ELECTRONIC FOOD ANALYZER chocks ripeness of fruit vegetables, eliminates bad selections. R. Reece. S. Pasadena, Calif.

PLASTIC COVERED bathtub for little monsters who like to splash. Prevents bathroom flooding. Jack Kruse, Unionville. Conn.

METAL SPIKES on rubber tires which would slip over lawnmower’s wheels, aerate lawn while mowing. Michael Fey, New York, N. Y.

PAINT PILL which brush wielder would merely drop into thinner to produce desired hues. Victor Ashford, Garden Grove, Calif.

LUMINOUS SMOKE that sky writers could use to spell out night messages, produce eyecatching ads. F. H. Kraus, San Antonio, Tex.

Is there a gadget you think should be invented? If so, send its description to Inventions Wanted Editor, MECHANIX ILLUSTRATED. 67 West 44 St., N.Y. 36. N.Y. Each one printed will be awarded $5.

  1. Rick s. says: January 10, 201211:58 am

    Those old lawnmowers were hard enough for me to push around without spikes in the wheels. The added friction of those spikes penetrating and then pulling out of the ground would have made lawn mowing a much harder chore than it was. Obviously the guy with the idea must never have tried it.


  2. Kosher Ham says: January 10, 20122:16 pm

    Luminous smoke?

    Sounds like a type of firework to me.

    I.E., flares.

  3. Sean says: January 10, 20128:38 pm

    Might not be bad to have those spikes. Mine always slipped on grass that was the slightest bit damp.

  4. hobbit says: January 10, 201211:57 pm

    @Hirudinea or glow in the dark powder.

  5. PoppyJoe says: January 11, 20121:30 pm

    Re: spikes for the mower – I read somewhere, and actually tried, wearing golf shoes to aerate the soil while mowing and doing yard work. I have no idea if it worked, but it seemed like a good idea at the time

  6. Mike says: January 11, 20128:13 pm

    Hirudinea , there are vents at the top… but those could be there to hear the child scream.

  7. Gary James says: January 12, 20128:03 pm

    As for fruits, there are is some sort of indicator chemical which changes color in the presence of Ethan gas, which some ripe fruit emits. A small card with the chemical printed on it is packaged with some fruit.

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