Inventions New and Interesting (Nov, 1928)

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Inventions New and Interesting

This new fan-shaped rake has prongs of tempered, flexible steel that are rigid enough for raking and springy enough for sweeping. Grass is not torn up from the lawn and leaves do not clog the steel prongs.—Master Mfg. Co., 138 Davis Ave., Dayton, Ohio.

One of a number of styles of cabinets, utilizing Frigidaire, which have been designed to cool bottled water in offices and factories. The compact cooling unit is in the lower part of the cabinet.—The Charles E. Hires Co., 206 South 2kih St., Philadelphia, Penna.

For use in mining or single shot blasting. Forcing the plug into the unit which looks like a flashlight, fires the shot. It contains three flashlight unit cells.—National Carbon Co., Inc., New York and San Francisco.

Steam, generated by an enclosed gas burner, penetrates and softens the paper. The outfit is portable and may be rapidly operated by one man.—The Warner Mfg. Co., 529 S. Seventh St., Minneapolis, Minn.

The powerful leverage of this cutter enables the workman to “nibble” off bites from the most difficult curves. With it, a few swift strokes will cut a template that otherwise would require laborious, uncertain drilling and much filing.— National Machine Tool Co., 1536 Clark St., Racine, Wis.

The automobile jack shown in the two illustrations above is also a stabilizer since it “damps” the rebound when the car hits an obstruction in the road. Coming in sets of four, these new jacks are permanently attached to the car.

Each weighs eight and three quarters pounds and is attached to the spring between the axle and the end. In case of a puncture, the car may be raised quickly with a speed-wrench.—Kant Fall Manufacturing Co., Sturgis, Michigan

The light from an approaching automobile warns its occupant when, on striking this device, it is reflected strongly. It uses no light of its own, but works on the simple principle of internal refraction.—Catseye Reflecting Devices, Inc., Philadelphia, Pa.

With this unique device, the regular ash can used by homes and large buildings, is placed on the elevator and lowered by a hand crank into the pit under the heater. The ashes are deposited by gravity in the can, ready for removal.—The Ash Uplifter Co., Miller Building, Scranton, Penna.

Pencil leads of four different colors, any one of which is ready for instant use, make this pencil valuable for checking work. The two ends telescope together. In order to write, the two parts are drawn apart slightly and turned until the proper color shows. When pushed together again, that color lead projects.—Educational Exhibition Company, Providence, R.I.

This three-tier tray facilitates the serving of light meals in the room of a club or hotel guest. The shelves, held together by a handle, hold food and all the dishes necessary. Its white cover also serves as a small table cloth.— Servidor Company, 101 Park Ave., New York

The direction and velocity of wind foretells the weather. Above is shown the indicator which is installed far below the roof on which the instruments at the right are installed. The vane swings with the wind and a light flashes behind the proper letter on the indicator dial. In the center of the dial is a light which flashes the number of times a minute to correspond to the miles-per-hour wind speed shown by the anemometer.—Charles E. Lord, 24 Milk St., Boston, Mass

Many uses will be found for this convenient lamp which gives light where it is most needed but leaves both hands free.—Digit Mfg. Company, 272 Lafayette St., New York

  1. Hirudinea says: December 11, 20125:05 pm

    That lawn rake was a new invention? I thought they have been around forever.

  2. Stephen says: December 12, 20125:22 am

    The water cooler and wallpaper steamer are also sound ideas that remain in use, though the latter is more likely to be electrically powered. However, the idea of a blasting cap which is triggered by pushing a plug into it sounds like a good way to lose a hand. I think the journalist must have misunderstood.

  3. DrewE says: December 12, 201211:58 am

    @Stephen — I think the blasting cap was electrically activated at some distance by long wires, the flashlight thingy and the operator being (more or less) safely far away. It’s not that different from the usual practice today, and would probably have been safer and more reliable than burning fuses. The biggest problems I can see with this design are the rather crude means of operating (rather than using a pushbutton switch or similar), and the lack of a preventative for accidental discharge due to a static electric spark. (The wire leads should be shorted together until just before firing to avoid this.)

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