CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS FOR GRINDING OR SETTING DOCTORS' USED IN CALICO AND OTHER SIMILAR PRINTING MACHINERY
Year: 1853

page_text: Sealed the 28th November 1853, and dated the 13th September 1853.
PROVISIONAL SPECIFICATION left by the said Adolphus Sington
at the Office of the Commissioners of Patents, with his Petition,
on the 13th September 1853.
I, ADOLPHUS SINGTON, of Manchester, in the County of Lancaster,
Merchant, do hereby declare the nature of the said Invention for
"CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS FOR GRINDING
OR SETTING DOCTORS' USED IN CALICO AND OTHER SIMILAR PRINTING
MACHINERY" to be as follows:-
Hitherto the edges of such "doctors" have been straightened or set
by hand, and by grinding them by means of a stone, which operation
has been found both tedious and inaccurate. My Invention consists
of a small apparatus for cutting or planing the said edges, whereby
both time and labor are economised, and a much more true and accu-

page_text: rate edge obtained. The apparatus which I employ consists of a frame
grooved or fluted upon the top in order to receive the "doctor," which
is secured thereto by clamps or fastenings at each end. The apparatus
is furnished with a cutting tool, which is actuated by means of a chain
connected to a pulley or otherwise, to which rotary motion is commu-
nicated from a winch handle (or driving pulley) by means of spur
gearing. After being thus cut, straightened, or set, the "doctors"
merely require one or two touches of a stone to remove the "burr" left
by the cutting process; they are then ready for use.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Adolphus Sington in the Great Seal Patent Office
on the 11th March 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
ADOLPHUS SINGTON, of Manchester, in the County of Lancaster, Mer-
chant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of September, in the
year of our Lord One thousand eight hundred and fifty-three, in the
seventeenth year of Her reign, did, for Herself, Her heirs and succes-
sors, give and grant unto me, the said Adolphus Sington, Her especial
license that I, the said Adolphus Sington, my executors, administrators,
and assigns, or such others as I, the said Adolphus Sington, my ex-
ecutors, 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 Channel Islands, and Isle of Man, an Invention for "CER-
TAIN IMPROVEMENTS IN MACHINERY OR APPARATUS FOR GRINDING OR SETTING
DOCTORS USED IN CALICO AND OTHER SIMILAR PRINTING MACHINERY," which
has been communicated to me from abroad, upon the condition (amongst
others) that I, the said Adolphus Sington, by an instrument in writing
under my hand and seal, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be

page_text: 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 I, the said Adolphus Sington, do hereby
declare the nature of the said Invention, and in what manner the same.
is to be performed, to be particularly described and ascertained in and
by the following statement and accompanying Drawing (that is to say):
These improvements in machinery or apparatus for grinding or
setting the edges of "doctors" relate to the well-known instrument so
called, and used in calico and other printing machinery for the purpose
of clearing or cleaning the printing rollers. Hitherto the edges of such
"doctors" have been straightened or set by hand, and grinding them
by means of a stone, which operation has been found both tedious and
inaccurate. This invention consists in the employment or use of a
small apparatus for setting, cutting, or grinding the said edges, whereby
both time and labor are economized, and a much more true and accu-
rate edge obtained. The apparatus employed consists of a frame
grooved or fluted upon the top, and carrying a travelling carriage
furnished with a setting tool, which is actuated by means of a chain and
pulley or otherwise, to which rotary motion is communicated from a
winch handle (or driving pully) by means of spur gearing; the "doctor"
secured by clamps or fastenings at each end of the frame is raised to
meet the tool, or lowered, as occasion may require. After being thus
planed, straightened, or set, the "doctors" merely require one or two
touches of a stone or "hone" to remove the "burr "left by the former
process; they are then ready for use.
There is also an arrangement
for giving to the "doctor" a concave or convex edge, as necessity may
require.
Such is the general description of the Invention, but the peculiar
arrangement of the several parts I do not confine myself to, as the
same advantageous effect may be produced by lowering the setting tool
to the tool.
to the surface of the "doctor," as by raising the "doctor"
But in order that the Invention may be more readily explained in detail,
and perfectly understood, I have attached to these presents a Sheet of
"

page_text: Drawings hde upon a scale of about three inches to a foot, and re-
presenting clearly the substantial features of this Invention.
Fig. 1, represents a longitudinal elevation of the apparatus; Fig. 2,
a plan or horizontal view; Fig. 3, an end elevation; and Fig. 4, a
section, taken through the dotted line A, B, in Figs. 1, and 3, and
shewing the method of springing the upper part of the framework
when it is required to give a curved surface or edge to the "doctor," as
also the spring by which the setting or straightening tool is elevated to
admit of its return. Corresponding letters of reference are marked
throughout the various Figures upon similar parts of the apparatus.
a, a, a, a, represent the upper or grooved frame work; b, the travelling
carriage; c, the plane and setting tool; and d, d, the "doctor." It
will be observed that the travelling carriage and setting tool may be
put in motion by the winch handle e, in connection with the appropriate
gearing and driving pully f, and the chain g, secured on one side to the
ratchet or tightening wheel j, and on the other by means of a pin to
the small projection k, on the travelling carriage. I, and m, are two
stops, confining the travelling carriage to the limits of its traverse
upon each reverse motion, when the carriage will be brought to the
stop ; a small tumbler n, presses upon the tongue piece o, and with
the leverage in connection with the ratchet and wheel q, gives a suffi-
cient part of a revolution to the bevel gearing r, r, and consequently
to the screws s, s, by which means the "doctor" is raised to a proper
height for the setting tool on its return upon the succeeding revolution
to take off another surface. t, t, are beds for the reception of the
"doctor ;" and u, u, screws for fastening or clamping the same. v, is a
hole for the insertion of a lever for the purpose of springing the upper
or grooved bed. w, is a graduated plate by which to regulate the
springing of the said bed.
. Having thus described the Invention as communicated to me, I wish
it to be distinctly understood that I claim the application, employment,
or use of the above particularly described apparatus or machine for the
purpose of planing, setting, or straightening the edges of "doctors," aš
herein described and set forth, not limiting or confining myself to the

page_text: precise arrangements or dimensions of the several details of the same,
as exhibited in the Drawing attached to these presents, nor to one par-
ticular kind of setting tool, as it may sometimes be desirable to employ
various kinds, such as a sharp, serrated, rough, or bevelled tool, or even
one acting in conjunction with emery or other fine grinding or setting
substitutes.
In witness whereof, I, the said Adolphus Sington, have hereunto
set my hand and seal, the Ninth day of March, in the year of
our Lord One thousand eight hundred and fifty-four.
ADOLPHUS SINGTON.