In the construction of a rifle for sporting or target work
there are several conditions to be met. In the first place the
rifle must be made to balance easily.at all times, whether the magazine
is full of loaded cartridges or is empty. In all cases the
barrel of the...
Samples of insulating materials used in the construction
of electrical machinery and apparatus are
tested for dielectric strength before such are accepted
for use. This is done by applying to the sample a
high voltage until it is pierced through by the electric
spark. This is a parallel case to...
In designing a machine of any kind, considerations
must be made regarding the kind and amount of work
it will be required to do, the foundation for its support,
and the amount of space available for its occupancy.
An engine which is to be used for driving an automobile
must...
By an appropriation of the Oregon Legislature of it becomes possible for the Oregon Agricultural College to build a drill shed, a thing long needed by this institution. Dennis, Hendricks and Tobey, architects of Portland, submitted plans for this drill shed and in designing the truss for this building we...
Electromagnetic engines, or motors, are machines in which the motive power is derived from electric currents by means of their electromagnetic action. The following design is for a 1½ K.W. bi-polar motor.