IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1873

page_text: LETTERS PATENT to George Hascltine, of the "International Patent
Office," Southampton Buildings, London, Doctor of Laws, for the
Invention of "IMPROVEMENTS IN LOOMS FOR WEAVING." -A com-
munication from abroad by Lester Eli Ross, of Providence, Rhode
Island, United States of America, Mechanic.
Sealed the 19th August 1873, and dated the 2nd July 1873.
COMPLETE SPECIFICATION filed by the said George Haseltine at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 2nd July 1873, pursuant to the 9th Section of
the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
HASELTINE, of the "International Patent Office," Southampton
Buildings, London, Doctor of Laws, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS IN
LOOMS FOR WEAVING," and have petitioned Her Majesty to grant unto me,
my executors, administrators, and assigns, Her Royal Letters Patent for
the same, and have made solemn Declaration that it has been com-

page_text: municated to me from abroad by Lester Eli Ross, of Providence, Rhode
Island, United States of America, Mechanic.
NOW KNOW YE, that I, the said George Haseltine, do hereby declare
that the following Complete Specification, under my hand and scal,
fully describes and ascertains the nature of the said Invention, and
in what manner the same is to be performed in and by the following
statement, reference-being had to the accompanying Drawing forming
a part of this Specification :-
This Invention relates to the shuttle motion of looms, and is designed to
furnish the power with which the shuttle is driven independently of the
power and speed with which the loom is operated..
In this Invention the force that drives the shuttle through the warp
is derived from a series of tension springs wound spirally upon a shaft,
the ends of the said shaft being fitted into bearings and free to revolve
in the same. One end of each spring is secured to the shaft in any :
suitable manner, and the other end of each spring is held rigidly by a
brace or rod, so that when the shaft is made to revolve in one direction
the springs are drawn tightly around it, and when released the springs
cause it to revolve forcibly in the opposite direction. An upright arm
is attached to the shaft to which the picker staff is fastened in any
suitable manner, and the forward motion of the shaft produced by the
recoil of the springs drives the shuttle by means of the picker staff.
I am aware that there is no novelty in the use of a spring to propel
the shuttle in looms, but all attempts to introduce this method of
throwing the shuttle and to bring it into general use, have heretofore
proved unsuccessful by reason of the unreliable nature of coiled springs and
springs generally, as to durability when used singly or even in pairs.
To correct this radical defect and thereby to secure all the advantages
of a reliable and durable independent shuttle motion is the object of this
Invention. This much sought for result is believed to be attained in
this device because it is so constructed that but little strain is put upon
any one spring, and the least possible vibration is required to give the
requisite amount of tension power to drive the shuttle across in time for
cach alternate picker stroke.

page_text: necessary to enable the operation of the shuttle motion to be clearly
understood. The springs on the right hand side of the Drawing are.
shown as in tension, and the picker staff as thrown back ready for the.
stroke; while the springs on the left hand side are shown relaxed; and.
the picker staff thrown forward having given its stroke.
The picker staffs K have at their lower ends shoes k, with convex ·
under sides; they are pivoted to supports 1, which have concave surfaces.
to correspond with the convex under sides of the shoes . Each picker
staff is by means of straps connected to the upright arm of a bell-crank
lever G, moving loosely on a shaft g which turns loosely in bearings in
side pieces S of the frame. The horizontal arm of this lever G moving
with its end in a slotted guide standard F is by means of a strap N.
connected to one arm of another bell-crank lever M pivoted to the upper
cross piece of the frame, and whose other arm is operated by means of a.
grooved cam L on the driving shaft A, in such a manner as to alternately.
raise and drop the horizontal arm of the lever G. The inner ends of a
number or plurality of springs J coiled around the shaft g are secured to
the latter, while their outer ends bear against a bar H which, being held
between the side pieces S, holds these ends firmly down in such a
manner, that when the shaft g is revolved through the bell-crank lever G
(a ratchet wheel R on the shaft g, and a pawl r on the lever G forming
the connection between shaft g and lever G) by elevating the hori-
zontal arm of the latter, the springs J are brought into tension which
is exerted on the shaft g and through it on lever G, and the picker
staff K when the horizontal arm of the lever G is released.
I
On the inside of the standard F and to its upper end is pivoted a
lever C, one of whose arms extends over the shaft A from which it is
clevated at a certain point of every elevation by means of a cam B
keyed on the shaft A near the cam L. The other arm of this lever C is
hook shaped and bears against a pin T projecting laterally from a
swinging hook catch D which is also pivoted to the standard F, and is
when not acted upon by the shorter hook shaped arm of lever C held to
cover the slot of the standard F, in which the end of the horizontal arm
of the lever G moves up and down by means of a spring E. In this way
the horizontal arm of the lever G in being moved upward through the
cam L and lever M, pushes aside the hook catch D forcing the spring E:
backward until it has passed the hook itself; then the hook catching
under the lever G holds it in that position, and through it the springs J

page_text: in tension until the lever C operated by the cam B, forces back the
thus
catch D by bearing against its pin T from under the lever G,
releasing the latter and allowing the springs J to exert their power on
the picker staff, and thus throw the shuttle.
Rubber pads O are secured to the horizontal brace of standards F
to render the striking of the horizontal arms of the levers G in their
sudden downward movement noiseless.
When the loom is set in motion the cam L revolves and alternately
operates one end of the lever M, thereby clevating the horizontal portion
of the lever G, turning the shaft g, and putting the springs J on the same
in tension, and also allowing the picker staff to fall back to its proper
position for giving the stroke, as shown on the right hand side of
Figure 2.
The horizontal arm of the lever G in its upward movement puslics.
back the hook catch D, which being operated by the spring E catches:
and holds the lever G, thereby retaining the power in the springs until
the slay board is in proper position and the warp open; then the lever C
operated by the cam B and bearing against the pin T of the catch D,
removes the latter from under the lever G releasing the same, and
allowing the full force of the springs to be exerted against the lever G,
picker staff K, and the shuttle, the latter is driven across with
uniform force, regardless of the speed of the loom for the force of the
springs always remains the same whether the loom is operated slowly or
quickly.
Any force remaining in the springs J after driving the shuttle expends
itself upon the rubber pads O. The force of the springs can be
regulated (i.e., increased or diminished) by means of the ratchet
wheel R and pawl r. The convex under side of the shoes % of the picker
staff K causes the lower ends of the latter to move in a circle, whereby
the circle which the upper ends would make in striking if their lower
ends were pivoted at one point is reduced to a straight line, thus
the line of the stroke of the picker staff against the shuttle lies in a
horizontal plane, and in line with the horizontal longitudinal centre line
of the shuttle. By this means the jumping of the shuttle caused by the
curved stroke of the common pivoted picker staff is entirely avoided.
Having thus fully described the said Invention as communicated

page_text: to me by my foreign correspondent, and the manner of performing the
same, I wish it understood that I claim,―
..
First. The shaft g and brace rod H in combination with the springs J,
as herein set forth and for the purposes specified.
Second. The ratchet wheel R and pawl in combination with the
shaft g, lever G, and springs J, as hercin set forth and for the purposes
specified.
Third. The hook catch D, spring E, lever C, cam B, and standard F,
combined substantially as herein set forth and for the purposes specified.
Fourth. The cam L, bell-crank lever M, lever G, pawl r, ratchet
wheel R, shaft g, and rod H, in combination with the springs J, as
herein set forth for the purposes specified.
Fifth. In combination with the lever G and standard F the rubber
pads O, as herein described and for the purposes specified.
Sixth. The picker staffs K with shoes k, provided with convex under
sides which move in correspondingly concave supports 7, as herein set
forth and for the purposes specified.
In witness whereof, I, the said George Haseltine, have hereunto set
my hand and seal, this First day of July, in the year of our Lord
One thousand cight hundred and seventy-three.
Witness,
JAMES EDWARDS,
8, Southampton Buildings,
London.
GEORGE HASELTINE. (L.S.)