Improvements in Rope Compressors or Apparatus for Retaining and Releasing Hawsers or other Ropes.
Year: 1891

page_text: Date of Application, 3rd Lec., 1891
Complete Specification Left, 5th Sept., 1892-Accepted: 15th Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Rope Compressors or Apparatus for Retaining and
Releasing Hawsers or other Ropes.
I MARK ARCHER of Farnacres Ravensworth Gatesbead-on-Tyne in the County
of Durham Engineer do hereby declare the nature of this invention to be as
follows:-
:-
My invention has for its object to provide a rope compressor having great power
combined with rapid gripping and releasing of the rope.
According to my invention I mount a pair of rollers in supports or bearings and
by suitable gearing I cause the rollers to rotate in opposite directions so that they
grip between them the rope to be held. I may mount the rollers in partly circular
jaws which may be adjustable and I provide the said rollers with grooves to receive
the rope. The gear by which the rollers are rotated may consist of worm teeth
formed on the rollers with which teeth worms upon a shaft beneath the rollers
engage the said worms being right and left banded so as to simultaneously rotate
the rollers in opposite directions. Or I may employ other suitable gear such as
levers or combinations of levers for giving the requisite rotatory motion to the
rollers.
Dated this 3rd day of December 1891
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Rope Compressors or Apparatus for Retaining and
Releasing Hawsers or other Ropes.
I MARK ARCHER of Farnacres, Ravensworth, Gateshead-on-Tyne in the County
of Durham Engineer do hereby declare the nature of the said invention and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
My invention has for its object to provide a rope compressor having great power
combined with rapid gripping and releasing of the rope.
According to my invention I mount a pair of rollers in supports or bearings and
by suitable gearing I cause the rollers to rotate in opposite directions so that they
grip between them the rope to be held.
The accompanying drawings illustrate what I consider the best and simplest
means for carrying my invention into effect but I do not limit myself to the precise
details of mechanism for operating the rollers which I have illustrated. Referring
first to Figures 1, 2, and 3.
'
Figure 1 is an end elevation-Figure 2 is a side elevation and Figure is a
plan of an arrangement of apparatus according to my invention. I mount the
axles of the rollers A in bearings B formed on or secured to the base plate B'.
The said rollers A have in them grooves a to receive the rope. The gear
by which the rollers A are rotated in this arrangement consists of worm-
teeth a² as formed on or secured to each of the rollers A with which teeth engage
worms upon a shaft C turning in bearings and situated beneath the rollers A
the said worms being right and left handed so as to simultaneously rotate the
rollers in opposite directions. The dotted lines in Figure 1 (ata) shew the position
of the grooves a before the grip is put on the rope. The rope is put in the grooves
when they are in this position and then by rotating the shaft C by means of the

page_text: wheel c (omitted from Figure 2) the worms 2 by acting on the teeth a² a³ cause
the rollers to rotate inwards and the grooves a take the position shewn in full lines
and hold the rope firmly.
Figures 45 and 6 are respectively an end elevation a side elevation and a plan,
of an arrangement of gripping grooved rollers as shewn in Figures 1, 2 and 3 but
they are operated by means of a lever D (shewn in Figure 4) inserted into a hole e
in the one roller or in a projection thereon. There may be a similar hole (2) in
the other roller or in a projection thereon so that that also may be operated. Fis
a ratchet wheel formed on or secured to one of the rollers and fis a dog or pawl
centred to the foundation or bearing engaging with the said ratchet wheel for
retaining the rollers in their gripping position. The motion is conveyed from one
roller to the other by a nib or projection a' on one roller engaging with a recess a
in the other roller. Each roller may however when each are operated by a lever
be provided with a ratchet wheel and pawl or dog.
Figures 7, 8 and 9 are respectively an end elevation a side elevation and a
plan of an arrangement like Figures 1, 2 and 3 except that only one of the rollers
is provided with worm teeth (a) and the shaft C with but one worm ³ to engage
therewith the other roller being operated and retained in position by means of a
nib or projection at a and recess a³ as in Figures 4, 5 and 6.
In place of the roller axles being mounted in bearings B as shewn the rollers
may be held in partly circular jaws B as shewn in end elevation side elevation and
plan in Figures 10 11 and 12 and one or both of these jaws may be secured to the
foundation B so as to be removeable or adjustable. This is shewn as being effected
by making one of the jaws capable of sliding in retaining grooves in the foundation
plate and adjusting it by the screws botherwise this arrangement is like that shewn
in Figures 1, 2 and 3.
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 rope compressor or apparatus for retaining and releasing hawsers and other
ropes consisting of a pair of grooved rollers so mounted and provided with means
for partly rotating them that they can be turned inwards to grip and hold the rope
between them substantially as hereinbefore described.
2. The several arrangements of rope compressors or retainers constructed
substantially as hereinbefore described and shewn respectively in Figures 1, 2 and 3,
Figures 4, 5 and 6 Figures 7, 8 and 9 and Figures 10, 11, and 12 of the accompanying
drawings.
Dated this 5th day of September 1892.
J. H. JOHNSON & Co.,
Agents.