Improvements in Guarding Circular Saws.
Year: 1895

page_text: Date of Application, 8th Jan., 1895
Complete Specification Left, 23rd Sept., 1895-Accepted, 9th Nov., 1895
PROVIDIUNAL DI MULTICATION.
Improvements in Guarding Circular Saws.
1, GEORGE SEABORN PARKINSON of Leinster Lodge No. 889 Fulham Road,
London, Gentleman (late of No. 2 Lilyville Road) do hereby declare the nature of
this invention to be as already detailed in my Patent No. 379 and bearing
date Jany. 8th 1892 and I now desire to further specify the use of wirework,
perforated metal or other strong openwork material for the construction of the
guards. Also that the lifting arrangement may be varied by suspending a bar
from any fixed point, which bar is acted upon by the advancing wood and so lifts
the front guard to any height required. Or by an angular piece attached to the
front of the guards, or by chains attached to and holding up their respective
guards, counterpoises, springs or rubber stops can also be used for easing the drop
of the guards.
Dated this Eighth day of January 1895.
GEORGE SEABORN PARKINSON.
Improvements in Guarding Circular Saws.
I, GEORGE SEABORN PARKINSON of Leinster Lodge, No. 889 Fulham Road,
London, Gentleman (late of No. 2 Lilyville Road) 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 :-
As detailed in my Patent No. 379, but from which I new desire to vary and
improve my arrangements by the use of wirework, perforated metal or other strong
openwork material for the construction of double hinged guards, it being essential
that the workman should freely see his saw, instead of its being hid by the use of
any other material.
Also that the guards A may be suspended from a crossbar B attached to a
support C on the bench or floor or from a wall bracket or from a bar from the
ceiling above or other convenient point.
Further that the lifting arrangement may be varied from the particular form
indicated in the sketch which accompanied my previous Specification, by the
attachment of a projecting piece D from the foot of the front guard, which
projection is acted upon by a curved or other convenient shaped bar,-which I call
a "lift" E working from an attachment F to the bench or fence or other point,
and thus on the pressure from the advancing wood, it is caused to pass under the
projection and so to lift the guard. (No. 1.)
Or it may hang from a bar G fixed over the frout guard, the lift being also
attached at its lower end to the bottom of the guard and working in conjunction
with it, by means of a slotted guide H, which keeps it effectually in position
without any possibility of its touching the saw. (No. 2.)
If preferred for small saws an angular lift I may be attached permanently to the
guard and being raised by contact of the wood, it lifts the guard as may be desired.
NAE 7 & 8 1

page_text: The foregoing automatic arrangements may be dispensed with, and in place
thereof chains J or other substitute may be employed to hook the guards up by
means of a "catch" K above and at any height required, the wood passing freely
under without contact and the saw being still under protection. (No. 1.)
Finger guards L which expand and close as shown in the sketches may be used
if desirable. (Nos. 3 & 4.)
Springs or rotating rubber stops M (No. 5) or counterpoises N (No. 6) may be
used to ease the drop of the guards.
The screen O at the side of the guards may be brought lower down to cover
different sized saws.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, 1 declare that what
I claim is
1st. The use of wirework or other openwork material in the construction of the
double hinged guards.
2nd. The special forms of "lifts "as shown in my accompanying outline sketches,
subject to such modificatious as may suit the particular beuch upon which they may
be fixed.
3rd. The use of chains or other substitute for holding up the guards.
4th. The use of rubber stops, springs or counterpoises as specified.
5th. The application of finger guards as illustrated or any modification of the
same.
Dated this Twenty-third day of September Eighteen hundred and ninety-five.
GEORGE SEABORN PARKINSON.