IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1876

page_text: LETTERS PATENT to John Leeming, of Bradford, in the County of York,
Machine Maker, for the Invention of "IMPROVEMENTS IN LOOMS FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said John Leeming at the Office
of the Commissioners of Patents on the 6th June 1876.
JOHN LEEMING, of Bradford, in the County of York, Machine Maker. "Iм-
PROVEMENTS IN LOOMS FOR WEAVING."
The object of this Invention is by an improved combination of mechanism to
give to the healds of looms for weaving a "positive" upward and a positive down-
wards movement when and as the "pattern " of the fabric being woven may
require. I employ a series of horizontal levers above the healds, and a like series
below the healds, the levers composing each set are mounted upon a stud (as
fulcrum) about midway their length. The inner ends of the upper levers are
connected to the top henld staves, and the inner ends of the bottom lovers to the
bottom heald staves, the outer ends of both series of levers are connected to each
other. In each of the upper levers is a curved slot or cam groove within which
is received and traversed (by means herein-after described) a bowl or pulley
attached to the foot of a vertical lever. From the top of the vertical lever extend
two arms (one weighted), having a catch at their extremities, and which may be
operated upon by "card" or pig mechanism so as to engage with "branders
whereby the vertical lever will be caused from time to time to oscillate upon its
fulcrum stud, and the bowl or pulley attached to its lower end will by means of
the slot or cam groove before referred to operate the horizontal levers and through
the connections raise or depress the healds as required.
"
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Leeming in the Great Seal Patent Office on the 6th December
1870.
JOHN LEEMING, of Bradford, in the County of York, Machine Maker.
PROVEMENTS IN LOOMS FOR WEAVING."
<< IM-
The object of this Invention is by an improved combination of mechanism to
give to the healds of looms for weaving a "positive" upward and a "positive"
[Price tid.]

page_text: Fig. 1 is an elevation of the apparatus employed for purpose aforesaid. Fig. 2
and 3 are views of two of the levers detached.
The lever A being at a recessed, so as to admit a portion of the lever N to work
within such recess, whereby less space is required for the entire series of levers. At
A above the healds are a series of horizontal levers, another series B are below the
licalds ;
C and D are the fulcrum studs. The ends E of the levers A are connected
to the top heald staves F, and the ends G of the levers B are attached to the
bottom heald staves H, the outer ends J, J, of both series of levers A and B are
connected to each other by rods K. In each of the levers A is a curved slot
or cam groove L, within which is received and traversed (by means herein-
after described) a bowl or pulley M attached to the foot of a vertical lever N
working on a fulerum P, or the cam groove L may be formed in the vertical
lever N, and the bowl or pulley M may be on the lever A, as shewn in the
Drawings, and the latter arrangement I prefer to use. The direction of the cam
groove at each extremity is slightly changed (as shown) in order to hold the
bowl or pulley and thereby the healds steadily and firmly when in the highest or
lowest position. From the top of the vertical lever N extend two arms R and S,
having each a catch or brander W at or near their extremities, and which
may be operated by ordinary "card" or "peg " mechanism (as will be well
understood) so as to engage with the branders W, whereby the vertical levers N
will be caused from time to time to oscillate upon the fulcrum stud P, and the
bowl or pulley MI attached to its lower end will by means of the slot or cam groove L
operate the levers A, and through the connections K raise or depress the healds as
required.
The construction and arrangement of mechanism above described renders avail-
able as a first driver or prime mover the second motion shaft of the loom. A con-
necting rod Y being attached to the T lever Z and operated by an eccentric or its
equivalent.
Having thus fully described the nature and particulars of this my said Invention,
together with the manner in which the same is to be or may be performed or carried
into practical effect, I would have it understood that in order to fully illustrate the
application of my Invention it is necessary to refer to and illustrate many paris
which are old, but I limit my claim to the application and use of the lever A

page_text: or N (having the curved slot or cam groove L), operated in the manner and for the
purpose herein fully described.
In witness whereof, I, the said John Leeming, have hereunto set my hand
and seal, this Second day of December, in the year of our Lord One
thousand eight hundred and seventy-six.
Witness,
WALTER BRIERLEY,
Patent Agent,
Halifax & Blackburn.
JOHN LEEMING. (L.S.)