IMPROVEMENTS IN PUNCHING DINAGGING MATTENDE " AND TV ADDADAMITO MOKKETED FORDBWYTU AND PROVISIONAL SPECIFICATION
Year: 1871

page_text: LETTERS PATENT to John M°Kay, of 38, Park Road, Newcastle-on-
Tyne, and William Macgeorge, of 1, Castle Court, Birchin Lane,
London, for the Invention of "IMPROVEMENTS IN PUNCHING
DINAGGING MATTENDE
"
AND TV ADDADAMITO MOKKETED FORDBWYTU
AND
PROVISIONAL SPECIFICATION left by the said John McKay and
William Macgeorge at the Office of the Commissioners of Patents,
with their Petition, on the 22nd May 1871.
We, JOHN M°KAY, of 38, Park Road, Newcastle-on-Tyne, and
WILLIAM MACGEORGE, of 1, Castle Court, Birchin Lane, London, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
PUNCHING AND RIVETTING MACHINERY, AND IN APPARATUS CONNECTED TREREWITH,'
to be as follows :—
"
This Invention consists of two levers with their fulcra held in an
immovable fixing or in a swivel or universal joint, so that they can open
apart, or open and close together, and move sideways. One lever may
be a fixture and the other moveable on its fulcrum, or both may
be moveable by hydraulic or other suitable power. These levers are

page_text: preferred to stand vertically, and they carry punches or dies at their free
ends for punching or rivetting, but they may be worked at any con-
venient inclination.
The machine may be altogether or partially portable.
This Invention also consists of an hydraulic press for working the 5
punching and rivetting machine like the ordinary construction of such
presses, but having a separate plunger out of each end of the hydraulic
cylinder, each plunger moving one of the above-named levers.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John M°Kay and William Macgeorge in the Great
Seal Patent Office on the 21st November 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
MCKAY, of 38, Park Road, Newcastle-on-Tyne, and WILLIAM MAC-
GEORGE, of 1, Castle Court, Birchin Lane, London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-second day of May, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said John McKay and William Macgeorge, Her
special licence that we, the said John M'Kay and William Macgorge,
our executors, administrators, and assigns, or such others as we, the
said John McKay and William Macgeorge, our 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 Islands, and
Isle of Man, an Invention for "IMPROVEMENTS IN PUNCHING AND RIVETTING
MACHINERY, AND IN APPARATUS CONNECTED THEREWITH," upon the condition
(amongst others) that we, the said John McKay and William Mac-
george, our executors or administrators, by an instrument in writing
under our, 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.

page_text: NOW KNOW YE, that we, the said John M°Kay and William Mac-
george, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
DESCRIPTION OF DRAWINGS.
A, B, and A³, B¹, are levers standing vertically and working upon a
centre O supported by cast-iron girders over the pit, which contains
hydraulic or other machinery for working them. These levers are of a
circular form behind, that is, on the side furthest from the centre O, and
are held in position by circular slides or bearings E, F, E, F, which are
adjusted and retained in their places by bolts C, D, C¹, D¹, &c. By
opening the lower jaws B, B¹, the upper jaws A, A¹, will close, and by
closing B, B', A, A', will open. The upper ends of these levers A, B, A', B¹,
carry punches or dies, between which are placed plates to be punched or
rivetted together. G and H are the rams of a compound hydraulic
press which may be used for working this machine. These rams are
separate, each being connected by links or rods with the lower ends B, B',
of the levers A, B, A¹, B², and as they pass out of opposite ends of a
single cylinder any pressure received by G will be equally felt by H,
and their movement being communicated to the levers actuates the
punches or dies.
In order to start, reverse, or stop the machinery valves are placed in
any convenient position to govern the inlet and outlet of high-pressure
water received from an accumulator or other source through the supply
pipe K. Any suitable arrangements of hydraulic valves may be employed
for the purpose of handling the machine. L is a pipe leading to a waste
tank, and M another leading into the hydraulic cylinder, which latter
contains plungers G and H. Slotted links connect the handle P with a
valve N which communicates between K and M and a valve N' which
communicates between M and L. When one of these valves opens the
other remains closed, being held down by its loaded lever. In the
position shewn on the Drawing the handle P standing vertically both
valves are shut, but by moving P away from the machine the valve N
opens, N¹ being unaffected because of the slotted link moving freely
downwards. Thus high-pressure water enters the hydraulic cylinder,
and forcing out the plungers G and H gives motion to A, B, and A¹, B¹.
Plates standing between the dies are punched or rivetted as required.
By reversing the handle P, that is, by pushing it towards the machine,

page_text: N closes and N¹ is raised, opening an exit for the water from under
the plungers G and H. The weight of the levers A, B, and A¹, B¹, may
be found sufficient to force the water out, but if not further weight may
be added to accelerate their movement.
Other systems of working these levers by hydraulic cylinders or other
mechanical contrivances may be adopted. One lever, as A, B, may be
fixed and the whole motion given to the other, A¹, B¹. Or the frame
carrying the levers may be mounted on a swivel so that the entire
machine may swing about with its hydraulic cylinders, receiving high-
pressure water through the trunnions of the swivel frame. Lastly, the
machine may be made portable.
Having thus described the nature and object of our Invention, and
the manner in which the same may be carried into effect, we would
have it understood that we do not confine or restrict ourselves to the
precise details, proportions, or construction of apparatus shewn, nor to
the use of hydraulic power only, nor do we claim the particular con-
struction of valves, nor double hydraulic press, except when used for
working the other parts as described; but what we do claim are, —
-
Firstly. The arrangements of levers constituting a punching or
rivetting machine as described.
And, secondly. The application of a double hydraulic press to work
these levers as described.
In witness whereof, I, the said William Macgeorge, on behalf of
self and the aforesaid John McKay, have hereunto set my hand
and seal, this Twentieth day of November, in the year of our
Lord One thousand eight hundred and seventy-one.
TA7M MACOLORAD