IMPROVEMENTS IN MACHINERY FOR MANUFACTURING OR PREPARING IRON AND OTHER METAL PROVISIONAL SPECIFICATION
Year: 1863

page_text: LETTERS PATENT to Henry Griffith Craig, of Passage West, in the County
of Cork, in Ireland, of the Firm of William and Henry Brown and Craig,
of the same Place, Ship-builders, for the Invention of "IMPROVEMENTS IN
MACHINERY FOR MANUFACTURING OR PREPARING IRON AND OTHER METAL
PROVISIONAL SPECIFICATION left by the said Henry Griffith Craig .at
the Office of the Commissioners of Patents, with his Petition, on the
25th June 1868.
I, HENRY GRIFFITH CRAIG, of Passage West, in the County of Cork, in
Ireland, of the Firm of William and Henry Brown and Craig, of the same
Place, Ship-builders, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IM MACHINERY FOR MANUFACTURING OR PREPARING IRON AND
OTHER METAL PLATES FOR SHIP-BUILDING AND OTHER PURPOSES," to be as follows:-
My machinery consists of a multiple drilling and countersinking machine,
whereby I am enabled to drill a number of holes, at regulated distances apart,
and countersink the same without moving the plate, (as is required when
using the mechanism hitherto and used for the aforesaid 'purposes,) or by one
opèration: This machine, as I at present prefer to construct it, consists of a

page_text: wormed shaft acting on corresponding worms on the mandrils of the drills and
countersinkers; (these I prefer to make all in one.) Upon the wormed shaft
being set in motion by driving gear, the drilling and countersinking will
be effected, and in order to regulate the distances of the drills one from
another, I make use of regulating gearing, and by a travelling table the iron
or metal plate is brought under the drilling and countersinking tools as
required.
My machinery also consists in arrangements of mechanism for shearing
and planing the iron or metal plate. These arrangements consist of rotating
cutter discs, between which the plate is brought by a travelling table. A cutter 1
may be fixed on the edge or side of the machine for planing the edges of the
cut plate, and for punching there is a travelling table moveable by means of
gearing, with adjustable stops giving an intermittent action, so that the plate
may be brought under the punches at given times and regulated distances.
These machines may be put in motion by steam power or otherwise, and 1
although the course of operation with one plate only is mentioned, the same
will apply to more than one plate if found desirable.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Griffith Craig in the Great Seal Patent Office on the
24th December 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
GRIFFITH CRAIG, of Passage West, in the County of Cork, in Ireland, of the
Firm of William and Henry Brown and Craig, of the same Place, Ship-builders,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of June, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Henry Griffith Craig, Her special licence that I, the said Henry
Griffith Craig, my executors, administrators, and assigns, or such others
as I, the said Henry Griffith Craig, 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 Islands, and Isle of Man, an

page_text: Invention for "IMPROVEMENTS IN MACHINERY FOR MANUFACTURING OR PREPARING
IRON AND OTHER METAL PLATES FOR SHIP-BUILDING AND OTHER PURPOSES," upon the
condition (amongst others) that I, the said Henry Griffith Craig, 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 Henry Griffith Craig, 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 :--
My improvements relate, first, to multiple drilling and countersinking
mechanism, whereby I am enabled to drill a number of holes at regulated
distances apart, and to countersink the same without moving the plate, as is
required, when using the mechanism bitherto adopted and used for the pur-
poses aforesaid, or by one operation; and I can, when required, use my
mechanism for countersinking without drilling, or drilling without counter-
sinking. And my said machinery consists of a shaft which may be wormed
along its entire length, or wormed at intervals, or have a worm or worms keyed
thereon or otherwise secured thereto, which worm shaft acts on corresponding
worms on the shafts or rods of the drills, or of the countersinkers, or of both.
Upon the worm shaft aforesaid being set in motion by driving gear, the
drilling and countersinking (either or both them) will be effected.
order to regulate the distances of the one from the other I have the drill
holding-down plate D, bereafter referred to, spaced or marked into inches and
parts of inches, or make use of regulating gearing or templates, and by a
moveable or travelling table the iron or metal is brought up under or with-
drawn from the drilling and countersinking tools, or either of them, if used
alone. The pressure on the drills I communicate from above or below by
means of hydraulic screw, rack, or other mechanism. I prefer, however, to
apply the pressure to press up from beneath by hydraulic mechanism.
In
My machinery also comprises arrangements of mechanism for shearing and
planing the iron or metal plate. These arrangements consists of rotating cutter
discs, between which the plate is brought by a travelling table. A tool or
cutter may be fixed in a compound or self-acting or fixed rest on the edge or
side of the machine for plaing the edges of the cut plate. When desired,
punching could be effected by arrangements consisting of a travelling table

page_text: moveable by means of gearing with adjustable stops giving an intermittent
action, so that the plate may be brought under the punches at given times and
regulated distances, and these arrangements may, if desired, be applied to
ordinary punching machines. These machines may be put in motion by steam
or other power; and although the course of operation with one plate only is
mentioned, the same will apply to more than one plate, if desired.
. Having thus particularly described the nature of the said Invention by
defining the character and setting forth the peculiar constituent parts of the
mechanism comprehended therein or appertaining thereto, I now proceed to
further exemplify the same, and describe in what manner the same is to be
performed or put in practical operation, by reference to the illustrative Draw-
ings accompanying this Specification, by the words, figures, and letters
following that

page_text: movement; N,N, bydraulic cylinders. The other parts shewn at Sheet 1 will
be understood by mechanicians by inspection of the Drawings without particular
description thereof.
Sheet 2 shews several views of the shearing and planing arrangements,
Fig. 1 being a front or longitudinal elevation; Fig. 2, end elevation shewing
the travelling table; Fig. 3, enlarged view shewing the lifting arrangements
for bringing the work to the cutter; Fig. 4, plan of the same.
a denotes the cutter discs or circular shearing tools, the axes of which pass
through the supporting casting of the machines, and have each a toothed
wheel on its axis, the upper toothed wheel being on the same axis as the large
toothed wheel e (partly dotted), worked by a pinion on another axle which
carries the driving drums f,f,f. The axle d likewise carries a toothed pinion
9, which works another toothed wheel h, the axle of which has on its end a
bevil wheel, forming part of the bevil and clutch gear shewn by the Drawing,
being the same as usually adopted by engineers for similar purposes, by means
of which gear the travelling table is caused to traverse backwards and forwards,
the handle i being provided for throwing the same into and out of gear. It
will seen that a planing tool k is fixed on the edge of the travelling table,
and by using this machine we can plane without shearing, or shear without
planing, as the said planing tool can be removed by unscrewing the same when
the shears only are to be employed, and to plane only the shears must be
taken away; or by using both plane and shears, the two operations of shearing
and planing will be performed at once.
Sheet 3 shews several views of the arrangements of the punching apparatus.
Fig. 1, side elevation; Fig. 2, end elevation; Fig. 3, partial vertical section.
At Fig. 1 the portion of the Drawings from X to x shews the punching
arrangements, and from X X to XX the shearing arrangements. The particular
points of difference between my arrangements of mechanism and that heretofore
adopted consists in having a travelling table A, which is worked from the
driving wheel of the machine by a camb motion B, B, communicating by the
system of levers shewn on the Drawings with the travelling table. The other
parts will be understood by mechanicians on inspection of the Drawings
without any particular description thereof.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, I hereby declare
that I claim the multiple drilling arrangements, the shearing and planing
arrangements, and the punching and shearing arrangements as regards the
manner of arranging and using the same, as herein set forth, or any mere equi-

page_text: valent for the same; but I do not claim the constituent parts thereof when
taken separately and not used for the purposes of my said Invention.
In witness whereof, I, the said Henry Griffith Craig, have hereunto set
my hand and seal, this Third day of December, in the year of our
Lord One thousand eight hundred and sixty-three.
Witness,
GEORGE MARSHALL.
H. G. CRAIG. (Ls.)