Year: 1886

page_text: I ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex
Engineer, do hereby declare the nature of this invention (a communication from
Henry Theodore Windt of Toronto, Canada, Manufacturer) 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 the invention is to devise a coiled wire mat which will present a
surface similar to a series of scrapers; and it consists, essentially, in a series of wire
coils linked together parallel with each other, and braced by a similar series of
coils screwed into the mat at about right angles to the coils first mentioned; the
said mat so formed being preferably connected to a frame as hereinafter more
particularly explained.
Figure 1 is a plan of this improved mat, a portion of the wire coil being left off
80 as to expose the arrangement of the bracing bars.
Figure 2 is an enlarged edge section of the said mat.
Figure 3 is a end view of Figure 1, but partially in section..
Figure 4 is a plan, showing a series of right hand coils linked together and
braced by a series of left-hand coils screwed into the mat of right-hand coils in
such a manner as to pass through the joints where the right hand coils link
together.
Figure 5 is an edge view of the last figure.
When a series of right hand coils H are linked together and braced by a series
of left hand coils, I, screwed into the mat formed by the right hand coils the left
hand coils passing through the joint where the right hand coils link together, a
series of scrapers is formed on one side of the mat, as indicated. in Figure; 5 and
marked, I, in that figure, extending across the mat parallel with each other, while
a corresponding series of scrapers marked, H, in Figure 5 is formed on the opposite
side of the mat and extend parallel with each other, but at right angles to the
scrapers formed by, I. This form of right and left hand coils linked together form
a pretty stiff mat which requires only a light frame to hold it in shape.
When the mat is composed of coils twisted all in one way, that is to say,
altogether right-hand coils, or altogether left-hand-coils, the scrapers H, and I, are
as shown in Figure 3 opposite to each other and run parallel on both sides of the
mat, so that the said mat is reversible, and when held in a frame the mat may be
reversed, and the scrapers on the reverse side will run in the same direction as the
scrapers on the other side, When the mat is thus formed I prefer to use a frame
such as is shown in Figures 1, 2, and 3, which is made as follows:-
Having cut the mat the required size so that it will fit within the frame, A in
its side measurement, but a little longer in its end measurement so that the end

page_text: bars of the frame, A, may be dropped into the last coil of the mat, which arrange-
ment allows the end of all the coils to wrap round the ends of the frame, A, and
form a substantial connection thereto.
On reference to Figure 2 it will be noticed that there are a series of holes formed
by the coils and extending straight across the mat. I take advantage of these
holes to fit in at proper intervals along the mat cross bars B, which are the proper
length to extend from side to side of the machine. A rod, C, extends from end to
end of the mat, being slipped through the link-holes, a, formed by the coil, as
shown in Figure 3. This rod, C, is intended for the purpose of bracing the ends
of the frame, A, and although I have only shewn one in the drawing for that
purpose it will of course be understood that more may be used if necessary.
D, is a rod which also passes from end to end of the mat, but it is not intended
for the purpose of bracing. Both, C, and, D, pass through holes in the bars, B, but
for the purpose that D, is used it would not be necessary that it should pass
through these bars. On the opposite edge of the mat to, D, I provide the rods, E,
for the same purpose as D. These latter roda do not pass through the holes in the
bars B, but are merely divided so as to extend from bar to bar, but it will be
understood that both the rods, D, and E, pass through the link holes, a, formed by
the web. The ends of the coils on the sides of the mat are neatly twisted together,
and do not embrace the frame, A, but as the tendency of the mat under wear is to
curve in at its sides and ends it becomes necessary to rigidly fasten both the sides
and ends to a frame which will not be easily bent."
If I were to make the frame A, sufficiently heavy to resist the strain of the
contracting mat it would make the mat too heavy for general use; consequently
I am obliged to introduce the system of bracing the frame so as to accomplish the
desired purpose without making the inat too heavy.
The object of the rods, D, and E, is to provide a hold fast for the staples, G,
which securely fasten the sides of the mat to the frame A.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to
me by my foreign correspondent, I declare that what I claim is :-
1st A mat composed of a series of wire coils linked together parallel with each
other and braced by a similar series of coils screwed into the mat at about right
angles to the first series, each coil passing through the joint where the other coils
link together, substantially as and for the purpose specified.
2nd A coiled wire mat formed substantially, as described and attached to the
frame A, in combination with the bracing bar or bars B, arranged substantially as
and for the purpose specified.
3rd A coiled wire mat formed substantially as described and attached to the
frame A, in combination with a bracing bar or bars, B, and rod or rods C, slipped
through the coils as described.
4th A coiled wire mat having two of its ends secured to the frame, A, by the
coils, as described, in combination with the bars D, and E, inserted within the
coils, as described, and forming hold fasts for the staples G, which are wrapped
round the sides of the frame A, for the purpose of securing the edges of the mat to
the side frame, substantially as and for the purpose specified.