An Improved Mitre Cutting and Shooting Block.
Year: 1895

page_text: Date of Application, 9th July, 1895-Accepted,' 10th Aug., 1895
COMPLETE SPECIFICATION.
An Improved Mitre Cutting and Shooting Block.
I WILLIAM OLIVER BAILEY of the Excelsior Works Wenlock Road in the
County of London Glass Merchant Silverer and Beveller, 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 an improved mitre cutting and shooting block and its
object is to obtain a block which shall be suitable for cutting mouldings or the like
with or without the use of a circular saw in such a manner as to produce any mitre
angle or bevel likely to be required and also for shooting the same and which shall
be provided with suitable means for securing the moulding in its place during the
cutting or shooting so as to dispense with any necessity for holding it by the hand
and which shall have its wearable parts made easily and cheaply renewable. It is
an improvement upon the invention protected by my Letters Patent No. 15332 of
1894 in respect of the manner of determining and fixing the angles at which the
guide blocks and auxiliary guide blocks are to be adjusted, of constructing the
sliding blocks of fastening the moulding during the cutting or shooting process and
in other respects which will appear from a comparison of the two inventions and
further in that means are provided for using my present invention in connection
with a circular saw and saw bench.
In carrying my invention into effect I construct the block as follows: and
first proceed to describe it as constructed when it is not intended to use a
circular saw.
I take a bed plate which is preferably of wood but may be of any other suitable
material and which is preferably about three feet by, one foot in dimensions but
which may be of any other required dimensions and which is provided with a
raised platform extending throughout its length. If the raised platform is of wood
or other soft material I let into it a slotted metal plate. extending throughout its
length along its inner edge. Upon and close to the inner edge of this raised
platform I mount two moveable blocks of wood or other suitable material one
immediately to the right and the other immediately to the left of a line drawn
transversely across the centre of the bed plate so as to form right and left side
guide blocks for cutting and shooting mitres and bevels. Each of these blocks is
mounted by a bolt and fly nut at the end nearest to the inner edge of the raised
platform and is left free at the outer end so as to swing on the bolt and be
adjustable to any angle likely to be required. When so adjusted the block is
secured in position by means of a bolt which passes through a hole pierced in the
outer end of the block and works in and under a slotted metal quadrant plate
which is let into the raised platform and may be marked with a scale to denote the
angle. The bolt is held in position by a fly nut at the top. Also upon and close
to the inner edge of the raised platform I mount two other moveable blocks of
wood or other suitable material one to the right of the right side guide block and
the other to the left of the left side guide block. Each of these blocks is made to
slide in a direction parallel to the edge of the raised platform and in a line
therewith by means of a bolt which passes through a hole pierced in the outer
end of the block and works in and under the slot in the metal plate let into the
inner edge of the raised platform. The bolt is held in position by a fly nut at the
top. To each of the two sliding blocks is attached by means of a bolt and fly nut

page_text: "
(which bolt also works in and under the slot in the metal plate let in the inner edge
of the raised platform) at the end thereof nearest to the centre of the bed plate
an auxiliary guide block which swings on the bolt and is adjustable so as to lie
parallel with the right or left side guide block as the case may be and to form with
such guide block a guide for the saw when cutting or for the moulding when
shooting. When so adjusted the auxiliary guide block is secured in position by
means of a quadrant iron fastened at one end by means of a bracket and bolt or
rivet to the outer side of the auxiliary guide block and working on a thumbscrew
which passes into a bracket attached to the corresponding side of the sliding
block.
In order to enable the block constructed as aforesaid to be used for cutting as
well as for shooting the joint or bevel I provide a moveable platform which
corresponds in length and width with the part of the bed plate not covered by the
raised platform and which when in position fits thereon and being slightly greater
in depth than the raised platform raises the surface of the portion of the bed plate
on which it is fitted to a slightly higher level than that of the raised platform.
The moveable platform is made detachable from the bed plate but it is easily
attached thereto by means of a tongue running along the front side of the moveable
platform and made to fit under a rebate in the raised platform. When in position
it is secured there by hooks attached to the outer edges of the bed plate which
engage with studs in the outer edges of the moveable platform and similar hooks
and studs or clips may be employed on the front side of the bed plate and moveable
platform or any other suitable means of fastening may be employed. When the
block is intended to be used for shooting the joint or bevel the moveable platform
is taken off the bed plate and removed and the moulding is placed between the
guide block and auxiliary guide block on the right or left side as required.
For the purpose of holding the moulding firmly against the guide blocks and
auxiliary guide blocks during the cutting precess I provide a pair of horizontal
clamps let into the moveable platform and worked with thumbscrews.
For the purpose of holding the moulding firmly down on the raised platform
during the shooting process I provide a pair of vertical clamps each of which is
worked by a thumbscrew and is attached to one or other of the guide blocks or
auxiliary guide blocks by means of a block of metal through one end of which
passes the thumbscrew which works the clamp and the other end of which is
pivoted to the guide block or auxiliary guide block by a bolt and fly nut.
I now proceed to describe the construction of the block when it is intended for
use in connection with a circular saw and saw bench.
When the block is intended for use in this way no moveable platform is provided and
the block is made without the part of the bed plate on which the moveable platform
would rest so that it in fact simply consists of the part which has previously been
described as the raised platform together with the guide blocks auxiliary guide
blocks and sliding blocks thereon and the other appurtenances of the same as
hereinbefore described.
}
The block is intended to be mounted on and used with any ordinary circular
saw bench and in order to enable it to travel along the bench I mount it by means
of dovetailed runners on an under bed plate attached to the bench so that the
under bed plate remains still while the block moves and I further assist the move-
ment of the block by the use of rollers which run on the under bed plate. I als
place rollers along the back edge of the block for the purpose of preventing
friction. I find it convenient to widen the block when used with a circular saw
but this is not essential. I prefer to use a hollow ground circular saw for ordinary
cutting and a special saw for very fine joints. The saw can be worked either by
the foot or by steam. It is obvious that when the block is used in conjunction
with a circular saw it is equally well suited to square cutting as it is to angle
cutting.
In order that my said invention may be more fully understood there are
annexed hereto three sheets of drawings illustrating the same of which the first

page_text: sheet illustrates my said invention when no circular saw is used the second
illustrates the same when a circular saw is used and worked by the foot and the
third illustrates the same when a circular saw is used and worked by steam.
The same letters of reference are used throughout all the figures to indicate the
same or corresponding parts of the blocks but only the parts of one side of the
block are lettered inasmuch as the parts on both sides of the block exactly
correspond.
G is the bed plate.
Gis the moveable platform (B¹) is the guide block (J) is the fly nut to the
bolt on which the guide block (B1) is pivoted to the raised platform (G³). (N) is.
the fly nut to the bolt which passes through the outer end of the guide block (B')
into the slotted quadrant plate (A). (F) is the sliding block (E) is the thumb-
screw which passes through the bracket which is attached to the sliding block (F)
and on which the quadrant iron works (M) is the fly nut to the bolt which passes
through the sliding block (F) into the raised platform (G³). (P) is the slotted
plate let into the edge of the raised platform (C) is the auxiliary guide block (K).
is the fly nut to the bolt on which the auxiliary guide block (C) is pivoted to the
sliding block (F). (D) is the quadrant iron which is attached to the auxiliary
guide block (C) by a bracket and screw (G') is the removeable platform. (H) is
a hook to fasten the removeable platform to the raised platforin (1) is a clip ou
the front side of the bed plate (L) is a horizontal clamp let into the removeable
platform and worked with a thumbscrew (B2) is the vertical clamp with metal
block through which passes the thumbscrew which works the vertical clamp (S) is
the under bed plate on the saw-bench (R2) are the runners (W) is a roller.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed declare that I do
not claim anything which is included in my said Letters Patent No. 15332 of 1894
but that what I claim is :-
The improved mitre cutting and shooting block constructed substantially as
herein before described and shewn in the drawings hereunto annexed.
Dated this 9th day of July 1895.
WILLIAM OLIVER BAILEY,
Applicant.