IMPROVEMENTS IN LOOMS FOR WEAVING."
Year: 1874

page_text: LETTERS PATENT to William Whiteley, of the Firm of William
Whiteley and Sons, of Lockwood, near Huddersfield, in the County
of York, Machine Makers, and George Harling, of the same Place,
Foreman, for the Invention of " IMPROVEMENTS IN LOOMS FOR
WEAVING."
PROVISIONAL SPECIFICATION left by the said William Whiteley
and George Harling at the Office of the Commissioners of Patents,
with their Petition, on the 19th January 1874.
We, WILLIAM WHITELEY, of the Firm of William Whiteley and Sons,
of Lockwood, near Huddersfield, in the County of York, Machine
Makers, and GEORGE HARLING, of the same Placo, Foreman, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN LOOMS
FOR WEAVING," to be as follows:-
-
1

page_text: driving power can be instantly connected to or disconnected from the
loom. One part of the said box forms a pulley, and is capable of
running loose on the crank shaft, and the other part forms a friction
plate fitting into a conical recess in the pulley, and is capable of sliding
on a feather or key by means of a lever attached to and actuated by the
usual "knocking-off lever," or the lever employed for starting and
stopping the loom.
Secondly. To means of working "rising boxes" or change shuttle
boxes in looms having three or more of such boxes, and consists in the
use of two racks gearing into one pinion capable of partial rotation on a
fixed stud. To this pinion is fixed a cam or eccentric grooved plate, and
on the stud of the pinion is fixed a friction plate with ratchet teeth
pressed by a spring against the back of the cam plate when the boxes
are being lowered, a catch or pawl being hinged on a stud, so as to take
into the teeth of the friction plate when the boxes are being lifted.
A bowl or friction roller (on a rod to run in the cam groove) connects
the same to the ordinary box lever. Motion is given to one or other of
the racks by a rotating cam on the crank shaft, such cam being slided or
brought into suitable position by jacquard apparatus. This cam is so
constructed as that while it is lifting one rack it is also retarding or
preventing the sudden drop or overrunning of the other rack.
Thirdly. It relates to improved arrangements for operating the tappets
for working the healds in top-centred looms, that is, looms wherein tho
slay or batten is hinged above the warp, and more especially to broad
looms for weaving woollens or heavy fabrics, and to the picking of the 1
shuttles.
The improvements consist in dispensing with the usual low or bottom
shaft, and connecting the crank shaft with the usual tappet shaft by a
short upright shaft and bevil gearing, and having the picking tappets
on the crank shaft, and capable of sliding thereon, so as to pick alter-
nately or at each alternate rotation thoreof from each end of the
loom, which slide motion is obtained by a swivelling stud and cam
plate.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Whiteley and George Harling in the
Great Seal Patent Office on the 18th July 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, WILLIAM
WHITELEY, of the Firm of William Whiteley and Sons, of Lockwood,
near Huddersfield, in the County of York, Machine Makers, and GEORGE
HARLING, of the same Place, Foreman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of January, in the
year of our Lord One thousand eight hundred and seventy-four, in
the thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto us, the said William Whiteley and
George Harling, Her special licence that we, the said William Whiteley
and George Harling, our executors, administrators, and assigns, or such
others as we, the said William Whiteley and George Harlin, our
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 we, the
said William Whiteley and George Harling, our executors or admini-
strators, by an instrument in writing under our, 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 Scal
Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that we, the said William Whiteley and George
Harling, do hereby declare the nature of our said Invention, and in what
manner, the same is to be performed, to be particularly described and
ascertained in and by the following statement, that is to say :-

page_text: driving power can be instantly connected to or disconnected from the
loom. One part of the said box forms a pulley, and is capable of
running loose on the crank shaft, and the other part forms a friction
plate fitting into a conical recess in the pulley, and is capable of sliding
on a feather or key by means of a lever attached to and actuated by the
usual "knocking-off lever," or the lever employed for starting and
stopping the loom.
Secondly. To means of working "rising boxes" or change shuttle boxes
in looms having three or more of such boxes, and consists in the use of
two racks gearing into one pinion capable of partial rotation on a fixed
stud. To this pinion is fixed a cam or eccentric grooved plate, and on
the stud of the pinion is fixed a friction plate (with ratchet teeth)
pressed by a spring against the back of the cam plate when the boxes
are being lowered, a catch or pawl being hinged on a stud, so as to take
into the teeth of the friction plate when the boxes are being lifted.
A bowl or friction roller (on a rod to run in the cam groove) connects
the same to the ordinary box lever. Motion is given to one or other of
the racks by a rotating cam on the crank shaft, such cam being slided
or brought into suitable position by jacquard apparatus. This cam is so
constructed as that while it is lifting one rack it is also retarding or
preventing the sudden drop or overrunning of the other rack.
Thirdly. It relates to improved arrangements for operating the tappets
for working the healds in top-centred looms, that is, looms wherein the
slay or batten is hinged above the warp, and more especially to broad
looms for weaving woollens or heavy fabrics, and to the picking of the
shuttles.
The improvements consist in dispensing with the usual low or bottom
shaft, and connecting the crank shaft with the usual tappet shaft by a
short upright shaft and bevel gearing, and having the picking tappets on
the crank shaft, and capable of sliding thereon, so as to pick alter-
nately or at each alternate rotation thereof from each end of the loom,
which slide motion is obtained by a swivelling and cam plate.
In order that this Invention may be more fully understood, we herein
give reference to the accompanying Sheets of Drawings marked with
figures and letters of reference.
The first part of our Invention is illustrated by Figs. 1 and 2, of which
Fig. 1 represents a front view of a loom, and Fig. 2, a plan view of

page_text: same. A is a pulley running loose on the crank shaft B. This pulley
is constructed as to form a friction box. C is a friction plate sliding on
a feather on the crank shaft, and is actuated by the lever D mounted
on the stud E, and attached to the knocking-off lever F. By this
method the motive power can be applied and disconnected instan-
taneously.
The second part of our Invention is illustrated by Figs. 5, 6, 7, 8, 9,
and 10, of which Fig. 5 is one end elevation of a loom with our improve-
ments applied; Fig. 6 is a back elevation; and Figs. 7, 8, 9, and 10
details. A is the framework; and B, the shuttle boxes mounted in the
frame C oscillating on the stud D. The boxes are connected by rods E
to the lever F working on the stud G in the usual manner. H, H, are
two racks gearing with the pinion J mounted on the fixed stud J¹. To
this pinion J is fixed a cam or eccentric K, and on the stud J is a
friction plate L, into the teeth of which the catch L' takes. The friction
plate is recessed, and the recess filled up with a leather pad or washer L³,
and is pressed against the cam K by the spring L* regulated by set
screw. M is the crank shaft mounted and capable of sliding, on which
is a boss N, to which are attached 3 cams or inclines N¹, 3, & 8. These
cams are for the purpose of giving motion to the racks H and H¹.
The operation is as follows, supposing the boxes to be at their lowest
position:-The pinion being caused to rotate by means of one of the
racks (say H) being acted on by any of the cams N1, 3, & ³, the cam K
also rotates, and by means of the friction bowl O lifts the rod P attached
to the lever F at P¹, and so raises the boxes. For lowering the boxes the
cam H is acted upon, and the pinion is thereby turned in the opposite
direction, the motion or descent being retarded by the friction plate I.
The cams N¹,, and are caused to slide on the crank shaft by means of
the lever R acted on (through the medium of the rod R¹ and bell-crank
lever R³) by a series of projections or lugs S arranged on the star wheel,
as shewn in detail at Figs. 9 and 10. The two outer rows of lugs are for
this purpose, the inner rows being those ordinarily employed for the
picking motion. It will be seen that the lugs are of varying height, the
largest S¹ acting to bring the cam N³ into operation for top and bottom
position, the smaller S bringing the cams N' and into operation for
middle position.
3

page_text: with the crank shaft by the bevil gearing J, J, and K, K¹. The picking
tappits Lare mounted on the crank shaft M, and capable of sliding thereon,
the sliding motion being obtained by attaching the picking tappits to a
cam N having two grooves, which intersect or cross each other. A
swivelling stud P is fixed to the framework, and works in the cam
grooves, being so arranged as to enter each groove alternately, and so
slide the cams to and fro on the crank shaft, and causing the tappit cam
to depress the lever or treddle R at each alternate stroke or revolution
of the shaft. The construction and operation of the cam N will be
understood by a reference to the enlarged details, Figs. 3 and 4.
In witness, I, the said George Harling, for and on behalf of
myself and the said William Whiteley, have hereunto set my
hand and seal, this Sixteenth day of July, in the year of our
Lord One thousand eight hundred and seventy-four.