IMPROVEMENTS IN SWELLS FOR SHUTTLE BOXES
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said William Haythornthwaite
at the Office of the Commissioners of Patents on the 6th February 1882.
WILLIAM HAYTHORNTHWAITE of Blackburn in the County of Lancaster
"IMPROVEMENTS IN SWELLS FOR SHUTTLE BOXES
My Invention relates to the swells of shuttle boxes for looms, my object being
to provide bearings for the swells that will be very durable and in which the wear
can be readily taken up. I make one of my improved bearings by forming in the
base of the swell which I make of sufficient width, a groove of angular or semi-
circular section or nearly so and I secure to the back board a bracket on which is
an angular or rounded projection that fits in the groove in the base of the swell
and thus forms the bearing on which the swell vibrates: the base of the swell
enters a recess in the back board.
Or I form a semicylindrical or angular projection at the base of the swell instead
of the groove and make the groove in the bracket. I also make a bearing by
forming a taper projection at the base of the swell of more than half a circle in
section and form a recess in the bracket of corresponding taper so that by raising
the bracket any wear may be taken up and a good bearing always secured. Or
the taper projection may be on the bracket and the taper recess in the base of the
swell.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Haythornthwaite in the Great Seal Patent Office on the
5th August 1882.
WILLIAM HAYTHORNTHWAITE of Blackburn in the County of Lancaster
"IMPROVEMENTS IN SWELLS FOR SHUTTLE BOXES."
My Invention relates to the swells of shuttle boxes for looms, my object being
to provide bearings for the swells that will be very durable and in which the wear
can be readily taken up: I make my improved bearings by forming a taper or
conical projection at the base of the swell of more or less than half a circle or a
complete circle in section and I form a recess in the bracket of corresponding taper
into which the projection fits so that by raising the bracket any wear may be
taken up and a good bearing always secured. I make the base of the swell, by
preference, considerably wider than the swell to form a sufficient bearing: the
taper projection may be on the bracket and the taper recess in the base of the
swell.
And in order that my Invention may be fully understood and readily carried
into effect I will describe the accompanying two Sheets of Drawings reference
being had to the Figures and letters marked thereon.
Fig. 1 is an elevation of a swell at the base of which is a conical pin a that
enters a recess of corresponding taper in the bracket b which is secured to the
-backboard_or_other_part of the slay by bolts and screws: Fig. 2 is a plan of the
same. When the bearing becomes worn the bracket is moved upward far-
enough to take up the wear in the bearing.
Fig. 3 is an elevation of a swell in the base of which is a taper hole that fits on
a conical pin on the bracket.
When the bearing becomes worn the bracket is moved upward till the piu is
moved into the recess in the base of the swell far enough to take up the wear in
the bearing.
By this means when a bearing has worn loose it can be made good in an instant
without taking off the swell or the bracket.
Figs. 4 and 5 are an elevation and plan of a swell, a¹ is the base of the swell
in which is formed a conical recess open at one side: this recess fits on a taper
pin b¹ of more than half a circle in section.
On Fig. 6 the base of the swell is recessed as in Fig. 4 but the taper projection
is connected to the bracket along the whole of its length.
Fig. 7 shows a swell the base of which forms a taper pin which is fitted in a
taper recess in the bracket: the bracket is moved to make good the bearing when
it has become worn as above described.
Fig. 8 shows a swell the base of which forms a taper pin that has its bearing
partly in the backboard and partly in the bracket which in this case has a recess
of less than half a circle in section.
Fig. 9 shows a swell with semicircular taper recess at base fitting on taper pin
and bearing partly in the back board. Although I have only shown one bracket
for a swell, two brackets, each having a taper recess or projection may be used
with corresponding projections or recesses at the base of the swell: the brackets
would be moved towards each other to make good the bearing when worn.
Having stated the nature of my Invention and described the manner of
performing the same.

page_text: I declare Ca
The improved bearing substantially as and for the purpose herein shown and
described.
In witness whereof I the said William Haythornthwaite have hereunto set
my hand and seal this Third day of August One thousand eight hundred
and eighty two.
W. HAYTHORNTH WAITE. (L.S.)