A. CERTAIN MACHINE CALLED A TIME REPEATER TO BE APPLIED TO COMMON WATCHES FOR THE PURPOSE OF STRIKING THE HOURS AND QUARTERS
Year: 1796

page_text: TO ALL PEOPLE TO WHOM THESE PRESENTS SHALL COME, I,
CHARLES TRUSTED, of the Hamlet of Oversley, in the Parish of Arrow, in the
County of Warwick, Gentleman, send greeting.
WHEREAS. His most Excellent Majesty King George the Third, by His
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Twenty-fourth day of November, One thousand seven hundred
and ninety-six, in the thirty-seventh year of His reign, did give and grant unto
me, the said Charles Trusted, my executors, administrators, and assigns,
His especial licence, full and sole power, privilege and authority, that I, the
said Charles Trusted, my executors, administrators, and assigns, during the term
of fourteen years therein expressed, should and lawfully might make, use, exercise
and vend, within England, Wales, and the Town of Berwick-upon-Tweed,
my Invention of "A. CERTAIN MACHINE CALLED A TIME REPEATER TO BE APPLIED
TO COMMON WATCHES FOR THE PURPOSE OF STRIKING THE HOURS AND QUARTERS;"
in which said Letters Patent there is contained a proviso, obliging me, the
said Charles Trusted, under my hand and seal, to 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
one calendar month next and immediately after the date of the said recited
Letters Patent, as in and by the same, relation being thereunto had, may more
fully and at large appear.

page_text: NOW KNOW YE, that 1, the said Charles Trusted, in compliance with
the said proviso, do hereby describe and ascertain the nature of my said
Invention, and in what manner the same is performed and executed, by
the Plan and particulars thereof above described, mentioned, and set forth :-
In witness whereof, I, the said Charles Trusted, have hereunto set my
hand and seal, this Twenty-first day of December, in the year of our
Land One thousand seven hundred and ninzore.cn
CHARLES TRUSTED. (Ls.)
REFERENCES TO THE SEPARATE AND UNITED PARTS OF THE HOUR REPEATER:―
Figure 1,a perspective view of the machine when put together. No. 1, first
frame plate, with its four pillars; No. 2, barrel and arbor with a wheel fixed to
the end of it, in which are twelve pins to strike the hours, and are marked a, b, c, d,
e, f. &c, and upon the cylindric part of the barrel are twelve pins diagonally
placed, in two arrangements, to stop against a simple stud fixed in the sliding
rack, as shewn in No. 2 b, and is marked g; this stud governs the number of
strokes by stopping against each, in its respective place of the pins marked
A, B, C, D, E, F, G, H, I, K, L, M. The barrel does not go quite round
in striking the twelve strokes, indeed it cannot do so, for there is a pin put
into the end of it that comes against another pin which is fixed in the frame
plate to prevent it, and when it is required to know the hour of the night.
the person using it must lay hold of a brass wheel with a corded edge, No. 9,
which is screwed upon the end of the barrel arbor, and turn it backward till
the fixed stud above mentioned stops against such of the pins A, B, C, &c., as
corresponds with the time of night, and then turn the corded edge wheel gently
forward, the proper hour will be struck upon the ball marked 10. The pins in the
side of the barrel wheel marked a, b, c, d, e, f, &c., are what acts upon the
hammer slip marked h, in 26, and of the hammer No. 3; No. 4, second frame
plate with its pillar holes and pivot holes to receive the hammer and barrel,
and which are the only centres which act between the frame plates; No. 5, a
side plate with two holes, to be fixed with two screws to two of the pillars in
the frame plate No. 1 marked A, B; upon this side plate is a cock fixed, and
marked C; this cock has a pivot hole to receive one end of an arbor, on the
middle of which is a pinion of ten teeth, and which acts in a sliding rack of
twenty-four teeth. This number of ten teeth in the pinion is for modern or
flat watches where five turns of fusee is required; and when it is applied to
old watches where six turns of fusee is employed, for twenty-four hours going
of the watch. then a pinion of eight teeth must be had upon the middle of the
above arbor, and must act in the sliding rack of twenty-four teeth. This rack

page_text: lays across the inside of the side plate as at D, goes under the cock marked C,
to act in the pinion of eight or ten, as above; but while the rack acts in this
or that pinion of eight or ten teeth, and which is by a sliding motion, its
dependant bearings are in two slits one in each of the frame plates No. 1 and
4 marked E, E; No. 6, an outside view of the side plate where the other
pivot of the above pinion eight or ten appears at F. The diameter of this pivot
is just small enough to enter into the winder hole of the inside case or box of a
common watch, and by being slit endwise to receive the fusee square, or otherwise,
a square hole being made, for the same purpose, the watch is placed upon it; and
to keep the watch from turning round by the action of the fusee in the watches
going, there is a small piece of brass screwed through the plate into the pillar of
the frame and marked G; it has a slit made perpendicularly in it, which is wide
enough to receive the shank of the pendant, and thus the steadiness of the
watch in its position is effected. On the left-hand edge of the side plate
where the watch is placed as above, the sliding of the rack marked D is seen
and is graduated into twelve divisions for twelve hours, which correspond with
the twelve pins in the barrel as described, in No. 2, and marked from A to M.
These twelve divisions for the twelve hours are figured backward to the view,
but as the rack upon which they are engraved moves forward with the watch,
the progression is right and the figures disappear one after another, so that
when the watch has gone twelve hours, they are all hid under the side plate,
and the performance of the machine for the night ends, but the watch keeps.
going as before; the figures are engraved 8, 7, 6, 5, 4, 3, 2, 1, 12, 11, 10, 9, 8.
To set the machine to time is at going to bed, when the watch is placed as.
above directed; let its time be what it may, the rack must be slided backward
or forward as is required to make the figure of the rack agree with the hour
hand of the watch, for when once together they will keep so, but to make the
pinion of eight or ten teeth yield to the sliding of the rack, the pinion has a
hole through the center, and is put upon the arbor that receives the fusee
square, and bound on it with a slip spring the same as the twelve hour wheel,
of a common thirty-hour clock. No. 7, a brass spring screwed to the frame-
plate No. 4, to press against the barrel pivot, and thereby occasion a friction.
between the shoulder of the barrel arbor at the other end, and the frame plate,.
which friction becomes a substitute for a train of wheels and fly, and thereby
prevents the barrel moving too quick, so as otherwise it would strike
confusedly; thus far, the hour repenter.
Figure 2, a perspective view of the quarter machine when put together. The
quarter repeater, as far as the hour part of it goes, is exactly the same as the hour
part, except that the frame has three plates, as will appear. by comparing the

page_text: Figure 1 and Figure 2 together, and the hour barrel is longer to admit of a
greater length of quarter barrel which is required. After the last stroke of the
hour is struck, the hour barrel communicated the acting force to the quarter
barrel, by a pin put sideways into the inside edge of the hour barrel wheel, acting
against another pin, put radius wise into the end of the quarter barrel, and are
marked a aud y, in No. 15. When the hand brings the hour barrel back to pre-
pare it for striking, these two pins lose their contact, and the quarter barrel
is driven back by a spring acting upon a pin, which passes through the pivot
on the outside of the frame plate. and is marked b, in No. 13. or this may
be performed by a spiral spring marked 21. The quarter barrel has a small
segment, a little in imitation of a quadrant, fixed at one end, and is marked
d, in No. 12; this segment has three pins in it, which act upon the quarter
hammer slip No. 11, and while the hour is giving, this segment rests upon a
pin fixed in the frame plate marked e, in No. 12, and as soon as the last stroke of
the hour is struck, the ping, in No. 15, resumes its contact with the long pin in the
quarter barrel marked a, No. 15, and the piny drives the quarter barrel forward,
and gives the quarter or quarters in one, two, or three strokes, such as correspond
with the time of the watch. To effect the proper number of strokes, in the quarter
there is a compound stud fixed in the sliding rack, marked m, in No. 14, and is
dissected into different views. In No. 16 this stud is in three parts; the middle part
is solid and marked R in No. 19, where it is fixed to the rack, and on each side
of it are a moveable part that work upon a joint pin in two slits q, q, in No. 16,
and the holes for the joint piu are at p. p, p, p. &c., in No. 16. The use of
these moveable parts are to distinguish the different quarters; for in the
quarter barrel there is one row of twelve pins, which are placed diagonally on
the quarter barrel, No. 15, and marked 1. The use of this row of twelve pins
is, that it shall stop against a rising part of the moveable stud marked X,
No. 16, so as not to admit any quarter to be struck, till a quarter is due from
the last hour, but before it comes to the stop or step of the moveable stud
marked X, in No. 16, by depressing it, raises the other moveable stud by
means of a joint pin passing loosely through both, and marked Z, in No. 19;
but to make this motion effectual, there is a spring applyed to the inner end
of the moveable stud marked p, p, in No. 16, and is seen in an inverteri
Drawing marked 19, and the reason for the last moveable stud being raised, is.
that it shall not stop the hour barrel pin, that may by chance come against it,
and make the hour barrel strike one stroke too few. When the watch has carried
the sliding rack beyond the first quarter of an hour the pin leaves the moveable
stop marked X, in No. 16, and strikes on a stop or step fixed on the solid
stud. and markod X, in No. 16; and a view of this may be seen marked 2, in

page_text: No. 20. This admits the segment at the end of the quarter barrel to advance so
far as to bring one of its pins to slip over the tail of the quarter hammer, and
therefore, when the hour is finished striking, the segment pin strikes one stroke
with the quarter hammer, and denotes the time quarterly. When the sliding
rack is carried beyond the second quarter, the pin strikes on another step or
stop marked 3, in No. 20, which admits the segment to advance so far as to
bring two of its pins to slip over the hammer tail, and when the hour is
finished striking,, two strokes are struck with the quarter hammer, denoting
the half hour. When the sliding rack is carried beyond the third quarter, and
as such expressed by the watch, the pin escapes the stud, and suffers the
segment to advance to its extreme boundary, which is a pin fixed in the frame
plate marked e, in No. 12; and that extra latitude permits all the three pins
to slip over the tail of the quarter hammer, so that when the striking of the
hour is finished, three strokes are struck with the quarter hammer, denoting
three quarters, and in which the performance ends. It is to be observed in this
as in the hour repeater, the pinion of the teeth in that which acts in a rack
of twenty-four teeth for modern or flat watches, must in the quarter repeater
be a pinion of twenty teeth, and act in a rack of forty-eight teeth; and for old
watches a pinion of sixteen teeth and act in a rack of forty-eight teeth. The
rack in the quarter repeater may be graduated on either side, and figured the
same as in the hour repeater, and as described in No. 6.
Sealed and delivered (being first duly
Stamped) in the presence
R. H. GUARDner.
AND BE IT REMEMBERED, that on the same Twenty-first day of
December, in the year above mentioned, the aforesaid Charles Trusted came
before our Lord the King in His Chancery, and acknowledged the Specifica-
tion aforesaid, and all and every thing therein contained in form above written.
And also the Specification aforesaid was stamped according to the tenor of
the Statute in that case made and provided.
Inrolled the Twenty third day of December, in the year above written.
Twenty-third