OR IMPROVED GEARING OR MECHANISM FOR ACTUATING PUNCHING MACHINES, PRESSES, LIFTING JACKS, AND FOR STEERING VESSELS, AND FOR OTHER LIKE PURPOSES
Year: 1877

page_text: PROVISIONAL SPECIFICATION left by Benjamin William Rogers at the
Office of the Commissioners of Patents on the 17th May 1877.
BENJAMIN WILLIAM ROGERS, of Stourport, in the County of Worcester, Machinist.
"NEW OR IMPROVED GEARING OR MECHANISM FOR ACTUATING PUNCHING MACHINES,
PRESSES, LIFTING JACKS, AND FOR STEERING VESSELS, AND FOR OTHER LIKE
PURPOSES."
My said Invention consists of a winch or lever connected in the manner herein-
after explained to the screw of the punching machine, stamp, or press, or other screw
or axis, by turning which winch or lever the screw is made to advance in, or retire
from its screw box, or the axis to turn with great power.
I will describe my Invention as applied to a punching machine. The punching
tool is fixed in the lower end of a strong screw bolt, working in a screw box con-
nected firmly with the body of the machine. The upper end of the screw bolt is
cylindrical, and on the said cylindrical part is a collar to which is fixed a toothed
wheel. The said collar is connected to a forked piece embracing the body of the
machine, by which forked piece the collar is prevented from turning. It can, how-
ever, rise and fall with the screw bolt. Above the said toothed wheel and lying
close upon it is a second toothed wheel which is keyed to the cylindrical part of the
screw bolt and turns with it. Upon the cylindrical part of the screw bolt a forked
lever or arm turns, provided at its outer end with a handle for turning it. The
fork embraces the two toothed wheels described, and also carries two other toothed
wheels which gear with those on the screw bolt. The wheels carried by the handle
are fixed together, and turn upon an axis in the fork of the said handle. The said
wheels gear respectively with the wheels on the screw bolt
The several wheels have different numbers of teeth. For the sake of illustration
I will suppose that the upper wheel on and turning with the screw bolt has twenty-
five teeth; and that the upper wheel carried by the handle and engaging the said
wheel on the bolt has twelve teeth. The lower wheel carried by the handle has
thirteen teeth, and gears with the lower wheel on but not turning with the screw
bolt having twenty-four teeth. On turning the arm or lever round once the wheel
fixed to the screw bolt will be made to advance in consequence of the differential

page_text: action of the several teeth to the extent of nearly two teeth, and will turn round
the screw to which it is attached to an equivalent extent, and thereby cause the
screw to advance in its box with great power.
By varying the number of teeth on the respective wheels the differential action
may be increased or diminished to any desired extent, and consequently the advance
of the screw may be effected with any desired power.
My Invention is applicable to all purposes where a screw or screw bolt is required
to be advanced or withdrawn with great power.
My Invention is also applicable to various purposes where it is required to give a
powerful rotatory motion to an axis, as, for example, in actuating the barrel of
a crab or crane, or working the chains of the apparatus used for steering vessels.