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The photographic news
- Bandzählung
- 35.1891
- Erscheinungsdatum
- 1891
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- Englisch
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- F 135
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- Hochschule für Grafik und Buchkunst Leipzig
- Digitalisat
- Hochschule für Grafik und Buchkunst Leipzig
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- http://digital.slub-dresden.de/id1780948042-18910000
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- oai:de:slub-dresden:db:id-1780948042-18910000
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- Bandzählung
- No. 1692, February 6, 1891
- Digitalisat
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Zeitschrift
The photographic news
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Band 35.1891
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Band
Band 35.1891
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February 6, 1891.] THE PHOTOGRAPHIC NEWS. Ill compulsory subject in all public elementary schools.” Effect was given to this on June 16th, when an influential deputation waited on Sir W. Hart-Dyke, who acknow ledged the importance of the body which the deputation represented, and of the subject under consideration. He said that he had long been in favour of such a system, and that they had his most cordial sympathy as far as the general policy was concerned. He thought his depart ment would not be able to carry out the suggestions of the delegates before the system was legally authorised, but that, bearing in mind that the education given to the children must not only be the best, but the one most immediately suitable to their welfare, progress, and success in life, he would be glad if, in the future, he were enabled in any degree to forward the objects the deputation had in view. patent IEntellgence. Applications for Letters Patent. 1,400. J. B. King and J. BICKLE, “ Combination Cameras and Lanterns.”—January 26th. 1,450. M. Johnstone, 104, Queen’s Road, Hastings, “Cameras.”—January 27th. 1,507. N. Lazarus, 8, Quality Court, London, "Lenses."— January 27th. 1,528. C. W. Cox, 8, Lord Street, Liverpool, “ Cooling Magic Lanterns.”—January 28th. 1,583. A. Gray, 53, Chancery Lane, London, « Producing Names, Numbers, or Description on Photographs.”— January 28th. 1,590. W. W. Horn, 151, Strand, London, “Diaphragm for Cameras.” Lyman G. Bigelow, Unitsd States.—January 28th. J 1,621. J. B. Brooks, 115, Great Charles Street, Birmingham, “ Clip for Holding Photographic Printing Frames.”— January 29th. 1,632. T. Tulloch, 64, Church Street, Inverness, “Glazing Roofs without Sash Bars or Putty.”—January 29th. 1,736. O. Imbay, 28, Southampton Buildings, London, “Photographic Developers.” The AcTEx Gesellschaft fur Anilin FABRIKATION, Germany.—January 30th. 1,793. F. J. Upton and G. Stephens, 433, Strand, London, “Photo-Mechanical Colour Printing.’’—January 31st. Specifications Published. 3,203. February 28th, 1890.— “ Coating and Tinting Glass Surfaces.” Charles Leigh, 128, High Street, Homerton, London, Artist. This invention relates to a process of coating and tinting glass surfaces for the reception of paintings or other decora tions. Although any glass surface may be treated, I have found that my process is particularly applicable to opal glass, which heretofore, so far as I am aware, has never been tinted, and any colour applied to its surface has had to be burnt in. In carrying out my process, I roughen the surface of the glass to be treated by grinding or in any other suitable way. I then apply the coating, consisting of suitable gums and a sol vent, preferably fusel oil. Any suitable colours are then applied to the coat, and are fixed on by any of the well-known mordants, such as chloride of tin, acetate of alumina, tannin, and the like. When I employ alcoholic solutions these mor dants can be entirely dispensed with. I have found that a solution formed of the following ingredients gives satisfactory results, and for this purpose I dissolve 3 ounces of shellac, 1± ounces of sandarac, 1} ounces of mastic, 1} ounces of benzoin, in 1} pints of alcohol. I then add 1| ounces of Vene tian turpentine, and after the whole has dissolved the solution is filtered and an aniline dye, either vegetable, mineral, or other dye, but preferably vegetable, soluble in alcohol, may be added. I have also found that four parts of shellac to one part of borax dissolved in boiling water will make an excellent coating. Good results may also be obtained if one part of shellac (or any other gum soluble in alcohol), dissolved in four parts of alcohol, be applied to the surface and immersed in a solution of aniline dissolved in boiling water with any of the well-known mordants. The coating can be applied to glass by a brush, rag, or other suitable means, or it may be floated upon the glass, or the latter may be dipped or immersed in the coating solution. By means such as described, I am able to produce a tinted opal glass of any shade of colour, which will not only keep its colour and remain unaffected by atmospheric changes, but is also capable of being washed without being in any way damaged or affected. 3,392. March 4th, 1890.—“Detective or Hand Cameras.” Walter Griffiths, Highgate Square, Birmingham, Manu facturer. The object of this patent is to promote cheapness in hand cameras, and it describes one made of millboard. 3,482. March 4th, 1890.—“ Photographic Cameras.” Louis Van Neck, Brussels, Belgium, Merchant. This invention relates to photographic cameras. The camera constructed according to the said invention has the appearance of a case covered with leather, and presents in front two circular openings, one being designed for the objective, and the other for the sighting. At the upper part of the camera is arranged a handle for the transport, and a square opening provided with a deadened glass protected by a spring actuated shutter. The camera possesses at its lower pari a rectangular opening likewise provided with a deadened glass masked by its metallic shutter ; the lever of the obturator having an exterior helical spring which can be detached at will, and expanded so as to act upon a series of tappets, and a knob provided on a rack designed for the focussing. On the side of the apparatus is arranged a presser of the disengaging device. The camera has at its rear a closing device operated by a spring, which device enables a portion of the cover to be removed, and the bag which serves for changing the plates, or films, or the key of the roller frame to be uncovered or laid bare ; furthermore a metallic handle, and an opening for the numbering frame. My improved apparatus is composed of two distinct parts, one being fixed, and the other removable. The latter part in cludes the portion of the cover hereinbefore referred to. The anterior fixed part is formed of a reservoir upon which is placed in front the objective actuated by the rack for the focussing, and immediately preceding the obturator, having a mirror which exactly closes the opening on the side of the chamber for the plates or films placed behind. Above, the deadened glass is at the exterior, and reflects the image pro duced by the objective. A number of levers actuated by springs enables the obturator to be put under tension without uncover ing the opening of the chamber towards the sensitive plates or films. At the moment of the disengagement, the mirror is raised and lowered with a velocity corresponding to the tension of the springs acting upon the levers. For pro longing the exposure, the obturator can be manipulated through the medium of a string or the like. The posterior fixed part of the apparatus comprises a chamber which can hold, say, from twelve to thirty sensitive plates or films possessing frames of metal, celluloid, or other light material. Use can also be made of a roller frame having, say, from forty-eight to one hundred sensitive plates or films. After each exposure the sensitive p'ate or film can be changed by means of a key ; or giving a quarter of a turn to the handle at the rear, the last frame holding the sensitive by plate or film is raised in the impermeable bag in such a manner that the operator can seize it, and easily place the same before the others without fear of making a mistake. At the same time the numbering disc is caused to advance through the distance between two notches, and in the opening provided for this pur pose appears the number corresponding to the figure indicating the number of plates or films used. In like manner a hand shows upon the roller frame the number of turns imparted to the rollers.
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