Improvements in Barrel Keys for Locks.
Year: 1890

page_text: Date of Application, 19th Mar., 1890
Complete Specification Left, 5th Apr., 1890-Accepted, 24th May, 1890
PROVISIONAL SPECIFICATION.
Improvements in Barrel Keys for Locks.
I, ARTHUR THOMAS WHITE of 56 Melbourne Grove, East Dulwich in the parish
of Camberwell in the County of Surrey, Auctioneers Clerk, do hereby declare the
nature of this invention to be as follows:-
.......
My invention relates to keys commonly known as barrel keys of which a part of
the stem is bored to fit a pin fixed in the lock.
Great annoyance having been experienced by persons using keys of this kind by
reason of their becoming choked with dust and dirt from the pocket, thus rendering
it sometimes impossible to open the lock, and in many cases damaging the lock
through unnecessary exertion."
The motive of-my-invention is to supply a key which is automatically kept clean.
In carrying out my said invention, I fix a small spring in the bore of the stem at
the end nearest the bow or handle by means of a small rivet through the stem or
barrel of the key, and on the opposite end of spring I fix a small circular plate of
metal or other substance slightly smaller than the inner circumference of the barrel,
which prevents the entry of dirt. When the key is not in use, this plate is kept flush
with the end of key by means of the spring.
When the key is used the pin of the lock compresses the spring sufficiently to allow
of the key being turned, and on being withdrawn from the lock the spring extends
the plate to its normal position flush with the extremity of the key thus effectually
preventing the entrance of any foreign substance.
Dated this 10th day of Mo-L 1900
S. S. BROMHEAD,
97, Newgate Street, London, E.C., Patent Agent.
COMPLETE SPECIFICATION.
Improvements in Barrel Keys for Locks.
I, ARTHUR THOMAS WHITE of 56 Melbourne Grove, East Dulwich, in the County
of Surrey, Auctioneers Clerk, 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 :-
This invention relates to keys with a hollow pipe or barrel which passes over a pin
fixed in the lock.
Much inconvenience is often felt by persons using these keys owing to their
becoming choked by dust and dirt, thus causing delay and difficulty in opening the
lock, and sometimes injury to the lock through employing force to turn the key.
My invention is designed to supply a pipe key from which dust, dirt, or any other
substance can be automatically excluded, and I will now proceed to describe it with
reference to the accompanying drawings in which Fig. 1 shows a sectional elevation of
a key with my dust excluder inserted. Fig. 2 shews an enlarged view of the dust
excluder separate from the key.
It will be seen that I attach the dust excluder by boring the pipe or barrel about
half an inch deeper than is usual in ordinary keys and inserting a small spiral
spring a, which is fixed at the end nearest the bow or handle by means of a small
rivet b, through the stem or barrel of the key, which rivet also passes through a
loop c, of the spring. At the opposite end of the spring I attach a small pin with
enlarged head d, which will pass easily into the pipe, as shewn in Fig. 2; or a small
cap or disk of metal, or other suitable substance, inay be substituted, which is slightly
smaller than the diameter of the pipe of the key, so as to prevent the entry of dirt.

page_text: When the key is not in use this pin or disk is extended by means of the spring till it
becoines flush with the end of the key When the key is inserted in the lock, the pin
in the lock forces back the pin or disk and thereby compresses the spring sufficiently
to allow of the key being turned: On the key being withdrawn from the lock the
spring extends the pin or disk to its normal position flush with the extremity of the 5
barrel, thus efficiently preventing the entrance of any foreign substance.
Having now particularly described and ascertained the nature of my said Inven-
tion, and in what manner is to be performed, I declare that what I claim is :-
In a pipe or barrel key, the combination of the pin, or disk d, and the coiled
spring a, and rivet b, for the purpose of automatically excluding dust or dirt as
herein explained and set forth.
Band this 10th 1000
S. S. BROMHEAD,
97, Newgate Street, London, E.C., Patent Agent.

page_text: Date of Application, 19th Mar., 1890
Complete Specification Left, 5th Apr., 1890-Accepted, 17th May, 1890
PROVISIONAL SPECIFICATION.
Improvements in Barrel Keys for Locks.
I ARTHUR THOMAS WHITE of 56 Melbourne Grove East Dulwich in the Parish of
Camberwell in the County of Surrey Auctioneers Clerk do hereby declare the naturo
of this invention to be as follows:-
My invention relates to keys commonly known as barrel keys of which a part of
the stem is bored to fit a pin fixed in the lock.
Great annoyance having been experienced by persons using keys of this kind by
reason of their becoming choked with dust & dirt. from the pocket thus rendering
it sometimes impossible to open the lock and in many cases damaging the lock
through unnecessary exertion.
The motive of my invention is to supply a key from which dust, dirt or any other
substance can be instantly cleared.
In bringing my said invention into practice I utilize the ordinary barrel key now
in use by simply drilling, boring or filing a hole in the stem of the key at the
extremity of the existing bore of the barrel which is usually about " from
the end.
Should any dust, dirt or other substance get into the key, it can instantly be
cleared by simply blowing in the hole and is immediately ready for use.
Dated this Nineteenth day of March One thousand eight hundred & ninety.
COMPLETE SPECIFICATION.
Improvements in Barrel Keys for Locks.
I, ARTHUR THOMAS WHITE of 56 Melbourne Grove, East Dulwich, in the County
of Surrey, Auctioneer's Clerk, 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 keys with a hollow pipe or barrel which passes over a pin
fixed in the lock.
Great annoyance having been experienced by persons using keys of this kind by
reason of their becoming choked by dust and dirt thus rendering it sometimes
impossible to open the lock, and in many cases damaging the lock through employing
force to turn the key.
The object of my invention is supply a pipe key from which dust, dirt, or any
other substances can be instantly cleared.
I will now describe my invention with reference to the accompanying drawings in
which
Fig. 1 shews an elevation of a key with a clearing hole formed at the end of the
pipe.
Fig. 2 shews a back view of the same with the hole fully in view.
It will be seen that I utilize the ordinary pipe or barrel key as now in use by
simply forming a hole g, in the stem of the key at or near the extremity of the
existing bore of the barrel, which is usually about three quarters of an inch from the
end as shewn in Figs. 1 and 2. This hole may be cast in the key when made, or may
be cut or drilled therein, after the key is made. Should any dust, dirt, or other
substance get into the key it can instantly be cleared by simply blowing through the
hole thus formed, when the key is again ready for use.

page_text: Having now particularly described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, I declare that what
I claim is
In a pipe or barrel key the formation of the hole g, cut near the centre of the pipe
nearest the bow, and of sufficient size to allow of the expulsion of the dust or dirt by
blowing through the pipe, as herein explained and set forth.
Dated this 5th day of April 1800
S. S. BROMHEAD,
97, Newgate Street, London, E.C., Patent Agent.