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, near Man-
chester, Builders and Contractors, do hereby declare the nature of our said inven-
tion to be as follows:-
-
This invention relates to and consists of one or more saws mounted upon a
revolving shaft and capable under the action of suitable mechanism of moving
to-and-fro on said shaft, whilst in motion, and of thus effecting a broad cut in
any object fed against them.
The separate saws, or sets of saws for operating on different kinds of work
may be on one shaft, and each be operated simultaneously, or otherwise, with
facilities for using them as ordinary saws if required.
For giving the aforesaid endwise traverse, we may employ one or more cams
with a wavy groove, engaging with fixed bowls or other suitable means.
200
1
T1000
A. G., A. R., W. R., and J. BULLIVANT,
By John G. Wilson & Co.,
Patent Agents to the Applicants.
Improvements in Sawing Machines.
We, AMOS GEORGE BULLIVANT, AMOS REED BULLIVANT, WILLIAM REED
BULLIVANT, and JOHN BULLIVANT, all of Moston Lane, Harpurhey, near Man-
chester, Builders and Contractors, do hereby declare the nature of this inven-
tion 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 one or more saws mounted upon a
revolving shaft and capable under the action of suitable mechanism of moving
to-and-fro on said shaft, whilst in motion, and of thus effecting a broad cut in
any object fed against them.
The separate saws
or sets of saws for operating on different kinds of work
may be on one shaft, and each be operated simultaneously, or otherwise, with
facilities for using them as ordinary saws if required.
For giving the aforesaid endwise traverse, we may employ one or more cams
with a wavy groove, engaging with fixed bowls or other suitable means.
On the acompanying drawing we shew in Fig. 1 a machine embodying our
invention, and as adapted more especially for use in the "hanching" of the parts of
doors and the like.

page_text: In Fig. 2 we shew a modification.
Upon a table (A) we mount a set of bearings (B) and in such bearings a
shaft (C). Upon this shaft we mount two sets of saws (D) and (E) and fix and
hold them apart by means of collars (F) and nuts (G). Upon the length of the
shaft we also mount a fast pulley (H) and a track cam (1). Adjacent to the
cam and taking into the groove of such cam we mount a fixed bowl (J).
With the rotation of the shaft (C) it will readily be seen that by reason of
the cam and bowl the shaft, and the saws mounted on it, will be given a short
to-and-fro endwise movement.
With a piece of wood fed against the saws in a direction at right angles to
the shaft, and such saws rapidly rotating, each saw will cut a broad gap in
the wood equal to the lateral traverse of the shaft, and with the distance between
the same slightly less than the traverse of the shaft it will also be seen that
the combined cutting action of say the set of three saws (I)) will produce a gap
which is about three times as wide as the gap cut by the single saw.
With the
set of two saws (1) it will be about twice as wide as the gap cut by the single saw.
To avoid excessive wear of the cam (I) under the high speed at which it will
require to rotate if on the shaft (C) we may mount such cam on a side shaft (K)
rotating at a slower rate and impart the endwise movement to the shaft (C)
through a lever (L), as shewn in Fig. 2.
If desired we may divide the shaft (C) and provide a separate cam action
for each part, and by placing a fixed collar on the shaft and removing the
bowl (J), or the lever (L) we may adapt the machine for ordinary use.
Whilst the class of work for which our invention is more particularly intended
is the "hanching" of the parts of doors at one operation it may be used for other
purposes.
For varying the width of cut we vary the traverse of the shaft, or increase,
or decrease the number of saws.
or
To facilitate the feeding of the wood to the saws we provide a table
bench (M) for each set of saws, which is fitted with a fence, and is, by preference,
capable of rising and falling, and of being adjusted in like manner to the tables
described in the Specification of Application for Patent No. 13470 A.D. 1899.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
1: In sawing machines, a saw, or saws, mounted upon a shaft, means (such
as a track cam) for giving such shaft a lateral to-and-fro traverse, and means
for guiding the objects to be cut in a path at right angles to the shaft, sub-
stantially as and for the purposes herein set forth.
2: In sawing machines, the arrangement and combination of parts herein
described and illustrated in Fig. 1 (or the modification shewn in Fig. 2) of the
accompanying drawing.
Dated this 28th day of March 1900
AMOS GEORGE BULLIVANT.
AMOS REED BULLIVANT.
WILLIAM REED BULLIVANT.
JOHN BULLIVANT.
By John G. Wilson & Co., Fels. I.P.A.,
Agents for Applicants, 55, Market Street, Manchester.