IMPROVEMENTS IN RADIAL DRILLING MACHINES
Year: 1879

page_text: LETTERS PATENT to Henry Simon, of Number 7, St. Peter's Square, Manchester,
in the County of Lancastor, for the Invention of "IMPROVEMENTS IN RADIAL
DRILLING MACHINES." A communication from abroad by Paul Theodor
Joseph Langbein, of Würzberg, in the Empire of Germany, Engineer.
PROVISIONAL SPECIFICATION left by the said Henry Simon at the Office
of the Commissioners of Patents on the 4th October 1879.
HENRY SIMON, of Number 7, St. Peter's Square, Manchester, in the County of
Lancaster. "IMPROVEMENTS IN RADIAL DRILLING MACHINES." A communication
from abroad by Paul Theodor Joseph Langbein, of Würzberg, in the Empire of
Germany, Engineer.
The Invention relates to improvements in radial drilling machines employed in
the drilling of holes in metal for various uses, and consists, in the first place, of
improvements in the manner of swinging the arm of the drill around its fulcrum
so as to obtain a better action of the arm when operating with the machine. The
said arm is formed in two portions or parts, each of any suitable length. The frame
of the first part swivels on and around the pedestal of the foundation bracket
which carries a spindle or vertical shaft on which is fixed two pulleys. The
Becond part of the arm is caused to swivel around the said pulley, spindle, or vertical
shaft, and carries the drill spindle and tool. The raising and lowering of the drill
spindle and tool in a vertical direction is obtained by the ordinary arrangement of
gearing employed for this purpose. The said arm has a free action around each
centre of movement, and enables the operator to bring the drill-tool to act on the
work under operation in a better manner than formerly. The revolution of the
drill-spindle is not interfered with when moving the radial arm around its centre.
The drill spindle is revolved by means of straps and pulleys, but may be revolved
by means of an endless wire-rope. Motion is transmitted from the engine to a
shaft forined in the foundation standard, which said shaft transmits motion to a
second shaft carried by the arm of the machine; from this last named shaft motion
is transmitted in the herein indicated manner to the drill spindle. The said drilling
71

page_text: machine may be fiexd to a wall-plate or foundation bracket or fixture, so arranged
as that the pedestal of the machine is formed to carry the arm constructed as
herein before described. The said pedestal carrying the double hinged arm may be
bolted to or fixed on a portable or travelling carriage, and moving on wheels so as
to allow of its being moved from place to place when desired. When it is required 5
to change the drill-tool a suitably formed forked lever is passed around the boss
which holds the drill tool in position and effects the raising or lifting of a sliding
or loose bush. The said bush is lifted to a suitable extent and will admit of its
being cleared from the said boss, whereby the said boss remains fixed and does not
interfere with the revolution of the drill spindle. The said boss is preferably made 1
of a hexagonal form. The said bush is made to act as a coupling, as will be readily
understood.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Simon in the Great Seal Patent Office on the 20th March
1880.
HENRY SIMON, of Number 7, St. Peter's Square, Manchester, in the County of
Lancaster. "IMPROVEMENTS IN RADIAL DRILLING MACHINES." A communication
from abroad by Paul Theodor Joseph Langbein, of Würzburg, in the Empire of
Germany, Engineer.
The Invention relates to improvements in radial-drilling machines employed in
the drilling of circular holes in metal, as is well understood. The Invention consists,
in the first place, in the employment of a novel arrangement and method of
hingeing the radial-arm of the machine in two or more parts or castings in order
to allow by the hereinafter indicated means of the said arm and connected drill
tool or cutter being moved in a circular and horizontal line around or nearly
around its centre or centres of support, thus having a greater range of action for
the cutter, and being brought to act on the work under operation in a better
manner than heretofore. The said radial-arm is preferably hinged or jointed in
two parts, but any suitable number of parts may be employed if desired or found
to be suitable. The frame constituting the first part of the arm is formed and
arranged to turn or swivel around a vertical and stationary support, which said
support is fixed in bearings partly formed with the machine standard. The frame
constituting the second and outer part of the arm is formed and arranged to tura
or swivel around a vertical support carried by the first part of the arm hereinbefore
mentioned. Within the supports around which the frames of the arm swivels
vertical spindles are caused to revolve by means of suitable gearing, in order to
transmit the necessary revolving notion to the drill spindle and cutter. The
raising and lowering of the cutter from and to the work under operation may be
effected by any ordinary and suitable arrangement of gearing. Each frame of the
arm has a free action around the vertical spindles hereinbefore mentioned. The
drilling machine formed as herein mentioned may be bolted to a wall plate, or may
be carried on a portable or travelling carriage to be moved about on rails. The
Invention relates, in the second place, to means for effecting the removal of the drill
or cutter without having to stop or retard the revolution of the drill-spindle. To
effect this removal of the cutter in order to place another and fresh cutter in
position a suitably formed forked lever is caused to embrace the tool-holder and
effect the raising of a sliding bush. The said bush is lifted to clear the boss of the
said holder, the upper part of which is proferably of a hexagonal form. The
remaining part of the Invention relates to the employment of an endless wire rope
to actuate one or more drilling machines.
And in order that the Invention may be more fully understood I have caused to
> be appended hereunto two Sheets of Drawings marked with letters of referenco,
corresponding marks indicating the same parts in the various Figures. Referring
in this place to the said Drawings, Fig. 1, Sheet 1, indicates the manner of
mounting the machine on a travelling carriage a, and also the grooved driving
pulleys b, b', under and over (which the endless wire rope c is passed in order to
communicate the necessary motion to the drill spindle a through the indicated
gearing; Fig. 2 is an end view, and Fig. 3 a plan, and indicates the arrangement
for mounting two drilling machines on one frame or traversing carriage a, being
particularly adapted for operating with the drilling machine or machines on com-
paratively large pieces of work, as, for example, bridge-girders. When the carriage
or frame a is traversed along the rails finto the desired position it is for a time
permanently fixed thereon, and while the machine may be in action by means of
the clamp g or of clamps which is or are caused to grip the rail or rails f, and
thereby prevent the carriage from moving on the rails f. When required to move
the carriage along the rails f the clamp g is released from the rail by means of a
band-lever and screw acting in any ordinary manner. Fig. 4 on the same Sheet

page_text: indicates an arrangement for carrying the said endless wire rope over pulleys h, h.
The said wire rope may be caused to actuate inore than one machine if desired.
The pulleys h, h, may receive a rotatory motion from any suitable driving motor.
Figs. 1, 2, 3, and 4, Sheet 2, represents the form and construction of the radial arm
of the drilling machine. In Fig. 3 the arm is cast or formed in two parts i, i; the
part is caused to turn or swivel around the vertical spindle j and within
bearings, formed with the machine standard k. The outer part turns around
tho vertical spindle l, and is supported by the first arm. The shaft m receives
motion from a suitable motor, and transmits motion to the vertical spindle j by
means of the mitre-wheels n and pulley o. The support p of the first part of the
arm swivels around the spindle and admits of the arm being moved almost
entirely around the same, as indicated by the dotted lines in Fig. 4. The outer
part of the arm i' swivels around or nearly around the vertical spindle l, and is
carried in supports q formed with the first hinged arm i. The arms i, i¹, may be
slotted in order to obtain lightness with stability, and to render the same orna-
mental in appearance. On the upper end of the spindle j is fixed a pulley o which
transmits motion to the pulleys o¹ and o' by means of the strap r. The pulley o
transmits motion to the pulley o by means of the strap or band ¹, which said
pulley os effects the revolution of the drill spindle 8, on the lower part of which,
and above the drill cutter, it may be fixed. The drill-tool or cutter t can, by means
of the herein before indicated arrangement of forming and hingeing the drill-arm, be
brought to act upon the work under operation at a comparatively great range and
without having to unfix the work as heretofore. Fig. 5 represents a form of forked
lever suitable to be employed when effecting the removal of the drill or cutter t. The
lever u is caused to embrace the boss of the tool-holder and around the bush,
which causes the holder to revolve with the spindle. The said bush is lifted to
clear the holder which is fixed, and does not interfere with the revolution of the
spindles. The said bush is preferably made of a hexagonal form, as shewn by
Fig. 6. Any ordinary and suitable arrangement of gearing may be employed for
effecting the lowering and raising of the cutter to and from the work in a vertical;
direction.
Having now described and indicated the nature of the Invention, and means for
carrying the saine into practical effect, I would have it to be distinctly understood
that I claim,-
First. The manner of forming the radial arm arranged to be hinged in two or
more parts, and acting in the manner hereinbefore described, and as illustrated by
Figs. 1, 2, and 3, Sheet 2, of the accompanying Drawings.
Secondly. The appliances and means for effecting the changing of the drill-tool
or cutter without having to retard or stop the revolution of the drill-spindle,
substantially in the manner herein before indicated.
Thirdly. The employment of a travelling frame or carriage on which one or
more machines are fixed in order to admit of a great range of action for operating
with the machine, substantially as described and illustrated.
And, Lastly. The employment of an endless wire rope in order to actuate the
machine or machines whilst permitting the same to be moved from place to place,
substantially as described and illustrated.
In witness whereof, I, the said Henry Simon, have hereunto set my hand
and seal, this Third day of March, in the year of our Lord One thousand
aight hundred and eighty
HENRY SIMON. (L.S.)