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[Mat 22, 1885. printing photographs on paper, as before described, mounted on similar perforated metal, vulcanite, or other frames, and for using such perforated or other frames for forming thin folding albums fixed on continuous lengths of woven substances, ribbon, leather, parchment, paper, or other flexible materials, and for applying the method of mounting the photographs or other illustrations to metal and other lockets, or ornaments, or cases, designed to show by means of double continuous rollers, or re volving centres, one, two, or more photographs or other illus trations, and for the ready changing them with or without opening the metal, or other ornamental enclosures or cases within which they are contained, the varying parts of all of which are applicable to other useful purposes; thus, for instance, the prepared papers and woven substances, and the method of mounting, provide a new medium or ground capable of being toned as required for the better luminous production and preservation of pictures and paintings, generally in oil, water, or other colours, and for drawing, and tracing, and trans parent uses. Specification Published during the Week. 3778. Alexander MELYILLE Clark, of the firm of A. M. and Wm. Clark, of 53, Chancery Lane, in the County of Middle sex, Fellow of the Institute of Patent Agents for “ Improve ments in photographic paper and in sensitive emulsions therefore.” A communication from abroad by E. and H. T. Anthony and Company, New York, United States of America. Dated 25th March, 1885. In carrying out the invention, the gelatine bromide of silver compound, it is preferred to employ, is a previously known and peculiarly prepared one, which consists in first softening the gelatine in water and adding bromide of ammonia, or an equiva lent bromide in suitable proportions, say about 150 grains of good gelatine, 60 grains of bromide of ammonia, and about 5 ounces of water, then dissolving the gelatine by heat, and adding gradually nitrate of silver, say about 100 grains dis solved in about 5 ounces of water ; then subjecting the whole to a continued heat for two or three days, more or less, at about 80® or 100° Fahrenheit, then, after allowing it to cool and set, cutting it into fragments and washing out the soluble matter, then melting it by heat and adding about its weight of water. To this or other like emulsion is then added for each 4 fluid ounces thereof, about one tea-spoonful, more or less, of the in soluble toothing substance, and thoroughly incorporated there with. To produce a very coarse grained or toothing surface, double the quantity specified of the insoluble graining or tooth ing substance may be incorporated with the sensitive material or emulsion. Different toothing substances insoluble in said emulsion might be used including the sulphate of baryta, pumice stone powder or emery powder of different grades, and the paper to which said sensitive emulsion is applied, may either be sized or unsized, and said gelatine bromide of silver emul sion, having the insoluble toothing substance incorporated with it, may be applied to the surface of the paper on which the positive photographic printing is to be done in any suitable manner known to the arts for applying other or simple emul sions. If the graining or toothing substance used be sulphate of baryta, which gives a superior finish to the white portions of ( the picture, then said sulphate may be used in a wet state, as when used in a damp state it readily assimilates with a gelatine emulsion, and is held in suspension therein. It might, how- I ever, be used in a dry state, in which case the proportion may be about 1 dram of sulphate of baryta to each ounce of the sensitive emulsion, first mixing it, however, in a weak solution of gelatine and water, and afterwards mixing and incorporating it in any suitable manner with the sensitive emulsion. Said t sulphate of baryta will be held in suspension just as the bro- t mide of silver is held, and does not affect the sensitiveness of a the emulsion. By incorporating an insoluble graining or toothing substance ( with the gelatine and bromide of silver, all special or mechanical 1 means for producing a grained or toothed surface upon the paper are dispensed with, and by means of a gelatine bromide c of silver emulsion having a toothing substance incorporated e withit, as described, the usual method of producing a mat or a roughened surface upon the paper, by rubbing down the sur face of the print with cuttle-fish bone and pumice powder is C dispensed with, and it is practicable to quickly prepare a surface d superior in uniformity to that heretofore produced for the pur poses specified, c a 9461. Alexander Melville Clark, of the firm of A. M and r Wm. Clark, of 53, Chancery Lane, in the County of Middle- g sex, Fellow of the Institute of Patent Agents, for “ An im- b proved panoramic photograph camera" (a communication r from abroad by Paul Moesard, of Paris, France. Dated 26th r of March, 1885. %, This apparatus is described on page 97 of our present volume, - and the claiming clauses of the specification are as follows 1st. A folding panoramic camera in combination with a com- t pass having a movable graduated limb for adjusting the position 8 of the camera as described. f 2nd. A panoramic camera, constructed of a semicircular top r and bottom a b, frame d, and flexible front, axis f carrying an e apertured plate, the hooks and hinges connecting the frames, the e whole as described in reference to the annexe 1 drawings. a 3rd. In a panoramic camera the means of adjusting the lens, I, consisting of the screws j actuating the lens carrier i, as shown - and described. 9612. Alfred George Brookes, of 55, Chancery Lane, in the County of Middlesex, Feliow of the Institute of Patent , Agents for “ Improvements in the preparation or manufacture 1 of photographic plates or surfaces for use in the production of etched or printing surfaces.”—Dated 30th March, 1885. These improvements have reference to an invention for which s I have obtained Letters Patent, having previously lodged a • complete specification fully describing the said invention, dated " the 29th day of January, 1884, No. 2312, and the present in vention has for its object to enable an existing photographic 1 negative or picture on a plate or film to be utilised for the pre- ’ paration of surfaces for printing or etching with by applying 2 to such existing plate or film, having the image or’picture upon ’ it, a sensitive film or layer, upon which added layer the desired ‘ graining or hatching has been produced in the manner already 5 described in my said former complete specification. In the case of negative or positive plates or films bearing pictures or images, the surfaces of which have been varnished, ‛ it is necessary to remove (say) by means of caustic potash or ' other suitable means that varnish, and then having treated that 1 plate or film with an insulating film or coating, the sensitive layer to be hatched, or grained, or prepared with like markings, is applied and treated as described in my said former complete specification for the like end. What I claim is, the production of a grained or stippled sur face upon a film or layer of chrom gelatine, or other similar substance, applied on an existing photographic picture or image substantially as and for the purposes hereinbefore described. 10,334. James STURROCK, Bank Street, Dundee, Forfar shire, N.B., for “Improvements in washing baths for photo graphic purposes.” Dated 30th of January, 1885. The claim is :— Washing baths or tanks fitted with one or more tipping or falling buckets in combination with one or more shut-off taps or valves, and flexible, or partially flexible syphons, and time regu lating taps, or with a combination of one or more floats, with or without tipping or falling buckets and time regulating taps, whereby the filling and emptying of the bath, with a period of slow action or rest between these operations, may be auto matically obtained, substantially as and for' the purposes described. Patents Granted in America. 316,933 Willis A. Bannister and Louis H. Bannister, Rochester, N.Y., assignors to the Eastman Dry Plate and Film Company, same place. “ Roller-holder for photo graphic films. Filed October 13th, 1884. (No model). Claim. — 1. The combination, in a roller-holder, of the measuring-roll G, and detachable spindle c', passing through the wall of the holder and carrying the indicator e’, substantially as described. 2. The combination, in a roller-holder, of the measuring-roll G, detachable spindle c', indicator c', casing p, and transparent plate f, substantially as described. 3. In a roller-holder for exposing photographic films, and in combination with the inclosing-case aud rollers, the removable end or side supporting the corresponding ends of the rollers, substantially as described. 4. The combination, in a roller-holder, of the measuring-roll G, removable end I, spindle c' and indicator e‛, substantially 48 described. 5. The combination, in a roller-holder, with one of the "me carrying rolls, of a friction pad or brake arranged to act on 1