Improved 'Bushes or Escutcheons for the Protection of Apertures in' Wood.
Year: 1893

page_text: ¡Date of Application, 11th. Sept., 1893
Complete Specification Left, 9th June, 1894-Accepted, 28th July,' 1894
PROVISIONAL SPECIFICATION.
Improved 'Bushes or Escutcheons for the Protection of Apertures
in' Wood.
I, PAUL KLIEMAND, of Neuendorf, Nowawes, near Potsdam, in the Empire of
Germany, Engineer, do hereby declare the nature of this invention to be -as
follows:-
My invention relates to spring bushes or escutcheons provided with flanges or
lugs, for the bushing or protection of apertures in wood.
The devices hitherto constructed for the bushing of openings in wood have
comprised spring bushes which, in some cases, consist of rings provided with
flanges or lugs, the said bushes being pressed into the wood in such a manner that
the driving or insertion of the same therein has caused the flanges or lugs to separate
from one another. If the wood should shrink, these bushes cannot be retained in
the holes..
According to my said invention, the bushes are formed by bending a strip of
suitable metal, such as steel or the like, so as to form an open ring provided with
side flanges or lugs. The lower edge of 'the said ring is bevelled or sharpened so
that the said bush may be easily driven into the wood. As the bush is driven into
the previously bored hole, the flanges or lugs thereof are pressed together in
such a manner that they may spring out or separate from one another after
the driving of the bush into the wood is completed. 'As the wood shrinks,
the flanges or lugs spring out or separate so that the said bushes cannot fall out.
Moreover, the said flanges or lugs prevent any turning of the said bushes in their
seat..
D
1
1
1000
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.
'
COMPLETE SPECIFICATION.
Improved 'Bushes or Escutcheons for the Protection of Apertures
in Wood.
I, PAUL KLIEMAND, of Neuendorf, Nowawes,' near Potsdam, in the Empire of
Germany, 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:―
According to this invention apertures in wood, cardboard, paper pulp or the like
can, for protection or ornament or for other purposes, be fitted with spring
bushes or escutcheons provided with laterally projecting Hanges or lugs, the said
bushes or sleeves being adapted to be forced into the wood or other material in
such a manner, that the said projections or lugs, by reason of their tendency to
open or spread asunder, compensate for any gradual shrinking of the wood or the
like, so that the bush or escutcheon, when once driven into the material, cannot
become loose therein.
In the accompanying drawing several forms of the improved bush or escutcheon
are shown by way of example.

page_text: The simplest form, shown in Figure 1, consists of a strip or band of metal, such
for instance as steel, which is so bent as to form an open ring a with-lateral
projections or lugs b. Upon the lower side, the ring is sharpened, so that it may
be readily pressed into the wood. The insertion of the rings or bushes into the
recesses or mortices in the wood or other material, which are made of somewhat
less diameter than the said rings or bushes, is preferably effected by hydraulic
pressure; and while the resilient ring or bush is thus forced into the mortice or
recess, its projecting flanges or lugs bare pressed together, so that, when driven
home, they have a constant tendency to move away from each other, and conse-
quently, to follow the wood or other material as it shrinks, whereby the ring or bush
is effectually prevented from becoming loose and slipping out of its mortice or
recess; moreover, as the flanges or lugs b project laterally, any rotation of the ring
or bush in the said mortice or recess is avoided.
Instead of being of a practically rectangular shape in transverse section as in
Figure 1, the ring or bush may be of any other suitable section.
In the arrangement shown in Figure 2, the ring or bush a is provided on the
outside with convex curves.
Figure 3 shows a ring or bush with two convex curves or bulged portions, so
that the said ring or bush appears to be externally reduced in diameter or grooved
in the middle.
To drive these rings or bushes into the wood or other material, the material
which is to receive them is compressed, and as the amount of pressure applied to
it for this purpose must in all cases be within the limits of its natural elasticity,
the material will closely and firmly adhere to the outline of the ring or bush, and
thereby still further increase the firmness of the connection or contact of the ring
or bush with the material in which it is embedded.
Instead of bending the ring or bush, as in the examples given above, from a metal
strip, in such a manner that the ends of such strip form the laterally projecting
flanges or lugs b, the said ring or bush may be cast, and then cut open or split on
one side, so that, when it is compressed, it may possess a certain amount of resiliency.
In this case the ring or bush may, if preferred, be provided with more than one
pair of lateral flanges or lugs b.
Rings or bushes of this type are shown in Figures 4 and 5 which illustrate
respectively two different modifications thereof.
One of the flanges or lugs which are here formed in one casting, i.e. integrally
with the main piece, is of such width or thickness, that, it may be split into two
halves forming the flanges b.
It will, however, be understood, that the rings or bushes constructed in accordance
with this invention may be of various other forms in transverse section.
In some cases it may be desirable not to drive the ring or bush right home into
the wood.
b
As an instance of this, Figure 6 represents a spool A, into the bore of which
the ring or bush is only driven sufficiently far for its top part a to be surrounded
by the wood, whilst its lower part c freely projects into the lower hollow space of
the spool. The lateral flanges or lugs 6 are, in this case, made of such length as
not to project outwardly beyond the wood. The lower free portion c of the ring
may be employed as a brake-ring or surface against which two brake-blocks,
provided for the purpose, can be pressed in any suitable manner.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what l
claim is :-
.I
A bush or escutcheon for the protection of mortices, recesses or apertures in wood,
cardboard, paper pulp (papier mâché) or the like, consisting of an open resilient ring
or bush provided with lateral flanges or lugs and adapted to be forced or driven into
the wood or other material in such a manner that the said flanges or lugs have a

page_text: tendency to spread out or move apart, so that the ring or bush cannot become loose-
in consequence of any shrinkage of the wood or other material.
* Dated this 9th day of June 1894.
D. YOUNG. & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.