The Optical Magic Lantern Journal (June 1899)

The Optical Magic Lantern Journal and Photographic Enlarger. 71 How to connect up a Dissolver. No. I.—B1-unrau. ty fe Sy numerous pipes used at the back YA me of the lantern for connecting up (£2 7) the dissolver in a bi-unial or triple (g SS lantern looks somewhat bewildering, and to him it would appear no sy” small job to join them up were all the a tubes removed. In reality, this is by no means a task of any great magnitude once the | principle is understood. In the bi-unial lantern two methods may be pursued, and either one six-way dissolving tap or two four-way taps may be employed. We | will take the six-way tap first, and would refer the reader to Fig. I. The entrance to this tap Supe CAPK o the newly-fledged lanternist the | is at the two middle tubes, that on the right being for oxygen and that on the left side for hydrogen, the outlet for these gases #7 being atthe same sides as the respective inlets. This | will be readily understood by blowing through the tap. The lower jet a is connected to those outlet tubes which run in direct line, 2¢., top | right and bottom left; whereas for the upper jet B itis connected bottom right and top left. / new three-decker. Prominent Men in the Lantery World. No. XVIII.—Mr. R. J. SAMBRIDGE. N St. Andrew’s Grand Hall, Glasgow, Mr. Sambridge had during the week of our visit shown pictures to close on 80,000 people. We found him where a true lanternist loves best to be—beside hie apparatus all ready for action. There was nothing more to be done before lighting up. | Each glass was scrupulously clean, each brass adjustment polished until it shone, and the magnificent ‘‘ Docwra’’ triple stood about 120 feet distant from the screen. To the request for some information regarding his early lantern days, Mr. Sambridge smiled, and much to our surprise, said that he had never been a beginner in the usual sense of the term! He did not start with a ‘single and blow-through,” and gradually climb up the ladder of experience to his present complicated lantern. ‘‘I knew little or nothing of lanternism,” said Mr. Sambridge, “‘ but I was well acquainted with mechanics, when Dr. Harry Guinness put me in charge of his fine That was about 10 years ; ago.” | It is perhaps preferable that each lantern , should be controlled by a separate dissolving tap, and for this purpose two four-way taps are employed. The two side stand-pipes are secured to the lantern and are made of metal, connection being made to these by means of rubber tubing, as shown in Fig. II. In the former illustration one movement of the lever serves to turn one jet up and the other down; whereas in the second case, in order to diseolve the one lever is turned on, and immediately afterwards the other is turned off. ' into the hall. Since then the operator and his principal have travelled all over England, and also most of Scotland and Ireland. Almost invariably the largest available hall in each town is taken, and the crowded audiences which have gathered to hear and see, justify the high aim. “JT have given over 1,000 exhibitions,” said Mr. Sambridge in reply to the next question, and then with a burst of pardonable pride, he added, ‘‘ and I have never had a single hitch!” « And to what do you accredit such a feat?” we asked. “Perhaps the chief reason lies in the fact that everything is always in absolute readiness before the doors are open to the public. I have made this a rule. Focusing, centering, and registration are all over before I let anyone I thus test every tube and stop ' cock in private before each exhibition. Another reason is that we carry duplicates of each piece of apparatus which are at all likely to break or ; get out of order, and that precaution has often saved me from trouble.” We had previously heard of Mr. Sambridge’s partiality to long distance work, and he acknowledged that his 14 inch lenses were his favourites. Along with these he uses tripie