Impro
Year: 1896

page_text: I, WILLIAM LUDLOW of No.178 Saint Andrew's Road, Small Heath Birmingham
in the County of Warwick Wheelwright do hereby declare the nature of this
invention to be as follows:-
This invention relates to an "Improved mitre cramp" and has for its object to
provide a simple and efficient arrangement for holding or cramping together the
four corners of a picture or other frame after they have been mitre cut for the
purpose of fastening the corners together.
My invention consists essentially of four cast iron or brass corner plates
provided with two lugs and a corner piece forming a right angle with each other.
At the aft end of the corner piece on three of the said plates I attach a grooved
pulley free to rotate on an axis for the purpose hereafter described. The fourth
plate which is much larger than the three aforesaid is provided at the aft end of
the corner piece with a drum one side is furnished with a plain flange and the
other with a ratchet wheel, the whole being free to rotate on a spindle the end of
which is made square to fit a key or handle. Near to the periphery of the ratchet
wheel is pivoted a paul which engages in the teeth of the said wheel the whole
being covered by a plate resting on two studs. The drum aforesaid is furnished
with a cord, gut, or leather band one end being attached to one of the lugs or to
some other convenient part of the drum plate, the other end being attached to the
drum.
In using my improved cramp for cramping or holding the four sides of a picture
frame for the purpose of joining the corners together, I first place two of the said
corners into each corner piece of the respective plates the lugs forming abuttments
for the sides. I then place the cord aforesaid into the grooves of the three pulleys
and rotate the handle winding the cord around the drum which draws the whole
corner plates firmly against the corners of the frame & thus bracing them firmly
together in this manner the four corners may be easily and expeditiously joined
without the necessity of having to remove them from the cramp.
WILLIAM HENRY BARACLOUGH,
36 Temple Street, Birmingham, Agent for the Applicant.
An improved Mitre Cramp.
I, WILLIAM LUDLOW, of No. 178 Saint Andrew's Road, Small Heath,
Birmingham, in the County of Warwick Wheelwright, do hereby declare the
nature of this invention and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement :—
This invention relates to an improved mitre cramp and has for its object to

page_text: provide a simple and effective arrangement for holding or cramping together the
four corners of a picture or other frame after they have been mitre cut for the
purpose of fastening the corners together. My invention consists essentially of
four cast iron or brass corner plates provided with two lugs and a corner piece
forming a right angle with each other. At the aft end of the corner piece on three
of the said plates I attach a grooved pulley free to rotate on an axis for the purpose
hereafter described. The fourth plate which is much larger than the three
aforesaid is provided at the aft end of the corner piece with a drum one side is
furnished with a plain flange and the other with a ratchet wheel the whole being
free to rotate on a spindle the end of which is made square to fit a key or handle.
Near to the periphery of the ratchet wheel is pivoted a paul which engages in the
teeth of the said wheel the whole being covered by a plate resting on two studs.
The drum aforesaid is furnished with a cord, gut, or leather band, one end being
attached to one of the lugs or to some other convenient part of the drum plate the
other end being attached to the drum. In using my improved cramp for cramping
or holding the four sides of a picture frame for the purpose of joining the corners
together I first place two of the ends into the said corner piece for the respective
plates the lugs forming abuttments for the sides. I then place the cord aforesaid
into the grooves of the three pulleys and rotate the handle winding the cord around
the drum which draws the whole corner plates firmly against the corners of the
frame and thus bracing them firmly together in this manner the four corners may
be easily and expeditiously joined without the necessity of having to remove them
from the cramp. The nature of my invention will be more clearly understood
from the accompanying drawings the same letters of reference indicating similar
parts throughout.
Figure 1 represents a plan of my improved mitre cramp for holding or cramping
a picture frame.
Figure 2 represents in plan and side elevation one of the corner plates.
Figure 3 represents in plan and side elevation the corner plate provided with the
cramping mechanism.
A, A2, A3, are corner plates provided with lugs B and corner pieces D.
E represents a grooved pulley attached to each corner plate by the axis F. The
corner plate G is pivoted with a drum H which is furnished with a flange I and
the ratchet wheel J rotating on the spindle K having a square end L fitted with a
handle M, the top plate N keeping the whole in position. The paul O engages in
the teeth of the ratchet wheel J the corner plate G being fixed by screws passing
through the screw holes g one end of the cord P is attached to the lug B' passing
round the pulleys E and attached to the drum H. The four sides of a picture
frame R being placed in position the handle M is rotated which operation causes
the cord to coil round the drum drawing the four corner plates firmly against the
corners of the frame R thus bracing them together and enabling the corners being
joined.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The improved mitre cramp substantially as and for the purpose described and
illustrated in the accompanying drawings.
WILLIAM HENRY BARACLOUGH,
36, Temple Street, Birmingham, Agent for the Applicaut.