Improvements in the Movements of Watches and other Timepieces.
Year: 1890

page_text: Date of Application, 9th July, 1890-4ccepted. 16th Aug., 1890
COMPLETE SPELETUATION.
Improvements in the Movements of Watches and other
Timepieces.
We MARCUS BENJAMIN, Watchmaker and JOHN HARDY, Jeweller both of Sydney
in the Colony of New South Wales 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 :-
This invention has been specially devised in order to produce a watch or timepiece
having but one " movement or train of wheels but having an independent contre
seconds hand showing full seconds in one beat around the face or dial as well as an
ordinary seconds hand on a seconds dial. By this invention dispensing as it does with
one movement or train of wheels a centre seconds independent" watch may be
manufactured with a reduction of say seventy five per cent. in working parts and con-
nections and so considerably reduce size and cost of the finished article.
"
These improvements in the movements of watches and other timepieces consist first
in the combination and arrangement with a third wheel driven by barrel and centre
wheels of a "centre seconds independent" (or an additional or second fourth) wheel
driven by a pinion in gear with said third wheel having elastic and frictional connec-
tion with said pinion and having means for intermittently suspending its motion and
secondly they consist in the combination and arrangement with such a centre seconds
independent wheel of governing or detaining gear in connection with the pinion of the
escapement so as to regulate the motion and beats of said centre seconds independent
wheel and hand.
But in order that this invention may be clearly understood reference will now be
made to the drawings herewith in which is illustrated a watch made according to this.
invention but from which watch ordinary and well known movements have been
removed.
Figures 1 and 2 are front and back views respectively of a watch fitted with our
improvements Figure 3 is front view with the dial plate removed and Figure 4 is
back view showing the movement-Figure 5 is a diagram and Figures 6 and 7 are
enlarged details of same while Figure 8 is a further enlarged section of the centre
seconds independent wheel and pinion.
A is case.
A¹ is
B face or dial plate. C frame or plate. D movement.
suspension ring. B₁ is centre seconds dial. B* small seconds dial. C marks the
dial side and the back side. C superposed dial side bars or cocks. superposed
back side bars or cocks. a is the barrel. bis centre wheel. c third wheel...
d fourth or seconds whoel. e centre seconds wheel. escape wheel. 9 intermediate.
wheel. pinion. i balance. ; stop bar. a¹ is barrel arbor with main spring &c..
of ordinary construction. bis pinion. cis pinion. is pinion. d small seconds.
hand. eis ring flange. e flange or cover. circular spring. e arbor or axis..
pinion. e boss. 7 tightening sleeve. e centre seconds hand. f' is pinion..
pallet. pallet staff. g¹ is pinion. ¹ engagement pin. 1 is curved point..
fulcrum. outside head.
The watch being wound up as ordinarily by a key or by a keyless winding gear
the barrel a revolves and gives motion as well understood to the pinion d² which moves
the small seconds hand d round the dial B³. One end of spring e³ is fitted in boss e
by means of a slot and the other end has firm frictional contact against the inner
periphery of ring or blank e¹ of wheel e. The barrel a also gives motion as well.
understood to pinion e and as this revolves the friction of the spring e causes wheel e
when it is freed from the other gearing to revolve and move the centre seconds
hand. The wheel e has its motion governed from the escape wheel ƒ by the
pinion a¹ intermediate wheel a ninion h and nin or lever ¹ as follows-The fourth or

page_text: seconds wheel d revolves the escape wheel by turning pinion f¹ and as a leaf or
tooth of said pinion is moved it allows pin or lever h¹ to pass and gives freedom to
wheel e which is then revolved as before described until pin or lever h¹ is again
detained momentarily or for an infinitesimably short period until allowed to pass by a
further movement of the pinion f¹ when the next leaf or tooth again releases said
pin or lever h¹. The momentary stops given to the motion of the centre seconds
wheel e by the detention of said pin or lever wind the spring as pinion e
continues to revolve and when the said pin ¹ is released the motion of pinion e' and
the expansion of the spring e revolves the wheel e with a regular rotary motion and
a regular momentary stoppage which motion is imparted to the centre seconds hand e
by way of beats during which the said hand moves the distance of a full second space
upon the dial B'. When the independent seconds are not required the stop bar jis
pushed aside by the finger nail and moving on fulcrum causes the point to move
within the passage of the pin h¹ and become a stop to the revolution of said pin h'.
The intermediate gear 9 and h will thus be held fast and will hold the wheel e
stationary in which case the spring e will wind up and revolve with the pinion the
centre seconds hand will remain at rest and the other movements of the watch will
not be in any way checked or affected.
It is to be understood that we do not confine ourselves to the precise manner and
means herein described and shown of carrying our invention into effect so long as
the nature of the same be retained nor do we confine ourselves to any kind or class
of timepiece to which the same may be applied.
Having now particularly described and explained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
clain is :-
«
First In the movements of watches and other timepieces the combination and
arrangement with the "third wheel" of an additional or second "fourth wheel" or
centre seconds independent wheel" adapted to be driven by a pinion having
elastic and frictional connection with said second "fourth wheel " and means
for regulating the "beats" or travel of said centre seconds wheel and its connected
hand substantially as herein described and explained.
Second In the movements of watches and other timepieces the combination and
arrangement with an additional or second "fourth wheel" as set forth in the preceding
claim of a cam or wing or revolving lever or pin adapted to have motion from said
second "fourth wheel and to be regularly and intermittently detained or held by a
pinion or cam on the escapement substantially as herein described and explained.
Third In the movements of watches and other timepieces the combination and
arrangement with a third wheel of an additional or second "fourth wheel" or centre
second independent wheel such as e having a ring flange such as e¹ and an arbor or
axis such as e a pinion such as e a connecting or second spring such as e³ a centre
seconds hand such as e³ and means for intermittently suspending the motion of the
said arbor or axis substantially as herein described and explained and as illustrated in
the drawing.
•
Dated this Thistinth day of May One thousand oicht hundred and ninet
Witness:
FRED WALSH, F.M. Inst. P.A.
MARCUS BENJAMIN.
JOHN HARDY.
Abel & Imray,
Agents for the Applicants.