Year: 1899

page_text: ARTHUR RAYMOND TONKS, 56, New Road, Willenhall, Clerk, do hereby declare
the nature of this invention to be as follows:-
The object of this invention is to produce a key that will not choke up with
dust & refuse. To do this I drill the key all the way through the shank instead
of only half way as in ordinary keys, the dust is pushed out at the top when
the key is put on the drill pin. Long keys cannot be drilled right through in
the ordinary way (i.e. from one end only) but have to be drilled half way from
one end & half from the other & in order to drill them from the bow end
the key bow is cast at an angle to the shank, sufficiently bent on one side to allow
the drill to enter the shank. This necessitates a special casting with the shank
continued one thickness to the inside of the bow. The bow is straightened after
the key is drilled & then except for the hole right through the shank the key
resembles in every way an ordinary key.
Dated this Third day of March 1899.
I, ARTHUR RAYMOND TONKS, of 56, New Road, Willenhall, in the County of
Stafford, Clerk, do hereby declare the nature of this invention and in what man-
ner the same is to be performed, to be particularly described and ascertained in
and by the following statement:-
-
My invention has for its object improvements in keys and refers particularly
to those keys which have a portion of their stem drilled out to receive the key
hole centre pin of the lock and which through being carried in the pocket and
from other causes becomes clogged up with fluff and dust until at times they
become unusable while great difficulty in cleaning them out is usually experi-
enced to obviate which attempts have been made to drill the hole longitudinally
through the stem but without success as for this purpose the drill requires to be
too long in proportion to its thickness with the result that dwing to its unsteady
working it cannot be retained centrally through the whole length of the key
while by my improved process of manufacture I obviate this difficulty and provide
a key which can be commercially produced with the said hole passing through the
whole length of the stem.
In order that my invention may be clearly understood and more easily carried

page_text: into practise I have appended hereunto a sheet of drawings on which I have fully
illustrated the nature of my said invention.
Figure 1 is a side view of a key blank shewing the first part of my process.
Figure 2 is a front view of Figure 1.
Figure 3 is a section shewing the second part of my process with the drills
in position.
Figure 4 is a section of the key complete.
Figure 5 is a front view of the finished key.
In carrying my invention into effect I cast the blank of the key A with the
head a at a sufficent angle to the stem to allow the drill B of the required
diameter to clear the same and enter the head a² of the stem by which means I
am enabled to drill the stem from both ends as shewn by Figure 3 in carrying
which into effect I may fix the blank A in the gripping tools D and operate
drills from both at the same time the one drill B being arranged to have a longer
travel than that of the other B₁ which is arranged to recede just before being
reached by the point of the drill B as shewn by Figure 3 where the drill B¹ has
commenced to recede and the drill B has completed the connection or I may
first drill half way down the head and then reverse the key and drill from the
bottom until the hole at the reverse end is met after being drilled through the
head is pressed or otherwise bent into its central position as shewn by a³
Figures 4 and 5.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:
1st. In the manufacture of keys with hollow stems a blank A having the
head a¹ formed at a sufficient inclination to allow clearance for the drilling of the
upper part of the stem from the top end in combination with the drilling of the
lower part of the stem from the bottom end substantially as and for the purpose
herein set forth.
2nd. The combined process of producing keys with hollow stems consisting of
forming the blank with inclined head drilling the stem from both ends and
straightening the head substantially as herein set forth.
Dated this 2nd day of December 1899.
LEWIS WM. GOOLD,
Agent for Applicant, 5, Corporation Street, Birmingham.