Kinematograph year book (1927)

2i8 The Kinematograph Year Book. can be adjusted for tension even while the machine is running. By swivelling the motor upon a bracket motor belt tension is constant. The gate has an arrangement by which six teeth of the intermittent sprocket engage the film instead of the usual three teeth. The Hahn-Goerz has a fixed optical centre and framing is done by a T shaped handle in either direction which operates an eccentric cam movement. A description of the " Artisol "mirror arc with which the motor is fitted is superfluous at this stage, but exhit itors have the choice of an 8 in. or 10 in. lamp, the latter being specially intended for the largest theatres. A special arrangement now enables the Hahn-Goerz to be accommodated to the steepest throws without any possible injury to the mirror, samples of which have not required re-silvering after 18 months' use. The new slide attachment of this projector, by which the light for the arc is deflected into a slide projector outside the lamphouse, is a boon to operators. As the picture can be focussed immediately in the centre of the screen, a fade on the film is possible without interruption. A speed indicator and automatic motor-driven carbon control are other invaluable accessories. The remarkable number of Kalee installations that have been made during the year points to the exhibitors' valuation of Model No. 7 of this British projector, which, like its forerunners, combines simplicity with efficiency. Many improvements are embodied in this new model. The locking cam of the intermittent movement, for example, is of new and novel design, constructed of steel, hardened and ground perfectly true. The gate has been re-designed so that lateral movement has been overcome by adopting automatic tracking rollers in place of a fixed width of gate track. A new type of lens support is swung from a point at the top of the gate and has an automatic catch which permits easy threading of films. A new loose type of shutter spindle has been adopted, and requires no attention once the shutter is set correctly. The shutter itself now revolves inside a detachable guard, which, while protecting it from damage, also prevents possible injury to the operator. In the improved and simple form of automatic light cut-off the action is dependent on oil friction between two .steel discs. At the back of the gate a small steel shield is fixed to keep it cool and a large shield of steel plate on the back of the mechanism from the top spool box prevents the film running into the heated lamphouse should a break occur. The No. 7 lamphouse is of extra large capacity, with large sight glasses ; the base is clear of protuberances that may prevent proper cleaning. The new Kalee mirror arc has proved a remarkably efficient illuminant. In this 8 in. model the central hole in the mirror has been done away with, and the interposition of the thin 8 in. convex condenser has proved an effective heat absorber. Sprocket replacement is easily performed by the unscrewing of the side screw which secures either feed or take-up to the shaft. The many users of the Kamm projector testify to the quality of its performance, and the latest Wembley model is, indeed, a remarkable example of small engineering. The distinctive feature of this projector is the mount KALEE No. 7. THE KAMM. FOR ALL KINDS OF CINEMA PROJECTORS, MIRROR ARCS, LENSES, ACCESSORIES, FURNISHING AND ELECTRICAL FITTINGS, THEATRE EQUIPMENT LTD. CANNOT BE BEATEN. 179, WARDOUR STREET, LONDON, W.l. Tel. : Regent 1373. 'Grams : " Theatequip, Westcent."