IMPROVEMENTS IN SAFES AND STRONG ROoms
Year: 1876

page_text: LETTERS PATENT to George Hayter Chubb, of 57, St. Paul's Churchyard, in
the City of London, for the Invention of "IMPROVEMENTS IN SAFES AND
STRONG ROoms.”
Sealed the 21st July 1876, and dated the 3rd February 1876.
PROVISIONAL SPECIFICATION left by the said George Hayter Chubb at the
Office of the Commissioners of Patents on the 3rd February 1876.
CE
GEORGE HAYTER CHUBB, of 57, St. Paul's Churchyard, in the City of London.
IMPROVEMENTS IN SAFES AND STRONG ROOMS."
This Invention has for its object improvements in safes and strong rooms.
I form iron safes and strong rooms with door frames and doors arranged in the
manner shewn in the annexed sectional Drawing, Figure 1.
a is a Tiron forming one of the sides of the door frame; b is the door plate; c,
an angle iron frame or rim fixed firmly to the door plate; dis one of the bolts of
the door; it is of dovetail form, and works through a corresponding dovetail notch
formed in the edge of the frame or rim c, as is seen in the perspective view,
Figure 2.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Hayter Chubb in the Great Seal Patent Office on the 3rd
August 1876.
GEORGE HAYTER CHUBB, of 57, St. Paul's Churchyard, in the City of London.
"IMPROVEMENTS IN SAFES AND STRONG ROOMS."
This Invention has for its object improvements in safes and strong rooms.
I form iron safes and strong rooms with door frames and doors arranged in the
manner shown in the annexed sectional Drawing, Figure 1.
a is a T iron forming one of the sides of the door frame; b is the door plate; c,
an angle iron frame or rin fixed firmly to the door plate; d is one of the bolts of
the door; it is of dovetail form, and works through a corresponding dovetail notch
formed in the edge of the frame or rim c, as is seen in the perspective view, Figure 2.
By this means the portion of the door which shuts into the door frame may be made
Price A71

page_text: less deep than heretofore, whilst at the same time the construction is such as to be
capable of resisting violent attempts to force open the safe.
I would state that I do not confine myself to the precise angular shape of dove-
tailed bolt shown in Figures 1 and 2, as it may be varied, as shown for example at
Figures 3, 4, 5, 6, without departing from the dovetail principle. Nor do I confine
myself to making the notch in the frame or rim c at the edge of such rim, as the
bolt hole may be made in any part of the rim. Also the frame or rim c need not
necessarily be of angle shape, as the usual flat rim or any other shape may be made
to carry the dovetailed bolts.
Having thus described the nature of my Invention, and the manner of performing
the same, I would have it understood that I claim,-
First. The combination of T iron door frame a; door plate b; angle iron frame
or rim c; and dovetail bolts d, substantially as herein-before described.
Second. The combined construction of safe or strong room, substantially as herein-
before described.
In witness whereof, I, the said George Hayter Chubb, have hereunto set my
hand and seal, this Second day of August, in the year of our Lord One
thousand eight hundred and seventy-six.
GEORGE H. CHUBB. (L.S.)