Improvements in Mitre Sawing Apparatus.
Year: 1897

page_text: Date of Application, 14th Dec., 1897
Complete Specification Left, 19th Aug.. 1898-Accented 5th Nov
1808
PROVISIONAL SPECIFICATION.
Improvements in Mitre Sawing Apparatus.
I, GUSTAV CLEMENS, of Werléstrasse No. 60, Barmen, Germany, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in mitre sawing and cutting apparatus,
which are novel in the following particulars. The board has an adjustable rule
in horizontal direction and an adjustable die to fasten the working piece. The
rule is provided with an exchangeable scale to cut the working piece on the desired
length. The saw is so guided that it can be moved only in vertical direction, the
guider being arranged for saws or knives of different breadth.
These improvements are represented in Figures 1-6 of the accompanying
drawing.
Figure 1 is a plan showing the complete apparatus;
Figure 2 is a front elevation of the same;
Figure 3 a view seen from left side of Figure 2;
Figure 4 a vertical section of the guide standard;
Figure 5 a horizontal section of the same;
Figure 6 a longitudinal view at right angle to Fig. 4.
Like letters of reference designate corresponding parts in the drawing.
In said drawing a indicates a plate of preferably cast iron having a smooth planed
level and being provided with feets b. c is a rule serving as support for the work-
ing piece, it is linked to the plate a by means of a bolt, the fulcrum of which lies
preferably out of the middle in the left part of the machine and as near as possible
at the plane in which the saw is moved. The rule is adjustable on an arch d
which is graduated for a number of angles and it has also a number of apertures e,
which engages a pin f that is closely held therein by a lever g fitted to the rule
and being influenced by a coil spring h. When the lever g is disengaged of the
pin f, the same slips out of its aperture which is done by means of a spring k laid
round said pin.
From this it will be understood, that the rule can be easy placed in any angle
to get the desired bevel for the working piece. If a small angle is required which
is not shown in the scale and a corresponding aperture is not provided for the rule
may be held in the desired mitre by a set screw? fitted to the rule.
Now I have made some provision to secure the working piece in position during
he sawing or cutting process. The plate a is for this purpose provided with a
lot m into which fits a screw n, a die o of angle iron or other suitable form is
laced turnable over the screw so that it can be moved parallel to the rule c and
llows the working piece to be fastened between rule and die and be closely held
ast for which operation has been hitherto used the hand of the workman.
is
Now to cut or saw the pieces on exactly the desired length, I have arranged a
od P which is screwed to the rule and provided with a scale; on the rod
mounted a slide q having a border q¹ against which lies the end of the working
iece. The slide can be adjusted at will and fixed on its rod by a set screw r
[Price 1

page_text: The tool which may be either a saw of any form with or without frame, or a
knife is exactly guided in a right angle to the radius of the graduated arch which
is effected by the standards s being constructed as illustrated in Figures 4-6.
This standard consists of a tubular piece s'having a flange by which it may be fixed
to the plate a. It serves as guide for a tube t which like its guide is provided with
slots v.
The tube is fitted with two vertical rollers w being arranged close
together which are journalled between screws y and are fitted with a number of
collars corresponding in height with each other. Between said collars the blade
of the saw is guided and as the rollers w are turnable no friction is produced and
the saw or knife may be very easy moved. The tube t follows then the saw in
vertical direction as the latter is provided with a U-shaped band k¹, that surrounds
the top level of the saw or knife and fits between the rollers so that when the saw
is lifted the collars cause also a lifting of the tube t and vice versa. The saw must
a little extend over the bottom of the 'tube't in order to cut the piece through, and
then no lining of wood etc. is required in the plate, the tube bottom resting upon
said plate limits the downstroke of the saw, which in the lowest position enters a
groove z in plate a.
. In case the blade of the saw becomes worn or if a smaller saw blade is used the
back of the blade is placed and held between correspondingly lower arranged
collars so as enable the edge of the saw to cut the working piece always through.
Dated this 10th day of December 1897.
Improvements in Mitre Sawing Apparatus.
I, GUSTAV CLEMENS, of Werléstrasse, No. 60, Barmen, Germany, Manufacturer,
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:-
This invention relates to improvements in a mitre sawing and cutting apparatus,
which is novel in the following particulars. The board has a rule adjustable in
horizontal direction and an adjustable die to fasten the working piece. The rule
is provided with an exchangeable scale for cutting the working piece on the desired
length. The saw is so guided that it can be moved only in vertical direction, the
guider being arranged for saws or knives of different breadth.
These improvements are represented in Figures 1-6 of the drawings accom-
panying the Provisional Specification.
Figure 1 is a plane showing the complete apparatus.
Figure 2 is a front elevation of the same.
Figure 3 a view seen from left side of Figure 2.
Figure 4 a vertical section of the guide standard.
Figure 5 a horizontal section of the same.
Figure 6 a longitudinal view at right angle to Fig. 4.
Like letters of reference designate corresponding parts in the drawing.
In said drawing indicates a plate preferably of cast iron having a smooth
planed level and being provided with feet b c is a rule.or abutment serving as

page_text: support for the working piece, it is linked to the plate a by means of a bolt, the
fulcrum of which lies preferably out of the middle in the left part of the machine
and as near as possible at the plane in which the saw is moved. The rule c is
adjustable on an arch d which is graduated for a number of angels and it has also
a number of apertures e, which engage a pin f that is closely held therein by a
lever g fitted to the rule and being influenced by a coil spring h. When the lever g
is disengaged of the pin f, the same slips out of its aperture which is done by means
of a spring laid round said pin.
From this it will be understood, that the rule can be easy placed in any angle
to get the desired mitre for the working piece. If a small angle is required which
is not shown in the scale and a corresponding aperture is not provided for the rule
may be held in the desired mitre by a set screw / fitted to the rule.
Now I have made some provision to secure the working piece in position during
the sawing or cutting process. The plate a is for this purpose provided with a
slot m into which fits a screw n, a die o of angle iron or other suitable form is
placed rotatably over the screw so that it can be moved parallel to the rule b and
allows the working piece to be fastened between rule and die and be closely held
fast for which operation has been hitherto used the hand of the workman.
P
is
Now to cut or saw the pieces on exactly the desired length, I have arranged a
rod p which is screwed to the rule and provided with a scale; on the rod
mounted a slide 9 having a border q' against which lies the end of the work.ng
piece. The slide can be adjusted at will and fixed on its rod by a set screw r.
The tool which may be either a saw of any convenient form and size with or
without frame or a knife is exactly guided in a right angle to the radius of the
graduated arch which is effected by the standards s being constructed as illustrated
in Figures 4-6. This standard consists of a tubular piece s having a flange by
which it may be fixed to the plate a. It serves as guide for a tube t which like its
guide is provided with slots v. The tube t is fitted with two vertical rollers w which
are journalled between screws y and are fitted with a number of collars x corres-
ponding in height with each other. Between said collars the blade of the saw is
guided and as the rollers w may rotate no friction is produced and the saw or knife
may be very easy moved. The tube t follows then the saw in vertical direction as
the latter is provided with a U-shaped band, or blade that surrounds the upper edge
of the saw or knife and fits between the rollers so that when the saw is lifted the
collars cause also a lifting of the tube t and vice versa. The saw must extend a
little over the bottom of the tube t in order to cut the piece through, and then no
lining of wood or the like is required in the plate a, the tube bottom resting upon
said plate limits the downstroke of the saw, which in the lowest position enters a
groove z in plate a.
If a smaller saw is used collars of different height are provided which may be
engaged by the saw or knife as shown in dotted lines Figure 6.
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:-
1) In combination with a mitre sawing apparatus having a plate a an adjustable
supporting rule c and a vertically guided saw or knife, an adjustable fastening
clamp o as said clamp being attached to the frame plate by means of a slot as m
and screw for the purpose set forth.
2) In combination with a mitre sawing apparatus having a plate a an adjustable
supporting rule c and a vertically guided saw or knife, an exchangeable rod as p
being connected to said rule and having a scale on one or more sides s, a slide as
being mounted to the rod which is fitted with an edge as q¹ and may be adjusted
by a set screw for the purpose set forth.
3) A standard for guiding the saw or knife consisting of a tube or like piece
having vertically guided in it a tubular lining as t, said lining being provided with

page_text: vertical rollers as w that are fitted with collars arranged in different height in
combination with a saw or knife provided with a U-shaped band at its top all as
illustrated and for the purpose set forth.