Apparatus for Holding Castings whilst 'being Planed or Shaped
Year: 1863

page_text: Apparatus for Holding Castings whilst 'being
Planed or Shaped.
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LETTERS PATENT to John Lawson, of Hope Foundry, Leeds, in th
County of York, for the Invention of "IMPROVEMENTS IN APPARATU
FOR HOLDING CASTINGS AND OTHER PIECES WHILST BEING PLANED O
SHADED."
PROVISIONAL SPECIFICATION left by the said John Lawson at the
Office of the Commissioners of Patents, with his Petition, on the
14th January 1863...
ai
I, JOHN LAWSON, of Hope Foundry, Leeds, in the County of York, do
hereby declare the nature of the Invention for "IMPROVEMENTS IN APPARATUS
FOR HOLDING CASTINGS AND OTHER PIECES WHILST BEING PLANED OR SHAPED," to be
as follows:-
This Invention has for its object improvements in apparatus for holding
castings and other pieces whilst being planed or shaped, and is applicable
more especially for castings or pieces which do not require to be planed. or

page_text: shaped all over, but at several different places at a distance the one from the
other.
The apparatus consists of a base plate on which a turntable is mounted,
and on the turntable is a standard with its face perpendicular to the plane
in which the turntable rotates. The castings or pieces to be operated on
are bolted to a slide, which is capable of traversing the standard. The turn-
table is rotated by means of a crank handle giving motion to spur wheels or
gear, and the slide on the standard is caused to traverse, by preference, by a
screw which also is rotated by means of a crank handle acting with bevilled
gear or otherwise.
The apparatus may either form part of a planing or shaping machine, or
may be separate therefrom, and with the castings or pieces upon it may be
placed opposite the planing or shaping machine when work is to be done.
The power which this apparatus gives of rotating the castings or pieces in
front of the tool of the machine, and also of raising and lowering the castings
or pieces, will allow of many different parts of the castings or pieces being
brought within reach of the tool of the machine without resetting the work,
and, if desired, horizontal and vertical planing may be done at different parts
of each casting or piece, and the apparatus ensures the truth of these several
planings the one-with the other.
'
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Lawson in the Great Seal Patent Office on the 18th:
July 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
LAWSON, of Hope Foundry, Leeds, in the County of York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of January, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-sixth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Lawson, Her special licence that I, the said John Lawson,
my executors; administrators, and assigns, or such others as- I, the said-
John Lawson, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use, exercise, and'
vend, within the United Kingdom of Great Britain and Ireland, the Channel'

page_text: "
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN APPARATUS
FOR HOLDING CASTINGS AND OTHER PIECES WHILST BEING PLANED OR SHAPED,"
upon the condition (amongst others) that I, the said John Lawson, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Seal
Patent Office within six calendar months next and immediately after the
date of the said Letters Patent.
NOW KNOW YE, that I, the said John Lawson, do hereby declare the
nature of the said Invention, and in what manner the same is to be per
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say :-
This Invention has for its object improvements in apparatus for holding
castings and other pieces whilst being planed or shaped, and is applicable
more especially for castings or pieces which do not require to be planed or
shaped all over, but at several different places at a distance the one from the
other.
The apparatus .consists of a. base plate on which a turntable is mounted,
and on the turntable is a standard with its face perpendicular to the plane
in which the turntable rotates. The castings or pieces to be operated on
are bolted to a slide which is capable of traversing the standard. The turn-
table is rotated by means of a crank handle giving motion to spur wheels or
gear, and the slide on the standard is caused to traverse, by preference, by a
screw, which also is rotated by means of a crank handle acting with bevilled
gear or otherwise.
The apparatus may either form part of a planing or shaping machine, or
may be separate therefrom, and with the castings or pieces upon it may be
placed opposite the planing or shaping machine when work is to be done.
The power which this apparatus gives of rotating the castings or pieces in
front of the tool of the machine, and also of raising and lowering the castings
or pieces will allow of many different parts of the castings or pieces being
brought within reach of the tool of the machine without resetting the work,
and, if desired, horizontal and vertical.planing may be done at different parts
of each casting or piece, and the apparatus ensures the truth of these several
planings the one with the other.
Having thus stated the nature of my said Invention, I will proceed more
fully to describe the manner of performing the same.

page_text: DESCRIPTION OF THE DRAWINGS.
The Drawings represent a front elevation, a plan, and part of a side
elevation. A is the driving shaft of the planing machine,, from which motion
is communicated by the sliding pinion B to the large wheel C, on the face of
which is a stud or crank pin D, the position of which, and the consequent
length of motion produced thereby is capable of adjustment, as is well under-
stood. The crank pin D works up and down in the slot in the lever E, só as
to give a reciprocating movement thereto on its axis E¹. This lever is con-
nected to the slide X (which holds the cutting tool) by means of the con-
necting rod F; this slide X is mounted in a frame G, which is mounted on
the bed H. The frame G is capable of being moved into any desired position
of the bed by means of the screw I; this screw I also imparts a gradual
feed motion to the frame G on the bed E during the operation of cutting or
shaping, as is well understood by machine makers; and I would state, that
I make no claim to the planing or cutting machinery shown; the Invention
consisting in the combined arrangement of mechanism for holding the work
which is to be planed or cut.
The work in this form of "castings or pieces to be shaped or planed is,
fastened to the standard or vertical plato or table J, which is mounted and
capable of sliding on the uprights K, at the lower end, of which is a circular
plate O resting upon a corresponding circular bed plato P fixed to a suitable
foundation. The vertical plate or table J, with its frames or uprights K, on
which it slides, and circular plate O are made to turn at pleasure upon the
bottom or bed plate by means of the crank handle shaft L and the pinion M,
working into the large fixed wheel N around the fixed bed plate P, so. that
castings may have one part brought under the operation of the cutting tool,
and then another, without unloosing the bolts or disturbing the castings.
In the Drawings, there are five similar castings Q, Q, fixed, in position on
the upright plate or table J, such castings being parts of the framings of
spinning machines, and are shown in the Drawings as an example of one class
of work for which the machinery combined according to the Invention is
peculiarly applicable.
The pinion R on the end of the driving shaft A drives the wheel 'S, which
runs on a fixed stud or pin secured to the bed H. On the inside face of this
wheel is an excentric groove T (shown in dots) which at every revolution
gives a sudden back and forward movement to one extremity of the lever. U,
which is communicated at the other end to the lever V, and by a short con-

page_text: necting rod to the lever V, on which is an ordinary feed catch driving at
intervals the spur wheel W on the end of the screw I.
Having thus described the nature of my said Invention, and the manner
of performing the same, I would have it understood that I make no claim to
any of the mechanical parts separately; but what I claim is the combined
arrangement of mechanism herein described for holding work when being
planed or shaped.
In witness whereof, I, the said John Lawson, have hereunto set my
hand and seal, this Seventeenth day of June, in the year of our Lord
One thousand eight hundred and sixty-three.
JOHN LAWSON. (L.S.)