IMPROVEMENTS IN THE METHOD OF AND MACHINERY OR APPARATUS FOR MANUFACTURING OVAL AND IRREGULAR SHAPED ARTICLES
Year: 1868

page_text: LETTERS PATENT to William Boulton, of Providence Foundry,
Burslem, in the County of Stafford, Engineer and Iron Founder,
for the Invention of "IMPROVEMENTS IN THE METHOD OF AND MACHINERY
OR APPARATUS FOR MANUFACTURING OVAL AND IRREGULAR SHAPED ARTICLES
Sealed the 23rd April 1869, and dated the 26th October 1868.
PROVISIONAL SPECIFICATION left by the said William Boulton
at the Office of the Commissioners of Patents, with his Petition,
on the 26th October 1868.
I, WILLIAM BOULTON, of Providence Foundry, Burslem, in the
County of Stafford, Engineer and Iron Founder, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN THE METHOD OF
MACHINERY OR APPARATUS FOR MANUFACTURING OVAL AND IRREGULAR SHAPED
ARTICLES OF POTTERY," to be as follows:-
This Invention consists in giving an eccentric or irregular motion to
articles made by the "jigger" or "whirler," which may be performed
or carried into practical effect in the following manner :-

page_text: I fix two oval or irregular "pulleys or cams on the "jigger" or
"whirler" spindle, the same to be brought in contact with a round
pulley by a spring or balance weight, the carrier of the said round pulley
being stationary, the neck and toe block of the jigger spindle being made
to slide, give a motion to the spindle according to the shape of the pulley
on the said spindle; or I allow the neck and toc blocks to be stationary
and fix an eccentric chuck on the top of the "jigger" or "whirler"
spindle to give an irregular motion to the article being made; or I fix
an eccentric on the spindle bringing it in contact with a slide to which
the profile to form the article is attached, giving this an irregular
motion; or by fixing two eccentrics on the "jigger" or "whirler"
spindle to give irregular motion to same or to allow the article to be
stationary or on slides and the profile to revolve with a slide or slides
to regulate the shape of the article.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Boulton in the Great Seal Patent Office
on the 24th April 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
BOULTON, of Providence Foundry, Burslem, in the County of Stafford,
Engineer and Iron Founder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-sixth day of October, in the year
of our Lord One thousand eight hundred and sixty-eight, in the
thirty-second year of Her reign, did, for Herself, Her heirs and succes-
sors, give and grant unto me, the said William. Boulton, Her special
licence that I, the said William Boulton, my executors, administrators,
and assigns, or such others as I, the said William Boulton, my
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,
excrcise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IM-
PROVEMENTS IN THE METHOD OF AND MACHINERY OR APPARATUS FOR MANU-
FACTURING OVAL AND. IRREGULAR SHAPED ARTICLES OF POTTERY," upon the
condition (amongst others) that I, the said William Boulton, my

page_text: executors or administrators, by an instrument in writing under my,
or their, or one of their hands and scals, should particularly describe
and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the same to be filed in
the Great Scal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Boulton, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement in writing, and on reference being had to the
accompanying Sheet of Drawings, that is to say :-
This Invention consists in giving an eccentric or irregular motion to
articles made by the "jigger or "whirler," which may be performed
or carried into practical effect in the following manner :-
I fix two oval or irregular pulleys or cams on the " jigger or
"whirler spindle, the same to be brought in contact with a round or
friction pulley by a spring or balance weight, the carrier of the said
round pulley being stationery, the neck and toe blocks of the jigger
spindle being made to slide, give a motion to the spindle according to
the shape of the pulley on the said spindle; or I allow the neck and
toe blocks to be stationary and fix an eccentric chuck on the top of the
"jigger or "whirler" spindle to give an irregular motion to the
article being made; or I fix an eccentric on the spindle, bringing it in
contact with a slide to which the profile to form the article is attached,
giving this an irregular motion; or by fixing two eccentrics on the
jigger or "whirler" spindle I propose to give irregular motion to
same or to allow the article to be stationary or on slides and the profile
to revolve with a slide or slides to regulate the shape of the article.
"
Such being the nature of my said Invention for "Improvements in
the Method of and Machinery or Apparatus for Manufacturing Oval and
Irregular Shaped Articles of Pottery," I will now proceed to describe
more in detail the manner in which the same is to be or may be
performed or carried into practical effect, and in order that the same may
be distinctly understood I have annexed hereunto a Sheet of Drawings
illustrative thereof, and have marked the same with figures and letters
of reference corresponding with those in the following explanation
thereof, that is to say,-

page_text: Figure 1 on the accompanying Sheet of Drawings is a plan view,
Figure 2 a front elevation, and Figure 3 a side elevation of my
improved apparatus.
a, a, is the upright spindle; b, b, the pulleys or cams on the said
spindles; c, c, the friction pulleys; d, d, the footstep and neck block;
e, e, the spring to keep the two pulleys in point of contact; ff, the
driving pulley, which is made either flat or grooved and is to be driven
by means of an endless driving belt or band such as is described in the
Specification of certain former Letters Patent granted to me on the
23rd day of November 1867, No. 3319, or by any other equivalent and
suitable means; g, g, is the jigger head on which the dish or other
article is made; h, the profile to form the same; i, the lever lifting
from joint on which the profile is fixed.
Having now described the nature and object of my said Invention
for Improvements in the Method of and Machinery or Apparatus for
Manufacturing Oval and Irregular Shaped Articles of Pottery," together
with the manner in which the same is to be or may be performed or
carried into practical effect, I would remark in conclusion that I do
not limit myself to the precise details and configurations of the separate
parts described and shewn on the Drawings, as it is obvious that the
same may be varied or modified without departing from the principle
feature of my Invention, which is the application and use of an improved
apparatus for and method of making oval or irregular shaped articles
of pottery from a "jigger" or "whirler," substantially as hercin-before
described and as shewn on the accompanying Sheet of Drawings.
In witness whereof, I, the said William Boulton, have here-
unto set my hand and seal, this Twentieth day of April,
in the year of our Lord One thousand eight hundred and sixty-
ninc.