous pieces on the print; have ready at hand a pile of mounts, some sheets of clean paper, a paper-knife, and a damp sponge. With the paper-knife raise the first starched print from the cloth, adjust it over, but not touching the mount, until the margin appears equal along the top and two sides; now lower the top edge on the mount, and gradually the remainder. If this has been successfully accomplished, which may be seen at a glance, cover with white paper, and rub the print well down all over with the paper-knife. Should any of the mountant be squeezed out at the edges it should be removed with the sponge. When the whole of the prints have been mounted, place them, face down wards, on a clean surface in a current of air; they do not alter in shape so much this way as when left to dry face upwards. To prevent the photographs from curling inwards, Mr. C. Keuchel constructs grooved wooden slabs or strips of moulding having a section, as shown in fig. 1., each slab being a trifle over two feet in length. The mounts are pushed into this grooving, six, end to end, so that they become arched. After mounting they are again slid into the grooving, and allowed to remain until dry. When the prints are nearly dry, they are in the best condi tion for rolling, an operation we will briefly describe, since, for large pictures, at least, the rolling-press is a necessity. The subjoined figure, as will at once be seen, represents a rolling-press, the moveable bed being of polished steel, and the pressure, which is capable of acting on the print by means of the roller and steel bed, is regulated by the adjusting screws at the top. Brush the surface of the print—also the polished steel plate—with a camel- hair brush, or rub with an old silk handkerchief, to remove particles of dust or paper; place the print, albumen side in contact with the steel plate, and pass it through the press twice, which flattens the pic ture, and produces an even and polished surface. By heating the plate a more brilliant surface will result. Rolling presses are manufactured for both cold and hot rolling, and can be procured at any of the stock Bouses. Where rolling is not permissible, as in the case of scrap-books, a good plan is to attach the print in the usual way to the leaf of the book, damp the back of the leaf slightly with a sponge, and set aside to dry, placing a piece of stout cardbord on each side of the leaf. A strong paste should be used, such as the following, and when dry the surface can be very much improved by passing a warm iron over it, substituting plate glass for the cardboard beneath :— Best Bermuda arrowroot, or ) Kingsford’s Oswego corn- > 3} ounces flour ... ••• ••• J Water ... ... ... 28 ,, Nelson’s No. 2 gelatine ... 160 grains Methylated spirit ... ... 2 ounces Carbolic acid 12 drops
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