Year: 1886

page_text: We, JOHN FRANCIS HALL, of Norbury, Sheffield, Manager of Steel Works, and
JOHN VERITY, of Billing Bank, Bramley, near Leeds, Engineer, both in the County
of York do hereby declare the nature of this invention to be as follows:―
Our invention refers to an arrangement of coupling, whereby strained or bent
shafts, or shafts at an angle to each other may be cupled together and a rotary
notion transmitted from one to the other. These improvements are applicable to
screw propeller, and other shafts. The ends of the shafts to be connected are
recessed or cupped to receive a ball which is inserted between them; this ball
retains the axis of the end of each shaft an equal distance from its centre without
retarding or interfereing with the motion thereof, as described in the Specification of
Arthur Verity's Patent No. 227S dated 24 May 1881.
The two ends to be connected are provided with discs, either forged or cast solid
therewith, or made separately and secured upon the shafts by any suitable means.
Upon the face of each disc there are projecting jaws corresponding and engaging
with each other. In order to keep the ends of the shafts in contact with the
ball above mentioned, suitable bolts are passed through both dises fitting loosely in
their bolt holes.
Under each bolt head or nut we place a spring washer.
Not only by this arrangement are the parts thus kept in close contact, but the
spring washers admit also of the discs separating and closing upon each other when
the shafts are rotating with any irregular or angular movement.
In order to reduce friction to a minimum, a parallel piece of suitable material is
passed between the driving ahead faces of the jaws on the driving shaft, and the
driven ahead faces of the jaws on the driven shaft. These pieces are lipped on to
the jaws at the bottom or inner end to prevent them flying out whilst in motion.
For the purpose of taking up the backlash and compensating for the wear on
the driving faces of the jaws, or on the parallel pieces, adjustable pieces made
wedge form are fitted between the driving ahead faces of the jaws on the driving

page_text: shaft and the driven ahead faces of the jaws on the driven shaft, or between the
other faces of the respective jaws, if preferred when parallel face pieces are not
used between them.
Each of the adjustable, and also the parallel pieces are slightly rounded upon
their faces to admit of any irregular or angular movement herein before referred to.
Each of the wedge pieces is secured and may be adjusted by means of an
adjustable ring.
On the inner surface or circumference of this adjustable ring are formed internal
cams corresponding with the number of wedge shaped pieces. These internal cams
are in close contact with the outer ends thereof, and by turning the same round the
cams act upon such outer ends of the wedges, and adjust them between the jaws.
After the adjustment has been made the a ljustable ring is retained in its position
by inserting blocks of wood or other suitable material between the herein before
mentioned wedge shaped pieces and the ends or heels of the internal cams, and
after the blocks or packings have been inserted they are covered by a metal plate
whereby they are held in position.

page_text: Improvements in the Construction of Couplings for Screw
Propeller and other Shafts.
We, JOHN FRANCIS HALL of Norbury Sheffield, Manager of Steel Works, and
JOHN VERITY of Billing Bank, Bramley near Leeds, Engineer, both in the County
of York, 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 :-
Our invention refers to an arrangement for coupling shafts together in such a
manner that should they by unequal wear having taken place in their bearings, or
by accident or other causes become strained or bent, or out of line, or placed at an
angle to each other, they will freely rotate without any undue friction being put
on the bearings or strain upon the shafts.
This coupling will transmit a rotary motion from one to the other and is
applicable to screw propellor and other shafts.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a side elevation. Fig. 2 a back elevation. Fig. 3 a section and Fig. 4
a transverse section through A, B Fig. 3.
The two ends of the shafts a and b to be connected are recessed or cupped
and d to receive a ball e which is inserted between them.
at c
This ball e retains the axis of the end of each shaft a and b an equal distance
from its centre without retarding the motion thereof as described in the Specifi-
cation of Arthur Veritys Patent No. 2278 dated 24th May 1881.
The two ends a and b to be connected are provided with discs ƒ and g either
forged or cast solid therewith as shewn at Fig. 3, or made separately and secured
upon the shaft by any suitable means.
Upon the face of each disc ƒ and g are projecting jaws h and i corresponding and
engaging with each other.
In order to keep the ends of the shafts a and b in contact with the ball e
suitable bolts are passed through both discs fƒ and g fitting loosely in their bolt
holes.
Under each bolt head or nut we place a spring washer m.
Not only by this arrangement are the parts thus kept in close contact, but the
spring washers m admit also of the discs ƒ and g separating and closing upon each
other when the shafts are rotating with any irregular or angular movement.
In order to reduce friction to a minimum, a parallel piece n of suitable material
is passed between the driving ahead face of the jaws on the driving shaft and the
driven ahead face of the jaws on the driven shaft.
The parallel pieces n are lipped onto the jaws at the bottom or inner end as
shewn at o to prevent them flying out whilst in inotion.
For the purpose of taking up the backlash and compensating for the wear on the
driving faces of the jaws haud i or on the parallel pieces n, adjustable pieces p
made wedge form are fitted between the driving astern faces of the jaws on the
출

page_text: driving shaft and the driven astern faces of the jaws on the driven shaft, or
between the other faces of the respective jaws, if preferred, instead of the parallel
pieces.
Each of the adjustable and also the parallel pieces are slightly rounded on their
fuces to admit of any irregular or angular movement herein referred to.
Each of the wedge pieces p is adjusted or secured by means of an adjustable
ring g
On the inner surface or circumference of this adjustable ring q are formed
internal cams r corresponding with the number of wedge shaped pieces.
These internal cams are in close contact with the outer ends 8 of the wedge
pieces, and by turning the cams 7 round they act or bear upon the outer ends of
the wedges and adjust and retain them between the jaws.
After the adjustinent has been made the adjustable ring is retained in its position
by inserting blocks of wood t or other suitable material between the herein before
mentioned wedge shaped pieces and the ends or heels u of the internal cams r, and
after the blocks or packings t have been inserted they are covered by a metal
plate v which is attached to the ring q by means of suitable bolts or screws w
whereby they are held in position.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
1st. The adjustable cam ring with its internal cams r for retaining and
adjusting the wedge pieces p substantially as herein set forth.
2nd. The packings or blocks of wood t for retaining the cam ring q in position
when adjusted, substantially as herein set forth.
3rd. The parallel face pieces n lipped as shewn at o for securing them in
position, also the adjustable pieces p rounded upon their faces, substantially as
herein set forth.
4th. The combination of the various parts forming the coupling for screw
propellor and other shafts, arranged substantially as and for the purposes herein
set forth.
.
Y
1
1000