Improvements in Disengaging Hooks.
Year: 1896

page_text: Date of Application, 20th May, 1890
Complete Specification Left, 26th Feb., 1897-Accepted, 10th Apr. 1897
Date
7000
Complete Specification Left, 26th Feb., 1897-Accepted, 10th Apr. 1807
Improvements in Disengaging Hooks.
I, JOHN РомROY HITCHCOCK, of 136 Great Saffron Hill, in the County of
Middlesex, and Clairville, Addiscombe, in the County of Surrey, Engineer do
hereby declare the nature of this invention to be as follows:-
This invention relates to disengaging hooks for various purposes including crane
and other lifting or hauling gear traces &c., and is here described as applied to a
harness trace and may be carried out in the following manner;-
The loop, ring or eye by which the hook is engaged is divided so as to leave the
fixed portion extending beyond the central line of the hook. The other portion of
the eye is pivotted upon the stem of the hook and meets the fixed portion so as to.
complete the circular eye the two preferably being half-checked into one another.
The movable portion is retained in its closed position by a spring catch, arranged
so as to be easily operated, and when closed and locked the eye is complete, but
should the horse fall, or for other reasons it be desirable to release the trace, or
weight required to be disengaged, the spring catch is withdrawn, the movable
portion of the eye turned open, and the disengagement effected. As the fixed
portion extends beyond the centre line, it takes the strain so that the movable portion
can be easily turned aside to open the eye.
Although I prefer the arrangement above described, I do not bind myself to
carry the fixed portion beyond the centre line.
This hook may be made of any suitable material and may be cast, forged or
otherwise constructed.
Deted this 26th day of May 1896.
BOULT & WADE,.
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Disengaging Hooks.
1, JOHN РOмROY HITCHCOCK of 136 Great Saffron Hill, in the County of
Middlesex and Clairville, Addiscombe in the County of Surrey, Engineer, 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 :-
This invention relates to disengaging hooks for various purposes including crane
and other lifting or hauling gear traces etc. and is here described as applied to a
harness trace and may be carried out in the following manner;
The loop, ring or eye by which the collar hook is engaged is divided so as to
leave the fixed portion extending beyond the central line of the hook. The other
portion of the eye is pivotted in the stem of the hook and meets the fixed portion
80 as to complete the circular eye, the two preferably being checked into one

page_text: another. The movable portion is retained in its closed position by a spring catch
arranged so as to be easily operated, and when closed and locked the eye is
complete, but should the horse fall, or for other reason it be desirable to release
the trace, or weight required to be disengaged, the spring catch is withdrawn, the
movable portion of the eye turned open, and the disengagement effected. As the
fixed portion extends beyond the centre line, it takes the strain so that the movable
portion can be easily turned aside to open the eye.
Although I prefer the arrangement above described, I do not bind myself to
carry the fixed portion-beyond the centre line.
This hook may be made of any suitable material and may be cast, forged, or
otherwise constructed.
In the accompanying drawings,
Figure 1 is an elevation of a disengaging device according to this invention
constructed for the use with harness traces.
Figure 2 is a view of the same at right angles to the position in which it is
shown in Figure 1.
Like letters indicate like parts throughout the drawings.
This device has a divided eye. A whereof the part A' is pivotted, as by the
screw B for instance, in a central slot in the stem A2 of the other part A. The
part A is shown closed against the part A' by dotted lines in Figure 1 and open
by, full lines; the heel A of the part A' is extended beyond the pivot B and
recessed at A', so that when the eye is closed the recessed portion of the heel will
be engaged by the tip C of a catch C, which is received in a hole A inade
lengthwise in the stem A. A spring C³ retained in the hole below. said catch
tends always to keep it protruded as shown in Figure 1. C³ are knobs on the end
of projection from the catch C' which extend through slots A10 in the stem A³ to
enable the catch C' to be retracted when the eye A is to be opened; these knobs Ca
are the only external projections on the device, all parts of the catch being
concealed. When the part A is moved into the position to close the eye, the
catch C will be thrust down by, the action of the heel A thereon against, the
resistance of the spring C. The stem A2 is extended at the lower end A to form
a jaw to retain a pin D to which the trace can be attached. The central
projection A of the eye enters a central recess A when the device is closed'; by
pivoting the part A' in a central slot and engaging it by the part A' with the
recess A great resistance to side stresses is afforded.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is ;-
1. A disengaging device with a divided eye or equivalent whereof the part Ais
pirotted to another part such as A' and controlled by a spring catch such as C¹
substantially as described.
2. A disengaging device of the kind described with a spring catch concealed
within the body of the same for the purpose specified.
3. The combination and arrangement of parts constituting a complete
disengaging device substantially as described and illustrated in the accompanying
drawings.
Dated this 26th da
DL1007
في
J. P. HITCHCOCK.
Boult & Wade.