IMPROVEMENTS IN MACHINERY FOR CUTTING OR SHEARING SHEET IRON AND OTHER METALLIC SHEETS OR PLATES
Year: 1865

page_text: PROVISIONAL SPECIFICATION left by Richard Walters and Thomas
Edwin Meese Walters at the Office of the Commissioners of Patents,
with their Petition, on the 21st November 1865.
We, RICHARD WALTERS, of Pelsall, in the County of Stafford, Metal
Roller, and THOMAS EDWIN MEESE WALTERS, of Pelsall, aforesaid, Metal
Roller, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN MACHINERY FOR CUTTING OR SHEARING SHEET IRON AND OTHER METALLIC SHEETS
OR PLATES," to be as follows:-
Our Invention consists of machinery herein-after described for cutting or
shearing sheet iron and other metallic sheets or plates, whereby one or both
edges of sheets or plates of iron or other metals may be rapidly cut or
sheared. Our improvements consist in mounting circular cutters upon shafts
or axles with cylindrical filling pieces between the cutters on each shaft or
axle, which filling pieces form rolls which take hold of and conduct the plate
or sheet being sheared through the machine, the circular revolving cutters
at the same time cutting or shearing one or both edges.
In constructing machinery according to our Invention we use two shafts or
axles each carrying one or two cutters, according as the machine is required
to cut or shear one or both edges of the plate or sheet passed through the
machine. The said shafts or axles are mounted and geared together, and
driven after the manner of a pair of ordinary rolls. The cutters are mounted
upon the shafts or axles in the following manner:-Near one end of the axle
a circular boss or flange is cast upon or made in one piece with the said axle.

page_text: One of the circular cutters having a hole in its centre of the same size as the
axle is put upon the axle and made to bear against the before-mentioned boss
or flange. A series of cylindrical filling pieces having holes in them of the
same size as the axle are next placed upon the said axle, and afterwards a
second circular cutter similar to the first is placed upon the axle. A moveable
boss or flange is next placed upon the axle against the second cutter, and a series
of screws are passed through holes in the said second cutter and the filling
pieces, which said screws take into the fixed or first-mentioned boss or flange
on the shaft or axle. By means of the said screws the cutters and filling
pieces, are firmly connected to the shaft or axle, the number and thickness of
the filling pieces placed between the two cutters depend upon the width of
the plate or sheet to be sheared. The two shafts or axles provided with circular
cutters, filling pieces, and flanges, as described, resemble when mounted a pair
of ordinary cylindrical rolls, each having a pair of flanges or circular cutting
edges, the cutting edges of the cutters on one roll bearing against the cutting
edges of the cutters on the other roll. By means of set screws in the stand-
ards in which the shafts or axles work the cutters may be adjusted to each
other with the greatest nicety. When only one edge of the sheet or plate is
to be cut one cutter only is mounted on each shaft or axle. A guide box is
placed in front of the machine, through which guide box the metal plate or
sheet to be sheared is passed by hand until its end reaches the rotating circular
cutters, when it is seized by the said cutters, and its edge or edges cut or
sheared, the plate being conducted through the machine by the cylindrical
rolls made by the filling pieces described.