Improvements in Moulding Planes.
Year: 1889

page_text: Date of Application, 20th Aug., 1889
Complete Specification Left, 8th Jan., 1890-Accepted, 8th Feb.,
1890
PROVISIONAL SPECIFICATION.
Improvements in Moulding Planes.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of 53,
Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent Agents,
do hereby declare the nature of this said Invention a communication to me from
abroad by David Babbitt of Flagstaff, in the County of Yavapai and Territory of
Arizona, United States of America, Merchant, to be as follows
This invention relates to a convertible moulding plane, the object of the invention
being to enable a single plane stock to receive and hold moulding bits or cutters
and sole pieces of different forms, so that by providing interchangeable sets of sole
pieces and bits or cutters, one plane can be made to do the work of the great number
of wooden planes heretofore necessary to plane out mouldings of various forms by
hand.
The plane stock is formed with a boss or projection at the upper part in which
there is a diagonal slot to receive a bit or blade, and at the front side of this slot is a
recess in which is received a wedge-nut that is tightened up by a set screw in order
to clamp the bit upon its bed.
Removable sole pieces abut against a shoulder at the upper part of the stock and
are clamped by set screws against the side of the stock with which they engage by
a dovetailed rib. The adjacent ends of the sole pieces are inclined and separated a
sufficient distance to receive the bit between them.
Bits and sole pieces of any shape desired may be secured to the same plane stock.
In setting the bit it is inserted in the groove in the boss, the wedge-faced clamping
nut is then drawn hard against the blade, an adjustment of the blade being obtained
by turning a screw which screws into a hole in the plane stock and bears against the
edge of the plane iron.
In order to vary the form of moulding to be produced, it is only necessary to
change the bits and sole pieces.
1000
A. MELVILLE CLARK.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Moulding Planes.
1, ALEXANDER MELVILLE CLARK of the firm of A. M. and Wm. Clark of 53,
Chancery Lane in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of this invention (a communication to me from
abroad by David Babbitt of Flagstaff in the County of Yavapai and Territory of
Arizona, United States of America, Merchant) 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 a convertible moulding plane; the object of the invention
being to enable a single plane stock to receive and hold moulding bits or cutters and
sole pieces of different forms, so that, by providing interchangeable sets of sole
pieces and bits or cutters, one plane can be made to do the work of the great
number of wooden planes heretofore necessary to plane out mouldings of various forms
by hand.
Reference is to be had to the accompanying drawing, forming part of this specifi-
cation, in which figure 1 is a side view of the improved form of moulding plane.

page_text: Figure 2 is a cross-sectional view taken on line x-x figure 1. Figure 3 is a cross-
sectional view taken on line y-y figure 1. Figure 4 is a sectional view taken on
line figure 1, and figure 5 is a sectional view taken on line v-v figure 1.
Similar figures of reference indicate corresponding parts in all the views.
The plane stock 10 has a handle 11 and a knob 12 and is formed with a boss
or projection 13 in which there is a diagonal slot adapted to receive a bit or blade,
as 14.
At the front side of this slot is a recess in which is received a wedge-nut 15
that is engaged by a set screw 16 which projects through a boss 17 opposite the
boss 13 and is held in place by a pin 18 which engages in a neck 20 in the screw 16.
The screw 16 is provided with a milled head 21. The face 2 of the nut 15 is inclined,
as clearly shewn in figure 5, so that if the screw 16 be turned to draw the nut
inward it will act as a wedge whereby the bit will be firmly clamped in place. Along
the upper portion of the plane stock there is a shoulder 22 against which abuts the
upper edge of the sole pieces 24 and 25. The web portions of the latter are grooved
on their inner face to fit a dovetailed rib 26 formed upon the plane stock, parallel
with its lower edge, the sole pieces being secured to the stock by set screws 30.
The adjacent ends of the sole pieces are inclined and separated a sufficient distance
to receive the bit 14 between them.
Bits and sole pieces of any shape desired, may be secured to the same plane stock.
In setting the bit, it is inserted in the groove in the boss 13, the wedge-faced
clamping nut 15 is then drawn, by means of screw 16, hard against the blade 14 an
adjustment of the blade being obtained by turning a screw 32 which screws into a
hole in the plane stock and bears against the edge of the plane iron, as shewn in
figures 1 and 4.
In order to vary the form of moulding to be produced, it is only necessary to
change the bits and sole pieces.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what I
claim is ;
1. The combination, with a plane stock 10, of removable sole pieces 24 and 25, a
bit 14, and adjusting screw 32 passed transversely through the body 10 into engage-
ment with the inner edge of the bit, a wedge-faced clamping bolt 15, and a screw
arranged in connection with said bolt, substantially as described.
2. The combination, with a moulding plane stock, of sole pieces 24 and 25 grooved
to receive ribs 26 which project from the plane body parallel with its lower edge,
set screws by which the sole pieces are clainped to the plane body, a bit 14 which
passes downward between the sole pieces, a wedge-faced clamping nut, an operating
screw arranged in connection with the nut, and a retaining pin arranged in connection
with the screw, substantially as described.
Dated this 8th day of January 1800
A. MELVILLE CLARK.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.