IMPROVE- MENTS IN RADIAL AND OTHER DRILLING MACHINES
Year: 1869

page_text: LETTERS PATENT to George Arthur Crow, of the Town and County,
of Newcastle-upon-Tyne, Engineer, for the Invention of "IMPROVE-
MENTS IN RADIAL AND OTHER DRILLING MACHINES."
Sealed the 25th June 1869, and dated the 20th January 1869.
PROVISIONAL SPECIFICATION left by the said George Arthur Orow,
at the Office of the Commissioners of Patents, with his Petition,
on the 20th January 1869.
I, GEORGE ARTHUR CROW, of the Town and County of Newcastle-
upon-Tyne, Engineer, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN RADIAL AND OTHER DRILLING MACHINES," to be as
follows:-
My improvements consist in a combination of moveable tables
whereby the work to be drilled after being fixed can be turned round or
placed either horizontal, vertical, or at any angle, thereby reducing the
time and labour of adjusting such work.
i

page_text: The first part of my improvement consists of a hinged or jointed table
which is made to move to and from the horizontal or vertical line either
by a screw or other mechanical appliance.
The second part of my improvement consists in the application of a
table to 'this hinged or jointed table with a bearing in or attached to it
'and constructed to make an entire or any part of a revolution as may be
required, and is moved to and from the vertical or horizontal line
together with the first-named table.
I propose that the table that is constructed to make an entire or any
part of a revolution should be made of a square or rectangular form so
that the work can be fixed either on the top, on the sides, or on the end
as may be required, and the table worked round either by hand or with
a screw and.worm wheel or other mechanical contrivance.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Arthur Crow in the Great Seal Patent
Office on the 10th July 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
ARTHUR CROW, of the Town and County of Newcastle-upon-Tyne,
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters l'atent, bearing date the Twentieth day of January, in the year
of our Lord One thousand eight hundred and sixty-nine, in the
thirty-second year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said George Arthur Crow, Her
special licence that 1, the said George Arthur Crow, my executors,
administrators, and assigns, or such others as 1, the said George Arthur
Crow, 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 Invention, for
"IMPROVEMENTS IN RADIAL AND OTHER DRILLING MACHINES," upon the condition
(amongst others) that 1, the said George Arthur Crow, my executors or
administrators, by an instrument in writing under or their, or one of
their hands and seals, should particularly describe and ascertain the nature

page_text: 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 1, the said George Arthur Crow, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the accompanying
Drawings, and to the letters and figures marked thereon, that is to
say:
My said Invention consists of a combination of moveable tables
whereby the work to be drilled after being fixed can be turned round or
placed either horizontally, vertically, or at any angle, thereby reducing
the time and labour of adjusting such work.
The first part of my improvements consists of a hinged or jointed
table which is made to move to and from the horizontal or vertical line
either by a screw or other mechanical appliance.
The second part of my improvements consists in the application of a
table to this hinged or jointed table with a beating in or attached to it
and constructed so as to make an entire or any part of a revolution as
may be required, and is moved to and from the vertical or horizontal line
together with the first-named table.
1 further propose that the table which is constructed to make an
entire or any part of a revolution should be made of a square or angular
form, so that the work can be fixed either on the top, on the sides, or on
the end thereof as may be required, and the table worked round either
by hand or by a serew and worm wheel, or by any other suitable
mechanical contrivance.
And in order that the said Invention may be fully understood I shall
now proceed more particularly to describe the same, and for that
purpose shall refer to the several Figures on the annexed Sheets of
Drawings, the same letters of reference indicating corresponding parts
in all the corresponding Figures.
'Sheet 1 of my Drawings shews arrangements of a combination of
moveable tables applied to a radial drilling machine. After the work is
placed in the desired position on the moveable table the drill can be
brought to operate upon it in any position by means of the ordinary
radial arm and traversing head.

page_text: Figure 1 on Sheet 2 of my Drawings is a side elevation of a portion
of a radial drilling machine with my improved combined tables attached
thereto; Figure 2 is a corresponding plan of the tables; Figure 3 is a
side elevation shewing the tables in different positions; Figures 6 and 7
represent respectively an enlarged detail plan of the under side of the
combined tables and a vertical section of the same.
A is a moveable table working on the bearings or trunnions B. To
this table is attached a screw spindle O (Figures 1, 2, and 3) working
through a nut D which is free to swivel in a fixed bracket, as shewn in
Figures 1 and 2. This nut is turned by the hand wheel E, thus causing
the table A to move to and from the vertical and horizontal line upon
its bearing trunnions or journals B, B. On the table A is a tubular
bearing F in which a second and angular table G (Figures 6 and 7) is
made to turn to any required position by means of the worm H working
into the worm wheel I which is fixed on a part of the spindle J that
forms the bearing of the angular table G.
In Figure 4, which is a front elevation, and in Figure 5, which is a
side elevation of a portion of a radial drilling machine with my improved
tables attached, the arrangement is similar to that shewn in Figures 1, 2,
and 3, with the exception of the table A, which is moved by a worm K
working into a worm wheel L fixed on one end of the bearing or
trunnion B. By this arrangement both tables can be turned completely
round on their own bearings, thus giving a greater range than will ever
be practically required.
Figures 8 and 9 shew another form of angular moveable table G with
only two parts or faces M and N for fixing the work upon. The angular
moveable tables containing two or more surfaces may be used either
separately or in combination with a hinged or jointed table.
Sheet 2 of my Drawings shews an arrangement of a combination of
moveable tables for a larger class of work than that shewn in Sheet 1.
In this case an ordinary or traversing head drill is applied so that the
drill may be made to move to and operate on any desired part after the
work is fixed on the moveable table.
Figure 1 on Sheet 2 of my Drawings is a side elevation of a portion
of an ordinary traversing head drilling machine with a modification of
my improved tables attached thereto; Figure 2 is a corresponding end
elevation; and Figure 3 a corresponding plan of the same.
A is a moveable table working in the bearings B.
To this table is

page_text: fitted a toothed segment E; the worm F working into this segment is
turned at will by the spindle I through the bevel wheels J, thus causing
the table to make part of a revolution in the direction of the length
of the machine; O is a second moveable table working in the bearings
D), these bearings being fixed to the table A; on the outer end of one
of the bearings D is fixed a toothed segment G; the worm H working
into this segment is turned at will by the spindle K, thus causing the
table C to make a partial revolution transversely to the machine.
Although I have described and illustrated certain mechanical
appliances for moving or adjusting these tables, 1 do not confine myself
to or claim any particular mechanical arrangement for this purpose as
it is obvious that various contrivances might be adopted.
Having now described and particularly ascertained the nature of my
said Invention, and the manner in which the same is or may be used or
carried into effect, I would observe in conclusion that what I consider
to be novel and original, and therefore claim as the Invention secured
to me by the herein-before in part recited Letters Patent is,―
First. The combination of two moveable tables' in radial and other
drilling machines whereby the table on which the work to be drilled is
fixed can be placed in any desired position, facility being thus afforded
for drilling or boring.holes in the work after it is fixed parallel or at any
angle to each other without altering the relative position of the work
and the table on which it is fixed.
Second. The angular form of moveable table on which the work to
be drilled is fixed so that the work can be fixed on two or more parts or
faces of the table as herein-before described.
Third. The application and use of the peculiar form of angular moveable
table G above referred to, whether it be applied separately or in
combination with any other table of a drilling machine.
In witness whereof, I, the said George Arthur Crow, have to
this my Specification set my hand and seal, the Nineteenth day
of July One thousand eight hundred and sixty-nine.
GEO. A. CROW. (L.S.)