Hand Drilling Machine for Drilling Broken Spokes out of Cycle Wheel Hubs and for like purposes.
Year: 1892

page_text: Date of Application, 27th Jan., 1892
Complete Specification Left, 27th Oct., 1892-Accepted, 3rd Dec., 189?
PROVISIONAL SPECIFICATION.
Hand Drilling Machine for Drilling Broken Spokes out of Cycle
Wheel Hubs and for like purposes.
1, WILLIAM MITCHELL CUNNINGHAM of 4 Moor Lane, Clitheroe in the
County of Lancaster,. Cycle Agent, do hereby declare the nature of this invention
to be as follows:-
My said invention has for its object the construction of a convenient and effective
hand drilling machine for drilling out the ends of broken spokes from the hub of a
cycle or other light wheel or for drilling holes in such hubs and one of its chief
advantages is that the drilling of the hub shall be in a direct line with the spoke
hole in the rim whether such spoke hole be pierced in the centre of the rim or
otherwise the point of the drill being always in a direct line with the point or
centre of an adjustable pointer which is secured in the spoke hole in the rim.
In carrying my invention into practical effect I provide a steel or other metallic
spindle or rod of convenient length and bend the lower portion first at right angles
and then downwardly forming therein an elbow. Below the elbow I attach a boss
on which I mount or pivot a bevelled cogwheel furnished with a crank or handle for
turning same and I turn truly the lower extremity of the rod or spindle and furnish
it with a cone shaped point. Over this turned extremity and free to revolve upon
it I place a drill holder formed with a hollow socket at its upper end to fit and
revolve on the end of the spindle and carrying a bevelled cogged_shoulder or
wheel to engage with the larger cogwheel turned by handle as before described.
The lower extremity of this drill holder is sunk to carry the drill which is let in
and secured by a set screw or other device.
Parallel with the main spindle and at a short distance therefrom I secure by
plates or clamps at top and bottom a shorter rod or spindle terminating just above
the elbow of main spindle, and free to slide upon the two spindles which form
guides I mount a sliding block carrying a projecting arm which is hollowed or
V shaped to receive the rim of a wheel, holes in the block are arranged for the
spindles or guides to pass through. Below the block and round the main spindle
secure a strong spiral spring which is regulated by an adjustable collar on the
main spindle held in any required position by a set screw.
Below the hollowed arm or rim holder is a boss or projection and through this
and the arm is a threaded hole to receive a screwed bolt terminating in a hard point
which I call the pointer. When it is desired to use the drill the hollowed
projecting arm is placed under the rim and the collar supporting the spiral spring
is raised and fixed by set screw. The point of the drill is now lifted on to the
spot to be drilled in the hub and the spiral spring being under compression keeps
the hollowed arm at the rim and the point of the drill firmly in their places, the
pointer" is now screwed up until its point enters the spoke hole in the rim and
the drill holder having been already placed on end of spindle with the required
drill inserted the handle is now turned and the drill holder and drill revolved the
spring tending to keep the apparatus close up to the work.
A fixed handle may be provided opposite to cog wheel for the more firmly
olding of the apparatus.
Dated this 27th day of January 1892.
POPPLEWELL & Co.,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Hand Drilling Machine for Drilling Broken Spokes out of Cycle
Wheel Hubs and for like purposes.
I WILLIAM MITCHELL CUNNINGHAM. of 4 Moor Lane Clitheroe in the County
of Lancaster Cycle Agent 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:
The object of my invention is to provide a convenient portable hand drilling
machine particularly applicable for drilling out the ends of broken spokes of cycle
or like wheels of such a nature that the drilling of the hub shall operate in a
direct line centrally with the centre of the spoke hole in the rim whether such
hole be drilled or pierced in the centre of the rim or otherwise and my apparatus
is so constructed that the drilling point is automatically fed to the work when such
has been properly adjusted in first instance to the apparatus.
I am aware of like apparatus whereby similar results may be obtained but in
which the feed is effected by hand lever gear or the like and I do not desire to
claim other than my own method of drilling in direct line.
In describing my apparatus I shall refer to the accompanying drawing which
represents my apparatus fixed in position and ready for drilling a hole in the hub
of a cycle wheel of small diameter. The upper portion of the guide rods are
shown cut off for convenience in drawing.
In constructing my drilling apparatus I may provide a metallic spindle or rod of
convenient length and bend the lower portion first at right angles and then down-
wardly forming therein an elbow below which I attach a boss or instead of this I
may prefer to use a spindle or rod as shown on the drawing and marked A which
is not, bent but has attached to its lower end the boss B the said boss is at right
angles to the spindle and extends on one side thereof so as to carry the extremity
of the guide rod C and on the opposite side to a sufficient distance to allow of the
bevelled cogwheel D to be mounted thereon. Between the cogwheel D and the
spindle AI tap the underside of the boss B and insert a short shaft or spindle E
secured by set screw F and terminating in a point ou which the drill H revolves.
This drill holder has formed on its upper portion ratchet J which engages with the
cogwheel D by which it is held in position. The drill K is fixed by set screw in
the end of the drill holder. The cogwheel D is provided with a crank or handle L
and on being turned communicates motion to the drill holder and drill.
The top of the spindle A is surmounted by a smaller boss M into which the
guide rod C is also secured.
Free to slide upon the spindles or guide rods A and C I mount a sliding block N
carrying a projecting arm or bracket O of any convenient form to receive the rim
of a wheel and having at its centre a fixed or adjustable point or screw P intended
to enter the spoke hole in the rim of the wheel to be operated upon..
Below the block N I place round the spindles A and C (or round one of them
only) strong spiral springs Q Q' regulated as to position by an adjustable collar
block R and screw S.
When it is desired to use the drill the arm or bracket O is placed under the rim
of the wheel and the pointer P is placed in the spoke hole and adjusted if
necessary. The collar block R is then raised and secured in position by the set
screw S and the point of the drill at the same time is lifted to the spot on the hub
at which it is desired to operate and the spiral springs QQ being now compressed
the hollowed arm O and the point of the drill are kept firmly in position as the
drill enters the work which is thus automatically fed by the action of the spiral
springs QQ (which may be further regulated if desired by screwing the pointer P
up or down) the drill being rapidly rotated by the action of the cogwheel D when
turned by handle L or the like.

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. A hand drilling machine for cycle and like wheels having metal spokes,
constructed and arranged substantially as and for the purpose hereinbefore set
forth.
2. In a hand drilling machine for cycle and like wheels the use of guide rods
such as A and C carrying spiral springs such as QQ arranged to keep a sliding
or adjustable arm or bracket O close up to the rim of a wheel during the progress
of the operation of drilling substantially as described and as illustrated by the
accompanying drawing.
Dated this 27th day of October 1895
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.