AN IMPROVED CONSTRUCTION OF TENTERING MACHINE
Year: 1867

page_text: LETTERS PATENT to William Clissold, of Dudbridge Works, near Stroud,
in the County of Gloucester, Engineer, for the Invention of "AN
IMPROVED CONSTRUCTION OF TENTERING MACHINE."
Sealed the 19th July 1867, and dated the 12th February 1867.
PROVISIONAL SPECIFICATION left by the said William Clissold at the
Office of the Commissioners of Patents, with his Petition, on the
12th February 1867.
I, WILLIAM CLISSOLD, of Dudbridge Works, near Stroud, in the County of
Gloucester, Engineer, do hereby declare the nature of the said Invention for
"AN IMPROVED CONSTRUCTION OF TENTERING MACHINE," to be as follows:-
This Invention relates to a novel arrangement of tentering machine which
while it economises space will simplify the construction of such machinery
and facilitate the process of tentering and the removal therefrom of the cloth
after drying. The cloth or fabric to be dried in an extended state is fastened
at its selvages to tenter hooks set in helical coils of angle iron supported by
wheels or radial arms of cast iron; these wheels are mounted upon an axle
which turns in bearings in a rectangular frame which at the middle of its
length is secured by swivel pins to an outer or supporting frame fitted with
running wheels which traverse over guide rails for the purpose of facilitating
the removal of the tentering machine to and from the drying or stove room.

page_text: One of the wheels, to which are fixed the helical coils of angle iron, is
adjustable on its axle to suit various widths of cloth to be tentered. The axle
is made hollow to receive a tapped nut which is connected to the boss of the
wheel by means of a pin, a slot being cut in the hollow axle to allow of the
traverse of the coupling pin; through this tapped nut a screw passes, the
screw being mounted in the hollow axle, so that it shall be free to turn, but
shall have no endway motion; by turning therefore this screw by means of a
winch handle provided for the purpose the wheel with its tenter hooks may be
traversed along the axle to adjust its position relatively to the other tenter
wheel.
The cloth to be extended for drying is introduced to the machine through
forked guides, which guides are severally carried by elastic arms hinged to a
stationary horizontal fulcrum rod; this arrangement of the arms allows of one
of them being shifted laterally to suit various widths of cloth, and of both
being thrown. back clear of the machine when the whole length of cloth has
been placed on the tenter hooks and it is required to remove the machine to
the drying room; these elastic arms are each fitted with a bracket to carry
rotary guides or templets, which are small discs set round with pins; they
are mounted a little on the slant so as to take hold of the cloth, the selvage
of which is brought over the pins by means of fixed folders attached to the
brackets carrying the templets; the elastic arms carry also other brackets, on
which are mounted rotary brushes for pressing the list or selvage down upon
the tenter hooks; these brushes work at an angle so as to be clear of the
coil of the helix next above the one on which the list is being placed. By
reason of the forked guides being carried by the hinged elastic arms, as
explained, they will be free to drop down to the centre of the tenter wheels
As the cloth
and commence placing the cloth on the inner end of the helix,
winds on and is secured on the hooks the guides rise up with it, and when all
is wound on they can be lifted clear of the machine and fixed up overhead
out of the way till required again for another piece. The cloth is wound on
while the machine is horizontal, and by employing the two frames the helical
coil of stretched cloth can be turned upright or vertical to allow the heat to
pass or circulate freely through it. The inner frame carrying, the tenter
wheels may be made to turn over endwise while in the drying room in order
to prevent the water from running to the bottom list, which would be the
case if the coil of cloth were allowed to remain vertical without change of
Dosition.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent; filed
by the said William Clissold in the Great Seal Patent Office on the
12th August 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
CLISSOLD, of Dudbridge Works, near Stroud, in the County of Gloucester,
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twelfth day of February, in the year of our Lord One
thousand eight hundred and sixty-seven, in the thirtieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
William Clissold, Her. special licence that I, the said William Clissold, my
executors, administrators, and assigns, or such others as I, the said William
Clissold, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED CON-
STRUCTION OF TENTERING MACHINE," upon the condition (amongst others)
that I, the said William Clissold, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Clissold, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement, reference being had to the Drawing hereunto annexed, and to the
letters and figures marked thereon (that is to say) :-
This Invention relates to a novel arrangement of tentering machine, which
while it economises space will simplify the construction of such machinery and
facilitate the process of tentering woollen cloths and other fabrics for the
purpose of drying and stretching them. The cloth or fabric to be dried in an
extended state is fastened at its selvages to tenter hooks arranged in helical
coils as beretofore, and carried by coiled angle iron, which is itself supported
by wheels or radial arms of cast iron.
In the accompanying Drawing Fig. 1 is a plan view of the improved

page_text: tentering machine; Fig. 2 is a front elevation of the same, partly in section;
and Fig. 3 is a transverse section of the machine.
A, A', are a pair of wheels carrying on their inner face the helical coils of
tenter hooks. These wheels are mounted upon an axle B, which turns in
bearings in a rectangular frame of iron C; this frame at the middle of its
Jength is secured by swivel pins to an outer or supporting frame D of some-
what similar construction, but fitted with running wheels which traverse over
guide rails E for the purpose of facilitating the transport of the tentered cloth
while still extended to and from the drying or stove room. The wheel A¹ with
its tenter books fixed in helical coils of angle iron is adjustable on its axle to
adapt it to the various widths of cloth required to be tentered. The axle B is
made hollow to receive a tapped nut a, which is connected to the boss of the
wheel A' by means of a pin or screw, as shewn in Fig. 2, and in the detached
view Fig. 4, a slot being cut in the hollow axle to allow of the traverse of
this coupling pin or screw. Though the tapped nut a passes a regulating
screw at which is mounted in the hollow axle, so that it shall be free to turn,
but shall have no endway motion. Fitted to the squared head of the screw is
a winch handle a', by turning which the wheel with its tenter hooks may be
traversed along the axle to adjust its position relatively to the other tenter
wheel, and to the width of the fabric to be operated upon. The cloth to be
extended for drying is introduced to the machine by being first drawn over
a fixed bar and then drawn through forked guides F, F, which guides are
severally carried by elastic arms F1, F2, hinged to a stationary horizontal
fulcrum rod G, which is carried by any suitable bracket or other supports.
This arrangement of the arms allows of the arm F3 being shifted laterally to
a position corresponding to that of the wheel A¹ to suit various widths of cloth;
it allows also of both arms being thrown back clear of the machine when the
whole length of cloth has been placed on the tenter hooks, and it is required
to run the coiled fabric into the drying room. These elastic arms are each
fitted with a bracket to carry rotary templets, which are small discs 6 set round
with pins. These templets are mounted a little on the slant (see Figures 2,
3, and 5) so as to take hold of the cloth, the selvage of which is brought over
the pins by means of fixed folders c (one being shewn on an enlarged scale at
Fig. 5) attached to the brackets carrying the templets b; the elastic arms
carry also other brackets, on which are mounted conical rotary brushes d for
pressing the list or selvage down upon the tenter hooks; these brushes work
at an angle so as to be clear of the coil of the helix next above the one on
which the list is being placed. By reason of the forked guides being carried
by the hinged elastic arms, as explained, they will be free to drop down to the

page_text: centre of the tenter wheels and commence placing the cloth on the inner end
of the helix. When the cloth has been taken hold of by the tenter books a
slow rotary motion is given to the wheels by the attendant, and the cloth is
wound on (the rotary brush serving to press the cloth down to the bottom of
the points). As the winding continues the guides rise up with the cloth, and
when all is wound on they can be lifted clear of the machine and fixed up
overhead out of the way till required again for laying on another piece. At
the time of winding on the cloth the machine is in a horizontal position, and
before running it into the drying stove the requisite lateral tension is put on
the cloth by means of the screw and handle a¹, a. By employing the two
frames C and D the helical coil of stretched cloth can be turned upright or
vertical to allow the heat to pass or circulate freely through it. The inner
frame C carrying the tenter wheels may readily be made to turn over and over
endwise while in the drying room, in order to prevent the water from running
to the bottom list, which would be the case if the coil of cloth were allowed
to remain vertical without change of position.
Having now set forth the nature of my Invention of "An Improved
Construction of Tentering Machine," and explained the manner of carrying
the same into effect, I wish it to be understood that under the above in part
recited Letters Patent I claim, the combination of parts above described for
facilitating the process of tentering piece goods.
In witness whereof, I, the said William Clissold, have hereunto set my
hand and seal, the Tenth day of August, in the year of our Lord One
thousand eight hundred and sixty-seven.
WILLIAM CLISSOLD. (L.S.)