An Improved Bending and Shearing Machine.
Year: 1895

page_text: Date of Application, 19th Nov., 1895
Complete Specification Left, 23rd July, 1896-Accepted, 29th Aug., 1895
PROVISIONAL SPECIFICATION.
An Improved Bending and Shearing Machine.
I CHARLES SCRIVEN of the Leeds Old Foundry, Marsh Lane, Leeds in the
County of York, Mechanical Engineer do hereby declare the nature of this
invention to be as follows:-
My invention refers to machinery for bending and shearing bulb section beams,
such as are used for ships' deck beams, in connection with which it is hereunder
described; though it will be evident that the invention may be adopted for bending
and shearing beams of other section.
In the case of ships' deck beams, these require to be bent to the camber of
the deck, and in order to attach them to the knees or plates which connect them
to the vertical side frames or ribs of the ship; without having to have resource to
packing pieces, it is usual to remove at each end of the beam over a short length on
one side the projecting part of the bulb section. By this invention the bulb deck
beams can be bent to suit the camber of the decks, and also a portion of the bulb
sheared off to receive the knee or plate, without removing the beam from the
machine, thereby effecting a great saving in preparing the said deck beams, and a
similar saving of labour in the case of other beams.
In a machine constructed in accordance with my invention, I provide a bed or
frame, having a wide shallow gap, and mount or the same at one side of the gap the
bearing for a reciprocating ram or slide, hereinafter for the sake of brevity called
the ram; and hydraulic or steam apparatus or crank, cam or other mechanism for
giving motion to the ram. On the opposite side of the gap and towards each side
of the frame and on the same level as the ram, I provide nut bearings for a pair of
adjusting screws, which carry at their ends bearing blocks. Or I may employ a
pair of sliding rods carrying said bearing blocks at their ends, and arranged capable
of being set up or adjusted by screws. The beam to be bent is placed between the
end of the ram and the end blocks on the screws, the camber to be given to the
beam being arranged for by setting up the adjusting serewe.
In order to support
the beam, a pair of rollers are provided on each side of the gap, carried in slot
bearings cast on or attached to the frame of the machine.
On the bottom of the gap I provide a horizontal guide or guides, in which is
fitted a sliding plate carrying the moveable shear blade. The movement of the
sliding plate is effected by the same mechanism as that provided for imparting the
reciprocating movement to the bending ram; or the sliding plate may be attached
to the ram, or such mechanism may be connected to a sliding block to which both
the ram and the aforesaid sliding plate are attached. The fixed blade is attached
to the frame at the opposite side of the gap, and on the same side as the adjusting
screws. A second set of bearings for the side rollers above referred to, are
provided; so that the beam after having been bent to camber, can be dropped down
and supported at the proper level for shearing. In order to prevent the lifting or
tilting of the beam during the shearing operation, a vertical screw or screws are
provided, and carried from overhanging brackets cast on or attached to the frame
at the shearing side of the gap, which can be screwed down, so that their lower
ends rest upon the top side of the beam.
In order to adjust the beam to have the bulb sheared off to the required distance,
I insert between the sliding plate (or ram) and the mechanism actuating it, (or the
sliding block above referred to), a locking or throwing out device; so that the
movement of the sliding plate carrying the moveable shear blade may be stopped

page_text: without stopping the movement of the bending ram. Similarly I may provide a
locking or throwing out device between the bending ram and the mechanism
operating it, (or the sliding block above referred to). Such device may consist of
a shaft or pin having a short strong lever or lug provided thereon, which can be
rotated so as to place the lever or lug in a horizontal or vertical position, locking
the connection in one position and unlocking it in the other.
Lastly the bearings, carrying the side rollers supporting the beam, may be
formed in the ends of levers pivotted on pins or shafts, and provided with a long
hand lever or levers, so that the beam can be readily raised or lowered to or from
the position during the bending operation from or to the position during the
shearing operation. A catch device is provided in connection with the above
to lock the levers in one or both positions.
It will be evident that my improved above machine, may be arranged as a vertical
machine, instead of the horizontal arrangement above described.
Dated this 18th day of November 1895.
J. CLARK JEFFERSON,
30 Park Row, Leeds, Agent for Applicant.
An Improved Bending and Shearing Machine.
1 CHARLES SCRIVEN of the Leeds Old Foundry Marsh Lane Leeds in the
County of York Mechanical Engineer do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
My invention refers to machinery for bending and shearing bulb section beams,
such as are used for ships deck beams, in connection with which it is hereunder
described; though it will be evident that the invention may be adopted for bending
and shearing beams of other suitable sections.
In the case of ship's deck beams these require to be bent to the camber of the
deck, and in order to attach them to the vertical side frames or ribs of the ship
without having to have resource to packing pieces, it is usual to remove at each
end of the beam over a short length at one side the projecting part of the bulb
section. By this invention the bulb deck beams can be bent to suit the camber of
the decks and also a portion of the bulb sheared off to receive the knee plate
without removing the beam from the machine, thereby effecting a great saving in
preparing the said deck beams, and a similar saving of labour in the case of other
beams.
In a machine constructed in accordance with my invention, I provide a bed or
frame having a wide shallow gap, and mounting on the same at one side of the gap
the bearing for a reciprocating ram or slide, hereinafter for the sake of brevity
called the ram, and hydraulic or steam apparatus, or crank, cam, or other
mechanism for giving motion to the ram. On the opposite side of the gap and
towards each side of the frame and on the same level as the ram I provide nut
bearings for a pair of adjusting screws, which carry at their ends bearing blocks.
Or I may employ a pair of sliding rods, carrying said bearing blocks at their ends,
and arranged capable of being set up or adjusted by screws. The beam to be bent
is placed between the end of the ram and the bearing blocks on the screws, the
camber to be given to the beam being arranged for by setting up the adjusting
screws. In order to support the beam a pair of rollers are provided on each side
of the gap, carried in slot bearings cast on or attached to the frame of the
machine.
On the bottom of the gap I provide a horizontal guide or guides, in which is
fitted a sliding plate carrying the moveable shear blade. The movement of the

page_text: sliding plate is effected by the same mechanism as that provided for imparting a
reciprocating movement to the bending ram, or the sliding plate may be attached
to the ram, or such mechanism may be connected to a sliding block to which both
the ram and the aforesaid sliding plate are attached. The fixed blade is attached
to the frame at the opposite side of the gap and on the same side as the adjusting
Screws. A second set of bearings for the side rollers above referred to are
provided, so that the beam after having been bent to camber, can be dropped down
and supported at the proper level for shearing.
In order to prevent the lifting or tilting of the beam during the shearing
operation, a vertical screw or screws are provided, and carried from an overhanging
bracket or brackets, cast on or attached to the frame at the shearing side of the
gap, which can be screwed down, so that the lower end rests on the top side of the
beam.
In order to be able to adjust the beam to have the bulb sheared off to the
required distance, I may insert between the sliding plate (or the ram) and the
mechanism actuating it (or the sliding block above referred to) a locking or
throwing out device, so that the movement of the sliding plate carrying the
moveable shear blade can be stopped without stopping the movement of the
bending ram. Similarly I may provide a locking or throwing out device between
the bending ram and the mechanism operating it, (or the sliding block above
referred to). Such device may consist of a shaft or pin, having a short strong
lever or lug provided thereon, which can be rotated so as to place the lever or
lug in a horizontal or vertical position, locking the connection in one position
and unlocking it in the other.
Lastly the bearings carrying the side rollers supporting the beam may be
formed in the ends of levers pivotted on pins or shafts, and provided with a long
hand lever or levers, so that the beam can be readily raised or lowered to or from
the position during the bending operation from or to the position during the
shearing operation. A catch device is provided in connection with the above to
lock the levers in one or other of said positions.
It will be evident that my above improved machine may be arranged as a
vertical machine, instead of the horizontal arrangement above described.
And in order that my invention and the manner in which the same is to be
performed may be more readily and clearly understood, I have annexed hereto the
accompanying sheet of drawings, in which Fig. 1 is a perspective view shewing my
invention attached to a punching and shearing machine, Fig. 2 being a longitudinal
section on the centre line of the machine, and Fig. 3 a longitudinal section on the
centre line of one of the adjusting screws.
a is the bed or frame of the machine.
b is the reciprocating bending ram attached to the arm c of the eccentric d
mounted on one of the motion shafts of the machine.
e are bearing blocks adjustable in position by means of the adjusting screws f
working in nuts g secured in the frame of the machine. The blocks e are attached
to the ends of the screws f by a swivel joint, so as to admit of the screws being
rotated without rotating the blocks. The beam to be bent is placed between the
end of the rain b and the blocks e, the camber to be given to the beam being
arranged for by setting up the blocks e by means of the screws f.
h are rollers to support and facilitate the handling of the beam during the
bending and shearing operations.
g is the fixed shear blade, situated on the same side of the gap as and between
the adjustable stationary blocks e.
is a sliding plate or block, fitting between guides in the lower part of the gap
of the machine, and to which is attached the moveable shear blade i. The sliding
plate is actuated from the block of the bending ram 6 by means of the following
locking or throwing out connection. The lower part of the ram b is recessed at
the front to receive the sliding plate j. k is a shaft passing through a slot hole in
each side of the above mentioned recess of the ram b, and through a slot hole in

page_text: the fixed side of the slide for the ram b. The shaft k is provided with a stout
tumbler or lug, which when hanging down in the position shewn in Fig. 2, permits
the bending ram b to move without imparting its movement to the sliding plate or
block; and shearing blade i; but which when tilted over into a horizontal position,
m is a handle on
causes the latter to be moved forward with the bending ram.
the end of the shaft k for rotating the latter, so as to move the lug or tumbler/
into the vertical or horizontal position.
o are bearings for carrying the rollers h during the bending operation, and p for
carrying the same during the shearing operation. n is a holding down screw for
holding down the beam during the operation or operations.
It will be evident that the nature of my invention is not altered, if the locking
and disengaging device is made between the slide block j and the eccentric lever, or
other mechanism actuating the ram.
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. A combined bending and shearing machine comprising two stationary
adjustable blocks and a single moveable bending block placed respectively on
opposite sides of a gap and a fixed shear blade placed on the same side of the
gap as and between the stationary blocks and a moveable shear blade fitting in
guides in the lower part of the gap and arranged capable of being locked so
as to partake of the motion of the moveable bending block, or to be disconnected
therefrom so as to remain stationary during the movement of the latter.
2. A combined bending and shearing machine comprising two stationary
adjustable blocks and a single moveable block or bending ram placed respectively
on opposite sides of a gap and a fixed shear blade placed on the same side of
the gap as and between the stationary blocks and a moveable shear blade fitting in
guides in the lower part of the gap.
3. The arrangement and combination of adjustable stationary blocks e and fixed
shear blade g fitted on one side of the gap of the machine, moveable or recipro-
cating bending block or ram b on opposite side of said gap, slide block; carrying
the moveable shear blade i and fitting between guides in bottom of said gap with
or without connections for locking the side block j to or disengaging the same
from the bending ram 6 or other mechanism actuating the ram substantially as and
for the purpose herein set forth and as illustrated.
4. My improved bending and shearing machine arranged and combined sub-
stantially as and for the purpose or purposes herein set forth.
Dated this 21st day of July 1806
J. CLARK JEFFERSON,
30 Park Row, Leeds, Agent for Applicant.