Motion Picture Herald (Jul-Aug 1936)

86 MOTION PICTURE HERALD July 2 5, 19 3 6 THE BLUEBOOK SCHOOL (Continued from preceding page) be steady, its strength depending upon the numbers of negatrons reaching the anode. This latter in turn depends upon the number of negatrons emitted by the cathode and the voltage supplying the anode with its positive charge. "The grid, which is located between anode and cathode, is also connected to a pure d. c. power source, but with negative to grid and positive to cathode, thus supplying what is termed the grid or 'C bias. Grid and cathode form a condenser through which the grid circuit is completed. "Now when the negatrons seek to pass from cathode to anode they encounter the negatively charged grid and are repelled, some of them being forced back and prevented from passing. The stronger the grid charge, the greater the repulsion, which action, it is obvious, operates to change the plate current exactly in proportion as the grid charge is changed. Actually a very small change in grid charge controls a relatively large number of negatrons, and it is this valve-like action that gives the tube its amplifying power. "By connecting a source of sound current in series with the grid circuit, the grid bias or charge is altered in response to the frequency and strength of the sound current, which fluctuation causes a corresponding change in the much stronger plate current, thus superimposing on the steady plate current an a. c. component which is a powerful duplicate of the weaker original sound current supplied to the grid." A. L. Cooper says : "The three-element amplifying tube consists of a cathode and an anode placed in a vacuum tube, and a control grid so located between them that negatrons emitted by the cathode must pass through it to reach the anode. One wire (the positive) of the plate circuit is connected to the anode ; the other to the anode. "The grid circuit has two wires, one of which (the negative) connects to the grid, the other to the cathode, so that the grid and anode form, in effect, a small condenser. The grid is always kept negative with respect to the cathode, so that negatrons cannot contact the grid and short circuit the grid-cathode capitance. The two sources of power in the grid circuit are connected in series. One is the sound current to be 'amplified,' which may be from the secondary of a transformer. The other is plain d. c, with negative connected to grid and positive, as aforesaid, to cathode. This is called the grid or 'C bias. It keeps the condenser always charged with cathode positive and grid negative, while the sound source in series varies the strength of the charge as its own frequency and strength to the cathode. Each fluctuation, no matter how slight, in the grid charge is instantly duplicated by a corresponding change in the much stronger plate current, making an a. c. ripple that exactly matches every fluctuation in the grid voltage that created it. The plate current ripple thus produced is therefore an amplified duplicate of the grid ripple." There, gentlemen. You wanted the chance to know how different ones understood things, and here you have an example. (B) W. C. Brown says: "Projection room ventilation serves mainly to provide conditions wherein men may remain for several hours without fear of injury to health, and to remove all gasses and smoke as fast as formed in case of fire. Ventilation serves other things of value, but the two named are the essential factors. Men cannot do their best work in poorly ventilated quarters, therefore since box office income depends, in some measure, at least, upon good work by the projectionist, it is to the financial interest of the em ployer to provide it. Moreover, did a fire occur in a poorly ventilated room, smoke in all probability would ooze out into the auditorium around crevices in the various shutter-covered openings, sight of which might well cause a panic, with possibly very serious results. "We then may say that good ventilation is a safeguard to both life and health." A. Garlock answers thus : "The essential items served by proper projection room ventilation are: (a) To provide good air, thus conserving the health of the men working in the room, as well as setting up a condition tending to cause them to produce good work, (b) Proper ventilation is a decided safeguard in case of fire; see your Bluebook. (c) A proper flow of air tends to cause equipments to operate at lower temperature, (d) Proper air movement tends to carry off carbon and other dust which, The following new companies in the motion picture field have been incorporated recently in the localities named: In Arkansas: Ozark Enterprises, Inc., to operate theatres, By W. F. Sonneman, E. H. Sonneman, M. A. Lightman and M. S. McCord. Capital stock is 1,000 shares, no par. Payne Amusement Company, Inc., by E. C. Payne, Leila Pyane and Hal DeLongy. V At Dover, Del.: Fox Southside Theatres Corporation, to operate theatres, listing a capital of $1,000. Incorporators are Orville H. Schell, Jr., Charles G. Tillinghurst, Jr., and H. D. Johnson. New Cozy Theatre Company, Inc., with capital stock of 1,000 shares, no par value, by S. L. Mackey, J. Skrivan and H. Kennedy. V In Florida: Myrna Halifax Theatres, Inc., with capital of 10 shares, par value $100 each, by E. J. Sparks, M. C. Talley and L. H. Small. Pan American Pictures Corporation with capital stock of 400,000 shares, no par value, as producers, by A. L. Brown, G. H. Bowles and C. D. Benson. Perland Company, Inc., to engage in the motion picture business, by F. Rogers, F. H. Kent and G. A. Kenimer, Authorized capital is 100 shares at par value of $100 each. Royal Theatre Enterprises, Inc., to operate theatres under an authorized capitalization of 100 shares, no par value, bv J. A. Cunningham, D. Scott and C. L. Perry. Veebee Theatres, Inc., bv R. N. Kahlevard. Sr., R. N. Kahlevard, Jr. and M. C. Talley, with capital stock of 10 shares, par value $100 each. V In Missouri: Fanchon and Marco Enterprises, Inc., to carry on general theatre and amusement business, by Harry Greenman, Charles E. Kurtzman and Rose Wiptler. V At Albany, N. Y.: Harley Enterprises Ltd., theatrical business, with a capital of 100 shares, no par value. did it lodge on film or in machinery bearings, would cause serious harm." G. E. Doe holds this view : "Without good ventilation during hot weather, at least, the projection room is a hot, uncomfortable place in which to work, to say nothing of health considerations. Men forced to work under such conditions will not do their best, hence the box office will suffer. Accidents are more likely to happen in such a room. Equipments will not receive the care they might and should have, therefore the repair and replacement bills will be higher than they would be were better working conditions provided. I am not defending poor work, even when the employer 'asks for it.' I am only telling you, or rather him, what will happen. "In addition to all this, with poor ventilation the air will be more dust laden, with consequent injury to film and machinery bearings and the greater liability of ground noise in sound, and to top it all off, when or if a fire occurs in a poorly ventilated room, almost certainly at least, some of the smoke will get out into the auditorium, where it may start a panic. To sum up, good health, comfortable working quarters, clean air and protection from possible panic in time of fire are the essential points." by Solomon Badesch, Esther Schutz, Nathan Berman. Ionian Theatre Corporation, to operate theatres. Capital stock is 100 shares, no par value, by John Skouras, James Marcus, Euthermios Coolis. Lake Placid Players, Inc., for theatrical productions by Elizabeth W. Stearns, Marion Rooney, Edith B. Stearns. V At Charlotte, N. C: Standard Theatres, Inc., with authorized capital stock of $100,000 and subscribed stock of $300, to own and operate motion picture theatres, by F. H. Beddingfield, J. M. Gregg and S. W. Craver. V In Ohio: Cheviot Theatre Realty Company, Inc., by Dorothea Gano Loofbourow, J. E. Crawford and John R. Loofbourow, with capital' stock of 250 shares, no par value. Creation Amusement Inc., by N. R. Simon, J. M. Barbour and G. W. Rosenberg. Fairfield Amusement Company, Inc., by Robert Dienst, A. B. Miller and A. F. Miller, Valley Amusement Company, Inc., with authorized capital stock of $10,000 by David M. Levy, Alfred H. Myers and M. H. Koodish. V In Rhode Island: Columbia Amusement Corporation, an exhibitor company, by William J. Carlos, Marshall B. Marcus and Irving Winograd. V Rockport Amusement Company, Inc., capitalized at $2,000, by A. C. Glass, Charles T. Picton and Fred Johnson. V In Virginia: Brink Amusement Corporation, with capital of $10,000, to engage in a general entertainment business. James H. Brink of Covington, Ky., is president. T. & P. Company, Inc., of which B. T. Pitts is president, has been granted a charter to a theatrical business under capital of $50,000. Virginia Theatre Supply Corporation, with maximum capital of $5,000, to manufacture and deal in theatre supplies. IT. Pollard Long is president. COMPANIES INCORPORATED