IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1883

page_text: LETTERS PATENT to John Langton, of Leyland, Mechanical Engineer, and
James Gregson, of the firm of Gregson and Monk, of Preston, Machinist
and Loom Maker, both in the County of Lancaster for an Invention of
IMPROVEMENTS IN LOOMS FOR WEAVING
PROVISIONAL SPECIFICATION left by the said John Langton and James
Gregson at the Office of the Commissioners of Patents on the 28th April 1883.
JOHN LANGTON of Leyland, Mechanical Engineer, and JAMES GREGSON, of the
firm of Gregson and Monk, of Preston, Machinist and Loom Maker, both in the
County of Lancaster "IMPROVEMENTS IN LOOMS FOR WEAVING
"
This Invention of improvements in looms for weaving relates to means for
altering and adjusting the position of the crank and tappet wheels relatively to
the "pick." In existing arrangements the crank and tappet wheels are made
fixtures upon their respective shafts and the teeth of the, wheels, at the point
which receives the shock caused by the "pick" or cam striking the picking bowl,
wear away and cause considerable trouble and loss by the breaking of the wheel
teeth when partially worn through. Moreover, in weaving the finer kinds of cloth,
the setting of the wheels to the crank and slay for picking requires moro accurate
adjustment than results from the moving forward or backward of one of the
wheels to the extent of one tooth which for fine work produces too great an
alteration one way or the other.
Now according to our Invention either or both the crank and tappet wheels are
so mounted upon their respective shafts as to be capable of being moved. round
thereupon, the wheel bosses being provided with friction cones, plates, or fine
toothed clutches which meet or engage with corresponding conical recesses, plates,
or clutchos fastened upon the shafts. The cones, plates, or clutches are drawn
together and secured in the required position by screw bolts and nuts in the usual
or any convenient manner. Thus upon the screw bolts being loosened the wheels
may be turned round upon their shafts to any desired position thereby permitting
of the most exact and accurate adjustment; and it will be obvious that the
relative position of the wheel teeth may be readily and quickly altered, thereby
allowing the wear and tear caused by the striking of the 'pick at a given point to
be distributed from time to time over all the teeth of the wheels and so reduce
the liability of breakage.
:

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Langton and James Gregson in the Great Seal Patent Office
on the 26th October 1883.
JOHN LANGTON of Leyland Mechanical Engineer and JAMES GREGSON of the
Firm of Gregson and Monk of Preston Machinists and Loom Makers both in the 5
county of Lancaster. "IMPROVEMENTS IN LOOMS FOR WEAVING"
Our Invention of Improvements in Looms for Weaving relates to means for
altering and adjusting the position of the crank and tappet wheels relatively to
the "pick:" In existing arrangements the crank and tappet wheels are minde
fixtures upon their respective shafts, and the teeth of the wheels at the point 1
which receives the shock caused by the "pick or cam striking the picking bowl,
wear away and cause considerable trouble and loss, by the breaking of the wheel
teeth where worn partially through. Moreover in weaving the finer kinds of cloth
or more particularly to looms that are required to run at a great speed, the setting
of the wheels to the crank and slay for picking requires more accurate adjustment
than results from the moving forward or backward of one of the wheels to the
extent of one tooth, which for fine work or high speeded looms, produces too great
an alteration one way or the other.
HO
".
. Now according to our Invention either or both the crank and tappet wheels are
so mounted upon their respective shafts as to be capable of being moved round
there upon, the wheel bosses being provided with friction cones, plates, or fine
toothed clutches, which meet or engage with corresponding conical recesses, plates,
or clutches, fastened, upon the shafts. The cones, plates or clutches, are drawn
together and secured in the required position by screw bolts and nuts in the usual
or any convenient manner.
Thus upon the screw bolts being loosened the wheels may be turned round upon
their shafts to any desired position, thereby perinitting of the most exact and
accurate adjustment, and it will be obvious that the relative position of the
wheel teeth may be readily and quickly altered, thereby allowing the wear
and tear caused by the striking of the pick at a given point to be distributed
from time to time over all the teeth of the wheels, and so reduce the liability to
'breakage.
It will be readily understood that these wheels being connected by this invention,
a more firm and steady motion is obtained in the driving and picking of the loom,
the shuttle is driven more accurately across the loom, thereby preventing many
accidents in shuttles flying out, it is also a great saving in wear and tear, and in
the time that is usually required when the wheel teeth of the old system are broken
or badly worn, to take them off and re-adjust the loom.
In order that our Invention may be fully understood and readily carried into
operation, we will proceed to describe the accompanying Drawings. In the
different views similar parts are marked with corresponding letters of reference.
Fig. 1 is a side elevation of the loom showing the crank and Tappet wheels in
position. A is the crank wheel and B is the tappet wheel. Fig. are the same
wheels showing the opposite side with the fine tooth clutch Box. Fig. 3 shows the
boss and clutch Box combined, the boss can be made either parallel or conical as
desired, the holes of the wheels being made to suit the boss.
To place the wheels in position for working Fig. 3 vis. the boss and the clutch
Box marked C is placed upon the respective crank and tappet shaft ends and
fastened by a key. The wheels A and B of Figs. 1 and 2. are then placed upon
the boss and drawn together by means of screw bolts or forced together by the

page_text: washer and nut at the end of the crank and tappet shafts, so that it will be readily
seen that by unscrewing the nut or the bolt, the wheels A and B of Fige. 1 and 2
and the boss and clutch box C of Fig. 3 become disconnected, and the wheels
A. and B. of Figs. 1 and 2. may then be turned one tooth or to any position
required for the accurate picking of the loom, or to alter the position of the teeth
when worn in the picking part.
The wheels A. and B. Fige 1. and 2. and the clutch box C. Fig. 3. may be made
into plain plates if desired in the place of clutch boxes and fastened together by
screw bolts, as the clutch box, and may be worked in the same way.
Having now fully described the nature of our Invention and the way in which
we carry it into effect, we may observe in conclusion that we do not confine
ourselves to the precise details we have had occasion to describe or refere to, as
many variations may be made therefrom without deviating from the principles or
main features of our Invention, but what we consider to be novel and original and
therefore claim as the Invention secured to us herein (are.)
First. The application of a clutch Box round the boss of the crank and tappet
wheels.
Second. A conical boss or bush can be inserted in the boss of the crank and
tappet wheels.
Third. The said clutch Box may if desired be made into plain plates.
The object of our Invention is to enable the crank and tappet wheels to be
removed more readily and safer to any position on the crank and tappet shaft
ends, giving greater and more careful regulation to the picking and running of
the loom.
In Witness whereof, wo, the said John Langton and James Gregson have
hereunto set our hands and seals this Twenty Seventh day of September, in the
year of our Lord, One thousand, Eight hundred and Eighty Three.
L.B.
Witness.
WILLIAM THOMAS Fox.
42 Upper Kent Street
Preston.
JAMES GREGSON (L.S.)