Improvements in the Construction of Machines for Grinding Plane Irons, Mitreing Irons, Edge Tools, Guillotine Knives (for Cutting Cloth, Leather, and Paper), Skates, and other Articles.
Year: 1887

page_text: Date of Application, 4th Nov., 1887
Complete Specification Left, 26th July, 1888
Complete Specification Accepted, 3rd Nov., 1888
Improvements in the Construction of Machines for Grinding Plane
Irons, Mitreing Irons, Edge Tools, Guillotine Knives (for Cutting
Cloth, Leather, and Paper), Skates, and other Articles.
THOMAS LEES and RALPH LEES Engineers, both of Park Foundry Hollinwood near
Manchester do hereby declare the nature of this invention to be as follows:-
This Invention relates to the improvements in the construction of Grinding
Machines to facilitate the obtaining of a fine cutting edge, as well as the saving
of time and labour.
These Improvements consist in the application of a composition or other wheel
which is fixed on a revolving spindle carried on a balanced lever so arranged as
to grind the article operated upon Hollow or Concave, and revolving at right
angles to the cutting edge of the article being ground, the Table having a
reciprocating motion so as to grind equally and truly the length required. By
lifting the balanced Lever the table is left clear and accessible and the article to
be ground can be easily fixed or removed.
By this Machine the Knives are ground Hollow or Concave and are thus
sharpened by whet-stone much sooner, and retain their continued cutting edges
Hat
longer and do not require regrinding so often as when ground only to a
surface.
'
Novamber 1887
THOMAS LEES.
RALPH LEES.

page_text: Improvements in the Construction of Machines for Grinding Plane
Irons, Mitreing Irons, Edge Tools, Guillotine Knives (for Cutting
Cloth, Leather, and Paper), Skates, and other Articles.
THOMAS LEES and RALPH LEES Engineers both of Park Foundry Hollinwood
near Manchester 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 improvements in the construction of Grinding
Machines to facilitate the obtaining of a fine cutting edge as well as of the saving
of time and labour.
These improvements consist in the application of a composition or other wheel
which is fixed on a revolving spindle carried on a balanced Lever so arranged as
to grind the article operated upon hollow or concave by revolving crosswise to
the cutting edge of the article being ground. The Table having a reciprocating
motion so as to grind equally and truly the length required. By lifting the
balanced Lever the Table is left clear and accessible and the article to be ground
can be easily fixed or removed.
By this Machine the Knives are ground hollow or concave and can be sharpened
by whet stone much sooner and will retain their cutting edge longer and do not
require regrinding so often as when ground only to a flat surface. By this
arrangement the temper of the steel is not interfered with and the knives are
not burned while being ground.
The Grinding wheel B is driven by a Belt from the pulley N, the pulley N
being on the same shaft and driven by the fast and loose pullies O.
The Grinding wheel B is mounted on a spindle carried on the end of the
Lever A, the lever A works on a fulcrum and the grinding wheel is balanced by
a moveable weight G at the other end of the lever A.
Under the lever A and fixed to the Frame of the Machine is a screw and Hand
wheel adjustment marked H the top of the screw H comes in contact with the
bottom side of the Lever A for the purpose of regulating the adjustment of the
grinding wheel B to the article being ground and to prevent the wheel grinding
too deep.
The table is fitted on a slide and has a reciprocating motion effected by the
alternate transferring of Belts, one of which is open and the other crossed, to and
from the fast and loose pullies D and actuated by the pulley P.
The Table is fitted with two adjustable stops K which come in contact with
the Lever I thus effecting the alternate changing of the Belts thereby giving the
reciprocating and automatic motion to the Table F.
The Table F carries an adjustable angular Bracket L on which the knife or
article to be ground is bolted and is held in the required position for grinding
by the lever M.

page_text: Having now described our invention and the mode or method in which the
Sane is performed and illustrated by the accompanying sheet of drawings with
letters of reference attached thereto we wish it to be understood that what we
claim is
First. The arrangement and construction of grinding machine as herein described
and illustrated.
Second. The application of an adjustable balanced Lever A carrying the grinding
wheel B crosswise to the cutting edge of the knife (as described and illustrated.
Third. The application of pullies D on the reversing shaft E giving reciprocating
motion to the Table F for grinding knives as described and illustrated.
THOMAS LEES.
RALPH LEES.