IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1883

page_text: LETTERS PATENT to William Tristram, of Bolton, Cotton Spinner and
Manufacturer, and William Westhead of the same place, both in the County
of Lancaster for an Invention of "IMPROVEMENTS IN LOOMS FOR WEAVING"
PROVISIONAL SPECIFICATION-left by the said William Tristram and William
Westhead at the Office of the Commissioners of Patents on the 18th May
1883.
"
WILLIAM TRISTRAM, of Bolton, Cotton Spinner and Manufacturer and WILLIAM
WESTHEAD, of the same place, both in the County of Lancaster. IMPROVEMENTS
IN LOOMS FOR WEAVING."
Our invention consists of an improved method of constructing the picking bowl,
with its attendant connections to the picking shaft or spindle, to ensure perfect
freedom of action; at the same time producing better lubrication, thereby reducing
the liability to wear, consequently the picking arms work freely and the shuttle is
thrown much more truly than hitherto; also the loss sustained by repeated breakage
of the securing bolt is minimised considerably.
The ordinary method of securing the picking bowl to the picking shaft or spindle,
is by providing a turned bolt of two sizes in diameter, on the large diameter of this
bolt is placed a revolving bowl for the wiper shaft or cams to operate, on the
smaller diameter of the aforesaid bolt is placed a metallic ferrule or collar, the head
of the bolt being outside the revolving bowl and the other end of the bolt passing
through the picking shaft or spindle, being secured with a nut. Through the outer
end being screwed for the nut, the part where the greatest strength is required, it
is the weakest; and with the rough usage to which they are subjected and the
leverage combined, it is an utter impossibility to make them strong enough, the
consequence is, that breakages are continually taking place, with their resultant
loss.
To overcome these evils we provide the picking shaft or spindle with a square
hole or otherwise, through which is passed an ordinary bolt, having a square part
under the head or otherwise to correspond with the hole in the picking shaft or

page_text: spindle, thus the strongest part of the bolt is placed in the part where the strain is
the greatest, thereby giving increased strength and stability. On this bolt is placed
a metallic bush or ferrule, of the requisite length to receive a conical picking bowl,
on which the latter revolves, one end being provided with a collar, placed between
the picking shaft or spindle, and the conical revolving picking bowl. To ensure
perfect lubrication, the metallic bush or ferrule is provided with a groove, placed
directly opposite the oil hole in the conical picking bowl. After the metallic bush
or ferrule and the conical bowl are placed in position, the bolt is provided with, an
ordinary nut and washer, which screws against the end of the bush, which is
slightly longer than the revolving bowl, thus the whole can be firmly secured
without interfering with the revolving action of the conical picking bowl.
The novelty of this invention is that, by the application of these improvements,
considerable time, labor and expense will be saved, besides prolonging the life of
the picking bowls considerably, a requirement long felt by the trade.
Another feature is, that an increased bearing surface for the revolving bowl is
obtained, being carried on the bush or ferrule, instead of the bolt as at present;
with the perfect means of lubrication; also that the increased strength is placed
where the greatest leverage takes place, thus providing against breakage.
Another is, that the conical bowl can be taken off and replaced without
displacing the bolt or its supporting bush, which is not the case with those at
present in use.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Tristram and William Westhead in the Great Seal Patent.
Office on the 16th November 1883.
WILLIAM TRISTRAM of Bolton, Cotton Spinner and Manufacturer, and WILLIAM,
WESTHEAD of the same place, both in the county of Lancaster
“IMPROVEMENTS IN
LOOMS FOR WEAVING"
Our Invention consists of an improved method of constructing the picking bowl
with its attendant connections to the picking shaft or spindle to ensure perfect
freedom of action, at the same time producing better lubrication, thereby reducing,
the liability to wear consequently the picking arms work freely and the shuttle is
thrown more truly than bitherto, also the loss sustained by repeated breakage of
the securing bolt is minimised considerably
The ordinary method of securing the picking bowl to the picking shaft or spindle
is by providing a turned bolt of two sizes in diameter on the large diameter of
this bolt is placed a revolving bowl for the wiper shaft or cams to operate on the
smaller diameter of the aforesaid bolt is placed a metallic ferrule or collar, the head
of the bolt being outside the revolving bowl and the other end of the bolt passing
through the picking shaft or spindle, being secured with a nut Through the outer
end being screwed for the nut, the part where the greatest strength is required it:
is the weakest, and with the rough usage to which they are subjected and the
leverage combined, it is an utter impossibility to make them strong enough, the
consequence is, that breakages are continually taking place with their resultant
loss.
To overcome these evils we provide the picking shaft or spindle with a square
hole or otherwise through which is passed an ordinary bolt having a square part
under the head or otherwise to correspond with the hole in the picking shaft or
spindle, thus the strongest part of the bolt is placed in the part where the strain is
the greatest, thereby giving increased strength and stability. On this bolt is placed
a metallic bush or ferrule of the requisite length to receive a conical picking bowl,
on which the latter revolves one end being provided with a collar placed between
the picking shaft or spindle and the conical revolving picking bowl. To ensure
perfect lubrication, the metallic bush or ferrule is provided with a groove placed
directly opposite the oil hole in the conical picking bowl After the metallic bush
or ferrule and the conical bowl are placed in position the bolt is provided with an
ordinary nut and washer which screws against the end of the bush which is slightly
longer than the revolving bowl thus the whole can be firmly secured without
interfering with the revolving action of the conical picking bowl.
In order that our invention may be fully understood we have attached hereto a
sheet of drawings représenting the various parts forming our improved picking
bowl with the means for securing the same to the picking spindle. In Fig. 1 of
the said drawings a represents the lower end of an ordinary picking spindle
provided with the oblong hole or slot 6 for receiving the bolt c the latter being
made square at d. behind the head e. thus placing the strongest part of the bolt
where the greatest strain takes place. On the bolt c is placed the metallic bush or
ferrule f. the outer end being turned down to receive the conical revolving picking
bowl g thereby an increased bearing surface for the revolving bowl is obtained,
the opposite end of the bush f. next to the picking spindle a. being provided with
the collar h. giving an increased bearing surface against the picking spindle The
outer or turned end of the bush or ferrule f. for receiving the picking bowl J. is
made slightly longer than the revolving bowl, thus when the bolt c bush f. and the

page_text: revolving bowl g are placed in position the whole are secured in position and to
the picking spindle by screwing the nut j. against the end of the bush or ferrule f.
the revolving bowl being free from pressure thus allowing it to revolve freely when
operated upon by the cam on the wiper shaft. In case it is desired to remove the
revolving picking bowl g. it can be performed without displacing either the bush f.
or bolt c. by simply taking off the nut j.
Fig. 2 is a side view of the picking bowl when secured in position to the picking
spindle a.
Fig. 3 is a perspective view of Fig. 2
Fig. 4 is a front view of picking spindle a with the head e of the bolt c removed
thus shewing the square part d in the oblong hole or slot b. We do not confine
ourselves to make the part d square as in some cases it may be made oblong or
other analogous forms.
For the purpose of ensuring. perfect lubrication to the bush or ferrule f. and the
revolving bowl g the latter is provided with the oil hole k. which is placed directly
opposite the groove in the bush f which is shewn fully in Fig. 5 In some cases
in addition to the groove in the bush f we provide the additional grooves m and
n extending both ways from the centre groove l as shewn in Fig. 6 or otherwise
thereby ensuring perfect lubrication the entire length of the bearing part of the
bush or ferrule f.
Having now fully set-forth and indicated the nature of our said Invention and
the manner in which we carry the same into practical effect we would have it to
be understood that we claim the improvements in the construction of the picking
bowl with the method of fixing the securing bolt also the means for lubricating
substantially as and for the purpose set forth and indicated hereinbefore and in
and by the accompanying drawings.
In witness whereof we the said William Tristram and William Westhead have
hereunto set our hands and seals this fifteenth day of November in the year of
our Lord One thousand eight hundred and eighty three.
ICHת lrז ז זזען