IMPROVEMENTS IN MACHINERY OR LETTERS
Year: 1882

page_text: LETTERS PATENT to John Thomas Grimshaw of Stockport in the county of
Chester, Hatter for an invention of "IMPROVEMENTS IN MACHINERY OR
LETTERS PATENT to John Thomas Grimshaw of Stockport in the county of
Chester, Hatter for an invention of "IMPROVEMENTS IN MACHINERY OR
APPARATUS FOR PARING THE CURLS OF HAT BRIMS
PROVISIONAL SPECIFICATION left by the said John Thomas Grimshaw
at the Office of the Commissioners of Patents on the 3rd June 1882.
JOHN THOMAS GRIMSHAW of Stockport, in the County of Chester, Hatter,
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR PARING THE CURLS OF HAT
BRIMS
"
This invention relates to improvements in machinery or apparatus for paring
the curls of hat brims whereby the paring is effected in a more simple, and certain
or regular manner than hitherto.
In carrying out my invention I employ a "shape" or guide the inner circum-
ference corresponding in shape or nearly so to the brim of the hat and the outer
circumference or periphery corresponding in shape to the shape to be given to the
edge of the curl; the shape or guide oscillates on a stud or pivot. The cutter is
mounted on a sliding tool-holder provided with a guide wheel or bowl and a spring
arrangement for keeping the edge of the said guide wheel or bowl against the outer
edge of the "shape"; the tool holder also carries a presser foot for keeping down
the curl of the brim, and a suitable spring attachment may be employed for bearing
against the underside of the curl so as to keep the curl against the presser foot
whereby the paring or cutting is more easily effected. The slide or bed in which
the tool holder works is curved on its surface so as to raise the cutter as it is moved
towards the centre of the side of the brim and to allow it to fall again in
completing the stroke whereby the cutter follows the swell of the curl of the
hat brim.
The operation of the apparatus is as follows:-
"
One side of the brim of the hat is pressed against the inner edge or circum-
ference of the "shape" and the tool-holder carrying the cutter is moved round
the outer circumference of the shape thereby cutting or paring one half of the
edge of the curl to the required shape the oscillating notion of the "shape
securing a regular "paring" of the curl; the hat is then turned so as to bring the
opposite side of the curl against the shape and the tool holder moved back and
the operation repeated so as to complete the paring of the curl.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Thomas Grimshaw in the Great Seal Patent Office on the
1st December 1882.
JOHN THOMAS GRIMSHAW of Stockport in the county of Chester Hatter
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR PARING THE CURLS OF HAT
BRIMS
This invention relates to improvements in machinery or apparatus for paring
the curls of hat brims whereby the paring is effected in a more simple and certain
or regular manner than hitherto,
In carrying out my invention I employ a "shape" or guide the inner circum-
ference corresponding in shape or nearly so to the brim of the hat and the outer
circumference or periphery corresponding in shape to the shape to be given to the
edge of the curl; the shape or guide oscillates on a stud or pivot. The cutter
is mountod on a sliding tool holder provided with a guide wheel or bowl and
a spring arrangement for keeping the edge of the said guide wheel or bowl against
the outer edge of the "shape"; the tool holder also carries a presser foot for
keeping down the curl of the brim. The slide or bed in which the tool holder
works is curved on its surface so as to raise the cutter as it is moved towards the
centre of the side of the brim and to allow it to fall again in completing the stroke
whereby the cutter follows the swell of the curl of the hat brim.
In order to enable my invention to be better understood I will proceed to
describe the same by reference to the accompanying drawing in which figure 1 is
a plan and figure 2 a longitudinal section of a machine or apparatus for paring the
curls of hat brims constructed according to my invention; figure 3 is a plan of the
underside of the same. Similar letters in all the figures represent similar parts.
«
A is a bedplate on which is fitted the "shape" or guide a, a¹, the inner circum-
ference a, of which corresponds in shape or nearly so with the brim of the hat, the
outer circumference or periphery a', corresponding in shape with the shape to be
given to the edge of the curl of the hat brim; b, is the stud or pivot on which the
shape" or guide a, a¹, oscillates; c, is the knife or cutter mounted on the sliding
tool holder d, which slides on the arm or carrier e, pivotted at e', and carrying the
rollers f, f, for the purpose hereinafter described. f₁, is a lever for lifting the knife,
and 9, is a spring for pressing down the knife through the felt at the commence-
ment of the operation; g', is the guide wheel or bowl pivotted on the tool holder d,
and guiding the same against the periphery a', of the "shape or guide; h, is a
spring which presses the tool holder d, towards the "shape" so as to keep the edge
of the bowl gl, against the outer edge a¹, of the " shape"; i, is the presser foot on
the tool holder for keeping down the curl of the hat brim; j, j¹, slide or bed in
which the rollers f, f, of the tool holder work, the slide or bed being curved or
inclined on the surface so as to raise the toolholder as it is moved towards the
centre and to allow it to fall again in completing the stroke whereby the cutter
follows the swell of the curl of the hat brim; k, is a table on which the hat is
placed.
The operation of the machine is as follows:
"
The hat, the curl of the brim of which is to be pared, is placed on the table k,
one side of the brim of the hat being pressed against the inner edge or circum-
ference a, of the "shape"; the tool holder d, and knife c, are then adjusted in
position at B, (figure 1) and the spring g, will press the point of the knife c, through
the felt of the curl of the hat brim; the tool holder is then moved round the outer
circumference a³, of the "shape" thereby cutting or paring one half of the edge of
the curl to the required shape, the regular paring of the curl being secured by the

page_text: oscillation of the "shape" on its pivot b, which causes the cutter to follow the
shape of the curl of the brim; and the inclined or curved slide or bed j, j', causes
the tool holder and cutter to follow the swell of the curl of the hat brim ; one half
of the curl being thus pared the hat is turned so as to bring the opposite side of
the curl against the "shape"; the tool holder is moved back to the point B, and
the hereinbefore described operation is repeated so as to complete the paring of the
curl.
Having thus described my said Invention and the best means I am acquainted
with for carrying the same into effect I wish it to be understood that What I
claim is
Firstly. The improved machine for paring the curls of hat brims arranged and
operating as herein before described and represented in the accompanying drawing.
Secondly. In a machine for paring the curls of hat brims the use of an oscillating
shape" such as a a¹, by which the edge of the brim of the hat forms the guide
for paring the curl as herein before described and represented in the accompanying
drawing.
"
.
Thirdly. In a machine for paring the curls of hat brims the combination with
the knife or cutter of a spring for forcing the knife through the felt of the brim as
and for the purposes hereinbefore described and represented in the accompanying
drawing.
Fourthly. In a machine for paring the curls of hat brims the combination with
an oscillating "shape" of a curved bed or slide for raising and lowering the tool
holder as and for the purposes hereinbefore described and represented in the
accompanying drawing.
In Witness whereof I the said John Thomas Grimshaw have hereto set my
hand and seal this twenty ninth day of November in the year of our Lord
one thousand eight hundred and eighty two