Improvements in Machines for Drilling or Boring Variously Shaped Holes, Applicable also for Shaping or Trueing the Exteriors of Nuts or for Analogous Operations.
Year: 1890

page_text: Date of Application, 11th Mar., 1890
Complete Specification Left, 1st Apr., 1890-Accepted, 17th May, 1890
PROVISIONAL SPECIFICATION.
Improvements in Machines for Drilling or Boring Variously Shaped
Holes, Applicable also for Shaping or Trueing the Exteriors of
Nuts or for Analogous Operations.
We ALFRED HUGH TYLER and JOHN STUART ELLIS DE VESIAN both of the firm of
Tyler and Ellis of 5 Crown Court in the City of London Engineers do hereby declare
the nature of this Invention to be as follows:-
Our Invention has for its object to provide a machine by means of which holes of
any shape or size can be bored or drilled or by which the extoriors of nuts can be
shaped or trued or other analogous operations performed.
According to our Invention we provide a tool carrying spindle capable of being
moved longitudinally in its carrier or sleeve which is capable of a vibratory move-
ment by being mounted in a slide and on a universal joint or the like. The said
carrier or sleeve is provided with a roller (or equivalent bearing surface) and the part
in which it is mounted and in which it can vibrate provided with a template whose
shape determines the shape of the hole to be formed or the surface to he acted upon.
The spindle and its sleeve being rotated the tool carried by the spindle is caused to
describe a path determined by the shape of the template owing to the said roller or
bearing surface running over the template. For boring the tool is preferably shaped
or situated so that its acting edge is in line with the axis of the spindle.
The parts
described are mounted in a carrier capable of moving vertically in slides carried by
the framing of the machine for feeding the tool to and from its work or the work
may be fed relatively to the tool. The roller or like boaring surface is kept in contact
with the template by springs bearing at one end against the spindlo sleeve and at
the other end against some part which revolves with the spindle but does not vibrate
with it and a screw may be passed through a hole in the last named part to press the
roller or the like out of contact with the template when required or cause it to leave
the template at various points.
The tool may be so situated relatively to the spindle that the said tool will act
upon external surfaces such for example as upon nuts for bolts or the like.
The mechanism described may be varied in its details for instance the roller may
move outside the template. The template may be rotated at intervals or continuously
so as to vary the shape of the hole or surface and similarly if the spindle be moved
in its sleeve during the operating the hole or surface will be coned.
The vibratory or conic motion of the tool carrier may be obtained as described or
in any other suitable way for instance by moving it about a centre above or below
the template or we may use two unequal templates and rollers or the like to give the
vibratory or conic motion about an imaginary centre within or without the centre
line of the spindle.
If desired the spindle may be driven separately from the sleeve and at a higher or
lower speed.
By moving the spindle vertically in its sleeve the vibratory throw of the tool will
be varied and so the size of the figure described by the tool may be varied whilst
the shape of the said figure may be varied by inserting corresponding varieties of
templates.
DL: 11th J 1800

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Drilling or Boring Variously Shaped
Holes, Applicable also for Shaping or Trueing the Exteriors of
Nuts or for Anàlogous Operations.
We, ALFRED HUGH TYLER and JOHN STUART ELLIS DE VESIAN both of the firm
of Tyler and Ellis of 5 Crown Court in the City of London, Engineers 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 has for its object to provide a machine by means of which holes of
any shape or size can be bored or drilled or by which tho exteriors of nuts can be
shaped or trued or other analogous operations performed.
According to our Invention we provide a fool-carrying spindle capable of being
moved longitudinally in its carrier or sleeve which is capable of a vibratory move-
ment by being mounted in a slide and on a universal joint or the like. The said
carrier or sleeve is provided with a roller (or equivalent bearing surface) and the part
in which it is mounted and in which it can vibrate is provided with a template
whose shape determines the shape of the hole to be formed or the surface to be acted
upon. The spindle and its sleeve being rotated the tool carried by the spindle is
caused to describe a path determined by the shape of the template owing to the said
roller or bearing surface running over the-template. For-boring the tool is preferably
shaped or situated so that its acting edge is in a line with the axis of the spindle.
The parts described are mounted in a carrier capable of moving vortically in-slides-
carried by the framing of the machine for feeding the tool to and from its work or
the work may bo fed relatively to the tool. The roller or like bearing surface is kept
in contact with the template by springs hearing at one end against the spindle sleeve
and at the other end against some part which revolves with the spindle but does not
vibrate with it and a screw may be passed through a hole in the last named part to
press the roller or the like out of contact with the template when required or cause it
to leave the template at various points.
And in order that the said Invention may be fully understood we shall now proceed
more particularly to describe the same and for that purpose shall refer to the several
figures on the annexed sheet of drawings the same letters of reference indicating
corresponding parts in all the figures.
Figure 1 is a vertical section (on the line 7, 8 of Figure 2) of so much of the
apparatus as necessary to illustrate our Invention and Figure 2 is a sectional plan
the section being taken on the line 1-2 Figure 1 the remaining figures being details
and modifications as hereinafter described.
A is the main framing of the machine having guides upon which the tool carrying
head B can be moved to and from the work by the hand wheel and screw . C is
the driving-shaft for transmitting rotatory motion to the tool it being provided with a
bevel pinion gearing with a bevel pinion d secured to the shaft D. This shaft
carries a toothed wheel d which is engaged therewith by a key and feather and is
embraced by projections on the head B so that it is moved up and down the shaft D
with the head B. The toothed wheel dª engages with the toothed wheel e secured to or
formed in one with the collar E rotating in the bearing in the upper projecting
part B of the head B. The sleeve or carrier F (through which the tool spindle f
passes) is passed through the slot in the wheele and sleeve E the parts being made
as shewn in Figure 3 (which is a section on the line 3-4 of Figure 1) so that the
tool spindle rotates with the sleeve but can rock therein. At or towards the lower
end the tool spindle F is made with a spherical part which is mounted in a
similarly formed bearing in the lower projection B of the head B. The upper end
of the tool spindle F carries a roller for its equivalent which rotates on it, the
springs g keeping the said roller in contact with the interior surface of the template G
secured to the upper. projection B of the head. The spindle is connected to the
screw by the slide-connection shewn in Figures 4 and 5 so that whilst the tool can

page_text: be raised and lowered by the said screw the spindle can rock and rotate in the said
connection. The tool H is shewn as having its acting edge h in the same line as the
axial line of the spindle f which allows of the said edge being kept true to its work.
i is a screw by means of which the spindle may be brought into such a position that
its roller is not in contact with the template. Figure 6 is a section (on the line 5-6,
Figure 1) showing this screw and the springs from the underside and Figure 7
shows the template and roller in plan.
The tool may be so situated relatively to the spindle that the said tool will act upon
external surfaces such for example as upon nuts for bolts or the like. This is
illustrated in Figure 8. Figure 9 shews ordinary gear for reciprocating the head
whilst a slow rotatory movement is given to the tool the spindle of which is provided
with a bearing surface f³ with a small end to better enter the recesses of the template
as shewn in Figure 10.
The mechanism described may be varied in its details-for instance the roller may
move outside the template. The template may be rotated at intervals or continuously
so as to vary the shape of the hole or surface and similarly if the spindle be moved
in its sleeve during the operating the hole or surface will be coned.
The vibratory or conic motion of the tool carrier may be obtained as described or
in any other suitable way for instance by moving it about a centre above or below
the template or we may use two unequal templates and rollers or the like to give the
vibratory or conic motion about an imaginary centre within or without the centre
line of the spindle.
If desired the spindle may be driven separately from the sleeve and at a higher or
lower speed.
By moving the spindle vertically in its sleeve the vibratory throw of the tool will
be varied and so the size of the figure described by the tool may be varied whilst the
shape of the said figure may be varied by inserting corresponding varieties of templates.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In machines for the purposes mentioned a tool-carrying spindle capable of being
rotated and oscillated so that it moves the tool in a manner to correspond with a
template substantially as hereinbefore described.
2. In machines for the purposes mentioned a tool-carrying spindle capable of being
rotated and mounted in carrier oscillating as described and so that the spindle
can be moved vertically to adjust the area of the tool's action substantially as herein-
before described.
3. In machines for the purposes mentioned the combination with the subject matters
of the preceding claims of springs for keeping the roller or its equivalent in contact
with the template with or without means for removing such contact when desired
substantially as hereinbefore described.
4. In machines of the kind described a tool with its acting edge in axial line with
the spindle as shown.
5. The arrangement and combination of parts hereinbefore described and shewn in
Figures 1 to 7 and also the modifications explained with regard to Figures 8, 9
and 10.