IMPROVEMENTS IN DOOR AND OTHER LOCKS
Year: 1885

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, & Co, Patent Agents
Southampton Buildings in the County of Middlesex do hereby declare the nature
of my invention for "IMPROVEMENTS IN DOOR AND OTHER LOCKS
" to be as
follows:-
This invention relates to locks for doors and the like and has for its object to
provide a lock which can be oiled or lubricated without the necessity of removing
it from the door or otherwise disconnecting it.
The said invention is applicable to locks for chamber and street doors and can
be applied to locks already in existence.
According to the said invention a hole is bored in the portion of the bolt
projecting from the lock and parallel with the edge plate. Into this hole is
introduced a spiral spring, which at its lower end is supported by a screw inserted
into the bottom of the said hole, and which at its upper end presses against a
small valve having a seat in the upper end of the said hole which is contracted.
By pressing the valve down into the hole by means of any pointed instrument
oil can be poured into the said hole and this oil can thence flow through a hole
communicating with a groove cut longitudinally in the top of the spring bolt. The
oil will thus enter the lock and flow down upon the parts of the latter. The oil
dropping from the lever operating the spring bolt flows through a pipe onto the
springs and the tumblers. By the motion of these parts in different directions
and one against another, the oil works around all the friction surfaces where
lubrication is needed. The surplus of the oil is collected in the bottom of the lock-
case by a sponge secured there for this purpose.
This sponge is held between a folded spring which can be introduced through &
hole in the edge plate and both ends of which are shaped so that the spring is
secured in the lock, when it has been entirely introduced through the hole in the
lock-plate. A flat spring secured in the lock-case behind the end of the folded
spring facilitates the removal of the spring and the sponge out of the lock.

page_text: In locks, already in existence, this invention can be adapted in such a manner
that the oil introduced into the hole provided with a valve is conducted therefrom
along a detachable groove fixed on the lock-bolt and terminating at the surface
against which the lever operates.
If the bolt be of a shape not allowing the application of a valve into it, this
valve can be placed on the edge-plate, so that the valve may close a hole bored in
the said plate above the bolt. The valve with its spring can then be placed in a
special case in the top corner of the lock-case. The said detachable groove can in
most cases be introduced into the lock. This is, however, not the case with the
sponge and its spring, but the oil must in this event be allowed to collect in the
bottom of the lock-case, from where it may be let out through a small hole in
the edge-plate.
1005
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex, 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 door and other locks.
P
The chief object of the said invention is to provide a lock which can be oiled or
lubricated without necessitating its removal from the door or its being taken
apart.
The improvements, however, are not only applicable to new locks but also to old
ones and particularly to chamber and street-door locks, which generally have a
construction similar to that represented in the accompanying drawing, and to
which locks therefore this invention may be easily adapted.
In the said drawing the figures of which show how the improvements are
applied to new locks, and also to locks already in existance-
Figure 1 represents a side view of a lock constructed according to this invention,
the side covering plate being removed, so that the interior parts of the lock can
be seen.
Figure 2 is a section on the line a, b Figure 1; and
Figure 3 is a front view of the said lock.
Figure 4 is a side view of a lock having the present improvements applied
thereto.
Figure 5 is a section on the line c, d Figure 4 and
Figure 6 is a section of the bolt of the same.
a is the upper bolt of the lock which bolt is provided with a vertical hole,
extending quite through it. In the upper end of this hole, which is slightly
contracted, is a small valve A supported by a spiral spring B so as to close the
said hole. Both the valve and the spiral spring are introduced into the said hole
from beneath, after which the lower end of the hole is closed by a screw-threaded
plug C. The valve A is arranged in the bolt in such a position that it is outside
the front or edge plate b of the lock, when the bolt is pushed out.
When the lock is to be lubricated the valve A is depressed by means of the nose
of the oil-can, or by any suitable pointed instrument. As soon as the hole in the
bolt is nearly filled, the oil runs through a side channel into a groove D, Figures 1
and 2, situated in the upper edge of the bolt a At the rear end of the bolt,
where the edges of the groove D are cut away, the oil runs down the sides of the
bolt onto the operating lever and to the spring.
After the oil has run over these parts it is collected in a groove or channel E
extending transversely of the lock. From this channel the oil flows through a
pipe F down onto the bolt can the tumblers and springs appertaining to it. By
the movement of the parts of the lock in different directions, so that the parts
rub against one another, the oil is distributed to all the friction surfaces requiring
lubrication.

page_text: The superfluous oil is collected at the bottom of the lock, by a sponge, which, in
order that it may be taken out of the lock, is placed between the arms of a folded
spring G. This spring G, together with the sponge placed therein, is introduced
into the lock through an opening in the edge plate b, which opening, when the
bolt is pushed in, is closed by a plate H secured on the end of the lower arm of
the spring. A small shoulder I on the end of the upper arm of the spring enters
a recess in the plate b.
A spring K is provided behind the folded spring G for the purpose of pushing
the spring G, with the sponge therein, out of the lock, when the spring G is
released, by pressing down the shoulder I; by this means it is easy to draw out
the sponge.
In applying the improvements to an old lock it may be difficult to make a
groove in the bolt. In such a case, I employ a pipe or channel L, see Figure 4,
fixed on the bolt and serving to conduct the oil from the valve A into the lock.
If the bolt is of such a shape as not to permit the introduction of a valve
therein, a valve may be placed in the plate b so that the valve closes a hole drilled
in the same, above the bolt. The valve with its spring may be enclosed in a
small case, which is placed on the inner side of the plate b immediately above the
groove L, which in this case must be open.
The channel E below the latch-operating lever can be arranged in most cases,
even in old locks.
This is not, however, always possible with the spring G and the sponge
belonging thereto, because the key-hole is often placed too near the bottom of the
lock. In this case the oil may collect in the bottom of the lock (see Figure 4) and
thence flow through small holes into a receptacle M situated below the lock, from
whence the oil may be let out through a hole N in the edge plate. For closing
the hole N a valve resembling the valve A, or a simple screw, may be used.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is
First. A lock, in which oil is conducted to the upper parts of the lock by
means of a hole inade in the upper bolt, or above the said bolt in the edge plate,
which hole is closed by a valve; and of a groove formed in the bolt itself or
a pipe or channel attached to said bolt, the oil flowing through this groove or
channel being collected in a second channel, and, by means of a pipe, conducted to
the lower parts of the lock.
Second. A lock, in which the superfluous oil is collected by means of a sponge
or the like, introduced between the arms of a bent or folded spring and which can
be drawn out of the lock at the same time as the spring; or by means of a
receptacle secured beneath the lock, which receptacle communicates with the
interior of the lock through holes in the bottom thereof and can be emptied
through a hole in the edge plate.
HASELTINE, LAKE, & Co.,
For the Applicant.