A NEW OR IMPROVED FLOORING CRAMP
Year: 1858

page_text: LETTERS PATENT to George Cheadle, of Wolverhampton, in the County
of Stafford, Hardware Merchant, for the Invention of "A NEW OR
IMPROVED FLOORING CRAMP."
Sealed the 20th August 1858, and dated the 26th May 1858.
PROVISIONAL SPECIFICATION left by the said George Cheadle at the
Office of the Commissioners of Patents, with his Petition, on the
26th May 1858.
I, GEORGE CHEADLE, of Wolverhampton, in the County of Stafford, Hard-
ware Merchant, do hereby declare the nature of the said Invention for "A
NEW OR IMPROVED FLOORING CRAMP," to be as follows:-
My Invention consists of a new or improved flooring cramp constructed in
the following manner :-On the base of the instrument are two uprights,
in which a horizontal screw is supported and works; a screw box upon the
said screw is made to advance and recede by the rotation of the said screw,
and to the said screw the bolt or ram by which the boards are compressed is
attached. Underneath the base is the fork, which is laid across the joist, and
by which the cramp is held in its place while being used. Motion is given to
the before-mentioned screw, through which said screw the flooring is com-
pressed in the following manner:-On one end of the said screw is a worm
wheel, in which said worm wheel a worm engages, the said worm. being
formed on an axis at right angles to the screw. A winch is fixed on the
end of the axis of the worm, by which said winch the cramp is worked. By
actuating the cramp by the worm and worm wheel,. as described, great
power is obtained in the flooring cramp.. The essence of my Invention consists
in the use of the worm and worm wheel.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Cheadle in the Great Seal Patent Office on the
23rd November 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
CHEADLE, of Wolverhampton, in the County of Stafford, Hardware Merchant,
serid greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of May, in the year of our Lord
One thousand eight hundred and fifty-eight, in the twenty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said George Cheadle, Her special licence, that I, the said George Cheadle,
my executors, administrators, and assigns, or such others as I, the said
George Cheadle, my executors, administrators, and assigns, should at any timo
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 "A NEW OR IMPROVED
FLOORING CRAMP," upon the condition (amongst others) that I, the said George
Cheadle, 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.
NOW KNOW YE, that I, the said George Cheadle, do hereby declare the
naturo 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 thereof, that is to say :—
My Invention consists of a new or improved flooring cramp constructed in
the manner herein-after particularly described, and represented in the accom-
panying Drawing.
Figure 1 represents in side elevation a flooring cramp constructed according
to my Invention; Figure 2 represents a plan of the same; and Figure 3
represents an end elevation of the same.
On the base a of the flooring cramp are two uprights b, b, in which said
uprights a horizontal screw c works. A screw box d on the said screw c is
made to advance and recede by the rotation of the said screw, and to the said
screw box the ram or bolt è of the flooring cramp is attached, the said bolt

page_text: or ram sliding on the base plate a. On one end of the screw c a worm wheel f
(see Figure 3) is situated. g is an axis situated at right angles to the screw c,
the said axis working in the uprights h, h, as represented. On the said
axis g a worm i is made, which said worn engages in the worm wheel f
situated on the end of the screw c; to the end of the axis g a winch is fixed,
by which winch the cramp is worked. By turning the said winch k the
upon the axis engages with and communicates a rotatory motion to
the worm wheel f, and the said rotatory motion is imparted to the horizontal
screw c. By the motion of the screw c the screw box d is made to advance
and recede on the said screw, and the bolt or ram e to compress and recede
from the compressed and fastened flooring, as is well understood.
I do not think it necessary to describe the mechanism represented, whereby
the flooring cramp is fixed to the joist, as the said mechanism constitutes
no part of my Invention, and other mechanism may be employed for that
purpose with the same effect. The essence of my Invention consists in the
use of the worm i and worm wheelf for actuating the compressing mechanism
of the cramp, by which said worm and worm wheel great power is obtained in
the flooring cramp.
Having now described the nature of my said Invention, and the manner of
carrying the same into effect, I wish it to be understood that I do not limit
myself to the precise details herein described, as the same may be varied
without departing from the nature of my Invention; but I claim as my
Invention the new or improved flooring cramp herein-before described, and
represented in the accompanying Drawing, that is to say, a flooring cramp in
which the mechanism for compressing the boards is actuated by a worm and
worm wheel, the said worm wheel being situated upon the axis of the screw
from which the compressing bolt or ram derives its motion, in the manner
described and represented.
In witness whereof, I, the said George Cheadle, have hereunto set my
band and seal, this Twenty-second day of November, in the year of our
Lord One thousand eight hundred and fifty-eight.
Witness,
THOMAS BUNCH.
GEORGE CHEADLE. (L.S.)