The Optical Magic Lantern Journal (September 1892)
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102
The Optical Magic Lantern Journal and Photographic Enlarger.
open shelf inside the box, with a small lamp underneath which keeps it warm. The lamp is kept burning throughout the lecture and plays a double part—keeping the saturator warm and affording a light to see the reading or the position of the slides. As the lamp is inside of the box it requires no shield, and cannot be seen by the audience. The door of the box is taken completely off. The wooden frame with which saturators are usually provided is dispensed with. The saturator shonld have at least one tap to regulate the flow of oxygen, but in my practice I find it best to have two taps between the saturator and cylinder in addition to the regulator.
In the foregoing sketch the following letters will explain the parts : — . Saturator. . Small lamp. . Oxygen tube from Cylinder to Saturator and
jet joined with a Y piece.
. Tube from Saturator to jet. . Lantern. . Framed Slides. . Unframed Slides. . Reading. . Extra tap t2 regulate oxygen to Saturator.
OCanNanw wwe
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Hand-Cameras for Obtaining Slides for the Lantern.
“WPacile” +. (Fallowfield) . see March 1st,1890
No. 1 “Gioh” .. .. (Mawson & Swan) -4 May Ist, ,, » 2 “Quadrant” .. (W.H.Humphries& Co.) ,, June Ist, ,, » 3 “elipse” +. (J. Shew &Co.).. .. 4, July 1st, 4, » 4 “Burekoa” . (W. W. Rouch & Co.) .. ,, Aug. Ist, ,, » 5 “Key” .. .. (Platinotype Co.) .. .. ., Sept. Ist, 3 » 6 “Optimus” .. (Perken, Son« Rayment) ,, Oct, Ist, ,, » 7 “The Griffin” (Grifin & Sons, Limited) ,, Nov. Ist, ,, » 8“The Swinden-Earp” Patent .. .. .. ,, Dec. St, 55 » 9 “Collins” . (C. G. Collins) .. » Feb. 1st, 1891 » 10 ‘ Kodak" +. (Hastman Co,).. ... .. 4, Mar. Ist, ,, » ll “Guinea” .. (Walter Griffith) .. .. , April Ist, ,, ,, 12“ Vanneck” .. (Watson & Sons) . 5, May Ist, , » 13 “Chadwicks” (W.I.Chadwiek) .. » dune Ist, ., » At Bonanza” .. (R.& A J. Mercer).. » duly Ast, ,, » 15 “Repeater” .. (J. i. Shew & Co.) .. » Aug. Ist. , » 16 “Marvel” .(Wilson & Son).. » Sept. Ist. ,, » 17 “Talmer” (Talbot & Eamer) .. .. ,, Oct. Ist, ,, » 1S “She Omnigraph” (J. Lancaster & son) ,, Nov. Ist, ,,
» 12“ Ubique .. .. (Perken, Son &Rayment) ,, May 1st, 1892. » 20“ Daylight Kodak" (Eastman Company) ,, June Ist, ,, » 21 “The Radial” (Marion & Co.) +s ee 5, duly Ist, ,,
22 “The Surprise” (Levi & Co.) ” August Ist, x
No. 23 “ PERFECT.” WuEN introducing this hand camera Mr. Tylar,
of Birmingham, decided to supply a camera to
which one’s our owh lenses could readily be adapted. The camera is so simple to work, that there is little to describe; it is of the box pattern, and is supplicd with a dozen metallic dark slides, each to hold one + plate, these slides take up very little more room than the thickness of the glass.
The front which is to carry the lens, is set back
from the shutter to such a distance as will permit
: inches in diameter.
of almost any special make of lens being used, whilst the aperture in the front of the box is 14 A milled head at the lower
part enables the picture to be focussed, there being a range of from 4} to 6 inches. This racks out the back portion of the camera, enabling the distance between the lens and the shutter to remain the same. Both horizontal finders
and vertical are
| provided, also a ground glass.
The camera can of course be used on a stand, and time exposure given with a cap, but for instantaneous work a suitable shutter is provided, this opens in two leaves, which meet across the centre of the lens.
The instrument is made of mahogany and i measures 53 x 41 x 64 inches.
My. Tylar recently exposed six or seven dozen plates with this camera, during a_holiday to the Channel Islands, and intends making lantern slides from the negatives, and placing them, during the season, in the hands of Secretaries of any Photographic or other Socicty who would like to exhibit them before their members. :
This camera is also made in a twin form, Which cnables the operator to see the view on the top, of the cxact size in which it willa ppear in the negative.
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Outdoor Lantern Illustration. By Aurrep Watkins.
I Have recently organized a scheme of practical instruction for rural districts in Herefordshire
on the subject of bee-keeping, under a grant from the County Council. ‘The method adopted | is to send a properly equipped travelling van ~ from village to village, giving lectures and prac. tical instruction at each place.
The original idea was to give an evening talk from the platform of the van, illustrating the reiarks with the aid of diagrams and modern bee-keeping appliances.
The idea struck me to supplement this with a short additicnal leciure, illustrated with a