Improvements in Capstans.
Year: 1889

page_text: Date of Application, 24th Sept., 1889
Complete Specification Left 23rd June 1890-Accepted. 16th Aug.. 1890
PROVISIONAL SPECIFICATION.
Improvements in Capstans.
We JESSE COWLEY, of No. 3 Fenwick Terrace, Southtown, Great Yarmouth,
Engineer, and FRANCIS LELEU and JOHN LELEU, trading as F. and J. Leleu,
Limited, of No. 55 Eastcheap in the City of London, Smack, Owners, and Fish
Salesmen, do hereby declare, the nature of this invention to be as follows:-
Our invention relates to further improvements in the capstan described in the
specification filed with the application for Letters Patent, No. 8749 dated 27th May
1889, and refers more particularly to the arrangement of the capstan barrel and
dome, the connection between the two being carried out differently to that described
in the specification above mentioned, and there being some further differences of
construction.
And in order that our invention may be more fully understood, we have shown the
same-in the accompanying drawing, in which
Fig. 1 is a half an elevation and half a sectional view of our improved capstan ;
Fig. 2 is a plan of the foundation plate furnished with a roller path, and a rack;
Fig. 3 is an underside view of the capstan.
Fig. 4 is a view showing the bracket supporting the shaft and the bearing of the
latter.
Fig. 5 shows the worm and clutch gear.
According to, our invention, the capstan barrel. D is bolted upon the base E made of
cast iron or other suitable material and bushed with gun metal so as to be capable of
rotating loosely upon the upriglit shaft A. B, which is furnished with a collar c
designed to receive the said capstan barrel D. The latter is also made of cast iron
and is provided with eight or more rollers F moving on steel pins within brackets or
frames as shewn in Fig. 1, and with four square palls. Around this capstan base E is
fixed in the manner described in the above mentioned specification, a brake band
suitably lined. This brake band is operated by a lever V of wrought iron, pivoted
at o upon a steel pin, and arranged to ship and unship. The before mentioned rollers F
are of cast iron and are covered with gun metal, being moreover thoroughly lubricated
from the top.
The capstan dome I is bolted to the flange of the collar G which is cast separately
on account of the facility with which it can be bored.
This collar G is keyed upon the shaft A. B and secured to the end thereof by means
of a screw-and a nut. The base H of the capstan dome is also cast separately so as to
be bored and bushed with gun metal, and is bolted to the barrel D by means of set
screws. The flange of the collar G rests upon the said base H. The capstan.dome
forms a hollow casting as shewn in Fig. 1 and has four steel palls to gear with the
rack of the base H. By connecting the said palls with the rack, the dome and barrel
are caused to work and wind together, or by unshipping the palls, the barrel remains
stationary and the dome operates alone for the purpose of coiling the bridles and
bringing the gear alongside the vessel in a horizontal position. The dome is further
provided with openings for hand spikes should the latter be required.
The capstan works upon a foundation plate J of cast iron or other suitable material
provided with a roller path upon which move the rollers F and with a rack cast
thereon.
Through the centre of the plate J passes the cast iron deck bearing K, in which
the whole mechanism works, and which is furnished with gun metal bearings and a
gland underneath having for object to prevent the water from gaining access to the
machinery below.
"
The bottom of the shaft A. B rests upon a step bearing or bracket of cast iron

page_text: bushed with gun metal and bolted to a foundation plate arranged in the engine
room.
The said shaft is prevented, from being lifted, by a loose collar fixed thereto by
means of set-screws and working against the lower part of a low bracket fastened
to the underside of the ship's deck and made of cast iron or other suitable metal.
Referring to fig. 5, N is the bracket made of cast iron and fitted with gun metal
bearings, one side of which has a gun metal collar designed to receive the thrust of
the worm 0, which is keyed upon the worm shaft Q fastened to the engine crank
shaft by means of two couplings.
The worin gears with the worm wheel made of cast steel, and connected as
shewn with a clutch gear bored to suit the upright shaft and working by means of
two steel keys upon the shaft. This clutch gear is actuated by a lever of suitable
length.
Dated this 24th day of Santambor 1000
COMPLETE SPECIFICATION.
Improvements in Capstans.
We JESSE COWLEY, of No. 3 Fenwick Terrace, Southtown, Great Yarmouth,
Engineer, and FRANCIS LELEU and JOHN LELEU, trading as F. and J. Leleu
Limited, of No. 55 Eastcheap, in the City of London, Smack Owners and Fish
Salesman, 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 further improvements in the capstan described in the
specification of H. M. Letters Patent, No. 8749 granted to us on the 27th day of May
1889 and refers more particularly to the arrangement of the capstan barrel and dome,
the connection between the two being carried out differently to that described in
the specification above mentioned, and there being some further differences of
construction.
And in order that our invention may be more fully understood, we have shewn the
same in the drawing filed with the Provisional Specification in which
Fig. 1 is half an elevation, and half a sectional view of our improved capstan.
Fig. 2 is a plan of the foundation plate, furnished with a roller path and a rack.
Fig. 3 is an underside view of the capstan.
Fig. 4. is a view showing the bracket supporting the shaft and the bearing of the
latter.
Fig. 5 shows the worm and clutch gear.
According to our invention, the capstan barrel D is bolted upon the base E made of
cast iron or other suitable material and bushed with gun metal so as to be capable of
rotating loosely upon the upright shaft A. B, which is furnished with a collar c
designed to receive the said capstan barrel D.
The latter is also made of cast iron and is provided with eight or more rollers F
moving on steel pins within brackets or frames, as shown in Fig. 1 and with four
square palls.
Around this capstan base E is fixed in the manner described in the above mentioned
specification, a brake band suitably lined.
This brake band is operated by a lever of wrought iron, pivoted at o upon a steel
pin and arranged to ship and unship. The before mentioned rollers F are of cast
iron and are covered with gun metal, being moreover thoroughly lubricated from
the top.
The capstan dome I is bolted to the flange of the collar G which is cast separately
on account of the facility with which it can be bored. This collar G is keyed upon
the shaft A. B and secured to the end thereof by means of a screw' and a nut. The
base H of the capstan dome is also cast separately so as to be bored and bushed with

page_text: The flange of the
gun metal, and is bolted to the barrel D by means of set screws.
collar G rests upon the said base H. The capstan dome forms a hollow casting as
shewn in Fig. 1 and has four steel palls to gear with tho rack of the base H. By
connecting the said palls with the rack, the dome and barrel are caused to work and
wind together, or by unshipping the palls, the barrel remains stationary and the dome
operates alone for the purpose of coiling the bridles and bringing the gear alongside
the vessel in a horizontal position. The dome is further provided with openings for
band spikes, should the latter be required.
The capstan works upon a foundation plate J of cast iron or other suitable material,
provided with a path upon which move the rollers F and with a rack cast thereon.
Through the centre of the plate J passes the cast iron deck bearing K, in which the
whole mechanism works, and which is furnished with gun metal bearings and a gland
underneath, having for object, to prevent the water from gaining access to the
machinery below. The bottom of the shaft A. B rests upon a step bearing or bracket
of cast iron bushed with gun metal and bolted to a foundation plate, arranged in the
engine room. The said shaft is prevented froin being lifted by a loose collar fixed
thereto by means of set screws, and working against the lower part of a bow bracket
fastened to the underside of the ship's deck, and made of cast iron or other snitable
metal.
Referring to fig. 5, N is the bracket made of cast iron and fitted with gun metal
bearings, one side of which has a gun metal collar designed to receive the thrust of
the worm O, which is keyed upon the worm shaft Q, fastened to the engine crank
shaft by means of two couplings.
The worm gears with the worm wheel made of cast steel and connected as shewn
with a clutch gear, bored to suit the upright shaft and working, by means of two
steel keys upon the shaft. This clutch gear is actuated by a lover of suitable
length.
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
The improved capstan, arranged, constructed, and operating substantially as and for
the purpose specified.
1
T1800
cu
rd day of June 1900,
HUGHES & SON,
5, Chancery Lane, London, W.C., Agents for the Applicants.
HUGHES & SON,
5, Chancery Lane, London, W.C., Agents for the Applicants.