Improved Couplings or Connections of Rods and Shafts of Machinery.
Year: 1891

page_text: Date of Application, 3rd Mar., 1891
Complete Specification Left, 2nd Dec., 1891-Accepted, 2nd Jan., 1892
PROVISIONAL SPECIFICATION.
Improved Couplings or Connections of Rods and Shafts of
Machinery.
I, HENRY NICHOLAS HARVEY, of Hayle, in the County of Cornwall, Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention has reference to the connecting together of rods and shafts of
machinery, such as the main rods of pumping and other machinery and shafting
generally.
According to the invention the rods or shaft lengths are provided with flanged
or enlarged ends or made of varying diameter and size, and over these parts is
provided and fitted a connecting or coupling box or clasp so adapted as to grasp
the said two ends of the rod or shaft and hold or clasp them together. Then in
conjunction with these there is provided a gib and cotter, wedge, or the like, which
is driven or applied between the adjacent ends of the rod or shaft lengths whereby
they are forced or kept apart and firmly in contact with the said connecting box or
case. By this means no longitudinal movement can take place, and a rod or shaft
made up of lengths so coupled or connected, is rendered as rigid practically as a
solid rod or shaft.
The coupling or connecting boxes or clasps may be made in two parts (or more
if desired) which are held together by bolts and nuts, studs, hoops or rings, or
equivalent means.
In the main rods of pumping machinery, and machinery wherein the rods work
or are used in an analogous manner--having couplings or connections according to
this invention, all the load is carried by the coupling boxes or clasps themselves,
the only purpose served by the bolts being that of keeping the parts of the
couplings or clasps together.
Dated thin and d. of ML 1001
CHEESBROUGH & ROYSTON,
15, Water Street, Liverpool, Applicant's Patent Agents.
COMPLETE SPECIFICATION.
Improved Couplings or Connections of Rods and Shafts of
Machinery.
I, HENRY NICHOLAS HARVEY, of Hayle, in the County of Cornwall, 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 has reference to the connecting together of rods and shafts of
machinery and shafting generally.
According to the invention, the rods or shaft lengths are provided with flanged
or enlarged ends or made of varying diameter and size, and over these parts is
provided and fitted a connecting or coupling box or clasp so adapted as to grasp
the said two ends of the rod or shaft and hold or clasp them together. Then in
conjunction with these there is provided a gib and cotter, wedge, or the like, which
is driven or applied between the adjacent ends of the rod or shaft lengths whereby
they are forced or kept apart and firmly in contact with the said connecting box or
case. By this means no longitudinal movement can take place, and a rod or shaft
made up of lengths so coupled or connected, is rendered as rigid practically as a
solid rod or shaft.

page_text: The coupling or connecting boxes or clasps may be made in two parts (or more
if desired) which are held together by bolts and nuts, studs, hoops or rings, or
equivalent means.
In the main rods of pumping machinery, and machinery wherein the rods work
or are used in an analogous manner-having couplings or connections according to
this invention, all the load is carried by the coupling boxes or clasps themselves,
the only purpose served by the bolts being that of keeping the parts of the
couplings or clasps together.
In the drawings which serve to illustrate this invention;
Figure 1 is a longitudinal view, partly in section, shewing the improvements in
couplings or connections of rods and shafts.
Figure 2 is another longitudinal view, partly in section, taken at 90° from that
shewn in Figure 1.
Figure 3 is a cross section of the coupling or connection taken at the line XX
Figure 1.
Referring now to the drawings, a, a, represent the rods to be coupled; b are the
enlarged 'ends of said rods; e is the divided coupling or connecting box or clasp;
d are the bolts or studs by which the two parts of the clasp or box are connected
together; e is the gib, and the split cotter, by which the two ends of the shaft are
pressed apart and against the shoulders e of the clasp or box c.
It will be seen that in the examples shewn in the drawings, that the gib and
cotter e, f, pass through grooves or ways provided for them in the ends 6 and the
box or clasp c.
It will readily be seen from the example shewn in the drawings, that the box or
clasp c is very easily and quickly applied or taken off, and hence the connection of
two shafts can be made or broken rapidly; and that when the connection is made,
the load is carried by the coupling boxes or clasps themselves, the studs or bolts d
thereof serving merely to keep the parts of said boxes or clasps together.
The example illustrated shews only one form of my invention, but as above
stated, it may with respect to the construction of parts, be modified in different
ways as for instance, the connecting box or clasps may be made in more than two
parts, if desired, and such parts may be connected together by other means than by
bolts or studs. Then as regards the form of the enlarged ends b, these may vary
without departing from the general effect attained by the one shewn in the
drawings.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The herein described improved rod or shaft coupling that is to say, a coupling
or connection wherein the rods or shafts are provided with enlarged ends, and said
ends are surrounded by a box or clasp constructed as described and are made and
maintained rigid within said box or clasp, by devices such as specified; for the
purposes set forth.
Dad .:.
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool, Applicant's Patent Agents.