Improvements in Brush-blocks.
Year: 1890

page_text: Improvements in Brush-blocks.
A communication from abroad by JOHN ETTIG, of Detroit, in the County of Wayne
State of Michigan, United States of America, Brush Maker.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool and 6, Bank Street, Manchester, both in
the County of Lancaster and 323 High Holborn in the County of Middlesex, Civil
Engineer, 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 invention relates to brush-blocks, and has for its object to provide a block which
shall be simple and strong of construction, inexpensive of production, and to which
the stock may be easily secured.
With these objects in view, the invention consists in certain features of construction
and combination of parts, which will be hereinafter fully described and claimed.
In the accompanying drawings, wherein like letters of reference indicate corre-
sponding parts,
Figure 1 is a perspective view showing the stock or fiber secured in one end of the
improved brush-block.
Fig. 2 is a sectional view of a portion of the brush-block, showing the manner of
securing the rider-wire in outer groove.
In carrying out the invention :-
A represents the improved brush-block formed of a single integral piece of wood
or other suitable material. The head is constructed with a longitudinal groove b. The
groove may be of any desired shape in cross-section.
a denotes the outer groove, which extends entirely around the face or under side of
the brush and communicates at each end with an end socket. The longitudinal groove
communicates at its ends with sockets e, bored or otherwise formed therein.
B represents the stock or fiber engaged in the head. d represents the rider-wire,
which, when secured in the surrounding groove a, has its ends overlapped and inserted
or driven into the brush-block, it being understood that the stock or fiber is bent over
the rider-wire before the latter is placed in the groove.
The longitudinal groove b of course receives a rider-wire to conform to its length.
The stock and rider-wire are simultaneously forced into the groove and its communi-
cating end sockets.
In the process of engaging the stock and its rider-wire or binder in the longitudinal
groove of the brush-block, the ends of the wire are bent over into the end sockets, it
being, however, unnecessary to force the ends of the binder into the wood, as shown
in Fig. 2, as nails or brads i are driven into and through the walls of the groove, so as
to engage under the rider-wire and prevent the displacement of the same. The end
sockets enable the stock to be bunched or thickened at the ends of the brush, thereby
stiffening the same at those points which are subjected to the most wear.
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 :-
1. A brush-block, provided with grooves to receive the brush-stock, said grooves
communicating with sockets, substantially as described.
2. A brush-block, provided with a longitudinal groove having end sockets com-
municating therewith, and in combination therewith the stock or fiber, and a single
binder for said groove and its end sockets, substantially as described.

page_text: 3. A brush-block, provided with grooves communicating with sockets, a filling of
brush-fiber folded intermediate to its ends, and having its folds inserted in the grooves,
binding-wires placed within the folds of the brush-fiber, and nails driven into the
block across the wires, to retain the wires and fiber within the grooves substantially as
described.
Dated this 90th day of November 1890