IMPROVEMENTS IN WATCHMAN'S TIME-DETECTORS OR REGISTERING CLOCKS
Year: 1882

page_text: LETTERS PATENT to Jasper Wetter, of New Wandsworth, Surrey for an
Invention of IMPROVEMENTS IN WATCHMAN'S TIME-DETECTORS OR REGISTERING
CLOCKS Communicated to him from abroad by George Francis Ransom, of
Cleveland, State of Ohio, United States of America.
COMPLETE SPECIFICATION filed by the said Jasper Wetter at the Office
of the Commissioners of Patents on the 28th October 1882.
JASPER WETTER, of New Wandsworth, Surrey IMPROVEMENTS, IN WATCHMAN'S
TIME-DETECTORS OR REGISTERING CLOCKS Communicated to me from abroad by
George Francis Ransom, of Cleveland, State of Ohio, United States of America.
This invention relates to electro magnetic watchmen's registers and consists in
the peculiar construction of the same as will be hereinafter fully set forth and
claimed,
In the drawings Fig. 1 is a plan view of a device embodying this invention.
Figure 2 is a view in elevation of a series of electro-magnets and mechanism
attached, showing more clearly the construction and operation of that part of the
device which is operated by electricity.
Figure 3 is a detached sectional view of part of the clock movement viz: that
part to which the dial is attached and by means of which it is revolved.
A is a clock of any suitable construction which is provided with a post a shown
in Figure 3. This post a is so geared to the clock movement that it will make one
complete revolution in twelve hours.
Fitting over that post a is a sleeve b closed at its upper end and provided with a
spigot or shank c extending therefrom. Secured to the upper end of the sleeve is
also a disk d which is in turn provided with pointed pins e e extending upward
from its face. These pins e e act by engaging, with the dial B (which is preferably
made of paper) to cause said dial to revolve and prevent the same from slipping
around the spigot or shank c.

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To keep the dial B more securely in place on the disk d, I provide another disk
which fits between the pins e e, its centre being provided with a hole, which fits
snugly over the spigot or shank c.
The sleeve bis prevented from turning on the post a by a pin g which engages
with a sloth formed in the lower end of the said sleeve.
C, D, E, F, G and H are a series of electro magnets which are provided with
armatures C', D¹, E¹, F' G' and H'; said armatures being hinged at their one end
and provided at their free or moveable end with needles or punches h, i j k l and m.
These needles h i j k land m are pivotally secured, each to its respective armature
and from thence passing upwards through the lower of two guide bars I and J ;
said bars I and J acting to guide and hold the dial in position to be pierced by the
point of the needles."
Wires are run. from each of the several electro-magnets to different stations or
parts of the building where push buttons are placed to be operated by the
watchman. The dial B is divided into spaces as shown in Fig. 1. each space
passing the line of needles in one hour; the post a being on a line with the said
needles as shown in Fig. 1. These spaces may, if desired be sub-divided into any
number.
"
The operation of this device is as follows:-
The clock being wound up and a battery being placed in the circuit of the wires
leading to the several electro magnets, the dial B is placed in position on the disk d
and secured thereon in the manner herein before explained; it being in such a
position as to cause it (the said dial) to pass between the bars I and J where it
may be operated upon by the needles at stated intervals by causing the armature
of one of the electro magnets to be drawn upwards as shown at C, Fig. 2. This is
done by pressing the push-button at the ends of the wires, passing to the magnet
above the said armature, which allows of the passage of the electric fluid through
the said magnet and causes it to draw the armature towards it with sufficient force
to pierce the paper.
TIL T
TIL T
In a watchman's time registering clock, the combination with a clock movement,
a revolving dial, connected therewith and parallel bars located on opposite sides of
the dial and radially thereto, of a series of electro-magnets having needles secured
to their armatures and arranged radially to the clock dial for piercing the dial on a
radial line, substantially as and for the purposes set forth.
In witness whereof I, the said Jasper Wetter have hereunto set my
hand and seal this twenty eighth day of October AD 1882.
T HIZITED