Year: 1885

page_text: We CHARLES EDWIN LAYTON, and EDWIN JAMES LAYTON, of the firm of
C. & E. Layton, of 56, Farringdon Street, in the city of London, Printers dọ
hereby declare the nature of this invention to be as follows:-
Our invention has for its object the bending of the edges of thin metal plates at
any required distance from the edge and at any required angle.
For this purpose we provide a bed plate which is adapted to be screwed to
a bench or table; on this bed plate, the plate to be bent is placed.
On the front edge of the bed plate are gauges which can be shifted to any
required distance from the front edge to which gauges the front edge of the metal
plate to be bent is drawn. The gauges may be conveniently placed at the rear of
the bed plate instead of in front. At the front edge of the bed plate and over it
a platen is provided of suitable width which is actuated by screws or by other
suitable means. This platen when screwed down holds the metal plate in position
while the bending of the plate is in progress. The platen is advantageously
covered on its under surface with india rubber or other suitable soft substance for
the purpose of preventing injury to the surface of the metal plate. A lever
provided with handles and extending the length of the front edge of the bed plate
and parallel with it is provided to bend the edge of the plate. This lever has
holes provided to allow the gauges to pass it when it descends. The lever is
swung on centres at the side of the bed plate in such a position that when in use
it clears the head and screws of the platen. Screws are provided at each side of
the bed plate on the heads of which the shafts of the lever rest when the lever is
depressed. By adjusting these screws the lever may be depressed more or less as
may be desired.
A metal plate having been placed in position, the edge of it is bent to any
required angle by the lever according as these screws are elevated or depressed.
Our improved machine can be used with advantage for bending the edges of
prepared plates employed as substitutes for lithographic stones.

page_text: f
We, CHARLES EDWIN LAYTON and EDWIN JAMES LAYTON, of the firm of
C. & E. Layton, of 56 Farringdon Street in the City of London, Printers, 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:-
Our invention has for its object the bending of the edges of thin metal plates at
any required distance from the edge and at any required angle.
For this purpose we provide a bed plate which is adapted to be screwed to
a bench or table; on this bed plate the plate to be bent is placed.
At the front edge of the bed plate are gauges which can be shifted to any
required distance from the said front edge, to which gauges the front edge of the
metal plate to be bent is drawn. The guages may be conveniently placed at the
rear of the bed plate instead of in front. At the front edge of the bed plate and
over it a platen is provided of suitable width which is actuated by screws, nuts or
other suitable means. This platen when screwed down holds the metal plate in
position while the bending of the plate is in progress. The platen is advantageously
covered on its under surface with india rubber or other suitable soft substance for
the purpose of preventing injury to the surface of the metal plate. A lever
provided with handles and extending the length of the front edge of the bed plate
and parallel with it is provided to bend the edge of the plate. This lever has holes
provided to allow the guages to pass it when it descends. The lever is pivotted on
centres at the side of the bed plate, in such a position that when in use it clears the
head and screws of the platen. Screws are provided at each side of the bed plate,
on the ends of which the sides of the lever rest when the lever is depressed. By
adjusting these screws the lever may be depressed more or less as may be desired.
In order to enable our invention to be fully understood, we will describe the
same by reference to the accompanying drawing in which figures 1 and 2 represent
a front and side elevation respectively of an apparatus for bending the edges of
metal plates constructed according to our invention, the lever being shewn in its
normal or raised position. Figure 3 is a horizontal section on the line A B of
figure 1, and figure 4 is a transverse section of the apparatus shewing the lever
depressed as in the operation of bending one of the edges of a metal plate. Similar
letters of reference indicate similar parts throughout the drawing.
a is the bed plate on which the plate A (figure 2) to be bent is placed, the said
bed plate being provided with feet b and b¹, for the purpose of screwing the
apparatus to a bench, table or the like. c are the gauges to which the front edge
of the metal plate A to be bent is drawn as shewn in figure 2; the gauges are
formed as shewn in figures 2 and 4, and are placed at the front edge a¹ of the bed
plate a, (or the gauges can be placed at the rear of the bed plate). The said gauges
are attached to the under side of the bed plate a, as shewn in figure 4, and are
adjustable so that they can be shifted to any required distance from the front
edge a¹, of the bed plate a; d is the platen placed at and over the front edge a¹ of
the bed plate a, and supported by springs e, encircling screw bolts f, which pass

page_text: through the ends of and serve to guide the platen d when the latter is moved up
or down by operating the winged nuts g, on the said screws f, the platen when
pressed down by the said nuts serving to hold the metal plate A in position while
the bending of the plate takes place. h is the india rubber or other suitable soft
substance with which the under surface of the platen d is covered for the purpose
of preventing injury to the surface of the metal plate A to be bent; i is the lever
for bending the edge of the plate, the sides of the lever being pivotted at j, j, at
each side of the bed plate a, the lever i extending across it the length of and
parallel with its front edge a¹. The lever i is formed of the shape shewn in
figure 1, so that when moved down it will clear the platen d and winged nuts g.
k are the handles for actuating the lever i which is also provided with a downward
projection, which serves (when the lever is depressed) to come in contact with
and bend the edge of the metal plate A required to be bent as shewn in figure 4.
Zare the holes in the projection of the lever i, which allow the gauges to pass
through them when the lever is moved down. m are the screws provided at each
side of the bed plate a and passing up through the feet b' on the ends of which
screws the sides of the lever i rest when the said lever is depressed. By
adjusting these screws the lever may be depressed more or less as may be desired.
In order to bend the edge of a metal plate by an apparatus of this construction
the parts of the machine being in the position shewn in figures 1 and 2, the metal
plate A (figure 2) to be bent, is placed on the bed plate so that its front edge
touches the gauges c as shewn in the said figure 2. The platen d, is then tightened
down on the metal plate A by means of the nuts g, and the lever i, being then
moved down in the direction indicated by the arrow in figure 2, the projection i
thereon will come in contact with the edge of the metal plate A, and bend it as
shewn in figure 4, the screws m being adjusted to limit the movement of the
lever i, according to the angle to which it is required to bend the edge of the
metal plate. The operation of bending the edge of the plate having now been
performed the lever i is moved back to its normal position and the nuts g being
loosened the platen will be caused to rise by means of the springs e thereby
releasing the metal plate A which can then be taken out and replaced with its
opposite edge in position to be operated on or another plate can be inserted.
Our improved apparatus is particularly adapted for bending the edges of
prepared plates employed as substitutes for lithographic stones.
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,
1. In apparatus for bending the edges of metal plates the combination with
a suitable bed plate and mechanism for securing the plates, of a pivotted lever
operating substantially in the manner hereinbefore described and represented in
the accompanying drawing.
2. The combination of parts forming the improved apparatus for bending the
edges of metal plates as hereinbefore described and represented in the accompanying
drawing,