the Shafting of Marine and other Engines.
Year: 1886

page_text: the Shafting of Marine and other Engines.
We, SAMUEL WESLEY ALLEN, of Exchange Buildings, and ALEXANDER KELLAR,
of the Dumfries Engine Works, both of Cardiff, in the County of Glamorgan,
Engineers, do hereby declare the nature of this invention to be as follows:-
Our invention relates to an improved method of extracting the bolts from the
flanged couplings of the shafts of marine and other engines.
It is matter of common experience that the task of taking out coupling bolts
from an engine shaft is an exceedingly onerous one, the time required for
accomplishing it being out of all proportion to the weight of the mass removed,
and only to be accounted for on the ground that from the difficulty of getting at
the bolts to take them out, as well as of bringing sufficient pressure to bear upon
them to overcome the powerful grip holding them in the flanges they have been
used to connect, no process short of drilling out has been found satisfactory.
In carrying our invention into practical operation, we provide two strong iron or
steel plates to serve as jaws. These are connected by two screws, one passing
through their centre, and the other through the outer end. A supplementary, and
lighter, jaw is placed between the two before mentioned jaws. We furnish the two
screws with nuts proper for adjusting the distance between the two main jaws, as
well as to enable one outer jaw and the supplementary one to grasp the coupling
flanges in the manner of a parallel vice.
The end of the outer jaw last mentioned is hollowed to allow it to pass over the
head of the coupling bolt, while the corresponding end of the opposite outer jaw is
perforated to receive a steel or iron pin longer than the bolt-hole in the flanges.
The nuts having been removed from the bolt to be driven out, our apparatus
made as above described is fixed on to the flanges, and the outer jaw with the steel
pin screwed up towards the end of the coupling bolt. Steel wedges are then driven
in between the pin and the bolt end, and while the bolt is still under the stress of
the wedges, a smart blow, or blows, is delivered upon the outer end of the pin.
The combined influence of the stress of the wedges, and of the blows upon the pin,
suffice to start the bolt, and when it is once on the move, its complete extraction
from the flanges is quickly effected.
1000
PHILLIPS & LEIGH,
Agents for the Applicants.

page_text: An Improved Apparatus for Extracting Coupling Bolts from
the Shafting of Marine and other Engines.
We; SAMUEL WESLEY ALLEN, of Exchange Buildings, and ALEXANDER KELLAR,
of the Dumfries Engine Works, both of Cardiff, in the County of Glamorgan,
Engineers, 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 relates to an improved method of extracting the bolts from the
flanged couplings of the shafts of marine and other engines.
It is matter of common experience that the task of taking out coupling bolts
from an engine shaft is an exceedingly onerous one, the time required for
accomplishing it being out of all proportion to the weight of the mass removed,
and only to be accounted for on the ground that from the difficulty of getting at
the bolts to take them out, as well as of bringing sufficient pressure to bear upon
them to overcome the powerful grip holding them in the flanges they have been
used to connect, no process short of drilling out has been found satisfactory.
In order that our invention and the means by which the same may be carried
into practical effect may be thoroughly understood, we now proceed to describe it
in detail, referring in so doing to the accompanying drawings which are to be
taken as part of this specification and read therewith and in which like parts are
marked throughout the figures in which they occur with the same reference letter.
Fig. 1 is a side elevation illustrating the application of our invention to the
dislodgement of the four bolts of a flange coupling, one bolt being shewn as partly
expelled.
Fig. 2 is an end elevation of our improved apparatus.
Fig. 3 is an end elevation illustrating the application of the wedges.
Fig. 4 is a plan partly in section corresponding with Figs. 1 and 3 illustrating
the application of the wedges.
Figs. 5 and 6 are, respectively, sectional elevation and front elevation of the
supplementary jaw.
A is a shaft; a, a, the flanges forming with the bolts, a', the coupling.
B is a jaw forked at its lower extremity to enable it to embrace the head of the
bolt to be removed marked in Fig. 1 a³.
B¹ is a second jaw. These two jaws form a pair.
C is the supplementary jaw; D and E are adjusting screws with a proper com-
plement of nuts by means of which the jaws B, B and C can be brought into
and kept in their relative working positions as the same are illustrated in Fig. 1.
F F are two wedges.
The method of using our invention is as follows
The nuts are first taken off the bolts to be removed.
We fix the jaws B and C, respectively, on opposite sides of the coupling or
equivalent connection, and screw them up by means of the screws D and E.
The third jaw B¹ is next placed in position, as shewn in Fig. 1, leaving a space
11
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ப

page_text: a pair of wedges, F, F¹ can be driven as far as is necessary to bring the bolt to be
expelled into a condition of stress, as far as its hold in the holes of the flange is
concerned.
While the bolt is in this condition of stress a smart blow from a hammer is
delivered upon the end of the pin B' before which the bolt moves.
The wedges are then driven in and the blows on the pin continued until the
expulsion of the bolt is effected.
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. An expelling pin in combination with the supporting jaws and wedges for the
purpose of our invention substantially as described and illustrated.
2. The combination of a device capable of supporting an expelling pin, which
will deliver upon the end of an unnutted bolt the expelling force of a blow
delivered upon its exposed end or receive the expelling effort of one or a pair of
wedges driven in between its nose and the exposed end of the bolt to be expelled
substantially as and for the purpose described and illustrated.
Datcu unis oven day of September
PHILLIPS & LEIGH,
Patent Agents,
22, Southampton Buildings, Chancery Lane, W.C.,
Agents for the Applicants.