389. The Extension Bicycle.—A wheel which may be made as convenience requires into a tandem or single wheel by addition or removal of parts would be in great demand.
390. A Bicycle Shoe.—A sole adapted to be attached to an ordinary shoe, and with means for retaining a hold on the pedals.
391. The Stirrup Pedal.—A pedal which is shaped like a stirrup, holding the foot and doing away with toe-clips.
392. The Home Bicycle.—The use of the bicycle in certain hours every day has become indispensable to the health of thousands, but there are many rainy and inclement days as well as weeks and months in the winter when it cannot be used. Invent a home bicycle by means of which one can have all the exercise of the ordinary wheel in all kinds of weather.
Section 2. Money in Building Contrivances.
393. The Ornamental Floor.—Ornamental floors, for ballrooms, summer hotels, and all rooms where carpets are not indispensable.
394. The Secure Window Blind.—The present appliances for holding back the window blind permit it to shake to and fro, giving unpleasant noises in the night. There is needed a device that will hold it securely in place.
395. The Self-Locking Window.—Doors are made self-locking; why not windows? Who will invent a means by which the shutting of a window at the same time locks it?
396. The Adjustable Blind.—A mechanism by which a blind or shutter can be worked from within. A toothed wheel with crank inside the window, and a connection by an iron rod with the shutter whereby the blind or shutter can be held wide open, can be closed, or held in any position whatever, by simply turning a crank.
397. The Dollar Door Closer.—The automatic door closer made the inventor rich, but it is expensive; we want a door closer that can be fastened to every door and sold as low as $1.