Year: 1888

page_text: Date of Application, 1st Feb., 1888
Complete Specification Left, 1st Nov., 1888
Complete Specification Accepted, 14th Dec., 1888
We, JOHN PALMER WOODCOCK of No. 6B Victoria Street, Westminster and ALFRED
ERNEST WILLIAM GWYN of No. 9 Ducksfoot Lane in the City of London, Engineers
do hereby declare the nature of this invention to be as follows:-
This invention relates to the construction and arrangement of machines for drilling
vertically a number of holes at one time.
For this purpose we provide a base table on which the plate or piece to be drilled
is fixed in the usual way and above this table we arrange a rectangular frame which
can be raised or lowered vertically by screws one near each angle of the frame. This
frame has two longitudinal girders which can be adjusted laterally to various widths.
Above these girders and also below them is bolted a gauge or pattern plate that is to
say a plate through which holes corresponding in number and position with the holes
that have to be drilled have been previously hored. In each of the holes of the pair
of gauge or pattern plates is fitted to revolve a drill spindle having a socket at its lower
end to receive a drill and having a driving coupling at its upper end.
Each drill spindle may be provided with an automatic relief spring.
In the upper framing of the machine which is carried by columns or uprights from
the base table is mounted a screwed horizontal shaft or several of these parallel to one
another and geared together so that all of them revolve at equal speeds in the same
direction. We prefer to arrange the gearing so that one or more of these screwed
shafts can be thrown out of action when required. Beneath each of these screwed
shafts which extend the whole length of the machine is fixed a longitudinal girder
on which are fitted to slide, a number of saddles. Each of these saddles has through
it a pair of vertical holes one on each side of the girder, and in each of these vertical
holes is fitted to revolve a driving spindle having at its lower end a coupling for
conveying rotation to one of the drill spindles below and having fixed on its upper
end a skew toothed pinion gearing with the screwed shaft. Thus each of the screwed
shafts as it revolves gives rotation to a number of pairs of drill-driving spindles
arranged on each side of it, each pair revolving in a saddle which can be adjusted

page_text: where required along the girder carrying it. The coupling at the lower end of each
drill-driving spindle in the upper framing is connected to the coupling at the upper
end of the corresponding drill spindle in the gauge or pattern plates below, by an
intermediate spindle provided with universal joints and capable of extension.
telescopically which arrangement allows for the drill spindle not being in the same
vertical line with its driving spindle and for the drill being raised or lowered with the
frame that carries the gauge or pattern plates. On the main driving shaft which may
be one of the screwed shafts above mentioned, or on a counter shaft worked from it,
is bevil gearing engaging with two bevil pinions which are loose on a vertical spindle,
but either of which can be clutched to the vertical spindle by a conical or other
suitable sliding clutch arranged to be shifted by the attendant at the base table
this spindle being made to revolve quickly in the one direction or slowly in the
other according as the one clutch or the other is engaged. From this vertical
spindle through bevil gear and speed cones rotation is imparted to the four screws
of the frame which carries the drill spindles. While the screwed shafts above
revolve, the drills driven from them through the jointed telescopic intermediate
spindles are fed downwards by the slow descent of the gauge or pattern plate frame,
which has its screws then driven by the slow gear above. For raising the drills the
clutch above is shifted so as to cause these screws to revolve rapidly in the opposite
direction.

page_text: Improvements in Multiple Drills.
We, JOHN PALMER WOODCOCK. of No. 6" Victoria Street, Westminster, and
ALFRED ERNEST WILLIAM GWYN, of No. 9 Ducksfoot Lane, 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 :--
This invention relates to the construction and arrangement of machines for drilling
vertically a number of holes at one time, which we will describe referring to the
accompanying drawings of which Fig. 1 is a vertical section and Fig. 2 a side elevation
partly in section.
For this purpose we provide a base table A on which the plate or piece to be
drilled is fixed in the usual way, and above this table we arrange a rectangular
frame B which can be raised or lowered vertically by screws C one near each angle of
the frame. This frame has two longitudinal girders D which can be adjusted laterally
to various widths. Above these girders and also below them is bolted a gauge or
pattern plate E that is to say a plate through which holes corresponding in number
and position with the holes that have to be drilled have been previously bored. In
each of the holes of the pair of gauge or pattern plates E is fitted to revolve a drill
spindle F having a socket fat its lower end to receive a drill and having a driving
coupling at its upper end.
Each drill spindle F may be provided with an automatic relief spring f2.
In the upper framing of the inachine which is carried by columns or uprights from
the base table is mounted a screwed horizontal shaft G or several of these parallel to
one another and geared together so that all of them revolve at equal speeds in the
same direction. We prefer to arrange the gearing so that one or more of these
screwed shafts G can be thrown out of action when required. Beneath each of these
screwed shafts G which extend the whole length of the machine is fixed a longitudinal
girder H on which are fitted to slide a number of saddles h. Each of these saddles h
has through it a pair of vertical holes one on each side of the girder H and in each
of these vertical holes is fitted to revolve a driving spindle J, having at its lower end
a coupling for conveying rotation to one of the drill spindles F and having fixed on
its upper end a skew toothed pinion 3 gearing with the screwed shaft G. Thus each
of the screwed shafts G as it revolves gives rotation to a number of pairs of drill
driving spindles J arranged on each side of it, each pair revolving in a saddle which
can be adjusted where required along the girder H. carrying it. The coupling jat
the lower end of each drill driving spindle in the upper framing is connected to the
coupling at the upper end of the corresponding drill spindle in the gauge or pattern
plates below, by an intermediate spindle L provided with universal joints and capable
of extension telescopically which arrangement allows for the drill spindle not being
in the same vertical line with its driving spindle and for the drill being raised or
lowered, with the frame that carries the gauge or pattern plates. On the main driving

page_text: shaft which Day be one of the screwed shafts G above mentioned, or on a countershaft
worked from it, is bevil gearing M engaging with two bevil pinions which are
loose on a vertical spindle, but either of which can be clutched to the vertical spindle
by a conical or other suitable sliding clutch m arranged to be shifted by the attendant
at the base table this spindle being made to revolve quickly in the one direction or
slowly in the other according as the one clutch or the other is engaged. From this
vertical spindle through bevil gear and speed cones N rotation is imparted to the four
screws C. While the screwed shafts G above revolve, the drills driven from them
through the jointed telescopic intermediate spindles L are fed downwards by the slow
descent of the gauge or pattern plate frame D which has its screws then driven by
the slow gear at M above. For raising the drills the clutch m is shifted so as to cause
these screws to revolve rapidly in the opposite direction.
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:
The construction of multiple drilling machine, substantially as herein described and
11d he the drawing
ABEL & IMRAY,
Agents for the Applicants.