IMPROVEMENTS IN MACHINERY FOR SEPARATING AND RIDDLEING POTATOES
Year: 1875

page_text: LETTERS PATENT to Ephraim Harrison Griffin, of South Duffield,
near Selby, in the County of York, Farmer, for the Invention of
PROVISIONAL SPECIFICATION left by the said Ephraim Harrison
Griffin at the Office of the Commissioners of Patents, with his
Petition, on the 30th December 1875.
I, EPHRAIM HARRISON GRIFFIN, of South Duffield, near Selby, in the
County of York, Farmer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MACHINERY FOR SEPARATING AND RIDDLEING
POTATOES," to be as follows:—
The machine is fixed in or upon a frame of wood, and consists of two
riddles of different sizes, one placed immediately above the other, and
worked by two cranks, which are turned by one spur wheel and two
pinions. The riddles work over loose rollers, which rollers, when the
potatoes are being separated into three sizes or qualities in the riddles,

page_text: clear away any potatoes that may have lodged, and so prevent the riddles
from being choked up or clogged. The riddles are made of angle-shaped
laths.
The chief feature of novelty in the Invention is the combined action
of the riddles and rollers, which action remedies the defect which exists
in all machines at present in use, namely, the want of power to clear
themselves whilst working.
SPECIFICATION filed in pursuance of the conditions of the Letters
Patent, and of an Order of the Lord Chancellor, by the said Ephraim
Harrison Griffin, in the Great Seal Patent Office on the 28th July
1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EPHRAIM
HARRISON GRIFFIN, of South Duffield, near Selby, in the County of
York, Farmer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirtieth day of December, in the
year of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Ephraim Harrison Griffin,
Her special licence that I, the said Ephraim Harrison Griffin, my
executors, administrators, and assigns, or such others as I, the said
Ephraim Harrison Griffin, 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, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle
of Man, an Invention for "IMPROVEMENTS IN MACHINERY FOR SEPARATING
AND RIDDLEING POTATOES," upon the condition (amongst others) that I,
the said Ephraim Harrison Griffin, my executors or administrators, by
an instrument in writing under my, 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.

page_text: NOW KNOW YE, that I, the said Ephraim Harrison Griffin, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
The machine is fixed in or upon a frame of wood, and consists of two
riddles of different sizes, one placed immediately above the other, and
worked by two cranks, which are turned by one spur wheel and two
pinions. The riddles work over loose rollers, which rollers, when the
potatoes are being separated into three sizes or qualities in the riddles,
clear away any potatoes that may have lodged, and so prevent the riddles
from being choked up or clogged. The riddles are made of angle-shaped
laths.
The chief feature of novelty in the Invention is the combined action
of the riddles and rollers, which action remedies the defect which exists
in all machines at present in use, namely, the want of power to clear
themselves whilst working.
In witness whereof, I, the said Ephraim Harrison Griffin, have
hereunto set my hand and seal, this Twenty-fifth day of July,
in the year of our Lord One thousand eight hundred and seventy-
six.
EPHRAIM HARRISON GRIFFIN. (L.S.)
Signed and sealed by the said
Ephraim Harrison Griffin, in
the presence of
FREDERICK W. THURSTANS,
Clerk to Messieurs Weddall & Parker,
Solicitors,
Selby.