Improvements in Hand Machines for Screw Threading, Drilling, and like Operations.
Year: 1894

page_text: Date of Application, 8th Mar., 1894
Complete Specification Left, 7th Dec., 1894-Accepted, 12th Jan., 1895
PROVISIONAL SPECIFICATION.
Improvements in Hand Machines for Screw Threading, Drilling, and
like Operations.
CHARLES LESLIE NEWLAND 22 West Street Bromley in the County of
Kent Cycle Engineer do hereby declare the nature of this invention to be as
follows:-
My invention relates to a new machine for cutting a screw thread on wires set
screws and other similar articles and is specially suitable for forming the thread on
wirespokes used for the manufacture of cycle and other wheels. By its use threads
may be formed with more accuracy and more expeditiously than with any machine
I know of at present in use whilst the machine is simple and comparatively
inexpensive. It consists of a cast iron or metal pillar or stand about eight to twelve
inches in height suitably formed for being screwed or otherwise secured on a bench.
The top of the pillar is T shaped and has a hole through the arm, a spindle
is placed in the hole similar to a mandrel of a lathe which is free to revolve, it may
be provided with suitable bushes or bearings. The spindle may have a groove
turned in it into which the point of a set screw passing through the side or top of
the pillar, so that when the spindle is inserted in its place the screw will prevent it
moving outwards or inwards while it is free to revolve, or if the spindle passes
through and through the hole through the arm at the top of the pillar it may be
furnished with a movable collar suitabely fixed on the right hand end to bear on
the end of the arm and there keep the spindle in its place, a hole may be drilled in
its exterior end or through and through and is provided with an arrangement for
securing on its left hand end a circular or angular screw plate such as is commonly
used for the threading the spokes in the manufacture of cycle wheels. A device
I find conveniant for this purpose is a cap to screw on the end of the spindle with
its centre cut away leaving the screw plate in view. Near the end of the spindle is
fixed a bevel pinion and a bevel wheel preferably about eight inches in diameter is
placed on a spindle on the side of the pillar, which bevel wheel is made to gear with
the pinion. The bevel wheel is provided with a handle whereby it may conveniently
be turned, so that on turning the handle the spindle will be caused to revolve
rapidly. For threading spokes I find it is conveniant to have say eighteen to twenty
cogs in the pinion and eighty to ninety cogs in the bevel wheel so that for each
revolution of the bevel wheel the spindle will revolve about four and a half times.
The spokes being pointed and enter into the screw plate three and a half or four
turns of the handle forward will form the requisite length of thread on them, and a
similar number of turns of the handle backwards then disengages the spoke. When
the spindle is drilled through and through a continuous thread may be formed on a
wire by passing it through and through the machine, when the spindle passes
through and through the arm of the pillar the other end to that on which the screw
plate is secured may conveniently be provided with a cutter for pointing the ends
of spokes preparatory to threading them. The screw plate may be fixed on either
end, and the bevel wheel on either side of the pillar this being obvious, cutters and
various other tools may be secured in the machine in place of the screw plate above
described, or a suitable chuck being provided for the purpose drills may be

page_text: secured in it so that it may be employed for various other purposes besides screw
cutting.
Dated this Eighth day of March 1894.

page_text: the requisite length of thread on them, and a similar number of turns of the handle
backwards then disengages the spoke. The handled may be fixed on the right end
of the mandrel beyond the movable collar; or the handle d may be made movable
to take the place of the collar j, which makes it a single gear having disposed of
pinion b and bevelled wheel a. When the spindle i is drilled through a continuous
thread may be formed on a wire by passing it through the machine, when the
spindle passes through the arm of the pillar g the other end to that on which the
screw plate or die e is secured may conveniently be provided with a cutter for
pointing the ends of spokes preparatory to threading them. The screw plate
or die e may be fixed on either end, and the bevelled wheel on either side of the
pillar g this being obvious.
Cutters and various other tools may be secured in the machine in place of the
screw plate above described, or a suitable chuck being provided for the purpose,
drills or screw taps may be secured in it so that it may be employed for various
other purposes besides screw cutting. A rest facing the screw plate may be fixed
to hold the spoke secure when the mandrel and screw plate travels on the handle
being turned, or the rest may be made to allow a spoke to travel when the screw
plate revolves without travelling outwards or inwards.
A hole is made in top of pillar or stand to allow a lubricator to be placed for the
purpose of oiling.
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. In hand machines for screw threading, drilling and like operations, the
combination of the bevelled cog driver a with handle d mounted on the arm h of
the pillar and engaging with a pinion or bevelled cog follower 6 fixed to a
revolving spindle i, and the screw plate or die e in the cap fat one end of
the spindle and collar j at the other end, substantially as herein described and
according to the accompanying drawing.
2. In hand machines for screw threading, drilling and like operations, the
combination of the various parts constructed in the manner and for the purposes
hereinbefore described.
3. In hand machines for screw threading, drilling and like operations, the
combination of the pillar g arm h spindle i die e cap fand a handle d with a suitable
arm fixed to the spindle i in place of the movable collar, substantially as herein
described.
4. In hand machines for screw threading, drilling and like operations, the
combination of the various parts formed and constructed without the bevelled cog
driver a or follower band supported by any suitable stand, to receive a chuck or
the like for supporting drills, screw taps or other like tools, substantially as herein
described.
D
71 3
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicant.