Year: 1886

page_text: [Communicated from abroad by SWEN P. SANDMARK, of Ishpeming, in the County
of Marquette and State of Michigan, United States of America.]
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Win. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby leclare the nature of this Invention to be as follows:-
way.
The object of this Invention is to provide a clock-movement frame which will
permit of removing either of the spring-arbors with their springs without disturbing
the other portion of the movement or removing all the gearing of either side without
disturbing the central portion of the movement. The back plate is of the usual
description, and receives the pivots of the various arbors of the movement in the usual
The front plate is divided into five pieces-the central part which is supported
by studs from the back plate in the usual way, upper and lower lateral parts at one
side of the central portion supported by studs from the back plate, and upper and
lower lateral parts at the other side of the central part supported by studs from the
back plate and by screws passing through the inner ends of the lower lateral parts
into the central part and the upper lateral parts. The lower lateral parts are provided
with apertures for receiving the outer ends of the spring arbors, and they are off-set
so as to make lap joints, the various parts composing the front plate lying all in the
same plane. When it is desired to remove the spring arbor and spring at the striking
or time side of the movement, the screws are loosened, when either of the lower
lateral parts of the plate may be readily removed, permitting of taking out the spring
arbor and spring without disturbing other parts of the clock movement. To remove
all the gearing of one side of the movement, the upper and lower plates will be
removed together.
The improvement is not limited or confined to any particular form of clock move-
ment frame nor to any particular way of dividing the frame as these may be varied,
according to circumstances. It is obvious that the improvement may be applied to
the back plate of the frame instead of the front if desirable.
A. MELVILLE CLARK.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: COMPLETE SPECIFICATION.
An Improved Clock-movement Frame.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of this Invention (a communication to me from
abroad by Swen P. Sandmark of Ishpeming in the County of Marquette and State of
Michigan United States of America), 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 this Invention is to provide a clock movement frame.which will
permit of removing either of the spring arbors with their springs without disturbing
the other portion of the movement, or removing all the gearing of either side without
disturbing the central portion of the movement.
The Invention consists of the construction and arrangement of parts as will be
hereinafter fully described and specifically pointed out in the claim.
Reference is to be had to the annexed drawings forming a part of this specification
in which figure 1 is a front elevation of the improved clock movement frame with a
portion thereof removed. Figure 2 is a detail view of the removed portion of the
frame. Figure 3 is a side elevation of the frame, and figure 4 is a transverse section
taken on line X--X in figure 1. Similar letters of reference indicate corresponding
parts in the different figures of the drawings.
The back plate A is of the usual description and receives the pivots of the various
arbors of the movement in the usual way. The front plate B is divided into five
pieces the central part C which is supported by studs ab from the back plate in the
usual way, the lateral parts D D¹ supported by studs ce from the back plate, and the
lateral parts E El supported by studs dd from the back plate and by screws ee
passing through the inner ends of the parts. E E' into the central part C and the
lateral parts D D'. The parts E E' are provided with apertures for receiving the
outer ends of the spring arbors. The parts E E' are off-set, so that the portions
which overlap the central part C and the lateral parts D D' may be secured by the
screws e e in the manner described with the body of the parts E E¹ lying in the same
plane as the other portions of the front plate B.
When it is desired to remove the spring arbor and spring of the striking or time
side of the movement, the screws ee are loosened, the nut on the stud or dis
loosened when the part E or E¹ of the plate may be readily removed permitting of
taking out the spring arbor and spring without disturbing other parts of the clock
movement. To remove all the gearing of one side of the movement, the plates D, E,
or D E¹ will be removed together, allowing the screw e which clamps the parts 1) E
together to remain in and removing the nut from the studs cc. When it is desired
to remove the front plate entire, the screws ee will not be loosened but the entire
plate will be taken off after removing the nuts from the studs a ce¹ d d and taking
the pin out of the stud b.
C

page_text: The improvement is not limited or confined to any particular form of clock move-
ment frame, nor to any particular way of dividing the frame, as these may be varied
according to circumstances. It is obvious that the improvement may be applied to
the back plate of the frame instead of the front, if desirable.
Having now particularly described and ascertained the nature of the said Invention,
and in what manner the same is to be performed, I declare that what I claim is ;-
A clock movement frame, formed of the back plate A, the central plate section C,
supported from the back plate, and the lateral plate sections D D₁, E E', secured to
each other and to the central section C, and supported from the back plate by studs,
substantially as shewn and described.
A. MELVILLE CLARK.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.