AN IMPROVMENT OR IMPROVEMENTS IN THE CONSTRUCTION OF LOCKS AND LATCHES FOR DOORS, GATES, AND OTHER USEFUL PURPOSES
Year: 1836

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SAMUEL
FENTON, of Fishguard, in the County of Pembroke, South Wales, Clerk, send
grecting.
'
"
of
WHEREAS His present most Excellent Majesty King William the Fourth,
did, by His Royal Letters Patent under the Great Seal of Great Britain,
bearing date at Westminster, the Tenth day of February, in the sixth year
His reign, and in the year of our Lord One thousand eight hundred and thirty-
six, give and grant unto me, the said Samuel Fenton, His especial licence,
full power, sole privilege and authority, that I, the said Samuel Fenton,
my executors, administrators, and assigns, and such others as I, the said
Samuel Fenton, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and. at all times during the
term of years therein expressed, should and lawfully might make, use, exercise,
and vend, within England, Wales, and Town of Berwick-upon-Tweed, my
Invention of "AN IMPROVMENT OR IMPROVEMENTS IN THE CONSTRUCTION OF LOCKS
AND LATCHES FOR DOORS, GATES, AND OTHER USEFUL PURPOSES;" in which said
Letters Patent is contained a proviso, that I, the said Samuel Fenton, shall
cause a particular description of the nature of my said Invention, and in what
manner the same is to be performed, to be inrolled in His Majesty's High
Court of Chancery within six calendar months next and immediately after
the date of the said in part recited Letters Patent, as in and by the same,
reference being thereunto had, will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Samuel Fenton, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are fully described and
ascertained in and by the following description thereof, reference being had to
the Drawings hereunto annexed, and to the letters and figures marked thereon,
that is to say:-
That whereas the bolts and latches of other locks are actuated and propelled
immediately by the bit of the key, or by a spring or springs, my said Invention
consists, firstly, of such a latch or bolt, herein-after called a compound lever
gravitating latch bolt, as is not actuated or propelled by the bit of the key, or
by a spring or springs, although to such latch or bolt as aforesaid a spring or
springs may be applied, and is drawn back or into the lock case, not by the
ordinary mode of turning a spindle by means of a knob into which the end of
such spindle is inserted and secured, but by a lever attached to and working in
a mortice made in the under side of the common knobs or handles; each knob
or handle is to be immoveably fixed to the door by means of screws, and is
intended to answer the purpose as well of a fulcrum to the lever aforesaid as
of an instrument for drawing back the door when it shall have been unlocked
or unbolted; and here I would particularly wish it to be observed that the
form of the above handle is not confined to that of an ordinary knob, but may
be accomodated to the suggestions of fancy; and secondly, of the locking or
securing part comprising two bolts, having no connection one with the other,
one of which is actuated on the outside of the door by the key, and on the
inside of the door by a lever working horizontally in a brass plate, by which it
is attached to the door, which lever when drawn from that end of the lock
through which the latch bolt projects, the key is prevented from acting either
way, and when the key has been used to shoot forward its bolt the said lever
is prevented from_being_drawn_to_its_destination_as_above_described, so that
when the door is on the inside fastened by means of the bolt, actuated by the
horizontal lever, the power of the key either to lock or unlock is entirely
suspended; and when the door is on the outside fastened by means of the bolt
actuate by the key, the power of the horizontal lever to propel its bolt is
taken away, and no possibility of unlocking from the inside exists, all com-
munication between the key bolt and the lever bolt being cut off by the inter-
vention of an iron plate; and, thirdly, that whereas in other locks having
tumblers to secure the bolts thereof from being pushed back, and the said
tumblers are each and all of them raised off the bolts immediately, that is to
say, by (contact of) the bit or web of the key, there is in the said locking
part of my Invention a tumbler which is not raised by contact of the bit of the

page_text: key, and is inaccessible to any instrument, minute or powerful, which may bo
inserted into the lock through the key hole, all which assertions will bo
established by the following description of the Drawings.
Figure 1 is a front view of the lock with so much of the bolt projecting as
is seen in the ordinary mortice locks; A, the aperture into and in which are
inserted and play levers in the under part of the knobs, to lift up and thereby
to draw back the latch bolt, presently to be more fully denominated and
described; B, the keyhole and the pin on which the key is to revolve, together
with the four screws (marked by the Figures 1, 2, 3, 4,) which attach the
front and back plates to the frame of the lock. This (X) mark denotes the
heads of four pins sustaining four friction rollers rivetted into the back plate
and coming through the front plate, each pin having a shoulder at each end,
the shoulder at the end rivetted into the back plate being for the purpose of
ensuring the perpendicular position for the pins, and their shoulders are made
by a lathe; and the other shoulder, at the end where the pin comes through
the front plate, being for the purpose of preventing that plate from oppressing
the latch bolt. And be it observed that the foregoing remark is precisely
applicable to the pin which is the centre on which the latch bolt moves, which
pin is designated by the letter C. Figure 2 is a back view of the lock; D, tho
aperture for the reception and play of the levers already noticed; E, a slot in
the back plate, in which slot the neck of the thumb bolt plays. Figure 3 is a
front view of the lock, the front plate being removed, shewing it on the half
bolt, by which expression of "half bolt" is meant the projection of so much of
the bolt as is to be seen in the mortice locks in common use, and exhibits the
two principal parts of which the lock consists, namely No. I., the compound
lever gravitating latch and bolt, which I call the latch bolt, and No. II. the
locking or securing part. The latch bolt consists of three principal parts,
namely, F the bolt, G the connecting link, II the gravitating part which
I call the actuator, resembling a latch in its action. The dotted lines on the
bolt (F) shew the extent of the mortice, in which one end of the connecting
link (G) is inserted and plays; this connecting link, which serves as a lever to
draw in the bolt when the actuator is raised by the lever in the handle of the
door, and to propel it when the actuator falls, is fastened to the bolt and
actuator by two pins (marked K. and L) inserted through a hole in each end
of the said link, the size of which is to be no more than just sufficiently capa-
cious to allow a play about the said pins. The pin L, which secures that end
of the link inserted into the actuator, is to be rivetted, but the other pin K
securing the other end of the link, is not to be rivetted, so as to moveable in order
to admit of the bolt being shifted to suit a right or left hand lock as occasion

page_text: may require. The actuator works on the pin C, and the bolt F moves into and
cut of the lock case between the four friction rollers N, N, N, N. The actuator
(H) consists of three pieces, namely, two external plates and an intermediate
piece forming the necessary mortices shewn by the dotted lines, and which
picces together form the thickness of the lock within the front and back
plates. The plates of the actuator are fastened to the intermediate piece by
the rivets marked thus (×). The check (R), which prevents the actuator
from falling down to its full extent by one end of it resting in a notch G
formed in the top of the partition plate (W), thereby causing the lock to be
on the half bolt, is secured by and moves on the fixed pin (S). The dotted
lines on the actuator immediately above the check shew the mortice into
which the check retires upon being raised out of the said notch by the
action of the inner tumbler (about to be described,) when lifted by the
bit of the key. The aperture (T) in the actuator is for the reception of
the handle levers, as already described. The locking part, Number II.
exhibits the front view of the guide plates (O, P): The partition plate
(W), which cuts off all communication between the key bolt and the
thumb bolt; the key pin (X); the key bolt (Y) drawn back, with the
notch (Q) therein for the reception of the bit of the key; the arm of the
outer tumbler (Z); the concealed or inaccessible tumbler (a); the inner
tumbler (6); the butterfly wings (c, c); the upper pin (d), infixed into the
outer tumbler, on which pin the said wings are suspended; the lower pin (e),
infixed into the concealed or inaccessible tumbler, which pin the said wings
embrace after the manner of a forceps, by reason of their lateral weight, and
by which pin so seized the said wings raise the inaccessible tumbler as occasion
requires; the wings expander (f); the screw (g), which attaches the said
expander to the partition plate; the staunch pin (h), to keep the said
expander immoveable; the pin (2), by which the outer and inner tumblers
are secured on one side of the partition plate, and the upper tumbler belonging
to the thumb bolt is secured on the other side of the said partition plate;
the pin (), by which the inaccessible tumbler is secured on one side of the
partition plate and the under tumbler belonging to the thumb bolt is secured
on the other side of the said partition plate. The dotted lines at the foot
of the fore guide plate (0) shew the screw by which it is fastened to the frame
of the lock, and the dotted lines on the lower part of guide plate (P) shew the
screw attaching the said guide plate to that part of the frame where it is
represented as stationed. The dotted lines (l, m,) on the guide plates shew the
mortices through which the key bolt (Y) moves, and by which it is restrained
ad kept in its place. The round hole (a) in guide plate P is for the purpose

page_text: of enabling the workman to see whether the inner extremity of the outer and
inner tumblers allow the key bolt when in being drawn back by the key to
pass them (at that point of the said bolt next to the inner extremities or
catches of the said tumblers) air-tight, or with the least possible space between
the points of contact. Figure 4 is a front view of the lock, the front plate
being removed, showing it in a locked state with the bolt (F) protruded to its
full extent. The dotted lines A, A, A, on the beak of the actuator, shew the
mortice into which the key bolt (Y) is propelled. The point (B) is a step in
the upper part of the key bolt into which the inaccessible tumbler is shewn
as having fallen. The point (C) is a step in the upper extremity of the said
key bolt on which the outer and inner tumblers are shewn as having fallen.
Figure 5 is a front view of the lock, shewing the bolt (F) drawn entirely into.
the lock case by the operation of the handle lever in the aperture T. Figure
6 is a plan of the lock, including the front and back plates; p shews the
bevelled part of bolt (F); g, g, the handle lever on each side. Figure 7 is a
back view of the lock, the back plate being removed, shewing it on the half
bolt and the check (R) in the notch already described. A is the upper tumbler
belonging to the thumb bolt, which said tumbler serves to raise the check out
of the notch so as to allow the actuator to fall down and thereby propel the
bolt (F) to its full extent. (B) is the under tumbler belonging to the thumb
bolt, the extremity of which acts as a lever to raise the upper tumbler when
the shoulder (C) is pressed against the corresponding shoulder (D), by the
action of the horizontal lever inserted into the slot (F) in the thumb bolt (E),
when drawn from that end of the lock where the bolt (F) projects. The
dotted lines (l, m,) on the guide plates shew the mortice in which the thumb
bolt (E) moves and is restrained. The dotted lines (a, a, a,) on the beak of
the actuator shew the chamber for the reception of the thumb bolt when pro-
pelled by the horizontal lever. The dotted lines (S, T, U,) shew the gap in
the main plate of tumbler A, which gap allows the free play of that end of the
horizontal lever inserted into aperture (F), in the thumb bolt (E). Figure 8
is a back view of the lock, the back plate being removed, shewing it in a bolted
state; the thumb bolt (E) having been propelled into its chamber (a, a, a)..
Figure 9 shews the butterfly wings A, B. The pinion of wing (A) is halved.
from a to b. The pinion of wing B is also halved on the reverse side to the
pinion of wing (A) from c to d. Figure 10 shews the outer tumbler d, the
upper pin on which the butterfly wings are to be suspended; Z, the arm by
which the said tumbler is raised by the bit of the key; c, the are in which the
bit of the key moves when it raises the said tumbler; b, b, h, are the riv ts
attaching the said arm to the main part of the said tumbler, which main part

page_text: extends from D to D.
Figure 11 shews the inaccessible tumbler; c is the
pin by which, being embraced by the forceps in the lower extremity of the
butterfly wings, the said tumbler is raised off the step in the key bolt;
fis the catch of the said tumbler; the dotted lines shew the projecting
collar on the reversed side. Figure 12 is a plan of the inaccessible tumbler.
e is the pin which the butterfly wings embrace; g is the collar, the extent of
the projection of which is to be regulated by the thickness of the inner tumbler,
but yet exceeding that in thickness so much as to admit of the said inacces-
sible tumblers playing free of the surface of the said inner tumbler. Figure 13
shews the inner tumbler; D is the space allowed for the collar of the inacces-
sible tumbler, the projection of which collar is so far to exceed the thickness of
the said inner tumbler, that the said collar moving on or against the partition
plate (W) the inaccessible tumbler may play quite free of the surface of the
inner tumbler; E, the catch, which when the key bolt has been protruded into
its chamber in the beak of the actuator, falls on the step in the upper end of
the said bolt, and serves to restrain it in that position; and when the said balt
has been drawn back, the part E, as shewn by the dotted lines in hole (2), in
guide plate P, in Figure 3,) falls down into an aperture or open space (lying
between the lintel of the mortice in the said guide plate, and the piece of
metal attached to that end of the key bolt lodged in the mortice of the said
guide plate, and on that side of the said key bolt next to the partition plate) and
thereby keeps the said key bolt from removing from that position in which, after
it had been thrown back, it was left by the key; c, the arc in which the farther
apex of the bit of the key moves in order to raise the said tumbler. Figure 14
shews the key bolt; Q, the notch for the reception of the bit of the key; H,
the shoulder which prevents the said bolt from being thrust too far forward;
B, the step to receive the catch of the inaccessible tumbler; C, the step for
the reception of the catches of the outer and inner tumblers. Figure 15
shews the plan of the koy bolt; L, the piece of metal attached to that end of the
said bolt lodged in the guide plate, and on that side of the said bolt which is
next to or faces the partition plate, which piece is required to be of the same
thickness as the piece fastened to the fore part of the partition plate, and de-
scribed in Figure 16. Figure 16 shows the partition plate (W), guide plate (O)
being taken off and the key bolt removed, remaining infixed in guide plate P.
A, the piece attached to the partition plate, the thickness of which piece is to
to be such as to make sufficient room between the key bolt and the partition
plate for the free play of the inner tumbler, shewn in Figure 13. A similar
piece is attached by the same rivets to the other side of the partition plate in
order to make suflicient room between the thumb bolt and the partition plate for

page_text: the free play. of the lower part of the main plate of the upper thumb bolt tumbler,
described in Figure 7.. The dotted lines b and c shew the depth of the groove
in guide, plate P, into which the. partition plate is inserted. This and the
corresponding groove in guide plate O must be exactly in the centre of -cach
guide plate. The perpendicular dotted line (d) shews the superficial; dimen-
sions of the piece attached to that part of the partition plate, and corre
sponding in thickness to the piece (A), described already in this Figure. The
horizontal lines. (e, e,) shew the thickness of the lintel of the mortice in guide
plate P. The space between the perpendicular lines (f. f.) shews the width of
the said lintel. G, the notch in the top of the partition plate, into. which
the check falls;. H, the check of guide plate P, which serves to keep tho
outer and inner tumblers in their place,, consisting of the space between. the
check aforesaid and the partition plate, and to ensure their motion.to.be
equable. Figure 17 is a plan view of Figure 16. A, A, and B; B, are the
picces attached to the partition plate, of such thickness as to make sufficient
space for the inner tumbler on the one side, and for the lower part. of the
main plate of the upper thumb bolt tumbler on the other side of the partition
plate to play freely between their respective bolts, and the partition plate.X.is
the key. pin. Figure 18 shows that part of the beak of the actuator., which
fronts those, ends of the key, and thumb bolts that are protruded into the
chambers seen. in tlie said beak; for their reception. A and B, the two
outer plates of the actuator; C, the chamber for reception, of the key
bolt; and D, the chamber. for the reception of the [thumb bolt; E, a
swing plate or drop, suspended on the pin F, which, whenever, it.be, touched
by either the key or thumb bolt in the act of entering, it swings. to the oppo
site side of the room it occupies, and the said swing, plate, or, drop is for
the purpose of preventing, the room door, having this lock in it, from being
fastened on both sides at the same time, for whenever the key, bolt is propelled
into its chamber C, the drop being thrown in consequence against the inside of
that plate of the actuator marked B, obstructs the entrance of the thumb bolt,
and whenever the thumb bolt is propelled into its chamber. D, the drop, being
in consequence thrown against the inside of that plate of the actuator marked A,
obstructs the entrance of the key bolt G, G, that part of the chamber intended
for the retirement and repose of the check R, where the said check is secured
by, the fixed pin S which pierces it... Figure 19. shews the thumb bolt E, .seen
in Figure 7; the oblong square aperture F is to admit the end of the horizontal
lever, and has a piece of metal projecting from each end, and to be clearly seen
in the plan view of this bolt, Figure 22, which pieces form a kind of neck
which traverses in the slot E, in the back plate of the lock, seen in Figure 2,

page_text: C, the shoulder which prevents the bolt from being thrust too far into the beak
of the actuator, and from C to D it is to be made about one-third shorter than
is the key bolt from H to O, in Figure 14. And be it observed, that both
theso bolts are to have those ends which are propelled into the beak of the
actuator bevelled on each side so as to represent an obtuse wedge, as appears
from the respective Drawings (in Figures 14 and 19), of those parts of these
bolts now in being described. Figure 20 shews the under thumb bolt tumbler,
the upper extremity of which at X acts as a lever to the upper tumbler by the
operation of the shoulders against one another; as set forth in Figure 7:
Figure 21 shews the upper thumb bolt tumbler; p, p, is the piece attached to
the main plate of this tumbler, marked t, t, and is to be of the same thickness
as the under tumbler B, as shewn in Figure 7. Figure 22 is a plan of the
thumb bolt. Figure 28 shews guide plate (O). The horizontal dotted lines
a, a, b, b, shew the extent of the mortice through which the key and thumb-
bolts traverse; c, c, shew the extent of the central groove into which the
partition plate is inserted; the space between the dotted lines d, d, is the
thickness of the lintel of the above mortice; e is the hole for the pin, which
supports the outer and inner tumblers on one side of the partition plate, and
the upper tumbler of the thumb bolt on the other side of the said plate;
f, the hole for the pin which supports the inaccessible tumbler on one side of
the partition plate and the under tumbler of the thumb bolt on the other side
thereof. Figure 24 shews the key; a is the bit or web; b is the point or
apex which raises the inner tumbler; c the point' or apex which raises the
outer tumbler, and e is the cleft which admits the bolt. The shaded part
immediately above e is bevelled, which being brought in contact in the operation
of unlocking with that side of the top of the notch (Q) in the bolt, (seen in
Figure 14), towards the right hand, extracts the said bolt out of the beak of the
actuator, the tumblers having all been raised sufficiently high so as to allow
the bolt barely to pass the extreme angles of their catches by the two points
or apices and c, both which are rounded off in the form of a semicircle.
Figure 25 is an end view of the key, -shewing the tube and the thickness of
the bit. Figure 26 'is a plan view of that part of Figure 23 which faces-
Figure 18; the dotted lines at the lower extremity represent the receptacle for
the screw which attaches guide plate (0) to the frame of the lock; b, b, are
the ends of the key and thumb bolts drawn into the said guide plates; a, a, are
the ends of the two pieces attached to each side of the partition plate
described in Figure 16; w, w, is the end of the partition plate, which is
to be (as represented) flush with this face of the said guide plate. Figure 27
is a plan of Figure 23; the aperture c, c, shews the groove into which

page_text: the partition plate is inserted, as already noticed in Figure 23; d, the, depth
of the groove in the lintel at b, in Figure 28, for the reception of tho
partition plate at (0), in Figure 16; 9, the groove above the lintel for
the reception of the partition plate at p, in Figure 16, and shewn between
X, X, in Figure 26. Figure 28 is a plan view of that part of guido
plate P which rests against the inside of the end of the lock frame;
where it is exhibited as stationed in Figure 3. Figure 29 is the par-
tition plate, guide plate P being taken off; p. is the notch or slot which
receives the lintel of the mortice in the said guide plate, already described in
Figure 16. Figure 30 is a side view of the knob handle, shewing the latch
bolt lever in it...a is the plan. view of the plate, by which, through means of
screws, the said knob handle is fixed to the door; b is tho latch-bolt .lever;
fastened into the knob handle by the fixed pin c; d is the shoulder; where:tho
end of the said lever is halved, and is formed by halving the end of this lever!
Iwould here observe that the above shoulder must be made to work quite
free of the plates of the lock. That the above description of the said lever be
as shewn in Figure 30, is equally applicable to the way in which the corre
sponding lever, the knob handle, into which it is fastened, &c., on the other
side of the door, is to be formed and fastened, and that the method:by, which
the said lever. is made to raise and draw in or back the latch bolt is, by
placing the thumb on the circumference of the knob at T, and the fore finger
to the under part of the lever at F, and pressing the said finger in the direc
tion of T.. Figure 31 ista horizontal view of the horizontal lever, which lever
propels and draws back the thumb bolt. ff, is the plate (of, the superfices
of which Figure 32 affords a view,) whereby the said lever is; fastened in the
door;re, e,shew the little plates let into and brazed in the plate (scen in
Figure 32) on each side of the slot 'h, h, so as to form a guide mortice for the
said lever, in which mortice the said lever is secured by the fixed pin m:
Figure 32 is a superficial view of the plate noticed by anticipation in Figure
31.in, n, are the holes which are to attach it to the door; h, h, the slot in
which the lever is moved horizontally in order to propel or draw back the
thumb bolt; m, m,. m, shew the fixed pin, already noticed, which supports the
said lever. Supplement. Figure 1. shews another kind of compound lever
gravitating latch and bolt in a front view of the lock, the front plate. being
removed with, the bolt part full out. A is the bolt part; B, thelgravitating
part or actuator, and formed after the same manner as is described in Figure 3;
and is.raised by the handle levers, as has been already noticed. c is tlie screw
or centre, on which the bolt A is suspended; d is a similar centre, on which
the actuator B is suspended, and both these screws are inserted into the back
.I

page_text: plate of the lock. The space or plane included in e, f, g, is the blade of the
bolt, and plays up to the shoulder, demarked by the line e, f, in the mortice in
the actuator, the extent of which is shewn by the dotted curved linc'h, i, k.:
From to m is the slot in the 'blade of the bolt. The circular dotted: line:
shews the roller, upon or about which the bolt traverses, by means of the slot
in the blade, as above noticed, for the roller is kept revolving in the same;
place by the screwn, which pierces the said roller, having first passed through
one of the plates of the actuator; and is fastened in the other: plate thereof.
Supplement Figure 2 is a front view of the lock, the front plate being removed,
shewing the bolt drawn completely into the lock case, and the blade of the
bolt entirely encased up to the shoulder, noticed above in Supplement Figure 1,
in- the mortice of the actuator. It may here be observed that the height of this
shoulder (which is to be made on each side the bolt, so as to render the
blade exactly in the centre of the bolt,) is to be regulated by the thickness of
the plates of the actuator, so as to be flush with their outer surfaces. The
locking part, which is a blank in both Figures, being similar to that seen in
Figure 3, need not here be spoken of, as it has already received a detailed
description. It should, however, be observed that the same key acts on both
sides of the above locking part, but produces no difference of result from what
is produced by the locking part No. II., above so minutely noticed..
Now, whereas, having described the said improvement or improvements in
the construction of locks and latches, applicable to doors, gates; and other
useful purposes, I hereby declare that I claim as constituting the said improve-
ment or improvements and. Invention,
First, the arrangements herein-before described of the parts forming
together the compound lever gravitating latch bolt, together with the check R
and swing plate or drop (which prevents the door from being fastened-on-botli
sides at the same time), to be applied independently of, as well as in combi--
nation with, the locking or securing part...
I claim, secondly; the concealed or inaccessible tumbler, with tlie mode. of
raising it by means of one or both of the butterfly wings, which render the
immédiate. contact of the said tumbler by the bit of the key, or by any
instrument inserted into the lock by the keyhole, unnecessary and impossible,
and in the event of the said locking part, either with or without the said
compound lever gravitating latch bolt being applied to a safe, writing desk,
drawer, Government box, &c...
I claim, thirdly, the multiplication of the bolt therein, which is actuated by
the key and the enlargement of the bit, and the multiplication of the cleft in
the bit of the key according to the number of belts to be actuated, and a sepa-

page_text: rate set of tumblers, including the concealed or inaccessible tumblers and the
butterfly wings to raise it to each bolt; the several sets of tumblers being all
similar or varied according to the discretion of the manufacturer.
I claim, fourthly, that the method of drawing back or into the lock
case the latch bolt be not confined to that mode which has been noticed in a
preceding part of this Specification, and in the remarks under Figure 30, but
by any other contrivance, such as of an additional lever, which may answer tho
same purpose of drawing back or into the lock case the said latch bolt, as is
effected by the contrivance shewn and described in Figure 30, according to
the fancy or discretion of the manufacturer.
And, lastly, I claim the downward action or action towards the bolt of the
said tumblers to be insured by the application of a spring or springs if con-
sidered necessary, or if occasion should require a spring or springs.
And the said improvement or improvements and Invention being to the
best of my knowledge and belief entirely new and never before used within
that part of His Majesty's United Kingdom of Great Britain called England,
I do hereby declare this to be my Specification of the same, and that I do
verily believe that this my Specification doth comply in all respects fully and
without reserve or disguise with the proviso in the herein-before in part
recited Letters Patent contained; wherefore I do hereby claim to maintain
exclusive right and privilege to the said Invention.
In witness whereof, I, the said Samuel Fenton, have hereunto set my.
hand and seal, this Thirtieth day of July, in the year of our Lord One
thousand oight hundred and thirty.civ