IMPROVEMENTS IN APPARATUS OR APPLIANCES EMPLOYED IN GRINDING
Year: 1874

page_text: LETTERS PATENT to Robert Daglish and George Heaton Daglish, of
St. Helen's, in the County of Lancaster, Engineers, for the Inven-
tion of "IMPROVEMENTS IN APPARATUS OR APPLIANCES EMPLOYED IN GRINDING
Sealed the 11th September 1874, and dated the 14th March 1874.
PROVISIONAL SPECIFICATION left by the said Robert Daglish and
George Heaton Daglish at the Office of the Commissioners of
Patents, with their Petition, on the 14th March 1874.
We, ROBERT DAGLISH and. GEORGE HEATON DAGLISH, of St. Helen's,
in the County of Lancaster, Engineers, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN APPARATUS OR APPLIANCES EMPLOYED
IN GRINDING AND SMOOTHING GLASS," to be as follows:-
This Invention, which relates to the construction, arrangement, and
combination of parts of mechanism, has for object the production of a
true and smooth surface on sheets of glass with small expenditure of
power, reduced wear of working parts, increased facility for inspection
and repairs, and less complexity of construction than in apparatus here-
tofore used.

page_text: To obtain the results above described we construct our said apparatus
as follows:-A table of convenient height, shape, and construction is
provided, on which the sheet of glass to be operated upon is adjusted
and secured in position. Grinding and smoothing runners of ordinary
construction are provided and operated by a bar connected at each end
to a crank driven by gearing on a horizontal driving shaft. We prefer
that the driving shaft should be fitted beneath the table; it may however
be above. To allow of adjustment of the motion of the runners to the
requirements of the work we form the operating bar with a closed slot
throughout the greater part of its length. We fit the said bar with
sliding pieces, and by preference provide each sliding piece with six
holes arranged radially. Each runner is adjusted in position laterally
by placing the working pin which rises from its centre into one or other
of the holes in the sliding piece. Longitudinal adjustment is obtained
by sliding the piece along the bar. The runners rest freely upon the
glass to be ground or smoothened, and receive the circular motion from
the driving shaft through the sliding pieces, bar, and cranks. Emery or
other cutting substance is used, and the runners are weighted in any
ordinary manner.
It is to be observed that the special features of novelty of apparatus 1
or appliances constructed under our Invention, apart from the general
arrangement, consist,―
First. In driving both cranks by gearing from the first motion shaft.

page_text: our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Robert Daglish and George Heaton
Daglish, Her special license that we, the said Robert Daglish and George
Heaton Daglish, our executors, administrators, and assigns, or such others
as we, the said Robert Daglish and George Heaton Daglish, our executors,
administrators, and assigns, should at any time agree with ând 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 "IMPROVEMENTS IN APPARATUS OR
APPLIANCES EMPLOYED IN GRINDING AND SMOOTHING GLASS;" upon the condition.
(amongst others) that we, the said Robert Daglish and George Heaton
Daglish, our executors or administrators, by an instrument in writing
under our, or their, or one of their hands and seals, 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 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 Robert Daglish and George Heaton
Daglish, 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, reference being had
to the accompanying Sheet of illustrative Drawings, and to the figures.
and letters marked thereon, that is to say :-
This Invention, which relates to the construction, arrangement, and
combination of parts of mechanism, has for its object the production of a
true and smooth surface on sheets of glass with small expenditure of
power, reduced wear of working parts, increased facility for inspection
and repair, and less complexity of construction than in apparatus here...
toforc used.
To obtain the results above described we construct our said apparatus
as follows: A table of convenient shape, height, and construction is.
provided, on which the sheet of glass to be operated upon is adjusted
and secured in position. Grinding and smoothing runners of ordinary.
construction are provided and operated by a bar connected at each end
to a crank driven by gearing on a horizontal driving shaft. We prefer
that the driving shaft should be fitted beneath the table; it may

page_text: of construction, the bush which fits on one of the crank pins is allowed
a motion in the direction of the length of the bar by means of a slot.
With apparatus or appliances constructed as above described a series
of machines may be driven from one shaft, or machine may be made
double by using three crank shafts and two bars, the centre counter-
shaft carrying the stationary bushes, and the outside ones the movable
bushes.
The above apparatus or appliances may be used to grind substances
other than glass.
Having now described the nature of the said Invention, and particu-
larized the same, we claim,-
First. Driving the crank shafts h direct from the shaft k, substantially
as described and illustrated.
Second. The combination of the bar and sliding pieces e, substantially
as described and illustrated for the purposes set forth.
Third. The construction and arrangement of apparatus or appliances
for grinding or smoothing glass, substantially as described and illustrated
for the purposes set forth.
In witness whereof, I, the said George Heaton Daglish, have here-
unto set my hand and seal, the Eleventh day of September, in
the year of our Lord One thousand eight hundred and seventy-
four.
GEORGE HEATON DAGLISH. (L.S.)
In the presence of