IMPROVEMENTS IN SCREW GILL BOXES USED IN THE PREPARATION OF WOOL AND OTHER FIBROUS SUBSTANCES
Year: 1857

page_text: LETTERS PATENT to Samuel Mortimer, of Halifax, in the County of York,
Mechanic, for the Invention of "IMPROVEMENTS IN SCREW GILL BOXES
USED IN THE PREPARATION OF WOOL AND OTHER FIBROUS SUBSTANCES."
PROVISIONAL SPECIFICATION left by the said Samuel Mortimer at the
Office of the Commissioners of Patents, with his Petition, on the
80th April 1857.
I, SAMUEL MORTIMER, of Halifax, in the County of York, Mechanic, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN SCREW
GILL BOXES' USED IN THE PREPARATION OF WOOL AND OTHER FIBROUS SUBSTANCES,"
to be as follows:-
My improvements relate to the retarding of the "drop" of the "fallers"
in screw gill boxes from the upper bed or "saddle" to the lower one, thereby
diminishing the wear and tear of the machine, and also preventing the noise
produced by a sudden or unretarded "drop" or fall; which said improvements
I effect by the employment of sliding picces or pillars, supported by springs
or weighted, levers, applied in such a manner that when one of the fallers
leaves or is driven off the upper bed or. "saddle" it is received and supported
by the sliding peices and springs or levers, yet allowing the "cams"
to press
or force the "faller " gradually down to the lower bed or saddle, thus avoiding

page_text: or preventing sudden concussion; and when the said faller is removed the
springs or weighted lovers force up the sliding pieces ready at the proper
time to receive the next faller.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Samuel Mortimer in the Great Seal Patent Office on the
30th October 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SAMUEL
MORTIMER, of Halifax, in tho County of York, Mechanic, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing dato tho Thirtieth day of April, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twentieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the
said Samuel Mortimer, Her special licence that I, the said Samuel Mortimer,
my executors, administrators, and assigns, or such others as I, the said
Samuel Mortimer, my executors, administrators, and assigns, should at any
time agree with, and no others, froin 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
SCREW GILL BOXES' USED IN. THE PREPARATION OF WOOL AND OTHER FIBROUS
SUBSTANCES," upon the condition (amongst others) that I, the said Samuel
Mortimer, 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 performed, and cause the same to be filed
in the Great Seal Patent Office within six calendar months next and imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, tho said Samuel Mortimer, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement (that is to say):-
"
My improvements relate to the retarding of the "drop" of the "fallers
in screw gill boxes from the upper bed or "saddle" to the lower one, thereby
diminishing the wear and tear of the machine, and also preventing the noise
produced by a sudden or unretarded "drop" or fall; which said improvements
I effect by the employment of sliding pieces or pillars, supported by springs
'or weighted levers, applied in such a manner that when one of the fallers

page_text: "
leaves or is driven off the upper bed or "saddle" it is received and supported
by the sliding pieces and springs or. levers, yet allowing the "cams
to press
or force the "faller " gradually down to the lower bed or saddle, thus avoiding
or preventing sudden concussion, and when the said "faller" is removed
the springs or weighted.levers force up the sliding pieces ready at the proper
time to receive the next "faller."
But in order that my Invention may be clearly understood I have given
reference to the accompanying Sheet of Drawings, the same letters in each
Figure referring to the same parts.
Fig. 1 is a front elevation of a screw gill box, with the drawing rollers and
apron removed, in order to shew the application of my improvements; Fig. 2
is a section of the same, taken through the line A, B. a represents a "faller,"
resting at each end upon the upper bed or saddle b, b,.and in contact with
the top screws.c, c, on which are fixed the cams d, d, for forcing the fallers
forward if they should stick betwixt the ends of the saddles and the guide
springs e, e, to the lower bed or saddles f, f, and in contact with the lower
or return screws 9, 9, all of which parts are well understood, and form no
part of my Invention.
My improvements will be understood by reference to Fig. 3, where h, h,
represent the sliding pieces or pillars, which are capable of sliding in the
socket's i, i, and are supported by the pair of elliptical springs j, j, which
springs are held together by the clip k, and.kept in position by the guide rod
1, attached thereto, and sliding in the socket m.
The manner of applying these improvements will be readily seen by reference
to Figures 1 and 2, where the lower spring rests at each end upon a roller,
the socket m being attached to the cross rail of the framing, the guide rod
Z passing through it with the spiral spring n thercon to prevent too great a
rebounding of the elliptical springs. The upper spring has a slot in cach
end, through which the slides h, h, pass, and rest on collars formed thereon
with a flexible substance betwixt. It will be clearly seen that when the
faller drops or is forced off the upper bed or "saddle" it will be received by
the slide pieces, and the momentum of the fall will be retarded by the springs,
the cams gradually pressing it down to the lower bed, where it will be taken
hold off by the low screws and carried away as heretofore, and as soon as
the slides are released of the faller the springs force them up ready to receive
the next faller, and so on.
I have hero described the kind of apparatus and manner of applying the
same which I prefer, but other similar means may be employed, as at Fig. 4,
where a latch bar o is attached by a stud joint to each side of the frame of the

page_text: machine, and supported by a single spring p, or as seen at Fig. 5, where a
similar bar is employed, but supported by a lever and weight q.
Having thus fully described the nature and particulars of my said Invention,
and. the manner in which the same is to be performed, I would have it
distinctly understood that I do not confine myself to the precise details herein
set forth; but what I claim as my Invention, and which I believe to be new
within the realm, is, the retarding the drop or fall of the "fallers" in "screw
gill boxes by means of slides and springs or weighted levers, as herein
described, and illustrated in the accompanying Sheet of Drawings, or any
modification thereof.
In witness whereof, I, the said Samuel Mortimer, have hereunto set my
hand and seal, this Twenty-eighth day of October, in the year of our
Lord One thousand eight hundred and fifty-seven.
SAMUEL MORTIMER. (L.S.)
Signed, sealed, and delivered by the
within-named Samuel Mortimer,
in the presence of
WTASKER, Patent Agent,
Halifax.