Improvements in Fences and Guards for Circular Saws, applicable to other Machines.
Year: 1898

page_text: Date of Application, 5th Aug.,
1898
PROVISIONAL SPECIFICATION.
Improvements in Fences and Guards for Circular Saws, applicable
to other Machines.
I, ALFRED JOHN ANDREWS, of Totton Steam Saw Mills, Totton, in the County
of Southampton, Timber Merchant, do hereby declare the nature of this invention
to be as follows:
This invention has for its object to provide a simple and effective fence and
guard for circular saws adaptable to suit different sizes of saws, and other
machines.
According to this invention there is provided a fence and guard that not only
protects the workman employed at the saw, or other bench, or table, but at the
same time provides a secure fence to guard persons passing by from coming
in contact with the saw, or other machine.
In carrying out my invention under one form, I provide a bar fence over the
top, and at the open or front side of the saw, this fence is carried by an upright
frame or members fitted at the back of the table or bench. The bar fence consists
of a frame of bars hinged to the upright frame or members so that it will when in.
position stand out at right angles therefrom horizontally over the circular saw, to
this horizontal frame there is hinged a second frame, also of bars adapted to hang
or depend vertically or nearly vertically from the front edge of the first frame so
that its lower edge will come against, or rest on the outside edge of the table,
and when in position the horizontal, and vertical frames form a top and side
fence to the saw.
In connection with the horizontal frame, and just over the saw, I provide an
adjustable metal guard that can be adapted to suit different sized saws, this metal
guard, under one form, consists of two members held to the underside of the
frame by a screw bolt, and hand nut, the members being longitudinally adjustable
by means of slots therein.
saw,
The ends of the members are bent or curved to come over the edge of the
and the front member can be adapted to suit any size of timber to be cut.
The fence and guard under this invention does not in any way obstruct the
workman, as the saw is always in his full view, at the same time it affords full
protection, not only to the workman, but also to persons passing by the machine.
When required for any purpose the pendent part of the fence can be folded
back, or the whole fence can be folded back on its supports so as to leave the saw,
and table clear.

page_text: Improvements in Fences and Guards for Circular Saws, applicable
to other Machines.
I, ALFRED JOIN ANDREWS, of Totton Steam Saw Mills, Totton, in the County
of Southampton, Timber Merchant, 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 has for its object to provide a simple, and effective fence and
guard for circular saws adaptable to suit different sizes of saws, and other
machines.
According to this invention there is provided a fence and guard that not only
protects the workman employed at the saw, or other bench, or table, but at the same
time provides a secure fence to guard persons passing by from coming in contact
with the saw, or other machine.
In carrying out my invention, I provide a bar fence over the top and at the
open or front side of the saw, this fence is carried by an upright frame, or members
fitted at the back of the table or bench. The bar fence consists of a frame of bars
hinged to the upright frame or members, so that it will when in position stand out
at right angles therefrom horizontally over the circular saw, to this horizontal frame
there is hinged a second frame, also of bars adapted to hang or depend vertically
or nearly vertically from the front edge of the first frame so that its lower edge
will come against, or rest on the outside edge of the table, and when in position
the horizontal, and vertical frames form a top and side fence to the saw.
In connection with the horizontal frame, and just over the saw, I provide an
adjustable metal guard concentric with the saw, or approximately so, that can be
adapted to suit different sized saws, this metal guard consists of two members held
to the underside of the frame by a screw bolt, and hand nut, the members being
longitudinally adjustable by means of slots therein, and also vertically adjustable.
The ends of the members are bent or curved to come over the edge of the
saw, and the members can be adapted to suit any size of timber to be cut, and be
provided with hinges to enable them to be moved to a greater or lesser distance
from the saw, or turned up and held away from the saw, the back member can be
constructed as a blade for use when sawing deals.
The fence and guard under this invention does not in any way obstruct the
workman as the saw is always in his full view, at the same time it affords full
protection not only to the workman, but also to persons passing by the machine,
and when sawing logs, or tree trunks by preventing knots from flying about.
When required for any purpose such as changing saws the pendent part of the
fence can be folded back, or the whole fence can be folded back on its supports so
as to leave the saw and table clear.
The hinged fence of bars can be adapted to suit tool benches of various kinds as
well as circular saw benches.
Having thus generally described the object, nature, and effects of my invention,
I will now proceed to describe it with reference to the sheet of accompanying
drawings.
The example of apparatus which I have illustrated is an arrangement, and
construction of parts according to this invention applied to a circular saw bench to
which it serves as a fence and guard.
In the various figures the same parts are designated by the same letters, and
they correspond with those used in the following explanation:―
Figure 1, shows a front elevation of the apparatus,

page_text: 10 ап сци
party in section, and
Figure 3, is a plan of the same,
Figure 4, shows the guard removed from the fence,
Figure 5, shows a section of the guard, and
Figure 6, shows a blade to be used as the back member of the guard when sawing
deals.
Referring to the drawings A designates the saw bench, and B the circular saw,
C is the saw fence, D are the driving pulleys.
It
Under my invention I provide a bar fence, and a saw guard over the bench A.
The fence may be of wood or metal, I have shown it constructed of wood.
consists in the example shown of two upright members a fixed at the back of the
bench A just behind the saw C, supported on, and hinged to the members a by the
bar a¹ there is a frame b composed of two arms & provided with a cross bar 2 that
serves as a stop to keep the arms at right angles to the members a, and in a
horizontal position over the bench, these arms are provided with bars c spaced
apart and with the arms form the frame b, to this frame there is attached by
hinges da second frame e composed of the members f, and bars h, this frame e
depends vertically from the frame b so that its lower edge will come against
or rest on the front edge of the bench A. The frames 6 and e when in position
form a fence to the saw C, or other moving tool on the bench. The position of
the frames and e can be raised or lowered by moving the carrying bar a¹ into the
holes a² or a³ on the members a. The bars of the frame bare loose and hinged to
the next bar, and form a gate through which a gas jet may be inserted under the
frame b.
Under my invention as applicable to circular saws the saw guard or shield is
attached to the underside of the horizontal frame b above described, and is free
to be moved with the frame b. With reference more particularly to Figures 4.
and 5 of the drawings, the saw guard consists of two curved members i, k, of concave
form which are mounted just over and concentric with the saw B, and carried by an
adjustable bridge consisting of two members 1, to which the members i, kare
adjustably connected by the vertical bars i, . The bars, k, and the parts 1,11
are provided with vertical slots, and are fixed in the desired position by bolts and
nuts as shown, the members, are also provided with slots through which a
bolt m having a hand nut m¹ passes, this bolt m secures the parts, to the
cross bar 63 of the frame b, and the members are adjustable horizontally thereon
as shown. The parts i, k forming the saw guard are preferably hinged at 2, so
that they can be raised from the saw when required, this may be done by cords
attached to their lower ends. The members i, k can be raised or lowered to suit
different sizes of saws, or interchangeable members having greater or less radius
may be used. The hinge k² of the member k has a moveable pin whereby the
member may be removed when sawing deals, and the blade member shown in
Figure 6 used in its place, or the blade may be bolted to the part 1, this
member is employed to keep open the saw cut when sawing deals On the
bench A and extending at an angle from the saw I provide a fence n this fence
moves short pieces of timber from the back of the saw and keeps them from
coming in contact with the member k.
Amongst other advantages, the fence and guard under my invention provides
protection to persons passing the machine, and the bar fence acts as a guard when
sawing logs of timber, or tree trunks by preventing knots which may be thrown out
by the action of the saw from flying about.
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. A fence and guard for circular saws, constructed, substantially as herein
described, that is to say, a fence and guard consisting of a horizontal frame carried
by and hinged to vertical supports, and adjustable in its horizontal plane over the

page_text: saw bench, a vertical pendent frame carried by and hinged to the horizontal frame,
and adapted to fence the front of the saw bench, a guard consisting of adjustable
members arranged over and concentric, or approximately so, with the saw carried
by the hinged horizontal frame, and adapted to be moved away from the saw with
the frame, as herein set forth.
2. As a fence for protecting a rotating or other moving part of a bench tool,
the combination of a horizontal frame carried from a vertical support, and adapted
to cover the bench as herein set forth, and a vertical frame hinged to and pendent
from the horizontal frame, and adapted to fence the front of the bench, both frames
being able to be turned on their hinges away from the bench, as herein described.
3. In a guard for circular saws the combination of adjustable parts substantially
as herein set forth with reference to Figure 4 of the drawings consisting of the
horizontally adjustable carrying members,, the vertical adjustable members it, k¹,
and the hinged curved saw covering members i, k, as described.
4. The herein described fence, and guard for circular saws, constructed, arranged
and adapted to operate substantially in the manner as, and for the purposes set
forth, with reference to the annexed drawings.
FREDERICK J. CHEESBROUGH, Fel.Chart. Inst. P.A.,
Grant and Maddison's Bank Buildings, Canute Road, Southampton,
Applicant's Agent.