Improvements in or connected with Tables or Benches for Circular Saws.
Year: 1896

page_text: Date of Application, 31st Jan., 1896
Complete Specification Left, 1st Oct., 1896-Accented, 7th Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements in or connected with Tables or Benches for
Circular Saws.
We, WILLIAM THOMAS EVANS, GEORGE EVANS, JAMES EVANS, and
EXCELSIOR EVANS, of the Firm of George Evans and Sons, Newton Heath,
Manchester, in the County of Lancaster, Timber Merchants, do hereby declare
the nature of this invention to be as follows:-
This invention is designed to provide a table or bench for circular saws capable
of being raised above or lowered below the centre of the spindle or saw any desired
distance. Hitherto saw benches or tables have only been movable a limited
distance above but not below the centre of the saw so that it has been found
impracticable to cut a slit in the end of a piece of wood square at both sides
without cauting or inclining the timber which is a dangerous and risky
proceeding.
This invention consists essentially in forming the table with a slot or opening
cut in it through which the saw spindle and its supporting bearings can pass to
allow the table to fall below the centre and also in constructing it with movable
adjustable gap plates at either side of the saw whereby the saw gap can
be reduced to prevent small or thin strips of wood or other articles falling
between.
In carrying out the invention we prefer to mount the saw spindle in stationary
bearings and raise and lower the bench top but if desired the spindle bearings may
be made to rise and fall and the bench top be fixed.
In the back of the bench top we cut a transverse slot which we cover with a
loose or hinged plate. This slot extends from the saw gap to the back edge of the
bench top and is sufficiently wide to permit the passage through it of the head or
journals of the saw spindle. At the other side of the saw is a movable gap plate
which can be removed and replaced by another formed with an aperture in which
the nut on the end of the saw spindle can rotate.
The movable gap plate at the front of the saw can be set nearer to or further
away from the saw blade according to the thickness of the blade and the set of the
saw, or the description of work being done.
At the back of the saw we place a movable strip or second gap plate preferably
of T or L shape by which the gap behind the saw can be closed or otherwise
adjusted, for the same purpose as the gap plates at the front of the saw.
The table slides en suitable guides and is raised and lowered to the desired level
by screws or other mechanism.
Dated this 28th day of January 1896.
WM. P. THOMPSON & Co.,
6, Bauk Street, Manchester, Patent Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with Tables or Benches for
Circular Saws.
We, WILLIAM THOMAS EVANS, GEORGE EVANS, JAMES EVANS, and
EXCELSIOR EVANS, of the Firm of George Evans and Sons, Newton Heath,
Manchester, in the County of Lancaster, Timber Merchants, 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 is designed to provide a table or beuch for circular saws capable
of being raised above or lowered below the centre of the saw-shaft or spindle any
desired distance. Hitherto saw benches or tables have only been movable a
limited distance above but not below the shaft or centre of the saw so that it has
been found impracticable to cut a slit in the end of a piece of wood square at
both sides without cauting or inclining the timber which is a dangerous and risky
proceeding.
Our invention consists essentially in constructing the saw bench so that the
bench top will fall below the top by cutting or forming in the bench or table a slot
or opening through which the saw spindle and its supporting bearings can pass to
allow the table to fall below the centre and also in constructing it with movable
adjustable gap plates at either side of the saw whereby the saw gap cau
be reduced to prevent small or thin strips of wood or other articles falling
between.
It will be fully described with reference to the accompanying drawings.
Fig. 1. Front elevation showing beuch top below the saw shaft partly in section
on line - Fig. 2.
Fig. 2. Plan of same.
Fig. 3. Transverse section on line y-y Fig. 2.
Fig. 4. Side clevation partly in section on line - Fig. 2 showing bench top
above the saw shaft the usual position of saw bench in relation to the saw, and saw
shaft.
Fig. 5. Plan of adjustable gap plate.
Fig. 6. Plan of gap plate for use when bench top is on level with centre of saw
spindle.
The bench top or table A is set or mounted upon slides a and is raised and
lowered by screws B operated by hand wheel C and bevel wheels band c. The
screws B are capable of allowing the bench top A to fall about 4 inches below the
saw shaft D and of raising it to about 6 in. above but the extent of movement may
be increased if desired. The saw shaft D is mounted in fixed pedestals or bearing
blocks E aud the saw blade F is mounted on the end of the shaft in the
usual way.
In the back part of the bench top A we cut a transverse slot or opening G into
which we fit a plate H which may be either loose and removable or may be hinged
or pivoted at one side to the bench top. The opening G extends from the saw
gap f to the back edge of the bench top and is sufficiently long to permit the
passage through it of the head of the saw shaft D and the pedestals or bearing
blocks E. The removable or adjustable plate H is of the same size as the slot
or opening G and is fitted into the opening and covers over the saw shaft D when
the table top H is raised above the shaft as shown in Fig. 4.
In front of the saw in the bench A is a gap or opening H into which is fitted
the movable or adjustable gap plate K. The gap plate K is removable and
adjustable so that it may be set nearer to or further away from the said blade For
the opposite edge h of the gap according to the thickness of the saw blade and the

page_text: set of the saw or the description of material or work under operation. The
adjustable gap plate K is held in position by the screws k. Two forms of the gap
plates K are shown in Figs. 5 and 6.
Behind the saw we place a movable strip or second adjustable gap plate L
preferably of T or L shape which can be adjusted to close or otherwise adjust the
gap behind the saw for the same purpose as that in front of the saw.
These adjustable gap plates obviate the necessity of packing for the saw and
they can be so regulated that very thin laths of wood can be cut without the risk
of getting down between the saw and the plate.
Instead of raising and lowering the bench A it may be made stationary and the
pedestals or bearing blocks E of the saw shaft D may be mounted on a inovable
platform or table so that the saw may be raised and lowered instead of the
table A.
The essential feature of our improved saw bench is that the bench top will fall
below the shaft (or the shaft rise) to admit of the centre of the saw being above
the bench thus enabling slotting tenoning and other work to be done equally and
evenly on both edges of the material.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is :-
1. A circular saw bench constructed with gaps or openings such as G and H and
removable and adjustable gap plates such as H and K substantially as described
and shown.
2. An improved saw bench constructed and arranged that the bench top will fall
below the saw shaft (or the shaft rise above the bench top) substantially as
described and shown.
3. The combination with a saw bench of the adjustable gap plates K and L
substantially as and for the purpose described.
Dated this 25th day of September 1896
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.