provements in Guards for Circular Saws.
Year: 1898

page_text: Date of Application, 23rd Aug.,
1898
PROVISIONAL DIECIFICATION
Improvements in Guards for Circular Saws.
I, EDWARD JOWETT SHACKLETON, of Pheonix Works, Hartley Street, Battinson
Road, Halifax, Firewood and Fire Lighter Manufacturer, do hereby declare the
nature of this invention to be as follows:-
To guard circular saws front and back and on both sides and top in such a
manner as to entirely prevent anyone coming in contact with the teeth of the saw.
To enable the operator to see the cut right along, to prevent the possibility of wood
flying back upon the operator, to automaticaly adapt itself to any size or shape of
timber however irregular, can be adapted to any size saw, can be fixed on any part
of the bench with two set screws, and can be swung back out of the way for the
purpose of sharpening &c. The whole is simple, cheap and nothing to get out of
order.
This invention consists of an iron standard fixed in any desired possition upon
the saw bench with two set screws, from this is carried an adjustable radiating arm
projecting over the center of the saw, through the end of this is a long screw
reaching down to top of saw and which can be raised or lowered at will to suit
different size saws.
To the bottom end of this is attached the guard proper which is in four sections
the two top sections are fixed with a hand screw and can be altered instantly to
suit any size saw. The two bottom sections are attached to the top by a rule joint
these rise and fall automaticaly as the timber enters and leaves the saw at the
bottom of these are fixed small rollers to prevent noise and concussion on dropping
on the bench when the timber passes out and to ease the passage of the timber
under them when sawing, this guard adapts itself to any size or shape of timber
however irregular.
The saw teeth are always covered yet the sawyer can see his cut all along. Both
sides, back, front and top being so thoroughly protectected that is impossible for
anyone to come in contact with the saw it cannot drive pieces back nor tip up
short boards, the guard can be adjusted to any size saw in two minutes and can be
swung back out of the way for for sharpening &c.
בד
1 1 11:00.1 dow of luoust 1898

page_text: and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This invention consists of a wrot iron standard fixed in any desired possition on
the saw bench with 2 set screws, on the top of this standard is carried an horizontal
arm adjustable and radiating (a) projecting over the centre of the saw and working
in a socket can be lengthened and shortened at will to suit different size benches.
Through the end of arm a is inserted a long screw which can be raised and
lowered instantly by either a lever nut or weel () on the top of arm a and secured
firmly with a lock nut (e) underneath at the bottom end of this screw is fixed the
guard proper which can be made of sheet steel, brass, mallable iron or other suitable
metal. It is in 4 sections marked A, B, C, & D. 3 of these sections A, B, & C have
the 2 sides back and front framed together on the top edges with thin bars and
so forms a grid or grating B & C, are hung to the bottom of screw e and secured
with a hand nut s. A&D, are hinged to and work upon the lower ends of B & C,
and are secured and regulated in a similar manner by the 2 hand nuts K, and
can be lengthened and shortened to suit different size saws by shifting from one
hole E to another. If a much smaller saw be required take off A & D, and lower
the screw c.
If still a smaller saw is required take off B shift C into the centre,
again lower the screw c and this will cover the smallest saw.
The right hand bottom section D, is not framed together on the top edge as the
others are so that when cutting thin boards the inside half can be thrown up out
of the way and the fence pulled close up to the saw.
At the bottom of A & D), are fixed india rubber rollers F. The 2 safety chains H
can be lengthened and shortened as the screw c is raised raised or lowered.
If it is required to sharpen the saw on the bench raise the screw c and turn the
guard to the back of the bench out of the way.
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 saw gard which is automatic in its action.
2. It forms a perfect guard completely covering the saw at all times.
3. Simple in construction.
4. Quick change and adjustment of all parts.