IMPROVEMENTS IN LOCKS FOR FASTENING DOORS AND FOR SIMILAR PURPOSES
Year: 1885

page_text: I, HENRY HARRIS 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 LOCKS FOR FASTENING DOORS AND FOR
SIMILAR PURPOSES," 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 that class of locks for doors drawers, window sashes and
other objects, in which a stationary lock case or cylinder fixed within the door or
other object encloses a rotary key barrel having a diametric key-way, intersected
by circumferential recesses for the reception of tumblers, the inner end of the
key-barrel having a crank-pin which enters a slot in a sliding locking bolt, so that
when the proper key is introduced into the key-barrel the same can be rotated for
the purpose of sliding the bolt in either direction.
The invention partly consists in providing a stationary lock-case or shell for the
reception of a rotary key-barrel, which is formed with a front flange that serves as
an escutcheon or face-plate, and having at its other end a screw-threaded portion
adapted to receive a nut or washer disposed on the inner side of the door, drawer,
or other object in which the said lock-case is seated, whereby the lock-case is
confined in position.
The invention also consists partly in the provision of a lock-case having a front
flange which serves as an escutcheon-plate, and a rear stem or screw-threaded shank
made of a less diameter than the body of the lock-case said screw-threaded stem
being adapted to receive a fastening nut or washer arranged on the inside of the
drawer or other object in which the lock-case is seated.
The invention also partly consists in the provision of a sliding locking bolt which
enters the lock-case at right angles thereto, whereby said lock-case is immovably
held in its slot or is prevented from turning therein.
f

page_text: The invention also partly consists in certain details of construction and arrange-
ment of the rotary key-barrel, locking tumbler and bolt, as hereinafter more fully
described.
In the accompanying drawing
Figure 1 represents a front view of the improved lock as applied to a drawer or
analogous object, and showing the escutcheon-plate.
Figure 2 is a vertical section on the line x x Figure 1.
Figure 3 is a transverse section showing the spring tumbler, its fastening screw
and the key-barrel.
Figure 4 is a view of the locking barrel, showing the annular groove therein for
the reception of the spring tumbler and the longitudinal spline or rib for limiting
the movement of barrel.
Figure 5 is another view of said locking-barrel showing more clearly the key slot
therein and the rear excentric or wrist pin for operating the bolt.
Figure 6 is a view of the bolt.
Figure 7 illustrates the key-barrel in position for allowing the key to be used as
a "pull" when the bolt is retracted from its keeper.
The reference numeral 1 designates a shell or lock-case which may be in the form
of a cylinder, or it can be an angular body having a cylindrical bore or chamber.
The front of said lock case or shell 1 is formed with a flange 2 which serves as an
escutcheon or face plate disposed on the front or exposed side of a drawer or other
object to which the lock is applied, as is clearly seen in Figure 1. The rear end of
the cylinder or body 1 is closed, and is formed with a reduced portion or screw
threaded stem 3, which passes through the object in which the lock is seated and is
secured on the inner side or rear of said object by means of a nut or washer 4.
The stem or screw-threaded portion is made sufficiently long so as to allow for the
adjustment of the nut thereon to adapt the lock case or shell 1 to be used on objects
of varying thicknesses.
It is evident that in order to obtain a secure fastening, the mortise in which the
shell or locking case 1 is seated should correspond with the shape thereof, and it
may be observed that said shell or lock-case is preferably made of a cylindrical
shape so that the mortise for its reception can be made with an ordinary boring
tool. By providing the reduced or shank portion of the shell 1, the mortise which
receives the shell need not extend through the entire thickness of the drawer, door
or other object since a small aperture for the passage of said stem is all that is
required.
The lock-case or shell 1 encloses a rotating, locking or key barrel 8, which is
formed from a solid cylindrical rod of suitable diameter and convenient length to
fit the bore of the shell 1 and allow the bolt 9 to operate in rear thereof. The
front end of this key barrel bas formed in it a circular depression 10 for readily
guiding the key into the same. This depression 10 leads into a longitudinal radial
slot or diametric key way 11, extending throughout the entire length of the barrel
and adapted to receive a suitable flat key 12. The rear end of the key barrel is
provided with an excentric or wrist pin 13, which enters a groove 14 in the locking
bolt 9, for the purpose of actuating the same when the key barrel is rotated in
the stationary shell. An annular or circumferential groove 15 is also formed
in the barrel 8 and in this groove there is seated a bifurcated spring tumbler 16,
constituting the locking device proper.
The spring-tumbler around which the barrel 8 rotates, is sécured to the lock case
or shell 1 by means of a small screw 17, which passes through the shell 1 and
enters an opening 18 in the spring tumbler.
This screw also serves to prevent the endwise movement of the barrel. The ends
of the tumbler opposite to the point of its attachment to the lock-case or what
may be termed the free ends thereof are provided with prongs 19, which spring
into the key-way of the barrel 8, when an attempt is made to turn the latter
without the proper key, and in this manner said barrel is immovably held in the

page_text: lock-case. When, however, the proper key is entered into the barrel, the latter
will engage with the free ends of the tumbler and force the same away from the
key-way, thus allowing the barrel to be given a half revolution for retracting
the bolt from its keeper and allowing the drawer or other object to be opened.
A rotation of the key-barrel in an opposite direction will cause the bolt to be
projected into its keeper and in either of the movements required for shooting the
bolt in opposite directions, the spline or rib 27 extending across the annular groove
in the key barrel acts as a stop for limiting the movement of said barrel.
When the spline or rib 27 is. in line with or opposite the key way, the key is
free to be inserted or withdrawn when the bolt is opened or closed, but when as is
shown in Figure 7 the spline or stop 27 is arranged a little at one side of the key
way the bolt when opened or fully retracted from its keeper will bring the tumbler
athwart the key and prevent the latter from being withdrawn, thus allowing it to
be used as a pull; furthermore in such construction the bolt must either be
projected into its keeper or locked, or thrown above the edge of the object in which
it operates before the key can be retracted, and for these reasons the key itself
serves as a guide for indicating whether the drawer is locked or unlocked.
The locking bolt as is shown in Figure 6 is made of a solid cylindrical rod which
is capable of being cut or reduced in length so as to vary the "drop of the lock"
or permit the lock to be set at any desired distance from the edge of a drawer or
other object. The rear portion of the bolt is flattened on one side so as to permit
the locking barrel to rotate in contact there with and prevent it from turning in
its socket, and as already stated the bolt has a groove or way in which the
eccentric or wrist pin on the locking barrel operates. The bolt passes through or
enters the lock case at right angles thereto and for this reason it serves as a medium
for effectually preventing the lock case from being turned in its seat as will readily
be apparent. The bolt operates through a suitable bushing 29, which may be made
of corrugated sheet metal and is inserted into the bolt opening formed in the
drawer or other object. It should be observed that in fitting the lock in position
the case or shell thereof is entered into its seat and the nut is loosely applied to its
screw threaded end. The key barrel is then turned in the lock case so as to bring
the eccentric pin thereon uppermost and then the bolt is entered into its openings
in the lock case and made to engage with the wrist pin on the key-barrel. The
bolt being properly in place, the nut on the lock-case extension is tightened and all
the parts are now firmly held in place.
A flaring opening .25 in the rear end of the bolt leads to the groove in which the
eccentric pin operates and the inner end of said opening adjoining the eccentric
pin groove is contracted or made sufficiently narrow so that the pin must be
forcibly passed through the same in order to enter the groove in which it works.
By reason of such formation the bolt cannot be accidently withdrawn or disengaged
from the locking barrel since the pin on the latter cannot pass the edges of the
opening 25, without the exercise of considerable force.
It is obvious that by changing the shape and position of the tumbler and varying
the form of the annular groove in the key barrel and the wards of the key fitting
said annular groove and engaging with the tumbler that different combinations can
be produced so that the key adapted for one lock will not fit another lock. It is
also apparent that by providing a key-way in the key-barrel which does not extend
entirely through the same diametrically, the key is supported by a wall of metal at
the base of said key-way.
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
First. A lock case or shell having at one end a flange to serve as an escutcheon
or face-plate and threaded at the other end for receiving a nut whereby the case
or shell can be securely confined in its seat without other fastening devices,
substantially as described.

page_text: Second. In combination with the case carrying the key barrel and locking
mechanism of a lock, a screw-threaded' extension on the case or barrel to receive a
nut for confining it in its seat and a lock bolt entering the case or barrel. at right
angles thereto, said bolt being actuated by the key barrel and locking mechanism
and operating key, substantially as described.
Third. In combination with a lock-case having at one end a flange to serve as
an escutcheon, a lock-bolt entering the case at right angles thereto and connected
with the key-barrel, and locking mechanism to be operated thereby on the same
being actuated by a key, substantially as described.
Fourth. In combination with a lock-case having at one end a flange to serve as
an escutcheon and at its other end a screw-threaded stem for receiving a nut, a lock
bolt entering the case at right angles thereto capable of being locked and unlocked
by the key barrel, and locking mechanism housed within the case or barrel,
substantially as described.
Fifth. The combination of a locking bolt having a flattened rear portion, a seat
for a wrist pin and a flaring opening contracted at the intersection with the seat
for the wrist pin, with the lock-case and the key-barrel having a wrist or eccentric
pin, substantially as described.
Sixth. The combination of the bifurcated spring tumbler having an opening for
a fastening screw, and the key-barrel provided with an annular groove in which
the spring tumbler is fitted, with the lock case having an opening for the locking
bolt and a hole for the passage of the tumbler fastening screw, substantially as
described.
Seventh. The combination of the key-barrel having a key way, an annular
groove, and a spline or transverse rib arranged in said groove, with a lock case
having a bifurcated spring tumbler around which the spring barrel can rotate and
a key for operating said barrel, substantially as described.
Eighth. The combination of the key-barrel having a key-way, an annular groove
and a stop arranged in said groove at one side of or out of line with the key-way,
with a lock-case having a tumbler or stop adapted to engage with the stop of the
key-barrel and a key for operating said barrel and serving as a pull when the bolt
is unlocked, substantially as described.
Ninth. The combination of the key barrel having a diametric key-way, an
annular groove, and a stop or spline arranged in said groove, with a lock-case
provided with a stop adapted to engage with the stop of the key-barrel and
limiting the movement of the latter, substantially as described.
:
Dated this 7th day of Anril 1885
HASELTINE, LAKE & Co.,
For the Applicant.