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January, 1953
17
NEW EQUIPMENT
As in the case of technical papers, the Society is not responsible for manufacturers' statements,
and publication of news items does not constitute an endorsement.
16mm. POWER OPERATED REWINDER
The equipment manufactured by Burgess, Lane & Company, Block J, Sunleigh Works, Sunleigh Road, Wembley, Middlesex, consists of a portable poweroperated 16mm. rewinder, embodying entirely new principles of film drive.
The driving motors and electrical control gear are in a base, measuring 25ins. by 6ins. by 5ins. and geared rewind heads are mounted on either end. An illuminated inspection panel 6ins. by 3ins. is also provided. The weight of the equipment, including 18 feet of high quality 3-core cab tyre cable, is 231bs.
The unit can be operated at speeds as low as 12 frames per second to enable visual inspection to be carried out, or at 20 ft. per second. Using 400-ft. spools at maximum speeds, the motion of the film can be arrested within 6ins. without imposing extra tension and can be instantly reversed. The unit has a maximum capacity of 2,000 ft.
Each rewinder head is provided with a separate motor so arranged that when rewinding normally from left to right, the right hand motor becomes the master drive and the take-off motor becomes the follower. This latter motor revolves at a slightly lower speed than the take-up motor, the difference in power developed between them resulting in a film tension which is continually variable. No excessive tension can be applied to the film at any time.
Operation is by means of a single centralized
control, having a normal centre-off position. Turning this control slightly to the right starts the rewinding operation on the lowest speeds, further rotation increasing speed. Turning it to the left, repeats this operation in the reverse direction.
(Photograph by the "Film User").
THE LEERASER
The practice of bulk erasure of magnetic recordings is of particular importance to studios and other professional users of magnetic recording. By this means tapes can be erased without the tedious process of running them through a recording machine, thus saving time and avoiding unnecessary wear on both tape and machine.
The " Leeraser " is a compact unit designed for this purpose. It consists of a neat alloy casting containing a magnet system which develops an intense alternating field. Operation is simple. The spool
is placed on the spindle, slowly rotated and then lifted clear, the whole sequence taking only a few seconds and involving no rewinding.
The " Leeraser " can also be used for demagnetizing small articles such as recorder components, editing scissors, screwdrivers, etc. It operates from 220250v. 50 c/s A.C. mains and consumes less than 2 amps. The price is £7 10s. It is manufactured by Leevers-Rich Equipment Ltd., 37 Wardour Street, London, W.l.
Errata
It is regretted that Figs. 2, 3 and 4 in " The Presentation of 16mm. Films," by Mr. H. S. Hind, appearing in the December, 1952, issue, page 160, were transposed. The above slip will rectify the error. On page 1 62 of the same article, line 3 1 of the discussion please read, "rack" and page 161, column 2, line 26, read 10 ft. 6 ins. by 12 ins. by 12 ins.
" International Conference on Cinematograph Standards," 21, 90, line 24, for 0.80 ins. please read 0.080 ins.