Improvements in Arrangements or Mechanism for Grinding or Sharpening Twist Drills.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Arrangements or Mechanism for Grinding or
Sharpening Twist Drills.
I, THEODORE COVENTRY, Managing Director of the Firm Smith and Coventry
Limited, of Gresley Iron Works, Salford, Manchester, in the County of
Lancaster, Engineers and Tool Makers, do hereby declare the nature of the said
invention to be as follows:-
The improvements hereinafter explained are made upon those described in
the Specification of Letters Patent No. 2921 of 1879 granted to William Ford
Smith and Arthur Coventry. The object of the present invention is to simplify
the mechanism and grind twist drills so that a good clearance or "backing off
is given to the cutting lips of the drill and more metal will be left, so that the
cutting edge will be better supported and more strong and lasting in use. It
is preferred to use an ordinary grinding stone, but the improved arrangements
may also be used with composition emery or other suitable grinding wheels.
In using the invention with an ordinary grinding stone, there is a slideway
secured to or formed upon the side of the frame or trough of the grinding stone,
this slideway being at an angle to a vertical plane and is parallel to a line from
the grinding point on the cylindrical periphery or face of the grinding stone
drawn to the axis upon which the stone rotates. A slide is fitted on the said
slideway at an angle, which slide is actuated by a screw and hand wheel and is
used for adjusting the point of the drill to the face of the grinding stone.
This slide has a slideway that extends horizontally from it across and parallel
to the cylindrical face of the grinding stone, and upon this cross slideway a
slide is fitted that can be moved to and fro by a suitable handle so that when
the drill is in position for grinding as hereinafter described with its end against
the stone, it can be traversed to and fro across the grinding face of the stone.
The arrangements so far explained are similar to those described in the
Specification of the aforesaid Letters Patent. The arrangements hereinafter to
be explained differ from those described in the aforesaid Complete Specification.
On the said cross slide moving parallel to the grinding face stone, an angle
bracket is adjustably secured by a bolt. This said angle bracket on the cross
slide, forms the bearing of the axis of the lever or frame (hereinafter called
the angle frame) carrying the drill when being oscillated while being ground
or sharpened.
This axis is made of cone form and is held in position in its bearings in
the angle bracket by lock nuts at its end, the other end having a leather or
other elastic washer between a shoulder upon it and the angle bracket to prevent
grit from getting into the bearing surfaces.
This axis is at an angle to the lengthway of an arm of which axis it forms a
part, and upon this arm the said angle frame is mounted so as to slide to and fro
in the lengthway of the said arm having the axis for oscillation.

page_text: The said angle frame is secured to the said arm by a bolt passing through
a hole in the angle frame, and through a slot in the lengthway of the said arm,
the upper edge of which is indexed for different diameters of drills to be ground,
and this index is set to an edge on the end of the angle frame where it is secured
to the said arm so that when the angle frame is adjusted to the diameter of drill
to be operated upon the bolt is fastened and this gives the proper amount of
"backing off" for the diameter of the drill.
The angle frame may be supposed of L section, the vertical side of the L
being that secured to the said arm while the horizontal part of the L is that
to which the parts are secured for holding the drill to be ground in the proper
position as hereinafter described.
The lengthway of the said arm is at an angle to the lengthway of the hori-
zontal part of the L of the angle frame.
The end of the angle frame nearest the stone is about horizontally parallel
to the axis of the stone, and at this end of the angle frame there is a V formed on or
secured to it, and the centre line equally dividing the angle of the V is hori-
zontal and the opening of the V is at an angle of 48° and will suit all sizes
of drills from 1/4 of an inch to 14 inches diameter-larger drills may be operated
upon by using suitable bushes or sockets on the shank.
One edge of this V has a thin steel plate secured to it to project in front of
the edge of the V which plate forms a stop for the twist edge of the drill near
its cutting lips to come against the drill being turned in the V until the twist
edge comes against the edge of this stop plate when the lip of the drill is then
in the correct position for being ground or sharpened, and will be in about a
line parallel with the grinding face of the stone.
When the drill is placed in this V and adjusted, the point of an adjustable
screw is brought against its side to hold and force it firmly into the V-this
adjusting screw which is provided with a lock nut screws into a bracket which
can be adjusted to and from the side of the drill on a projection from the
angle frame or V part formed by a stud which stud is at an angle horizontally
to the lengthway of the angle frame, and when the bracket is adjusted it is
secured by a thumb screw which screws in the bracket, the end of the screw
acting against a key coming against a flat on the upper face on the said stud pro-
jecting at an angle.
There is another similar V formed in a part that can slide in a slot in the
lengthway of the horizontal face of the L of the angle frame, and can then be
secured thereto by a winged screw nut.
This is arranged in like manner to that for the lip end of the drill and
acts for the cylindrical part of the drill near the shank end.
When the drill is placed in position in these Vs, it is held in the last
named by the end of a screw in an adjustable bracket on a horizontal stud
from the part in which the V is formed, but the stud in this case is not at an
angle to the lengthway of the angle frame as it is for the first named V, but
is at a right angle thereto.
In the slot in the lengthway of the angle frame, there is a part that can be 4
slided to and fro in the slot and when in the correct position can be secured by
a winged screw. This part has two arms extending upwards, to the end of one
arm, a bar is hinged or jointed, and the other end of this bar comes in front
(towards the end of the shank of the drill) and when in its horizontal position
rests against it upon a ledge thereon.
The vertical front face of this hinged bar forms a stop to come against the
end of the shank of the drill to be ground, and it is by this stop that the drill
is pushed towards the stone so that its cutting lips will project from the V at
that end to the required extent to be ground.
5
When one cutting lip of a drill has been ground the screws acting to keep 5
it in the Vs are slackened, the said hinged bar is lifted to allow the drill to be
drawn back in the Vs sufficiently and to be turned to bring its other twist edge

page_text: against the said thin steel stop plate, then the hinged bar is turned down and
the shank end of the drill is brought against its face, and the screws are then
rotated to lock the drill in the two Vs, when the other cutting lip can be ground
exactly to the same extent.
When such cutting lip of the drill is being ground the angle frame is oscil-
lated up and down by the handle upon its end and the cross slide is at the same
time moved to and fro across the cylindrical grinding face of the stone.
The axis on which the angle frame rocks or oscillates is not placed parallel
to the cylindrical grinding face or axis of the grinding stone as described in the
said Complete Specification but is at an angle thereto, so that the "backing
off' or clearance from the cutting lips of the drill is not a segment of a cylinder
as in the said specification, but the segment of a conc which thus gives a better
clearance and a stronger and better supported cutting lip.
"
Variations may be made in the arrangements above described without departing
from my invention.
Dated this Twenty-first day of February 1898.
PETER J. LIVSEY,
Agent.
Improvements in Arrangements or Mechanism for Grinding or
Sharpening Twist Drills.
I, THEODORE COVENTRY, Managing Director of the Firm Smith and Coventry
Limited,, of Gresley Iron Works, Salford, Manchester, in the County of
Lancaster, Engineers and Tool Makers, 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:-
-
66
The improvements hereinafter explained are made upon those described in
the Specification of Letters Patent No., 2921 of 1879 granted to William Ford
Smith and Arthur Coventry. The object of the present invention is to simplify
the mechanism and grind twist drills so that a good clearance or backing off"
is given to the cutting lips of the drill and more metal will be left, so that the
cutting edge will be better supported and more strong and lasting in use. It
is preferred to use an ordinary grinding stone, but the improved arrangements
may also be used with composition emery or other suitable grinding wheels.
In using the invention with an ordinary grinding stone, there is a slideway
secured to or formed upon the side of the frame or trough of the grinding stone,
this slideway being at an angle to a vertical plane and is parallel to a line from
the grinding point on the cylindrical periphery or face of the grinding stone
drawn to the axis upon which the stone rotates. A slide is fitted on the said
slideway at an angle, which slide is actuated by a screw and hand wheel and is
used for adjusting the point of the drill to the face of the grinding stone.
This slide has a slideway that extends horizontally from it across and parallel
to the cylindrical face of the grinding stone, and upon this cross slideway a
slide is fitted that can be moved to and fro by a suitable handle so that when
the drill is in position for grinding as hereinafter described with its end against
the stone, it can be traversed to and fro across the grinding face of the stone.
The arrangements so far explained are similar to those described in the
Specification of the aforesaid Letters Patent. The arrangements hereinafter to
be explained differ from those described in the aforesaid Complete Specification.
On the said cross slide moving parallel to the grinding face of the stone, an angle

page_text: bracket is adjustably secured by a bolt. This said angle bracket on the cross
slide, forms the bearing of the axis of the lever or frame (hereinafter called
the angle frame) carrying the drill when being oscillated while being ground
or sharpened.
This axis is made of cone form and is held in position in its bearings in
the angle bracket by lock nuts at its end, the other end having a leather or
other elastic washer between a shoulder upon it and the angle bracket, to prevent
grit from getting into the bearing surfaces.
This axis is at an angle to the lengthway of an arm of which axis it forms a
part, and upon this arm the said angle frame is mounted so as to slide to and fro
in the lengthway of the said arm having the axis for oscillation.
The said angle frame is secured to the said arm by a bolt passing through
a hole in the angle frame, and through a slot in the lengthway of the said arm,
the unner edge of which is indexed for different diameters of drills to be ground,
and this index is set to an edge on the end of the angle frame where it is secured
to the said arm so that when the angle frame is adjusted to the diameter of drill
to be operated upon the bolt is fastened and this gives the proper amount of
"backing off" for the diameter of the drill.
The angle frame may be supposed of L section, the vertical side of the L
being that secured to the said arm while the horizontal part of the Lis that s
to which the parts are secured for holding the drill to be ground in the proper
position as hereinafter described.
The lengthway of the said arm is at an angle to the lengthway of the hori-
zontal part of the L of the angle frame.
The end of the angle frame nearest the stone is about horizontally parallel
to the axis of the stone, and at this end of the angle frame there is a V formed on or
Lecured to it, and the centre line equally dividing the angle of the V is about hori-
zontal or parallel to the base of the angle frame and the opening of the V is at
an angle of 48° and will suit all sizes of drills from 1/4 of an inch to 1½ inches
diameter larger drills may be operated upon by using suitable bushes or sockets
on the shank if the Vs be extended
One edge of this V has a thin steel plate secured to it to project in front of
the edge of the V which plate forms a stop for the twist edge of the drill near
its cutting lips to come against the drill being turned in the V until the twist
edge comes against the edge of this stop plate when the lip of the drill is then
in the correct position for being ground or sharpened, and will be in about a
line parallel with the grinding face of the stone.
When the drill is placed in this V and adjusted, the point of an adjustable
screw is brought against its side to hold and force it firmly into the V-this
adjusting screw which is provided with a lock nut screws into a bracket which
can be adjusted to and from the side of the drill on a projection from the
angle frame or V part formed by a stud which stud is at an angle horizontally
to the lengthway of the angle frame, and when the bracket is adjusted it is
secured by a thumb screw which screws in the bracket, the end of the screw
acting against a key coming against a flat on the upper face on the said stud pro-
jecting at an angle.
There is another similar V formed in a part that can slide in a slot in the
lengthway of the horizontal face of the L of the angle frame, and can then be
secured thereto by a winged screw nut.
This is arranged in like manner to that for the lip end of the drill and
acts for the cylindrical part of the drill near the shank end.
When the drill is placed in position in these Vs, it is held in the last
named by the end of a screw in an adjustable bracket on a horizontal stud
from the part in which the V is formed, but the stud in this case is not at an
angle to the lengthway of the angle frame as it is for the first named V, but
is at a right angle thereto.
In the slot in the lengthway of the angle frame, there is a part that can be

page_text: али то пг the Blog and when in the correct position can be secured by
a winged screw. This part has two arms extending upwards, to the end of one
arm, a bar is hinged or jointed, and the other end of this bar comes in front
(towards the end of the shank of the drill) and when in its horizontal position
rests against it upon a ledge thereon.
The vertical front face of this hinged bar forms a stop to come against the
end of the shank of the drill to be ground and it is by this stop that the drill
before it is secured in the Vs may be pushed towards the stone so that its cutting
lips will project from the V at that end to the required extent to be ground.
When one cutting lip of a drill has been ground, the screws acting to keep
it in the Vs are slackened, the said hinged bar is lifted to allow the drill to be
drawn back in the Vs sufficiently and to be turned to bring its other twist edge
against the said thin steel stop plate, then the hinged bar is turned down and
the shank end of the drill is brought against its face, and the screws are then
rotated to lock the drill in the two Vs when the other cutting lip can be ground
exactly to the same extent.
When such cutting lip of the drill is being ground the angle frame is oscil-
lated up and down by the handle upon its end and the cross slide is at the same
time moved to and fro across the cylindrical grinding face of the stone.
The axis on which the angle frame rocks or oscillates is not placed parallel
to the cylindrical grinding face or axis of the grinding stone as described in the
said Complete Specification but is at an angle thereto, so that the "backing
off or clearance from the cutting lips of the drill is not a segment of a cylinder
as in the said specification, but the segment of a cone which thus gives a better
clearance and a stronger and better supported cutting lip.
Variations may be made in the arrangements above described without departing
from my invention.
Fig. 1, is a side elevation.
Fig. 2, a front elevation, and
Fig. 3, a plan view.
These views show the improved mechanism as applied to and used in connec-
tion with a grinding stone.
Fig. 4, is a side elevation, and
Fig. 5, a plan.
These views show the mechanism for holding the drill while being ground
or sharpened, detached from the slides carrying the same and upon a larger
scale.
Fig. 6, is a cross section at A-B Fig. 4, looking towards the right of Fig. 4.
Fig. 7, is also a cross section on the line C Fig. 5, through the axis of the
bolt and then stepping to the line E Fig. 5.
Fig. 8, is an elevation looking from the handle end of the angle frame of
an hinged stop detached, shown in elevation and plan in Figs. 4 and 5.
Fig. 9, is a plan view of the conical axis upon which the drill holder rocks,
this axis having an arm connected with it at an angle to it, to which arm the
drill holding mechanism or angle frame can be secured by a bolt passing
through a slot in it which allows of adjustment.
Fig. 10, is a view of the axis and arm shown by Fig. 9, in the plane of the
flat way of the arm.
Fig 11, is a plan, and
Fig. 12, is an elevation of the angle frame or handle part for holding the
drill while being ground, detached, and with all the other parts of the mechan-
ism shown in Figs. 4 to 8 inclusive removed from it.
Fig. 13, is a view looking at the cutting end of the drill when placed in
the V to be sharpened showing that it will take a large or small drill.
Fig. 14, is a side view, and
Fig. 15, an end view of a twist drill having a stepped collar upon it shown
in section, for the purpose hereinafter explained. In Figs. 1, 2 & 3-the grind-

page_text: ing stone, its trough, slides and other parts are as explained in the Complete
Specification of Letters Patent No. 2921 of 1879 granted to William Ford Smith
and Arthur Coventry, but in order that the parts may be more readily understood
and without reference to the said specification, I will refer to them by letters
of reference. a, the grinding stone having its axis a¹ in bearings in an iron
trough and stand a², which has a hood a³, and extension from the hood at-
the hood a³, carrying the vertical axis 5, upon which the vessel aº, for water
for the stone is placed.
On the side of the trough a², there is a slideway a7, attached, and upon this
slideway, a slide as, is mounted which is actuated by a screw, and hand wheel a",
at its upper end. This slide a³, moves in a line parallel to a line drawn from
the axis a', of the grinding stone to the periphery of the stone at the point where
the cutting lip of the drill to be ground or sharpened is to come against the
periphery of the stone across which it is traversed to and fro to be sharpened.
On one side of the said slide a8, on the diagonal slideway a, there is an
arm ab, that extends across and is parallel with the axis of the grinding stone.
This arm is a slideway for a slide a, that can be moved to and fro upon it
by a handle ad, so that when the drill to be sharpened is in position it can be
traversed to and fro across the face or cylindrical periphery of the grinding
stone in a line parallel with the axis of the stone.
On the slide aº, moved by the handle, a bracket b, is secured at an angle
which is shown in Fig. 5.
All the parts above referred to by letters of reference are the same or are
similar to those described in the said Complete Specification of the said Letters
Patent, except in respect of the angle of the bracket b.
The bracket b, is bored out with a conical hole to fit the axis c¹, conical by
preference (see Fig. 9) and there is a leather or other suitable elastic washer 3,
at the large end of the axis, to come between the shoulder on the axis c¹, and
the end of the bearing in the bracket b, to prevent grit or other matters from
getting to the axis, the small end of which is secured in the bearing by screws
and lock nuts 3, as shown in Fig. 5.
**
This
The angle frame or handle part d, shown separate by Figs. 11 and 12, is
secured to the arm c, forming a part of the cone axis c¹, the vertical side of the
angle frame, being grooved to fit the arm c, (see Figs. 6 and 7) and it is
secured thereto by a bolt d¹, (see Figs. 5 and 7) which passes through a hole
in the vertical part of the angle frame and through a slot c', in the arm c.
slot c, shown in Fig. 10, and the end of it is also seen in Fig. 4, allows of the
adjustment of the angle frame or handle part d, upon the arm c, to give the
radius for clearance,' or
backing off" according to the diameter of the drill
to be sharpened, and in order that the angle frame d, may be at once adjusted to
the diameter of drill to be sharpened there is an index c, on the upper edge
of the arm c, (see Figs. 5 and 9) the end of the vertical part of the angle framed,
being brought opposite to the required line or mark of the index. The end of
the angle frame or handle part 2, nearest the cylindrical face of the grinding
stone is inclined as shown in Figs. 5 and 11 and there is a V, (see Figs. 6
and 12) formed in it, a line dividing the V equally being parallel to the base
of the angle frame, this V is a contained angle of 48°, which angle is the
correct one for all diameters of drills, so as to bring the cutting lip to be ground
of each drill into a horizontal position on the face of the grinding stone and
parallel to its axis when the upper face of the screw edge of the cutting lip to
be ground is touching the edge of the hardened steel plate &, the edge of
which projects 5° below the upper edge or side of the V, see Fig. 13.
This steel edge d³, when the drills are adjusted against it places the lip of
the drills to be sharpened as above stated in the correct position in relation to
the cylindrical face of the grinding stone for all diameters of drills the mechanism
herein before described is intended to operate upon, and it is also correct when
applied to similar mechanism for drills of larger diameter.

page_text: Fig. 13 in full line shows the V with a large and small drill in it to show
that all drills between the sizes to be ground in this mechanism may be held to
be sharpened in the same V, (and when sufficiently extended as shown in dotted
line, the same angle of Vs may be used for any size of drill) the screw edge of
the cutting lip being brought against the edge of the steel plate attached to
one side of the V as above explained. On one side of the angle frame or handle
part d, nearest the stone, a stud 3, is secured at an angle, best seen in Fig. 5,
and upon this stud a bracket d, is arranged to slide to and fro and when ad-
justed it is secured by a thumb screw d, the point end of which acts against
a key which comes against a flat place on the inclined stud
.
The adjustable bracket d, carries the bearings of a screw do, which when its
point is adjusted against the cylindrical side of the drill to be sharpened (as
shown in Fig. 6) will hold it in the V with the steel edge ³, which screw do,
when adjusted is secured by a lock nut (see Fig. 6).
The angle of the stud 3, is such that the point of the clamping screw do, will
always abut against the full diameter of the drills for which each apparatus is
intended as near to the point of the drill in the V, as possible.
The base of the angle frame or handle part d, is formed into a slideway, and
has a slot d, in its lengthway, and to this slideway and slot, a sliding bracket
with a V of 48° is secured by a thumb screw 9, (see Figs. 4 and 7) and the
cylindrical part of the drill between its flute and shank comes into this V as
shown in Fig. 7.
Where the cylindrical portion of the drill between the flute and shank is
tapered off as shown in Fig. 14, at e¹, a stepped bush e, shown in section in
Fig. 14, fitting the taper shank or a parallel bush bored to the taper of the
shank over which a series of split cylindrical bushes of varying diameters fit
according to the diameter of drills to be ground may be employed to secure the
drill being held concentrically in this sliding V8, with the V d³, secured
to the angle frame, that step of the bush corresponding with the diameter of the
drill being the one coming with the V d³.
This slide d, has a stud secured in its sides for a bracket and screw arranged
as described in reference to the bracket shown in Figs. 4, 5 and 6 except that
the stud is in this case perpendicular to the lengthway of the angle frame d.
The drill to be sharpened is held in the two Vs, one of which 8, is adjustable
as before stated, to a position to suit the length of the drill to be operated upon.
There is also a hinged stop shown in Figs. 4, 5 and 8, which consists of a
bracket or slide, that fits in the slot d', in the angle frame or handle part
and can be secured by a thumb screw db, shown in Fig. 4 when adjusted.
To one arm of this adjustable slide or bracket 1, a latch or arm do, is jointed
at do, so that it can be turned into the position in which it is shown in Figs. 5
and 8, in which position its face can be brought against the shank end of the
drill to be sharpened, and when turned upwards it will give clear space for
the drill to be removed after sharpening one cutting lip and is then replaced
in the horizontal position the end of the shanks of the drill being brought against
it to grind the other edge. It is this latch do, which secures that one cutting
lip of the drill will be ground to exactly the same extent as the other.
The drill when fixed in the holder d, and its Vs, is oscillated up and down on
the axis c¹, by the handle, while being at the same time traversed to and fro
across the cylindrical face of the stone that gives the required "backing off"
by the handle ad. It will be noted that the axis c¹, is not parallel with the
cylindrical face or axis of the stone, but is at an angle thereto (the face of the
stone is represented by dotted lines a in Fig. 5) so that the " backing off" is
conical, which gives a better and stronger cutting edge, than as formerly, when
the "backing off" was cylindrical, the axis in that case being parallel to the
face or axis of the grinding stone a.
The angle bracket b, on the upper face of the slide a°, and the angle of the
་

page_text: axis c', in the bracket b, and the angle of the angle frame d, to the axis c¹, and
the position of the drills when held in the Vs & and d³, and the angle of
the axis e¹, to the face of the grinding stone all as hereinbefore described, bring
the edge of the cutting lip of the drill to be ground or sharpened horizontal
and parallel to the face and axis of the grinding stone when the cutting edge
of the lip is being ground or sharpened, and the oscillation of the angle frame d,
by the handle d, gives the conical "clearance" or backing off" above
referred to.
66
The edge of the cutting lip of the drill is only parallel to the axis of the stone
when it is being ground, as then it is fairly opposite the stone as when the
handle d, is oscillated to give the backing off," the line of the cutting lip
owing to the turn the drill receives by oscillating the handle then departs from
that position but it comes back to it at each back oscillation.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
an
1. The combination of a stationary V (d*) with plate (d²) at such
angle that the drill is placed in such a position that the point of the screw
opposite thereto for clamping the drill in the V will always come against the
full diameter of the drill and never come in contact with either of the flutes
substantially as and for the purpose hereinbefore described and illustrated by
the drawings.
2. The combination of the gripping arrangement consisting of a station-
ary V () and screw at the point of the drill with an adjustable V (d) and
another screw opposite thereto which is adjusted to grip the cylindrical part of
the drill between the ends of the flutes and the shank or a stepped collar (e)
thereon substantially as and for the purpose herein before described and illus-
trated by the drawings.
3. The combination for gripping the point end of the drill consisting of a V
and a clamping screw carried in an adjustable bracket on a stud (3) at an
angle to the lengthway of the angle frame, this angle being such that the
clamping screw (76) always abuts on the full diameter of the drill as near to
the end as possible substantially as and for the purpose hereinbefore described
and illustrated by the drawings.
4. The combination of a V part on a drill grinding or sharpening holder
having a thin plate (2) on one edge of the V against which drills of any size
between the smallest and largest the mechanism is designed for, may be held
and presented to the grinding stone or surface in the correct position substan-
tially as herein before described and illustrated by the drawings.
5. The combination of angle frame or handle frame, with a stationary and
adjustable V, and with holding arrangements and with an hinged stop for the
shank ends of the drills substantially as and for the purpose herein before
described and illustrated by the drawings.
6. The combination and arrangement of mechanism, such as is referred to in
the fifth claim so that it can be adjusted on an axis at an angle to the lengthway
of the angle frame or handle frame, substantially as
and for the purpose
herein before described and illustrated by the drawings.
7. The combination and arrangement of mechanism such as is referred to in
the sixth claim in which the axis of oscillation when sharpening the drills is at
an angle to the axis of the grinding stone or surface in order to give a conical
backing off" to the drills substantially as and for the purpose hereinbefore
described and illustrated by the drawings.
66
8. The combination and arrangement of mechanism substantially as and for
the purpose hereinbefore described and illustrated by Figs. 4 to 13 inclusive
of the drawings.
9. The combination and arrangement of mechanism hereinbefore described

page_text: and illustrated by Figs. 4 to 13 inclusive of the drawings when combined and
arranged with the adjusting and actuating slides substantially as hereinbefore
described and illustrated by Figs. 1, 2 and 3 of the drawings.
Dated this Seventeenth day of November 1898.
PETER J. LIVSEY,
Agent.