IMPROVEMENTS IN CRAMPS FOR FLOORING BOARDS AND OTHER PURPOSES
Year: 1869

page_text: LETTERS PATENT to Charles Longfield, of Lancaster Street, Birming-
ham, for the Invention of "IMPROVEMENTS IN CRAMPS FOR FLOORING
BOARDS AND OTHER PURPOSES."
Sealed the 18th September 1869, and dated the 23rd March 1869.
PROVISIONAL SPECIFICATION left by the said Charles Longfield at
the Office of the Commissioners of Patents, with his Petition, on
the 23rd March 1869.
I, CHARLES LONGFIELD, of Lancaster Street, Birmingham, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN CRAMPS
FOR FLOORING BOARDS AND OTHER PURPOSES," to be as follows:-
This Invention consists of an improved form of cramp for pressing
closely together floor boards for buildings and other purposes. By this
Invention the object attained is that of bringing much greater pressure
on the boards or articles acted upon, and this also in a much more simple
way than by the ordinary cramp now in use.
And in order that my Invention may be clearly understood reference
is made to the accompanying Drawings.

page_text: The cramp is firmly secured to the floor joist or scantling A, A, by
means of a screw M on one side of the same and a lug G on the other
end; the pressure is then given to the floor boards B, B, by turning the
screw F having a loose nut X on its end, which screw acts directly on
the boards to be pressed (B, B).
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Longfield in the Great Seal Patent Office
on the 23rd September 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
LONGFIELD, of Lancaster Street, Birmingham, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of March, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Charles Longfield, Her special licence
that I, the said Charles Longfield, my executors, administrators, and
assigns, or such others as I, the said Charles Longfield 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 CRAMPS FOR FLOORING BOARDS AND OTHER PURPOSES," upon the condition
(amongst others) that I, the said Charles Longfield, 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
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.
was to
NOW KNOW YE, that I, the said Charles Longfield, 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 :-
The object of this Invention is to enable workmen to lay flooring

page_text: boards in a better and quicker manner, and with greater ease than
hitherto, and also to give greater power and effect to cramps upon large
frames by using them right and left-handed, and for securing to a piece
of scantling of any required length.
The cramp is constructed in the form or shape represented on the
Drawings, and made of iron or other suitable material of sufficient
strength. The size as marked on the Drawings I find a convenient size,
but I do not confine myself to this precise size, as the same may be
varied as circumstances may require. The Drawings also shew its appli-
cation. The same letters of reference refer to similar parts in all the
Figures.
The cramp is firmly secured to the floor joist or scantling A, A,
Fig. 2, by means of a screw M on one side of the scantling and a lug G,
see Fig. 1, on the other side, and the pressure is then given to the
floor boards B, B, by turning the screw F. This screw F has a loose
nut X on its end, which screw acts directly on the boards B, B, to be
pressed. The cramp can be made in pairs right and left handed, and
can thus be used for cramping up large frames by being secured to a
piece of scantling of the required length, as shewn on Drawing,
Fig. 3.
Having thus described the nature and object of my Invention, I would
observe that I do not claim applying a screw to flooring boards; but
that what I claim and desire to be secured to me under the herein-before
in part recited Letters Patent is, the improvements in and construction of
cramps for flooring boards, making cramps right and left handed for
flooring, and cramping large frames, as herein-before described and
illustrated on Drawings, or any mere modification thereof.
In witness whereof, I, the said Charles Longfield, have hereunto
set my hand and seal, this Twenty-third day of September, in the
year of our Lord One thousand eight hundred and sixty-nine.