IMPROVEMENTS IN CRAMPS FOR PUTTING TOGETHER PICTURE FRAMES, DRAWERS, BOXES AND SO FORTH
Year: 1886

page_text: Date of Application, 22nd May, 1886.
Complete Left, 22nd Feb., 1887.
Complete Accepted, 15th Apr., 1887.
I WILLIAM SANDAY of Radcliffe on Trent in the county of Nottinghain Gentleman
do hereby declare the nature of the said invention for "IMPROVEMENTS IN CRAMPS
FOR PUTTING TOGETHER PICTURE FRAMES, DRAWERS, BOXES AND SO FORTH
The object of this invention is to secure and hold firm the angles of picture frames
and analogous objects whilst nailing them together. The apparatus or cramp for this
purpose consists of a rectangular wooden frame. At the angle of the apparatus where
the parts of the frame are to be united, and on the outside is fixed (by screwing or
otherwise) an angular plate, between which and the frame of the apparatus are two
movable metal pieces, which are regulated by screws for keeping the extreme points
of the frame or other object to be joined perfectly even.
On two of the sides of this triangular cramp a double rack is fixed, flush with the
upper surface of the cramp, these racks are each supplied with an adjustable block
the teeth on which are cut or otherwise formed in an inverse sense to those on the
rack, so that these blocks can be moved forwards, but will not recede unless lifted out*
of the rack or slightly raised therefrom. Each block is provided with a guide which
passes between the aperture or space between the double racks. On each of the blocks
is mounted an eccentric plate turning on a pivot in the block, these plates each bear a
slot in form of a segment of a circle through which a thumb or adjusting screw is
passed for regulating its position on the block.
The object of these racks, blocks and eccentrics is to assist in securely holding the
parts of the picture or other frame whilst being nailed.
The points of junction of such frame being inserted in the cramp, the extreme
points rest against the movable metal plates referred to, these are then adjusted by the
screws to keep the points of the frame perfectly even and secure a proper angle.
TD 07

page_text: A sliding block is then inserted in the opening between the racks and rests against
the ends of the picture or other frame.
The rack blocks are then brought to bear against these sliding blocks by means of
the eccentric plate whose position is regulated by means of the adjusting screws and
a sufficient pressure of the eccentric plate is made thus to act on the sliding blocks
which latter press the parts of the frame into the angular plate and are held firm by
means of the adjusting screws.
Two similar sets of racks, blocks, sliding blocks and eccentrics are similarly
employed to exercise a pressure on the parts to be united from the inside of the
cramp.
A mitre or angle cutting apparatus may be mounted in any convenient position on
the cramp.
13
11
32 1
1001
A. C. HENDERSON, ·
Agent for William Sanday.

page_text: Improvements in Cramps for Putting Together Picture Frames,
Drawers, Boxes, and so forth.
I WILLIAM SANDAY of Radcliffe on Trent, Gentleman do hereby declare the
nature of my said invention for IMPROVEMENTS IN CRAMPS FOR PUTTING TOGETHER,
PICTURE FRAMES DRAWERS, BOXES AND SO FORTH and in what manner the same is
to be performed to be particularly described and ascertained in and by the following
statement and accompanying drawings:-
:-
Figure 1 represents a cramp of the description referred to. Figs. 2. 3. and 4 show
the blocks and racks, represented in detail, the same letters of reference indicate like
parts shown in the respective figures.
The object of this invention is to secure and hold firm the angles of picture frames
and analogous objects whilst nailing them together, blocks and racks being employed
for the purpose which will hereafter be explained.
The apparatus or cramp for this purpose consists of a triangular wooden frame A,
at the apex of the apparatus where the parts of the frame are to be united, and on the
outside is fixed (by screwing or otherwise) an angular plate B, between which and
the frame of the apparatus are two movable metal pieces c, c, which are regulated by
adjusting screws d, for keeping the extreme points of the frame to be joined,
perfectly even.
On two of the sides of this angular cramp a double rack C, is fixed flush with the
upper surface of the cramp, these racks are cach supplied with an adjustable block D.
the teeth on which are cut or otherwise formed in an inverse sense to those of the
racks so that these blocks can be moved forwards, but will not recede, unless lifted
out of the racks, or slightly raised therefrom by tilting them back.
Each block is provided with a guide which passes between the aperture or space e,
between the double racks.
The object of these racks and blocks, is to assist in securely holding the parts of the
picture or other frame or angle to be united whilst being nailed.
The points of junction of such frame being inserted in the cramp, the extreme
points rest against the movable plates referred to, these are then adjusted by the
screws to keep the points of the frame perfectly even, and secure a proper angle.
sliding block D is then inserted in each of the openings e between the racks, and
rests against the ends of the picture or other frame they are then made, to press the
parts of the frame upwards into the angular plate, at the apex of the cramp, where
such parts are held firmly by means of the adjusting screws, and they can then be
nailed or otherwise fastened.
The blocks may be variously formed to adapt them to the shape of the article to be
held by them, and such blocks with the racks in which they engage may be fitted to
an ordinary joiners bench, in this case a movable rest is placed at the end of the
bench, sliding up and down as required in a socket or some equivalent contrivance
fixed to the bench at this part.
Fig. 2 represents a block and rack which may be thus applied an end view of which
is shown by Fig. 2ª. O, is the rack in which the teeth of the block D engage, the

page_text: parts of the rack projects slightly beyond the part g, forming a recess on each
side of the rack on which the block by its arms sits astride, these arms D', are each
provided at their ends with projections, which on tilting the block backwards can be
slid along the recess g, the teeth being disengaged from those of the rack the block
can be moved forward as far as required and then allowed to drop into the teeth of the
rack, when it is perfectly firm.
The upper part of this block is provided with a cylindrical or other shaped rod F.
over which any shaped block or other device can be passed having an opening of
similar form in it for this purpose. This latter block would be of the form of the
article it is intended to secure, consequently it may assume any useful or desirable
shape.
Fig. 3 represents an end view of a rack C, and block D, in which the latter works.
The teeth of the rack in this case are at the bottom C. On each side of the block D,
is a pear or other shaped projection i, these slide along the upper parts h. h. of the
hollow rack inside it.
Fig. 4 is a side view of this block, which on being tilted backwards is disengaged
from the teeth of the rack, and can as in the former case be pushed forward as
required.
Blocks to suit the form of article to be secured are passed over the rod F as before
described.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed what I claim is
1st. A cramp A, having a double or single rack C, in the teeth of which those of
the blocks D. engage.
2nd. The construction of the block D shown in Fig. 2 whose teeth engage with
those of the rack C, the said block being provided with arms or branches D which sit
astride the rack and whose ends terminate in projections i, which slide along the
recess when the block is tilted backwards to disengage the teeth of the block from
those of the rack to allow of the block being moved forwards.
3rd. The construction of the hollow rack Fig. 3, in which the teeth of the block D
engage,
the teeth of the rack in this case being at the bottom. The ends of the block
being provided with pear or other shaped projections which slide, along the rack
inside the parts marked h. h. in the manner and for the purpose herein specified.
4th. The construction of the blocks with the rods F, so that any shaped block or
other device of an equivalent nature may be passed over it so as to accommodate itself
to the form of the article it is intended to secure.
5th. The adaptation of this description of rack and block to an ordinary joiners
bench.
13
1
1
1
.