Improved Sorew Grip for Rope Haulage.
Year: 1893

page_text: Date of Application, 11th Feb., 1893
Complete Specification Left, 15th Aug., 1893-Accepted, 3rd Feb., 1894
PROVISIONAL SPECIFICATION.
Improved Sorew Grip for Rope Haulage.
JOHN TELFER Ship Surveyor 3 Brackenthwaite Whitehaven Cumberland do
hereby declare the nature of this invention to be as follows:-
:-
This improved screw grip is made of strong iron or steel and constructed with
grove at bottom to receive wire rope, and a strong quick screw passing through
studs in centre, with a press at end of screw with grove to fit wire rope, when screwed
taut nips the rope so firmly, that from 8 to 10 bogies of coal may be connected to
each grip, this grip when connected between two bogies which keeps it in proper
position for connecting to endless wire rope, the same can be connected or
disconnected by simply turning handle attached to top of screw.
Dated this 10th day of February 1893
Improved Screw Grip for Rope Haulage.
JOHN TELFER Ship Surveyor 3 Brackenthwaite Whitehaven Cumberland
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:-
Improved screw grip for rope haulage.
It object is to be able to connect and disconnect an endless wire rope whilst in
motion. Its screw makes it safe and reliable for all wire rope haulage, it is equal
to bear a strain on any gradient, it is simple to connect and disconnect, the rope can
be freed instantly by lifting pawl c. The grip is placed on a coupling rod to two
bogies as shown on Sheet 4, drawing hereunto annexed, the object in placing the
grip between two bogies is to allow it always to hang in the centre between the
bogies and parallel above the rope. The connecting rod which is made of strong
iron or steel passes through the head of the grip and allows the grip to move to
right or left and connects to studs on each bogie as shown on Sheet 4. drawing. No
fear need be entertained in regard to rounding curves or coming in contact with
guide rollers on the road as the grip noves to the right or left when meeting any
impediment, and when the grip comes in contact with a guide roller in the centre of
the road it raises the connecting rod upwards on the studs on the bogies until the
obstruction is cleared when it falls back into its natural position again.
The grip can also be connected with hook in place of the connecting rod if
necessary for light work when required, see Sheet 5. drawing.
The work of connecting and disconnecting while safe is so simple that it can be
done by one of the youngest boys in the mine.
Sheet 1. shows front view of improved screw grip connected to wire rope, also
shows connecting rod through head of grip.
a shows handle on head of screw.
6 shows connecting rod for connecting between two bogies.
cshows trigger pawl to hold and free catch tumbler.
d shows screw for screwing the press down upon the rope.
e shows catch tumbler for holding bottom of grip in position.

page_text: f shows the press attached to bottom of screw, this press travels between grooves
on each side of grip, which rises up or down as required to nip the rope.
9 shows the bottom of grip which is hinged so as to open and shut to admit &
free the rope as required.
h shows the rope nipped under press.
Sheet 2. shows side view of grip when screwed down upon the rope.
This drawing shows the working parts of the grip. You will observe the grip
is now locked with pawl cover head of catch tumbler e and the rope can be freed
instantly by lifting pawl c.
Sheet 3. drawing shows side view of grip open after pawl c has been lifted and
the rope set free, the grip is now in position to receive the rope again, all that is
required to connect the rope is simply to put the rope in bottom of grip g then lift
bottom g up and in so doing it will strike catch tumbler e and catch tumbler e will
strike pawl which will fall over head of catch tumbler e then the bottom is
instantly locked and cannot be unlocked without lifting pawl c when locked the rope
travels through until all is ready then screw down the press with handle a and nip.
the rope as required.
Sheet 4. drawing, shows the grip connected between two bogies and to endless
rope. I prefer the grip connected between two bogies, for heavy haulage. Say
from 12 to 16 bogies of coal to one grip, of course the grip can be made any size
to carry any number of bogies. This grip can be connected to bogies in many
ways, to suit the lead of rope, ground, overhead or side haulage, it matters not
which way the rope travels, I show on Sheet 5. drawing that the grip can be used
with a hook equally as well to end of bogie if required. This improved screw
grip will be found invaluable for mine or surface haulage or wherever the endless
rope is in use.
Having now particularly described and ascertained the nature of my invention
and in what manner the same is to be performed, I declare that I claim
The whole construction of my improved screw grip for rope haulage.
14th day of August 1893.
JOHN TELFER.