Diagram showing air gaps between parts of Gray & Davis apparatus.

Air Gaps

Diagram showing air gaps between parts of Gray & Davis apparatus.

Portrait of Jefferson Davis.

Jefferson Davis

Portrait of Jefferson Davis.

Jefferson Davis, a senator from Mississippi who was elected president of the Confederate States of America. , US Senator from Mississippi.

Jefferson Davis

Jefferson Davis, a senator from Mississippi who was elected president of the Confederate States of America.…

Delco starting and lighting installation on the Davis, models 6-H, 6-I, and 6-K.

Delco

Delco starting and lighting installation on the Davis, models 6-H, 6-I, and 6-K.

Delco starting and lighting installation on the Davis, models 6-J.

Delco

Delco starting and lighting installation on the Davis, models 6-J.

Section of Gray and Davis Lighting Dynamo.

Dynamo

Section of Gray and Davis Lighting Dynamo.

Gray & Davis starting and lighting installation on the Chandler 1917 light-weight six.

Gray and Davis

Gray & Davis starting and lighting installation on the Chandler 1917 light-weight six.

Gray & Davis starting and lighting installation on the Chandler 1917 light-weight six.

Gray and Davis

Gray & Davis starting and lighting installation on the Chandler 1917 light-weight six.

Diagram of layout for testing Gray & Davis generator.

Gray and Davis

Diagram of layout for testing Gray & Davis generator.

Wiring diagram for Gray & Davis dynamo and regulator.

Gray and Davis

Wiring diagram for Gray & Davis dynamo and regulator.

A section of Gray & Davis generator for silent-chain drive.

Gray and Davis Generator

A section of Gray & Davis generator for silent-chain drive.

Section of Gray & Davis generator with ignition distributor gearing (shaft drive).

Gray and Davis Generator

Section of Gray & Davis generator with ignition distributor gearing (shaft drive).

Gray & Davis starting motor with reduction gearing for open flywheel. 1-Motor Pinion; 2-Intermediate Gear; 5-Intermediate Shaft; 6-Sliding Pinion; 7-Shifter Fork; 8-Shifter Rod; 10-Clevis; 12-Switch Rod; 23, 24, and 25-Oilers; 26-Oil Plug.

Gray and Davis Motor

Gray & Davis starting motor with reduction gearing for open flywheel. 1-Motor Pinion; 2-Intermediate…

Gray and Davis laminated type of starting switch.

Starting Switch

Gray and Davis laminated type of starting switch.

Gray & Davis starting switch with both terminals insulated.

Starting Switch

Gray & Davis starting switch with both terminals insulated.