August, 2006 Monthly archive
Build A Diving Helmet from a Water Heater (Jan, 1932)

A Diving Helmet from a Water Heater

THEY go down to the sea in old water heaters along the Atlantic coast these days, now that some young man with a leaning toward aquatic sports has proved how easy it is to make an excellent diving helmet from a metal water heater which will enable its wearer to walk comfortably on the sea floor 35 feet and more below the surface. A few feet of garden hose, two pairs of bellows, a couple of valve boxes and a cylindrical metal boiler of the type used in most homes for heating water, are the essentials for building one of these helmets.

Dr. Ward’s Crystal Undulator (Mar, 1922)

Reduce Flesh, Do Your Own Massage
Dr. Ward’s Crystal Undulator

reduces fat deposits and gives a perfect figure from neck to ankles.

Specially adapted for deep abdominal massage, removing fat, correcting indigestion, constipation and sluggish liver.
Made to conform to the anatomical irregularities of the spine, the Undulator is the rational scientific instrument for treatment of neuritis, insomnia, nervous exhaustion, lumbago, sciatica, etc. Massage with the Undulator brings immediate relief to tired muscles, fatigue, stiffness and nerve irritation. Its adaptability for use over clothing is possessed by no other instrument—not even the hand.

Have Fun in a Boat But DON’T DROWN (Jun, 1950)

Have Fun in a Boat But DON’T DROWN

SWIMMIN’ time again, with a world of fun—and some serious hazards, too. As usual there’ll be tipped boats and other horseplay. G. E. Tatum, safety engineer for a public utility, offers common-sense advice on how to have fun and stay alive. In case your boat tips you overboard, Tatum says, rock it to slosh out as much water as possible, then crawl over the stern

Breakable Hans Helps Air Force (May, 1952)

Breakable Hans Helps Air Force
Fractures of Hans’ “almost human” bones are expected to save Air Force pilots from similar injuries. Built around a metal, rubber, nylon and ball-joint spinal column, Hans is a dummy the Research and Development Command made to simulate the human body in a series of drop, crash impact, deceleration and acceleration tests. Through a cylinder and sleeve arrangement his arms and legs rotate exactly like a man’s. He has the measurements of a muscular 200-pounder. The dummy’s metal and plastic collarbones, the most easily fractured bones in humans, will snap just as would a man’s, and his vinyl-foam “skin” will show the effects of cuts or abrasions. Following each test the bones can be studied or replaced through zippered openings in the skin.

Tiny Six Shot Camera (Feb, 1949)

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Globe for Globe-Trotters Folds Like an Umbrella (May, 1939)

Globe for Globe-Trotters Folds Like an Umbrella
Geographical globes of the world which can be collapsed like umbrellas are an English novelty gaining in popularity among boat travelers on round-the-world cruises. In their collapsed form, the globes take up no more space than ordinary umbrellas, making them easy to carry or to stow away in steamship cabins. When a ring on the handle is pushed upward, flexible ribs bend outward to shape the fabric on which the map is printed.

Tests Made with Living Heart in Air-Tight Chamber (May, 1938)

Tests Made with Living Heart in Air-Tight Chamber
BY KEEPING the heart and lungs of a dog alive in an air-tight chamber, Dr. Maurice Visscher of the University of Minnesota recently demonstrated a startling new way to perform physiological experiments. Oxygen tubes kept the organs functioning normally while he injected drugs directly into the blood stream of the heart to study their effect. Meanwhile, delicate thermostats maintained a constant temperature within the outer water-filled tank, preventing variations that would affect the experiment or cause the “death” of the transplanted organs.

Mine Detector Diagnoses Cows (Sep, 1950)

Mine Detector Diagnoses Cows
The man in the white coat above doesn’t think that Bossy has a Tellermine in her cud, but he is checking to see if she’s munched a nail, screw, or bit of barbed wire. Because cows sometimes eat metal objects that cause sickness, British vets use mine detectors along with their stethoscopes. Other uses for surplus detectors are to locate metal embedded in logs that might shatter saw blades, and to spot the hairpins that women workers tend to shed into food-package assembly lines.

Build a Basement Golf Course (Jun, 1950)


By Allan Carpenter

POPULARITY of miniature golf has brought the game right into the basement in the form of a knockdown course that can be picked up and stored away almost as easily as you would a game of croquet. It’s an exciting game the whole family can enjoy the year round—from the youngsters on up to the avid golfer who will find it good practice in keeping his putting eye keen. Standard putters and irons are used and scoring is done as in real golf, penalties being counted as strokes. As for space, most basements, especially those with compact heating units, will accommodate the “concentrated” nine-hole course pictured in the illustration above, but, where there’s only a minimum of space, a lot of fun can be had from a much smaller course. As each green is complete in itself and lightweight, the course can be quickly set up. Most of the greens are fairly shallow to permit stacking them in little space when not in use. Where yard area is sufficient to permit an outdoor course, a suggested layout for an 18-hole one is given in the plan view on page 197. Construction of nine additional greens is given to supplement the nine shown above.

Night-Driving Glasses Use Wire-Mesh Lenses (Nov, 1940)

Night-Driving Glasses Use Wire-Mesh Lenses
“Blinders” of wire mesh in new spectacles designed for night driving are said to shield the eyes from the glaring headlights of oncoming cars. Mounted in an eyeglass frame, the screening absorbs enough light to prevent retinal fatigue, without interfering with safe vision.