Improvements in Locks for Doors and the like.
Year: 1896

page_text: Date of Application, 14th July, 1896-Accepted, 3rd Oct., 1896
COMPLETE SPECIFICATION.
Improvements in Locks for Doors and the like.
I, HENRY DWIGHT HINCKLEY, of 67 Capitol Avenue, in the City of
Hartford, and State of Connecticut, United States of America, Machinist, 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 locks of that class having rotary tumbler-carriers and
commonly known as "cylinder-locks," the object of the invention being to furnish
an improved lock of the class specified embodying a simplified and highly reliable
organization of mechanism that will effectually defeat any attempt to open the
lock by "picking," and which may be readily assembled for use by any unskilled
person without the employment of special tools, and also to furnish a lock of the
class specified which is not only applicable to all uses that the so-called "Yale"
lock is now applied, but may also be applied to, and constitute a part of, a door-
knob, handle, or other analogous device.
In the drawings accompanying and forming part of this specification,
Figure 1 is a vertical section, taken in dotted line a-a, Fig. 2, of the improved
lock embodied in and constituting a part of a door-knob attachment, said figure
showing the lock proper concentrically supported within a door-knob and showing
a key in dotted line.
Fig. 2 is a front view of the device shown in Fig. 1, said figure showing an
axially-recessed plate secured to the knob concentric to the lock proper and having
a series of radial key-slots therein.
Fig. 3 is a front view of a mortise or desk-lock embodying these improvements.
Fig. 4 is a plan view of the lock shown in Fig. 3, a portion of the article to
which the lock is attached being shown in section, and the sliding bolt of said
lock being shown in two different positions.
Fig. 5 is a longitudinal vertical section of my improved lock, minus the bolt;
this figure being on a relatively large scale, as compared with the view of the
same parts shown in Fig. 1.
Fig. 6 is a sectional plan view of the lock proper and shows the combined
tumbler-guiding-bolt actuator in its normal position, or in position to receive the
key, and shows a key-blade inserted into the lock in position to turn said bolt-
actuator.
Fig. 7 is a cross-sectional view of the lock, minus the key, taken on a line
corresponding to the dotted line b-b, Fig. 6, and looking toward the right in said
figure.
Fig. 8 is a view, similar to Fig. 6, of the same parts and shows the tumbler-
guiding bolt-actuator turned slightly from the position shown in Fig. 6 and shows
the tumblers extending through the grooves of the key and in position to lock
said key against withdrawal.
Fig. 9 is a view, similar to Fig. 6, of the same parts and shows the tumblers in
locked engagement with the bolt-actuator. This figure is intended to illustrate
the actions of the tumblers in case the lock is tampered with, and said figure shows
a key partially inserted into a lock.
Fig. 10 is a vertical section of the lock, taken in dotted line e-c, Fig. 6, and
showing the key in position to release the locking-detent.

page_text: °
Fig. 11 is a view similar to Figa 10, showing the key and actuator as having
been turned one-half of a complete rotation; the detent in this position of the
parts re-engaging the actuator.
Fig. 12 is a rear end view of a portion of the bolt-actuator casing and the
actuator-locking detent, the bolt-actuator being removed.
Fig. 13 is a longitudinal section of the bolt-actuator casing and detent, taken in
dotted line e-e, Fig. 12, and looking toward the left hand in said figure.
Fig. 14 is a side view of the combined tumbler-guide and bolt-actuator,
detached.
Fig. 15 is a side view of a portion of the key adapted for the lock shown in
Fig. 6.
Fig. 16 is a cross-sectional view similar to Fig. 9, of the lock, showing the same
provided with superimposed actuator-locking tumblers or wards.
Fig. 17 is a longitudinal section of the parts shown in Fig. 16, said section being
taken in dotted line ff, Fig. 16.
Figs. 18, 19, and 20 are side end and plan views, respectively, of the tumbler
shown in Figs. 5 to 13, inclusive.
Similar characters designate like parts in all the figures of the drawings.
In the preferred embodiment of my invention, (shown most clearly in Figs. 1, 5,
and 6,) the lock proper-excluding the latch or bolt and its casing, which constitutes
no essential part of this invention-comprises a casing (designated in a general
way by B) a combined tumbler-guide and bolt-actuator (designated in a general
way by C,) rotatively supported in said casing and held as against longitudinal
movement; one or more actuator-locking tumblers (designated by T,) circum-
ferentially disposed about said actuator and held as against rotative movement
and a detent (designated in a general way by E) for engaging the bolt-actuator at
predetermined points in its rotary movement and for normally locking the same in
its locking or unlocking position.
The casing B; which may be of any suitable general construction for carrying
the operative parts of the lock, comprises a cylindrical bearing 2, adapted for
receiving and supporting the rotative bolt-actuator, and which will usually have a
flange 3'at the inner end thereof to form a means for attaching the same to the
casing which carries the bolt-as shown, for instance, in Figs. 3 and 4.
When the lock is used in connection with, and constitutes a part of, a door-
knob, as illustrated in Figs. 1 and 2, the inner end of the casing B will usually
be cylindrical in cross-section and externally screw threaded, to receive a nut by
means of which said casing or cylinder may be secured to the escutcheon-plate and
knob of the door.,
Referring to Figs. 1 and 2 of the 'drawings, which show the lock comprised in a
knob-attachment and, illustrates one embodiment of this invention, the bolt-actuator
casing B is shown cylindrical in cross-section from end to end and of different
diameters, the larger, outer end portion 21 of which constitutes a bearing for the
bolt-actuator and the smaller, inner end portion 3 of which constitutes a support
for the door-knob, K. This portion 31 extends for a short distance through the
escutcheon-plate 4' and is shown held in place on the door by means of a nut 5'.
The knob K, which constitutes an actuator for the key of the lock, is axially
recessed to receive the casing B of the lock and is shown provided at the front
end thereof with a guard-plate 6', which has key-guides 7', formed therethrough
and register with the key-slots of the bolt-actuator, as will be hereinafter more fully
described.
In the form shown in Fig. 1 of the drawings, the bolt-actuator has an elongated
extension or spindle 8 at the inner end thereof, which is adapted to be
operatively connected with the draw-bolt or bolt-actuating can (not shown) in any
suitable manner.
In the construction, and organization of locking device shown in Fig. 1, the
door-knob will be fitted so as to freely rotate 'upon the cylindrical actuating-casing
and will be held against longitudinal movement on said 'casing by reason of the

page_text: shoulder 91 on the door-knob abutting against the enlargement of said casing, as
will be understood by reference to said figure.
The bolt-actuator C, which also constitutes a guide for the tumbler-lock, as
hereinafter described and which may hereinafter be termed the "combined bolt-
actuator and tumbler-guide" or "tumbler-guiding bolt-actuator," is, in the
preferred form thereof shown in Fig. 14 of the drawings, in the nature of a solid
cross-sectionally circular member; is fitted for rotation in the bearing 2 of the
case; and has, in the form thereof shown in said figure, two opposing sets of
approximately semicircular grooves or guideways which extend, respectively,
around opposite peripheral portions of the bolt-actuator, and each set comprises
three relatively remote parallel guideways, those of one set being designated
by 10, 11, and 12, respectively, and those of the other set being designated
by 10, 11, and 12', respectively.
The two sets of guideways for the tumblers are shown in Figs. 6, 9, and 14,
separated from each other at opposite, adjacent ends by keyways or key-grooves 8
and 81, respectively, formed longitudinally in opposite faces of the bolt-actuator,
said keyways extending lengthwise from the outer to the extreme inner ends of the
actuator in planes at right angles to the tumbler-guideways and parallel to the
axis of rotation of the actuator and also extending, widthwise, from relatively
remote points at opposite sides of the axis of the actuator to, and terminating at
opposite outside faces of, said actuator. These keyways are separated from each
other at their inner, adjacent edges by a longitudinal wall formed integral with the
actuator, which wall coustitutes a key-centering support or key-positioning
guide C. Each of these guideways is of a width in excess of the depths of the
guideways and is wholly located between the periphery and the axis of the
actuator. Said keyways 8 and 8' are adapted for receiving the blades 25 and 251
of the key K¹ by means of which the locks are actuated. The longitudinal
wall C constitutes a guide-face for the blade of the key and insures the accurate,
operative positioning of said key with reference to the tumblers, irrespective of
any inaccuracies in fit between the bolt-actuator and its casing.
The key K' for actuating the lock will usually have two blades 25 and 25¹ in
the outer side edges of which are formed notches 15, 16, and 17, and 151, 16¹,
and 17', respectively, which correspond in position, number, width, and depth to
the peripheral guideway in the bolt-actuator and are adapted when the key is
inserted in the lock to register with said guideways. The walls of the notches in
the key-blades come into direct alinement and are flush with the corresponding
walls of the adjacent guideway of the bolt-actuator, when the key is inserted in
the lock in the manner shown in Figs. 6 and 8, to thereby bridge the space
between the two sets of guideways and transform the two normally-separated
sets of guideways practically into one set comprising a series of continuous annular
guideways.
It will be understood that the construction of the bolt-actuator, in so far as it
relates to the number of sets of guideways or the number and relative disposition
of the guideways in each set, may be variously modified without departure from
this invention, this being an arbitrary matter determined by the requirements in
each particular case. For instance, the guideway will, in practice, usually be
arranged differently in different locks for the purpose of producing the successive
values or combinations required for different locks.
As a means for locking the bolt-actuator Cagainst rotation, I have provided, in
connection with said bolt-actuator, improved locking mechanism embodying means
for normally locking the actuator when the bolt of the lock is in its locked or
unlocked position, or when the bolt-actuator is in what will be hereinafter termed
its "open and closed" position; and also embodying means for locking the bolt
intermediate of its opening and closed positions, when turned by anything except
the proper key.
The first-mentioned means for normally locking the bolt in its open and closed
positions, will preferably be in the nature of a locking-detent (designated in a

page_text: general way by E,) which is shown as a spring-catch secured in the manner shown
in Fig. 12 to the outer face of the tubular bearing 2 and having at its inner end a
cam-face projection or actuator-engaging head 18, which extends through an
opening 181 in the bearing and engages between the side walls of the longitudinal
keyways 8 and 8', alternately, as will be understood by a comparison of Figs. 5, 10, 11,
12 and 13 of the drawings. This detent is thrown out of engagement with the
actuator by means of the key K' when the same is inserted right side up into the
keyways of the actuator and pushed home, as in Fig. 10; and as a means for
preventing the unlocking of the detent relatively to the actuator when a key such
as that shown in Figs. 10, 11, and 15 is inserted wrong side up, one of the blades,
as 251 of the key, is cut away or beveled off, as shown at 26, at the inner end
thereof, so that it will not operate the locking-detent when this blade of the key is
inserted into the keyway into which the projection 18 of the detent extends;
whereas the blade 25 has its inner end constructed to engage said projection and
force the same upward, as will be understood by a comparison of Figs. 11 and 10
of the drawings.
By the provision of locking means such as the detent just described it will be
seen that when the key K' is inserted in the keyway of the bolt-actuator right side
up, as shown in Figure 10, the detent E will be disengaged from said actuator;
and furthermore, said detent will, when the actuator is given a half turu, or is
shifted from the position shown in Figure 10 to that shown in Figure 11, re-engage
the actuator, and no further movement of the actuator is made possible in either
direction until the key K' is withdrawn and reinserted with the opposite edge
thereof uppermost.
The means for locking the bolt-actuator intermediate of its open and closed
positions comprises, in the preferred form thereof shown in Figures 5 to 9, inclusive,
two sets of bolt-actuator lockers or tumblers T, each set in the organization shown
comprising three tumblers, the successive tumblers of one set being located,
respectively, in the guideways 10, 11, and 12 of the bolt-actuator, and the
successive tumblers of the other set being located, respectively, in the guide-
ways 101, 11', and 121 of said actuator.
The tumblers in the preferred form thereof shown in Figs. 5 to 9 and 18 to 20,
inclusive, are segmental or partly circular in form and of a length slightly less
than the peripheral lengths of said guideways in which said tumblers are seated;
and each tumbler preferably comprises two segmentally circular duplicate plates 27
and 28, joined together at their outer edges substantially midway of their lengths
by a U-shaped connector 29 which extends outward some distance beyond the outside
edges of the two plates. These two plates 27 and 28 will, in practice, be made of
sheet-steel and will have their outer adjacent ends 30 and 301, spread or bowed
outwardly in the plane of their lengths, as shown most clearly in Figs. 19 and 20,
and tempered in this condition to form locker-arms which will have a tendency to
spring outward beyond the said faces of the locker and which are adapted to
engage the side walls of the tumbler-guideways of the actuator C when said
tumblers are assembled in working position, as shown in Figs. 5 to 9, inclusive.
These locker-arms are adapted for engaging the side wall of the key-groove in said
actuator when the bolt is turned with the improper key from the position shown in
Fig. 6 to that shown in Fig. 9, thereby locking the actuator against further
unlocking movement.
Each tumbler in the form shown in Figs. 5 to 9, inclusive, will be of a width, in
the direction of its radius, equal or substantially equal to the depth of the guide-
way and will be set up edgewise in said guideway so that the free ends or locker-
arms of said tumbler will normally have a tendency to spring apart in a direction
cross-wise of said guideway and longitudinally of the axis of the bolt-actuator C.
By joining the two plates 27 and 28 of the tumbler together at their extreme,
outside edges substantially midway of their lengths by a U-shaped connector-
which connecter will in practice be formed integral with said plates and of
tempered spring-steel-said connector will act to spread said plates relatively to

page_text: each other from end to end and thereby retain the tumblers in place in their
respective guideways when the bolt-actuators are in place in the lock-case, thus
facilitating the removal of the bolt-actuator from said case without disturbing the
operative positions of the tumblers.
In practice it is desirable that each tumbler be-made of a thin sheet metal highly
tempered, so that it may be fitted in a very narrow guideway in the bolt-actuator
and also be extremely sensitive. For this purpose the tumbler just described will
preferably be constructed of a sheet-metal blank (not shown) and preferably of a
spring-steel blank adapted to be bent to proper form.
The two sets of tumblers in the organization thereof shown in Figs. 5 to 9,
inclusive, lie in their respective guideways and extend, respectively, around opposite
faces of the periphery of the bolt-actuator, sufficient space being left at opposite
ends of the opposing sets of tumblers to permit the free insertion of the proper
key between the ends of said sets.
For the purpose of preventing the rotation of the tumblers within the actuator-
case the tumblers of one set of tumblers have projections (herein shown as the
connectors 29) seated in the channel or way 32, formed longitudinally in the inner
face of the actuator-case at one side of the bolt-actuator, and the other set of
tumblers are shown having similar projections which engage in the same channel
or way formed ongitudinally in the opposite inner face of the actuator-case.
If,
When the proper key is inserted in the proper position in the keyways of the
actuator the walls of the key-notches coincide with, and practically constitute a
continuation of, the walls of the adjacent guideways and thus form a continuous
surface or bridge over which the locker-arms or locking-points of the tumblers may
pass without engaging the side walls of the notches of the key or the side walls of
the keyway in the bolt-actuator, which would prevent the rotation thereof.
however, the walls of said key-notches be not accurately placed relatively to the
walls of the guideways, or if the notches in said key are of greater or less width
or depth than the guideways, the tumblers will on the turning of the bolt spring
outward and engage either the corners of the walls of the key-notches or the side
wall of the keyway in the bolt-actuator, and thus effectually prevent the operation
of the lock.
By reference to Figs. 6 and 8 of the drawings, it will be seen that when the
proper key is inserted in the lock in the proper way and the bolt-actuator is turned
thereby the tumblers will, during the rotation of the bolt-actuator, extend through
the key-notches and will lock the key against withdrawal until said bolt-actuator
reaches its open or closed position, thus insuring a bolt locking or unlocking
movement of the bolt-actuator at each operation of the key and preventing the
removal of the key when the actuator is in a position intermediate of its open or
closed position, which is a matter of some importance in locks of this class.
In Figs. 16 and 17 of the drawings, each guideway of the bolt-actuator is shown
provided with a duplex locking device comprising two practically independent
locking members, one of which is substantially the same as the tumbler shown in
Figs. 18, 19, and 20, and is set up edgewise in said guideway as described, and the
other member 35 of which is shown in the nature of a segmental band of a width
substantially equal to the width of the guideway and is supported between the
inner wall of the guideway and the other member or between the inner edge of
said member and the bolt-actuator. In this duplex form of locking device or
tumbler the locking member 35 will have a projection 35' to engage in a notch 36,
formed in the inner edge of the adjacent locking member so as to prevent the
rotative movement of said member 35 relatively to the adjacent member.
Referring again to Figs. 1 and 2 of the drawings, the guard-plate 6' is shown
axially recessed and having a series of radially-disposed guide-slots opening into
the axial recess of said plate. This plate, it will be obvious, may be variously
modified in construction without departure from this invention-for instance, it
may be made to cover and protect the end of the lock and may simply have two
guide-slots formed therethrough to register with the keyways of the bolt-actuators.

page_text: luany case it is desirable to slightly flare the outer ends of the keyways in the
bolt-actuator, so that when the slots of the guard-plate, through which the key is
inserted, come into approximate registration with the keyways of the actuator a
slight pressure upon the key will cause the same to enter the keyway of said
actuator, as will be readily understood.
In the organization of locking devices shown in Figs. 1 and 2, the key may
be turned in either direction to actuate the lock by simply rotating the door-
knob K.
In the organization of lock mechanism shown in Figs. 3 and 4, the bolt-
actuator has secured to the inner end thereof a disk 40, carrying a bolt-actuator
pin 41, the axis of which is located at one side of, and in a plane substantially
parallel to, the axis of the actuator. This pin extends into a transverse elongated
slot 42 in a bolt 43, which is fitted for sliding movement in the casing or bolt-
carrier 44, which is secured to the lock-case B by means of screws 45 in the
manner shown in Fig. 3. The pin 41 on the actuator C and the sliding bolt 43
are so constructed aud connected that when the actuator is rotated the sliding bolt
will be thrown outward or inward, as the case may be.
The lock proper (shown most clearly in Fig. 5) may be applied to any bolt
mechanism, the bolt mechanism per se constituting no essential part of this
invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is-
1. In a lock of the class specified, the combination with a suitable casing, of a
bolt-actuator supported for rotation in said casing and having a key-centering
and guiding support extending its entire length; and one or more actuator-
locking tumblers partially surrounding the tumbler-actuator and held as against
rotative movement.
2. In a lock of the class specified, the combination with a suitable casing; of a
rotative bolt-actuator having one or more radial keyways extending its entire
length, each of which is wholly located between the periphery and the axis of the
actuator; and a non-rotative tumbler supported in said casing in concentric
relation with the actuator.
3. In a lock of the class specified, the combination with a suitable casing; of a
bolt-actuator supported for rotation in said casing and having a peripheral guideway
in concentric relation with the axis thereof, and also having a longitudinal keyway
extending its entire length, which intersects the guideway and which extends
widthwise from the periphery of the actuator to, and terminates at, a point between
said periphery and the axis of said actuator; and a tumbler located in said
guideway and held as against rotative movement.
4. The herein-described bolt-actuator for locks of the class specified, it con-
sisting of a rotative member having a series of relatively remote parallel guideways
formed in the periphery concentric to the axis thereof, and also having sub-
stantially midway of its diameter a key-centering and guiding support extending
the entire length of said actuator.
5. The herein-described bolt-actuator for locks of the class specified, it consisting
of a substantially cylindrical member having a series of circumferential tumbler-
guides and two radial keyways open at their outer edges to and intersecting the
guideways, said keyways extending the entire length of said cylindrical member,
and also having a key-centering and guiding support located between and separating
the inner adjacent ends of the keyways.
6. In a lock of the class specified, the combination with a casing and with a
bolt-actuator rotatively mounted in said casing; of a key-actuated locking-
detent supported on the casing for movement toward and away from the axis
of the actuator and adapted for locking said actuator relatively to the casing.
7. In a lock of the class specified, a casing; a cylindrical bolt-actuator

page_text: rotatively supported in said casing and having a radially-disposed keyway open at
its outer edge to the periphery and terminating at its inner edge near the axis
of the actuator to form a supporting and key-centering guide; and also having a
parti-circular peripheral guide-groove which communicates with the keyway and
is concentric to the axis of the actuator; and an actuator-locking tumbler
supported for transverse movement with respect to, and held as against longi-
tudinal movement in, the guide-groove; and adapted for engaging the side walls of
the keyway to lock the holt against rotation.
8. In a lock, the combination of a suitable casing; a longitudinally and circum-
ferentially grooved bolt-actuator rotatively supported in said casing and having a
substantially central-key-centering and guiding support extending its entire length
adapted for holding a key against transverse movement relatively to said
actuator; and a tumbler supported in the circumferential groove of the actuator.
9. In a lock, a suitable casing; a longitudinally and circumferentially grooved
bolt-actuator rotatively supported in said casing and having a substantially central
key-centering and guiding support extending its entire length adapted for holding
a key against transverse movement relatively to said actuator; and a tumbler
supported in the circumferential groove of the actuator; combined with an
actuator-rotating member removably supported in and closing the longitudinal
groove of the actuator and having a groove for registering with the circum-
ferential groove of the actuator to form a bridge over which the tumbler may
ride during the rotation of the actuator, and also a face coacting with the guiding
support of said actuator, whereby said actuator-rotating member is held when its
circumferential groove in a precise position with respect to the circumferential
groove in the actuator.
10. In a lock of the class specified, the combination with the casing and with the
bolt-actuator having a circumferential tumbler-receiving groove; of a tumbler
supported in said groove for movement longitudinally of the actuator; and an
independent tumbler supported between the actuator and the first-mentioned
tumbler for movement transversely of said actuator.
11. The combination with a rotatively-supported bolt-actuator having a keyway,
of a locking device normally engaging in said keyway in position to be actuated by
an inserted key.
12. In a lock of the class specified, the combination of a suitable casing; a
bolt-actuator supported for rotation in said casing and having circumferential
locker-guides, and also having a longitudinal keyway intersecting said locker-
guides; a detent in normal engagement with and locking said bolt-actuator against
rotation; actuator-locking tumblers circumferentially disposed about, and supported
as against longitudinal movement in the guideways of, the bolt-actuator; and
means for releasing the detent and for rotating the actuator.
13. In a lock of the class specified, the combination with the casing and with
the rotative bolt-actuator having a circumferential guideway; of two independent
parti-circular tumblers supported one by the other and located in the circum-
ferential guideway between the bolt-actuator and casing.
14. In a lock of the class specified, the combination with a suitable casing; of a
longitudinally and circumferentially grooved bolt-actuator supported for rotation
in said casing, and having a longitudinal extension adapted for connecting with the
bolt to be actuated; a series of resilient actuator-lockers supported in the circum-
ferential groove of the actuator and held as against rotative movement, and
having laterally-movable locking ends in position for engaging the walls of the
longitudinal groove of the actuator; and a locking-detent fixed to the casing, and
having means for engaging the bolt-actuator to lock the same at predetermined
points in the rotative movement thereof.
15. In a lock, the combination with a suitable casing and with a bolt-actuator
supported for rotation in said casing and having a suitable keyway therein; of
a key-actuator rotatively supported on said casing and having key-engaging

page_text: devices located in advance of the outer end of the bolt-actuator in position to engage
a key.
16. In a lock, the combination with a bolt-actuator having a longitudinal
extension for connection with the bolt to be actuated, and with the bolt-actuator
casing; of a knob-like key-actuator rotatively supported on said casing and held
as against longitudinal movement relatively to said casing; and means carried
by said key-actuator for engaging the key when the same is inserted in the lock.
17. In a lock, in combination with a rotative bolt-actuator having an extension
for connection with the bolt to be actuated, and having keyways in the outer end
thereof; a non-rotative casing surrounding said bolt-actuator, and holding the same
against longitudinal movement; a key-actuator rotatively supported on, and held
as against longitudinal movement relatively to, the bolt-actuator casing; and a
guard-plate secured to said key-actuator, and having key-slots adapted to register
with the keyways of the bolt-actuator.
18. The combination with a rotative bolt-actuator, of a knob ; a key; and means
carried by the knob for engaging said key.
19. The combination with a knob, of a bolt-actuator casing on which said knob
is normally free to rotate; a bolt-actuator within said casing; and means carried
by the knob for engaging an inserted key.
20. A lock-tumbler comprising two segmental, resilient plates having their outer
edges joined together substantially midway of their lengths by a U-shaped
resilient connector which extends outward beyond said edges and is constructed to
spread said plates relatively to each other.
21. A lock-tumbler comprising two substantially duplicate, segmental plates
having their outer edges located in a common plane and having their extreme
outer adjacent ends bowed outward in opposite directions, relatively, to form
opposing locker-arms; and a connector joining the outer edges of and extending
outward beyond the outside edges of said plates and constructed to spread said
plates relatively to each other.
Dated this 16th day of June 1896.
HENRY DWIGHT HINCKLEY.
Haseltine, Lake & Co.,
45 Southampton Buildings, W.C., Agents for the Applicant.