Improvements in Shaft and Rod Couplings.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Shaft and Rod Couplings.
We, FREDERICK JOHN TALBOT, of Globe Steel Works, Steel Manufacturer,
and WILLIAM CLARKE, Engineer, of 15 Townend Street, both of Sheffield,
in the County of York, do hereby declare the nature of this invention to be as
follows:-
The invention relates to an improved means of coupling all kinds of machine
shafting or the joining together of rods used for signal or other purposes.
The invention consists of a cylindrical coupling divided into two parts
longitudinally, the two parts being bolted together by a number of bolts, preferably
eight, four of which are on one side of the coupling and four on the other side,
each bolt being preferably securely held in position by what is known as "Talbot's
Patent Lock Nut," (Patent No. 11,13187).
In order that the coupling may have a firm grip on the shafts to be connected,
we make a series of transverse cuts or slits, preferably three, on one side of
each half of the coupling, thus partially dividing it into four parts to form
four separate cramps, two of which grip each end of the shafts to be connected.
We carry the aforementioned slits through each half of the coupling to the
centre line or thereabouts, and when the halves are bolted together, the four
divided portions of each half couple up to the solid portion of the other half of
the coupling, thus forming four separate cramps, and in order that each cramp
may have its full gripping power, we place one of the aforementioned bolts through
the centre of each cramp, so that each bolt may exert the maximum of pressure on
a limited area and enable the coupling to be fully effective.
According to our invention we may increase the gripping power of the
coupling by forming a series of longitudinal grooves along the interior part, which
comes in direct contact with the shafts to be connected.
The holes which are formed in the coupling to receive the aforementioned
bolts may be so recessed as to receive the head of the bolt on the one side
and the nut on the other side within the outer circumferential line of the coupling
to avoid accident should a belt or other article come in contact with the coupling
whilst in motion.
The external portion of the coupling may be modified in shape for convenience
or cheapness of manufacture so long as the principle of obtaining a number of
cramps in the same coupling is preserved. The heads of the bolts and the nuts
may be covered by an independent cylindrical casing, and the bolts may be arranged
to fit into grooves or notches in the shafts to assist in keeping the ends of the
shafts in contact.
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.

page_text: We, FREDERICK JOHN TALBOT, of Globe Steel Works, Steel Manufacturer,
and WILLIAM CLARKE, Engineer, of 15 Townend Street, both of Sheffield, 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 :-
The invention relates to an improved means of coupling all kinds of machine
shafting or the joining together of rods and the like used for signal or other
purposes.
Fig. 1 is an elevation of our improved coupling.
Fig. 2 is a plan and Figures 3 and 4 are cross sections thereof drawn respectively
on the lines A B, C D of Fig. 1. and
Figures 5, 6, 7 and 8 are corresponding views of our improved coupling showing
a slight modification.
In all the figures like parts are indicated by similar letters of reference.
The invention consists of a cylindrical coupling divided into two parts, a. a,
longitudinally, the two parts, a. a', being bolted together by a number of bolts b,
preferably eight, four of which are on one side of the coupling and four on
the other side, each bolt being securely held in position by a nut e preferably
of the character known as "Talbot's Patent Lock Nut" (Patent No. 11,13187).
In order that the coupling may have a firm grip on the shafts to be connected,
we make a series of transverse cuts or slits a², preferably three, on one side of
each half of the coupling, thus partially dividing it into four parts to form
four separate cramps, two of which grip each end of the shafts d to be connected.
We carry the afore-mentioned slits a through each half of the coupling to the
centre line or thereabouts, and when the halves are bolted together, the four
divided portions of each half couple up to the solid portion of the other half of
the coupling, thus forming four separate cramps, and in order that each cramp
may have its full gripping power, we place one of the afore-mentioned bolts
through the centre of each cramp, so that each bolt may exert the maximum
of pressure on a limited area and enable the coupling to be fully effective.
According to our invention we may increase the gripping power of the coupling
by forming a series of longitudinal grooves a along the interior part which comes
in direct contact with the shafts d to be connected.
The holes a', which are formed in the coupling to receive the afore-mentioned
bolts, may be recessed as shown at a³, so as to receive the head of the bolt b on the
one side and the nut c on the other side within the outer circumferential line of
the coupling to avoid accident should a belt or other article come in contact
with the coupling whilst in motion.
The external portion of the coupling and the nuts and bolts may be modified in
shape for convenience or cheapness of manufacture so long as the principle of
obtaining a number of cramps in the same coupling is preserved. The heads of
the bolts & and the nuts e may be covered by an independent cylindrical casing,
as will be readily understood, and the bolts b may be arranged to fit into grooves
or notches in the shafts d, as in the coupling shown in Figures 5 to 8, to assist
in keeping the ends of the shafts in contact and also to increase the holding power
of the coupling.

page_text: Having 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 :-
1. The improved coupling for shafts and rods substantially as herein shown and
described.
2. A coupling for shafts and rods divided into two parts longitudinally and
having a series of transverse cuts or slits on one side of each half of the coupling,
the two parts being secured firmly together by bolts passing through holes formed
in both sides of each part of the coupling, substantially as herein shown and
described.
3. A coupling for shafts and rods divided into two parts longitudinally, each part
having transverse cats or slits on one side thereof, longitudinal grooves along the
inner face thereof, and holes on each side thereof to receive bolts, substantially as
herein shown and described and for the purpose stated.
4. Shaft and rod couplings of the character herein described, having the bolt
holes in each half thereof placed in such position as to correspond with grooves
or notches formed across the shafts, so that the bolts shall fit partly within
such grooves or notches, substantially as herein shown and described and for the
purpose stated.
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HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.