An Improved Appliance for Bending Spring Plates.
Year: 1886

page_text: Date of Application, 13th Apr., 1886.
Complete Left, 13th Jan., 1887.
Complete Accepted, 15th Feb., 1887.
An Improved Appliance for Bending Spring Plates.
We JOSEPH MITCHELL, of Chippinghouse Road, Sheffield, in the county of York
Engineer, and WILLIAM CODINGTON, of Harwood Street, Sheffield, Commission agent
do hereby declare the nature of our said invention for "AN IMPROVED APPLIANCE FOR
BENDING SPRING PLATES," to be as follows:-
This invention relates to improvements in appliance for bending spring plates and
consists of a cast iron block on which to shape the camber of the spring with a roller
to run over the top of the hot plate to bring it into shape.
In making I construct the cast iron block to any camber, with an eccentric working
on one or both ends thereof for the purpose of bending down the points of the hot
plate, the said eccentrics being furnished with a lever to press down the hot plate to
its required shape.
Bolted to the said camber block is a fork made of wrought iron inside which is
placed the rollers attached to which is a lever passed through a spiral spring and
having a screw thread and a hand wheel to facilitate the rise and fall of the rollers,
said lever passing through the top of fork to allow the operator to obtain hold and
leverage.
In each side of the said fork is a slot to allow the bolt to rise and fall freely
therein.
In bending a spring plate the said plate is heated as required and placed under the
roller, one or both ends is then held down by the eccentrics and the roller passed over
the said hot plate by pulling down the lever to one end and then to the other.
The roller is grooved in the centre so as not to press down the studs on the plate.

page_text: COMPLETE SPECIFICATION.
An Improved Appliance for Bending Spring Plates.
We, JOSEPH MITCHELL of Chippinghouse Road, Sheffield in the County of York,
Engineer and WILLIAM CODINGTON of Harwood Street Sheffield, Commission Agent
do hereby declare the nature of our said invention for "AN IMPROVED APPLIANCE
FOR BENDING SPRING PLATES 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 improvements in an appliance for bending spring plates
and consists of a cast iron bed on which to shape the camber of the spring with
rollers to run over the hot plate to bring it into shape.
In making we construct the bed to any camber on which is placed a camber plate
adjusted by set screws. At one end or at both if necessary is fixed a telescopic arm
for the purpose of holding one end of the spring plate while the other is being bent.
L
Attached to the bed and working on a pivot is a wrot iron fork inside which are
placed the rollers, with a rod passing through a spiral spring, the said rod having
screw thread on which works a hand wheel for the purpose of regulating the rise and
fall of the rollers, the said rod passing through the top of the fork to allow the
operator to obtain hold and leverage.
In each side of the fork is a slot allowing the rollers, to rise and fall freely.
Bending a spring plate the said plate is heated as required and placed under the
rollers; one end is then held down by the telescopic arm and brought to its required
camber by passing the roller over it, which is done by first pulling down the lever
to one end and then to the other.
A stud is fixed in the centre of the camber plate and the rollers pass on either side
of it.
The arm is made telescopic so that any sized spring may be held in position by it.
As a modification a lever may be used in the place of the hand wheel as shewn in
fig. 4 of the accompanying drawings.
The accompanying drawings illustrate our invention.
Fig. 1 is a side view in elevation shewing the moveable fork A having a rod B down
the centre with a thread at one end on which work a hand wheel C to regulate the
rise and fall of the rollers D, on the said rod is placed a spring E which holds the
rollers on the spring plate required to be bent, the plates can be altered to any camber
by changing the camber plate F for one of a different size and adjusting it by the
set screw G the plates are further held by the telescopic arm H which hold the one
or both ends of the plate whilst the roller is being passed over them.
Tiia wlan

page_text: Fig. 3 is a front view in elevation.
Fig. 4 is a front view in elevation shewing a leaver I to regulate the rise and fall
of the rollers instead of the hand wheel C.
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
Firstly Improvements in a spring bending machine having a moveable lever with
rollers attached thereto, the said rollers receiving pressure from a spiral spring working
on a rod inside a fork with a screw thread and a hand wheel or a lever at the top end
thereof, the whole forming a lever which when pulled from end to end of the camber
shapes the spring plate as desired.
Secondly in a canber bed easily attachable having a telescopic arm for holding
one end of the spring plate while the other is being bent.
Thirdly an Improved Appliance for bending spring plates as firstly, and secondly
claimed, described, and illustrated by the accompanying drawings.
GARLICK & MCGOWAN,
Agents for the Applicants.