Improvements in Drilling Machines
Year: 1895

page_text: Date of Application, 3rd May, 1895
Complete Specification Left, 3rd Feb, 1896-Accepted, 28th Mar, 1896
Improvements in Drilling Machines
I, JAMES GLOVFR of Hyndburn Works, Accrington, in the County of Lancaster,
Machinist, do hereby dechre the nature of this invention to be as follows
and
This invention relates to certain improvements in drilling machines, more
particularly respecting firstly, an improved self-fecd for such machines,
secondly, improved means foi driving the dull at quick and medium speeds
respectively, and in the same direction as the turn of the driving wheel or
right hand
With regard to the first part of these improvements, my object has been chiefly
to provide a self-feed that would be regular and uniform in its action and to avoid
breakage of the working parts by any sudden movement of the feed mechanism
The drill shift is a screw one, capable of rising and falling vertically in the
machine frame by the motion of a wheel (mounted on the sud shaft, and tapped
in the centre), the wheel being prevented from participating in the vertical
movement of the drill shift This wheel I preferably form with rounded teeth
The self feed consists of a cylindrical box or casing, bolted or fastened to the
top of the machine, and having an opening opposite the said wheel, mounted on
the dull shaft, which I will term the drill-wheel A cylindrical block formed with
a hand wheel or disc fills the said cylindrical casing, and carries an eccentrically
Part of the
disposed shaft, which fits into the casing, and is keyed to the block
cylindrical block, like the casing is cut way, so as to receive a worm, which is
mounted on the eccentric shaft Owing to the eccentricity of the shaft, when the
hand-wheel is turned at the will of the person in charge, the worm will at one
part of its revolution projec through the opening in the said casing, so as to
engage with the teeth of the drill wheel, whilst at another part of its revolution, it
will be disengaged from the drill-wliecl Near the hand-wheel on the cylindrical
block is also a disc, living two notches or recuses on its circumference, so that a
pin or finger on the casing, my be allowed to fill into cither one or other of the
notches to retain the block in position when the feed is either operative or
inoperative
On the eccentrically disposed shaft of the feed is pair of fast and slow pulleys,
which when the hand wheel his been turned, so as to engage the worm with the
teeth of the drill wheel, may be diven by a small belt from the driving shaft of
the machine When the hind wheel has been turned to stop the machine, the
eccentricity of the shaft slickens the belt, which then runs futilely over the said
pulleys
The next part of my invention as before stated relates to an improved means of
driving the drill shaft it a quick or slow 1 ite of speed, and in the same direction
or right hand as the main driving wheel is turned, instead of left hand, as is usual
in such machines now in use
For this pui pose I drive a supplementary shaft by bevel gear This supplementary
shaft is parallel to the drill shaft, and is provided top and bottom with driving or
gear wheels, which through the medium of intermediate wheels or pinions transmits
motion to the drill shift, which is also provided with driving wheels at the top and

page_text: bottom The top gear is for giving a slow movement to the drill shaft, whilst the
bottom gear is for giving increased speed, or vice versi
The intermediate wheels or pinion are mounted on sliding shafts, which slide in
holes in the frame, and one of them is always slided out of gear, when the other is
in gear
In this way the drill may be readily driven it quick or slow rate
of speed
Dated this 2nd day of May 1905
Drilling machines
I, JAMES GLOVFR of Hyndburn Works, Accrington, in the County of Lancaster,
Machinist, do hereby declare the nature of thus invention, and in what manner the
same is to be performed to be particularly described and ascertuned in and by the
following statement
ind
This invention relates to certun improvements in drilling machines, more
particularly respecting, firstly, an improved self-feed for such machines,
secondly, improved means for driving the drill at quick and medium speeds
respectively, and in the same direction as the turn of the driving wheel, or right
hand
With regard to the first part of these improvements my object has been chiefly
to provide a self-feed that would be regular and uniform in its action, and avoid
breakage of the working parts by any sudden movement in the feed mechanism
The drill shaft is a screw one, capable of sing and falling vertically in the
machine frame by the motion of wheel (mounted on the said shaft, and tapped in
the centre) the wheel being prevented from participating in the vertical movement
of the drill shaft This wheel I prefer ably form with rounded teeth
The self-feed consists of a cylindrical box or casing bolted or fastened to the top
of the machine, and having an opening opposite the sud wheel, mounted on the
drill shaft, which I will term the drill wheel A cylindrical block formed with a
hand-wheel or disc fills the said cylindrical casing, and carries an eccentrically
dispo ed shaft, which fits into the casing
Part of the cylindrical bloch, like the ca ing, is cut away so is to receive a worm,
which is mounted on the eccentric shaft
when the hand-wheel 1 turned at the will of the person in charge, the worm will
Owing to the eccentricity of the shaft,
project through the opening in the said casing, so as to engage with the teeth of
the drill wheel, or as required be disengaged from the drill wheel Near the hand
wheel on the cylindrical block is also a disc, having two notches or recesses on its
circumference so that pin or finger on the cising my be allowed to fill into
either one on other of the notches to retain the block in position when the feed is
either operative or inoperative, as orcsud
On the eccentrically disposed shaft of the feed spur of fast and slow pulleys,
which when the hand wheel has been turned, so as to engage the worm with the
teeth of the drill wheel, may be driven by a small belt from the driving shatt of
the machine
When the hand wheel has been turned to stop the machine the eccentricity of
the shift slackens the belt, which then runs futilely over the said pulleys
The next part of my invention as before stated relates to an improved means of
driving the drill shift it quick or low rate of speed, and in the same direction
oright hand as the mun diving wheel is turned instead of left hand, as is usual
in such machines now in use

page_text: For this purpose, I drive a supplementary shaft by bevel gear This supplementary
shaft is parallel to the drill shaft, and is provided top and bottom with driving or
gear wheels, which through the medium of intermediate wheels or pinions transmits
motion to the drill shaft, which is also provided with driving wheels at the top and
bottom The top gear 1 for giving a slow movement to the drill shaft, whilst the
bottom gear is for giving increased speed or vice versa
The intermediate wheels or pinions are mounted on sliding shafts, which slide in
holes in the frame, and one of them is always slided out of gear, when the other
In this way the drill may be readily driven at i
Is in gear
of speed
In the accompanying drawings,
quich or slow rate
Fig 11s side elevation, and Fig 2 is a front elevation of a hand drill constructed
in accordance with my invention, which is of course equally applicable to drills
driven by power
Figs 3 and 4 are plan and end elevation respectively of the self feed mech inisi
Referring to Figs 1 and 2, A is the drill wheel which raises and lowers drill
shaft B which is a screw one, but the screw does not rotate with the drill spindle
but only rises and falls with it, in a manner common to this class of drill
Within
The self feed as seen detached in Fig 3 and 4 consists of cylindrical casing C
having bed D, by which it is attached to the drill frame It is also formed with an
opening to permit of worm G being engaged with teeth of drill wheel A
the interior of this cylindrical casing is cylindrical block E¹ (see Fig 4) carrying
hand-wheel F, by which it is capable of being turned round in either direction it
the will of the person in charge of the machine Part of the cylindrical block 1s
cut away, so as to receive worm G, which is designed that by turning hand wheel F
in one direction its teeth will engage with the teeth of the drill wheel A, (see Figs 1
and 2), whilst if turned in the other direction it will be inoperative, or disengaged
from said drill wheel A
This is effected by an ingenious arrangement of mechanism about to be described
Cylindrical block E is bored with a hole out of centre so as to receive shaft H
Shaft H is therefore pissed through this hole in cylindrical block E' and through
worm G, which is in the said recess or opening in cylindrical block, in such a manner
that it will pass exactly through the centre of worm G, but will be eccentrically
disposed with cylindrical block E¹
It will be evident therefore that on turning the hand wheel F in one or other
direction, the eccentricity of shaft H with cylindrical block E' will render worm G
either operative or inoperative with drill wheel A
To maintain cylindrical block E', and consequently worm G in position in one or
other of their extreme positions, I form on cylindrical casing Ci ridge with two
notches K, into one or other of which catch or finger L pivoted to flange M²
(seen in Fig 3) of cylindrical block E' is caused to engage by the person in charge
of the machine
As seen in Figs 2 and 3, the eccentrically disposed shaft H is driven from
grooved pulleys M₁ by belt M and it will be seen that the belt is slackened when
the worm is turned out of gear with the drill wheel
I will now proceed to describe my improved arrangement of mechanism for
driving the drill at quick and medium speeds respectively, and in the same direction
as the turn of the driv ng wheel or right hand This will be thoroughly under-
stood by reference to Figs 1 and 2
Parallel with the drill shaft B is mounted supplementary shaft N, which is driven
by bevel gear O
At the top and bottom of shaft N are wheels P and Q Mounted
on sliding shafts R S are intermediate ge wheels T U, and just as one or other
of the shafts RS are slided so as to bring one or other of intermediate gear wheels
in or out of action, am I enabled to run at quick or medium speeds, such
intermediate gear wheels of course engaging with either of gear wheels V W on
the drill shaft B The intermediate shafts R S are slotted and held in position
by bolts and nuts X

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is
-
1 The improved arrangement and combination of self feed for drilling machines,
and means for driving the drill at quick and medium speeds respectively,
substantially as described and illustrated
2 The improved sulf feed for drilling machines, substantially as described and
illustrated
3 The improved means of driving the drill shaft at quich and medium speeds
respectively, substantially as described and illustrated in Fig 1
Dated this 31st day of January 1896
F RICHMOND,
12, Standish Street Burnley, Agent for the Applicant