IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1871

page_text: LETTERS PATENT to John Carter Ramsden, of Halifax, in the County
of York, Silk Manufacturer, for the Invention of "IMPROVEMENTS IN
LOOMS FOR WEAVING."
Sealed the 16th May 1871, and dated the 4th March 1871.
PROVISIONAL SPECIFICATION left by the said John Carter Ramsden
at the Office of the Commissioners of Patents, with his Petition,
on the 4th March 1871.
I, JOHN CARTER RAMSDEN, of Halifax, in the County of York,
Silk Manufacturer, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN LOOMS FOR WEAVING," to be as follows :—
The Invention has for its object improvements upon an Invention for
which Letters Patent were granted to me, dated March 15th, 1870,
No. 761, and relates to improvements in the mode of actuating the
rotary shuttle boxes of looms.
For this purpose according to my present Invention I dispense with
the cylinders containing the helical grooves and with the piston rods
working within such cylinders, as also with the connecting rod which

page_text: connects the two pistons together, but I retain the other parts described
in the Specification of the aforesaid Letters Patent.
The mode in which I propose to actuate the rotary shuttle boxes is
as follows: Instead of the bottom grooved cylinder formerly employed,
and which was placed opposite the fulcrum of the lathe sword, I employ i
a shaft, on the end of which I fix a pulley, and instead of the grooved
cylinder placed inside the shuttle box as formerly I fix another pulley
on the axis of the shuttle box outside the framing carrying the shuttle
box. Round these two pulleys I place a strap, but as the strap of itself
would not be sufficiently certain in its actiou I fix a stud or pin in the 1
face of each pulley, and connect the two pulleys together by a rod
working upon such studs or pins.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Carter Ramsilen in the Great Seal Patent
Office on the 4th September 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
CARTER RAMSDEN, of Halifax, in the County of York, Silk Manufacturer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourth day of March, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fourth year of Her reign, did for Herself, Her heirs and successors,
give and grant unto me, the said John Carter Ramsden, Her special
licence that I, the said John Carter Ramsden, my executors, admi-
nistrators, and assigns, or such others as I, the said John Carter
Ramsden, 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
"IMPROVEMENTS IN LOOMS FOR WEAVING," upon the condition (amongst
others) that I, the said John Carter Ramsden, my executors, or ad-
ministrators, by an instrument in writing under my, or their, or onc
of their hands and scals, should particularly describe and ascertain
Llc nature of the said Invention, and in what manner the same was

page_text: to be performed, and cause the same to be filed in the Great Scal Patent
Office within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that I, the said John Carter Ramsden, do hereby
5 declare the nature of the said Invention; and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say:-
The Invention has for its object improvements upon an Invention for
which Letters Patent were granted to me, dated March 15th, 1870,
No. 761, and relates to improvements in the mode of actuating the
rotary shuttle boxes of loons.
For this purpose according to my present Invention I dispense with
the cylinders containing the helical grooves and with the piston rods
working within such cylinders, as also with the connecting rod which
connects the two pistons together, but I retain the other parts described
in the Specification of the aforesaid Letters Patent.
The mode in which I propose to actuate the rotary shuttle boxes is as
follows: Instead of the bottom grooved cylinder formerly employed,
and which was placed opposite the fulcrum of the lathe sword, I employ
a shaft, on the end of which I fix a pulley, and instead of the grooved
cylinder placed inside the shuttle box as formerly, I fix another pulley
on the axis of the shuttle box outside the framing carrying the shuttle
box. Round these two pulleys I place a strap, but as the strap of itself
would not be sufficiently certain in its action, I fix a stud or pin in the
face of each pulley, and connect the two pulleys together by a rod:
working upon such studs or pins.
'
And in order that my said Invention may be more clearly understood
and readily carried into effect, I will proceed, aided by the accompanying
Drawings, more fully to describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is an end view and Figure 2 is a front view of so much of
a loom as will enable me to describe my present Invention.
a, a, is the framing of the loom; b is the cam shaft; and c, the crank
shaft. On the cam shaft is fixed an eccentric b', which by means of
a link or connecting rod 6 gives a to-and-fro motion to a lever & mounted
on an axis of motion d. The upper end of this lever d is connected
and gives motion to a bar e having a projection e¹ formed or fixed

page_text: thereon. g, are other sliding bars having on their ends toothed
racks f, g, which take into opposite sides of a toothed pinion ' fixed
on the upper end of a shaft or axis h, on the lower end of which is
fixed a bevilled toothed wheel / taking into a bevilled toothed wheel i
on the inner end of the shaft or axis i. The bars f, g, are provided with 5
moveable teeth or projections ƒ³¿Î³Îƒƒ^ƒ',' and g³, Ø², y', I", 9°,
and g², which teeth or projections' are connected together in pairs by
suitable cords; the teeth f, g, being connected together by one pair of
such cords, and S³, g³, by another pair, and so on. These cords are
acted upon by a small jacquard apparatus or other suitable pattern 1
surface carried on the end of the loom, as is now well understood. The
projection e' from the sliding bar e works between the bars ƒ and g.
Thus as each pair ƒ³, g³, ƒ³, g³, and so on of the movable teeth carried
by the sliding bars f, g, are caused to project from the inner sides of
such bars the projection e' is caused in its forward motion to carry one
or other of the teeth,,', ƒ³, ƒ³, ƒ³, towards the right hand of
the end of the loom, until in the consequent sliding of the bar in the
contrary direction one or other of the moveable teeth g², g³, g', Ð³, D°, Ð²
comes against such projection, when the motion of the bars f, g, in
opposite directions terminates.
"
2
Thus far the apparatus is of a similar character to that described in
the Specification of my Patent before referred to, but in order to facilitate
the operation of the parts I dispense with the cylinders containing the
helical grooves and with the piston rods working within such cylinders,
as also with the connecting rod or lever which connects the two pistons 2
together, as described in the aforesaid Specification, and in lieu thereof
1 fix a pulley on the outer end of the shaft or axis i, and on the end
of the axis j of the rotary shuttle box I fix another pulley. Round
these two pulleys I place a strap or chain k, but as such strap or chain
of itself would not be sufficiently certain in its action I fix a stud or pin å
in the face of each pulley, j', and connect the two pulleys together by a
link or connecting rod working upon such studs or pins. If desired the
strap or chain & may be adapted to work with teeth or projections on the
pulleys, j'.
By causing the moveable teeth to project on the inside of the sliding
bars, 9, in pairs the rotary shuttle box is caused to rotate to any desired
as to bring any required shuttle into position to be thrown
stant

page_text: Having thus described the nature of my said Invention, and the mode
in which I carry the same into effect, I would have it understood that
what I claim is, the combination of a strap or chain with a link or
connecting rod to operate and ensure a proper amount of motion being
given to the rotary shuttle box in lieu of cylinders provided with helical
grooves and with piston rods working therein, as described in the
Specification of my Patent herein-before referred to.
In witness whereof, I, the said John Carter Ramsden, have here-
unto set my hand and seal, this Thirtieth day of August, in
the year of our Lord One thousand eight hundred and seventy-
JOHN CARTER KAMSDEN. (L.S.)