IMPROVEMENTS IN PLANING, SHAPING, SLOTTING AND SLOT-DRILLING MACHINES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
We, GEORGE ARTHUR CROW of 86 Park Road, in the city and county of
Newcastle upon Tyne, Engineer, and WILLIAM HEWSON CROW of 45 Rye Hill, in
the city and county of Newcastle upon Tyne, Engineer, do hereby declare the
nature of said invention for "IMPROVEMENTS IN PLANING, SHAPING, SLOTTING
AND SLOT-DRILLING MACHINES" to be as follows:-
-
This invention relates to machines for machinery Radius Bars, Links, Blocks,
Segments, or other Radii, the same not being complete circles.
The ordinary tables of Slotting or other machines are fitted with an additional
table sliding on sole plate of machine. This table has a projecting arm cast on it,
or attached to it, to which an adjustable lever is connected. This adjustable lever
being connected to a projecting arm on the cross table by means of a jointed
connecting rod. The result of this combined motion being that when the cross
table is moved in a transverse direction either way, by hand or self acting gear,
then the lower table is controlled by the adjustable lever and the connecting rod,
causing it to describe an are whose radius can be varied by moving the fulcrum of
the adjustable lever in a slot. This slot is in a projecting arm on the bed of the
machine.
The additional lower table is not absolutely necessary, but it is recommended as
by its use no disconnection of parts is necessary to fit the machine for ordinary
work, as the fulcrum of the adjustable lever may be moved to the neutral point
and the machine employed in the usual way.
This description describes the invention as applied to a Slotting machine, but it
can be applied similarly to Planing, Shaping, or Slot-drilling machines.
SHOOD TONING TO ROD IMTT SIST
W. LLOYD WISE,
Per F. J. Brougham,
Applicants' Agent..

page_text: We, GEORGE ARTHUR CROW of 86 Park Road in the city and county of
Newcastle upon Tyne, Engineer; and WILLIAM HEWSON CROW of 45 Rye Hill in
the city and county of Newcastle upon Tyne, Engineer, do hereby declare the
nature of said invention for "IMPROVEMENTS IN PLANING, SHAPING, SLOTTING
AND SLOT-DRILLING MACHINES " 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 improvements in Machines for Machining Radius bars,
Links, Blocks, Segments, or other Radii, the same not being complete circles.
The ordinary tables of a Slotting or other machine are fitted with an additional
table sliding on the sole plate of machine. This table has a projecting arm cast on 1
it, or attached to it, to which an adjustable lever is connected. This adjustable
lever being connected to a projecting arm of the cross table by means of a jointed
connecting rod. The result of this combined motion being that when the cross
table is moved in a transverse direction either way, by hand or self acting gear,
then the lower table is controlled by the adjustable lever and connecting rod causing
an are to be described, whose radius can be varied by moving the fulcrum in a slot.
This slot is in a projecting arm on bed of machine.
IIN
The additional lower table is not absolutely necessary, but it is recommended, as
by its use no disconnection of parts is necessary to fit the machine for ordinary
work, as the fulcrum may be moved to the neutral point and the machine employed
in the usual way.
This description describes the invention as applied to a Slotting machine, but it
can be applied similarly to Planing, Shaping, or Slot-drilling machines.
In order that the said invention may be fully understood we shall refer to the
several Figures on the Sheets of Drawings, hereunto annexed, the same letters of
reference indicating corresponding parts throughout all the Figures. In Sheet 2
some additional letters are used so as to explain the details as clearly as possible.
Figure 1 on Sheet 1 of our drawings represents a side elevation, of a Slotting
machine adapted for machining curves; Figure 2 is a plan and Figure 3 an end
elevation of same.
The ordinary tables of the Slotting machine are fitted with an additional table B
sliding on the sole plate A of machine. This table has a projecting arm C either
cast on it, or attached to it, to which an adjustable lever D is connected. This
adjustable lever being connected at the other end to a projecting arm F of the cross
table by means of a jointed connecting rod E. For the purpose of ensuring
accuracy a guide I is attached to the bottom longitudinal table B.
The result of this combined motion, being that when the cross table is moved in
a transverse direction, either way, by hand or self acting gear, then the lower
table B is controlled by the adjustable lever D and connecting rod E causing an
aro G H to,be described.
The radius of this arc can be varied by moving the fulcrum J in a slot in a
projecting slot arm K on bed of machine. The radius of the arc is gradually
increased or diminished as the fulcrum J is either brought nearer to, or further
from the longitudinal centre line of bed of machine. Thus if it be brought exactly
to centre of machine at L, the tables are then at the neutral point, and the machine
can then be employed on straight work without any disconnection of parts.
The adjustable lever D is marked at regular distances shewing each different
radius that can be slotted when the fulcrum J is fixed on each different marked
position on adjustable lever.

page_text: Figure 4 and Figure 5 shew enlarged views of method of connecting moveable
centre J. and slot arm K.
Figure 6 shews a side elevation of a Slotting machine for machining curves, but
without the additional lower table. Figure 7 is a plan, and Figure 8 an end
elevation of same.
With this arrangement when straight work is required to be done, some of the
levers or arms will have to be disconnected. Figure 9 shews an enlarged view of
method of connecting moveable centre J. and slot arm K.
Figure 1 on Sheet 2 of our drawings represents a side elevation of a Planing
machine adapted for machining curves.
Figure 2 is a plan and Figure 3 an end elevation of same.
From these drawings it will be seen that we apply the combined motion to the
rests of the cross slide of the machine by means of a pin fixed on the longitudinal
travelling table of the machine, and connected by a connecting rod and combination
of levers as before described, thus causing the cutting rest of the cross slide of the
machine to plane any work placed on the machine to a radius, which radius can be
altered by shifting the position of the fulcrum.
The ordinary table of the Planing machine is fitted with a pin M, connected by
a jointed connecting rod E to the adjustable lever D. The other end of the
adjustable lever being connected to the rest of the cross slide by means of a
gudgeon N.
The rest O is connected by a screwed spindle Q to the cutting rest P. The
spindle is plain at the end R, with 2 collars on, so that it merely revolves in
bearing R. To give place to this spindle Q, the original feed spindle for working
the rest is removed. In the rest P is inserted a screwed nut S.. This enables
the cutting rest P to be moved to any desired position, and thus the feed can be
given to it in the usual manner without affecting the rest O in any way. The
result of this combined motion being that when the travelling longitudinal table is
moved either way by suitable gearing, then the rest O of the cross slide is controlled
by the adjustable lever D and connecting rod E causing an arc to be described;:
and the cutting rest P being connected to the rest O by the spindle Q also causes
an arc G H to be described. The radius of this are can be varied by moving the
fulcrum J as before described.
The adjustable lever D is marked at regular distances shewing each different
radius that can be planed when the fulcrum J is fixed on each different marked
position on adjustable lever.
For convenience of planing work of different heights, two carriages W are cast
or attached to bed of machine, the slot arm K is attached to these by means of
telescopic tubes and clips or other simple method of adjustment to suit varying
heights.
When the machine has to plane straight work, the screw Q, the bearing R, and
the nut S are taken out, the original longer screw is put in, and the bearing R is
replaced by the screwed nut S. A screwed nut T, which had been taken out when
the machine was employed on curved work is now replaced in rest P.
Both heads or rests are then entirely independent of each other and can be
worked either way by hand or self acting gear in the usual manner by means of
the screws Q and V.
Figure 4 and Figure 5 shew enlarged views of method of connecting moveable
centre J and slot arm K.
We do not confine ourselves to this method alone of Planing Curves, as we.
propose also to plane them by introducing a cross slide on travelling longitudinal
table, and thus make the work being planed describe an arc of a circle instead of
the rests, as in the Slotting machine.
In Sheet 3 Figure 1 represents a side elevation of a Drilling machine fitted with
the combined motion for machining curves. The additional lower table is here .
dispensed with.
°

page_text: Figure 2 is a corresponding plan of the same, and Figure 3 and Figure 4 shew
enlarged views of method of connecting moveable centre J and slot arm K.
We do not confine ourselves to any particular form of cutter, as curves can be
cut out, and radii formed either by the ordinary drill or any other revolving
cutter.
It will be obvious that this combined motion can be applied to what are termed
Shaping Machines, the principle being the same as we have applied to Planing
Machines, but we have not thought it necessary to illustrate this application.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is performed we declare what we
claim is:
1st In a Slotting machine-The combined motion resulting from the moveable
adjustable fulcrum, and arrangement of arms or levers and connecting rod, by
means of which all classes of curved work can be slotted Arranged and operating
substantially as shewn and described.
2nd In a Planing or Shaping machine. The combined motion resulting from the
moveable adjustable fulcrum, and arrangement of arms or levers, and connecting
rod, by means of which all classes of curved work can be planed or shaped.
Arranged and operating substantially as shewn and described.
3rd In a Drilling Machine. The combined motion resulting from the moveable
adjustable fulcrum, and arrangement of arms or levers, and connecting rod, by
means of which all clases of curved slot-drilling may be performed, or curves cut
out and radii formed either by the ordinary drill or any other form of revolving
cutter. Arranged and operating substantially. as shewn and described.
215
DL: 9th of November 1.901.
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