Improvements in Pulley Block Tackle.
Year: 1890

page_text: Date of Application, 21st Mar., 1850
Complete Specification Left, 10th June, 1890-Accepted, 24th July, 1890
PROVISIONAL SPECIFICATION.
Improvements in Pulley Block Tackle.
We CHARLES GIBSON and ARTHUR HEBDITCH LILLEY of the firm of Gibson &
Lilley of Metropolitan Chambers 63 Queen Victoria Street in the City of London
Engineers do hereby declare the nature of this invention to be as follows:-
It is well known that great difficulties are experienced with what are commonly
known as a block and tackle or "fall and tackle" (especially with double and treble
blocks with a new piece of rope therein) by reason of the twisting of the rope-or
rather its efforts to untwist-causing the rope to entangle and otherwise not work
freely and hitherto the usual remedy (which has only been of a temporary nature)
has been to release one end of said rope for a time and let the twist run out and then
secure said rope end again in its place.
Now this invention is designed to act automatically to prevent or obviate the above
drawbacks and difficulties with such "fall and tackle" and it consists in mounting and
arranging the eye or hook etc.-which receives the fixed end of the rope on the block
or pulley on a swivel joint so that such eye or hook etcetera can freely revolve and
thus automatically allow the twist to run off of itself.
If the fixed end of the rope is attached to a beam or the floor etcetera instead of to
the block as above-then the eye or hook in the floor or beam etcetera to receive same
would be on a swivel joint so as to act as before described.
A stop catch or fastening of any suitable form may be provided ready to be applied
to prevent the swivel joint from moving when desired.
DL: alı
1000
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Pulley Block Tackle.
We CHARLES GIBSON and ARTHUR HEBDITCH LALLEY of the firm of Gibson &
Lilley of Metropolitan Chambers 63 Queen Victoria Street in the City of London
Engineers 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 :-
:-
"
It is well known that great difficulties are experienced with what are commonly
known as a block and tackle or "fall and tackle (especially with double and treble
blocks with a new piece of "Manilla or hemp rope therein) by reason of the twisting
of the fibrous rope-or rather its efforts to untwist-causing such rope to entangle
ог "kink" and otherwise not work freely and hitherto the usual remedy (which has
only been of a temporary nature) has been to release one end of said rope for a time
and thus allow the rope to untwist itself as much as it wants (that is let some of the
twist run out) and then secure said rope end again in its place.
Now this invention is designed to act automatically to obviate the above drawbacks
and difficulties with such "fall and tackle" and it consists in mounting and arranging
the eye or hooks etcetera-which receives the fixed end of the rope on the block or
pulley on a swivel joint so that with such eye or hook etcetera can freely revolve and
thus automatically allow the said twist to run off of itself.
If the fixed end of the rope is attached to a beam or the floor etcetera instead of to
the block as above-then the eye or hook in the floor or beam etcetera to receive same
would be on a swivel joint so as to act as before described.

page_text: A stop catch or fastening of any suitable form may be provided ready to be applied
to prevent the swivel joint from moving when desired.
And in order that our present invention may be easily understood and readily carried
into practice we will proceed to further describe same with reference to the accom-
panying sheet of drawings.
Figure 1 is an edge view in elevation of a block baving our said improvements
applied thereto.
Figure 2 is a side view of same in elevation.
a is the eye or metal loop to which one end of the rope is fixed.
is the fixed part of the swivel joint which part is secured on the block.
c is the pin on which the part a turns freely round and which secures the said part a
to the part b.
d is the screw nut or washer on pin c.
e is a loose pin placed in position to act as a stop catch or fastening to prevent the
swivel from turning if so required and is removable at pleasure.
It will be obvious that this swivel joint may be arranged and mounted as previously
described or in any other suitable manner on either the top or the bottom of the
"block " as desired.
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 :-
1. The application of a swivel jointed hook or eye or equivalent to a
"block for a
"fall and tackle" or the like gear substantially as and for the purposes herein before
set forth.
دو
2. A block and tackle
"
or a "fall and tackle" or the like gear in which one of
its blocks has arranged and mounted thereon a hook or eye or equivalent device (to
which one end of the rope is fixed) free to turn on a swivel joint substantially as and
for the purposes herein before set forth.
Dated this 10th day of June 1900
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Patentees.
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Patentees.