Improvements in Apparatus for Operating the Healds and Checking the Picker and Shuttle in Looms for Weaving.
Year: 1889

page_text: Date of Application, 29th June, 1889-Accepted, 3rd Aug.,
1889
COMPLETE SPECIFICATION.
Improvements in Apparatus for Operating the Healds and Checking
the Picker and Shuttle in Looms for Weaving.
I, WILLIAM LONGBOTTOM, of Nelson Foundry, Barnsley, in the county of York,
Engineer, 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 the Shaft Machine for working the healds for twills and
fancy goods, such as diapers, drills, and other figured goods, either linen, cotton,
woollen, jute, manilla, coir; and other fibre goods.
And consists in the shed remaining open, only changing to suit the pattern, and
this is performed by a novel method and is an improvement on my former Patents
for Shaft Machine, viz., No. 370978 and No. 358688.
I employ a jack with the centre part of a spear form, and on the top of this jack
held with a spiral spring is an L lever which holds the spear top jack in position
either up or down.
To prevent the jack being drawn too far I place two light rails across the machine
to stop the jack in position.
Another part of this invention relates to the driving of the machine. I drive from
the first motion or crank shaft by fixing thereon a specially constructed tappet
which moves the machine and consequently the healds with ease and regularity,
thus preventing breakages of yarn, and effecting a saving of. healds, to accomplish
this I construct the tappet to tread the machine gradually, part of the revolutions,
then when the shed is opened the lifter leaves the knives or hooks, and lower quickly
during another part of the revolutions of the crank, the healds remaining still during
this operation for the shuttle to pass through the shed when the tappet again begins
abones tha hoolda
Fig. 1, is a front elevation of shaft machine or dobby.
Fig. 2 is an end elevation of tappet and lever that drive the machine from the
crank or first motion shaft.
Figs. 3 and 4 show modification of picker and shuttle stop motion as explained
on Sheet 1. Figs. 3, 4 and 5 of the Specification of my former Patent No. 358688.
Fig. 1. 1 is the lag roller which carries the wood lags with pegs that give the
pattern. 2 is the spring which the pegs push forward, and which is connected to
hooks, 3, 3, by needles 2 pushing hooks 3, 3, on or off the lifters 4, 4, as the pattern
to be woven requires. 5 is the jack, one for every shaft required, in the centre of
jack 5 is cast a centre piece 5ª with spear point. 6 is an L lever which is cast with
V groove where it comes in contact with jack 5, the said lever 6 is held on to press
between the spear points of jacks 5, holding them in position until the lifter returns
to the next shed.
Fig. 2. the tappet 8 is arranged to give an easy motion to the healds when treading
the shed and returns quickly during the passage of the shuttle through the shed
ready for the next change.
The said tappet 8 drives the lever 9 which is connected to the lifters 4, 4, by
rod 10, these lifters receiving the hooks 3, 3, which are connected to jacks 5, 5,
which lift the healds, these jacks 5, 5, are held open by an ☐ lever 6 pressed by
spiral spring 7. 11 are two rails that reach across the machine to stop jacks 5 in their
relative inclined position to give the back and front healds their proper elevation for
shuttle to pass through.

page_text: The tappet 8 is made to tread the healds softly, viz.; about ths of the revolutions
of the crank, returning empty quickly in about 3ths of the revolutions, by this means
the healds are worked softly, consequently there is less breakage of yarn, and a saving
of healds, and better quality of work is produced.
Figs. 3 and 4. I move the vertical levers A into inside of framing of loom, also the
slide plate D which gives motion to vertical levers A the vertical levers being
connected by straps from top of lever A to the back of the picker or to box spindle,
or. this slide and vertical lever may be fixed in any other position to suit various
classes of looms.
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 arrangement, construction and application of machinery for weaving on
the open shed principle as shown and described.
2. The picker regulator or shuttle stop motion as shown and described.
Dated this Zoun day of t
JOHN E. WALSH,
Crossley Street, Halifax, Agent for the Applicant.
JOHN E. WALSH,
Crossley Street, Halifax, Agent for the Applicant.