IMPROVEMENTS IN APPARATUS TO BE USED IN CUTTING, DRESSING, AND NAILING MOULDINGS FOR FRAMES
Year: 1878

page_text: LETTERS PATENT to William Gentles, of Glasgow, in the County of Lanark,
North Britain, for the Invention of "IMPROVEMENTS IN APPARATUS TO BE
USED IN CUTTING, DRESSING, AND NAILING MOULDINGS FOR FRAMES." A
communication from abroad by Emil Sittmann, of Cologne, Germany.
Sealed the 24th September 1878, and dated the 18th July 1878.
PROVISIONAL SPECIFICATION left by the said William Gentles at the
Office of the Commissioners of Patents on the 18th July 1878.
WILLIAM GENTLES, of Glasgow, in the County of Lanark, North Britain.
"IMPROVEMENTS IN APPARATUS TO BE USED IN CUTTING, DRESSING, AND
NAILING MOULDINGS FOR FRAMES." A communication from abroad by Emil
Sittmann, of Cologne, Germany.
This Invention relates to the construction of simple apparatus whereby the
cutting, dressing, and nailing of mouldings for frames is effected in a more correct
and convenient manner than heretofore.
In carrying out the Invention a centre block of wood or metal of a triangular
form in plan is securely fixed upon a bed plate or frame, and this centre block has
a slot or groove formed in it which bisects it so as to form in plan two right-angled
triangles. This slot or groove is for the travel of the saw, and may when the
triangular centre block is of wood be lined with metal or other suitable
material.
Two sliding blocks, moving on guides upon the bed plate or frame, are provided
at the sides of the triangular centre block. These sliding blocks are formed of such
a shape at their inner ends as to correspond to the angular sides of the centre
block, and when in close contact with the triangular centre block the contour of the
whole is of a rectangular form in plan.

page_text: The mouldings to be operated upon are placed by the sides of the triangular
centre block and held firmly against it by the sliding blocks, which are provided
with adjusting screws, and the sliding blocks when adjusted are secured in position
by pinching screws or other suitable means.
The saw being guided correctly by the slot or groove in the triangular centre
block, cuts the mouldings so as to accurately mitre each other.
For dressing or planing the mitred ends of the mouldings they are placed at the
triangular base of the centre block, and consequently are in line with the side of the
rectangle formed by the centre and sliding blocks, and can then be conveniently
dressed by a plane or other tool.
The mouldings may be nailed or otherwise fastened whilst they are held in
the improved apparatus.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Gentles in the Great Seal Patent Office on the 17th January
1879.
WILLIAM GENTLES,. of Glasgow, in the County of Lanark, North Britain.
"IMPROVEMENTS IN APPARATUS TO BE USED IN CUTTING, DRESSING, AND
NAILING MOULDINGS FOR FRAMES." A communication from abroad by Emil
Sittmann, of Cologne, Germany.
The said Invention relates to the construction of simple apparatus by the aid of
which the cutting, dressing, and fastening of mouldings for frames can be effected
in a more correct and convenient manner than heretofore.
In carrying out the said Invention a triangular centre block of wood or metal,
bisected by a slot or groove so as to form in plan two right-angled triangles, is
secured upon a bed plate or board. Two angular blocks fitted to slide in
grooves
in the bed plate at opposite sides of the centre block are formed with their inner
faces parallel to the angular sides of the centre block, to or from which they can be
moved by adjusting screws. The saw is guided correctly by the slot or groove in
the triangular centre block, and cuts the mouldings so as to accurately "mitre"
with or meet each other.
:
For dressing or planing the mitred ends of the mouldings they are placed at the
triangular base of the centre block, and consequently are in line with the front or
long side of the centre block and with the fronts of the sliding blocks, and can then
be conveniently dressed by a plane or other tool.
The mouldings may be nailed or otherwise fastened whilst they are held in the
improved apparatus.
And in order that the said Invention and the manner of performing the same
may be properly understood, I hereunto append a Sheet of explanatory Drawings,
to be herein-after referred to, and representing the improved apparatus.
In the Drawings the same reference numerals are used to mark the same or like
parts wherever they are repeated.
Figure 1 is a plan; Figure 2, a front elevation; and Figure 3, a transverso
vertical section of the improved apparatus.
The bed plate or board 1, which is formed with a rebate 2 along one side, has
fixed down upon its middle a triangular centre block 3. This triangular centre
block 3 is bisected so as to form two right-angled triangles by a slot or groove 4.
This slot or groove 4 is for guiding the saw when cutting mouldings, and when the
triangular centre block 3 is of wood the groove 4 is by preference lined with
metal.
Two sliding blocks 5 formed on their under sides with ribs 6, which fit in guide
grooves 7 in the bed plate or board 1, are provided at the sides of the triangular
centre block 3. These sliding blocks 5 are formed with their inner faces parallel to
the angular sides of the centre block 3, to or from which they can be moved by
adjusting screws 8, working in vertical blocks 9 at each end of the bed plate or
board 1.
A moulding 10, indicated partly by dotted lines in Figure 1, when about to be
operated on is placed between the centre block 3 and one of the sliding blocks 5,
and the latter is screwed up to hold it firmly against the centre block 3. The end
of the moulding 10 to form a corner is then sawn, the saw being guided by the
groove 4, after which the moulding 10 is placed between the centre block 3 and the
other sliding block 5, with its end slightly projecting beyond the fronts of the centre
block 3 and sliding blocks 5, and the end is dressed by a plane or other tool, which
is guided along the rebate 2.
For nailing or otherwise fastening two mouldings together they are placed as
shown in full lines in Figure 1 between the centre block 3 and the two sliding
blocks 5, with their mitred ends in contact. When the sliding blocks 5 have been
-

page_text: adjusted by the screws 8 they are clamped by means of nuts 11, which are upon
screwed bolts 12, passed through the blocks 5, and through slots in the base plate
or board 1.
The triangular centre block 3 may be composed of two triangular pieces fixed
down upon the base plate, with a narrow space between them corresponding to the
slot or groove 4, for guiding the saw.
Having thus particularly described the said Invention, and the manner of
performing the same, as communicated to me by the said Emil Sittmann, I have to
state that I do not restrict myself to the precise details herein described or delineated;
but that what I believe to be novel and original, and claim as the Invention
secured to me by and in terms of the herein-before in part recited Letters Patent
is, the arranging or combining together of parts to form improved apparatus for
facilitating the cutting, dressing, and fastening together of mouldings for frames,
substantially as herein-before described.
In witness whereof, I, the said William Gentles, have hereunto set my
hand and seal, this Sixteenth day of January, in the year of our Lord Onc
thousand eight hundred and seventy-nine.
Witness,
EDMUND HUNT,
Patent Agent,
Glasgow.
W". GENTLES. (LS.)