IMPROVEMENTS IN RADIAL DRILLING MACHINES
Year: 1877

page_text: LETTERS PATENT to William Asquith, of Halifax, in the County of York,
Machine Tool Maker, for the Invention of "IMPROVEMENTS IN RADIAL
DRILLING MACHINES."
Sealed the 10th August 1877, and dated the 23rd May 1877.
PROVISIONAL SPECIFICATION left by the said William Asquith at the
Office of the Commissioners of Patents on the 23rd May 1877.
"
WILLIAM ASQUITH, of Halifax, in the County of York, Machine Tool Maker.
IMPROVEMENTS IN RADIAL DRILLING MACHINES."
:
This Invention relates to machines for boring or drilling metals, known as radial
drills, and the object is to provide (by mechanism herein-after described) a ready
means of moving and setting the radial arm so as to ensure accurate and ready
Cadjustment of the drill to the point or part of the metal to be operated upon.
:
For purpose aforesaid I employ a shaft and worm; the shaft works in bearings:
attached to the slide carrying the drill spindle. On the shaft is a hand wheel, con-
venient to the workman attending the drill, the worm gears with a worm wheel on
a horizontal shaft, mounted above and carried by a bracket connected with the
radial arm and by the traversing slide of the drill. On the inner end of this shaft
is a bevel pinion wheel gearing with a bevel wheel fixed to the bearing of the slide
carrying the radial arm.
As motion is imparted to the worm shaft to the right or to the left, so will the
pinion turn to the right or to the left upon the bevel wheel referred to, whereby the
radial arm and drill are radused, or turned to the right or to the left, and set with
facility and accuracy of adjustment. When desirable to swing the radial arm clear
of the work, or to move the arm clear, a considerable portion of the circle, the worm
wheel is, by means of a hand lever, slid upon its shaft out of. gear with the
worm, whereon the radial arm may be pushed or swung round by hand as
heretofore.
'
:

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Asquith in the Great Seal Patent Office on the 23rd November
1877.
WILLIAM ASQUITH, of Halifax, in the County of York, Machine Tool Maker.
"IMPROVEMENTS IN RADIAL DRILLING MACHINES."
This Invention relates to machines for boring or drilling metals, known as radial
drills, and the object is to provide (by mechanism herein-after described), a ready
means of moving and setting the radial arm so as to ensure accurate and ready
adjustment of the drill to the point or part of the metal to be operated upon.
For purpose. aforesaid I employ a shaft and worm; the shaft works in bearings
attached to the slide carrying the drill spindle. On the shaft is a hand wheel, con-
venient to the workman attending the drill. The worm gears with a worm wheel
on a horizontal shaft mounted above and carried by brackets connected with the
radial arm and by the traversing slide of the drill. On the inner end of this shaft
is a bevel pinion wheel gearing with a bevel wheel fixed to the bearing of the slide
carrying the radial arm.
As motion is imparted to the worm shaft to the right or to the left, so will the
pinion turn to the right or to the left upon the bevel wheel referred to, whereby the
radial arm and drill are radused, or turned to the right or to the left, and set with
facility and accuracy of adjustment. When desirable to swing the radial arm
clear of the work, or to move the arm a considerable portion of the circle, the
worm wheel is, by means of a hand lever, moved upon its shaft out of gear with
the worm, whereon the radial arm may be pushed or swung round by hand as
heretofore.
Such being the nature and object of this said Invention, I will now proceed to
describe the same in detail, and in order that the Invention may be clearly under-
stood I have hereunto annexed two Sheets of Drawings illustrative thereof, and
have marked the same with figures and letters of reference, the same letter referring
to and indicating the same part in the several views of Figures.
Figure 1 is a front elevation of part of a radial drilling machine having my
improvements applied thereto; Figure 2 is an end elevation of the same, partly in
section.
A is a shaft on which is the worm B, the shaft is carried by boss bearings C, C,
attached to the traversing slide E, carrying the drill spindle F; G is a hand wheel
for operating the shaft A. The worm B gears with the worm wheel B¹ on the
shaft H, the latter being carried by brackets J, J, branching from the radial arın K
and the traversing slide E; L is a bevel pinion on the shaft H, gearing with the
bevel wheel M fixed to the bearing N of the slide carrying the radial arm K. As
motion is imparted to the worm shaft A, to the right hand or to the left hand, so
will the pinion Ļ turn and move to the right or to the left upon the bevel wheel M,
whereby the radial arın K and drill F are turned to the right or to the left and
set with facility and accuracy of adjustment. P, P, are levers for moving the
wheel B out of gear with worm B on the shaft H, so as to admit of the radial arm K
and drill F being swung or noved quickly a considerable portion of a circle.
-
Having thus fully described and ascertained the nature and particulars of this.
my said Invention, together with the manner in which the same is to be or may be
performed, I would have it understood that in order to fully describe and illustrate
the application of this my Invention I have of necessity referred to many of the
well-known parts of a radial drilling machine; and further, I do not claim to any
separate part referred to, but I limit and confine my Invention to,―
Firstly. The combination and use in combination of the worm B, worm wheel B¹,
pinion L, and wheel M, as and for the purpose herein described and illustrated.
'

page_text: Secondly. I claim the levers P, P, for operating the worm wheel B' in combina:
tion with the worm B, wheel B¹, pinion L, and wheel M.
In witness whereof, I, the said William Asquith, have hereunto set my hand
and seal, this Twentieth day of November, in the year of our Lord One
thousand eight hundred and seventy-seven.
Witness,
WALTER BRIERLEY,
Patent Agent,
Halifax and Blackburn.
WILLIAM ASQUITH. (L.S.)