IMPROVEMENTS IN MACHINERY FOR CUTTING, DRESSING, AND SHAPING WOOD, STONE, AND OTHER SUB- STANCES
Year: 1877

page_text: LETTERS PATENT to John Patterson, of Kensington Gardens, in the County of
Middlesex, Gentleman, for the Invention of "IMPROVEMENTS IN MACHINERY
FOR CUTTING, DRESSING, AND SHAPING WOOD, STONE, AND OTHER SUB-
STANCES
"
Sealed the 6th July 1877, and dated the 7th May 1877.
PROVISIONAL SPECIFICATION left by the said John Patterson at the Office
of the Commissioners of Patents on the 7th May 1877.
JOHN PATTERSON, of Kensington Gardens, in the County of Middlesex, Gentleman.
"IMPROVEMENTS IN MACHINERY FOR CUTTING, DRESSING, AND SHAPING WOOD,
STONE, AND OTHER SUBSTANCES."
My Invention consists in the application of the machinery described in the
Specifications of Letters Patent granted to Alfred Vincent Newton on the 24th day
of March 1866, Number 872, and to myself on the 12th day of February 1876,
Number 587, to cutting, dressing, and shaping wood, stone, and other substances.
In performing my Invention I attach the chisels or other tools to vibrating levers
connected to springs actuated by a crank shaft, and I place the substance to be
operated upon on a table, which is moved to and fro in both directions by screws
and nuts, or racks and pinions, or ropes or hydraulic apparatus, or other equivalents,
or the substance to be operated upon may be fixed to a frame which is moved up
and down laterally or diagonally, or rotated. The substance under operation can
be moved towards or from the cutters by eccentrics mounted on cross shafts,
which are turned round simultaneously by worms and wheels, or by screws or
other equivalents.
The angle of the cutters can be varied to suit the nature of the substance under
operation by changing the fulcrum of the vibrating levers, and the depth of cut is
governed by a rigid bar, the position of which is also varied to correspond with
the position of the fulcrum of the vibrating levers.
When the substance under operation is placed horizontally the chippings can be
removed by a brush or by currents of air or steam, but when placed diagonally or
vertically these appliances are not required.

page_text: The cutters may be detached from the vibrating levers, and I then employ the
levers to act as hammers to work the cutters; in this arrangement it is desirable to
apply a spring to draw the cutters back after the blow is given.
When the machine is at work the crank shaft in revolving causes the chisels or
other tools to act on the substance under operation, and as the table to which the
substance is fixed is kept in motion the blows of the chisels or other tools are
distributed over the surface, or over as much as it may be required to cut, dress, or
shape.
The machine may be modified by leaving the substance under operation stationary,
and moving the cutting parts.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Patterson in the Great Seal Patent Office on the 6th November
.1877.
JOHN PATTERSON, of Kensington Gardens, in the County of Middlesex, Gentleman.
"IMPROVEMENTS IN MACHINERY FOR CUTTING, DRESSING, AND SHAPING WOOD,
STONE, AND OTHER SUBSTANCES."
My said Invention consists in the application of the machinery described in the
Specification of Letters Patent granted to Alfred Vincent Newton on the Twenty-
fourth day of March 1866, Number 872, which Letters Patent by Indenture
registered in the Great Seal Patent Office on the Seventh day of November, 1873,
were wholly assigned to me, and in the Specification of Lotters Patent granted to
me on the Twelfth day of February, 1876, Number 587, to cutting, dressing, and
shaping wood, stone, slate, marble, and other substances.
In order that my said Invention and the manner of performing the same may be
properly understood, I hereunto append two Sheets of explanatory Drawings, to be
herein-after referred to, representing two modifications of my improved machinery
for cutting, dressing, and shaping wood, stone, and other substances.
In these Drawings the same reference numerals are used to mark the same or like
parts wherever they are repeated.
"
In Fig. 1, which represents a side elevation of the machine, I attach the cutters
or tools 1 to vibrating levers 2, which are connected to springs 3 actuated by a
crank shaft 4, and I place the substance to be operated upon 5 on a table, bogie, or
other equivalent.
The angle at which the cutters or tools work can be varied to suit the nature of
the substance under operation by changing the fulcrum 6 of the vibrating levers 2
on the frame 7, and the depth of the cut may be governed by the bar or rail 8,
which is made of metal or wood, alone or in combination, or other material, the
position whereof can be varied as required by moving the fulcrum 6 and bar 8 into
any of the holes in the frame 7.
In the modification shewn in Fig. 2 I employ the levers 2 as hammers; these
hammers may be of any other shape, and they are connected to the springs 3 to actuate
the cutters or tools 1, which in this arrangement are disconnected from the levers
or hammers, and work through tool holders 9; these holders can be made of any
shape and of any convenient material, and may be furnished with a spring to relieve
the cutters or tools after impact.
There may be any number of cranks on the same shaft, and any number of such
shafts having one or more cranks thereon may be arranged in order one after the
other, or otherwise in the same machine.
When the machine is at work the crank shaft communicates a rapid motion to
the levers or hammers in sequence corresponding with the position of the cranks on
the said crank shaft, whereupon the cutters or other tools impinge successively on
any desired part of the surface of the substance under operation. Such substance

page_text: may be made to move so as to bring a fresh surface under the cutters or tools, or
the substance under operation may remain stationary, and the cutting, dressing,
or shaping machinery may be made to move the cutters or tools over its surfaces, or
motion may be imparted to both.
Modifications of my Invention are applicable to the dressing of millstones, the
cutting and picking of ironstone ore and coal, and to other purposes.
When the substance under operation is placed horizontally the chippings can be
removed by a brush or by currents of air or stean, but when placed diagonally or
vertically these appliances are not required.
Having now described the nature of my said Invention, and some of the modes
of performing the same, I declare that I claim,-
First. The vibrating levers holding the cutters or tools, and actuated through
springs and flexible connections between the crank shaft and the said levers when
applied to machines for cutting, dressing, or shaping wood, stone, slate, marble, and
other substances, substantially as set forth.
And, Secondly. The actuating levers and hammers through springs and flexible
connections between the crank shaft, and the said levers and hammers in machines
for cutting, dressing, or shaping wood, stone, slate, marble, and other substances.
In witness whereof, I, the said John Patterson, have hereunto set my hand and
seal, this Sixth day of November, One thousand eight hundred and seventy-
SAVAN
JOHN PATTERSON. (L.S.)