NEW OR IMPROVED MACHINERY TO BE USED IN THE MANUFACTURE OR FINISHING OF FRYING PANS AND OTHER PANS, BOWLS, AND OTHER LIKE STAMPED METALLIC VESSELS OR ARTICLES
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by John Israel Parkes at the Office of
the Commissioners of Patents on the 16th October 1878.
JOHN ISRAEL PARKES, of Smethwick, in the County of Stafford, Manufacturer.
"NEW OR IMPROVED MACHINERY TO BE USED IN THE MANUFACTURE OR FINISHING
OF FRYING PANS AND OTHER PANS, BOWLS, AND OTHER LIKE STAMPED METALLIC
VESSELS OR ARTICLES."
My Invention consists of new or improved machinery, the parts of which are
constructed, arranged and worked substantially as herein-after described, to be used
principally for taking out or removing the wrinkles, puckers, or corrugations left
by the stamping process in the rims of frying pans and other pans, bowls, and other
like vessels or articles.
For convenience of description, I will describe my Invention as applied to the
finishing of frying pans.
The said machinery consists essentially of two conical rolls arranged one over
the other, the shaft of the bottom roll being inclined to the horizontal shaft of the
top roll at such an angle as will bring the opposed inclined surfaces of the two rolls
parallel to one another. The top conical roll is fixed rigidly on its horizontal shaft,
and rotatory motion is communicated to it from a parallel driving shaft by means of
toothed gearing. The bottom conical roll turns loosely on the end of its inclined
shaft, motion being given to the said bottom roll by frictional contact of the article
under operation. The said bottom conical roll is capable of a rising and falling
motion in the line of its shaft, so as to diminish or increase the distance between
its surface and the opposed surface of the upper roll. By the rising of the bottom
roll the requisite pressure or "bite" may be put on the article being operated upon,
and by the downward motion of the said roll the pressure may be removed from
the article. This rising and falling motion of the bottom roll is effected by making
the lower part of its shaft into a screw, the said screw taking into a screw box in
the frame of the machine. Rotatory motion is given to the said screw by means of a
lever. At the back of the two rolls and between their opposed surfaces a steel
cutter is stationed for cutting or paring the edge of the frying pan under
operation.

page_text: The inclination of the acting surfaces of the two conical rolls is the same as the
inclination of the rim of the frying pan to be finished.
In using the machine the stamped frying pan to be finished is placed upon the
bottom roll when the said bottoni roll is at its lowest position, the rim of the frying
pan fitting upon the said bottom roll. By means of the lever described the screwed
shaft of the bottom roll is raised in its frame, and the acting surface of the said
bottom roll thereby made to approach the acting surface of the top roll so as to grip
between the two rolls the rim of the frying pan. By the rotation of the top roll a
rotatory motion is given to the said pan and also to the bottom roll, and by the
pressure of the two rolls the wrinkles, puckers or corrugations in the rim of the
frying pan are taken out or removed therefrom, and the rim is at the same time
planished. By the motion and pressure of the rolls the edge of the rim of the
rotating pan is forced towards the larger ends of the rolls and brought into contact
with the stationary steel cutter between the rolls, and the edge of the rim is pared
or cut by the said cutter.
The rim of the frying pan having been thus finished, the bottom roll is lowered
from the top roll, when the pan is released and may be removed from the bottom
roll and another pan put in its place, and the operations described are repeated.
The machine described may be used for creasing the "lag" of flat-bottomed pans
and other like stamped articles; that is perfecting the angle at the junction of the
rim or side of the article with the bottom.
In finishing baking pans, bowls, dish plates and other like stamped articles or
vessels by the use of my Invention, the shape of the acting surfaces of the rolls is
varied according to the shape of the rim or side of the article or vessel to be
finished.