IMPROVEMENTS IN JIGGERS OR DUMMY' MACHINES USED IN THE MANUFACTURE OF LEATHER, ARTIFICIAL OR OTHERWISE.
Year: 1870

page_text: LETTERS PATENT to Edward Kitchin and Matthew Kitchin, both of
Leeds, in the County of York, for the Invention of "IMPROVEMENTS
IN JIGGERS OR DUMMY' MACHINES USED IN THE MANUFACTURE OF LEATHER,
ARTIFICIAL OR OTHERWISE.
"
Sealed the 6th June 1871, and dated the 7th December 1870.
PROVISIONAL SPECIFICATION left by the said Edward Kitchin and
Matthew Kitchin at the Office of the Commissioners of Patents,
with their Petition, on the 7th December 1870.
We, EDWARD KITCHIN and MATTHEW KITCHEN, both of Leeds, in the
County of York, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN "JIGGERS OR DUMMY' MACHINES USED IN THE MANUFACTURE
OF LEATHER, ARTIFICIAL OR OTHERWISE," to be as follows:-
The Invention consists in dispensing with the manual labour hitherto
attending the working of jiggers or dummy machines. By this arrange-

page_text: I
ment the stroke of the jigger or dummy machine may be readily altered
to suit the size or shape of the piece to be operated upon. The dummy
pole is hung in bearings of ordinary construction; at a suitable distance
from its axis we mount a radial arm in bearings carried by a beam or
other equivalent means. The radial arm and dummy pole are provided
with slot holes in which are fitted bushes, so as to slide freely; these are
so connected that any motion given to the radial arm is transmitted to
the dummy pole through the bushes. A reciprocating motion is given to
the radial arm by means of a connecting rod worked by some suitable
motive power. To the sliding bushes is attached by a rope or other
equivalent means (conducted thereto by guide pulleys) a treadle placed
so as to be readily worked by the attendant. By the movement of the
treadle by the foot of the attendant the sliding bushes may be raised or
lowered in the slot holes, producing thereby a longer or shorter stroke
or traverse of the jigger or dummy, as the size or shape of the leather
may require.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edward Kitchin and Matthew Kitchin in the
Great Seal Patent Office on the 7th June 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, EDWARD
KITCHIN and MATTHEW KITCHIN, both of Leeds, in the County of York,
send greeting.
"
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of December, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Edward Kitchin and Matthew Kitchin,
Her special licenco that wo, the said Edward Kitchin and Matthew
Kitchin, our executors, administrators, and assigns, or such others as
we, the said Edward Kitchin and Matthew Kitchin, our executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the

page_text: Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
*JIGGERS OR DUMMY' MACHINES USED IN THE MANUFACTURE OF LEATHER,
ARTIFICIAL OR OTHERWISE," upon the condition (amongst others) that
we, the said Edward Kitchin and Matthew Kitchin, our executors or
5 administrators, by an instrument in writing under our, or their, or one
of their hands and scals, should particularly describe and ascertain tho
nature of the said Invention, and in what manner the same was to ho
performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that we, the said Edward Kitchin and Matthew
Kitchin, do hereby declare the nature of our said Invention, and in
what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement, referenco being had
to the accompanying Drawings, and to the letters of reference marked
thereon, that is to say :-
-
.
The Invention consists in dispensing with the manual labour hitherto
attending the working of jiggers or dummy machines. By this arrange-
ment the stroke of the jigger or dummy machine may be readily altered
to suit the size or shape of the piece to be operated upon. The dummy
pole is hung in bearings of ordinary construction; at a suitable distance.
from its axis we mount a radial arm in bearings carried by a beam or
other equivalent means. The radial arm and dummy pole are provided
with slot holes, in which are fitted bushes, so as to slide freely; these
are so connected that any motion given to the radial arm is transmitted
to the dummy pole through the bushes. A reciprocating motion is
given to the radial arm by means of a connecting rod worked by some
suitable motive power. To the sliding bushes is attached by a rope or
other equivalent means (conducted thereto by guide pulleys) a treadle
placed so as to be readily worked by the attendant. By the movement
of the treadle by the foot of the attendant the sliding bushes may be
raised or lowered in the slot holes, producing thereby a longer or shorter
stroke or traverse of the jigger or dummy as the size or shape of the
leather may require.
And in order that our Invention may be more completely understood
we annex a Sheet of Drawings.

page_text: 8
a is the dummy pole hung in adjustable bearings b, which are of
ordinary construction; at a suitable distance from its axis c we mount
radial arms & in bearings e carried by the brackets for their equivalents.
The radial arms d and dummy pole a are provided with slot holes g
and h, in the slot holes g the bushes or slide blocks i are fitted; the b
slot hole / when required may also be provided with a bush or slide
block. The radial arms d and dummy pole a are connected by means
of the shaft or bar j, which passes through the bushes or slide blocks.
The connecting rod k is attached to the radial arm, as shewn at 1, and
to the crank pin m on the disc n. In this manner the required recipro- 1
cating motion is transmitted from the disc n to the radial arms d.
The crank pin m is made capable of adjustment in the T groove o,
whereby the stroke of the radial arms d may be varied. To the sliding
bushes or blocks i the ropes p are attached, these ropes are passed over
the guide pulleys q, and then connected at r; the single rope & is passed 1
on to the grooved wheel t and secured on it at u; z is another rope.
attached either to the grooved wheel or to a lever mounted on the
same shaft w, which is carried down and attached to a treadle y working
in bearings or centres &. The table 1, spring board 2, spring board
adjuster 3, and dummy arrangement 4, as shewn, are all of ordinary con-
struction. By the pressure of the foot of the attendant the treadle y is
moved downwards; by this motion the bushes or slide blocks i are caused
to rise in the slot holes g in the radial arms d simultaneously with the
bar or sliding block in the dummy pole, by doing so it will be readily
understood that the higher the blocks are raised the longer traverse or
stroke is produced at the end of the dummy pole carrying the dummy.
When the stroke or traverse of the dummy is required to be shortened
the attendant allows the treadle to rise to any required distance. The
bushes or blocks. i may be made of sufficient weight to slide down the
slots, or weights may be mounted on the bar or shaft ; to carry them
down to the bottom the moment the foot is released from the treadle,
thereby stopping the motion of the dummy pole.
0
.
Having now described the nature of our said Invention, and the
manner in which the same is to be performed, we do not limit ourselves
to the exact details and configuration of parts we have expressed and
shewn, as the same may of course be varied or modified without in any
way departing from our Invention; but what we do claim and desire to

page_text: be secured to us by Letters Patent is, the arrangement and combination
of parts for producing a variable traverse motion, substantially as and
for purposes herein set forth.
In witness whereof, we, the said Edward Kitchin and Matthew
Kitchin, have hereunto set our hands and seals, this Sixth day of
June, in the year of our Lord One thousand eight hundred and
seventy-one.