Year: 1886

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 this invention to be as follows:-
This invention relates to the construction of a cylindrical lock and latch,
wherein the outer knob is disconnected from the latch in a peculiar and novel
manner, and wherein the lock is arranged to be operated from either side of the
door, as will be hereinafter more specifically described.
The said invention consists of a combined latch and lock wherein the operating
mechanism is inclosed partly within a cylindrical case, and partly within the knobs
arranged in connection with the latch, certain novel features of construction and
combination of parts being employed, all of which are hereinafter explained.
The lock and latch forming the subject matter of this application are contained
within a cylindrical case formed of semi-cylindrical sections, one of the sections
being provided with recesses while the other section is provided or formed with
pins or lugs arranged to enter the said recesses. The locking bolt or latch is
formed with a shank about which is coiled a spring; one end of this spring abuts
against the enlarged portion of the catch, while the other end abuts against an
annular flange.
.
Extending to the rear of the shank is a flattened portion formed with a longi-
tudinal slot and provided upon each side of this slot with shoulders two of
such shoulders being formed on each face of the flattened portion. The extreme
end of the casting from which the latch or bolt is formed, is rounded and formed
with a slot. At the rear end of the case is a cylindrical recess in which is
mounted a plug said plug being formed with a central recess arranged so that
when the plug is turned to a certain position, the latch or bolt cannot be turned
back.
In order that the plug may be moved to position to lock the bolt, said plug is
provided with two or more pins said pins being provided with shanks about which
there are coiled spiral springs the upper ends of the said pins being slotted: These

page_text: pins are mounted in recesses formed for their reception in the plug and when this
plug is moved, the spiral springs will act to force the pins upward into recesses
formed in the rear wall of the casing, the position of the several recesses being so
arranged that when the pins are within the recesses the recess of the plug will be
in position to admit the end of the latch or bolt. When it is desired to prevent
the latch or bolt from being thrown back, a key arranged to be inserted from
either side of the door is formed inward, and, entering the slots formed in the
pins, forces said pins within their recesses in the plug, and out of engagement with
the recesses in the case, after which movement of the pins it will be readily under-
stood that the plug may be turned to prevent the throwing back of the bolt.
Each of the knobs employed in connection with the improved form of latch and
lock is provided with an inner section and an outer section. Each of the inner
sections is formed with a flange which is over lapped by a rose employed to hold
the knob in position, the said rose being provided with a recess within which the
flange fits. The rose upon the outside of the door is secured to the rose upon
the inside of the door by bolts, the idea being to prevent the removal of the
outer knob.
.
The mechanism contained within the inner knob and arranged upon the inner
side of the bolt or latch comprises a square shaft or bar fitting within a square
aperture formed in the inner section of the knob and also fitting within a square
aperture formed in the hub of a tumbler. The hub of the tumbler fits within a
recess formed in the case and the extending arms of the tumbler bear against
shoulders upon the inner side of the latch or bolt so that when the plug is in
the proper position the bolt may be thrown back by simply turning the knob.
A second tumbler, is arranged upon the outer side of the catch or bolt, the hub
of this tumbler projecting through an aperture. Engagement between the inner
section of the knob and the second tumbler is established by means of a square
shaft or bar which is normally held in position by a spiral spring coiled about the
inwardly extending shank of a pin cylinder hereinafter described.
In order that the connection between the outer knob and the tumbler may be
broken if desired, I provide the inner knob with a central push button having an
inwardly extending stem which passes through a central bore formed in the square
shaft or bar and into the longitudinal slot that is formed in the square portion of
the latch or bolt. The said push button is normally held in position by a spiral
spring but when it is desired to throw the outer knob out of engagement with the
bolt, the said button is pushed inward which movement of the button will force a
bar out of engagement with the second tumbler and consequently disconnect the
outer knob from engagement with the bolt, the button being held in position by a
spring arm.
In order that the connection between the outer knob and the bolt may be
established from the outer side of the door, the central portion of the outer face
of the said knob becomes the escutcheon of a lock, of which the pin cylinder is a
portion. In this pin cylinder, which is surrounded by an enclosing cylinder
extending outward from the inner section of the outer knob are arranged any desired
number of pins formed with shanks and slots to correspond with the shanks and
slots of the pins. In this case, however, the pins are forced forward by their
springs into engagement with apertures formed in the enclosing casing so that the
pin cylinder cannot be moved except when the pins are forced from engagement
with the recesses of the enclosing case by a properly constructed key. After the
key has been inserted in the pin cylinder, its shank may be forced inward, thus
moving a bar into engagement with the second tumbler the said bar forcing the
push button outward against the tension of the spring catch. It will of course be
understood that after the outer knob has, through the medium of its bar been
brought into engagement with the tumbler, the bolt, or latch may be thrown back
by simply turning the knob.
The roses are formed each with an extension covering the key holes for the piň
cylinder and carry revolvable buttons having apertures for the key.

page_text: One of the greatest advantages of the improved form of lock is due to the fact
that a recess adapted to receive the lock, may be formed in the face of the door by
means of an ordinary form of bit or augur, no dressing or fitting of the recess
being required as in the case of locks contained in a rectangular case such as are
ordinarily employed.
Dated this 19th day of October 1886
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.
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 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 the construction of a cylindrical lock and latch,
wherein the outer knob is disconnected from the latch in a peculiar and novel
manner, and wherein the lock is arranged to be operated from either side of the
door, as will be hereinafter more specifically described.
The said invention consists of a combined latch and lock wherein the operating
mechanism is enclosed partly within a cylindrical case, and partly within the
knobs arranged in connection with the latch, certain novel features of construction
and combination of parts being employed, all of which are hereinafter explained.
In the accompanying drawings
.
Figure 1 is a cross sectional view of the improved latch and lock, the view
being taken on line x x of figure 4;
Figure 2 is a sectional plan view taken on the line y y of figure 4;
Figure 3 is a view of the mechanism contained within the lock case, one side of
such case being removed to disclose the contents;
Figure 4 is a view of a portion of a door representing the improved lock and
latch as it appears from the outer face of the door;
Figure 5 is a sectional view of the outer knob, the view being taken on the
linez, z of figure 2;
Figure 6 is a sectional view of the inner knob taken on the line ww of figure 2,
the push button of the inner knob being however removed;

page_text: Figure 7 is a view of the rear portion of the lock, one-half of the case being
removed and the locking cylinder being shown as moved to a position to prevent
the bolt from being thrown back;
Figures 8 and 9 represent the. apertured and movable shanks arranged in con-
nection with the knobs and tumblers;
Figure 10 is a view drawn to an enlarged scale and representing the construction"
of the pins; and
Figure 11 is a view illustrating the construction of the tumblers.
Similar letters of reference indicate corresponding parts in the several figures.
The lock and latch forming the subject of this invention are contained within a
cylindrical case A, formed of semi-cylindrical sections a a, one of the sections
being provided with recesses b, b, while the other section is provided or formed
with pins or lugs arranged to enter the said recesses. The locking bolt or latch B
is formed with a shank b'; about which is coiled a spring b¹¹, one end of which
abuts against the enlarged portion of the catch, while the other end abuts against
an annular flange c as clearly shown.
Extending to the rear of the shank b' is a flattened portion c¹ formed with a
longitudinal slot cand provided upon each side of this slot with shoulders d, d,
two of such shoulders being formed on each face of the flattened portion c¹. The
extreme end d of the casting from which the latch or bolt B is formed, is rounded
and formed with a slot d¹. At the rear end of the case A there is a cylindrical
recess in which is mounted a plug C, said plug being formed with a central recess c
arranged so that when the plug is turned to the position shown in figure 7, the
latch or bolt B cannot be turned back.
In order that the plug C may be moved, to position to lock the bolt B, said plug
is provided with two or more pins, e', el said pins being provided with shanks ell,
about which are coiled spiral springs f, the upper ends of the said pins being
slotted at f¹, as best shown in figure 10. The pins e¹ are mounted in recesses
formed for their reception in the plug C, and, when this plug is moved to the
position shown in figures 2 and 3, the spiral springs f¹ act to force the pins et
upwards into recesses f" f" formed in the rear wall of the casing A, the position
of the several recesses being so arranged that when the pins e¹ are within the
recesses 11, the recess e of the plug C will be in position to admit the end d¹¹ of
the latch or bolt B. When it is desired to prevent the latch or bolt B from being
thrown back, a key D, arranged to be inserted from either side of the door, is
forced inward to the position shown in figure 2 and, entering the slots f1 formed
in the pins e¹, forces said pins within their recesses in the plug C, and out of
engagement with the recesses in the case A, after which movement of the pins it
will be readily understood that the plug C may be turned to the position shown in
figure 7, thereby preventing the throwing back of the bolt B.
Each of the knobs employed in connection with the improved form of latch and
lock is provided with an inner section g, and an outer section g¹, the knob secured
to the inner face of the door being shown at E, while the knob upon the outer
face of the door is shown at F. Each of the inner sections g of the knobs E F
is formed with the flange h which is over lapped by the rose employed to hold the
knob in position, the said rose being provided with a recess within which the
flange fits. As shown best in figure 1, the rose h¹ upon the outside of the door,
is secured to the rose h¹¹ upon the inside of the door by bolts k, the idea being to -
prevent the removal of the outer knob.
Referring now more generally to the mechanism contained within the knob E
and arranged upon the inner side of the bolt or latch B, l is a square shaft or bar
fitting within a square aperture formed in the inner section of the knob E and
also fitting within a square aperture formed in the hub C¹ of a tumbler L, the
construction of which is best shown in figure 11, said construction being, however,
indicated in figures 2 and 3. The hub of the tumbler L fits within a recess m
formed in the case A, as best shown in figure 2, and the extending arms n n of the
tumbler L bear against the shoulders dd upon the inner side of the latch or bolt B,"

page_text: so that when the plug C is in the position shown in figure 2, the bolt B
thrown back by simply turning the knob E, as will be readily understood.
may be
A tumbler L', that is a duplicate of the tumbler L, is arranged upon the outer
side of the catch or bolt, the hub of this tumbler L¹ projecting through an
aperture m', as shown, engagement between the section g of the knob F and the
tumbler L' being established by means of a square shaft or bar o, as best shown in
figure 1, this shaft or bar o being normally held in the position shown in figure 1
by a spiral spring of coiled about the inwardly extending shank p of a pin
cylinder G, which will be hereinafter more specifically described.
•
In order that the connection between the knob F and the tumbler L¹ may be
broken if desired, I provide the inner knob with a central push button H, having
án inwardly extending stem q, which passes through a central bore q¹ formed in
the bar and into the longitudinal slot c¹ formed in the square portion c of the
latch or bolt B. The push button is normally held in the position shown in
figure 1; by a spiral spring q¹¹ arranged as shown, but when it is desired to throw
the knob F out of engagement with the bolt, the button H is pushed inward to
the position shown in dotted lines in figure 1, and in full lines in figure 2, which
movement of the button will force the bar o out of engagement with the tumbler L',
and consequently disconnect the outer knob from engagement with the bolt, the
button H being held in the position shown in figure 2 by a spring arm I, arranged
as shown.
In order that the connection between the knob F and the bolt may be established
from the outer side of the door, the central portion of the outer face of the knob F
becomes the escutcheon of a lock, of which the pin cylinder G is a portion. In
this pin cylinder G, which is surrounded by an enclosing cylinder N extending
outward from the inner section g of the knob F are arranged any desired
number of pins 8, 8 formed with shanks and slots to correspond with the
shanks and slots of the pins e¹. In this, however, the pins are forced forward
by their springs a¹ into engagement with apertures formed in the enclosing
casing N, as best shown in Figure 5, so that the pin cylinder cannot be
moved except when the pins are forced from engagement with the recesses
of the enclosing case by a properly constructed key, such as the key T, shown
in figure 1. After the key T has been inserted in the pin cylinder, its shank F
may be forced inward, thus moving the bar o into engagement with the tumbler L',
the bar o forcing the push button H outward against the tension of the spring
catch I.
It will be understood that after the knob F has, through the medium of its bar o
been brought into engagement with the tumbler, the bolt or latch B may be
thrown back by simply turning the knob.
The roses h¹, h are formed each with an extension h¹¹¹ covering the key holes
for the pin cylinder C and carry revolvable buttons G¹ having apertures for the
key T.
One of the greatest advantages of the improved form of lock is due to the fact
that a recess adapted to receive the lock, may be formed in the face of the door by
means of an ordinary form of bit or auger, no dressing or fitting of the recess
being required as in the case of locks contained in a rectangular case such as are
ordinarily employed.
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 correspondents I declare that what I claim is
First The combination with the lock case provided with a transverse cylindrical
bearing at its rear end, and the bolt in the case having a rearward extension
adapted to pass into the said bearing, of the cylindrical plug in the bearing,
a transverse recess to receive the rear end or extension of the bolt, a longitudinal
key slot and spring-actuated locking pins extending into the slot and through the
plug into the wall of the cylindrical bearing, substantially as set forth.

page_text: Second The combination with the lock case, a bolt therein, a tumbler or yoke
for operating the bolt and the inner and outer knobs, of a sectional spindle,
connecting the knobs and tumbler, the outer section being longitudinally movable
independent of the tumbler and knob, and mechanism substantially as described
extending from the inner knob to the said outer section of the spindle for moving
said section away from the tumbler, whereby the outer knob may be disconnected
from the bolt and be thereby rendered inoperative, substantially as set forth.
Third-The combination with the case, a bolt therein, operating tumblers or
yokes at opposite sides of the bolt and the inner and outer knobs, of the spindle
formed of two independent sections connecting the said tumblers and knobs, the
outer section being longitudinally movable from the tumbler, mechanism extending
from the inner knob to the said movable section for disengaging it from its
tumbler, and a spring for returning said movable section to its normal position,
substantially as set forth.
Fourth The combination with a bolt and its case, of a plug C arranged within
said case, said plug being formed with a recess e, and with recesses in which
pins e¹, el are mounted, recesses f11, f1 being formed in the case, and slots f¹ being
formed in the pins, the pins being arranged in connection with springs f
substantially as described.
Fifth The combination with a lock provided with a spring actuated bolt and
tumblers engaging lugs on said bolt, of an inner knob provided with an apertured
bar engaging one of said tumblers and with a push pin extending through said
bar and the lock bolt and means for holding the pin in the inner position, and of
an outer knob provided with a spring pressed sliding bar engaging with the
tumbler and bearing against the said push pin and with a sliding locking cylinder
having a shank bearing against the said sliding bar, substantially as described.
Sixth The combination with a bolt and its case, the bolt being formed with a
longitudinal slot c" of tumblers L L, a bar 7 formed with a central bore, a push
button H formed with a stem q bar o, and pin cylinder G, and its pins 8, all the
parts being arranged substantially as described.
Seventh The combination with a bolt and its case, of an outer knob having
a section g and containing a pin cylinder G formed to receive slotted pins s a
tumbler L' and a bar o connecting said knob and bolt, substantially as described.
T
Tember 1986
HASELTINE, LAKE & Co.,
45, Southampton Buildings, Lendon,
Agents for the Applicant.