Improved Means or Devices for Coupling and Insulating the Shafts of Dynamo Machines or for other purposes where Parts are required to be Connected Together and Insulated from each other.
Year: 1890

page_text: Date of Application, 15th Mar., 1890
Complete Specification Left, 31st Dec., 1890-Accepted, 21st Feb., 1891
PROVISIONAL SPECIFICATION.
Improved Means or Devices for Coupling and Insulating the Shafts
of Dynamo Machines, or for other purposes where Parts are
required to be Connected Together and Insulated from each other.
We CLEMENT JOHNSON BARLEY of 25 Trevor Square Knightsbridge in the
County of Middlesex Engineer and HEW STEVENSON of 29 Birchington Road
Kilburn in the said County Engineer do hereby declare the nature of our said
invention to be as follows:-
Our invention relates more particularly to the coupling of the armature spindle
of a dynamo or other electrical machine to the shaft of the steam engine or machine
to which it is connected and has for its object the providing of good insulation and
firm connection and great transmitting power.
The insulated connection is made according to this invention as follows
Between the two or more parts to be connected a disc or piece of insulating
material or several such discs or pieces is or are placed. Through the parts to
be connected and through the insulating material taper holes are made and in these
holes are placed taper bolts or screws having fitted over them taper sleeves of insu-
lating material. By means of these taper bolts or screws the parts to be connected
and insulated are drawn and held firmly together.
The invention can be applied to the attachment and insulation of parts in
electrical apparatus generally such as for instance the connection of a dynamo
bearing pedestal to and its insulation from the bed plate.
Dated this 15th day of March 1890
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improved Means or Devices for Coupling and Insulating the Shafts
of Dynamo Machines, or for other purposes where Parts are
required to be Connected Together and Insulated from each other.
We CLEMENT JOHNSON BARLEY of 25 Trevor Square Knightsbridge in the
County of Middlesex Engineer and HEW STEVENSON of 29 Birchington Road
Kilburn in the said County Engineer do hereby declare the nature of our said
invention and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :-
Our invention relates more particularly to the coupling of the armature spindle
of a dynamo or other electrical machine to the shaft of the steam engine or machine
to which it is connected and has for its object the providing of good insulation
and firm connection and great transmitting power.
The insulated connection is made according to this invention as follows:—and as
illustrated in section in the accompanying drawings. The two or more parts to be
connected are represented in Fig. 1 of the drawing as being the shaft A of a
dynamo having formed on it the flange a and by the shaft B of the driving engine
having formed on it the flange b. Between the parts facing each other a disc or
piece of insulating material or several such discs or pieces is or are placed as shewn
at C. This may be simply a flat piece of material or it may be enlarged at ite mid
portion to take into recessed parts of the coupling as shewn at c. Through the
flanges a and b and also through the insulating material C taper holes are made and
in these holes are placed taper bolts or screws D having fitted over them taper
sleeves of insulating material E. By means of these taper bolts or screws the

page_text: parts to be connected and insulated are drawn and held firmly together by the
nuts d.
The invention can be applied to the attachment and insulation of parts in electrical
apparatus generally such as for instance the connection of a dynamo bearing
pedestal to and its insulation from the bed plate or switch or cut out fittings may
in the same way be fixed to and insulated from a frame or support or the brush
holders of electrical machines may be similarly attached to the parts on which they
are mounted or the invention can be applied in any other case where parts are
required to be both connected to each other and insulated from each other..
We have shewn two further applications in Figures 2 and 3. Figure 2 shews the
insulation of brush spindles (one of which only is shewn at A) between the opposite
brushes and the brush rocker B so as to insulate the spindles from the rocker. The
parts which correspond with those shewn in Figure 1 are marked with the same
letters of reference and require no further description. The brush spindle not
shewn will be arranged like that shewn. Figure 3 shews the insulation of the
spindle A say of a switch or the brush spindle of a dynamo or motor from the
supporting plate B by means of the taper part D of the spindle (corresponding to
the tapered bolts D in the preceding figures) the said taper part being covered by
insulating material E there being in this case also a washere of insulating material
under the nut.
Any suitable insulating material may be used such for example as celluloid hard
wood, ebonite, vulcanized fibre or the like.
The arrangement is especially adapted for insulating the couplings and bearings
of dynamos and motors as it is both mechanically and electrically good and is
capable of transmitting great power.
Faving now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
First. The means or devices for coupling two parts together and at the same time
insulating them from each other substantially as hereinbefore described and illustrated
in Figures 1 and 2 of the accompanying drawings,
Second. The connection and insulation of a spindle or the like to and from a
plate or support by a taper part of the spindle covered with a taper sleeve of insu-
la ing material entering a taper hole in the plate or support and a nut with an
in ulating washer beneath as shewn in Figure 3 of the accompanying drawings.
Third. For use in connecting two parts together and insulating them from
each other taper bolts having thereon taper sleeves of insulating material and
entering taper holes and secured by nuts as described and shewn in the accompanying
drawings.
Dand L: 0041 1 of 1900
C. J. BARLEY.
HEW STEVENSON.