A New or Improved Machine for Bending Plates, the Machine being also applicable for Bending Tubes and Bars.
Year: 1897

page_text: Date of Application, 9th Dec., 1897-Accepted, 19th Feb., 1898
COMPLETE SPECIFICATION.
A New or Improved Machine for Bending Plates, the Machine being
also applicable for Bending Tubes and Bars.
I, ALEXANDER SUTTON, of 23, Neville Street, Claremount, Halifax, in the County
of York, Engineer, 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 the construction and arrangement of a new form of
machine for bending metal plates. The machine is so constructed that by the
use of a single pair of rollers I can bend plates to any angle and to any radius
of bend.
The machine is adjustable to take in different thicknesses of plates and it can
be worked either by manual labour or steam or other power.
Such being the nature and object of my invention I will describe the same more
fully and for that purpose make reference to the accompanying sheets of drawings
wherein Fig. 1 is a side elevation of my plate bending machine, Fig. 2 plan view
on rather an enlarged scale and Figs. 3 and 4 details hereinafter referred to. 1 is
the framework of the machine and 1 the table. The plate bending rollers are
shewn at 2 and 3, being geared together at their bottom ends by toothed wheels 4
and 5 the former of which receives its motion from worm wheel 6 operated by
worm 7 fixed upon shaft 8 which shaft is driven by gear wheels 9 operated by
handle 10 on shaft 11. On the other end of shaft 11 is a fly wheel 12 but a pair
of driving pulleys may be fixed to drive the machine by steam or other power.
The gudgeon or shaft of the plate bending roller 3 passes through a plate 13 con-
nected to pillar or standard 14 by screws 15 passing through slots 16 in the fixed
table 1, which slots 16 may be V shaped if thought desirable. A bracket 17
is secured to the framework 1 provided with a screw thread in which works a
screw 17 provided with a hand wheel 17b. When it is necessary to move the
plate bending roller 3 nearer to or further from the roller 2 this hand wheel is
rotated in one or other direction, by which means the plate 13. and pillar 14 move
together in one or other direction as required to adjust the position of the roller 3.
The gudgeon at the top of the roller 3 is supported in a lug 18 to keep the said
roller vertical. The other plate beading roller 2 can be made to advance to or
recede from the roller 3 by means of the sliding keys 19, 19", actuated by screw 20.
This is shewn more clearly in Fig. 3. The gudgeon on the upper end of roller 2
is surrounded by a collar 21, and the sliding key 19" is wedge shaped and fits
into a corresponding groove on the collar 21. The collar 21 works in the slot 22
formed in the fang piece 23, which fang piece is held rigid to the pillar 14 by
e long nut 24. Upon the sliding keys 19, 19" being advanced or withdrawn by
the rotation of screw 20 the roller 2 is moved up to or away from the roller 3
a will be readily understood.
Fig. 4 shews a plate 25 in position between the bending rollers 2 and 3, ready
for bending, the rollers rotating in the direction shewn by the arrows. The plate 25
is held whilst bending by a bar 26 and screw 27. On the bottom of the bar 26

page_text: is a projection or bracket 28 fitting into slot 29 in the plate 30 fast to the bottom
of roller 2.
It will be understood that by changing the bending rollers I can bend plates to
any radius required and I can bend them to any angle. The plate 30 and table 1°
may be marked off into angles to facilitate the bending of different angles in the
machine.
By the use of a machine as above described I am enabled to do far more work
than is done in the present machines having three or five rollers as I complete the
bending at one operation, whilst when using three or five rollers the plate must be
passed through several times to give a sharp bend.
By forming grooves in the bending rollers I can bend T iron bars and tubes
which is a great advantage.
•
In conclusion I must remark that I do not limit myself to the method of
driving the plate bending rollers as that may be modified without departing from
the main features of my invention.
said
Having now particularly described and ascertained the nature of my
invention and in what manner the same is to be performed, I declare that.what
I claim is:.
Firstly. In a machine for bending metal plates tubes or bars the employment
of rollers such as 2 and 3 operated in the manner and for the purposes set forth.
Secondly. In a machine for bending metal plates tubes or bars the employment
of rollers such as 2 and 3 with means for adjusting same to the thickness of plates
to be bent in the manner and by the means substantially as herein shewn and
described.