IMPROVEMENTS IN REPEATING ATTACHMENT AND MECHANISM FOR WATCHES AND OTHER TIME-PIECES
Year: 1884

page_text: TRUVIDIONAL
I WILLIAM PHILLIPS THOMPSON, Fel Inst. P.A., of the Agency for Foreign
Patent Solicitors, 6 Lord Street Liverpool, in the county of Lancaster, and
823 High Holborn in the county of Middlesex, Civil Engineer do hereby doclaro
the nature of the said invention for "IMPROVEMENTS IN REPEATING ATTACHMENT
AND MECHANISM FOR WATCHES AND OTHER TIME-PIECES" (a communication from
abroad by Frederick Terstegen of Elizabeth in the county of Union, and state of
New Jersey one of the United States of America, Watch maker) to be as
follows:-
"
The nature and object of the first part of the invention is:-
First: To provide a repeating attachment for watch movements, whether of
American, Swiss or other manufacture, and whether key or stem winders, which
shall be applicable to the said movements. This part of the invention consists in a
repeating attachment made entirely separate from the watch movement, and with
all the pieces of which it is composed, made and arranged to connect with each
other operatively outside of the movement, and adapted to be connected with the
time mechanism.
Second: To place a repeating attachment or mechanism in a watch on the back
of the movement; This consists in utilizing the space between the back cap of the
case and the movement as a receptacle for the repeating mechanism, and in placing
the bell wires, hammers, racks and other parts of the repeating mechanism in the
said space.
Third: To arrange the repeating mechanism or attachment so that it can be
applied oither to the front or back of the watch movement, and this consists in
making the repeating mechanism so that its parts connect with each other on the
exterior surface of the front or back plate of the movement, and in connecting the
snail with the time train outside of the movement,

page_text: Fourth: To provide a repeating mechanism that can be seen and examined, and
if necessary removed from the watch without taking the movement apart or
stopping the watch; and this consists in arranging the repeating mechanism on
the exterior surface of tho watch movement, and in such a manner that all parts
thereof are exposed when the case is opened, and the said parts or any of them
can be taken off without disturbing the time movement or stopping the watch.
Fifth: To provide a repeating attachment that can be manufactured completo
for different classes of watches without reference to peculiarities in the con-
struction of the time movement; and this consists in making the several parts of
the repeating mechanism, namely, the striking rack hammers, bell wires, snail
pieces, anails, regulating wheels, star wheel, and spring, in such a manner that
they connect with each other operatively on one plane or surface of the watch
movement.
Sixth: To use the space above the back of the movement under the back of the
watch case for certain parts of the repeating mechanism, and this consists in
placing the striking rack and snails above or over the watch movement, and under
the back cap or cover of the case.
Seventh: To avoid the use of a number of separate parts for actuating the
striking devices, and this part of the invention consists in the use of a single striking
rack, having certain movements whereby its teeth engage the clicks of the
striking hammers, in such a manner that the hours and quarters, or hours, quarters
and minutes or other divisions of the hour aro struck by the said striking rack.
The motions of the striking rack whereby this result is obtained, consist of a
motion on the pivot a vibrating motion, and a motion at right angles to the
vibrating motion. By the first motion the clicks are engaged by the teeth of the
vibrating, striking rack, and the hammers are operated; by the second motion
the rack is raised and lowered so as to engage successively the click of the hour
striking hammers and the clicks of the hammers which strike the divisions of
the hours.
Eighth: To adapt the repeating mechanism to bo set without the use of a slido
or push pin placed permanently in the caso and thereby permit the repeating
mechanism to be placed in any watch case, this part of the invention consists in
connecting the devices by which the repeating mechanism is set directly with the
repenting mechanism, through a slot in the case.
Ninth: To strike the hours or the hours and quarters by the direct or positive
action of the striking rack, and it consists in arranging the rack so that it will
adjust itself and actuate the striking devices when moved by the setting or
operating devices.
Tenth: To simplify the construction of the snail by which the proper adjustment
of the striking rack is obtained, and this consists in dispensing with the stepped
snail heretofore used, and substituting therefor a star shaped snail.
Eleventh: To regulate the striking rack by its movement in different planes in
addition to its vibrating movement, and this consists in providing devices for each
division of time which, when they come in contact with the snails, cause the rack
to change the planes of its movement, and thereby actuate the striking devices the
proper number of times.
Twelfth To avoid a complicated construction of the minute striking mechanism,
and this consists in regulating the striking of the minutes by the movement of the
minute snail piece in the direction of the movement of the ruinute snail, instead of
against the same as heretofore.
t
Thirteenth: To provide a snail adapted to regulate the striking of the minutes
by raising the striking rack out of engagement with the striking devices, and this
consists of a snail constructed so that when the pioce comes in contact with it, tho
said piece and with it the rack is raised up so that the rack is out of the plane of
the click, and consequently avoids the click in its further movement.

page_text: Fourteenth To provide a device for regulating the striking of the minutes [so
arranged that when the proper number of minutes have been sounded, it throws
the striking mechanism out of connection with the hammer click.
Fifteenth: To place the snails in the back of the watch movement, and adjust
the same by the time train. It consists in connecting the snail by suitable gearing
or wheels with the time train, either from the centre post on the back of the move-
ment, or the centre post or hour wheel on the front of the movement by suitable
wheels connecting through the movement.

page_text: COMPLETE SPECIFICATION.
"1
I, WILLIAM PHILLIPS THOMPSON, Fel. Inst. P.A. of the Agency for Foreign
Patent Solicitors, 6 Lord Strect, Liverpool, in the County of Lancaster, and
823 High Holborn, in the County of Middlesex Civil Engineer, do hereby declare
the nature of the said invention for "IMPROVEMENTS IN REPEATING ATTACHMENT
AND MECHANISM FOR WATCHES AND OTHER TIME PIECES (a communication from
abroad by Frederick Terstegen of Elizabeth in the County of Union, and State of
New Jersey, one of the United States of America, Watch makor) 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 striking watches and other timepieces, and particularly
to that kind of striking watches wherein the time is struck and repeated at will
at irregular intervals. The invention also relates to the striking or repeating
mechanism.
The objects of that part of the invention which relates to the striking
watch are:
First: To place the repeating or striking mechanism in regular made watch
movements either key or stem winders, instead of distributing the striking
mechanism in about and around a specially made watch movement, and this consists
in arranging the parts of the repeating or striking mechanism within the watch
case, but over or outside or separate from the time movement, so that the striking
mechanism can be connected with or detached from the time movement, without
disturbing the mechanism thereof.
Second: To utilize the space between the back of the time movement, and the
cap or cover of the caso, as a receptacle for the repeating mechanism; and this
consists in placing the striking rack and other related parts in or over the back
plate of the time movement and under the cap or cover of the case.
Third: To provido a repeating mechanism or attachment for watches and other
time pieces that can be manufactured complete for different classes of watches, and
adjusted for placing in the watches and connecting with the time mechanism, and
this part of the invention consists in connecting together the several parts of the
repeating mechanism in the relation they are to occupy in the watch, so that an
operative repeating mechanism or attachment is provided ready for connection with
the time movement.
The object of that part of the invention which relates to the striking or repeating
mechanism is to simplify the construction of the said mechanism and to reduce
the number of parts thereof, and this part of the invention consists in using ono
rack for striking the hours and its divisions of quarters, minutes, etcetera, also in
dispensing with the "surprise" which forms part of the repeating mechanism
heretofore known; also in a minute snail and devices for striking the minutes of
simpler construction than heretofore employed, and lastly in making the parts of

page_text: "
the mechanism interchangeable, by cutting them from sheet metal by means
of dies, and other details of construction which will be fully described hereafter.
In the accompanying drawing:
Figures 1 and 1d represent the improved repeating mechanism and attachment
applied to the back of variously constructed watch movements.
Figure 1 shows the improved minute snail and minute piece detachod and
enlarged.
'
-
Figure 1b shows the repeater plate detached from the movement, and the under-
side thereof.
Figure 1 shews the repeating attachment connected with a full plate time
movement in section,
Figures 10 and 1 show another mode of connecting the repeating attachment
and mechanism with the time movement.
Figure 2'shows the repeating mechanism placed directly on the back of the watch
movement.
Figures 2ª 2b-show the gearing, bridge and connecting wheels.
Figure 2 is a part of the front plate of a watch, showing the connection of the
repeating mechanism with the minute wheel of the time train.
Figure 3 represents another construction of the repeating mechanism.
"
Referring to the drawings: A represents the back of a watch movement the
regulator bridge and balance wheel being exposed, and the case indicated by dotted
lines in some of the figures and by solid lines in others. B is a repeater plate to
which the repeating mechanism is attached, this plate is placed in the back of tho
movement, and is provided with two or more screw holes which correspond in
position with the posts, or screw holes in the watch plate or bridges, so that two
or more of the screws which fasten the movement together may be utilized to
fasten the repeater plate to the movement. The plate B has a key-hole at o and
an opening a to give space for the regulator bridge and balance wheel. The shapo
of the opening a may be varied to suit different movements. The essential parts
of the profile of the opening are marked a' a' a³. These parts by their shape and
position give place for the regulator bridge and regulator which are placed
differently in different movements. In some tho regulator lies over the bridge, in
others it projects towards the opposite side of the movement. Thus, Figures 1
and 2 represent respectively the position of the regulator and bridge in "Elgin
and "Waltham" movements. In the first the regulator lies over, the bridge, in the
latter it projects in a direction opposite that of the regulator. Consequently in
the "Elgin" movement, the regulator and bridge both enter the part as of tho
opening, while in the Waltham" the bridge enters a³, and the regulator a³. The
position and shape substantially of these cuts or openings are therefore necessary
to the plate to adapt it to fit onto the modern watch movements. The snails are
placed between the centre of the movement and the periphery on one side and at
about the opposite side the rack is placed, and where the plate is used the snails
adjoin the opening a². The quarter snail not being placed on the centre post, as in
repeaters of the ordinary kind but apart therefrom, and connected with the time
train by additional wheels, as hereinafter described, the "surprise" which forms
part of the ordinary repeating mechanism is dispensed with. The function of the
'surprise" is this: At the full hour the longest step of the quarter snail, which
latter in all ordinary repeaters is placed on the centre post, is not in line with the
quarter piece, consequently if the repeater were struck on the full hour the quarter
piece would be moved against the step adjoining the longest step, and quarters
would be struck, although none were in the hour. To prevent this an additional.
long step called the "surprise" is placed loosely on the post, which has a slight
independent movement produced by the teeth of the star wheel when moved
suddenly by the escapement spring, by which it is moved ahead of the long step of
the snail and stops in position to prevent the quarter piece from moving. In the
present invention the quarter snail being disconnected from the centre-post and

page_text: operated by a train the surprise is not required, as the quarter snail is moved
sufficiently far every hour to stop the quarter piece at the proper time.
Figures 1, 1d and 2 illustrate a new construction of repeating mechanism as well as
a new mode of connecting the same with the watch. These will be described first.
The lever D and striking rack E have two movements namely, a swinging or
vibrating movement on their pivot and a movement from and towards the plate.
The vibrating motion is produced by a pull D as shown, or by any other suitable
device. The movement of the lover and rack from and towards the plate is
produced by the action of the hour, quarter and minute pieces coming in contact
with the snails and spring b which tends to bear them down against the plate.
H is the hour piece, H₁ is the quarter piece, and j is the minute piece. Z is
the hour snail, Z₁ the quarter snail, and is the minute snail. GG¹ are the
hammers and ƒ ƒ ƒ" are the clicks, which operate the hammers when the
rack teeth engage the same, said clicks are arranged in different planes above
the plate. By the swinging movement of the lever and rack the hammer clicks
are engaged but by its movement from and towards the plate the number of
strokes is regulated, as the rack is caused to engage the hammer clicks in different
planes The movement of the rack from and towards the plate by means of these
pieces may be effected in many different ways, two of which are shown and will
be now described.
In Figure 1 the lever D is connected with the pull D¹ arranged to be drawn out
to set the repeating mechanism, and to be pushed in to return it to its normal
position. But a main spring may be provided to force the lever D back. The
rack E has one group of fourteen teeth and one of three teeth, separated by a
blank space. The hours and quarters are struck by the direct movement of the
striking rack and the minutes by the return movement. The hour piece H is a
pin, which projects downward and rests on top of the screw pivot head of the hour
snail, and in that position it holds the lever up and the striking rack above the
level of all the clicks fff". The quarter piece H' extends from the end of the
lever D in position to swing towards the quarter snail Z¹ when the lever is moved.
The lever D being moved in the direction of its arrow, the lever and rack remain in
their highest position as long as the hand piece H remains on the hour snail Z. The
shortest time it remains in that position is at twelve o'clock and the longest at one
o'clock. So long as the piece remains on the snail, the rack teeth pass over the hour
click the shortest time being long enough to allow the two first teeth of the large
group to pass by the click thus leaving twelve teeth in front of the click and at one
o'clock all the teeth would pass but the last one. When the hour piece drops off the
snail which it does when it reaches one of the steps, the lever and rack being pressed
by the spring drop so that the teeth of the rack will engage the hour click f. The
longer the step of the hour snail in the line of movement of the hour piece, the
greater the distance, hour piece must travel before dropping off the snail and hence
the greater number of teeth pass the click before the rack drops. It will be seen
from this that the longer step of the snail sets the piece for one o'clock and the
shortest step for twelve o'clock.
After the hours are struck the blank space between the groups passes the clicks,
and in the interval the quarter piece H approaches the quarter snail, and the first
tooth of the small group and the first of the large group are respectively carried
close to the click ff" both of which are used to strike the quarters. If there are
no quarters in the bour, the snail stops the quarter piece-and none of the rack teeth
engage the clicks but if one or more quarters have passed one or more of the two
groups of teeth engago the clicks ff" and strike the quarters by sounding two
bells alternately for each quarter then the lever is pushed or moved back to strike
the minutes.
The mechanism for striking the minutes is shown in detail and on an enlarged
scale in Figure 1ª and in connection with other parts of the repeater in Figures 1
1d and 2. It consists of a snail I placed on the staff of the quarter snail, divided
by notches into four equal steps or sections, each of which is designed to pass a

page_text: certain point in fourteen minutes the distance from notch to notch representing
fifteen minutes. The faces of the notches are beveled off to a sharp edge. The
other part of the device consists of a spring pawlj pivoted to a limb of the lever D
in such a position that when the lever is moved the free end of said pawl is carried
5. against the edge of the snail and bears against the same.
The operation of the device is as follows: The snail moves in the direction of its
arrows (Figure 1) and the pawl moves in the direction of its arrow when the lever
is moved to set the repeating mechanism. The pawl is moved the same distance
each time, but from the point to which it is carried, the distance to which ever one
) of the notches may be adjacent to the pawl depends upon the number of minutes
that have passed in the current quarter. If no minutes have passed, that is if the
time is an even quarter of an hour the pawl will be in contact with the edge or
face of the notch; if one or more minutes have passed, it will have to travel a less
or greater distance before striking the notch. The effect of its striking the edge
5 of the notch and riding up the incline is to lift the lever, with it the rack teeth are
raised out of engagement with the click, which stops the striking of the minutes.
When the lever D reached its furthest forward movement all the teeth in the larger
group were carried past the click f, which sprung back without operating the
hammer. But on the return these teeth engage the click f which extends higher
than clicks ff and cause it to operate the hammer G to strike the minutes.
There being fourteen teeth in the group, fourteen minutes can be struck, but the
number depends on the distance the pawl ; has to travel before reaching the notch, the
effect of which as before stated is to cause the lever to rise up, and throw the striking
rack above the click f. If for example it is an even quarter of an hour when the
repeating mechanism is set the pawl will be in such a position when the lever D
reaches the end of its forward movement that on the reverse, the pawl will bear
immediately against the face of one of the notches of the minute snail, and con-
sequently the lever will be raised before any of the rack teeth have time to engage.
the click. If one minute has passed it will not reach the notch until one tooth
has engaged and moved the said click and so on, the greater the number of minutes
up to fourteen over the quarter the further the pawl has to travel to reach the
notch, and the greater the number of teeth carried against the click. But if the
minutes are over fourteen, another notch is brought into position to engage the
pawl. When the lever is raised by the pawl as described the rack clears the click f¹
and returns to its normal position. To hold the minute snail when the pawl is
moved against it, a spring is employed which bears against the said snail and holds
it steady. In the present instance the gearing cap plate Choreafter described is
arranged to serve as the holding spring. For this purpose it is arranged to be held
up by the minute piece pawl, when the latter is in its normal position, which as
shown in Figure 1, is partly under the said plate. Therefore when the repeating
mechanism is set the pawl is moved from under the said plate, the latter or that
end of it which is over the snails, springs down and bearing on the snails holds
them steady until the pawl has properly set the minute rack or teeth, and at
the conclusion of the striking of the minutes, the minutes pieco being thereby
returned to its normal position the end of the plate is raised and the snails
released.
Figure 1b shows the repeater plate detached and from the under side, and
exposing the connection wheels between the staff of the quarter snail and the
pinion on the staff which is passed through the watch to the front plate.
These connecting wheels are marked xxx, the first being in the staff of the
quarter snail. This connection through the watch movement is shewn in section
in Figure 1º, where the staff S with the pinion all over the back of the movement
is shown, also the pinion all on its opposite end over the front plate and the
gearing in the front plate which connects the said pinion with the minute
wheel r.
Figure 1 represents the repeating attachment and mechanism applied to a
three quarter plate movement, but with a different mode of connecting the

page_text: repeating mechanism with the time movement. This connection is shown in
detail in Figure 1e and 1. In this case. the pinion on the quarter snail shaft
connects directly with wheel on the centre port of the watch.
Figure 2 shows the repeating mechanism placed directly on the back plate of the
watch without the intervention of the repeater plate.
Figures 2 and 2b represent different views of the gearing which connects with
a pinion on the quarter snail shaft, and regulates the intervals between the strokes,
also the gearing cap plate C, heretofore referred to as having its end over the
quarter snail utilized as a spring to hold the snail when the minute piece is moved
against it to adjust the rack to strike the minutes; also the bridge which with the 1
cap plate carries the gearing and quarter and minute snails.
Figure 2° shows a part of the front plate of the watch movement with the
connecting wheels between the minute wheels and the pinion ¹ll in the end of
staff S. This Figure and Figures 1° and 1° show the connection between the time
mechanism and the repeating mechanism in full plate watches.
.
Figure 3 represents a modification of tho repeating mechanism and a mode of
applying the same to very flat watches either to the front or back plate thereof, in
this case it being applied to the front plate. A shaft K for setting the repeating
mechanism is used. This shaft carries a beveled pinion which meshes with a
toothed wheel V on the shaft of which is a pinion engaging the lever D. The
latter carries the-quarter piece H', and the hour piece H, which projects downward
and rests on the top of the snail. The striking rack E in this case is a wheel
having pins projecting upward. The wheel gears with toothed wheel V. The
wheel E and its shaft has a slight vertical movement governed by a spring (not
shown) so that when pressed upon, it moves downward towards the plate, and
when relieved of pressure the spring throws it up to its normal position. The
object of this movement is to cause the pins to engage one or both of the bell
forks G G one of which stands a little higher above the plate than the other.
The lever D has a step'at U.
By turning, the shaft K the lever D is moved in the direction of its arrow, the
quarter piece is turned towards its snail, and the hour pieco commences to move
from the centre of the snail towards the steps of the snail. Simultaneously the pin
wheel is turned on its axis and the pins are moved against the hour bell G"
Bidewise and vibrate the same. As long as the hour piece H remains on the hour
snail the pins continue to sound the hour, but when it drops off the snail at the
step u, the lever D bears on the top of the shaft of wheel E, and presses the wheel
down and the pins out of the line of contact with bell G". The longer the stops
of the snail opposite the hour piece, the greater the number of pins carried against
the bell. After the hour strokes cease, the lever continues to move in the same
direction and when the step at u passes or drops off the shaft of the wheel, a spring
throws the wheel up so that its teeth are in position to engage both forks G GUI
and the quarters commence to strike and the striking continues until the quarter
piece is stopped by the proper step of the snail, when the lever being stopped
thereby, the further turning of the shaft K is prevented and the parts are
returned to their normal position by the main spring F, or by turning the shaft K
in the opposite direction.
It will be observed that in this case the operation of the hour piece relatively to
the snail and to the striking rack is the reverse of the device shown in Figure 1
inasmuch as the striking commences as soon as the hour pieco begins its movement
and ends when it drops off the snail,
In order that the lever D may move from and towards the plate it may be formed
into a spring near the pivot as in Figure 3 or it may be connected with the pivot
by a swivel joint, as shown in Figure 1, 1d and 2, and a spring b placed over the
joint to throw the lever down.
The main object of the repeater plate B is to furnish means by which a complete
repeating attachment for any kind of a watch movement can be manufactured
8
1

page_text: independent of the watch movement, and as a separate article of manufacture for
the trade, complete in all its parts, like the watch movement itself and adapted to
be fitted into a watch by any skilled workman.
By arranging the repeating mechanism on the back of a watch it can be placed in
or taken out of the watch without taking the movement apart. It can be examined
and if necessary removed from the watch without disturbing the movement.
The invention is not restricted to the particular construction and shape of the
plate B; nor limited to the exact form of striking mechanism herein shown and
described when applied to the back of the movement, as it will be understood from
the foregoing that one of the essential points in the invention consists in placing
the repeating mechanism on the surface of the movement, hence the invention
consists broadly in placing a repeating attachment or mechanism over or outside of
the time movement without reference to the specific devices employed to form the
striking mechanism whereby the space between the time movement and the cap or
cover of the watch case is utilized as the receptacle for the parts of the repeating
mechanism and the advantage thereby obtained.that the repeating mechanism can.
be seen and examined without removal from the watch, and can be more strongly
constructed. It is evident that if there is sufficient space on the back of the
watch movement for the whole of the repeating mechanism that is the bell wires,
hammers, and operating devices and in some cases an additional plate, that this
space heretofore nover employed for this purpose, may serve as the receptacle for the
whole or for a part of the mechanism in direct connection with the time movement.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is
1. In repeating watches, the method herein described of connecting the repeating
attachment with the time movement, substantially as specified.
2. In a repeating watch the combination of the repeating attachment mado
separate from the time movement, the time movement and devices for connecting
the repeating mechanism with the time train, substantially as specified.
3. In a repeating watch the combination of the repeating mechanism with the
time train and devices for connecting the same with the snail, substantially as
specified.
4. In repeating attachments for watches and other time-pieces, the method
herein described, of changing the strokes to indicate the several divisions of
time, which consists in giving an up and down movement to the striking rack
to cause it to engage the striking mechanism at different points, substantially as
described.
5. The method herein described of changing the strokes to indicate the several
divisions of time, which consists in giving an up and down movement to the lever
to operate the striking rack, substantially as described.
6. The method herein described of striking the several divisions of time, which
consists in the use of one striking-rack having a movement parallel to the
watch movement, and a movement to and from the same, substantially as
described..
7. The method herein described of striking the several divisions of time, con-
sisting in striking the hours and quarters by the direct or positive motion
of the striking rack, and the minutes by the return movement, substantially as
described.
8. A striking rack for repeating watches and other time pieces, adapted to strike
the several divisions of time by changing its movement to different planes above
the plate as it engages the striking mechanism, substantially as described.
9. A striking rack for repeating watches and other time pieces, having a sidewise
movement to engage the striking mechanisin and a movement from and toward the
plate to adjust itself to engage the proper striking mechanism to sound the sovoral
divisions of hours, quarters, and minutes, substantially as specified.

page_text: 10. In repeating watches and other time pieces, the combination of parts con-
sisting of lever D and its attachments, together with the striking rack, substantially
as and for the purposes described.
11. In combination with the repeating mechanism of timepieces a slide or lever
arranged to set the striking rack and regulate the retraction of the mainspring by
being drawn out, substantially as described and for the purpose set forth.
12. A slide or lover adapted to operate the striking rack back and forth by being
drawn out and pushed in the watch case, so as to act as a starting device to set
the repeating mechanism in motion, substantially as set forth.
.
13. A slide or lever arranged to be drawn or pulled out to move the striking rack
and rotract the mainspring of the repeating mechanism, substantially as described.
14. The combination of a single striking-rack having a motion parallel to the
plate of a watch and a motion to and from the same, with striking devices arranged
In different planes, so that the said rack engages the said striking devices at proper
intervals to separately strike the hours, quarters, and minutes successively, sub-
stantially as specified.
15. In combination with a striking rack adapted to engage the striking devices
in different planes a lever for operating the striking rack having a sidewise motion
and a motion from and to tho plate as and for the purposo specified.
16. In combination with the striking rack herein described, having a sidewise
motion and a motion to and from the plate, a lever operating the same having the
bour piece connected with it, cubstantially as specified.
17. In combination with the striking rack having a sidewise motion and a motion
to and from the plate a lever for operating the same having the quarter piece
connected with it, substantially as specified.
18. In combination with the hour rack herein described, a lever for operating
the same arranged and constructed to automatically change its position from and
to the plate while in motion, and having the minute pieco connected with it, sub-
stantially as specified.
19. In combination with the hour rack herein described, a lever for operating
the same having the hour, quarter, and minute pieces connected with it substan-
tially as and for the purposo specified.
20. In combination with the lever for operating a single striking rack arranged
to strike the several divisions of time, a quarter piece adapted to be carried directly
to the quarter snail by the said lever, substantially as specified.
21. The lever for operating the striking rack, in combination with an hour piece
arranged to operate upon the said lever to give it a movement to and from the
plate, substantially as described.
22. In combination with the lever for operating the striking rack arranged to
move to and from the plate, an hour piece attached to the lever and adapted to
change the position of the said lever when acted upon by the hour snail substan-
tially as specified.
23. In combination with the striking rack and lever and the hour piece connected
therewith, a snail adapted to throw the said rack out of engagement with the
striking devices when the hour piece is moved against it, substantially as specified.
24. A snail for repeating watches adapted to regulate the number of strokes of
the striking mechanism by moving the striking rack out of engagement with the
striking devices, substantially as specified.
25. The method of regulating the striking of the minutes, which consists in
moving the minute piece in the direction of the revolution of the minute snail and
against a notch in the said snail to adjust the rack for the right number of strokes,
substantially as specified.
26. The method of limiting the movement of the striking rack when striking the
minutes, which consists in moving the minute piece in the direction of the revolu-
tion of the minuto snail, and carrying the said minute piece against the face of a
notch in the snail, by which movement the minute piece is raised and thereby
throws the striking rack out of connection with the striking devices, as specified.

page_text: 27. The minute pieco ; composed of a spring pawl attached to one arm of the
striking rack lever, in combination with the minute snail and striking rack sub-
stantially for the purpose specified.
28. A minute snail for repeating watches and other time-pieces, consisting of a
disc provided with four equal sections divided by notches, in combination with
a quarter snail shaft and minute piece substantially as described.
29. The combination of the minute snail I, divided into four equal sections by
notches, and minute piece j, with the striking rack and connecting lever, substan-
tially as specified.
30. In combination with the minute snail and minute piece, a striking rack in
one piece adapted to change its position from and to the plate automatically while
moving sidewise against the striking mechanism, substantially as specified.
31. As a new article of manufacture, a plate, B, adapted to receive the various
parts of a repeating attachment to be connected with a watch-movement substan
tially as shown and described.
32. A plate B carrying a repeating mechanism and adapted to be connected with
and detached from a watch movement, in combination with a watch-movement,
substantially as described.
33. A plate B provided with an opening a and adapted to receive the several
parts of a repeating attachment, in combination with a watch movement, substan-
tially as described and shown.
34. As a new article of manufacture, a repeating attachment for watches and
other time-pieces, made separate from the watch movement, and adapted to be
attached to the same, substantially as described.
35. A repeating attachment for watches mado separate from the watch move-
ment, in combination with the plate B, adapted to be connected with the watch
movement, substantially as described.
36. A plate B of suitable shape, adapted to be connected with a watch movement
in combination with a repeating mechanism made separate from the watch move-
ment, substantially as specified.
37. A repeating mechanism for watches and other time-pieces, so constructed
that it may be attached to or detached from the movement as a whole without dis-
arranging its parts, substantially as herein described.
38. A repeating mechanism for watches, placed on the back of a watch movement,
in combination with a watch movement, substantially as herein shown and described.
39. A repeating mechanism constructed on the back of a watch movement, so
that it can be seen and examined, and, if necessary, removed without taking the
movement apart, substantially as described and shown.
40. A pull or slide for operating the repeating mechanism of a watch by being
drawn or pulled out of the watch, in combination with a watch case provided with
openings in the rim and covers of the watch case, substantially as and for the
purpose described.
41. The bell wires or forks for a repeating attachment for watches, arranged
above or over the back of a watch movement, substantially as and for the purpose
described.
42. The clicks or pawls for operating the striking hammers, fixed on different
planes above the plate in combination with a striking rack having a sidewise
inotion and a motion from and to the plate, substantially as specified.
43. A hammer for repeating attachment for watches and other time picces,
having the pawl and actuating spring made in one piece and attached directly
to the hammer, substantially as described.
44. The combination, with the repeating mechanism of a pull or slide adapted to
be drawn out through an opening in the watch case and provided with a finger
pieco movable from and toward the edge of the case, substantially as and for the
purpose described.
45. The operating device for repenting mechanism arranged on the back of a watch
movement, in combination with the striking mechanism, substantially as described.

page_text: 46. The hour snail for repeating mechanism, arranged above or over the back of
the watch movement in combination with the watch movement, substantially as
described.
47. A striking rack for repeating mechanism, arranged on the back of a watch
movement, in combination with the striking devices, substantially as described.
48. A striking rack arranged over or above the back of a watch movement in
combination with a snail and tho devices for connecting the snail with the time-
train, substantially as described.
49. A striking rack for repeating mechanism for watches, movable between the
back of a watch movement and the cap or cover of the watch case, substantially as
described.
50. The quarter snail for repeating mechanism, placed above or over the back of
a watch movement, in combination with the time-train and devices for connecting
the same, substantially as described.
51. The quarter and minute snails for repenting mechanism, arranged above or
over the back of a watch movement, in combination with the quarter and minute
pieces for adjusting the actuating mechanism for the striking devices, substantially
as described
52. The quarter and minute snails for repeating mechanism, arranged above or
over the back of a watch movement, in combination with the time-train, and
devices for connecting the same, substantially as described.
53. A minute snail revolving above or over the back of a watch movement in
combination with the minuto piece arranged above or over the back of the watch
movement, and the striking rack, substantially as described.
54. The regulating wheels or gearing for the repeating mechanism, arranged
above or over the back of a watch movement, in combination with the repeating
mechanism, substantially as described.
55. In a watch movement, a back plate having on its outer side the striking
rack of a repeating mechanism, and devices for connecting the same, with the time-
train, substantially as described.
56. A back plate for a watch movement, adapted to expose the balance wheel
and bridge, and having on its outer side the striking rack of a repeating
mechanism, and devices for connecting the same with the time-train, substantially
as described.
57. A repeater plate baving irregular openings a and cuts a¹ a², substantially as
described and shown.
58. A repeator plate B having an irregular opening a and the cut a³, substantially
as described and shown.
59. A quarter snail for repeating mechanism, arranged above or over the back
plate of a watch movement, and provided with a dovice for setting the hour snail,
in combination with the time train, substantially as specified.
60. The snails for repeating mechanism, placed on the plate B, between the
centre of the watch movement and its periphery and adjoining the cut a² of the
plate, substantially as described and shown.
61. In a watch movement a snail or snails for repeating mechanism, placed above
or over the back plato on one side between the centre of the movement and the
periphery, in combination with a striking rack placed on the opposite side of the
movement between the centre and the periphery, substantially as described and
shown.