Arrangement for Mounting and Driving Dynamo-electric Machines.
Year: 1886

page_text: Arrangement for Mounting and Driving Dynamo-electric
Machines.
I, HENRY PERCY HOLT of Openshaw near Manchester in the County of
Lancaster Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement:-
My invention relates to the mounting and driving of dynamo-electric machines,
in such manner as to provide for supporting and varying or entirely relieving the
driving strain, and for lubrication of the bearings, as I will describe referring to
the accompanying drawings, shewing by way of illustration a dynamo-electric
machine mounted on the column or standard of a gas motor or other engine and
driven by frictional contact with its flywheel. Fig. 1 is a longitudinal section
through the axis of the machine and Fig. 2 is a front view. A is part of the
column or standard and B is part of the rim of the flywheel of the motor engine.
On a pin C as a fulcrum I mount the frame D which carries the dynamo-electric
machine E. In the upper part of the frame D is firmly clamped a tubular shaft F,
within which is a spindle G, carrying at its front end the armature of the dynamo-
electric machine E, having at its rear end a collar g and a screw nut g¹. A small
flywheel H has its boss bored internally to fit on the stationary shaft F and the
collar g.
On this boss h a number of rings of leather, or such like somewhat
yielding material, constituting a driving pulley L, are clamped by a washer set
up by the nut g¹. In the frame D there is formed a basin like cavity & containing
oil into which dips a rim h¹ projecting from the boss of the wheel H. This rim by
its revolution carries up oil and throws it off centrifugally, and some of the oil
thus thrown off is led along the sloping cover d to the oil hole d² for lubricating
that front portion of the tubular shaft F which fits the spindle G. The oil passing
backwards from this part finds its way back to the rear end of the shaft F in front
of the collar g and can then flow forwards to the oil basin d lubricating on its way
the bearing of the boss h on the shaft F. The boss of the armature of the
dynamo-machine is made as a cup M with a projecting lip m so that such oil as
finds its way out at the front of the tube F is caught within the cup M and thrown
by its lip m back into the oil basin d. The frame D is supported by a screw N
and spring O the force of which can be varied by turning a hand nut n, so that,
by more or less straining the spring, the pressure of the pulley L against the

page_text: driving wheel B can be increased or diminished. The spring can be readily
slackened so far that the pulley L drops out of contact with B, the dynamo-machine
being thus disconnected from the driving motor.
Although I have shewn in the drawings a particular form of dynamo-electric
machine mounted on the column or standard of an engine and driven from its
flywheel, it may be readily understood that dynamo-electric machines of other
forms may be mounted in a similar way on any suitable standard or bracket, and
driven from any suitable pulley or wheel.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
Mounting and driving a dynamo-electric machine in the manner herein described
and illustrated by the drawings, that is to say, fixing it on a pivotted bracket
supported by an adjustable spring and carrying a stationary tubular shaft, within
which revolves a spindle carrying at its one end the armature of the dynamo-
machine and at its other end a driving pulley of leather or such like material which
is pressed against the rim of a driving wheel.