Improvement in the Manufacture of Keys.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvement in the Manufacture of Keys.
I, GEORGE HARRY BURROWs, of 97 and 98, Wood Street, Willenhall, in the
County of Stafford, Lock Manufacturer, do hereby declare the nature of this in-
vention to be as follows;-
-
'
The metal from which this improved key is manufactured is rolled in length
of sufficient thickness and width for the shape of the key to be cut pressed, or
otherwise out of it, and down the said metal a semi-circular rib is rolled on both
sides in such a position that when the said shape of the key is pressed out or
otherwise the said semicular ribs will form the circular pin of the key. If
a stop bead is required to be formed on the pin it can be made by rolling a
piece of metal round the pin of the key in any position required. The work
in the bit and the hole in the bow are pressed out and the key is then completed.
By this method of manufacture a key with a round pin is formed out of one piece
of rolled metal.
TL Lith doy of Mar 1898
GEORGE HARRY BURROWS.
Improvement in the Manufacture of Keys.
I, GEORGE HARRY BURROWS, of 97 and 98, Wood Street, Willenhall, in the
County of Stafford, Lock Manufacturer, do hereby declare the nature of this in-
vention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement;-
The metal from which this improved key is manufactured is rolled in lengths
of sufficient thickness and width for the shape of the key to be cut, pressed, or
otherwise out of it, and down the said metal a semicircular rib is rolled on both
sides in such a position that when the said shape of the key is pressed or
otherwise, the said semicircular ribs will form the circular pin of the key. If
a stop bead is required to be formed on the pin it can be made by rolling a
piece of metal round the pin of the key in any position required.
The work in the bit and the holes in the bow are pressed out and the key is
then completed. By this method of manufacture a key with a round pin is
formed out of one piece of rolled metal.
I will now proceed to describe this invention in connection with the accom-
panying sheet of drawings. The same letters of reference occuring on different
figures indicate corresponding parts.

page_text: Fig. 1 shows the piece of rolled metal from which the key is made. The dotted
lines showing the form of the key. A is the semicircular rib forming the pin.
B is the bow of the key.
CC are the holes in the bow. D is the bit of the key, and E E are pieces of
metal that are rolled round the pin A to form a stop bead on the key if required.
Fig. 2 show the shape of the whole key when it has been pressed or otherwise
out of the piece of metal Fig. 1, with the parts E E Fig. 1 roſled round the pin A
to form the stop bead E.
Fig. 3 shows a piece of metal as Fig. 1 showing how the stop bead E Fig. 2
may be rolled on when the metal is manufactured instead of having to be turned
round the pin. This said piece of metal F would be rolled at the necessary inter-
vals on the metal according to the length required for different kinds of keys.
Fig. 4 is a similar piece of metal to Fig. 1, but instead of cutting or pressing
out the parts E E as Fig. 1 to form the stop bead a small projecting piece of metal
only is left on the pin of the key as H, in which case a loose piece of metal would
be rolled round the pin A to form the stop head. This said piece of metal is
shown in section on Fig. 6.
Fig. 5 is a section through the centre of the bow, B showing the thickness of
the part B, the holes C Cand. the circular rib, that forms the pin A running
through the bow.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed I declare that what I
claim is;
The construction of a key made out of rolled metal substantially the same as
shown and described in this specification and the accompanying sheet of draw-
ings with a stop bead formed as shown and the same thickness of metal that
forms the pin running through the bow.
Dated this 15th day of February 1899
GEORGE HARRY BURROWS.