IMPROVEMENTS IN SPOKESHAVES PLANES AND OTHER SIMILAR TOOLS
Year: 1885

page_text: I EDWARD PRESTON of Whittall Street Birmingham in the County of Warwick
Manufacturer do hereby declare the nature of my invention for "IMPROVEMENTS IN
SPOKESHAVES PLANES AND OTHER SIMILAR TOOLS" and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:—
My Invention relates to the mode of adjusting the cutting irons of Spokeshaves
Planes and other similar Tools and has for its object the simplification of the
devices for this purpose with greater ease and efficiency in use.
In a Spokeshave constructed in accordance with my Invention I make the
cutting iron with a transverse narrow slot or opening of rectangular shape near its
upper end so as to be in a convenient position upon the metallic or other frame of
such Spokeshave for the application of the parts now to be described.
The cutting iron is operated by a screw acting in the direction of its length as
is common with some Tools, but in accordance with my Invention I place the main
adjusting screw immediately at the back of and in the same angle as the cutting
iron and attach its lower end to any suitable support formed upon or attached
to the frame of the tool. Upon this screw I place a long cylindrical shaped nut
or socket screwed internally to match, and formed at its top end with an enlarged
head milled or otherwise formed for operating with the thumb and finger and at
its lower end with a collar projecting sufficiently far from the barrel of the nut or
socket to enter the slot or opening in the top end of the cutting iron, so that by
the revolution of the said nut or socket the cutting iron is raised or lowered at will.
A set screw is provided as usual for securing the cutting iron when in position.
This method of operating or adjusting the cutting irons is also applicable to Planes
and other similar Tools and the nature of the modifications required for this
purpose are slight and such as would be readily understood by any mechanic or
Tool Maker.
The operation of the adjusting screw may be modified as follows without
departing from the nature of this Invention. Instead of the bolt being fixed and
the nut or socket moving, the latter may be fixed and the screw or bolt made to
move, and to carry at a suitable point a flange or collar to gear into the slot
or opening in the cutting iron in the manner and for the purpose above described.

page_text: B is the
I now proceed to particularly describe and ascertain the said Invention and in
what manner the same is to be performed reference being had to the accompanying
sheet of drawings. Figures 1. and 2 shew my Invention as applied to a Spoke-
shave. Figures 3 and 4 shew a modification of same applicable generally.
Similar letters of reference refer to corresponding parts in all the figures.
In Figures 1 and 2 A is the frame of a Spokeshave made of metal.
cutting iron and C the set screw for securing the same when adjusted all being so
far constructed and fitted as usual. The novel parts for adjusting the cutting iron
before setting are indicated as follows. D is the adjusting screw affixed firmly to
the portion of the frame marked a and projecting above the top of the cutting
iron as shewn, upon this is fitted a deep nut d with milled head or other similar
device d' and collar d³. This collar projects into a rectangular slot or opening d
in the upper part of the cutting-iron as shewn. By these devices when the set
screw C. is loosed the cutting iron is easily and quickly adjusted as will be readily
understood by turning the milled head of the nut d by the thumb and finger.
In figures 3 and 4 a modification is shewn in which the adjusting screw D is
fitted or made with a solid head milled or otherwise formed for turning as before
and with the collar d³. This engages with the slot or opening d in the cutting
iron in the same way as in the last arrangement.
The portion of the frame marked a is in this case screwed internally for a
sufficient depth for the action of the adjusting screw which operates within it, and
in this arrangement duplicate set screws are provided one on each side of the
adjusting screw as shewn at c³ and c³.
This Invention is also applicable to planes and similar tools as before mentioned
and in the case of planes two adjusting screws may be used instead of one and be
conveniently arranged on each side of the handle.
My Invention may also be easily adapted to tools with frames of wood or partly
of wood and partly of metal, although it is mainly applicable to Planes Spokeshaves
and other similar tools wholly or principally made of metal.
Having now particularly described and ascertained the nature of my Inven-
tion and in what manner the same is to be performed, I declare that what
I claim is
1. The construction and use of Spokeshaves Planes and other similar tools, in
which the cutting irons are adjustable by means of screws, arranged so that the
said cutting irons are directly operated by collars working within slots or openings
in the said irons, which collars may either be carried by nuts upon the said screws
or upon the adjusting screws themselves substantially as and for the purposes
hereinbefore described.
.