The safety valve on the boiler is also very simple; it controls the steam pressure, allowing it to escape when it becomes too great.
The wood or cold handle sad iron is exceedingly simple and astonishingly profitable.
The Morse alphabet, used in telegraphing, was rather on the puzzle order, and quite easy at that.
Argand had gotten up his lamp with a circular wick, in a tube, the air thus supplying oxygen from within and without. It was a success; his child brother playfully set a broken flask over the flame, which was greatly improved thereby. The practical eye of the elder Argand enabled him to note the birth of lamp chimneys.
The four wire prongs to hold chimneys on lamps were crude, simple, and very profitable.
A good fender for trolley cars should be made so that it could be projected in front of the car, or drawn in within the line of the car, bow-shaped in front and governed by springs, so that it would yield when striking a person.
A mechanism might be arranged to show the next station or street on a sign in the car. It could be operated by power taken from the axle, though the slipping of the wheels would be bothersome.
The flying machine is a little too much of a wild fancy for me; it would do for some fellow who wants to get off the earth. "It's me for the simple life."
Men chew their cigars so much in smoking; it don't look a bit neat; an oiled paper end might be worked on under the wrapper to help the matter.
For cheap, machine made cigars, a toothpick might be worked in, to be pulled out before lighting, to improve the draft.