Screw Shafts Employed in Gill Boxes and other like Machines.
Year: 1888

page_text: Date of Application, 27th Apr., 1888
Complete Left, 14th June, 1888
Complete Accepted, 20th July, 1888
Screw Shafts Employed in Gill Boxes and other like Machines.
I, ISAAC BAILEY, of Stockbridge Works, Keighley, in the County of York,
Commission Wool Comber, do hereby declare the nature of this invention to be as
follows:-
My invention has reference to the method of securing the lifting cams onto the
shafts of screws employed in gillboxes for operating fallers or gill combs. Hitherto
such cams have been attached to the screw shaft by cutting or forming a hole through
the said shaft for the reception of a stud or projection on the cam, but in practice it
was found that forming a hole through the shaft considerably weakened it, and
rendered it very liable to sudden breakage, consequently damaging the machine and
causing loss of time in repairing the breakages.
The object of my invention is to attach the cam to the screw shaft in a new manner,
by which means the cutting of the shaft is rendered unnecessary and breakages
avoided.
In carrying out my invention 1 weld or otherwise fix a flange or collar on the
screw shaft and on the face of such flange nearest to the screw, I bolt or otherwise
secure the cam.
This method of securing the cam not only prevents the breakages complained of,
but when the cam requires to be renewed, it is only necessary to unscrew the nuts
which fasten it to the flange which can be easily done without disturbing or removing
the screw from the machine, as is the case under the present arrangement. The
flange also answers as an auxiliary guide, with regard to the ordinary spring guide,
which if it should break or refuse to act, the faller or gill comb which is on the point
of being transferred from one set of screws to the other, would not fall out, but would
be kept in position by the said flange.

page_text: Screw Shafts Employed in Gillboxes and other like Machines.
I, ISAAC BAILEY, of Stockbridge Works, Keighley, in the County of York,
Commission Wool Comber, 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:-
My invention has reference to the method of securing the lifting cams onto the
shafts of screws employed in gill-boxes for operating fallers or gill combs. Hitherto
such cams have been attached to the screw shaft by cutting or forming a hole through
the said shaft for the reception of a stud or projection on the cam, but in practice it
was found that forming a hole through the shaft considerably weakened it, and
rendered it very liable to sudden breakage, consequently damaging the machine and
causing loss of time in repairing the breakages.
The object of my invention is to attach the cam to the screw shaft in a new manner
by which means the cutting of the shaft is rendered unnecessary and breakages
avoided.
In carrying out my invention, I weld or otherwise fix a flange or collar on the
screw shaft, and on the face of such flange nearest to the screw I bolt or otherwise
secure the cam.
In order that my said invention may be more fully understood, I will proceed to
describe the accompanying Drawings, wherein Fig. 1 is portion of a screw such as
those used in gillboxes. The screw has an extended shaft a, upon which I place two
halves of a flange b, with a boss c made secure on the said shaft by screwed nuts e, as
shewn in end view Fig. 2. The lifting cam is shewn at f, which is of ordinary
shape, and is placed into its proper position and made secure to the flange b by set
screws g.
Instead of the flange c being made in two parts and fastened upon the shaft by
the screwed nuts g. the said flange may be formed in one piece as shewn in Figs. 3
and 4, and secured onto the shaft a by means of welding, or it may be driven onto
the said shaft when the flange is hot, which upon cooling will contract and be fastened
to the shaft, as will be well understood, the lifting cam being secured to the flange
by the set screw as already explained. In Fig. 5 d represents the bottom row of
screws and the upper row of screws with a faller i shewn in position for being
lifted and resting upon the cams. It will be observed that each end of the faller,
whilst resting upon the cams, is behind and in contact with the inner surfaces of the
flanges if therefore the ordinary spring guide (which is employed to keep the
fallers in position) should break or refuse to act, the faller or gill comb, which is on
the point of being transferred from the lower to the upper set of screws, would not
now fall away in consequence of the ends of the fallers resting behind the flanges, as
indicated in Figs. 1 and 5

page_text: The method of securing the lifting cams as herein shewn not only prevents
breakages of the screws, hitherto weakened by cutting away the shaft, but when the
cam requires to be removed it is only now necessary to unscrow the nuts which fasten
it to the flanges, and this can be easily done without disturbing or removing the
screws from the machine.
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
Firstly -The means and method of securing cams onto screw shafts, substantially
as described and shewn in the drawings.
Secondly-The use of flanges such as 6 fixed on screw shafts of gillboxes and
other like machines for keeping the fallers in position if the ordinary spring guide
fails to act, substantially as shewn and described.
Dated this 13th day of June 1888
TASKER & CROSSLEY,
Halifax, Agents.