IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1873

page_text: LETTERS PATENT to George Haseltine, of the "International Patent
Office," Southampton Buildings, London, Doctor of Laws, for the
Invention of "IMPROVEMENTS IN LOOMS FOR WEAVING."-A communi-
cation from abroad by Edwin Oldfield, of Norwich, Connecticut,
United States of America, Manufacturer.
COMPLETE SPECIFICATION filed by the said George Haseltine at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 13th November 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

page_text: has been communicated to me from abroad by Edwin Oldfield, of
Norwich, Connecticut, United States of America, Manufacturer.
NOW KNOW YE, that I, the said George Haseltine, do hereby declare
that the following Complete Specification, under my hand and seal, 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 consists in the combination with the harness moving
mechanism of a loom of a pattern chain which acts on cam-shaped
levers connecting directly with the harness frames in such a manner that
the said frames are raised or depressed by the direct action of the pattern
chain without any intermediate mechanism. Further, in the arrange-
ment of two pattern chains that act on cam-shaped levers, each of which
connects with a harness frame above and below, so that when such lever
is moved in one direction by one of the pattern chains the corresponding
harness frame is raised, and when the lever is moved in the opposite
direction the said harness frame is depressed, and by these means the
construction of the loom is materially simplified; also in a pattern chain
mounted on or supported by a shaft which receives a continuous
revolving motion in such a manner that no locking mechanism for the
pattern chain is required, and the motion of such chain is rendered
simple and easy; further, in the arrangement of standards which form
the bearings for antifriction rollers in combination with the leaves of a
pattern chain, the said standards and leaves being so constructed that
the position of the standards can be readily changed; also in a harness
motion which may be detached from the driving shaft and operated
independently by the operator for the purpose of finding the right pick
when lost; further, in the arrangement on a pattern chain of projections
of different height, the said projections being made to act on a lever
which connects with the drop boxes, so that by the direct action of the
pattern chain on the said lever the drop boxes are brought and retained
in the required position for every successive pick.

page_text: Figure 5 is a transverse section of the shaft which carries the said
pattern chain in a larger scale than the previous Figures.
Figure 6 is a detached plan view of one of the leaves of the said
pattern chain.
Similar letters indicate corresponding parts throughout the Drawing.
A designates the main frame of the loom which is of the usual form
and construction; B, B; are the harness frames which are suspended
from cords a that pass over rollers 6 in the top of the main frame A,
and are connected to arms o extending from cam-shaped levers C, one
of which corresponds to each of the harness frames. These levers swing
on a common point c, and their arms o connect also by cords d with the
under edges of the harness frames in such a manner that by swinging
the levers in one direction the corresponding harness frames are raised,
and by moving the said levers in the opposite direction the corresponding
harness frames are depressed. The levers C extend down between two
square shafts e, f, geared together, so that they revolve in opposite
directions, and which receive a continuous revolving motion from the
driving shaft D by means of gear wheels g, h, or by any other suitable
mechanism. The wheel h is preferably secured on the shaft D by means
of a feather key so that it can be thrown in or out of gear with the
wheel g for the purpose of enabling the operator to turn the harness
motion independently in order to find the right pick when the same has
been lost. A suitable lever serves to throw the wheel g in and out of
gear. The square shafts e, f, carry the pattern chains E, F, the leaves
of which are connected to each other in the usual manner, so that by
the revolution of the shafts e, f, the said pattern chains are caused to
move continuously in opposite directions past the levers C. On the
leaves of the pattern chains are secured standards or ears i, Figure 5,
which form the bearings for antifriction rollers j, and the said leaves
are furnished each with a number of holes, Figure 6, so that the position
of the standards i may be changed to suit the pattern to be produced.
The edges of the levers C are made curved to form cams k, against
which act the antifriction rollers ; of the pattern chains.
By the action of the two pattern chains the levers C receive an
oscillating motion on their pivots, and the harness frames are alternately

page_text: raised or depressed as tho pattern demands; the cams k on the edges of
said levers are so formed that each harness frame is retained in its raised
position for a sufficient length of time to allow the shuttle to pass
through the stud, and if desired each harness frame may be retained in
its raised or depressed position for a number of successive picks by
adjusting tho lugs and antifriction rollers on the pattern chain
accordingly. The weight of the harness frames acts upon the levers C,
and has a tendency to force the same outward against the pattern
chain E; it may be balanced by a spring 7 one to each of the levers, as
shewn in Figure 1, or if desired, and if the nature of the pattern allows,
the pattern chain F may be omitted and the springs made with such a
tension that they force their levers out against the pattern chain E, thus
keeping the harness frames always in an elevated position while the
pattern chain E serves to depress the same at the proper intervals.
of S
For certain simple patterns the leaves carrying the antifriction rollers
may be secured directly to tho shafts e, f. These shafts are provided
with recesses m, as shewn in Figure 5, for the purpose of receiving the
leaves, and in the said shafts are cavities p to make room for nuts which
serve to retain the lugs carrying the antifriction rollers. On the leaves
of the pattern chain E are also secured studs or antifriction rollers q
various height which act on a cam-shaped bell-crank lever C* connected
by a rock shaft and levers 8 with the drop box G. By the action of
the roller studs q on the lever C* therefore the drop boxes are brought
in the required position as the pattern demands, and by springs t, which
have a tendency to draw the drop boxes down, the lever O* is forced up 2
against the pattern chain E as far as the roller studs q will allow. By
this arrangement the drop boxes are operated by the direct action of the
pattern chain without any intermediate mechanism. The levers can be
shaped so as to make either a close or open stud loom.
Having thus fully described the said Invention as communicated to 3
me by my foreign correspondent, and the manner of performing the
same, I wish it understood that I claim,-
First. The combination with the harness moving mechanism of a loom
of a pattern chain which acts on cam-shaped levers connecting directly
with the harness frame so that the said frames are raised or depressed 3
by the direct action of the said pattern chain without any intermediate
mechanism, as herein described.

page_text: Second. The arrangement of two pattern chains acting on cam-shaped
levers each of which connects with one of the harness frames above and
below, so that by the direct action of one pattern chain on said levers
the harness frames are raised, and by the direct action of the other
pattern chain the harness frames are depressed, as herein set forth.
Third. A pattern chain in a loom supported by a shaft which has a
continuous revolving motion, as herein described.
Fourth. The standards o which form the bearings for antifriction
rollers in combination with the leaves of a pattern chain, the said
standards and leaves being so constructed that the position of the
standards can be readily changed, as herein set forth.
Fifth. The combination with the driving shaft D and with the harness
motion of two wheels g, h, or equivalent devices, the wheel / being so
arranged that it can be thrown in or out of gear, for the purpose set
forth.
Sixth. The arrangement on a pattern chain of projections of different
length, the said projections being made to act directly on a lever which
connects with the drop boxes, so that by the action of the pattern chain
on the said lever the drop boxes are brought in the required position, as
hercin described.
In witness whereof, I, the said George Haseltine, have hereunto set
my hand and seal, this Thirteenth day of November, in the
year of our Lord One thousand eight hundred and seventy-
three.
Witness,
Wч. ROBT. LAKE.
GEORGE HASELTINE. (L.S.)