The Educational screen (c1922-c1956])
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BELL & HOWELL .. coi^'"-*^* „ The new two-case Filmosound 138, for both silent and sound film projection, offers the complete film protection of all Bell & Howells. Especially quiet, due to the sound-proofed blimp case in which the projector mechanism operates, Filmosound i 38 is ideal for classroom or small auditorium operation. Other models for larKer audience requirements • Better pictures result from scratch-free films that are kept so by the complete film _„ protection which is characteristic of all Bell & Howell projectors, sound and silent. ^^ Film protection is an especially important consideration for schools which have any film library of their own, for these films will be quickly injured and soon destroyed unless they are used only on projectors that are designed to protect the film. Complete film protection is obtained in Bell & Howell Projectors by such superior desifcn features—most of them exclusive—as the following: 1. FLOATING FILM—The sound and picture record areas do not touch any stationary part of the pro- jector mechanism, so that even the softest film cannot be scratched. 2. JERKING OF FILM IS ELIMINATED—Harmonic cam moves film at aperture with correct steady accel- eration without "clawing" or jerking. 3. "SAWING" ACTION IS AVOIDED —Shuttle teeth move in a rectangular path and parallel to the film; perforation wear is reduced to a minimum. 4. ACCURATE TEETH —Shuttle teeth and sprocket teeth are accurately machined to distribute pres- sure over the full edge of the perforation. 5. STRAIGHT LINE FILM TRAVEL—Film is not twisted at any point. All film-carrying parts are perfectly aligned. Twisting film opens splices, causes tearing. 6. AUTOMATIC SNUBBER—Bent take-up reel or acci- dental stopping of reel will not cause film injury. A spring snubber on 1600-foot reel models auto- matically compensates—absorbs shocks. 7. SELF-MONITORED REWIND — £>amage from care- less rewinding is avoided by correct automatic tension on reel spindles. 8. ROTATING SOUND DRUM-Rotating ball-bearing sound drum (on sound models) prevents perfora- tion strain and scratching liable to result from stationary sound drums. For complete information about Bell & Howell projectors—information on how they qualify in all requirements of perfect projection as they do in complete film protection—mail the coupon below. Bell & Howell Company, Chicago, New York. Hollywood, London. Estahlished 1907. THE BASIC REQUIREMENTS OF PERFECT PROJECTION 1* Rock-steady pictures, free from jump and weave (see our steadiness test). 2. Brilliant, uniformly illuminated pic- tures. 3. Flickerless pictures, eliminating eye- strain. 4. Simple, errorproof operation. 5. A long life of constant dependability. 6. Ease of maintenance . . . simplicity of oiling, cleaning, replacing lamps. 7. Complete film protection. ane/ also, in sound film projectors — 8. Clear, crisp speech reproduction. 9- Pleasant, natural musical quality. The advertisements of this series tell how Bell & Howell Projectors meet these re- quirements. ALL-COLOR CHRISTMAS SOUND FILM RELEASE. "The-Toy Shop'—A one-reel, 16 mm. sound film in natural color—printed from Technicolor negative—that depicts a toy shop in a French Village on Christmas Eve. The toys "come to fife," unfolding a delightfully gay and entertaining film story. Rental, S2.50. Out- right purchase. S50. • TWO-REEL ATHLETIC FEATURE. "Mechanics 0/ Springboard Diving:'—A 16 mm. film in two reels by "Dutch" Smith. Olympic champion. Reel i—One-Metre Board; Reel 2—Three-Metre Board. These films are silent, fully titled. Rental $1 per reel per day: purchase, $50 per reel. The One-Metre Board teaching film is also available in sound with verbal instruction by Mr. Smith. Rental, $1.50 per day; purchase price, $36. BELL & HOWELL COMPANY es 12-37 1817 Larchmont Avenue, Chicago, Illinois Please send me full information on ( ) Filmo- sound Projectors, ( ) Silent Filmo Projectors, ( ) Bell & Howell Payment Plans, < ) Silent films for school use, ( ) Sound films for school use. Name Address City State BELL & HOWELL