A New or Improved Selvedge Motion for Looms.
Year: 1893

page_text: Date of Application, 8th Feb., 1893
Complete Specification Left, 7th Apr., 1893-Accepted, 13th May, 1893
PROVISIONAL SPECIFICATION.
A New or Improved Selvedge Motion for Looms.
1, JOHN PAYNE of 3, Lomas Street, Burnley, in the County of Lancaster,
Overlooker, do hereby declare the nature of this invention to be as follows:-
This invention relates to that class of apparatus for forming selvedges, which is
separate and distinct from the usual harness or shedding motion in looms for
weaving.
The harness or healds, through which the side ends pass, are divided into two
portions, one portion being attached to or near one extremity, and the other
portion to or near the other extremity of a semicircular plate, loosely mounted
on a stud fixed to any convenient part of the loom, the said semicircular plate
being caused to reciprocate or oscillate in a swinging manner by means of a pin
and connecting rod, worked by an eccentric or the like, adjustably secured to the
tappet shaft of the loom.
An up and down movement is thus imparted to each half of the side ends by
the motion of the separate and independent set of healds or harness, the upper
portion of which is secured to a reel or the like fixed to a loose shaft, which,
receiving a reciprocating motion through the healds or harness on one side of the
loom, imparts the same motion to a similar set of healds or harness at the other
side of the loom, whereby uniformity of action of the side ends at each side of
the loom is effected, whilst at the same time the connecting rod and eccentric
mechanism may be dispensed with at this side of the loom.
A fork or other guide may be employed to guide or steady the healds near
where they form the shed.
The working parts of my improved selvedge motion are adjustable to any width
of warp, without having to change or alter the position of any other working parts
of the loom.
D
L Jobmiany 1892
GEO. DOWNING,
Agent.
COMPLETE SPECIFICATION.
A New or Improved Selvedge Motion for Looms.
I, JOHN PAYNE of 3, Lomas Street, Burnley, in the County of Lancaster,
Overlooker, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
This invention relates to that class of apparatus for forming selvedges, which
is separate and distinct from the usual harness or shedding motion in looms for
weaving.
The harness or healds, through which the side ends pass, are divided into two
portions, one portion being attached to or near one extremity, and the other portion
to or near the other extremity of a semicircular plate, loosely mounted on a stud
fixed to any convenient part of the loom, the said semicircular plate being caused
to reciprocate or oscillate in a swinging manner by means of a pin and connecting
rod, worked by an eccentric or the like, adjustably secured to the tappet shaft of
the loom.
An up
and down movement is thus imparted to each half of the side ends by

page_text: the motion of the separate and independent set of healds or harness, the upper
portion of which is secured to a reel or the like fixed to a loose shaft, which,
receiving a reciprocating motion through the healds or harness on one side of the
loom, imparts the same motion to a similar set of healds or harness at the other
side of the loom, whereby uniformity of action of the side ends at each side of the
loom is effected, whilst at the same time the connecting rod and eccentric mechanism
may be dispensed with at this side of the loom.
A fork or other guide may be employed to guide or steady the healds near where
they form the shed.
The working parts of my improved selvedge motion are adjustable to any width
of warp, without having to change or alter the position of any other working parts
of the loom.
In the accompanying drawings, Fig. 1 is a sectional elevation of a loom with my
improved selvedge motion applied..
A A are the side ends operated by the separate and independent set of healds
or harness B B, which are attached to a leather band or bands or the like, whose
ends are secured respectively at each side of a kind of cam wheel C by means of
an adjustable screw D. The cam wheel C is loosely mounted on the stud E secured
to the bracket F, which is attached to any convenient part of the loom frame.
The cam wheel C is caused to reciprocate or oscillate in a swinging manner by
means of the eccentric rod H carrying a pin, which works in a slot in the face of
the cam wheel C, and having at its other extremity a band I which clips the two
halves of the eccentric J fixed to the tappet shaft K of the loom.
An up and down motion is thus imparted by the eccentric on the tappet shaft to
each half of the side ends through the motion of the separate and independent
set of healds or harness, the upper portion of which is attached respectively to
leather bands or the like, secured on each side of a heart shaped piece or cam L
fixed to the loose shaft M at the top of the loom. This shaft receiving a recipro-
cating or rocking motion through the action of the healds or harness at one side
of the loom, imparts the same motion to a similar set of healds or harness at the
other side of the loom, whereby uniformity of action of the side ends at each side
of the loom is effected, whilst at the same time the eccentric mechanism may be
dispensed with at this side of the loom.
The heart shaped piece or cam at the top of the loom is pretty similar in shape
to the cam wheel C, to which the eccentric rod is connected, and is fully illustrated
in Fig. 3, wherein it is shewn provided with an adjusting screw N for securing the
leather band or bands, to which the healds or harness are attached.
In Fig. 2 is shewn my invention slightly modified for the purpose of obtaining
a very deep shed at the side, or otherwise altering considerably its formation. The
eccentric rod H works in the longitudinal slot Ŏ of the radial arm P, which is
loosely mounted on a stud Q fixed to any convenient part of the loom. Adjustably
secured in the longitudinal slot of the radial arm P is also connecting rod R,
which is fastened to the cam wheel C. It will at once be evident that by simply
adjusting the connecting rod R in the longitudinal slot O of the radial arm P,
I am enabled to get any degree of lift of the healds or harness for the formation of
the shed.
In both arrangements, the eccentric rod H or the connecting rod R is adjustable
in the slot of the cam wheel (as seen in Fig. 2) so as to increase or decrease at will
the extent of the lift, by bringing the throw of the eccentric or connecting rod
nearer to or further from the centre of the cam wheel.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The construction and arrangement of a selvedge motion, substantially as
described and illustrated in Fios 1 2 and 3

page_text: 2. The eccentric J or the like and mechanism for imparting an up and down
motion to the separate set of healds or harness, substantially as described and
illustrated in Figs. 1 and 2.
3. The loose or rocking shaft M for transmitting the motion of the healds
to another set of healds at the opposite side of the loom, substantially as
described.
4. The cam wheel C provided with a slot in its face, substantially as and for
the purpose described and illustrated.
$11000
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent.