Improvements in and relating to Couplings or Joints for Rods, Shafting, and the like.
Year: 1899

page_text: .
Improvements in and relating to Couplings or Joints for Rods,
Shafting, and the like.
We, WILLIAM BAYLIFF and THOMAS DUTTON BAYLIFF, both of The Wirral
Foundry, Beaufort Road, Birkenhead, Cheshire, Engineers, and BENJAMIN DRAPER,
of 2, Knowsley Grove, Everton, Liverpool, Engineer, do hereby declare the
nature of this invention to be as follows:
This invention relates to means for coupling or connecting the abutting ends
of rods, shafting, and the like.
In carrying out our invention we form in such rod or shaft-ends a key-way
or recess, which recesses are adapted to receive an inclined key, or a dove-tail
toggle, or the like; and around such joint we provide a sleeve or coupling, and
one of the functions of this sleeve is to retain the key within its recesses in the
rod-ends.
Various arrangements of such key, recesses, and sleeve, will be employed; one
example will be as follows. The sleeve will be in two halves, and such halves
will possess inclined grooves and dovetail ridges, the ridges of one half entering
the grooves of the other-half in such a manner that as one half is slided into the
other half the two halves bind on to the shaft ends within them. In the inner
surface of one half coupling, we form a groove which receives a key and this
key projects beyond the inner surface of the half-coupling and such projecting
portion possesses two inclined surfaces. In the end of each rod or shaft we form
an inclined groove, adapted to receive the inclined portions of such key. Conse-
quently when the rod ends are placed over such key and the two halves of the
coupling are slided together such key is retained in the two inclined grooves of
the rod ends. The inclined surfaces of the key thus prevent the rods from being
drawn asunder whilst the key itself prevents one rod turning independently of
the other. We may use a second key possessing inclined facets whose tendency
is to force the rods apart. The two keys thus act in opposition to one another
and the object of this arrangement is to prevent the joint from shaking.
Instead of possessing inclined surfaces, the key above specified may possess
projections which enter recesses in the rods, whereby the latter are prevented from
being pulled asunder.
The outer coupling, whose main function is to retain the key in the rod ends,
may be a complete cylindrical sleeve, or may be in two halves which may be
bolted together. Where the coupling consists of two-halves adapted to wedge
themselves together as above specified, their meeting edges i.e. their grooves and
ridges. may be gapped so that one half may enter the other and be tightened by
sliding a short distance instead of one half sliding the whole length of the other
balf.
It will he understood from the above description that our invention consists

page_text: of a key by which the ends of rods or shafts are locked together, and an outer
sleeve or coupling whose main function is to keep such key in place.
Dated this 29th day of September 1899.
J. A. COUBROUGH,
Chartered Patent Agent,
10, St. George's Crescent, Liverpool,
Agent for the Applicant.
T'.
Improvements in and relating to Couplings or Joints for Rods,
Shafting, and the like.
We, WILLIAM BAYLIFF and THOMAS DUTTON BAYLIFF, both of the Wirral
Foundry, Beaufort Road, Birkenhead, Cheshire, Engineers, and BENJAMIN DRAPER,
of 2, Knowsley Grove, Everton, Liverpool, 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:-
This invention relates to means for coupling or connecting the abutting ends
of rods, shafting, pipes and the like.
In carrying out our invention we form in such rod or shaft-ends a key-way
or recess, which recesses are adapted to receive an inclined key, or a dove-tail
toggle or the like: and around such joint we provide a sleeve or coupling, and
one of the functions of this sleeve is to retain the key within its recesses in the
rod-ends.
In the drawings annexed Figure 1 is a side view and Figure 2 an end view of a
coupling according to this invention, and Figure 3.is a plan of the lower half of
the sleeve thereof. Figures 4, and 5 shew modified forms of couplings, and
Figure 6 is an end view of the coupling shewn in Figure 5.
In Figure 1 the sleeve a is in two pieces. The upper piece of the sleeve
possesses ridges b which dovetail with corresponding ridges 61 in the lower piece
of the sleeve. These dovetail ridges are arranged on an incline as shewn in
Figure 1, consequently when the upper piece of the sleeve a is driven on to the
lower piece in the direction of the arrow the two pieces bind on to the shaft ends
within them. In the inner surface of the lower piece we form a groove which
receives a key c which projects beyond such surface, and such key possesses two
inclined surfaces. In each of the rod or shaft-ends we form an inclined groove
adapted to receive the inclined portions of such key. Consequently when the rod
ends are placed over such key and the two halves of the sleeve a are driven
together in the manner referred to the key c is retained in the two inclined
grooves of the rod ends. The inclined surfaces of the key thus prevent the rod
ends from being drawn asunder, whilst the key itself prevents one rod from
turning independently of the other.
On reference to Figure 4 it will be seen that we may use a second key d
possessing inclined facets whose tendency is to force the rods apart. The two
keys c and d thus act in opposition to one another and prevent the joint from
shaking.
In this modification the two halves of the sleeve a may be flanged as shewn
and bolted together or they may be dovetailed as in Figure 2 and the upper half
provided with a key-way which permits of its being driven over the key d.
Instead of possessing inclined surfaces the key e may possess projections which
enter recesses in the rod ends whereby the latter are prevented from being drawn
asunder.

page_text: In the coupling shewn in Figures 5 and 6 a double dovetailed toggle or key
is used, the rod ends being grooved to receive it. Such key is
retained in place by a cylindrical sleeve a which is retained by a set
screw e as shewn, or the dovetailed sleeve shewn in Figures 1 to 3 may be
used and in this case a teat or projection on the key may enter a recess in the lower
or stationary half of the dovetailed sleeve a.
Where the coupling or sleeve comprises two halves adapted to wedge them-
selves together as above specified their meeting edges .e their ridges and b
may be gapped so that one half may enter the other sidewise and be tightened by
being driven a short distance only instead of the one half sleeve being driven the
whole length of the other half.
The two-piece sleeve shewn in Figures 1 to 3 may be used-with or without the
key as a pipe coupling or for the purpose of closing a burst or split pipe.
Similarly the sleeve may form the boss or hub of a pulley, bevel, or other
wheel.
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: :-
1. A coupling for rods, shafting, and the like comprising a key by which the
ends of such rods and the like are locked together, and an outer sleeve which
retains such key in its place, combined, arranged and operating, substantially as
described.
2. The two-piece sleeve a provided with dovetail ridges b, arranged upon
an incline whereby the two pieces of the sleeve are caused to bind upon the rods,
shafting, pipes or the like upon which they are driven, substantially as described.
Dated this 30th day of June 1900.
J. A. COUBROUGH,
Chartered Patent Agent,
10, St. George's Crescent, Liverpool,
Agent for the Applicants.