IMPROVEMENTS IN THE CONSTRUCTION OF RADIAL DRILLS, WHICH IMPROVE. ARE ALSO APPLICABLE TO OTHER SIMILAR PURPOSES
Year: 1875

page_text: LETTERS PATENT to Thomas William Beverley, of Sheffield, in the
County of York, Machinist & Tool Maker, for the Invention of
"IMPROVEMENTS IN THE CONSTRUCTION OF RADIAL DRILLS, WHICH IMPROVE.
PROVISIONAL SPECIFICATION left by the said Thomas William
Beverley at the Office of the Commissioners of Patents, with his
Petition, on the 25th October 1875.
I, THOMAS WIlliam Beverley, of Sheffield, in the County of York,
Machinist & Tool Maker, do hereby declare the nature of my said
Invention for "IMPROVEMENTS IN THE CONSTRUCTION OF RADIAL DRILLS, WHICH
IMPROVEMENTS ARE ALSO APPLICABLE TO OTHER SIMILAR PURPOSES," to be as
follows:-
My Invention relates more particularly to the method of constructing
the arms of radial drills, but it is also applicable to the standards or

page_text: upright slides of boring machines, and the girders or cross slides of
planing machines and other similar purposes, and it consists essentially
in constructing such arms or slides of two or more rods or bars, either
hollow or solid, and of a round, square, triangular, or other suitable
section, and in arranging them so that they shall be supported by and
slide in corresponding holes or bearings formed in suitable parts of the
machines, which arrangement enables machines of this description to be
more economically produced than when the ordinary flat or V shaped
sliding surfaces are employed.
In carrying out my Invention as applied to a radial drill (for example)
I construct the arm of the drill by preference of three round hollow bars
parallel to each other, and forming in cross section the points of a
triangle. The bars are secured at one end by the spindle head, and at
the other by a suitable end plate, and they slide through corresponding
holes formed in a supporting head; or in lieu thereof they may be 1
secured to the supporting head, the spindle head in that case sliding
on the bars.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas William Beverley in the Great Seal
Patent Office on the 19th April 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
WILLIAM BEVERLEY, of Sheffield, in the County of York, Machinist and
Tool Maker, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fifth day of October, in the
year of our Lord One thousand eight hundred and seventy-five, in
the 39th year of Her reign, did, for Herself, Her heirs and succes-
sors, give and grant unto me, the said Thomas William Beverley,
Her special license that I, the said Thomas William Beverley, my
executors, administrators, and assigns, or such others as I, the said
Thomas William Beverley, my executors, administrators, or assigns,
should at any time agree with, and no others, from time to time

page_text: 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 THE CONSTRUCTION OF RADIAL
DRILLS, WHICH IMPROVEMENTS ARE ALSO APPLICABLE TO OTHER SIMILAR PURPOSES,"
upon the condition (amongst others) that I, the said Thomas William
Beverley, my executors or administrators, by an instrument in writing
under my hand and seal, 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 Thomas William Beverley, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascer-
tained 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 relates more particularly to the method of con-
structing the arms of radial drilling machines, but it is also applicable
to the standards or upright slides of boring machines, and the girders
or cross slides of planing machines and other similar purposes, and it
consists essentially in constructing such arms or slides of two or more
rods or bars, either solid or hollow, and of a round, square, triangular,
or other suitable section, and in arranging them either so that they shall
be supported by and slide in corresponding holes formed in suitable
parts of the machines, or vice versa, which arrangements enable machines
of this description to be more economically produced than when the
ordinary flat or V shaped sliding surfaces are employed.
And in order that my 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 Sheet of
Drawings, the same letters of reference indicating corresponding parts
in all the Figures.
Figure 1 of my Drawings represents a side elevation of a portion of a
radial drilling machine with my Invention applied thereto according to

page_text: one mode of carrying out the same, and Figure 2 is a transverse section
taken along the line 1-2, Figure 1.
Figure 3 is a similar view to Figure 1 illustrating a modification
of that arrangement, and Figure 4 is a transverse section taken along
the line 3-4, Figure 3.
Referring to Figures 1 and 2 of the Drawings the arm of the machine
is constructed of three round hollow bars a, b, c, parallel to each other,
and forming in cross section the points of a triangle. The bars are
secured at one end by the spindle head d which carries the tool, and
at the other end by an end plate e, and they are capable of sliding
through corresponding holes formed in a supporting head f, the latter
being carried by a column 9 constituting a pivot upon which the
apparatus may turn. Or in lieu of the preceding arrangement the
modification shown in Figures 3 and 4 may be adopted, in which
the bars a, b, c, are secured to the supporting head f, the spindle
head d in that case sliding on the bars.
When the Invention is to be applied to the standards or upright
slides of boring machines, and the girders or cross slides of planing
machines, and other similar purposes, such modifications will have to be
mado as the particular description of apparatus to which it is to be
adapted may render necessary, the mode of carrying out which modifi-
cations will be readily understood by competent persons from the
description herein-before given of the application of the Invention to a
radial drilling machine without the necessity for further details.
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,―
1
First. The system or mode of constructing sliding surfaces by the
employment of two or more rods or bars fitting in holes of a corre-
sponding section, substantially as and for the purposes herein-before
described.
Secondly. Constructing the arms of radial drilling machines of rods

page_text: sponding to that of the rods or bars, substantially as and for the
purpose herein-before described, and as illustrated by my Drawings.
In witness whereof, I, the said Thomas William Beverley, have
to this my Specification set my hand and scal, this Thirty-first
day of March One thousand eight hundred and seventy-six.
THOMAS WILLIAM BEVERLEY. (L.S.)