IMPROVEMENTS IN CRAMPS FOR FIXING BOARDS UPON WALLS AND CEILINGS
Year: 1884

page_text: We, EDWIN VERITY, and JOSHUA MARLAND VERITY, of Call Lane, Leeds;
Ironmongers, and BENJAMIN BANKS, of Freehold Street, Leeds, Joiner, all in the
County of York, do hereby declare the nature of our Invention for "IMPROVEMENTS
IN CRAMPS FOR FIXING BOARDS UPON WALLS AND CEILINGS," to be as follows:-
We first prepare a light but strong trough or box-shaped metal casting, with a
level face, to lie upon, or against the batten, lagging, or "ground," to or upon which
the boards are to be laid and fixed, and upon the sides of this casting we construct
overhanging lugs or brackets; one to receive a slotted adjustable claw or gripper,
and the other a similar one, upon the end of a short lever which is "centred" or
jointed to its lug or bracket, and which has a screw with a "milled" or crossed
head, fitted into the outer or reverse end of the Lever, and arranged to press
against the side of the box or main casting, and thus cause the grippers to close and
tighten upon the edges of the batten or "ground" which has to receive the board,
and fix the cramp.
The ends or faces of these grippers are crossed, chequered, or roughened in any
convenient manner, and are of sufficient length to hold the entire machine, firmly
and securely, upon the batten or "ground," when tightened by the action of the
milled or crossed headed screw and lever; and, the gripping claws or faces are also
constructed to press with the greater force upon the back half or part of the edges
of the "ground" or batten, so as to increase the security of the cramp, when fixed.
Having thus completed the gripping or attaching parts or details of our cramp,
we construct, and fit upon the outer face of the first-named casting,-between the
sides and the lugs or brackets,-a pair of "mitre" or bevelled wheels;-one placed
vertically, to receive a screw through its centre, with a sliding head or pusher, and
the other horizontally, to work into the former one, and have a crossed or T head
for convenience in rotating both the wheels, and thereby forcing the screw and the
sliding head or pusher longitudinally, for compressing the boards together, and
holding them firmly, whilst being nailed to the "ground" or batten.

page_text: The sliding head or pusher, carried by the screw, is also notched or roughened'
and made to press upon the back half or part of the edge of the board, to prevent
it from rising, and also from showing damage from the thrust.
ور
We deem it necessary to also explain that the face of the head of the pusher is
divided into two, with a space between them, for the purpose of allowing "skew
or "secret" nailing, when required.
We, EDWIN VERITY and JOSHUA MARLAND VERITY, of Call Lane, Leeds,
Ironmongers, and BENJAMIN BANKS, of Freehold Street Leeds, Joiner, all in the
County of York, do hereby declare the nature of our said Invention for "IMPROVE-
MENTS IN CRAMPS FOR FIXING BOARDS UPON. WALLS AND CEILINGS," and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:→
"
We first prepare a light but strong trough or box shaped metal casting, with a
level face to lie upon or against the " batten," "lagging," or 'ground," to or upon
which the boards are to be laid and fixed; and upon the sides of this main casting,
we construct overhanging "lugs" or brackets; one to receive a slotted adjustable
claw or gripper, and the other a similar one, fitted upon the end of a short lever,
which is "centred or jointed to its lug or bracket, and which has a screw with a
"milled," crossed, or other convenient "head," fitted into the outer or reversed end
of the lever, and arranged to press against the side of the first named box or main
casting, and thus cause the grippers to close and tighten upon the edges of the
batten or ground" which has to receive the boards, and fix the cramp.
32
st
The ends or faces of these grippers are crossed, chequered, or roughened in any
convenient manner, and are of sufficient length to hold the entire machine firmly
and securely upon the batten or ground," when tightened by the action of the
milled or crossed headed screw and lever; the faces of the gripping claws being also
BO constructed as to press with the greater force upon the back half or part of the
ground or batten, so as to increase the firmness and security of the cramp,
when fixed.
"
11'
Having thus completed the gripping or fixing parts or details of our cramp, we
construct and fit upon the back or outer face of the main casting,-between the
sides, and the lugs or brackets,-a pair of " mitre or bevelled wheels; one placed
vertically, to receive a screw through its centre, with a forked or double sliding
head or pusher, and the other horizontally to work into the former one, and have a
crossed or T head, for convenience in rotating both the wheels, and thereby forcing
the screw and the sliding head or pusher longitudinally for compressing the boards
together, and holding them firmly, whilst being nailed to the "ground or batten.
The sliding head or pusher, carried by the screw, is forked and notched or
»

page_text: roughened, and bevelled, to press with greater force upon the back half or part of
the edge of the board, to prevent it from rising from the batten, and also from
showing damage from the thrust.
In the accompanying illustrations Figure 1 is a complete plan of our Invention ;
Figure 2 is a side elevation, showing the adjustable and lever fixing claws or
grippers and the ends or faces of the sliding head or pusher; Figure 3 is the
reverse side, showing the grippers and the plain or back ends of the pusher and its
screw; and Figure 4 is the end elevation, showing the side of the pusher; and in
all these a is the main or box casting; b the adjustable claw; c the tightening or
fixing "lever claw;" d the screw for the same; e the mitre or bevelled wheels; f
the screw for actuating the pusher; g the pusher, and h the handle for rotating the
wheels, as explained.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, we declare that what
we claim is:
The general arrangement and construction of a Cramp, for fixing boards upon
walls or ceilings, with the combined adjustable and lever grippers, and double or
forked pusher or "tightening up" action or arrangement, as, or after the manner
herein before described and set forth.