Manufacturer
Year: 1887

page_text: Date of Application, 14th Oct., 1887
Complete Specification Left, 16th July, 1888
Complete Specification Accepted, 5th Oct., 1888
We, Sir GEORGE HAYTER CHUBB, Knight, HARRY WITHERS CHUBB, A.M.I.C.E.,
both of 128 Queen Victoria Street, in the City of London, Lock and Safe Engineers
and Manufacturers, WILLIAM HENRY CHALK, of 25 Barry Road East Dulwich in the
County of Surrey Engineer and GEORGE GASKELL EXTON, of Binfield Road Clapham,
in the County of Surrey, Engineer do hereby declare the nature of this invention to be
as follows:-
This invention relates to improvements in the construction of the iron or steel shells
or bodies of safes and strong rooms and consists more especially of improved means
for connecting together the plates of such shells or bodies without rivets or screws,
but parts of such improvements are also applicable to the connection of such parts by
rivetting or screwing. According to our invention, we employ framework composed
of iron or steel channel bars into the recesses or grooves of which the plates of the
shell or body are placed and in which they are retained or held by wedges, or by
screws or nuts and bolts with or without cover or washer plates, or by other suitable
fastenings applied from the inside of the safe or strong room, in such manner that
such fastenings cannot be got at or be dislodged from the outside. The channel bars
may be of various sections according to the part they are intended to play in the
construction of the safe or strong room and the kind of fastening employed to retain
the plates in their channels or grooves, for example, in the straight flat parts of the
structure they may be of a simple H section; at the angles of the structure they may
be more or less of Lor T section, or of an L section with a rib issuing from the
internal angle, and the corners of the structure may be of forged iron or steel, or of cast
steel, so shaped as to accord with the framing or other parts composing the angles of
the structure. When wedges are employed to secure the plates in the channel framing,
various methods or means may be employed to prevent such wedges from becoming
loose in the channels or grooves; for example, their surfaces may be serrated in such
manner as to prevent the wedges from slipping backwards after having been driven in,
or set screws or pins may be passed through the inner members of the channel bars

page_text: and into or through the wedges, or the edge of the inner member of the channel bar
may be hammered over behind the heads of the wedges so as to retain the same in the
channel or groove.
We sometimes form the angles of safes or strong rooms, when employing channel
bar framing as above described, of a curved or angle plate the edges of which take
into and are secured in the channels or grooves of the adjacent channel bar framing.
Or such curved or angle plate may be checked into and rivetted to the adjacent
straight side plates of the structure without the interposition of the channel bars.
Another improved means of connecting together the plates of the shells or bodies
of safes and strong rooms, consists in the employment of a butt strap or cover plate
rolled or otherwise formed so as to receive the edges of two adjacent plates which have
been bent or flanged, outwards or inwards according to circumstances, to suit the
section of the aforesaid butt strap or cover plate, the said flanged edges of the plates
being secured to the butt strap or cover plate by screws, rivets, or nuts and bolts in
combination or not with washer plates, wedges, or other suitable devices.
Another means we employ for effecting the same object consists in the employment
of bars of a section the flat member of which forms a butt strap or cover plate to
which the edges of adjacent plates are rivetted or otherwise secured, but the said flat
member is rolled with a central rib opposite to the vertical member of the T bar.
This rib is of a depth about equal to the thickness of the plates to be connected and is
interposed between the edges of such plates; the said edges bearing close against the
sides of the said rib, and in some cases being bevilled so as to pass into dovetail
grooves formed in the sides of such rib. An inside cover or washer plate may be
secured over the joints of the edges of the plates with the sides of the aforesaid rib by
means of screws tapped into the latter, for example.
A further improvement consists in recessing the butt straps or the L, H or Trails
below the surface of the plates which they unite; by this means displacement of the
rivets, by blows applied to the said butt straps, L, H or Trails, is obviated, because
the effects of such blows are transmitted, by reason of such recessing, to_the_plates
themselves, instead of to the rivets. Recessing the butt straps L, H or Trails into
the plates also prevents the insertion of the point of a chisel between such butt straps,
LH or Trails, and the plates to which they are rivetted.
In some cases it has been customary to make rivets for connecting together the
parts of safes or strong rooms with collars at a certain part of their length; such
collars taking into suitable recesses in the plates or other parts to be united, the object
of such collars being to increase the difficulty of driving out the rivots in order to
break into the safe or strong room. We effect the same object by making the rivet
without a collar, and forming the recess as before in the part or parts to be united ;
when the heated rivet is inserted, the process of closing it causes the metal of the rivet
to be upset or expanded at the point where the recess is formed in the parts to be
joined together, filling the said recess more or less perfectly and producing an enlarged
part or collar on the rivet which serves the same purpose as the collar now in use
formed when the rivet is made.
בד
1 1-

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction of Strong Rooms and Safes.
We, Sir GEORGE HAYTER CHUBB, Knight, HARRY WITHERS CHUBB, A.M.I.C.E.,
both of 128 Queen Victoria Street, in the City of London, Lock and Safe Engineers
and Manufacturers, WILLIAM HENRY CHALK, of 25 Berry Road, East Dulwich, in
the County of Surrey, Engineer, and GEORGE GASKELL EXTON, of Binfield Road,
Clapham in the County of Surrey, 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, reference being had to the
accompanying three sheets of Drawings and to the letters and figures marked thereon
that is to say :-
This invention relates to improvements in the construction of the iron or steel shells
or bodies of strong rooms and safes, and consists more especially of improved means
for connecting together the plates of such shells or bodies without rivets or screws,
but parts of such improvements are also applicable to the connection of such parts by
rivetting or screwing.
According to our invention we employ framework composed of iron or steel
channel bars into the recesses or grooves of which the plates of the shell or body are
placed, and in which they are retained or held by wedges, or by screws, or nuts and
bolts with or without cover or washer plates, or by other suitable fastenings applied
from the inside of the strong room or safe, in such manner that such fastenings cannot
be got at or dislodged from the outside. The channel bars may be of various sections,
according to the part they are intended to play in the construction of the strong-room
or safe, and the kind of fastening employed to retain the plates in their channels or
grooves; for example, in the straight Hat parts of the structure, they may be of a
simple H section; at the angles of the structure they may be more or less of Lor
Tsection, or of an L section with a rib issuing from the internal angle, and the
corners of the structure may be of forged iron or steel, or of cast steel, so shaped
as to accord with the framing or other parts composing the angles of the
structure.
In Figure 1 of the accompanying Drawings, A is an iron or steel channel bar
forming part of the framework of a strong-room or safe; B are plates of the shell
or body of same the edges of which are placed into the recesses or grooves of the bar A
and secured therein by the wedges C which are driven tightly between the inner
surfaces of the plates B and the bar A as shewn. This Figure illustrates how various
thicknesses of plates B may be employed with the same section of bar A. If desired,
the contact surfaces of the wedges C may be serrated in such manner as to prevent
them from slipping backwards after having been driven in, or set screws or pins may
be passed through the inner members a of the bar A, and into or through the wedges C,
or other means may be employed to prevent the wedges C from becoming loose in the
channels or grooves of the bar A. Figure 2 illustrates the application of this means
of construction to the angle of a strong room or safe. The internal surfaces of the
recesses or grooves of the channel bars A may be parallel with the surfaces of the
plates B or of the wedges C, and in some cases a longitudinal groove may be formed
on the plate B and the adjacent edge of the bar A be adapted to take into same as
shown in dotted lines at a* in Figure 2.
Figures 3 and 4 shew modified forms of joints, the wedges C in these cases being

page_text: driven well home and the edges of the inner members of the bars A hammered over
behind the heads of the wedges C so as to retain them in their places in the channels
or grooves.
We sometimes form the angles of strong rooms or safes, when employing channel
bar framing as above described, of a curved or angle plate B× (Figure 5) the edges of
which take into the channels or grooves of the adjacent channel bar framing A.
Figure 6 is a perspective sketch representing a corner of a strong room or safe con-
structed as described in reference to Figure 5. E is a casting or forging suitably
connected to the framing A and plates B and forming a butt or cover plate to the
joints of the plates which meet at the corner.
Another improved means of connecting together the plates of the shells or bodies of
strong rooms or safes consists in the employment of a butt strap or cover plate rolled
or otherwise formed so as to receive the edges of two adjacent plates which have been
bent or flanged, outwards or inwards, according to circumstances, to suit the section
of the aforesaid butt strap or cover plate, the said flanged edges of the plates being
secured to the butt strap or cover plate by screws, rivets, or nuts and bolts, in
combination or not with washer plates, wedges, or other suitable devices.
Figure 7 illustrates how plates B, so bent, may be employed in connection with
channel bar framing A and wedges C.
In Figure 8, B are the plates, bent outwardly at their edges as shewn, A is a butt
strap or cover plate forming part of the frame-work of the strong room or safe, and
having an inwardly projecting web a¹. Fare suitably wedge-shaped washer plates
at the backs of which the wedges C are driven in opposite directions through a hole
in the web a¹ and serve to hold all the parts firmly together.
In Figure 9 the web a¹ of the butt strap or cover plate A is dispensed with, the
single wedge-shaped washer plate F and plates B being secured together by counter-
sunk bolts and nuts G.
Figure 10 represents an angle joint in which the plates B, with inwardly bent
edges, are held securely against the angle butt strap A by a specially shaped washer or
cover plate F and bolts and nuts G.
In Figure 11 the plates B are bent outwards to an angle of 90° and each connected
directly to butt strap A by countersunk bolts and nuts G.
Figure 12 shows an angle joint with the butt strap A recessed to receive the ends of
the outwardly projecting edges of the plates B, the whole being secured by the wedge-
shaped washer plates F and bolts and nuts G.
Figure 13 shews plates B with inwardly projecting edges retained in place by the
channel shaped cover plate or washer F and bolts and nuts G.
Figure 14 illustrates an angle joint with plates B having their edges projecting
inwards at an angle of 90° and secured directly to the corner bar or strap by studs or
bolts G.
In Figure 15 the plates B are also bent inwardly at an agle of 90° but are secured
by wedges C passing through holes formed in such plates and through an inwardly
projecting web of the butt strap A, the wedges C having their ends upset, as shewn, so
as to prevent the possibility of their working loose.
Figure 16 shows an angle joint for similarly prepared plates, but connected directly
to the bar A by bolts and nuts as at G, or bolts and wedges as at G¹.
In Figure 17 the inwardly bent edges of the plates B are connected at an angle by
washer or cover plate F and bolts and nuts G, the head G2 of the bolt being entirely
hidden in a suitably shaped recess in the bar or strap A, which recess may be formed
in the entire length of such bar, or suitable T shaped recesses may be formed only at
the points at which bolts and nuts are required.
Figure 18 illustrates a butt strap A and washer plate F suitable for various thick-
nesses (see dotted lines) of plates B with inwardly projecting edges, the washer plate F,
butt strap A, and plates B, being held together by bolts and nuts G with invisible heads
as in Figure 17.
Figure 19 shews plates B with outwardly projecting edges held to butt strap A by
washer plate F and bolts and nuts G with invisible heads.

page_text: Figure 20 illustrates the application of a somewhat similar arrangement to an angle
joint.
In Figure 21 an angle joint is shewn formed of two plates B with inwardly bent
edges secured to a butt strap or cover plate A by bolts G³ or bolts and nuts G passing
through the said plates B and tapped into or passing through the butt strap or cover
plate A.
Figure 22 shows a joint formed of similarly bent plates B but secured by bolts G³
passing between the adjacent edges of the plates B and tapped into the butt strap or
cover plate A, the joint being hidden from the interior by the washer or washer
plate F.
Figure 23 shews an angle joint formed by the outwardly bent plates B secured to
the bar or strap A by bolts and nuts & passing through the same or with their heads G
hidden as before described.
In Figure 24 outwardly bent plates B are shewn secured in a similar manner to a
butt strap or cover plate A.
Figure 25 illustrates a joint formed by bending the edges of a plate B and of a
cover plate A to an angle of 90° and securing them together by bolts and nuts G
passing directly through such bent edges.
Figure 26 shews an angle joint made by similarly bent plates held together by bolts
and nuts G and bolts and wedges G¹.
Similar letters of reference denote like parts in all the Figures of the Drawings
hereto annexed.
our said
Having now particularly described and ascertained the nature of
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
First In the construction of strong rooms and safes, the employment of channel
bars and wedges for connecting together the plates of the shells thereof, as herein-
before described, and illustrated in Figures 1, 2, 3, 4 and 7 of the Drawings hereto
annexed.
Second In strong rooms and safes constructed in accordance with the first claiming
clause hereof, retaining the wedges in place in the manner herein before described and
as illustrated in Figures 3 and 4 of the Drawings hereto annexed.
Third In the construction of strong rooms and safes forming the angles thereof of
curved or angle plates the edges of which take into the channels or grooves of the
adjacent channel bar framing substantially as hereinbefore described, and illustrated
in Figures and 6 of the Drawings hereto annexed.
Fourth-In the construction of strong rooms and safes the employment of plates
with inwardly or outwardly flanged or bent edges in combination with butt straps or
cover plates, and retained or held in position by means of bolts and nuts, rivets, studs,
wedges and washer plates, as herein before described, and illustrated in Figures 8 to 26
inclusive of the Drawings hereto annexed.
Dated tuis
14th day of July 1000.
G. H. CHUBB.
H. W. CHUBB.
W. H. CHALK.
G. G. EXTON.
Per W. H. Beck,
115, Cannon Street, London,
Agent.