Year: 1887

page_text: 1, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E. 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 :-
The object of the invention is to provide a cheap and simple device whereby a grip
can be secured on a rope or wire so that a strain may be readily placed on the same;
and it consists, essentially, of pieces of suitable shaped metal, or other rigid material,
through which a piece of marling or tarred rope or chain is passed and secured at
both ends to the straining piece after encircling with a series of loops the rope or
other article to be gripped, so that when a strain is put on the straining piece the
loops encircling the rope to be gripped will tighten up in a uniform manner, and
firmly hold the rope to be strained, without any possibility of slipping or of injuring
the rope or wire so clutched, as hereinafter more particularly described.
Fig. 1 is a perspective view of this improved gripping device.
Fig. 2 is an alternative form of the same.
Fig. 3 is a detail of piece H.
In the drawing, like letters of reference indicate similar parts in the different
figures.
In figure 1, A is the portion of the rope or wire on which it is desired to place a
strain. B is a metal plate preferably of malleable cast iron, and provided on one side

page_text: with a uniform series of hook shaped projections &, the ends of which are slightly
turned to one side, so that when the device is in operation, the rope or piece of
marling or chain C, which is designed to be looped over the rope A, may fit better on
the beds formed by their projections b. d are holes formed or punched in the metal
plate B, opposite to and corresponding in number with the hook shaped projections b.
These holes are made sufficiently large to permit of the rope or chain working easily
through them, and are bevelled off at the edges to prevent the rope cutting. Dis
what is called a $:
straining piece," pierced with the same number of holes as in
plate B. The number of holes through which the marling or gripping rope or chain C,
is passed, as well as the number of hook shaped projections, can be greater or less
in number than shown, as may be desired. On the end of the straining piece D,
there is a book or ring E, designed to receive and hold the hook of a luff tackle
purchase, or other device by means of which power is applied to the straining piece D.
The rope or marling or chain is first passed through hole No. 1 in the straining piece,
the end being knotted so as not to draw through the hole it is then passed through
holes 2 and 3 in plate B, then through holes and 5 in the straining piece D, and
so on until all the holes in the two pieces are threaded by the marling or chain, and
the other end of the rope knotted at hole 12 to prevent it slipping through. Of
course it is immaterial at which end of the pieces he threading is commenced. To
grip the rope the plate B is placed against the article or rope to be gripped, the
straining piece is then passed round rope A, and each row of the piece of marling
which has been passed alternately from the straining piece D to the plate B, is placed
in its appropriate hed over the hooked projections b. in the plate B. When a strain is
put on the straining piece D, the loops of the marling or chain tighten up on the
rope A in a uniform manner, and the greater the pull on the straining piece D, the
stronger grip will the loops have on the rope A.
:
Fig. 2 is an alternative form by which the same result may be attained, but in a
less simple manner. In this case instead of plate B, there are two separate pieces G
and H, with T shaped projections formed at one end of. each, and shoulders & cut
out of the other, and pierced with a corresponding series of holes m. The pieces G
and H, being separated, the rope A is passed between them, and the pieces G and H
fitted together the shoulders engaging against the T shaped projections on the
respective pieces. The drawings clearly indicate the manner in which the marling
or chain is threaded, and it is obvious that when a strain is put on the straining piece
piece D, that the loops are tightened up on the rope A, which becomes firmly gripped
in a manner similar to that shown under the other figure.
Fig. 3 is a detail of piece H, the other piece G being similar in form, and when
fitted on piece H, being end for end. In this view the T shaped projections at the end
is shown, as well as the notch forming shoulder k, at the other.
This gripping device is peculiarly adapted for getting a strain on ropes or standing
rigging, whether made of rope or wire, or may be utilized in taking up the slack in
wires of large size, such as those used for electric lighting, &c. When used for
taking up the slack of wire, a cross bar O may be cast on the marling piece, so as to
afford a better hold.
Having now particularly described and ascertained the nature of the said
invention as communicated to me by my foreign correspon lent and in what manner
the same is to be performed, I declare that what I claim is :-
1. A device wherein a piece of rope or marling or chain may be passed through a
suitably shaped plate and straining piece to which it is attached, in such a manner as
not to draw out when a strain is put on the straining piece, the loops of marling or
chain which encircle the rope to be gripped, tightening up in a uniform manner, and
firmly binding the plate to the rope, substantially as described and for the purpose
specified.
2. A rope grip consisting of pieces of suitably shaped metal, or other rigid material,
through which a piece of marling or rope or chain is passed and secured thereto, and
forming a series of loops encircling the rope to be gripped,. in such a manner that

page_text: when a strain is put on the straining piece the loops tighten up in a uniform manner
and firmly grip the rope to be strained, pressing it against a rigid plate, substantially
as described, and for the purpose specified.
3. A rope grip formned by a series of running loops of marling or tarred rope or
chain passed over the material to be gripped and through suitably shaped pieces of
metal, or other rigid material, the loops being designed to tighten up in a uniform
manner when a strain is put on one of the pieces forming a straining piece,
substantially as specified.
4. The combination with rope A, of plate B, having hooked projections b, and
holes d, the straining piece D, provided with ring E, and holes e, and the rope or marling
or chain C, secured to said plate B, and straining piece D, substantially as described,
and for the purpose specified.
5. The combination with the rope A, of the pieces G and H, having holes m,
Tshaped projections, and notched so as to form shoulders k, the rope or marling or
chain C, secured to said pieces G and E, and the straining piece D, having holes e,
and ring E, substantially as described, and for the purpose specified.
Dated this 6th day of December 1887.
W. P. THOMPSON & BOULT,
Agents.