Improvements in or relating to Rabbet, Badger, and other similar Planes.
Year: 1893

page_text: Date of Application, 16th Nov., 1893
Complete Specification Left, 16th Aug., 1894-Accepted, 22nd Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in or relating to Rabbet, Badger, and other similar
Planes.
I, EDWIN LEWIS TIMMIS of 60 Chester Road, Castle, Northwich, Joiner, do
hereby declare the nature of my said invention to be as follows:-
This invention has for its object to provide rabbet, badger or other similar
planes which are used for planing one side of an internal angle or rabbet with
means for preparing the path of the plane, that is, forming a cut or nick in the
wood in advance of the plane iron so that the operation of planing may be greatly
facilitated by reason of the cut or nick preventing the choking of the plane.
In accordance with my invention I employ a small brass or other metal plate
and I fix said plate by screws or other suitable means upon one side of the plane
at a point a little in front of the plane iron with its bottom edge flush with the
plane sole and with its outer surface flush with the side of the plane, the plane
being suitably recessed to allow of this.
On the back of this plate I mount a small cutter bar the lower portion of which
is so formed as to project into a slot in the plate and be flush with the outer
surface thereof and the extreme end of this bar is sharpened or provided with a
cutting edge which is in a line with the outer edge of the plate and the direction
in which the plane will move, and said sharpened extremity extends below the
bottom edge of the plate.
This small cutter bar is clamped to the back of the plate by a screw, screwing
through the plate and drawing a clamping block or holder onto the back edge of
the cutter or said cutter bar is held or clamped by a spring secured to the plate
and shaped to fit the bar. This small cutter may be adjusted to extend below the
bottom edge of the plate more or less, as required by slackening the clamping
screw, sliding the cutter bar up or down and re-clamping it in the desired position.
The clamping block or spring being situated on the back of the plate the side of
the plane has to be recessed accordingly. In order to facilitate the adjustment of
the cutter bar from the front of the plate I form an opening or slot therein and
I provide that portion of the cutter which can be seen therethrough with one or
more indentations so that a sharp instrument may serve to slide the bar up or
down.
In practice this improved cutter bar serves to form a cut in the wood slightly in
advance of the plane iron which prevents the shavings choking up the plane as
aforesaid and also affords protection to the outer angle of the mouth of the plane
directly in front of the plane iron.
In the case of badger planes I prefer to arrange the plate across the end of the
mouth portion so as to strengthen same and to allow the plane iron to come to the
outer edge of the plane in the usual manner I form an inclined groove in the back
of the plate terminating in an opening in the bottom edge of the plate.
Dated this 15th day of November 1893.

page_text: VITICATION.
Improvements in or relating to Rabbet, Badger, and other similar
Planes.
I, EDWIN LEWIS TIMMIS of 60 Chester Road, Castle, Northwich, Joiner, do
hereby declare the nature of my said 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 has for its object to provide rabbet, badger and other similar
planes used for planing internal angles or rabbets with means for forming a cut or
nick in the corner of the angle or rabbet in advance of the plane iron so that the
shaving taken from that side of the angle being planed will not require to be torn
away from the other side of the angle by the plane iron as heretofore but will be
already separated, thus facilitating the working of the plane and ensuring of a
perfectly sharp and square angle in the wood and the non-choking of the plane.
In accordance with my invention I employ a, by preference small brass plate
which I fix upon the side of the plane at a point slightly in front of the plane iron
or across the throat or mouth of the plane as hereinafter described, and to this
plate I affix a small cutter-bar with its cutting edge arranged to extend a little
below the sole of the plane and directly at the edge which takes into the extreme
corner of the angle or rabbet. In working the plane this cutter bar makes a small
incision in the wood in advance of the plane iron equal in depth to the thickness of
shaving to be removed, and thus severs the edge of the shaving as aforesaid.
And in order that my said invention shall be the more readily understood and
carried into practical effect I have hereunto annexed a sheet of drawings and will
now proceed to describe the same with the assistance of the various figures and
letters of reference marked thereon.
Fig. 1 is a front view, Figs. 2 and 3 top and bottom edge views respectively,
Fig. 4 a back view and Fig. 5 an end or side view of one form of my improved
plane attachment, suitable for badger planes.
Figs. 6 and 7 shew the application of such attachment to a badger plane, Fig. 7
being a transverse section taken on lines a-b, c-d shewing the plane acting on an
internal angle.
Fig. 7 illustrates the object being planed with the plane removed.
Figs. 8 and 9 are detail views.
Fig. 10 illustrates my improved attachment as applied to rabbet planes.
Fig. 11 illustrates the application of the attachment as a separate tool.
In accordance with my invention and as applied to badger planes I employ the
plate (A) made of brass or other suitable material which is recessed or let into the
side of the plane, by preference across the mouth or throat as shewn in Fig. 6,
the outer surface of the plate being flush with the surface of the side of the plane.
The bottom edge of this plate is also flush with the sole of the plane. The plate
is fixed to the plane by screws (B), (B) through holes (B¹).
Upon the back of the plate and at a point in front of the opening for the plane
iron is a small cutter bar (C) (the plane being recessed out as shewn in Fig. 7 to
allow of this) which cutter-bar is of the form shewn in Fig. 8 or preferably of the
form shewn in Fig. 9. This cutter-bar is held to the back of the plate (A) by the
flat spring (D) and small clamping screw (E). The lower portion of this cutter-
bar enters a slot (F) in the plate (A) and comes flush with the front or outside
face thereof as seen more clearly in Fig. 7. The cutting point of the cutter-bar
extends below the lower edge of the plate to an extent equal say to that shewn in
Figs. 1, 4 and 7 or to the depth or thickness of shaving required, and such point is
of the shape shewn more clearly in Fig. 8 having a feather edge so that it will
simply cut and not plane the wood.

page_text: In using a badger plane with my improved attachment applied thereto a small
cut or incision (1) is made in the extreme angle of the wood as seen more clearly
in Fig. 74 in advance of the plane iron which severs the shavings of the side (2)
from the side (3) so that when the plane iron comes to remove the shaving it has
not to tear such shaving away as heretofore, but finds it already separated. In
this way the working of the plane is made easy and a perfectly sharp and square
angle is produced. Similarly the shavings have no tendency to stick in the throat
of the plane as heretofore, which hitherto has been occasioned by the shavings not
being effectually torn from the wood, or in tearing slowly have not passed
completely into the throat of the plane.
Planes fitted with my improved attachment are advantageous in facing up the
sides of tenons and will cut a perfectly square shoulder at any angle across the
grain of wood without the assistance of any other tool.
To effect the adjustment of the cutter bar, that is, to raise or lower it according
to the amount it is required to protrude beyond the lower edge of the plate (A) a
slot (G) is formed opposite the top end of the cutter bar and in the cutter bar
one or more indentations are formed into which a sharp pointed instrument may
take and raise or lower the said cutter bar (when released) without removing the
plate.
The cutter bar is of such a length that it may be raised above the lower edge of
the plate (A) and thus be made non-working when required. To remove it from
the plate altogether the screw (E) is released and the cutter bar slid out from the
back of the plate.
The plate (A) is, by preference situated across the throat of the plane in order
to strengthen it at that point and to allow of the plane iron coming to the edge of
the sole a groove (H) is formed in the back of the plate (A) (see Fig. 4) which
terminates in the opening (I).
As applied to rabbet and similar planes the plate (A) is slightly modified as
shewn in Fig. 10 and is fixed immediately in front of the plane iron opening. The
action and arrangement of the cutter bar and spring clamp of this modification are
precisely the same as that of the arrangement previously described. The plate is
fixed by screws (J). Two of these attachments may be used, one on either side of
plane as each plate is double handed (right and left), and thus serve for trenching
purposes. This attachment may also be used for fillesters. This form of plate
may be applied to badger planes, but it does not support the mouth of the plane so
well as the larger ones.
This improved attachment may with advantage be used as a separate tool and in
that form may be used, say for scoring cardboard, cutting paper or other materials
and be conveniently applied to a handle as shewn in Fig. 11, the extension of the
cutter bar below the plate determining the depth of the cut or score.
It will be obvious that the cutter bar in either modification may be arranged at
an angle, or may be modified in form, and one or more cutter-bars, with suitable
provisions, may be applied to one plate.
Having thus 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 badger, rabbet and other planes the use of a plate or its equivalent carrying
a cutter or cutter bar whose cutting edge produces a slight nick or cut in advance
of the plane iron in the object being planed substantially as and for the purposes
hereinbefore described and illustrated on the accompanying drawing.
2. In badger and similar planes the use of a plate (A), having groove (H),
opening (1), slots (F) and (G) and carrying cutter-bar (C), clamping spring (D)
and set screw (E) and mounted and operating substantially as herein before
described and illustrated in Figs. 1 to 9 of the accompanying drawing.
3. In rabbet and similar planes the use of the plate (A), having slots (F)

page_text: and (G), carrying cutter bar (C), clamping spring (D) and set screw (E) sub-
stantially as and for the purposes hereinbefore described and illustrated in Fig. 10
of the accompanying drawing.
4. The improved attachment separate or combined with a plane substantially as
set forth and illustrated.
Dated this 15th dow of & voust 1901
JOHN G. WILSON & Co.,
Agents.