The Optical Magic Lantern Journal (April 1898)

56 rises. When a certain quantity of the gas has been used, and in consequence the platform on the upper part of the bag falls a particular distance, tne lamp is automatically moved under the second retort, and so on as the gas is used. In this manner everything is automatic, and could, if desired, be placed at any distance from the lantern. From the generator the gas passes to the ether saiurator, as shown by the piping, where one stream of the oxygen takes up ether vapour and burns as ordinary house gas, and the other stream reaches the mixing chamber as pure oxygen. In this instance Mr. Locke has provided means for attaching the saturator to the door opening of the lower lantern, the better to keep it warm, and thus assist the vaporisation of the ether. He (ever on the safe side) has devised and added an appliance to trap any vapour which |; may be condensed in the tubing. This will be seen hanging down at the side of the lantern stand. From this the arrangement of the tube connections to the jets will be plainly traced. The jets are those of Mr. Locke's design, and are of great power. At the bottom lantern a cinematograph has been fitted—not seen in illustration—and the whole outfit is as complete as the most fastidious could desire. Important Trade Mark Case. VE Tp name Kodak is well known as re me the trade mark of the Eastman : Photographic Materials Company, ‘es ) Limited. It appears that towards i the end of last, year the John age Griffiths Cycle Corporation, Limited, incorporated a new company termed the Kodak Cyele Company, Limited, so the Eastman Company made an application to restrain the delendants from using this name, the points being enumerated under four headings. The judge, after hearing evidence, granted an injunction to restrain the defendant company or any of them from carrying on business under the name of the Kodak Cycle Company, Limited, or under any name comprising the word “ Kodak ” likely to mislead or deceive the public into the belief that the defendant company is the same company as or is connected with either of the plaintiff companies, or that the business | of the said companies or either of them 1s the same as or is in any way connected with the business of the Eastman Photographic Materials Company, Limited. He also granted an injunction to restrain the defendant companies and ' each of them from selling or offering to sell any | of their cycles or goods as ‘‘ Kodak.” I think (said the judge) that will sufficiently protect the | plaintiffs. Defendants to pay the costs, including the costes of the Comptroller. r yw | How Cinematographic Machines Work.—No. IV. By MAGNET. CINEMATOGRAPH recently invented by H. Joly, of France, is shown at Fig. II. The main shaft is open at ©, and is operated by means of an endless chain c, which passes around a sprocket wheel mounted on the sbaft k, and also around the driving pulley. The film Be feed-rollers H P receive their motion through a train of tooth-gearing G' G? G. The feedrollers are provided with pegs which gear into holes along both edges of the filmr. To start, the film is drawn into a loop between the roller u, and rollers k x’. This is to allow the film to be drawn forward at intervals by an oscillating frame x, which receives its motion from a crank disc v and a connecting rod x. During the exposure the film remains stationary