IMPROVEMENTS IN APPARATUS FOR CHECKING AND STOPPING STEEL WIRE HAWSERS AND CABLES
Year: 1879

page_text: it
LETTERS PATENT to William Munton Bullivant, of 59, Fenchurch Street, in
the City of London, for, the Invention of "IMPROVEMENTS IN APPARATUS FOR
CHECKING AND STOPPING STEEL WIRE HAWSERS AND CABLES."
"
Sealed the 26th August 1879, and dated the 7th March 1879.
PROVISIONAL SPECIFICATION left by the said William Munton Bullivant
at the Office of the Commissioners of Patents on the 7th March 1879.
WILLIAM MUNTON BULLIVANT, of 59; Fenchurch Street, in the City of London.
"IMPROVEMENTS IN APPARATUS FOR CHECKING AND STOPPING STEEL WIRE HAWSERS
AND CABLES."
This Invention has for its object improvements in apparatus for checking and
stopping steel wire hawsers and cables.
is
In the Specification of a former Patent granted to me, No. 3054, in the year
1874, I have described apparatus specially adapted for checking and stopping my
improved steel wire hawsers or cables, but applicable for use with other ropes.
This apparatus consists of a trough with parallel sides to be firmly bolted to the
deck of a vessel. The trough contains a block, which can be raised and lowered by
screws. The hawser or rope is placed within the trough beneath the block, and
to check and stop the hawser or rope the block is forced down upon it.
According to my present Invention I do away with one side of the trough, which
admits of the lawser or rope being easily placed in and removed from the apparatus.
I also force down the block by means of a hand wheel and worm or worm wheel
and eccentric.
For small sizes I operate the eccentrics' directly by means of a hand lever.
I also, except for small sizes, employ two nipping blocks in the same trough, one
behind the other, and actuated by separate hand wheels, worms, worm wheels, and
eccentrics. One block only may then be employed to check the run of the hawser
or rope, and the other made to nip it after it has been checked to ensure à secure
hold.
I provide a rise in the bottom of the trough between the blocks; and the hawser
or rope being deflected, in passing over this rise a frictional holding is thus obtained,
which operating in aid of a comparatively light nip will serve to retain the hawser
or rope against a heavy strain.
1

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Munton Bullivant in the Great Seal Patent Office on the
6th September 1879.
WILLIAM MUNTON BULLIVANT, of 59, Fenchurch Street, in the City of London.
"IMPROVEMENTS IN APPARATUS FOR CHECKING AND STOPPING STEEL WIRE HAWSERS
AND CABLES."
This Invention has for its object improvements in apparatus for checking and
stopping steel wire hawsers and cables.
In the Specification of a former Patent granted to me, No. 3054, in the year
1874, I have described apparatus specially adapted for checking and stopping my
improved steel wire hawsers or cables, but applicable for use with other ropes.
This apparatus consists of a trough with parallel sides to be firmly bolted to the
deck of a vessel. The trough contains a block, which can be raised and lowered by
screws. The hawser or rope is placed within the trough beneath the block, and to
check and stop the hawser or rope the block is forced down upon it.
'
According to my present Invention I do away with one side of the trough, which
admits of the hawser or rope being easily placed in and removed from the apparatus.
I also force down the block by means of a hand wheel and worm, a worm wheel
and eccentric. For small sizes I operate the eccentric directly by means of a hand
lever.
I also, except for small sizes, employ two nipping blocks in the same trough, one
behind the other, and actuated by separate hand wheels, worms, worm wheels, and
eccentrics. One block only may then be employed to check the run of the hawser
or rope, and the other made to nip it after it has been checked to ensure a secure
hold.
I provide a rise in the bottom of the trough between the blocks; and the hawser
or rope being deflected, in passing over this rise a frictional holding is thus obtained,
which operating in aid of a comparatively light nip will serve to retain the hawser
or rope against a heavy strain.
The Drawing hereunto annexed shows an apparatus having the several improve-
ments above described combined in it.
Figure 1 is a side view partly in section, and Figure 2 a transverse section of the
apparatus.
A is the trough, open on one side; B,B, are the nipping blocks forced downwards
by eccentrics C, C, which are formed at one side of worm wheels D, D. The
eccentrics fit into slides E, which can move horizontally to and fro in slots in the
nipping blocks, so that the nipping blocks can be moved vertically up and down
by the eccentrics without being moved horizontally. The nipping blocks are
prevented from moving sidewise by vertical flanges at their back entering corre-
sponding slots in the frame. F, F, are studs, upon which the eccentrics and worm
wheels turn; G, G, are worms, which gear with the worm wheels, and which can
be turned by hand wheels H, H, fixed on their spindles; I is a rise in the bottom
of the trough between the blocks. When both nipping blocks are pressed down-
wards on to the hawser or rope the hawser or rope is deflected from a straight line,
and less pressure of the nipping blocks is required to hold it. As before stated the
apparatus may for small sizes be made with one nipping block only, and in this
case the eccentric used for forcing down the nipping block may be turned by a lever
handle upon it.
Having thus described the nature of my Invention and the manner of performing
the same, I would have it understood that I claim,―
First. The combination of apparatus for checking and stopping steel wire hawsers
and cables, substantially as hereinbefore described and illustrated in the Drawings
annexed.
Second. Forming the trough of the apparatus open on one side, as described.

page_text: Third. Forcing down the nipping blocks of the apparatus by eccentrics turned by
a hand wheel and worm and worm wheel.
Fourth. Providing a rise in the bottom of the trough of the apparatus, so that
the hawser is deflected as it passes over the rise.
In witness whereof, I, the said William Munton Bullivant, have hereunto
set my hand and seal, this Sixth day of September, in the year of our
Lord One thousand eight hundred and seventy nine.
W. M. BULLIVANT. (L.S.)