��Popular Sclnirc Montlili/
���Driving spikes in railroad ties is accomplished with socket-wrenches run by motor
Driving Railway Spikes with a Motor- Car
THE latest thing in spike-driving apparatus for railroad use consists of an ordinary motor-truck mounted on railway car wheels. Attached to the
��engine-shaft is a generator
which operates five motor
tools for fastening the rail
to the ties with wooden
screws. Three of the tools
are attached to wood-boring
bits and two to sf)cket-
wrenches for screwing down
the spikes. All five tools are
operated at the same time.
The car has a capacity
for about five hundred and
fifty spikes an hour and one
thousand feet of cable are
provided so that the crew of
five men, three with the
wood-boring motors and two
with the screwing-machines, may work
on two thousand feet of track without
moving the car from its original position.
Should a train come along, the car can
be shifted to one side by means of a
portable turntable quickh' operated.
��Portable Electric Tire-Inflator
AUTOMOBILE tire manufacturers always impress on their customers the necessity of inflating tires to the proper pressure. If this precaution is neglec- ted, the tire walls deflect more than they should, and the plies of which the tire carcass is composed tend to separate. This produces a weakening of the shoe and greatly diminishes the life of the tire; a blow-out i- under these conditions.
There is no excuse for this neglect i the motorist is provided with tiy compact air-compressor outfit shown in accompanying photograph. In the de- vice an electric motor ami pump are combined in such small compass as to be readily handled. The device weighs but thirteen i)()unds and can be plugged into any light-socket where the potential is one huiidri'd and ten volts, the almost universal iigiil ing current. The current may be either alti-rnating or direct.
This small outfit furnishes only coi clean air. It will pumj) up to one hun- dred pounds per sfjuare inch pressure, wliiih is sufficienl for ordinarv use.
��Sufficient hose is pro- vided to make quick connections with any light -socket at hand
���Attach the air-compressor, which weighs only
thirteen pounds, to an ordinary liglit socket
and inflate your tires in a few minutes