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508 THE PHOTOGRAPHIC NEWS. [October 24,1862. diagrams, and particulars of some improvements in photogra phic apparatus, and to indulge in the hope of a space in your valuable journal, should they be worthy of your notice. Pour years ago I commenced operations as an amateur photographer, with a common made French camera, having the carriers of the ordinary description, except that the corners of the glass were made to rest on pieces of bone, which were secured to the back of the carrier with iron screws. Now, the nitrate of silver which drained from the glass, coming in contact with the screws, produced very ugly stains on the collodion film, and very quickly destroyed the screws, and allowed the pieces of bone to drop off, and the mitres becoming disunited, rendered the carriers perfectly useless. In this dilemma, I was compelled to contrive some thing in lieu of them, when I hit upon the following cheap and simple contrivance, which has answered the purpose exceedingly well, and can, in cases of emergency, be con- structed with a penknife. They should be made of hard wood, and coated with shellac varnish. I do not consider silver rests necessary, as I have not been troubled with stains since I have had mine in use. I trust the annexed diagram will explain the plan I propose. A A fig. 1 is a collodion back of a quarter-plate square camera. B B, pair of my carriers for glasses 34X22 and BACK KOK A QUANTER SQUABS CAMERA. i Groove for Gutta Percha Tubing. 24x2. To take plates of the latter size, the carriers have only to be reversed. They have a projection at each end to fit the notches b, to prevent them from shifting. C, one of a pair of carriers for glass 44X34, these arc to be inserted in place of the above; these have projections at the ends, which also fit the notches b. The plates can be placed horizontally for views or groups, by placing the ends of the carriers in the notches, c. The next modification is in the sliding shutter of the camera back, to obviate the “ stars and comets” which most photographers complain of, and, I believe, attribute chiefly to the dust caused by the friction from the working of the sliding shutter, which I have found to be the case if it fits tight enough to exclude the light from the camera. Fig. 2 represents what I suggest. The shutter should be french- polished, and made to work perfectly easy through the groove; then, in a recess on each side of the shutter, is inserted a piece of vulcanized india-rubber tube, about 5-1C outside diameter, and, to protect them from friction, they should be covered with silk ribbon of the required width, so that the edges nearly come together. Their elasti city causes them to press the shutter, allowing it to work SECTION or NEW IMPROVED BACK. d Gutta Percha Tubes. f Door. g Sliding Shutter, very soft and easy, avoids friction and dust, and effectually keeps the light out of the camera. I prefer the shutter without a hinged joint, especially in small cameras. The piece, e, which contains one of the tubes, is secured with a screw at each end, so that the tubes can be taken out occa sionally, and freed from any dust that may have accu mulated. The tubes may be applied to any ordinary back, by enclosing them with strips of wood outside the frame. Fig. 3 is a half-plate dipper, which answers exceedingly WOODES DIPPSI. well; it is made of hard wood, coated with shellac varnish, on the projecting piece at the bottom are two silver pins, to keep the glass from wearing off the varnish ; and I should also recommend two pieces of silver wire to be laid on the stems, extending upwards, say two inches from the project ing piece of wood, and the ends taken through the stems and rivetted. Small dippers may be made of the usual shape, and the projecting piece at the bottom dispensed with, simply having the two silver pins projecting to support the glass. Want of experience, or even carelessness, may have been the chief cause of all my mishaps and failures; but if they have been overcome by contrivances which may provsse viceable to any of your numerous readers, no one will be more gratified than myself. The Grove, Battertea Rite. Octo Sr,— most coi photogr to expla or decon Io the m I it woule I Section, tad chei i It is t i owe t "toning, deposit c in your tending . "toning ♦ion, but Bold of binutely ^llic s An additi lttews tl te electr y the : though lssess, । “kali is : Relieve Ppear to 30 much M with te acid i Bany difl ^Ur, ev I Pesence « Neasy to ! 5the; : Bents 0 & ad C ln 8 Necid’b sE iwher C’hose p 3 on the "ed befo kyyerco F_B BBblesom "Bess, ’ Vhn cu ♦S’ 1 ? d C- 7 th bygen let sue Acted 01 661 ^‘.Chl w We ca . V? on it “ergay
