Improvements in Sawing Machines.
Year: 1899

page_text: Date of Application, 29th June, 1899
Complete Specification Left, 29th Mar., 1900-Accepted, 23rd June, 1900
Improvements in Sawing Machines.
We, AMOS GEORGE BULLIVANT, AMOS REED BULLIVANT, WILLIAM REED
BULLIVANT and JOHN BULLIVANT, all of Moston Lane, Harpurhey, Manchester,
Builders and Contractors, do hereby declare the nature of our said invention to
be as follows:-
This invention relates to and consists of an arrangement of circular saws
mounted upon a revolving shaft and so set at an angle, relatively to such shaft,
that upon being rotated they have a wobbling" action, and upon a piece of
wood being fed to the edges of the saws, at right angles, or approximately at
right angles, to the shaft, a wide slot or gap is cut in the wood.
As applied for wood sawing the shaft is mounted, by preference, on a table, or
bench, in suitable bearings, and between each set of saws, and surrounding the
shaft, is a collar adapted to hold the saws at an angle, and interchangeable with
collars of varying widths to suit the size of gap to be cut, and when in position
the saws and collars are held firmly by end nuts screwing on the shaft, or on
a bush on such shaft.
There may be two or more sets of saws on one spindle for the same, or different
kinds of work. Upon the top of the bench and adapted to guide the work to the
saws is a fence or fences.
The chief use of our invention is for hanching the parts of doors, and like
objects connected by tenon and mortice, or for cutting a wide groove, or grooves
of varying widths which have heretofore necessitated two cuts of a saw, and then
to be transferred to a bench and the intervening portion cut away by a chisel.
For varying the distance between the saws without removing the collars we
may employ an arrangement of adjustable collars or packing, but for affording
end solidity we prefer the collars to be threaded on, the spindle being removable
from its bearings for the purpose.
In some cases we may use one saw only, and
manner of a saw mounted in the ordinary way.
of saws in touching, or almost touching contact.
tion to saws working to-and-fro by setting the
motion.
Dated this 90th don of Tun 1900
set the teeth to act after the
We may also group a series
We may also adapt our inven-
saws at an angle to the line of
AMOS GEORGE BULLIVANT,
AMOS REED BULLIVANT,
WILLIAM REED BULLIVANT,
JOHN BULLIVANT.
By John G. Wilson & Co.,
Patent Agents to the Applicants.

page_text: We, Amos GEORGE BULLIVANT, AMOS REED BULLIVANT, WILLIAM REED
BULLIVANT and Jous BULLIVANT, all of Moston Lane, Harpurhey, near Man-
chester, Builders and Contractors, 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 relates to and consists of an arrangement of circular saws
mounted upon a revolving shaft and so set at an angle, relatively to such shaft,
that upon being rotated they have a "wobbling" action, and upon a piece of
wood being fed to the edges of the saws at right angles, or approximately at
right angles to the shaft, a wide slot or gap is cut in the wood.
On the accompanying drawing Fig. 1 is a front elevation and Fig. 2 a side
or end elevation of a machine embodying our invention.
Fig. 3 illustrates certain details in section.
Figs. 4, 5, 6 and 7 illustrate various kinds of work our invention is intended
to effect, whilst Fig. 8 illustrates the action of our invention.
Upon a suitable table or bench (A) we mount a set of bearings (B), (B),
and in such bearings we mount a shaft (C). This shaft we provide with screw
threads at (D) and (E), and on such shaft we mount two sets of circular saws (F)
and (G).
Also upon the shaft (C) and alongside and between the saws
of each set we mount a set of collars or sleeves (H), and a set of nuts (I), (I)
and (J), (J). The order and manner of fixing the set of saws (F) is as follows:-
The nut (I) is first screwed on to the shaft at (D) until it reaches the bearing (B).
The collars (H) and saws are then placed on the shaft alternately as shewn, and
finally the nut (I) which on being tightly screwed up securely clamps the collars
and saws against the nut (I), and secures them firmly on the shaft (C).
The other set of saws (G) is secure to the shaft (C) in precisely the same manner.
Each of the collars (H) between the saws is slightly bevilled on its ends, and
when on the shafts such ends lie at an oblique angle to the shaft. One end of
each of the collars between the saws and the clamping nuts is also bevilled to
a corresponding angle, so that when the saws are clamped between such collars
they are caused to lie at an oblique angle to the shaft (C) as illustrated in Figs. 1,
3 and 8. In Figs. 3 and 8 the degree of angularity is slightly greater to shew
the angle more clearly.
Upon the shaft we also place a pulley (K) by which the shaft and saws are
rotated. At the front of the bench we provide tables (L) with fences (M),
upon such tables the wood to be cut is placed and fed to the saws.
and
With the saws mounted at an oblique angle as aforesaid their action in rotating
is to alter their repose from left to right, or vice-versa, of the vertical with each
half-revolution, and thereby produce a "wobbling" movement so that on a piece
of wood being fed against the edges of the saws in a direction at right angles
to the shaft each saw cuts a gap in the wood equal in width to the amount of
its wobble" or movement in changing from right to left, and left to right.
With the space between the saws slightly less than the angle of the saws, or
width of cut, the gap cut by each saw runs into or overlaps the gap or gaps
adjoining, and with say the set of three saws (F) a gap is produced such as is
shewn in Figs. 4 and 5, whilst with say the set of two saws (G) a gap is pro-
duced such as is shewn in Fig. 6. For still narrower gaps, such as is shewn in
Fig. 7, a single saw may be used, and for wider gaps four or more saws may be
used In Fig. 8 we shew the saws (by full and dotted lines) in their alternate
positions for each half-revolution, and we thereby also shew the width of cut

page_text: for each saw and the manner in which it overlaps the cut of the adjoining saw,
and helps to produce the full width of gap.
The method heretofore prevailing for "hanching" the parts of doors is to employ
a single saw, make two parallel cuts, and then transfer the work to a bench to
have the intervening part of the wood cut away by a hand chisel. By our inven-
tion the operation of "hanching" can be done at one operation.
By the substitution of collars (H) of different widths or bevil, different sizes
of gaps may be cut, or the variation may be effected by the introduction of
angular washers between the outside collars and the nuts.
To give the end of the gap a square finish, and to avoid all hand treatment
as far as possible, we mount the tables (L) in slides (N), and provide each table
with a lever (0) to which it is linked by links (P), and by which it can be raised
or lowered so as to allow the wood-work to be given a vertical movement against
the saws when the end of the gap is reached, and thus ensure of a square (instead
of a rounded) shoulder. When not being raised or lowered the tables are sup-
ported upon screws (Q) carried by fixed brackets (R), and upon each screw is a
hand-wheel (S) by which each table can be adjusted in relation to the saws.
The levers (0) pass through openings in the front of the table (A).
To make the machine additionally useful we may provide it with an ordinary
mounted saw (T) and table (U) for ordinary working, and we may also provide
it with a drill (V) and table (W).
Having now particularly described and ascertained the nature of our said
invention we wish it to be understood that we do not confine ourselves to the
exact method of and means hereinbefore described for mounting the saws and
obtaining the desired angle, nor to the exact style of table or bench used herewith
as the same can be varied without departing from our invention, and what we
claim is:
1: In sawing machines, a saw, or set of saws, mounted upon a shaft at an
oblique angle to such shaft and means for supporting and guiding objects to be
cut against such saw or saws in a path at right angles to the shaft, substantially
as and for the purposes herein set forth.
2: In sawing machines, a set of two or more saws arranged on a shaft parallel
to each other, and at an oblique angle to the shaft, and so spaced as for each to
overlap the cut of the next adjoining saw or saws, substantially as and for the
purposes herein set forth.
3: In sawing machines, the arrangement and combination of parts sub-
stantially as herein described and illustrated in full lines, or in full and dotted
lines, in Figs. 1 and 2 of the accompanying drawings.
4: In means for holding a saw, or set of saws at an oblique angle to a
screwed shaft, a set of bevilled collars or washers and a set of clamping nuts, as
set forth.
Dated this 28th day of Vorah 1900
AMOS GEORGE BULLIVANT,
AMOS REED BULLIVANT,
WILLIAM REED BULLIVANT,
JOHN BULLIVANT.
By John G. Wilson & Co., Fels. I.P.A.,
Agents to the Applicants, 55, Market Street, Manchester.