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1954-55 Theatre Catalog, 12th Edition, Page 326 (290)

1954-55 Theatre Catalog, 12th Edition
1954-55 Theatre Catalog
1954-55 Theatre Catalog, 12th Edition, Page 326
Page 326


1954-55 Theatre Catalog, 12th Edition, Page 326

Sizes Available

Drive-ins and large screen theatres have found the Lorraine Orlux 13.6mm by 22 inch new Grade 523 Positive, with the inner serrated shell, and Lorraine Orlux 7/16 by 9 inch Grade 557C Negative, as well as the Lorraine Orlux 13.6mm by 22 inch new Grade 583-08

Positive, with the inner serrated shell, and Lorraine Orlux 1/2 by 9 inch Grade 555CN Negative, to give an evenly distributed brilliant light on the screen, more intensely than was possible just ayear ago.

For the new high intensity, mirror reflecting type lamps, Lorraine Orlux Carbons have pioneered the development of newer and better 9mm by 20 inch Grade 552-09 Positives and 5/16 by 9 inch Grade 557C Negatives; 10mm by 20 inch Grade 552-09 Positives and 11/32 by 9 inch Grade 557C Negatives; and 11mm by 20 inch Grade 552-09 Positives and % by 9 inch Grade 557C Negatives.

All copper-coated Lorraine Orlux Carbons have been manufactured to give not only economical burning, but also to give increased light. This also is true with regard to CinemaScope and wide screen ratios of 1.75, 1.85 and 2 to 1.

AERIAL photograph oi the factory and warehouse of the Lorraine Carbons Co., Inc.. at their Pugny sur Mossele, France location. This is one of the

Many small theatres with 1 KW. operation found that their light was more than adequate for wide screen and CinemaScope application when Lorraine Orlux Carbons were used.

This timore light feature" has been found to be true with all of the new Lorraine Orlux Carbons.

Resetting Positive and

Negative Feed Controls

Assuming that most projection equipment in the theatre*such as lamps, generator, or rectifier-is operating at its proper rating for the size of the carbon to be used, Lorraine Orlux Carbons will take the following minor adjustments after a ttburning inn time of about two minutes.

Usually it is neceSSary to reduce the positive carbon feed control rheostat, and the negative feed control on the lamphouse. It may also be necessary to change the height control on the negative carbon holder in order to burn the positive carbon squarely, and in order to have a proper crater in the positive carbon.

Reasons for the foregoing adjustments are that the Lorraine Orlux Car bon burns slower, and if adjustments are not made, the carbon will creep forward and freeze, forming what is called a ttmushroomli on the negative carbon. It is important that the controls be turned slowly, and given sufficient time between each adjustment, to allow a new crater to be burned in the positive carbon. The projectionist, by watching the carbon visual crater card, can see the amount of creepage taking place on either the positive or negative carbon; and he can reduce or advance the controls accordingly, so that the positive and negative carbon will hold in their proper positions.

Unstable arc fiames, causing a great amount of flickering or sputtering, may be attributed to one of the following:

1. Loss of magnetism of the permanent magnets controlling the flame.

2. Improper draft. All exhaust ducts should be equipped with a good exhaust blower and a damper to each lamp, to control the amount of air exhausted.

3. Moisture. Carbons must be absolutely dry before using; otherwise sputtering will be experienced. Since all carbons absorb moisture, pre-dry carbons in the lamphouse, or on the rheostat before using.

storing-manufacturing sites where the new Super-Orlux carbons are made and housed. The finest 0! equipment is used to ensure perfect uniformity.

THEATRE CATALOG 1954-55
1954-55 Theatre Catalog, 12th Edition, Page 326