Improvements in and connected with the Drop Box Motions of Looms for Weaving.
Year: 1893

page_text: Date of Application, 26th Sept., 1893
Complete Specification Left, 23rd June, 1894-Accepted, 28th July, 1894
PROVISIONAL SPECIFICATION.
Improvements in and connected with the Drop Box Motions of
Looms for Weaving.
We FRANK LEEMING, Manager and GEORGE HODGSON, Machine Maker both
of Thornton Road, Bradford in the County of York, do hereby declare the nature
of this invention to be as follows:-
This invention relates to further improvements in looms for weaving such as are
referred to in Specifications of Letters Patent No. 15484 and No. 15979 both of
the year 1884 and No. 16110 of the year 1886 the object of the present invention
being to enable the weaver or attendant on the loom to reverse the pattern, and
find a required pick with much greater facility than heretofore, and also to simplify
the building, or construction of the indicating or pattern chain.
According to this invention the star wheels are made similar to two segment
wheels cast together, the teeth of one segment being on the opposite side, and out
of line with the teeth of the other segment.
The part of each segment of star wheel which acts as a finishing or last tooth to
the motion given to it by the operating teeth of the clutch wheel in the centre
barrel is cut away to about one half its thickness.
Then is formed a locking rim on each side of the operating teeth of the clutch
wheel which is driven by and slides in the centre barrel on the crank or tappet
shaft of the loom. These two locking rims have each a recess behind the last of
the operating teeth of the clutch wheel, into which the half tooth in one of the
segments of the star wheel above referred to engages.
The action is as follows:-When the clutch wheel is moved so that its operating
teeth are in line with the teeth of one segment of the star wheel nearly half a turn
is given the star wheel, and the recess in the rim of the clutch wheel acting
upon the aforesaid half tooth of the star wheel completes the half turn of latter
and causes the other segment of star wheel to lock on centre barrel.
So long as the clutch wheel is retained in this position the star wheel remains
locked and no further movement can take place.
It will be seen that a like peg or link of the indicating chain or pattern always
commands the same box.
Dated this 22nd day of Santamban 1902
COMPLETE SPECIFICATION.
Improvements in and connected with the Drop Box Motions of
Looms for Weaving.
We FRANK LEEMING, Manager and GEORGE HODGSON, Machine Maker both
of Thornton Road, Bradford in the County of York, 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 further improvements in looms for weaving such as
are referred to in Specifications of Letters Patent No. 15484 and No. 15979
both of the year 1884 and No. 16110 of the year 1886 the object of the present
Price 81

page_text: Fig. 3 is a front view of one of the improved star wheels.
Fig. 4 is an end view of Fig. 3.
According to this invention the star wheels 1. 1 are made similar to two segment
wheels 2, 2 cast or fixed together, the teeth of one segment 2 being on the
opposite side, and out of line with the teeth of the other segment 2ª.
The part 3 of each segment 2, 2 of the star wheel 1. 1 which acts as a
finishing or last tooth to the motion given to it by the operating teeth of the
clutch wheel 4 in the centre barrel 5 is cut away to about one half its thickness
as at 6.
There is formed a locking rim 7-7 on each side of the operating teeth of the
clutch wheels 4 which are driven by and slide in the centre barrel 5 on the crank
or tappet shaft 8 of the loom. The two locking rims 7.7 have each a recess 9
behind the last of the operating teeth of the clutch wheels 4. 4 into which the
half tooth 6 in one of the segments 2, 2" of the star wheels 1. 1 above referred to
engages.
The action is as follows:-When one of the clutch wheels 4 is moved by the
ordinary indicating mechanism so that its operating teeth are in line with the
teeth of one segment 22 (see top part of Fig. 2) and come in contact with the first full
tooth 3 and nearly half a turn is given the star wheel 1 and the recess 9 at the
back of the last tooth in the rim of the clutch wheel 4 acting upon the aforesaid
half tooth 6 of the star wheel 1 completes the half turn of latter and causes the
other segment 2 of star wheel 1 to lock on the centre barrel 5.
So long as the clutch wheel 4 is retained in this position the star wheel 1 remains
locked and no further movement can take place, as is seen on reference to the lower
part of Fig. 2 where if the clutch wheel 4 continues to revolve in the same position
as shewn it will miss the teeth of the segment 2" and no change takes place.
It will be seen that a like peg, card or link of the indicating chain or pattern
always commands the same box.
Having now particularly described the nature of our said invention and in what
manner the same is to be performed we declare that what we claim is :-
1. The general construction, arrangement and combination of parts constituting
the improved apparatus herein fully described and as illustrated by Figs. 1 and 2
of the accompanying drawings.
2. The segments 2, 2 having locking pieces cast or fixed together with the
teeth of one segment out of line with the teeth of the other segment and with the
last or finishing tooth of each segment cut away as and for the purpose herein
described and as illustrated by the accompanying drawings.
3, The clutch wheels 4, 4 having the recess 9 behind the last operating tooth, and

page_text: the locking rims 7. 7 one on each side of the operating teeth as and for the purpose
herein described and as illustrated by Fig. 2 of the accompanying drawings.
Dated this 22nd day of June 1894.
FRANK LEEMING,
GEORGE HODGSON,
By their Agent, Walter Brierley,
Penny Bank Chambers, Halifax.