Improvements in Machines for Bending Plates.
Year: 1895

page_text: Date of Application, 26th Nov., 1895
Complete Specification Left, 25th Aug., 1896-Accepted, 26th Sept., 1896
Improvements in Machines for Bending Plates.
HUGH SMITH, HUGH SMITH Junr., and OSBOURNE SMITH, Engineers, Possil
Engine Works, Glasgow, in the County of Lanarkshire, do hereby declare the
nature of this invention to be as follows:-
In plate bending machines as shown on drawings hereunto appended, in which
Figs. 1 and 2, Sheet 1, represent, respectively, an end and front elevation of a
plate bending machine :-
Our invention consists, 1st: In making the two bottom or under rollers A and B
adjustable out and in, that is, that the distance between the centres of the said
rollers may be altered as may be required for dealing with different thicknesses of
plates. As shown in Fig. 1, Sheet 1, the end journals of the rollers A and B are
carried in bushes C and D, respectively, which again are carried in the two
cheeks E and F. The aforesaid bushes C and D can be moved out or in and
slide on two curved or flat surfaces so arranged that the distance from the centres
of the rollers A and B to the centre of the shaft G will always remain the same,
or as nearly so as not to affect the proper working of the gear wheels H and K.
The two under rollers A and B in plate bending machines of extra length are
supported by rollers as shown in Figs. 2, 3, and 4. In Figs. 3 and 4, L represents
a crossbeam carried from the two bottom beams X of the machine. M represents
brackets which carry the journals of the supporting rollers, which brackets can
slide out and in similarly to the bushes C and D already described. The sliding
brackets M, Figs. 3 and 4, and the sliding bushes C and D, Fig. 1, are held in
position by packing blocks P and screws S, the packing blocks P being of various
thicknesses as may be required.
.
Our invention consists, 2nd: In the method adopted for shifting the said rollers
out and in. Fig. 5, Sheet 1, shows an end view of the rollers A and B.
A strap
or straps are attached to the top beam N or end brackets Y and pass underneath
the rollers A and B, so that by raising the aforesaid top beam N or end brackets Y,
the rollers A and B are drawn together. For the purpose of putting out the
rollers, a wedge block or blocks T are placed between the top roller Z and the two
under rollers A and B, and by bringing down the roller Z the two under rollers A
and B are forced apart.
Our invention consists, 3rd: In the application of hydraulic power. W, W. 1,
Figs. 1 and 2, Sheet 1 represent two hydraulic cylinders attached to the
cheeks E and F, respectively, for the purpose of raising and lowering the
roller Z.
We may also apply the arrangements as hereinbefore described, 1st., 2nd., and 3rd.,
to plate bending machines made without the top beam N for supporting the top
roller Z.
Dated this 25th day of November 1895.
HUGH SMITH.
HUGH SMITH, JUNR.
OSBOURNE SMITH.

page_text: improvements in Machines Ior Bending Plates.
HUGH SMITH, HUGH SMITH Junr., and OSBOURNE SMITH, Engineers, Possil
Engine Works, Glasgow, in the County of Lanarkshire, 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 :—
In plate bending machines as shown on drawings left with the Provisional
Specification, in which Figs. 1 and 2, Sheet 1, represent, respectively, an end and
front elevation of a plate bending machine.
Our invention consists, 1st: In making the two bottom or under rollers A and B
adjustable out and in, that is, that the distance between the centres of the said
rollers may be altered as may be required for dealing with different thicknesses of
plates. As shown in Fig. 1, Sheet 1, the end journals of the rollers A and B are
carried in bushes C and D. respectively, which again are carried in the two
cheeks E and F. The aforesaid bushes C and D can be moved out or in and
slide on two curved or flat surfaces so arranged that the distance from the centres
of the rollers A and B to the centre of the shaft Gwill always remain the same,
or as nearly so as not to affect the proper working of the gear wheels H and K.
The two under rollers A and B in plate bending machines of extra length are
supported by rollers as shown in Figs. 2, 3, and 4. In Figs. 3 and 4, L represents
a crossbeam carried from the two bottom beams X of the machine. M represents
brackets which carry the journals of the supporting rollers, which brackets can
slide out and in similarly to the bushes C and D already described. The sliding
brackets M, Figs. 3 and 4, and the sliding bushes C and D, Fig. 1, are held in
position by packing blocks P and screws S, the packing blocks P being of various
thicknesses as may be required.
Our invention consists, 2nd: In the method adopted for shifting the said rollers
out and in. Fig. 5, Sheet 1, shows an end view of the rollers A and B.
A strap
or straps O are attached to the top beam N or end brackets Y and pass underneath
the rollers A and B, so that by raising the aforesaid top beam N or end brackets Y,
the rollers A and B are drawn together. For the purpose of putting out the
rollers, a wedge block or blocks T are placed between the top roller Z and the two
under rollers A and B, and by bringing down the roller Z the two under rollers A
and B are forced apart.
Our invention consists, 3rd: In the application of hydraulic power. W, W. 1,
Figs. 1 and 2, Sheet 1, represent two hydraulic cylinders attached to the
cheeks E and F, respectively, for the purpose of raising and lowering the
roller Z.
We may also apply the arrangements as herein before described, 1st., 2nd., and 3rd.,
to plate bending machines made without the top beam N for supporting the top
roller Z.
.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1st. The arrangement to allow of adjusting the rollers out and in, as described
in connection with Figs. 1, 2, 3, and 4, Sheet 1, by means of sliding bushes for
carrying the roller journals, and in the case of long plate bending machines, by the
additional sliding brackets or bushes carrying the journals of supporting rollers, as
herein before described 1st. in the foregoing specification.
2nd. The arrangement or method for shifting or moving the rollers out and in as

page_text: described in connection with Fig. 5, Sheet 1, by means of a strap or straps and
wedge block or blocks as herein before described 2nd. in the foregoing specification..
3rd. The application of hydraulic power for raising and lowering the top roller,
as hereinbefore described 3rd. in the foregoing specification, and in connection with
Figs. 1 and 2, Sheet 1.
4th. The arrangements as hereinbefore described 1st., 2nd., and 3rd. applied to
plate bending machines made without the top beam for supporting the top roller.
Dated this 25th day of August 1896.
HUGH SMITH.
HUGH SMITH, JUNR.
OSBOURNE SMITH.