Two-Way Propellers Lessen Air Torque (Dec, 1941)
There have been a good number of aircraft that used contra-rotating propellers.
Two-Way Propellers Lessen Air Torque
THE latest development in airplane propellers, the product of English inventors, is called the Rotol Constant-Speed Contra-Rotating Airscrew, shown at the right. Although appearing to be a six-bladed propeller, the contrivance actually consists of two three-bladed propellers which rotate in opposite directions. Among the advantages claimed for the new type prop are complete elimination of torque and improved handling during aerial acrobatics.
OWNERS CO-OPERATE IN ELECTRIC CAR GARAGE (Sep, 1915)
Ninety seven years later and you’d be hard pressed to find a hundred electric cars in all of NYC.
Incidentally the $45 a month price would be equivalent to $1022 a month in 2012 dollars. While that sounds like a lot of money I’m sure you could find valet lots around central park that actually cost that much today.
OWNERS CO-OPERATE IN GARAGE
ELECTRIC car owners and dealers in the Central Park district of New-York City have banded together and built a co-operative garage. One hundred electric machines have been placed in the new station and six dealers in electrics and accessories have taken show room along the street frontage. As the result, the fortunate ones have reduced storage expenses considerably.
Safety and Beauty in Manchuria Governor’s Car (Oct, 1921)
There is a Facebook photo album about this car. Anyway, according to the caption the car did not prevent the Governor from being deposed by Chiang Kaishek and assassinated by the Japanese.
Safety and Beauty in Manchuria Governor’s Car
AN American limousine has just been delivered to His Excellency Tsan Tso-Lin, governor general of Manchuria. It combines luxurious upholstery and beauty of design with armored protection.
A lining of chrome nickel steel was built inside the body. Shutters of the same material, which are rolled out of sight in the roof of the car, can be lowered to cover the windows. Portholes in the sides and back of the car make it possible to fire from within.
DEADLY MONOXIDE GAS PIPED OUT OF GARAGE (Jul, 1934)
I wonder how many mechanics got carbon monoxide poisoning before these were standard…
DEADLY MONOXIDE GAS PIPED OUT OF GARAGE
Danger of carbon monoxide poisoning is eliminated in a New York City garage by a blower system with junction boxes at convenient points. To these boxes are attached lengths of flexible hose which are connected to the exhaust pipe of the automobile being tested or repaired. In this way the noxious fumes have no chance to escape into the workroom.