Improvements Appertaining to the Pendulums of Clocks or like Synchronal Mechanism.
Year: 1897

page_text: Date of Application, 3rd May, 1897
Complete Specification Left, 2nd Feb., 1898-Accepted, 3rd May, 1898
PREVIONAL DECITICATION.
Improvements Appertaining to the Pendulums of Clocks or like
Synchronal Mechanism.
I, JAMES PRESTON, of 36, Bradshawgate, Bolton, in the County of Lancaster,
Watchmaker and Jeweller, do hereby declare the nature of this invention to be as
follows, that is to say :-
In the production of clock mechanism, particularly of the class that is made or
constructed to be readily detached from its bearings or supports in its casing and in
which the bearings for the pendulum are mounted on the parts secured to said
casing, considerable difficulty is encountered when it is desired to place the pendulum
into, or take it out of, its working position, the clock mechanism on all such occa-
sious having to be removed or displaced to allow this mounting and displacement of
said pendulum. Further in connection with similarly constructed clock mechanism
to as well as in connection with that above described, considerable risk of damage to
the spring carrying the pendulum as heretofore constructed when said clocks are
handled by inexperienced peoplo as also when packed in cases for transit and other-
wise, is entailed by the weight of the articles coupled to said springs or by other
forces acting thereon, being encountered.
To obviate these defects by producing parts that shall efficiently perform the
functions desired of them, is the object of this invention, and this I attain by
mounting the bearings for the pendulum spring upon the pallet cock or support for
the pallet spindle instead of upon the framework secured to the clock casing, the
arm taking hold of this spring by suitable hook or other connections extends down-
wardly somewhat parallel with the arm secured to the pallet or its spindle, in order
that it may reach into contact with the screw adjusting device on the pallet arm or
pallet crutch while its outer end has an appropriate hook or other formation to
receive the pendulum proper.
In the extension piece of the pendulum a quadrant slot is made so that a screw or
projecting piece from the crutch of the pallet may pass through it to keep it in
position by which means whenever the extension piece of the pendulum is tampered
with or whenever any force acts upon it to tend to dislodge it, instead of said force
being withstood by the pendulum spring as beretofore, it is withstood by the pin on
the pallet crutch.
Further should it be thought desirable to remove this strain from the pallet crutch,
n suitably formed bridge or stop piece may be secured to the framework of the clock
for the pendulum's extending piece to pass through, while appropriate projections
are formed on this extending piece to come into contact with the bridge or like
fixing on the framework when any undue force is exerted over same by which means
the spring supporting these pendulum parts is protected. And when this device is
employed a screw or other stop piece is secured to the pin in the pallet crutch
which comes through the slot in the extending part of the pendulum so that this
latter is prevented from being dislodged or from disengaging with the
former.

page_text: When either of the foregoing devices are employed they are so formed and con-
structed as to allow the several motor parts to perform their regular functions
uninterruptedly.
As protection against any damage being done to the extension parts of the
pendulum when said pendulum proper is removed and the clock or like mechanism is
packed in cases or otherwise, I fix upon the clock's framework an appropriate spring
or other holding catch to engage with said extending part and so hold same and the
parts thereto coupled from being moved to be damaged.
Dated th
SML 1005
Improvements Appertaining to the Pendulums of Clocks or like
Synchronal Mechanism.
I, JAMES PRESTON, of 56, Bradshawgate, Bolton, in the County of Lancaster,
Watchmaker and Jeweller, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, that is to say :-
In the production of clock mechanism particularly of the class that is made or
constructed to be readily detached from its bearings or supports in the casing
and in which the bearings for the pendulum are mounted on the parts secured to
said casing, considerable difficulty is encountered when it is desired to place the
pendulum into or take it out of its working position, the clock mechanism on all such
occasions (when of the class described) having to be removed or displaced to allow
this mounting and displacement of said pendulum. Further in connection with
similarly constructed clock mechanism to, as well as in connection with, that above
described, considerable risk of damage to the spring carrying the pendulum (as here-
tofore constructed) when said clocks are handled by inexperienced people as also
when packed in cases for transit and otherwise, is entailed by the weight of the
articles coupled to said springs or by other forces acting thereon being encountered.
To obviate these defects by producing parts that shall efficiently perform functions
desired of them, is the object of this invention and this object I attain as
hereinafter described and as illustrated by the accompanying sheets of drawings, in
which :-
Fig. 1 is a view of the interior part of a clock showing the part where the
pendulum is mounted.
Fig. 2 is an elevation of the parts as seen in the direction indicated by the
arrow a.
Fig. 3 is a perspective view of the several parts shown by Figs. 1 and 2.
Figs. 4, 5 and 6 are similar views to Figs. 1, 2 and 3 respectively, but illustrate an
alternative arrangement hereinafter explained.
Fig. 7 is a drawing in detail hereinafter explained.
In carrying my invention into effect I mount the bearings 6 for the pendulum
spring c upon the pallet cock d, which supports the pallet spindle e instead of upon
the framework secured to the clock casing. The arm c¹ takes hold of the spring c
(which is of the usual formation) by suitable hook or other connections c² and extends
downward somewhat parallel with the arm f¹ secured to the pallet for its spindle e
in order that it (said arm c¹) may reach into contact with the screw adjusting device g
(which is of the old and well known construction extensively used in the class of

page_text: clocks to which my invention is applicable), while its outer end has an appropriate
hook or slot formation c³ to receive the pendulum h, the lower end of which is not
shown.
In the extension piece c¹ of the pendulum h, a quadrant slot is made so that a
screw or projecting piece m from the crutch f¹ of the pallet ƒ may pass through it to
keep it in position by which means whenever the extension piece c¹ has any strin
put or force acting upon it as heretofore it is withstood by the pin m.
Further should it be thought desirable to remove this strain from the pallet
crutch a suitably formed bridge or stop-piece n may be secured to the framework
of the clock for the part c¹ to pass through while appropriate projections p are formed
on this piece c¹ to come into contact with the bridge n when any undue force is exerted
over said piece c¹ by which means the spring c is protected. And when this device is
employed a screw 8 or other suitable stop-piece is secured to the pint (the functions
of which are exactly the same as those of the pin w, Figs. 1 and 2 and are old and
well known) in the pallet-crutch f¹ which comes through the slot n¹ in the part c¹ so
that this latter (part c¹) is by said screw 8 prevented from being dislodged or from
disengaging with the said pallet-crutch f¹.
As will be seen neither of the foregoing devices interferes with any of the several
motor parts but freely allow them to perform their regular functions.
As protection against any damage being done to the part c¹ when the part h is
removed therefrom and the clock or like mechanism is packed in a case or otherwise,
I fix upon the clock's framework an appropriate spring or other holding device w to
engage with said extending part c¹ and so hold same and the parts thereto coupled
from being moved to be damaged.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In combination with pendulum mechanism of the class described, means whereby
the spring supporting said pendulum is protected against undue strains substantially
as herein specified.
2. In pendulum mechanism of the class described the several parts in combination
the same being constructed and arranged to operate substantially as herein specified
and as illustrated by Figs. 1, 2 and 3.
3. In pendulum mechanism of the class described the several parts in combination
the same being constructed and arranged to operate substantially as herein specified
and as illustrated by Figs. 4, 5 and 6.
4. In pendulum mechanism of the class described means whereby certain of the
parts may be held in position when the other parts have been displaced substantially
as herein set forth.
DL
JAMES PRESTON.
Per Samuel Hey,
Agent.