IMPROVEMENTS IN THE 'JACKS' AND JACK HOOKS OF JACQUARD APPARATUS
Year: 1876

page_text: LETTERS PATENT to John Broadhead, of Shay Clough, Austonley, near Holm-
firth, in the County of York, Farmer, for the Invention of "IMPROVEMENTS
IN THE 'JACKS' AND JACK HOOKS OF JACQUARD APPARATUS.”
Sealed the 1st August 1876, and dated the 3rd February 1876
PROVISIONAL SPECIFICATION left by the said John Broadhead at the Office
of the Commissioners of Patents on the 3rd February 1876.
JOHN BROADHEAD, of Shay Clough, Austonley, near Holmfirth, in the County of
York, Farner. "IMPROVEMENTS IN THE JACKS AND JACK HOOKS OF JACQUARD
APPARATUS."
"
This Invention relates to apparatus employed in looms for weaving, and the
improvements consists in dispensing with the rivets hitherto used for connecting
the "jacks" and "jack hooks," thereby avoiding the frequent damage done to the
fabric when weaving by such rivets working loose and allowing the said "jacks
and hooks to become disconnected. For this purpose I form in the end of the
jack hook a slot hole, and bend or form a hook at the end of the other part to fit
into the slot hole. This bent or hooked end is placed within the slot, and thereby
forms a connection capable of working like a hinge or joint. This mode of con-
nection admits of the sides of the jack hooks being made perfectly smooth, and
allows them to work freely when placed close together..
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"
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Broadhead in the Great Seal Patent Office on the 3rd August
1876.
JOHN BROADHEAD, of Shay Clough, Austonley, near Holmfirth, in the County of
York, Farmer.
;
"IMPROVEMENTS IN THE JACKS AND JACK HOOKS' OF JACQUARD
APPARATUS."
This Invention relates to apparatus employed in looms for weaving, and the
improvements consist in dispensing with the rivets hitherto used for connecting the
"jacks" and "jack hooks," thereby avoiding the frequent damage done to the fabric
when weaving by such rivets working loose and allowing the said jacks and rods to
[Price 4d.]

page_text: become disconnected. For this purpose I form in the end of the jack a slot hole
and bend or form a hook at the end of the other part to fit into the slot hole. This
bent or hooked end is placed within the slot, and thereby forms a connection capable
of working like a hinge or joint. This mode of connection admits of the sides of
the jack hooks being made perfectly smooth, and allows them to work freely when
placed close together.
This Invention will be readily understood on reference to the accompanying
Sheet of Drawings, wherein Fig. 1 is a front view of the apparatus shewing my
improvements. A is the "jack" with the slot or opening at one end, and B is the
jack hook," with one end bent in the form of a hook, and inserted into the slot or
opening of the "jack," thereby making a connection or joint capable of working
like a hinge. Fig. 2 shews a detailed section of the joint, and Fig. 3 a plan of
same. It will at once be seen that when the said "jack" and "jack hooks" are
coupled together in the manner shewn in the Drawings they cannot possibly work
loose or become disconnected, as in the case when rivets and pins are used.
By dispensing with the rivets and pins and their projecting heads this method of
fastening allows the "jacks" and rods to be brought closer together and to work
freely.
Having thus shewn and described how this Invention may be worked and put
into practical operation I would have it understood that I do not bind myself to
make the slot in the "jack," as the construction of the joint may be vice versa from
what is shewn and described in the Drawings annexed.
In witness whereof, I, the said John Broadhead, have hereunto set my hand
and seal, this Twelfth day of July, in the year of our Lord One thousand
Witness,
J. W. TASKER.
JOHN BROADHEAD. (L.S.)