Improvements in or pertaining to Circular Sawing Apparatus.
Year: 1895

page_text: Date of Application, 16th Dec., 1895
Complete Specification Left, 16th Sept., 1896-Accepted, 24th Oct., 1898
PROVISIONAL SPECIFICATION.
Improvements in or pertaining to Circular Sawing Apparatus.
I JAMES MOGINN of Ebrington Barracks in the City and County of London-
derry Ireland Foreman of Works do hereby declare the nature of this invention to
be as follows:-
The object of my invention is to provide circular sawing apparatus with such
appliances and devices as will amongst other advantages enable light or heavy
work to be equally well performed with convenience and efficiency and with no
waste of the driving power which may be steam or other suchlike power but
perhaps preferably is manual or pedal power.
To carry out this object the circular saw spindle is mounted as is usual on a suitable
frame or bench whereon also is mounted the axle of a band wheel which can be
rotated in the ordinary manner either by a treadle or by an handle. This wheel
may be connected by a band directly with a pulley on the saw spindle but perhaps
preferably a short shaft is interposed which shaft is mounted in any convenient
position in respect of the saw bench and carries two pulleys it may be of different
diameters in which case the band from the wheel can pass round the smaller of the
two pulleys while the band of the other pulley passes round the pulley on the sav
spindle. At a convenient distance from the saw bench is mounted on a suitable
frame the axle of a large band wheel which also can be rotated in the ordinary
manner either by a treadle or as is perhaps preferable by an handle and this wheel
most conveniently is connected by a band directly with another pulley on the saw
spindle or in a similar manner a short shaft with two pulleys may similarly be
interposed. All these wheels and pulleys can obviously be made of any absolute
and relative diameters as may in each case be desired.
Therefore when heavy work is to be performed both driving gears simultaneously
can be employed to rotate the saw spindle but when light work is to be performed
either of these driving gears can be disconnected in any ordinary manner such for
example as by mounting certain of the pulleys preferably those on the saw spindle
loosely and using clutches to engage the same therewith or by slipping off and
removing one or more of the bands or otherwise.
The driving gears would be similarly arranged and fitted when steam or other
suchlike power is to be used instead of manual or pedal power.
On the end of the saw spindle which can be lengthened therefor can be fitted a
chuck or suchlike appliance to receive or carry a bit or drill and a small adjustable
table with the required adjustable guides and other devices can be provided and
mounted on the saw bench in any usual and convenient manner.
A table is fitted for the saw bench surrounding the saw as is usual and this table
is so mounted on the top of the saw. bench that it can be raised or lowered as may
be desired. To effect this object easily quickly and properly I can fit preferably
four links the lower ends whereof are pivoted in the proper positions on the frame
and pins or studs on the upper ends thereof pass through horizontally slotted
brackets fitted in the complementary positions on the table and these pins or studs
can be caused to move along the horizontal slots preferably simultaneously by a
screwed rod or rods which can be operated at the end of the bench or other
ordinary appliances can be used to actuate the links.
An adjustable fence or guide is mounted on the table near the saw which fence
can consist of two plates movably hinged together along their upper, edges and

page_text: provided near their lower edges with slotted clamping stays whereby while the one
part the back part can alway be retained in a vertical position the front part can
be maintained either in a vertical position or at any angle of inclination that may
be desired. The back part is supported in any desired position by one or more
stays pivoted thereon the tails of which stays may be slotted and adjustably secured
on the table through these slots by bolts and nuts or other usual devices may be
employed to adjustably secure these stays to the table.
The saw can be adjustably secured and in different positions on the spindle in
any ordinary manuer being provided with tapered or other washers or other usual
appliances and when desired two or more saws can be mounted on the same spindle
being in a similar manner adjustably secured thereon and provided with washers or
other appliances and thus all kinds of work can be performed on and by this saw
bench.
Dated this 16th day of December 1805
Improvements in or pertaining to Circular Sawing Apparatus.
I JAMES MCGINN of Ebrington Barracks in the City and County of London-
derry Ireland Foreman of Works 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 :-
The object of this my invention is to provide circular sawing apparatus with
such appliances and devices as will amongst many other advantages and excellences
enable light or heavy work to be equally well performed with convenience and
efficiency and with little or no waste of the driving power which may be steam or
other suchlike power but perhaps preferably is manual or pedal power or both
manual and pedal power.
In order the more clearly to explain this my invention and in what manner the:
same is to be performed I refer to the accompanying drawing wherein I have
shewn my apparatus as constructed and arranged for the utilization of both manual
and pedal power in one and perhaps the most convenient and efficient style and
manner and Figure 1 is a side elevation of the complete apparatus and Figure 2 is
a plan of the operating part of the same.
On a suitable and ordinary or other frame or bench A is mounted in any
customary manner a spindle B carrying in any convenient position a circular
saw B and according to this style of arrangement two pulleys D and D' which.
may be of different diameters and it is also most convenient to secure on this
spindle B a fly wheel B'. On the bench A in a suitable complementary position.
in respect of the saw spindle B is also mounted in any customary manner a short
shaft E carrying a band wheel F the band F' whereof passes round one and if 80.
made preferably the smaller of the two pulleys D' and an ordinary or other
treadle H properly mounted and pivoted on the bench A or elsewhere therefor is
connected by a rod H¹ with a crank E' fitted on the shaft E whereby this shaft E
can be rotated in the customary manner. At a convenient distance from this saw
bench A is erected in the proper position in respect thereof a frame K whereon is
mounted a short shaft L carrying a large band wheel M the band M¹ whereof
passes round the other and if so made preferably the larger of the two pulleys D
and on the end or ends of the shaft L is or are fitted the ordinary. crank handle or.
handles L' whereby this shaft L can be rotated in the customary manner.
When it is desired to rotate the saw at a very high speed or whenever for any
cause it may be preferred so to do and so to arrange this apparatus instead of

page_text: leading either or both of the bands F1 and M' directly from their respective
wheels F and M round the pulleys D' and D as is herein before described and as is
shewn in the drawing a short shaft may be interposed and mounted on the floor or
elsewhere in a convenient position in respect of the bench A and it may be of, the.
frame K and either or both of these bands F¹ and M' could pass round a pulley or
pulleys on this intermediate shaft which would communicate its rotation to the saw
spindle B at such increased or other rate of speed as is arranged for by. a band or
bands or otherwise in any convenient and customary or other manner.
All these wheels and pulleys can obviously be made of any absolute and relative
diameters as may in each particular case be desired and they can be geared and
connected together by bands or chains or other ordinary appliances.
Therefore when heavy work is to be performed both driving gears simultaneously
can be employed to rotate the saw spindle but when light work is to be performed
either of these driving gears can be disconnected in any ordinary manner such for
example as by mounting certain of the pulleys preferably perhaps those on the saw
spindle loosely and using clutches to engage the same therewith or by slipping off
and removing one or more of the bands or otherwise.
The driving gears would similarly or in a proper corresponding or complementary
manner be arranged and fitted when the manual and the pedal power is to be
transposed or when steam or other suchlike power is to be used instead of manual
or pedal power as may be convenient and suitable in each particular case.
The saw can be adjustably secured and in different positions on its spindle in any
ordinary manner being provided with tapered or other washers or other usual
appliances and devices and when it may be desired so to do two or more saws can
be mounted on the same spindle being in a similar manner adjustably secured
thereon and provided with washers or other appliances and devices and thus all
kinds or many kinds of work can be performed on and by this saw bench.
A suitable table N preferably of metal and of the desired size and shape is fitted
on the top of the saw bench A surrounding the saw B¹ as is usual and when made
of metal this table N can have the customary hard wood block. N¹ fitted therein
immediately surrounding the saw B₁ and this table N is most conveniently so
mounted in any appropriate and ordinary or other manner on the bench A that it
can be raised and lowered and maintained at such an height thereabove as may be
desired. I shew in the drawing one very suitable and efficient manner of effecting
this object. On the sides of the top bars A¹ of the frame A are fitted preferably
four links P two only being shewn in the drawing the other two being corre-
spondingly fitted under and at the opposite edge of the table N. The lower end
of each link P is pivoted in the proper position on the bar A' and a pin or stud P¹
on the upper end of each link P passes through an horizontally slotted longitudinal
bracket R fitted therefor in the proper complementary position on the underside of
the table N. These pins P¹ can be caused to move along the slots in these
brackets R preferably simultaneously in order to maintain the horizontality of the
table N by connecting the same to a bar T which can be caused to slide or move
longitudinally on the underside of the table N in the customary manner by a
screwed rod T¹ operated at the end of the bench A by an handle T and a bar T
with its screwed rod T¹ may be similarly fitted under the opposite edge of the
table N for the other pair of links P or one bar T may be connected with both
pairs of links P in a similar manner or other ordinary and suitable appliances and
devices can be fitted and used to actuate the links P as may be convenient and
appropriate in each particular case.
Any suitable and ordinary or other dovetailed or undercut or plane grooves and
slots and similar devices may be provided and created in and through the table for
convenience of fitting and using fences or guides or suchlike appliances as are
customary and appropriate in this class of apparatus or as may in each particular
case be desired.
On the end of the saw spindle B which may if necessary or convenient be
lengthened therefor can be fitted a chuck V or other suchlike device to receive

page_text: and carry a bit or drill or other desired appliance for boring or drilling purposes or
the like.
As is herein before stated and as is indeed customary various devices and
appliances are most conveniently provided for and used with this apparatus
herein before described to render it properly capable of performing its work and
especially to ensure that this work shall certainly and surely efficiently and
regularly be performed and I shew in the drawing many and various views of
devices and appliances such as I prefer to use for this purpose and to which I will
I now refer by numbers.
With the chuck V hereinbefore described a small adjustable table is evidently
very greatly to be desired. 2 is a section and 3 a side elevation of a dovetailed
socket plate which can be secured vertically on the side of the bench A and
wherein can slide a bracket 4 capable of being clamped therein at the desired
elevation by a set screw 5. 6 is a plan 7 a side elevation and 8 a section of a table
carried on and by the bracket 4 in which table is longitudinally made an undercut
groove 9 and this table is so arranged in respect of the bench A that this groove 9
is in continuation of the line of the saw spindle B or is parallel with such line.
10 is a plan of a base plate which is mounted on a dovetailed bar 11 being centrally
pivoted thereon by a pivot 12 so that it can be turned thereon and this dovetailed
bar 11 can be inserted in the undercut groove 9 in the table and can be caused to
slide along the same. 13 is an elevation of a fence which is erected on and across
the centre of the base plate 10 in the position shewn at 14 and 15 is a section of
the fence and 16 is a section of the base plate and its pivot and centrally in the
fence 13 is most conveniently made a deep recess 17. Suitable screwed or other
holes can be made in the proper relative positions in the dovetailed bar 11 and
clamping screw or other bolts 18 can pass through semicircular or curved slots 19
made therefor in the base plate 10 into these holes in the bar 11. By this
arrangement and construction of parts it is obvious that the article to be treated
can be presented to the tool in the chuck V in any position and at any angle
being held in and by the recess 17 in the fence 13 for boring or drilling or
otherwise as may in each particular case be desired.
When this article is very hard and tough and especially when it is made of
metal it may be pressed against the tool in the chuck V by a screw 21 fitted at
and to the back of the fence 15 and working through and engaged in a boss 22
with a female screw fitted on the end of the table 7.
23 is an elevation of a fence which can be erected on the edge of a base
plate 24 and 25. is a section of the fence and the base plate which perhaps
preferably are secured together rigidly in this rectangular position although they
may also be hinged together when the fence could be supported in any ordinary
manner in the desired position by slotted stays or other usual appliances. The
base plate 24 is mounted it may be near one end of a dovetailed bar 26 by a
pivot 27 so that it can be turned thereon and this dovetailed bar 26 can be inserted
in an undercut groove W made therefor in the table N and can be caused to slide
along the same. A bolt can be fitted on the dovetailed bar 26 in the proper
relative position which can pass through a semicircular or curved slot 28 made
therefor in the base plate 24 and the end thereof is provided with a winged or
other clamping nut 29. By this arrangement and construction of parts it is obvious
that the article to be treated can be presented to the circular saw B'in any position
and at any angle being held against the fence 23 for producing mitres or otherwise
as may in each particular case be desired.
It is obviously desirable even if it be not absolutely necessary that the table N
when it is raised in manner as is herein before described off the bench A should be
so lifted in a directly vertical line and to ensure that this shall certainly be
done a socket plate 30 can be secured on the side of the frame A wherethrough
can somewhat loosely pass a vertical bolt 31 the head 32 whereof can be secured
on the underside of the table N in the proper corresponding position and two or
more of these bolts 31 with corresponding sockets 30 can be provided in such
1.

page_text: positions on the underside of the table N and on the sides of the frame A as may
in each particular case be desired.
I have thus described and I have shewn in the accompanying drawing as is
hereinbefore stated what I consider to be a most convenient and efficient style and
manner of construction and arrangement of this my circular sawing apparatus and
of the several parts thereof and of the devices and appliances to be used therewith
but it is obvious and I would have it clearly understood that I do in no wise limit
myself exactly and precisely thereto for this apparatus and all the several parts
thereof and the devices and appliances to be used therewith may be made of any
suitable material and in any convenient and ordinary or other style and size and
shape and may be fitted and arranged in any appropriate and customary or other
manner as may be suitable or expedient or necessary in each particular case
having regard to the work that is to be performed on and by the apparatus the
material that to be so worked the quality size and shape of such material the
power that is to be used to drive the apparatus and the other surrounding
circumstances.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The arrangement and combination of parts and appliances constituting my
improvements in or pertaining to circular sawing apparatus substantially as
hereinbefore described and shewn in the accompanying drawing.
Dated this 18th day of September 1996
HART & Co.,
168, Fleet Street, London, E.C., Agents.