“These Theories on Automatic Feedback Control are Interesting…but…
When can I use them in my plant?”
The answer is: Plans can be started just as quickly as you can phone us or write us.
Here at Ultrasonic is a skilled staff already trained in diverse applications of automatic control â€”
. . . with many years of actual experience in using digital and analog feedback control on machine tools and process industry equipment.
If this issue of Scientific American stimulates your thinking … if it makes you want to get the benefits of an early start in this new field for your company . . . then, get in touch with us. Ultrasonic Corporation, 61 Rogers Street, Cambridge, Massachusetts.
CAMBRIDGE 42 MASS.
AUTOMATIC FEEDBACK CONTROL DEVELOPMENT, EVALUATION AND EQUIPMENT
Autogiro Blades Form Screen for Floating Ads After Dark
DISPLAY advertising at night by means of a magic lantern suspended beneath an autogiro, with the rotating blades serving as a screen, is a German inventor’s latest medium for placing a product before the public eye.
The magic lantern assembly is placed in a torpedo shaped carriage equipped with vertical and horizontal rudders to keep it in perfect alignment with the autogiro flying above. It can be raised or lowered by means of a cable, for focusing the advertiser’s message on the blades. When landing, the projector is drawn up into the fuselage.
To insure perfect reproduction of the advertisement, the under sides of the rotor blades are specially treated. The autogiro has been found to be particularly adapted for this type of aerial advertising because of its ability to hover almost motionless in the air, while the blades revolve fast enough to form an uninterrupted screen.
Clock Wakes Sleeper with Music
THE violent hatred which humanity has for alarm clocks, especially around the hours of daybreak, may be mitigated somewhat by the invention of a combination phonograph and clock which awakens a sleeper with the strains of music from his favorite orchestra or singer.
Both phonograph and clock motor is contained in a box the size of a large camera, and the hour for the morning serenade is set by knob as in an alarm clock. When out of use the case is folded up to make a neat and attractive table or mantel ornament.
Nix on Parties – with my crop of Pimples
Don’t let Adolescent Pimples kill YOUR dates!
AFTER the beginning of adolescenceâ€”from about 13 to 25, or even longerâ€”important glands develop and final growth takes place. This causes disturbances throughout the body. The skin becomes oversensitive. Waste poisons in the blood irritate this sensitive skin, causing pimples.
Fleischmann’s Yeast clears the skin irritants out of your blood. Then pimples disappear! Eat 3 cakes a day, before ealsâ€”plain, or in a little waterâ€”until your skin clears.
Clears the skin by clearing skin irritants out of the blood
OIL – Modern WAR GOD Threatens the World
Black gold, precious underground liquid, is food for the modern war machine. Deprived of it, a nation’s military campaign is threatened with failure. Will oil become an instrument to enforce peace or to cause war?
WITHIN the last few decades, oil has changed from an almost unknown and unnecessary commodity to one of the world’s most vitally needed materials. Oil, unlike nitroglycerin, has always been an innocent, viscous fluid used for lubrication and fuel. But harmless petroleum, like Dr. Jekyll, has undergone a startling transformation. Oil may yet be the means whereby the flaming torch of war is carried across the world.
“Lunch Wagon” For White House
A LUNCH wagon de luxe, encased in glittering metal and rolled upon balloon tired wheels, has been placed at the disposal of President Roosevelt. When the Chief Executive finds himself too busy to take time off for lunch, the lunch wagon is pushed in, and he is served a piping hot meal.
Harness Prevents Running Escape
A HANDCUFF harness which prevents a prisoner from running away has been devised by Guy E. Lombard, Portland, Maine jailer. The harness consists of a steel ring held to the prisoners’ waist by a stout leather belt. The handcuffs are fastened to the belt, holding the prisoner’s hands so close to his body that he cannot gain balance to run.
HILL HOPPING A WORM DRIVE SLED
FROM California comes a radical innovation in motor driven vehicles, a worm drive ski-sled. Powered by a 35 horsepower engine, it negotiates the steepest, roughest inclines with ease, and on level snowfields has attained speeds of twenty and more miles per hour.
With a more powerful motor, considerably higher speeds are expected, and the initial success of the experimental model may lead
to an entirely new sport in the form of motor ski racing and jumping. In order to achieve the latter sport, it will be necessary to mount the runners on shock struts, both to protect the worm-drive blades and the rider. This would be a simple matter.
More practical vistas opened by this novel sled lie in its adaption to the needs of Arctic exploration parties in their long treks over snowbound wastes.
New Plastic Masks Replace Sculpturing
AS FAST as photography and almost as simple is a new process for making more accurate reproductions of head and bust than a sculptor can. Casts of heads can be made at low cost in 35 minutes.
A new type of plastic material, invented by Miss Harriet Meyer, is the secret of the process. This plastic substance, with which she covers the entire head of the subject, accurately reproduces every strand of hair and minute line. Yet the material does not stick to the subject. No oil is put on the face. The subject can assume any expression he may wish to have reproduced. The plastic material is applied with a brush and a brass cage pressed in place. The mask is then dried with an electric blower. After drying, the mask, still flexible, is removed. It is then used to produce the finished head in plaster of Paris or bronze.
It is claimed the plastic material does not cause discomfort to the subject and no tubes are necessary to permit the subject to breathe easily.
The New Gillette Shave
Easier and safer to handle
MOST MEN like fishingâ€”but not fishing down the drainpipe for a slippery razor blade. That’s one of many reasons why a vast army of men are praising the New Gillette Blade. Its square ends can’t slip out of soapy fingers; and how easily the new blade reaches into the tight little corners around the mouth, nose and ears!
There are so many other big improvements that you won’t appreciate them all until you try this New Gillette Shave yourself. Here are just a few: no more wiping or drying of parts. New blade resists rust.
“Razor pull” is banished forever by new reinforced corners of razor cap and cut-out corners of blade-Sounds almost impossible to give you all this remarkable new shaving comfort for only one dollar, doesn’t it? Yet your dealer has your New-Gillette Razor set waiting for youâ€” your choice, in fact, of five styles of handsome cases. Additional new blades are priced at one dollar for ten and fifty cents for five.
Enjoy this new shaving thrill tomorrow morning by seeing your dealer on your way home tonight.
GILLETTE SAFETY RAZOR CO., BOSTON, U.S.A.