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The photographic news
- Bandzählung
- 35.1891
- Erscheinungsdatum
- 1891
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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. 1694, February 20, 1891
- Digitalisat
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Zeitschrift
The photographic news
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Band 35.1891
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152 THE PHOTOGRAPHIC NEWS. [February 20, 1891. Storing and Repeating the Discharge of Magnesium Powder through a Gas, Oil, or Spirit Lamp, for use in Flash-Light Photography.'’—February 11th. 2,616. A. J. Bunches, 6, Livery Street, Birmingham, “ Cam eras.”—February 13th. 2,632. M.A.WIER, 115, Cannon Street, London, “Cameras.” —February 13th. 2,675. W. ROcKLIFFE, 35, South Street, Durham, “Registering Apparatus for Magic Lanterns.”—February 14th. 2,725. W. Sandebs, 6, Lord Street, Liverpool, “ Cameras.”— February 14th. Specifications Published. 905. January 17th, 1890.—“An Improved Lens for Deflect ing Light.” Theophilus Coad, 31, Soho Square, London, Electrician. The lens is made of the best glass or crystal, the base being preferably slightly convex, and the front of a parabolic form cut with a number of straight running facets from base to apex ; the facets being preferably twelve in number. A lens as above is primarily intended to be used with miners' incandescent electric safety lamps. 1,394. Jan. 27th, 1890.—“A Levelling Instrument.” GEORGE James Heaton, 2, Coburg Villas, Albert Road, Old Windsor, Berks, Photographic Artist. The object of this invention is to produce a levelling instru ment which shall show at a glance whether or no the surface to which it is applied is level in every direction, such instru ment being specially suitable for testing the verticality of the “swing-back” in photographic cameras, the said instrument being attached to the camera or otherwise. According to this invention I take a metal pillar, preferably square in sec tion, having each face thereof accurately perpendicular to the adjacent faces, and its ends accurately parallel to each other and at right-angles to the sides of the pillar. I next bore a hole longitudinally through the centre of the pillar, which hole is of two different diameters. In the lower fourth part or thereabouts of the length of the pillar the hole is about one-eighth of an inch in diameter, and the remaining three-fourths of the length of the pillar has the hole through it about three-eighths of an inch diameter. In the larger hole I insert a piece of glass tubing, in the centre of which is suspended by a few fibres of silk, or other suitable material, a small rod preferably of metal, and about one-eighth in diameter, having the lower end thereof cut off at right-angles to the length of the rod. I also firmly fix in the smaller hole, concentric with the glass tube, a similar rod cut off at right-angles to the length thereof, the upper face of which is just clear of the lower face of the suspended rod. The metal pillar is cut away, except just at the corners, for about three-quarters of an inch, so as to form sight-holes, the contiguous faces of the two rods coming in the centre of the “ sight.” On setting the instrument on a flat surface, if the surface is level the two rods will appear as one ; but if the surface is not level the upper rod will project beyond the lower one on that side of the surface which is below the hori zontal. Similarly, if the instrument is held vertically against an upright surface, say the focussing screen of a camera, the position of the rods will indicate if the surface against which it is placed is vertical. 1,736. February 1st, 1890.—“ System of Glazing.” William John Hall, 16, New Market Place, Saint Helen’s, Lancaster, Architect, and George Charles Whitfield, 1, Hardshaw Street, Saint Helen’s, Manufacturer’s Agent. This patent is for constructing the frames of windows, especially shop fronts, as that the same shall in all cases be fixed with the rabbeted side outwards, in order to enable the glass to be glazed from the outside, either in the ordinary way, or be bedded in the rabbet with india-rubber, felt cloth, or other soft material, secured with beads or mouldings screwed, clamped, or otherwise fastened in such manner as to be easily removable either for new glazing or replacement. 3,446. ilarch 4th, 1890.—“A Photographic Camera.” Albert Peter Riley, 2, Upper Fenton Street, Commercial Road East, London, Photographic Material Dealer. This camera is especially intended for use when travelling, but is also of general application and for indoor work. An important feature of my invention is that I employ only one moving part, which is actuated by the one hand only of the operator so as to move the dry plate into position, or focus of the lens, and so as to uncap and cap the latter for exposure of the dry plate. In the camera, or box, I provide an end less band of leather, sheet metal, or other suitable material, such band passing over a roller at each end, that is to say, at the back and towards the front of the camera. Means may be provided for keeping the band sufficiently taut, or to keep it from slipping. On this band I fix at equal distances apart any suitable number (say a dozen) of holders or clips. Each clip oi holder is adapted to take a metal sheath, which con tains a dry plate. The same lever, handle, push rod, knob, or pull serves to actuate both the endless band and to cap and uncap the lens. By means of the apparatus instantaneous and time expo sures may be effected conveniently by the use of one hand only rapidly in succession, and while the apparatus is carried under the arm in the bag, and without drawing undue attention to the operations. 17,012. October 24th, 1890.—“ An Application of Xylonite, Celluloid, and the like.” George Lee Adders and Charles Herbert Elliott, 10, Bush Lane, London, Electrical Mechanicians. • Our invention relates to a new or improved use for and application of any of the preparations known as xylonite, cellu loid, and the like, by coating the surfaces of substances bearing devices or readable matter therewith. In carrying our invention into effect, we print, emboss, in dent, or otherwise prepare a fixed design or reading matter, or both, upon cardboard, paper, wood, ivory, metal, or any substance or material suitable for the purpose, in any colour or combination of colours, as may be required, and coat or cover the same upon either or both sides thereof with xylonite, celluloid, or the like, according to the uses to which the sub stance or material so treated may be intended. The coating thus given, being perfectly transparent and highly glazed, im parts to the design a high degree of finish, and, at the same time, renders it perfectly water-proof. Our invention, in its salient points, is the application of the coating' or covering previously mentioned to substances and materials bearing designs or readable matter that would be considered perishable or oxidisable when exposed to damp, or to advertisements that may require to be kept clean by wash ing, such as show cards and the like, prepared upon paper surfaces ; or metallic advertisements that require periodical cleaning to remove oxidisation. Our invention may be equally well applied to substances or articles not exposed to damp, and may be successfully used in coating business cards and the like, so that, if soiled, they may be sponged with clean water, and their original brightness restored. 20,820. December 20th, 1890. — “Applying Gum or other Liquid to Sheets of Paper.” Hermann WItEL and August Landgraf, Zimmerstrasse, Hamburg, Germany, Machine Manufacturers. This invention relates to machines for applying gum or other liquid for the superficial coating of sheets of paper or other material placed upon the machines. The sheets are transferred from an adjusting table to a grasping device which is arranged on the circumference of a metal cylinder. After the locking of this device, which grasps the edge of the sheet, the cylinder begins to rotate, and carries along the sheet on its periphery. Underneath said metal cylinder is a small roller journalled in the frame of the machine, which roller lies with part of its periphery immersed in a vessel which contains the solution of gum or other liquid to be applied. Whilst the sheet travels between the cylinder and the roller
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