The Optical Magic Lantern Journal (April 1893)

70 The Optical Magic Lantern Journal aiid Photographic Enlarger. The Lanternists Den. No VIl. By C. E. Renpun. Notes on Maxine a Lame (Concluded). To make the bonnet take a piece of thin flat charcoal iron measuring 12in. by 44in. (see Fig. 12). With dividers draw lines A A, din. ; BB, 44in.; and C CG, din. from each end; also D D, din.; and EE, lin. from cach side edge. With cold chisel cut out centre round lines C C and E FE. Next cut away the trianeular pieces PFT PF, c wood block and bend to right angles at BB; then DDD D should also be bent to right angles, the sides first, and afterwards back and front. The corners must be secured by small copper rivets. Let lines AA be now bent; one to form a round socket or joint, which is intended to swivel on the wire on the one side, while the other must be bent to form a clip on the other side. The joint need not be closed until the finish. Two Lin. strips of iron of the required length can now be fixed at front and back, as at G (Fig. 13) ; first bending over tin. to right angles. This forms a ledge for glass to rest upon, and four other strips same width and 3in. long, bent nearly clouble so as to form grooves for glasses to slide into, must be fixed two at front and two and back, so that a piece of inicro-glass 3tin. by 23in. will fit easily in. . Cut two more pieces of iron 2%in. long by 2in. wide, draw line along each zin. from edge and bend to 65°. Fix these inside bonnet so as to form air draughts (see dotted line H, Pig. 13); when in position the space between them should be lin. only, and should stand about gin. above the wick, furthermore, should partly cover wick holders, Nos. 1 and 4, when looking down through top. It may | | be advantageous to slightly dome them near centre. Apiece of perforated zinc must be cut to cover bottom, in the centre of which an ' opening must be made to allow the holders to come easily through. Now make a frame or flange to receive chimney measuring 2tin. by liin. A strip of iron #in. wide and Shin. long ; draw a line ysin. from edge, divide it off from one end. First a line Itin., another 3in., another dtin., and another THin.; now cut with shears down each mark to the side line, and bend it right, when it will be found to form an oblong shape with tin. for the overlap. Hold in a sinall hand-vice in position and rivet. Now place in benchi-vice so that one of side lines is level with top of vice-jaw, and then tap over the edge flat, and treat the other three sides in hke manner. This flange can now be fixed in its position at top of bonnet, the joint of bonnet can be sprung on to side wire, and ' clamped so as only to leave sufficient play to work on. The last, but by no ineaus least important part is the chimney. Most erroneous is it to | suppose, as some have done, that its dimensions \ ' may be anything or nothing. Screw into vice square | Make it double the size than that here given, and you will _ simply have a wretched smoke-box. Prepare two pieces of iron Yin. by 9in., mark them off as Fig. l4 Cut a piece of wood sane size in every way, except length, as the receiving flange on top of bonnet. Weep them together and turn them round the wood block together, when this has been done, separate thein and neatly rivet so that one nicely slides into the other — let them work smoothly. With the shears cut down about Idin. in Vig. 14. six places, as shown by dotted lines (ig. 14), this on the inner tube only. Slightly bend outward the three picces of metal, which, when thus relieved, will be found to form a spring and prevent the outer tube from falling, as otherwise ' it may be apt to do were this precaution not ; taken. In regulating the draught the top can be pulled up or down at will. As to the top, an arched piece of iron is riveted to end of outer tube, but as to the shape of design of this I would just refer to the showman who said, “Aly little dears, they are penny plain and tuppence color'd, so you pays yer inoney and takes yer choice.” My readers can get the glasses cut by any local dealer. Micro-glass