Viewing page 5 of 12

This transcription has been completed. Contact us with corrections.

TELEPHONE, CORTLAND 7285     

COPY.

WILLIAM J. HAMMER
CONSULTING ELECTRICAL ENGINEER
55 LIBERTY STREET
NEW YORK CITY
SUITE 2510

CABLE ADDRESS: "REMMAH, NEW YORK"

Jan. 26 1911.

Mr. J. W. See, 
Hamilton, Ohio.

Dear Mr. See,

A machine as described in the patent may be steered as follows; to start a turn to the left, th operator moves the cradle to the left thus decreasing the angle of the wing on that side and turning the vertical tail toward that side.  The first effect of this is to tilt the machine without turning it toward either side since the tail and wings balance each other about a vertical axis, but the machine soon begins to slide toward the lower wing, thus bringing an additional pressure to bear on the tail,which causes the whole machine to turn on its vertical axis.

The amount of this additional resistance on the tail can be increased or decreased by making the machine slide faster or slower, much may be done by regulating the warp of the wings.

A strong movement of the cradle to the right throws the pressure on the opposite side of the tail, reverses the wing warping, and brings the machine back to a level and into a straight course again.

After a curved course has been established in the manner described above, a curious phenomenon results from the fact that the slower speed of the inside wing greatly reduces the lifting power with respect to the outside wing, so that in order to prevent the machine from tilting too steeply and falling it is necessary to reverse the warp until the inner wing has the larger angles of incidence, under this condition the machine is kept from turning by the greater resistance of the inside wing as compared with the outside wing.

The machine therefore circles with some pressures on the outer side of the tail, just contrary to the conditions of ships' rudder.  The amount of pressure on the tail is regulated by increasing or decreasing the tilt of the machine, which in turn increases or decreases, the sliding movement of the machine and determines the resulting pressure on the tail.

Thus the quickness of the turn can be regulated or the machine brought out of the circle and on to a level keel solely by suitable movement of the cradle.

The relations of the effects of the movements of

Transcription Notes:
no need to say preprinted or underlined