Improvements in "Dobbies" employed in Looms for Weaving.
Year: 1897

page_text: Date of Application, 31st Mar., 1897
Complete Specification Left, 28th Dec., 1897-Accepted, 29th Jan., 1898
PROVISIONAL SPECIFICATION.
Improvements in "Dobbies" employed in Looms for Weaving.
We, RALPH HARLING and JAMES HARLING, trading as Harling and Todd, of
Rosegrove Iron Works, Burnley, in the County of Lancaster, Machine Makers,
do hereby declare the nature of this invention to be as follows:-
-
This invention relates to "dobbies" employed in looms for weaving; the first
part of our invention having reference to the joints of the levers one of which
we make with a suitable boss to receive the end of the adjoining lever, but in
order to keep the joint in position a projecting horn or hook is made from one
lever which enters into a slot in the other lever by which lateral movement is
prevented whilst there is every freedom for oscillatory movement.
The "feelers" which are selected and operated by the pegging barrel and which
operate the hooks for setting in motion other levers for ruising the healds are
made alternately with a straight arm and a bent arm. The straight arm receives
the bottom end of the ordinary vertical needle which operates the top hook, whilst
the bent arm operates the lower hook, and as the arms work through grates they
are prevented from lateral or sidewise movement, and cannot possibly actuate the
wrong hook, consequently the dobby is made reliable in its action and can be
made to run at a high speed. The grate which keeps the arms of the "feclers"
apart is adjustable and removable and can be easily placed in position or removed.
The next part of our invention relates to the hook which rotates the pegging
barrel.
This hook we make in two parts connected by a stud and an overhanging lip
which by means of a flat spring keeps the lever rigid and yet capable of yielding
in case of fracture.
The third part of our invention has reference to means to be employed for
preventing the pegging barrel moving more than the required distance.
In carrying out this part of our invention we employ a lever with a projection
which enters into the notches of a wheel on the end of the pegging barrel shaft
by which the said pegging barrel is prevented from moving more than its allotted
distance.
Dated this 30th day of March 1897
COMPLETE SPECIFICATION.
Improvements in "Dobbies "employed in Loomis for Weaving.
We, RALPH HARLING and JAMES HARLING, trading as Harling and Todd, of
Rosegrove Iron Works, Burnley, in the County of Lancaster, Machine Makers,
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 "dobbies" employed in looms for weaving, our invon-
tion having reference to the joints of the levers one of which we make with a

page_text: suitable boss to receive the end of the adjoining lever, but in order to keep the
joint in position a projecting horn or hook is made from one lever which enters
into a slot in the other lever by which lateral movement is provented whilst
there is every freedom for oscillatory movement.
The "feelers
"which are selected and are operated by the pegging barrel and
which operate the hooks for setting in motion other lovers for raising the healds
are made alternately with a straight arm and a bent arm. The straight arm
receives the bottom end of the ordinary vertical needle which operates the top
hook, whilst the bent arm operates the lower hook, and as the arms work through
grates they are provented from lateral or sidewise movement, and cannot possibly
actuate the wrong hook, consequently, the dobby is made reliable in its action
and can be made to run at a high speed.
For the purpose of making our improvements clearly understood, we have
annexed the accompanying sheet of drawings which illustrate a front elevation
of a set of baulks and jack levers employed in a loom dobby. A represents the
baulk lever, and B the jack lever, C the top catch and D the bottom catch of
ordinary arrangement and construction, except with regard to the joints.
In this case the baulk lever is provided with studs E which fit into holes or
openings in the end of the hooks C, D, and also to the upper end of the jack
lever B, but in order to keep the joints in position and prevent lateral movement
a projecting horn or hook F is made from the baulk lever and also from the jack
lever, such hook entering into a slot G formed in the hooks and baulk lever as
shown in the drawings, whereby lateral movement is prevented, whilst there is
every freedon for oscillatory movement.
We would observe that the studs and horns and slots may be vice versa to the
arrangement shewn in the drawings.
The levers or feelers H and I which are selected and operated by the pegging
barrel in the ordinary manner and which levers operate the top and bottom
hooks C, D, for raising and lowering the healds. These said levers or feelers H
and I are made alternately with a horizontal arm and a bent arm I'. The
straight or horizontal arm H¹ receives the lower end of the ordinary vertical
needle J which operates the top catch C whilst the bent arm I' operates the lower
hook D and as the arms H and I work through grates they are prevented from
lateral or sidewise movement and cannot possibly actuate the wrong hook con-
sequently the dobby is made reliable in all its actions and can be made to run at
a very high speed. The grate which keeps the arm of the feclers apart, is adjus-
able and removable and can be easily placed in position and removed.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
Firstly. In the levers of dobbies, the formation of joints substantially as shewn
in the drawings and described in the Specification such joints comprising studs,
horns and slots for preventing sidewise movement.
Secondly. In dobbies employed in looms for weaving the horizontal arms H¹
and bent arms I arranged alternately for operating the upper and lower catches
arranged as illustrated in the drawings and described in the Specification.
Dated this 27th day of December. 1897.