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1948-49 Theatre Catalog, 7th Edition, Page 243 (232)

1948-49 Theatre Catalog, 7th Edition
1948-49 Theatre Catalog
1948-49 Theatre Catalog, 7th Edition, Page 243
Page 243

1948-49 Theatre Catalog, 7th Edition, Page 243

will prevent any excessive sweating due to changes in temperature, and because the electrical windings of the Transvertr er have a baked-on insulating varnish, impervious to moisture, there is no danger of humidity and dampness affecting it, as might not be the case in other types of rectifying equipment having plates or stacks that can be damaged by too much dampness or flashed over and damaged in the spring due to accumulated moisture.

ttIn the spring, when the time comes to get ready for reopening, the following procedure is suggested to prepare the Transverter for operation:

1) Remove tarpaulin.

2) Examine for rodent nests in the event tarpaulin has been disturbed.

3) Check oil level if bearings are of the sleeve-oil Variety.

4) Close main switch and start unit with brushes still raised.

5) Polish commutator with canvas cloth pad.

6) Stop unit and drop brushes back onto commutator. Make sure all brush iinger tension springs are in position and that the brushes can be moved up and down freely in the brush holders. Replace short brushes.

7) Restart unit and allow to run at least one-half day before operating the arcs, to dry the unit out thoroughly. Be sure the Iield circuit is closed so that voltage is generated during this period.

ttIt is assumed that the Transverter has been installed high enough off the ground level to prevent it from being immersed in locations where a flash fiood could occur. However, should there be such a misfortune, the Transverter will not be unduly damaged and can readily be put back into service without having to remove it from the generator room. Of course, certain dismantling and cleaning will be necessaryeespecially with regard to the bearings. Contact the manufacturer for special instructions?

Naturally other generator manufacturers may have a slightly different form to their advice; but this Hertner schedule seems so' basically sound that. it very well could be followed on all.

The Speakers

Many operators remove all speakers and place them in dry storage, but experience of others has proven this is not necessary. Waterproof paper bags, made to the measurements of your own speakers can be obtained from theatre supply stores, These are simply slipped over the top of the speakers, gathered into the shape of the speaker post and secured with a stout cord. A few small holes should be punched in the under side of the bag with an ice-pick to relieve condensation.

THE VAN LLOYD METHOD of greasing locks, within a tobacco sack. may be seen at lett. top. Although covered with snow and ice, a slight pressure of the hands crumbles the ice. and when the sack is removed the lock may be opened with little difficulty. The second photo shows the interior oi the concession stand with all fixtures coated with vaseline and the counter covered with newspapers. The vaseline coated proiector is also shown, prior to being covered with a heavy tarpaulin. An incandescent lamp is left burning within the projector to insure warmth.

1948-49 Theatre Catalog, 7th Edition, Page 243