Improved Rope Gripping Appliance for Rope Haulage.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improved Rope Gripping Appliance for Rope Haulage.
I, CHARLES DENTON ABEL, of Birkbeck Bank Chambers, Southampton Buildings,
in the County of London, Consulting Engineer and Chartered Patent Agent, do
hereby declare the nature of this invention (which has been communicated to me
from abroad by Adolf Bleichert and Co., of Leipzig-Gohlis, Germany) to be as
follows:-
This invention relates to an improved rope gripping appliance for trucks and
other vehicles propelled by hauling ropes, which I will describe with reference
to the accompanying drawing, in which
Figures 1 and 2 shew respectively a front view and cross section of one arrange-
ment. It consists firstly of a fork A the one limb of which is extended up beyond
the other one, and constitutes the slightly hook shaped gripping cheek B, and
secondly, of the roller C, which can revolve loosely upon a pin D carried by the
fork.
The roller C is formed with an excentric periphery and the single flange thereof
situated opposite the cheek B, is formed with an inclined face. In order to pre-
vent the roller from offering more resistance to rotation than is due to friction,
the excentricity of the pulley is completely balanced by the addition of weight as
indicated.
When at the place where a truck is to be coupled to the hauling rope, this is
introduced between the fixed gripping cheek B and moveable one C, which is
easily done owing to the wide opening between these parts at top, the rope in
moving in the direction of the arrow Figure 1 will by its frictional contact with
the roller C, rotate this, whereby the inclined face of the flange will be made to
push the rope towards the fixed cheek B and the excentric periphery of the roller
will at the same time lift up the rope, so that this will be moved laterally in the
slanting direction indicated by the arrow Figure 2 until it enters the hollow of
the cheek B, in which it will then be gripped firmly by the periphery of the roller.
The grip thus èxerted upon the rope between the fixed and loose jaws will be
sufficiently powerful to enable the rope to haul the truck up very steep inclines,
without the rope being in any way injured or deformed by such grip.
If the roller should occupy an unfavourable position when required to come into
action, so that the rope cannot enter properly between it and the fixed jaw, the
travelling rope in coming in contact with the roller will automatically turn so as
to bring it into proper position for the rope to enter, and when this has been
effected, the grip will at once be effected as above described.
The grip is released at the required place by imparting to the truck at such
place a greater speed than that of the rope; the roller C is thereby made to turn
backwards and consequently its gripping surfaces recede from the jaw B, so that
the rope is set free and is then moved laterally out of the jaws.
In order that the release of the grip may be readily effected even after the

page_text: strongest pressure, the fixed jaw may also be made capable of moving between
certain limits; Figures 3 and 4 shew a front view and.section of such an arrange-
ment.
The jaw E is in this case not fixed to the limb of the fork A but is carried
by an extended boss mounted loose on the pin D; the boss of the excentric roller C
being mounted loose on the boss of E, and held thereon by a screwed collar F
serving as abutment for the roller. The turning motion of the jaw E is limited
either by two stops G G₁ projecting from. E on each side of the fork A, or by any
other means.
On the two jaws being put in action by the rope, E will always be brought into
the one end position by the pull of the rope.
If for releasing the grip the truck be moved in advance of the rope, both the
jaws E and C will first move backward simultaneously without having to overcome
any frictional resistance either of the jaws, against the ropeitor of the roller C
against the collar F. By such motion the gripping device will already have
loosened its strong grip somewhat by the time the jaw E-arrives at its opposite
end position, and the roller C, being already.in motion, will reality overcome the
friction in continuing to turn so as to open the jaws completely and allow the
rope to escape.
F..
The gripping appliance will operate with equal efficiency in either direction, as
with a sufficient change of incline of the tram, the cheek E and roller C will
automatically move over from the one end position to the other and thus will
operate in the opposite direction."
The fork A is suitably formed with a prismatic lower end for enabling it to be
readily attached to and removed from the trucks by fitting into a socket thereon.
Or the fork can be permanently. fixed to the truck, as shewn in front and side
view at Figures 5 and 6..
Dated this 19th day of August 1898.
ABEL & IMRAY.
Agents for the Applicant.
либ аррнансо гог горе пита.
I, CHARLES DENTON ABEL, of Birkbeck Bank Chambers, Southampton Buildings,
in the County of London, Consulting Engineer and Chartered Patent Agent, do
hereby declare the nature of this invention (as communicated to me from abroad
by Adolf Bleichert and Co., of Leipzig-Gohlis, Germany), and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
'
This invention relates to an improved rope gripping appliance for trucks and
other vehicles propelled by hauling ropes, which I will describe with reference to
the drawing accompanying my Provisional Specification; in which Figs. 1 and 2
shew respectively a front view and cross section of one arrangement. It consists
firstly of a fork Å the one limb of which is extended up beyond the other one, and
constitutes the slightly hook shaped gripping cheek B, and secondly, of the roller C,
which can revolve loosely upon a pin D carried by the fork..
The roller C is formed with an excentric periphery and the single flange thereof
situated opposite the check B, is formed with an inclined face. In order to pre-
vent the roller from offering more resistance to rotation than is due to friction, the

page_text: excentricity of the pulley is completely balanced by the addition of weight as
indicated.
When, at the place where a truck is to be coupled to the hauling rope, this is
introduced between the fixed gripping cheek B and the moveable one C, which is
easily done owing to the wide opening between these parts at top; the rope in
moving in the direction of the arrow Fig. 1 will by its frictional contact with the
roller C, rotate this, whereby the inclined face of the flange will be made to push
the rope towards the fixed cheek B and the excentric periphery of the roller will
at the same time lift up the rope, so that this will be moved laterally in the slanting
direction indicated by the arrow Fig. 2 until it enters the hollow of the cheek B,
in which it will then be gripped firmly by the periphery of the roller.
The grip thus exerted upon the rope between the fixed and loose jaws will be
sufficiently powerful to enable the rope to haul the truck up very steep inclines,
without the rope being in any way injured or deformed by such grip.
If the roller should occupy an unfavourable position when required to come into
action, so that the rope cannot enter properly between it and the fixed jaw, the
travelling rope in coming in contact with the roller will automatically turn it so
as to bring it into proper position for the rope to enter, and when this has been
effected, the grip will at once be effected as above described.
The grip is released at the required place by imparting to the truck at such
place a greater speed than that of the rope; the roller C is thereby made to turn
backwards and consequently its gripping surfaces recede from the jaw B, so that
the rope is set free and is then moved laterally out of the jaws.
In order that the release of the grip may be readily effected even after the
strongest pressure, the fixed jaw may also be made capable of moving between
certain limits; Figs. 3 and 4 shew a front view and section of such an arrangement.
The jaw E is in this case not fixed to the limb of the fork A but is carried by an
extended boss mounted loose on the pin D, the boss of the excentric roller C being
mounted loose on the boss of E, and held thereon by a screwed collar F serving as
abutment for the roller. The turning motion of the jaw E is limited either by
two stops G G projecting from E on each side of the fork A, or by any other means.
On the two jaws being put in action by the rope, E will always be brought into
the one end position by the pull of the rope.
If for releasing the grip the truck be moved in advance of the rope, both the
jaws E and C will first move backward simultaneously without having to overcome
any frictional resistance either of the jaws against the rope or of the roller C
against the collar F. By such motion the gripping device will already have
loosened its strong grip somewhat by the time the jaw E arrives at its opposite
end position, and the roller C, being already in motion, will readily overcome the
friction in continuing to turn so as to open the jaws completely and allow the rope.
to escape.
The gripping appliance will operate with equal efficiency in either direction, as
with a sufficient change of incline of the tram, the cheek E and roller C will
automatically move over from the one end position to the other and thus will
operate in the opposite direction.
The fork A is suitably formed with a prismatic lower end for enabling it to be
readily attached to and removed from the trucks by fitting into a socket thercon.
Or the fork can be permanently fixed to the truck, as shewn in front and side
view at Figs. 5 and 6.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is :-
1. A rope gripping appliance for rope haulage consisting of a roller with excen-
tric periphery and inclined flange operating in combination with a fixed gripping
cheek in such manner that on the roller being rotated by the hauling rope, its
excentric periphery and inclined flange are caused to approach the fixed cheek so
as to grip the rope firmly between the two, substantially as described.

page_text: 2. In the rope gripping appliance referred to in the first claim, arranging the
gripping cheek so as to be capable of turning within certain limits on the same
axis as the roller, for facilitating the releasing of the grip on the hauling rope
when the truck is propelled quicker than the rope, substantially as described.
Dated this 3rd day of March 1899.
ABEL & IMRAY,
Agents for the Applicant.