CERTAIN IMPROVEMENTS APPLICABLE TO WATCHES AND OTHER HOROLOGICAL MACHINES
Year: 1829

page_text: TO ALL TO WHOM THESE PRESENTS SHALL. COME, I, ISAAC
BROWN, of Gloucester Street, Clerkenwell, in the County of Middlesex, Watch:
maker, send greeting.
;
1
WHEREAS His most Excellent Majesty King George the Fourth, by His
Letters Patent under the Great Seal of Great Britain, bearing, date at West-
minster, the Twenty-third day of September, in the tenth year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said
Isaac Brown, His especial licence, that I, the said Isaac Brown, my exe
cutors, administrators, and assigns, or such others as I, the said Isaac
Brown, 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 use, exercise, and vend,
within England, Wales, and the Town of Berwick-upon-Tweed, my Invention
of "CERTAIN IMPROVEMENTS APPLICABLE TO WATCHES AND OTHER HOROLOGICAL
MACHINES;" in which said Letters Patent there is contained a proviso, obliging
me, the said Isaac Brown, by an instrument in writing in writing under my hand
and seal, particularly to describe and ascertain the nature of my said Invention,
and in what manner the same is to be performed, and to cause the same to be
inrolled in His Majesty's High Court of Chancery within two 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
larre ennear

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Isaac Brown, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, is particularly described and
ascertained in and by the following description, reference being had to the
Drawings hereunto annexed (that is to say):-
.
:-
.
My improvements consist, in the first place, of a new mechanical arrange-
ment applicable to winding up watches and other horological machines, and
the manner in which the same is to be produced, applied, and carried into
effect is as follows: When 'the watch to be wound is what is termed a
going barrel, my contrivance applicable thereto will be best understood be
referring to Fig. 1, which represents a watch with a going barrel, to which my
Invention is applied, the dial being removed that the new works may be seen.
a is the barrel ratchet, which keeps up the maintaining power; it is larger
than is generally made use of, in order to gain power.
bis the click that
takes into the ratchet and prevents its return; and c is the click spring; d, d,
is the winder, consisting of a circular rim, with an internal circular ratchet,
_corresponding with the teeth of the ratchet a. The winder is generally made
of steel, about half the thickness of the space between the pillar plate and
dial, (but it may be made of brass or any other hard metal that will stand.)
The winder is. let.into the bezel of the. case, and when the bezel is properly
attached to the watch case the winder should be just free of the pillar plate,
and is fastened to the bezel by means of screws or pins, or it may be cemented,
as most convenient. The squares at e, e, e, are small studs to support the deal
at its proper distance from the pillar plate; the small, circles close to the squares
represent the holes to receive the dial feet, which may be pinned in the
ordinary way, or it may be be secured by a screw through the face of the dial.
The connection, of the bezel and the fashion of the case will be better seen at
Fig. 29, where I have given a section of the case, in order that it may be
better understood. In this Figure, a, a, is the bezel, having a projecting rim
underneath at o, o, the outside edge of which is turned with a slant, in the
form of a. dovetail, and fits into a groove in the case at i, i. In this Figure.
the bezel is represented and raised out of the groove that it may be the better
The way in which the bezel is prevented from rising out of its bed
when the watch is together is by means of three or more screws, as represented
at p, passing through the edge of the case at equal distances, the points of
which come against the slanting edge or dovetail of the underneath projecting
rim of the bezel and prevents it rising out, and at the same time allow the bezel to
be moved round; but I sometimes use three steel studs, as represented at g, y, g,
Fig. 1, which are screwed to the plate, and project over the winder, so as to let
seen..

page_text: the winder move easy. b, Fig. 29, is the barrel ratchet; c, c, the winder; d,
the movement plate; e, the bottom of the case; and g, the glass. Now, by
examining Fig. 1, it will be evident that when the bezel of the case h, h, to
which the winder d, d, is affixed, is moved round in a circular direction
from right to left, of the winder, taking into the teeth of the ratchet a
(which is fixed on the square of the barrel arbor, it will cause the barrel
arbor -to turn, and the main spring of the watch to be wound up. But
when my contrivances are to be applied to the winding up of a fuzee watch, it
markes a material alteration, as will be clearly understood by reference to the
Drawing, Fig. 2. In this instance, a, a, is the winder, with internal wheel
teeth; is the winding wheel, which revolves on a small hollow cylinder rising
from a steel plate let into the pillar plate of the watch, and secured by three
screws, so that the cylinder does not project higher than the plate more than the
thickness of the bottom of the winding wheel. Fig. 3 is a prospective view of
the said plate with its cylinder; Fig. 4.is a detached view of the winding wheel
with its click and spring; and Fig. 5 is a section of the same.
Now it will
be seen, by reference to Fig. 2, that the square of the fuzee comes through the
cylinder on which the winding wheel revolves, and rises so much above it as to
receive the winding ratchet c, which is fixed.upon the square, and secured by
means of a pin through the end. I would.here observe that the winding ratchet
is perfectly free of the winding wheel, so that when the winding wheel click
is removed, or lifted out of the teeth of the ratchet c, it will allow the fuzee to
move in any direction. Now, it will be evident that when the bezel of the
watch (to which the winder is attached) is moved round from left to right, the
teeth of the winder acting in the winding wheel will cause it to revolve on the
cylinder, and the click of the winding wheel falling into the winding ratchet,
will carry the ratchet round also, which, being fixed upon the fuzee square, will
wind up the mainspring of the watch. When the watch is thus wound up,
unless the click of the winding wheel 6 is lifted out of the winding ratchet.c,
the watch cannot go; I therefore raise the click in the following manner :-
d, d, are two steel.studs, a side view of one of which is given at Fig. 6; they
are screwed to the plate, and project over the winding wheel in an oblique
direction, as shewn in Fig. 2, the points of these studs being free of the
winding wheel click. The nibs at the points bear lightly on the bottom of the
winding wheel and prevent it rising off the cylinder; there is also projecting
from the point of the click.a fine circular spring, the extremity of which stands
further from the centre than the click or click spring (as seen at Fig. 4)
consequently, during the operation of winding, the spring is bent inward as it
passes either of the studs; but if the bezel be turned in an opposite direction, or

page_text: from right to left, the nib of either stud takes inside the said spring and
lifts the click out of the winding ratchet, and when the point of the stud comes
in contact with the point or end of the click it will go no further in that
direction. I also put a pin in the winding wheel at a little distance from the
click to prevent its being lifted too high. By reference to Fig. 4, it will be
seen that the small spring projecting from the click is a little enlarged near
the point of the click, so that when the nib of the stud has passed over the
enlargement it may not so easily move back again, which is to prevent tho
winder from returning by the wearing of the watch in the pocket. But I
prefer a stop-work, such as is generally used to most stop-watches, which may
be introduced at any .convenient part. In Fig. 2, 9 represents the stop-work,
the point of the arm taking into the teeth of the winder, which prevents the
bezel from moving during the wearing of the watch. I do not always make
the winder to move in one direction during the operation of winding, but I
sometimes adopt the following plan, which is more simple and cheaper than
the one just described. a, a, Fig. 7, is the winding rack frame, which moves on
à screw pivot or fulcrum at 9; near the outer edge of this frame at h are two-
pins, and there is a short projecting arm from the bezel at n, which comes
between the two pins, so that by moving the bezel the said frame is made to
move backward and forward on its fulcrum, the distance of which movement
is regulated according to the length of the winding rack 6, which may be done
by having another projecting arm from the bezel, as at i, and two stops or pins
at p. q, let into the plate. The winding rack, when in the position as represented
in the Drawing, with its back and resting against the frame, as at s, is a perfect
segment from the pivot or fulcrum at g, and is connected with the frame by
means of two arms u, u, one end of each of which is fastened to the rack and
the other end to the frame by means of screw pivots, on which they move
easily, the arms standing in rather oblique directions to the fulcrum of the
frame at g. Now it will be evident that when the bezel of the case is moved
from left to right, it will carry the winding rack with its frame in the same
'direction, and the rack teeth taking into the teeth of the winding ratchet c
(which is fixed on the fuzee square) will move the ratchet round as many
teeth as there are teeth of the rack brought into action; but when the frame
is turned back again, the enclined side of the rack teeth coming against the
enclined side of the ratchet teeth, the rack will be forced up, and will pass
back again without moving the ratchet. There is a fine spring at a screwed
to the rack frame, the point of which presses against the end of one of the
arms that projects a little beyond the screw pivot; this spring is intended to
bring back the rack to its bearing at s after it is passed the rachet. Thus

page_text: by a reciprocating motion of the bezel backward and forward the watch may
be wound up, after which the bezel must be moved back till the arm i comes
close to the stop p, at which time the rack will be quite free of the rachot
and allow the watch to go. In order to make the rack rise better out of the
rachet when the bezel is thus brought back to its stop p, I put a pin in the
end of the rack at o, which projects into a segment groove in the plate at d,
considerably wider than the pin and of such length that the pin in the rack
shall stop against the end a little before the arm i of the bezel reaches the
stop p. Thus the rack will be thrown out of the rachet teeth, and will fall iņ
when the watch is wound. But there must also be a stop-work used of the
same description as that represented at g, Fig. 2, to prevent the bezel from
moving in wearing the watch in the pocket. I also adopt the following plan
of winding up a fuzee watch, which is perhaps more simple than either of the
foregoing; it will be understood by reference to Fig. 30. a, a, is the winder,
fixed to bezel, as in Fig. 2; 6 is the winding wheel fixed on the fuzee arbour;
c is an intermediate wheel, turning on a pivot, screwed into the arm or lever
d, d, which has its fulcrum at e. The end of this arm may project a little
outside of the case, or be connected. to a slider on the edge of the case, so that
my moving the end of the lever or slider, the intermediate wheel may be
thrown in and out of gear with the winding wheel, but from the position of
the fulcrum of the lever it will always be in action with the winder a, a. When
the watch is to be wound the wheel c is to be moved into gear with the
winding wheel b, and by turning the bezel the watch will be wound up; after
which the intermediate wheel must be thrown out of gear by moving the
slider the reverse way where it may be held by a stop spring placed on the
under side of the pillar plate. Of course it will be understood that the bezels
of these three last winders are secured in their grooves or beds on the same
plan as that described above. I would also observe, I have introduced the
motion wheels into the Drawing, Figs. 1, 2, and 7, merely to shew the situation
of the wheels, as I do not purpose any alteration either in size or number to
what is generally used. But to make the watch as flat as possible with a
going fuzee, I remove the perpetual rachet and going spring from betwixt the
great wheel and furzee brass or spiral barrell (where they are invariably placed)
to the under side of the great wheel. The plan I have adopted is as follows,
and will be understood by reference to the Drawing. Fig. 8 is the under side
of the great wheel. e, e, is the sink or circular recess to receive the perpetual
ratchet, which is sufficiently deep to prevent the ratchet teeth from rising above
the surface of the wheel, as will be seen by the section of this wheel, Fig. 12.
The ratchet revolves upon a pipe turned out of the wheel in the ordinary way.
.
.

page_text: b
Within this sink there is a grove 6 to receive the going-spring, Fig: 9, one end
of which is pinned into the great wheel and the other end into the perpetual
ratchet. Fig. 10 is the perpetual ratchet with its clicks and springs, the
teeth of which rises on the under side, and not on the edge; as in the usual way;
Fig. 13 is a section of the same. Fig. 11 is the furzee ratchet; Fig. 14 is a
section of the same. The fuzee is put together in the following manner:-
First, the great wheel is put on the fuzee; next, the perpetual spring is put
into its groove b; the perpetual ratchet is next put on; and last of all the
fuzee ratchet, which is pinned to the fuzee arbor so as not to hold the per-
petual ratchet too tightly. Now the way in which the spring detant acts upon
the perpetual ratcliet (a side view of which detant is seen at Fig. 15) will
be understood by reference to Fig. 16, which shews that side of the plate next
to the dial. The fuzee is seen through the third wheel sink. a is the great
wheel; b, the perpetual ratchet with its click and spring; and c, the fuzee
ratchet. The spring detant is let into a groove in the plate at d, so as the
look of the spring shall bear lightly on the teeth of the perpetual ratchet;
hence it must be evident' that the spring detant will allow the perpetual ratchet
to pass in one direction, but not in the other, as the hook will take hold of the
teeth and prevent its return. By this arrangement I gain as much height in
the fuzee as the thickness of the perpetual ratchet:
I will here explain the way in which my keyless winding watches' are put
together and taken in pieces, which is as follows:-After the movements of
the watch are put together in the ordinary way I fasten them into the case
by means of screws or otherwise, after which (if it be a fuzee watch) I screw
on the small steel plate with its cylinder, through which the fuzee square
comes next. I put the winding wheel on the cylinder and secure it in its
place by its two studs; I then pin the winding ratchet on the fuzee arbor, after
which I put on the bezel with its winder, which is secured from rising out of.
its groove as before explained; the dial is next put on, and then the hands;
after which the glass is snapped into the bezel. When the watch is to be
taken to pieces again, I first take out the glass, by introducing a small wire
up a hole that is made through the bezel against the edge of the glass,
as represented at Fig. 29, which will throw out the glass'; I then take off
the hands, then the dial. To make the watch case look uniform and neat,
there being no joint to the sliding bezel, I do away with the outside joint"
of the bottom of the case by introducing what I shall call a spring knuckle,
which is not seen from the outside. This contrivance is shewn at Fig. 17 a is
tlic bottom of the case that contains the spring knuckle; b, b, is the spring,
which is made in a half circle to suit the size of the case; it is rather thick

page_text: towards the ends, where it is fastened to the bottom of the case, either by
screws or otherwise; the other part of the spring is rather thin till it comes
near the knuckle, so that it gives way with very little pressure. The knuckle
stands higher than the spring, and is made of such height as to accommodate
the thickness of the case, and is made out of solid steel spring tempered.
Fig. 18-is a perspective view of the spring knuckle. c is the stud, that is.
screwed to the bottom of the case, and projects a little over the spring, and is
to prevent the case being opened too wide, so as to strain the spring. Fig. 19
is a side view of this stud. d,. d, is the joint or knuckle of the case.
My Invention further consists of a new mechanical arrangement and:
combination of works. applicable to all purposes where the locking or
unlocking of an alarum is required, and also to the setting off the striking
part of a clock to strike the hours and quarters, if required. Fig. 20
represents what is usually called the dial work of the watch, to which my
Invention is applied: And, first, as respects the alarum part: a is the alarum
snail, the back arbor of which goes through. both of the movement, or which
plates the front arbor comes through the centre of the alarum dial a, Fig. 27,
and carries the alarum hand. On the end of the back arbor is fixed a milled
head or nut, which coming close to the plate prevents the snail from rising
out of its place, and serves also to set the alarum hand, as it will be
evident that the alarum hands may be moved to any part of the dial by the
milled-head, a detached view of which, with the snail, is seen at Fig. 21. The
use of the notch on the edge of the snail, with one side perpendicular to the
centre' and the other in a slanting direction, will be explained hereafter. b is the
alarum wheel, which is the same size and number of teeth as the hour wheel, h,
the teeth of which take into tho hour wheel teeth, and consequently perform a
revolution in the same time, which is twelve hours. It is here represented as
pierced, to shew the action of the unlocking lever upon the alarum snail; it
goes upon the front: arbor of the alarum snail, and is prevented from moving
too easily on the arbor by means of a circular spring which presses against the
arbor, as shewn in the detached alarum wheel at Fig. 22. c, c, is the unlocking
lever, the curved point. of which rests on the edge of the alarum snail, and the
tail lays close to the neck of the pendant. It is kept in this position by means
of a spring d, which presses against a small projecting arm of the said lever.
Now, it must be evident that as the alarum wheel is fixed pretty tight on the
arbor of the snail it will carry the snail along with it, so that by the going of
the watch, the notch in the edge of the alarum snail will be brought round to
the curved point. of the unlocking lever every twelve hours, and as soon as the
perpendicular side of the notch passes the curved, point of the unlocking lever

page_text: it is forced into the notch by means of the spring d, and the tail of the lever is
thrown out from the pendant, but the sloping side of the notch raises the lever
again to its former position. In the next place, the arrangement for setting-off
the striking part of a clock are as follows:-e, Fig. 20, is a pinion of the
same number as the common pinion, the arbor of which goes through both
plates, and has a milled head on the end of the arbor, exactly the same as the
arbor of the alarum snail, this pinion is connected with the minute wheel
9 by means of an intermediate wheel f, which may be cut in any number of
teeth that may be required, as it is only designed to change the direction of
the pinion e. It must be evident that the pinion e will perform a revolution
in the same time as the common pinion, which is an hour. To the pinion é
is attached. an arm, with a pin near the point, that takes under the lower
arm of the clock discharger h, and lifts it every time it comes round; (it is
represented in the Drawing as partly lifted,) but when the lower arm of the
clock discharger falls off the pin in the arm of the pinion, the upper arm of
the discharger is brought back to the neck of the pendant by means of a
spring k, which presses against a short projecting arm of the discharger. By
means of the milled head on the end of the arbor of the pinion e, motion may
be communicated to the common pinion and by that means the watch may be set
to time. But to prevent any accident by moving the minute hand back past
the hour, I make the lower arm of the clock discharger, as, represented at
Fig. 28, which is on the same principal as the passing spring of a chronometer,
and will let the pin in the arm of the pinion e pass backward without moving
the discharger. The alarum dial is a small dial, the same size as that of the
seconds circle, and is fixed to the alarum wheel by means of a small pipe, that
projects from the centre of the alarum wheel, and fits tightly into the centre
of the dial. The dial is painted like a small watch dial, with the hours as
represented at Fig. 27; and there is a circular opening in the watch dial,
through which the alarum dial is seen, as at a, Fig. 27. The alarum hand must
be put on in that position that it will point exactly to the centre of the
pendant at the time. the unlocking lever falls or is thrown out from the
pendant, and when the twelve marked on the alarum dial stands in the centre
of the pendant the hour and minute hand should be put on so as to point in
the same direction, which will be twelve o'clock. Now it must be seen that
when the minute hand has made one revolution and. again points to tlie
pendant, the hour hand will point to one o'clock, and the one on the alarum
dial will point to the pendant, and so on with all the other hours, so that
by fixing a point in the watch dial opposite the centre of the pendant it
will point to the hour of the day -on the alarum dial,. and as the alarum
.

page_text: hand and dial move together, and the unlocking lever is thrown out whenever
the alarum hand points to the pendant, it must be evident that whatever
time the alarum hand is set to on the alarum dial the unlocking lever will
be thrown out from the pendant exactly at the same time. I also put a slider
on the edge of the case on the same side of the pendant as the unlocking
lever, so that when the alarum is not wanted it may be pushed close up to
the tail of the lever, and take the pressure of the curved point off the edge of
the alarum snail, that it may be no hindrance to the going of the watch.
I shall now proceed to describe the manner in which the alarum and clock
movement is operated upon by means of the unlocking lever and clock dis-
charger. Before which, I would observe that I have given a section or side
view of the alarum and clock movement in its detached state together with the
index plate at Fig. 24. The frame a, a, that contains the train of wheels, is
made smaller than the index plate 6, in order that the bell c, c, may cover the
works. The bell is screwed to a stud d, that is fixed in the centre of the
upper plate; there are are two holes made through the bell opposite the barrel
arbors, that the maintaining power may be wound up either by a detached key,
or by milled heads screwed upon the arbors, as represented at e, e. The
alarum consists of a going barrell, with a steel wheel at one end, which is cut
in ratchet teeth for the purpose of working the hammer, and at the other end
is the great wheel that drives the train. The train generally consists of three
wheels and four pinions, but I sometimes make the alarum movement with a
contrite wheel on the end of the going barrel, which drives a pinion with a
balance or crown wheel; this, acting in a verge, works the hammer fixed on the
arbor of the verge. The clock has also a going barrel, with the same number
of wheels and pinions, together with its striking hammer and its spring, which
are arranged in the same manner as most modern striking clocks. The two
wire tails g, g, that project through the index plate 6, are connected, one with
the alarum locker and the other with the hour regulating lever, which will
be better seen at Figure 25, where a is the hour regulating lever, which acts
on a pivot screwed into the plate;. b, its wire tail; is the regulating spring,
which is made very thin close to where it is screwed to the lever, and at the
other end is a hook, which takes hold of the star wheel e and moves it one
division every time the lever is lifted by the clock discharger. A side view of
this spring is shewn at Fig. 26). From the shape of its hook it will be evident
that when the regulating lever is brought back by means of its spring c after
the clock has struck, the sloping part of the hook coming in contact with the
tooth of the star wheel (which is bevelled on that side), it acts as an inclined
plane, and raises the spring, so that the hook will pass over without
".

page_text: moving the wheel, and be ready to move round the star wheel another division
whenever the lever is again lifted. The jumper d, with its spring, is to pre-
vent the star wheel from moving more than one division at a time. The star
wheel e is cut in twelve teeth, and is fixed on a hollow cylinder, together with
the clock snail g, at a little distance from each other, and revolves on a pivot
that is screwed into the centre of the plate; the cylinder is of such length as
to project a little through the index plate, and carries the hand, shown at a
Fig. 28. The rack hook k has a curved tail that comes in contact with a
short arm of the regulating lever, by which means whenever the lever is lifted
by the clock discharger the hook is raised out of the rack-i, and the rack is
forced back by means of its spring k, and its arm falling against the snail
regulates its striking. n is the gathering pallet that winds up the rack as the
clock strikes. There is a pin at pin the regulating lever, that projects through
an opening in the plate, and comes in contact with a pin in one of the wheels
whenever the lever is lifted, and prevents the clock from striking until the levers
fall back. is the alarum hammer, and s its spring. Now, if it is required
to make the clock to chime the quarters, nothing more is necessary than to
cut the star wheel in-48, and make the clock snail in the same way as the
snail of most of the modern clock watches that chime the quarters; and also
make the pinion e in the watch, shewn at Fig. 20, with four arms instead of
one, and it will strike the quarters as it goes. It may also be made to repeat
the hours by forming a connection from the rack hook to a stud or knob at
any convenient part of the stand, as at 6, Fig. 27, which may be depressed by
the finger or any other means, and disengage the rack hook. The alarum
'locker is made with an.elbow, as shewn by dotted lines at t, Fig. 25.; it is fixed:
on an arbor, which is pivotted, and acts inside the movement plates, a little of
the edge of the plate being filed away to allow the wire tailu.to pass through the
index plate; at the other end of the locker is a pin that rests against the edge
of the fly wheel o, which has also a pin in its edge, and is likewise represented
by dotted lines; it is kept in this position by means of a fine.spring w, that
presses against the lower arm of the locker, so that the alarum cannot go off
until the pin of the locker is removed from the edge of the wheel, which is
.done every time the unlocking lever falls out from the pendant as it comes in
contact with the wire tail u of the alarum locker, and lifts it from the fly
wheel o: The way in which the watch is attached to the alarum and clock
movement is as follows:-Fig. 28 is a stand, made of wood or metal; about an
inch thick, (but they may be made in any other form); the alarum and clock
movement is let into the back of the stand about half way through, with the

page_text: index "plate to shew in front, as at Fig. 28; a being a small dial marked in
the middle of the plate and the hours painted on it, as represented. The
opening in front is made to suit the size of the watch case when lined with
leather or velvet; the bottom of the watch case is kept at a little distance
from the index plate by a ring of leather 6; so that it shall not come foul of
the index hand. The two wire tails of the alarum locker and regulating lever
project into the opening through the index plate over the twelve, and come
a little past the pendant, and, at such distances from each other as to allow
the neck of the pendant to go between them; there is also a sink cut for the
nob of the pendant, so that the watch shall always go in the same position.
Now, to attach the watch so that it shall strike the hours right, the hand must
be moved in the direction of 1, 2, 3, &c. to the hour it struck last. Suppose, for
example, the time by the watch is half-past twelve, the hand is right as repre-
sented at a, Figure 28; but if the time by the watch is past three, the hand
must be put to three; and when the watch is attached, as represented at
Fig. 27, the clock will strike the hour as the watch goes. When the alarum
is to be used, nothing more is necessary but to set the alarum hand to the
time at which it is to go off on the alarum dial, place it in the stand, and wind
up. the alarum movement.
The points upon which I ground my exclusive right and privilege to the
foregoing Invention are,―
First, the new combination of mechanism by which the winding is effected.
2dly, the alarum snail and wheel in connection with the unlocking lever
and its spring.
Thirdly, the arrangement of mechanism for discharging the clock, as shewn
in Fig. 20, in connection with the hour regulating lever, shewn at a
Fig. 25.
Fourthly, the arrangement of mechanism connected with the going fuzee
and its spring detant.d, Fig. 16.
And, lastly, the method of opening the bottom of the case by the intro-
duction of a spring knuckle, whereby the outside joint of the case is dispensed
with.
In witness whereof, I, the said Isaac Brown, have hereunto set my
hand and scal, this Twentieth day of November, in the year of our
Lord One thousand eight hundred and twenty-nine.
(L.S.) BROWN.
ISAAC (L.S.)

page_text: AND BE IT REMEMBERED, that on the Twentieth day of November,
in the tenth year of the reign of His Majesty. King George the Fourth, the
said Isaac Brown came before our said Lord the King in His Chancery,
and acknowledged the instrument aforesaid, and all and every thing therein
contained and specified, in form above written. And also the instrument
aforesaid was stamped according to the tenor of the Statute made in the fifty-
year of the reign of His late Majesty King George the Third.
fifth
Inrolled the Twentieth day of November, One thousand eight hundred
and twenty-nine.