or other Cables.
Year: 1886

page_text: or other Cables. t
I, ANDREW JAMIESON, of the College of Science and Arts, Glasgow, in the
County of Lanark, North Britain, Civil 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, that is to say :-.
"
My said Invention is the development of an Invention for which I applied for
a Patent on 28th May, 1885 (N° 6485) and has for its object to improve the
construction and action of machinery for raising and lowering telegrap or other
cables, and especially to combine the parts of such machinery so that the stresses
to which it is subjected. may be sustained in a better manner than in existing
machinery for; the same purpose and so that it may be more compact and of less
weight and possess other practical advantages.
In carrying out my Invention I provide two drums or large pulleys to be used
for winding up or paying out .telegraph cables, or the grapnel cables or ropes used
in raising and lowering telegraph, cables when repairing, them. The framing
consists of two side frames, constructed by preference of steel or iron plates, with
angled steel or iron strengthening, and fixed between the main and upper decks of
the ship and suitably connected transversely. A strong steel or iron tube extends -
from one side frame to the other and projecting through the frames forms studs on
their outer sides on which the drums are carried...
And in order that my improved machinery, and its various, details may be
properly understood I hereunto append a sheet of explanatory drawings, to be
hereinafter referred to and representing my improvements, figure, 1, being a
sectional front elevation, and figure, 2; a sectional side elevation. In figure, 2, one
side frame is supposed to be removed, and in both figures various well understood
steam-engine and other details are omitted or not, completely shown. The same
reference letters and numerals are used to mark the same or like parts wherever
they are repeated.
Each drum, D, is formed upon the outer side of an internally, toothed wheel, W.,
made with a cylindrical flange, 3, on which is fixed the cylindrical, shell, 4, of the

page_text: drum this shell being by preference of steel and having attached to its outer edge
by an internal angle iron a disk, 5. The wheel, W, is made with an elongated
boss, 6, which is lined with a brass bush to run on a stud formed by the end of a
long horizontal tube, T, which passes through and, across between two side
frames, F. The tube, T, is fixed to each side frame, F, by means of two rings or
bosses, R, one on each side of the frame. These rings are screwed or otherwise
fixed upon the tube and after being accurately adjusted are bolted together
through the frame, F. The side frames, F, which are constructed for being fixed
between two decks of a ship, are made of steel or iron plates with angled steel
or iron strengthening; and each has fixed to it two steam cylinders, C. The
cylinders, C, of each pair are at right angles and the two pistons are connected to
a single crank on a short shaft, CS, having one bearing, 7, fixed to a side frame, F,.
the other bearing, 8, being in a bracket, 9, supported by the tube, T,.and stayed by
rods, 10, fixed to the deck. Each crank shaft, CS, has fast on it a pinion, P,
gearing with a spurwheel, S, on a second-motion shaft, S S, and each second-motion
shaft has fast on it a pinion P2, gearing with one of the internally toothed drum
wheels, W. There is thus a separate complete steam engine with its gearing for
each. drum, D; but when extra power is required to drive one drum, the two
spurwheels, S, can be coupled, whilst the pinion, P 2, of the drum not then in use
can be thrown out of gear. In the arrangement shown in the figures, which may
however be modified, each pinion, P 2, is fixed on its shaft, SS, which is held in a
bearing, 11, fixed to the side frame, F, and is engaged with or disengaged from the
spur wheel, S, by means of a clutch, 12. If preferred the pinions, P2, may be
made movable along their shafts so as to be clear of the drum wheels, W, when
disengaged. The spurwheel, S, is made with an elongated boss or is fixed on a
short tubular shaft through which the shaft, S S, projects, and this boss or tubular
shaft is held in a bearing, 13, on the, bracket, 9, and between the two bearings, 13,
there is a clutch coupling,,14, the parts of which are severally fixed to the bosses
or tubular shafts of the two spurwheels, S. The clutches, 12, 12, 14, are represented
as frictional cone clutches but any other suitable kind of clutch may be employed;
and instead of the clutch; 14; being between the 'two spurwheels, S, it may be
between the crank shafts, CS. A frame bar, 15, figure, 2, is fixed across from one
side frame, F, to the other for carrying the centres or fulcra of the levers for moving
the clutches, 12, 12, 14, one, 16, of these levers being shown in figure, 2. =
The pinions, P2, gearing with the internally toothed drum wheels, W, are placed
as near as possible to the point where the cables or ropes first touch the drums, D,
the cables or ropes being guided to the drums in the direction indicated by the
dotted line, -17; in figure, 2; The cable is led away from each drum by drawing off
gear of the usual kind which is not shown in the figures but which may be driven
in any convenient way from the gearing shown.
The internally toothed rims of the drum wheels, W, are externally shaped for
being acted on by brake straps, B, fitted in the usual way with wood or other
frictional blocks. The means indicated for tightening or slackening each brake
strap, B, consists of a spindle, 18, made with right-hand and left-hand screw threads
to work in lugs formed or fixed on the ends of the strap, the spindle, 18, having
a' handwheel on it in a position convenient to the operator who controls the
machinery..
In consequence of the position of the pinions, P2, in relation to the point of
application of the stress of the cables the transmission of the stresses to the bearing
studs of the drums is minimised, so that 'the requisite strength of the machinery
is obtainable with a very light and compact construction. The drums, D, being
overhung on the studs or ends of the fixed tube, T, allows of a cable or grapnel
rope being easily put on or taken off either drum; whilst the drums themselves
may be easily taken off for examination or repair, or for being stowed away when
not about to be used.

page_text: Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
1. The improved combination of parts constituting my improved machinery
for raising or lowering telegraph or other cables, substantially as hereinbefore
described.
2. The mounting of the winding drums, D, on fixed studs or the ends of a tube
or shaft fixed to and projecting from the side frames, substantially as herein before
described.
3. The constructing of the machinery with two drums and with completo
engines and driving gear for each drum together with coupling apparatus admitting
of the power of either or both engines being applied to either drum, substantially
as hereinbefore described.
EDMUND HUNT,
Applicant's Agent.