Year: 1888

page_text: We, JAMES BRADBURY, Senior and JAMES BRADBURY, Junior, both of Braintree in
the county of Essex, Cycle Manufacturers do hereby declare the nature of this inven-
tion to be as follows:-
Our invention relates to a portable drilling machine for drilling out broken spokes
or redrilling holes in the hubs of the wheels of Velocipedes.
The machine is constructed as follows:-Near to one end of a bar of a suitable
length are fixed two snugs having holes in which a light frame carrying the drill and
its operating mechanism is mounted so that it is free to slide up and down therein.
Immediately above the top snug a hand lever is pivotted, the free end of which
engages with the top of the drill frame and so provides a means of pressing the drill
down upon its work. On the lower end of the bar is a bracket in which is mounted,
so as to be capable of lateral adjustment by means of a milled nut or its equivalent, a
fork having a V shaped slot on its under side to fit over the edge of the hub, the fork
allowing the drill to pass down therethrough. On the upper part of the bar is mounted
so as to be capable of easy adjustment thereon, a bracket carrying a set-screw having
a coned end to adapt it to engage with the spoke bole in the rim of the wheel, thereby,
with the aid of the fork at the lower end of the rod enabling the machine to be fixed
in the wheel ready for drilling the required hole.
The drill is fixed to its spindle in the well-known manner and the spindle is also
actuated in the well-known manner by means of a hand wheel carrying a bevel wheel
engaging with a bevel pinion on the drill spindle.
Dated this 30th day of August 1888.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
Royal Courts Chambers,
70, Chancery Lane, London, W.C.,
Agent for the Applicants.

page_text: Improvements in and relating to Portable Drilling Machines.
We, JAMES BRADBURY, Senior, and JAMES BRADBURY, Junior, both of Braintree,
in the County of Essex, Cycle Manufacturers, do hereby declare the nature of this
invention, and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :-
Our invention relates to a portable drilling machine for drilling out broken spokes
or redrilling holes, in the hubs of the wheels of velocipedes."
The machine is constructed in the general manner illustrated in the accompanying
drawing, in which Figure 1. is a view in side elevation. Figure 2. a view in front
elevation, and Figure 3. a broken view in plan, of the machine, and Figure 4. is a
broken view in plan showing the lower adjustable guide rest for the drill. Throughout
the several views similar parts are marked with the like letters of reference. With
the aid of this drawing we will particularly describe the construction of our improved
drilling machine.
On to the end of a bar A of a suitable length-and preferably of a T section-is
fixed a circular bar A³ forming an extension thereof. On this bar is mounted a light
frame B, carrying the drill and its operating mechanism, and free to slide up and down
thereon. On a snug a formed on or fixed to, the end of the bar A is pivotted by the
pin aa hand lever one end of which is forked to encircle the bar A and is provided
with slots c. c. to receive pins bb screwed in the top of the drill frame B, and thus
provide a means of raising and lowering the drill on the bar. On the lower end of
the extension bar A¹ is a snug A2 in which is mounted, so as to be capable of lateral
adjustment a small fork D having a V-shaped slot d on its under side, to adapt it to
fit over the edge of the hub of the wheel, the fork allowing the drill X to pass down
therethrough. This fork D forms one of the guide rests for the drill, and its position
is adjusted laterally by means of a milled nut d', or its equivalent, threaded on the
sbank d² of the fork Ď and acting in a slot a² in the snug A². On the upper part of
the bar is mounted, so as to be capable of easy adjustment thereon by means of a set
screw e, a bracket E carrying a set-screw, or its equivalent, having a coned end to
adapt it to engage with the spoke hole in the rim of the wheel, thus forming the
other guide rest for the drill, and with the aid of the fork at the lower end of the
bar A enabling the drill to be fixed in the wheel between the hub and the rim
thereof, ready for drilling the required hole. Instead of using a simple set-screw in
the bracket El prefer to mount in the said bracket a L-piece E' capable of being
adjusted vertically with respect to the bracket E by the screw-nut e¹. The lateral
arm of this piece has a V-shaped slot e to engage with the rim of the wheel, and
a guide pine in the said slot to engage with the spoke hole in the said rim. By
this device the drill can be more firmly secured in the wheel. The twist or other
drill X is fixed to its spindle X¹ in any convenient and suitable manner, and the
spindle X is also actuated by means of a crank or hand wheel X³ carrying a bevel
wheel ongaging with a bevel pinion on the drill spindle X¹ as illustrated.

page_text: It will be seen that our improved drill is adapted to be easily and firmly fixed
in a cycle wheel so that the operation of drilling can be carried on much more con-
veniently and easily than with the ordinary breast brace, or fiddle drill.
We would have it understood that we do not limit ourselves to the exact details
of construction hereinabove set forth, but hold ourselves at liberty to make such
changes and alterations as fairly fall within the spirit and scope of our invention.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1st. A portable drilling machine constructed, arranged, and operating, as and for
the purpose set forth.
2nd. In a portable drilling machine, mounting the drill and its operating mechanism
on a bar capable of being fixed within the wheel of a velocipede, as and for the purpose
set forth.
3rd. In a portable drilling machine, the combination with the drill and its driving
and feed mechanism as hereinabove set forth, of the laterally adjustable fork D on the
lower end of the bar or frame carrying the drilling mechanism, and the bracket E
adapted to be longitudinally adjustable on the said bar, as and for the purpose
set forth.
4th. In a drilling machine, the combination with the drill and its spindle, of the
hand crank and driving gear, the hand lever feed gear, and the bar carrying the said
mechanism and adapted to be fixed within the wheel of a Velocipede, as and for the
purpose set forth.
Data: 20th Lan of Narambar 1888