Improvements in and relating to Facings for Walls and other Structures, and Means for: Securing the same.
Year: 1895

page_text: Date of Application, 9th Apr., 1895-Accepted, 31st Aug., 1895
COMPLETE SPECIFICATION.
Improvements in and relating to Facings for Walls and other
Structures, and Means for: Securing the same.
I KARL SIEBOLD, of Gadderbaum, near Bielefeld in the Empire of Germany,
Architect, 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 :-
My invention relates to a groove and tongue facing in which the facers are
connected by grooves and tongues, either with the backing, or with each other, or
with the backing and also with one another.
The advantages obtained by this invention as compared with the mode of facing
heretofore practised, in which according to the ordinary rules of the bond
the and facers are connected with the backing, are as follows;
1. A considerable saving of facing material.
2. A better protection of the wall than by the customary mode of facing, and
3. A saving of backing materiál.
As the mode of groove and tongue facing may be greatly varied according as it
carried out with horizontal or vertical tongues, with or without special tongued
king, the following description has been divided into three main sections for the
e of clearness, the special advantage which is gained by the mode of groove and
gue facing represented by a figure being explained with reference to this
The first section dealing with the mode of groove and tongue facing relates to
e constructional form ;-
re.
1. WITH A TONGUED BACKING STONE.
Figure 1. The advantages of this constructional form consist in the use of only
one kind of facing stones, which however possess two suitable facing surfaces,
without a cutting of the backing. The joints are well protected as the facers can
be alterpated relatively to the vertical joints of the backing. For this purpose it
s however necessary to employ two different tongued backing stones which can be
easily produced by the press or at any tile works by a hand moulding process.
Figures 2. & 2. The advantages of this constructional form are an excellent
protection of the joint by alternation of the horizontal and vertical joints relatively
to those of the facing, a firm connection with the backing, very little facing material,
and the employment of only one special backing stone.
In Figure 2 one half of the facers may consist of pressed facing plates. In
these constructional forms each facer has however only one facing surface which
can be used.
Figure 3. The advantages of this constructional form are a good protection of
he joint and the use of little facing material, for in this mode the grooves are
provided vertically in the backing stone and one half of the facer has at the rear
corresponding projection which fits into the groove and holds the stone in the
backing, whilst the other half of the facer consists of simple plates which engage
with the vertical grooves of the first mentioned facer.
In this arrangement special tongued backing stones are required for each course.
Figure 4. This constructional form resembles that just described, but differs

page_text: cago the mode of groove and congue lacing relates
the constructional form.
2. WITHOUT A TONGUED BACKING STONE.
Figure 5. This constructional form has the advantage that only one form o
facing stone and no special backing stone are required, and that when alternatin
the horizontal and vertical joints a good protection of the joints is obtained, it wi
however be advisable, owing to the slight connection with the backing, to pa
attention to very careful work, making use of cement mortar.
Figure 6. This constructional form has the distinguishing feature that no specia
backing stones and little facing material are required and that a good protection.
the joint is obtained by the peculiar connection of the facing plates with the othe
facing stones; for in this mode the bond course is faced in the ordinary manne
with facing stones or also lists or fillets of the length of the entire stone, whil
the stretching courses are covered by facing plates connected by tongues with th
other facers.
Figure 7. The advantage of this constructional form lies in a great saving o
facing material and in the very easy work of facing. In this mode of facing th
bonders in the bond course are alternately scraped out, the intermediate spaces
filled up by pressed facing plates wbich engage in the bond course with the lat
vertical tongues of the bonders and bear in the stretching course upon the scr
out part of the bonders. In this instance a stretcher and a bonder form togeth
pressed plate.
With regard to the constructional forms represented in Figure 6. and Figu
it may be observed that these are particularly adapted for producing orname
facing, as the most varying designs may be easily formed in the plates by pressi
The third section dealing with the groove and tongue facing relates to th
constructional form.
3. EMPLOYMENT OF THE GROOVE AND TONGUE FACING FOR FRAMED
BUILDINGS.
Figures 8. & 9. This constructional form represented in these two figures show
the application of the aforesaid grooves and tongue facing to frame buildings.
The difference between this facing and the mode herein before set forth consist
in that the facers cannot be connected with the backing according to the rules o
the bond of stones, but must be fixed by nailing. Accordingly the facers ar
preferably produced only in the form of pressed plates.
The plates receive tongues similarly to roofing tiles in order to obtain a tigh
joint, and are fixed with zinked nails to faths suitably impregnated with carbolineum
(a preparation composed of carbolic or phentlic acid mixed with vegetable or com
tar) or any other suitable preparation.
Moreover the laths are cut to the form of dove-tails and the facing plate has a
its rear side projecting noses with which it engages with the laths so as to preven
the falling out. In order to diminish the nailing it is expedient to make the plate
as large as possible, and the plates may be either treated like a stone or the joint
formed by pressing in accordance with other rules of the bond, thereby changin
somewhat the form of the whole stone.
t
The hollow course remaining behind the plates may either remain empty or ma
be filled up with cement.

page_text: I may procure the stones from cement or any other suitable material.
Having now particularly described and ascertained the nature of my said
invention I declare that what I claim is ;-
Facings for walls and other structures in which the facing stones or blocks are
connected with each other or with the backing stones by means of grooves and
tongues substantially as described and shewn.
D
f A 1905
J. B. FLEURET,
5, Hatton Garden, London, Agent for the Applicant.
J. B. FLEURET,
5, Hatton Garden, London, Agent for the Applicant.