An Improved Winding Arbor for Clocks and the like.
Year: 1891

page_text: Date of Application, 14th Jan., 1891
Complete Specification Left. 16th Nov., 1891-Accepted, 9th Jan., 1892
PROVISIONAL SPECIFICATION.
An Improved Winding Arbor for Clocks and the like.
I WILLIAM WILSON HORN of the firm of Horn & Son of 151 Strand in the
County of Middlesex Patent Agent do hereby declare the nature of this invention
(a communication to me from Floyd L. Shaw and Bradford K. Kalloch both of
Rockland State of Maine United States of America Inventor) to be as follows:-
This my invention relates to an improved winding arbor for clocks and the like
and my said invention consists of the following parts constructed and arranged
substantially as follows
A sleeve is mounted between the sides of the clock frame and is provided with an
angular or prismatic socket formed therein and within this sleeve is fitted an arbor
having a shouldered projection fitting the socket in the said sleeve. The said
arbor is provided with projecting ends having suitable bearings in the framing of the
clock the outer portion of the said arbor being squared for the winding key of the
clock.
One end of the main spring is attached to the said sleeve the other end being
attached to a hollow sleeve having a bolt passing through the perforation therein
and said bolt being secured in the framing of the clock by means of a nut or other
suitable device.
By the employment of my invention in the construction of clocks and the like
the before mentioned arbor and bolt may be withdrawn thereby permitting the
removal of the spring without detaching the sides of the clock frame.
Dated this 14th day of January 1891.
HORN & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Winding Arbor for Clocks and the like.
I WILLIAM WILSON HORN of the firm of Horn & Son of 151 Strand in the
County of Middlesex Patent Agent do hereby declare the nature of this invention
a communication to me from Floyd L. Shaw, and Bradford K. Kalloch both of
Rockland in the State of Maine United States of America Inventors 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 :-
The object of my invention is to render the mainspring and mainspring wheel
removable from the clock frame without disturbing the rest of the gearing or any
of the working parts.
In clocks now in use, in order to remove the mainspring and wheel it is necessary
to so loosen the plate on one side of the frame that the bearings of the arbors can
be lifted out, and this so loosens and disarranges the other gearing that it is
considerable and perplexing labour to replace the parts even by an experienced
workman. This is especially the case in striking clocks as the teeth of the gears
have to be adjusted to a given position in replacing in order to produce the proper
motion of the striking mechanism. Devices for removing the spring and wheel
without disturbing the other parts are desirable for the reasons above mentioned.
In the drawings,
Fig. 1 is an edge elevation of a portion of a clock-frame, showing the mainspring
mainspring-wheel and its connections, and exhibiting my improvement for readily
removing the spring and wheel from place.

page_text: IS 810e elevation of the same.
Fig. 3 is an enlarged horizontal section through the arbor of the mainspring-
wheel.
Figs. 4 and 5 are cross sections of Fig. 3, respectively, in lines x x and y y.
My invention consists, essentially, in the combination, with the mainspring-wheel
of a sleeve on which the wheel is placed, provided with a spur for the attachment
of the spring and an arbor running through the sleeve, the ends of the arbor
projecting outward, forming the bearings in the frame and also the winding stem
on one side, the whole so arranged that the arbor can be removed endwise from the
sleeve, leaving the sleeve, with the mainspring and wheel attached, free to be
removed bodily from between the side plates of the frame.
In the drawings, A A show two side plates of the frame of a clock movement.
B is the mainspring, and C the mainspring-wheel. The other gearing of the
clock is not shown being of the usual construction and arrangement.
My improvement is as follows: D is a hollow sleeve of a length just sufficient to
fit easily between the two side plates A A. On the inside of the sleeve is provided
at one end with a prismatic socket a, extending any desired portion of the length,
and having at its inner end a shoulder b, produced by contracting the bore of the
sleeve.
E is the arbor. It is provided with a prismatic portion d, that fits the interior
socket a of the sleeve, and it also has a shoulder f, which, when the arbor is inserted
in place in the sleeve, strikes the shoulder 6 of the latter. The arbor has
cylindrical journals g and a square stem h, that forms the winding stem, both ends
projecting out through the side plates and forming the bearings. The arbor is of
such diameter its whole length that upon taking out the pin c it can be drawn
endwise out through the bearings in the plate, leaving the sleeve free, and the latter
can then be removed without difficulty from the frame.
G is the ratchet wheel. As shown in Fig. 1, it is made fast to the outside of the
sleeve and has a hub i on which the driving wheel C turns loosely, being retained
in place by a washer k on the opposite side, riveted to the hub of the ratchet. A
pawl or click engages with the ratchet in the usual way. To wind the clock, the
key is applied to the winding-stem as in common clocks, and the arbor and sleeve
are turned as one fixture, and when the movement is running the arbor and sleeve
also turn together to form practically one arbor.
The above describes one form of clock in which the turning of the arbor gives
motion to the driving wheel by means of a ratchet and click, and the improvement
is applicable both to the time and striking mechanism. It is applicable also to that
class of clocks in which the arbor remains stationary while the time-movement is
running, the spring being attached at one end to the arbor and at the other to the
lug of the driving-wheel. This form is known as the "going barrel."
applicable to what are known as
66 French clocks."
It is also
K is the pillar, to which the free end of the spring is attached. It is composed
of a sleeve fitting between the sides of the clock-frame and a headed bolt L, passed
through holes in the frame and through the interior of the sleeve and secured by a
When the spring is to be removed, the nut is unscrewed and the bolt with-
drawn, leaving the sleeve K free to come out with the spring B.
nut l.
By the means before described the driving-wheel and mainspring can be readily
removed and replaced without difficulty and loss of time and without loosening the
frame of the clock-work and without disarranging the gearing. The combined
sleeve and arbor allows this separation to be made, and is much more effective than
extra plates applied to the main frame to hold the journals of the arbor.
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 a clock, the combination, with the main wheel and the spring, of a sleeve
fitting between the sides of the clock-frame and provided with a prismatic socket.

page_text: an arbor having a shouldered portion fitting the socket in the sleeve, the ends of
said arbor projecting and forming bearings in the frame and removable from said
frame to permit the subsequent removal of the sleeve and spring without detaching
the sides of the frame, substantially as described.
2. The combination, with a driving-wheel and mainspring, of a sleeve to which
one end of the mainspring is attached, said sleeve fitting between the sides of the
clock-frame and having an internal prismatic socket at one end, a winding-arbor
having a prismatic portion fitting the socket in the sleeve and cylindrical portions
serving as journals for said arbor, and a pillar to which one end of the mainspring
is attached, consisting of a sleeve fitting between the sides of the clock-frame, and
a bolt passing through said frame and sleeve and provided with a nut, substantially
as set forth.
Dated this 14th day of November 1801
HORN & SON,
Applicant's Agents.