Cinema News and Property Gazette Technical Supplement (1924-1925, 1943, 1946)

July 31, 1924. Supplement to THE CINEMA NEWS AND PROPERTY GAZETTE. 21 A NEW HOME-CINEMA PROJECTOR. WITH VERY OBVIOUS TRADE OSES. Several very interesting and admirably designed cinema projectors, intended more particularly for home and private use, have been introduced of late ; but certainly one of the best — if not actually the best — and most practical so far is the Hahn-Goerz Home Cinema pro The Hahn-Goerz Projector. jector, marketed by Peeling and Van Neck, Limited, of 4-6, Holborn Circus, E.C. 1. This firm, it will be generally known, represent in this country the famous cameras, lenses, and other scientific instruments associated with the name of Goerz. As will be gathered from our illustration, the construction and design of the new machine is revolutionary. The film travel is horizontal, and the picture passing through the gate is picked up by a prismatic lens and projected to the screen in a manner that not only obviates any risk of damage to the film, but also makes the work of threading the film and running the projector so simple and easy that a child can learn it in a few minutes. The intermittent action is of the Maltese Cross type, designed with the minutest precision and working within an oil bath. The film, travelling horizontally over the gate, projects the image to a prism and thence through a special Hahn-Goerz cinem.i lens mounted in a focussing jacket on the top of the steel casing. Masking adjustment is made by means of a helically slotted f.leeve moving over the sprocket shaft, and operated by slightly turning a milled head. One of the characteristics of this machine is the twoblade segmentary shutter revolving around the lamp and through the condenser lens in such a way that it acts as a cooling fan alike to the lamp and the condensers, and obviates the least possibility of the film catching fire. The illumination is by a specially designed pointlight high-power gas-filled lamp, mounted upon a holder and base that enables the operator to instantly insert the lamp into the light-chamber or withdraw it therefrom. The simple practicality of this arrangement can better be appreciated from our illustration of the lamp in the fingers of the operator. The drive is from a silent-running 1-30 h.p. motor in the base of the projector; and this can be supplied for any voltage supply — either direct or intermittent. The regulating starter and switch are placed in the base of the machine, and a suitable resistance for the lamp is included in the outfit. A strong, but neat metal cover protects the apparatus when not in use. Some may be inclined to imagine from the compact and self-contained appearance of the machine that only a small picture could be got. Such, however, is far from the case. We obtained a brilliantly illuminated picture 6 feet in width in a daylight flooded room. The power of the lamp is simply wonderful. A word must be included anent the ease with which spooling and threading up is accomplished. The " grip " of the film upon the spool is instantly obtained, and the spool falls into its proper position with the slightest and lightesf pressure. Re-spooling is done on the machine itself; and a turn of a conveniently placed milled head adjusts loop or mask. The Home Cinema is supplied in two models, one of which has a spool capacity approximating to 800 feet, and the other 1,150 feet. The sound construction and practical utility of the Hahn-Goerz machine may be gathered from the fact that they are rapidly being The Lamp ready for insertion. installed in many of the film rooms of the leading renting and producing houses for the purpose of film editing and cutting work, for which it is admirably suited. The projector is portable in the fullest sense of the word, the