Year: 1896

page_text: Date of Application, 1st June, 1896
Complete Specification Left, 26th Feb., 1897-Accepted, 22nd May, 1897
I, JOHN SMITH RAWORTH, of 46 Christchurch Road, Streatham Hill, in the
County of Surrey, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has reference to an improved construction of connecting rod suitable
for steam and other motive power engines, and also for machines in general wherein
connecting rods are or may be required, and it has for its objects to reduce the cost
of constructiom of such rods and to facilitate the operation of taking up wear.
A connecting rod according to my invention comprises an external frame
composed of suitable material for example wrought iron or steel, or a combination
of the two, for the purpose of resisting tension, and an internal strut of suitable
material for example cast steel, for the purpose of resisting compression, the strut
being made in parts joined together by an adjusting screw by means of which the
total length of the strut can be easily varied.
To provide against any po-sible slackness between the adjusting screw and the parts
of the strut with which it engages, I prefer to form the end of each portion of
the strut in connection with the screw, with a slit, and provide it with one or
more bolts or screws whereby such end can be closed tightly upon the said screw.
In the accompanying drawings,
Fig. 1 shows partly in side elevation and partly in longitudinal section, and Fig. 2
partly in plan and partly in horizontal section, a connecting rod constructed according
to this invention.
In this arrangement the external frame is in the form of a loop 1 the bent
portion 1 of which carries the outer half 2 of the eye or bearing at one end of
the rod, and the ends 1b of which carry the outer half 3 of the eye or bearing at the
other end of the rod, such half 3 being secured against enlarged portions 1° on
the loop ends by screw nuts 4. 5, 5 are the two portions of the strut carrying the
inner balves 2 3 of the two eyes or bearings, these halves being grooved at 2* and 3*
respectively to engage with and slide upon the adjacent portions of the external
frame 1. 6 is an adjusting screw having one end of plain cylindrical form and the
other screw threaded, these ends being arranged within correspondingly formed holes
in the adjacent ends of the parts 5, 5 of the strut. On the screw is formed a collar 6
that rests against the part 5 of the strut and is formed with holes 6b to receive a
pin spanner, or is otherwise adapted to admit of the screw being readily rotated for
the purpose of screwing its one end in and out of the part 5 of the strut and so varying
the length of the strut to suit requirement.
7 are tightening screws by which the adjacent split ends of the two parts of the
strut can be firmly clamped upon the two ends of the adjusting screw. 7* are set
screws for fixing the tightening screws in position.
Figs. 3 and 4 are similar views to Figs. 1 and 2 respectively showing a modified
construction in which the external frame consists of two bolts 1 that are each
screwed at one end into the outer half 3 of one of the eyes or bearings, and are
each connected to the outer half 2 of the other eye or hearing by a screw nut 4, the
said half eyes 2 and 3 bearing against enlarged parts 1° on the adjacent portions of

page_text: the bolts 1. The internal strut used in this arrangement is similar to that shown in
the other arrangement, and is correspondingly figured.
Dated this 1st day of June 1896.
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.
I, JOHN SMITH RAWORTH, of 46 Christchurch Road, Streatham Hill, in the
County of Surrey, 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 an improved construction of connecting rod suitable
for steam and other engines or machines and has for objects to cheapen such rods and
facilitate the operation of taking up wear.
Figs. 1 and 2 of the accompanying drawings are sectional elevations at right
angles to one another showing a connecting rod constructed according to this
invention.
The rod comprises an external loop shaped frame 1 capable of resisting tension and
the ends 1°, 1° of which respectively carry the outer halves 2 and 3 of the bearings
at the ends of the rod, the half bearing 3 being secured against enlarged portions 1°
by screw nuts 4. 5, 5 are two portions of an internal strut capable of resisting
compression and carrying the inner halves 2ª, 3ª of the two bearings; they are slit
at their adjacent ends and engage the adjacent portions of the frame 1 at 2 and 3*.
6 is an adjusting screw having one end plain and the other screw threaded, these ends
being arranged within correspondingly formed holes in the adjacent slit ends of
the parts 5, 5 of the strut which can be clamped on the screw by set screws 5.
6 is a collar with holes 6° by which the screw can be rotated for varying the length
of the strut to suit requirement.
In Figs. 3 and 4 the frame consists of two bolts 1 screwed at one end into the outer
halt 3 of one of the bearings and connected to the outer half 2 of the other bearing
by screw nuts 4. The internal strut is similar to that shown in Figs. 1 and 2.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is :-
1. A connecting rod comprising an external frame capable of resisting tension.
and an internal strut capable of resisting compression, these parts being adapted to
carry the eyes or bearings at the ends of the rod and the strut being made in parts
jointed together by an adjustable screw by means of which the total length of the
strut can be easily varied, substantially as herein described.
2. Connecting rods constructed substantially as hereinbefore described with
reference respectively to and shown in Figs. 1 and 2; aud in Figs. 3 and 4 of the
drawings annexed.
Dated this 26th day of February 1897.