IMPROVEMENTS IN WATCHES OR POCKET TIMEKEEPERS.
Year: 1878

page_text: LETTERS PATENT to Frank Walter Hayward, of the City of Norwich, Chro-
nometer and Watch Maker, for the Invention of "IMPROVEMENTS IN WATCHES
OR POCKET TIMEKEEPERS.'
"
Sealed the 28th January 1879, and dated the 8th August 1878.
PROVISIONAL SPECIFICATION left by the said Frank Walter Hayward at
the Office of the Commissioners of Patents on the 8th August 1878.
FRANK WALTER HAYWARD, of the City of Norwich, Chronometer and Watch
Maker. IMPROVEMENTS IN WATCHES OR POCKET TIMEKEEPERS.'
"
This Invention relates,―
First. To the employment of phosphor bronze, or other suitable metal which does
not soften or anneal from the effect of heat for the pivot holes and other wearing
parts of watches.
Secondly. To the construction of an improved cap or cover for English lever
frame watches, such cap or cover to be placed between the case and the movement
of the watch; this cap or cover has only one hole (for the insertion of the key for
winding up the watch) throughout its entire construction, the bolt being so arranged
as to be outside the cap.
The improved cap locks in the following manner-It is provided with two pins
projecting a short distance from and beyond the edge of the top plate of the watch,
and two grooves in the inside of the cap to allow it to slide over the pins; at the
end of each of the grooves there is another groove at right angles, so that if the cap
be turned, no matter how slightly, the two pins will be moved into the two second
grooves and the cap will be at once fastened.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frank Walter Hayward in the Great Seal Patent Office on the 7th
February 1879.
FRANK WALTER HAYWARD, of the City of Norwich, Chronometer and Watch
Maker. "IMPROVEMENTS IN WATCHES OR POCKET TIMEKEEPERS."
This Invention relates,-
First. To the employment of phosphor bronze, or other suitable metal which does

page_text: :
.
not soften or anneal from the effect of heat for the pivot holes and other wearing
parts of watches.
Secondly. To the construction of an improved cap or cover for English lever
watches, such cap or cover to be placed between the case and the movement of the
watch; this cap or cover has only one hole (for the insertion of the key for winding
up the watch) throughout its entire construction, the bolt being so arranged as to
be outside the cap.
The improved cap locks in the following manner: Two pins project a short
distance from and beyond the edge of the top plate of the watch, and two grooves
in the inside of the cap allow it to slide over the pins; at the end of each of the
grooves there is another groove at right angles, so that if the cap be turned, no
matter how slightly, the two pins will be moved into the two second grooves and
the cap will be at once fastened.
But to make my Invention better understood I will proceed to describe the same
by reference to the accompanying Drawing, in which Figure 1 is a plan of my
improved cap or cover for English lever frame watches; Figure 2, plan of tho
under side of same; Figures 3 and 4, sections on line A, B, and B, A, respectively;
and Figure 5, plan of the top plate of a watch to be enclosed or covered by my
improved cap or cover.
Similar letters in all the Figures represent similar parts.
a, a, is the cap or cover, and b a sink in the same for freeing the cock and
balance; c is the only hole in the cap or cover, and serves for the insertion of the
key for winding up the watch; d, d, are the vertical grooves in the inside of the
rim of the cap, and e, e, the grooves at right angles to the same, together forming
bayonet grooves; f, f, are the pins on the top plate; g, g, are recesses in the rim of
the cap for freeing the chain and fusee, and maintaining power detent; and i is the
recess for fitting over the pillar plate.
By this construction of cap it will be understood that to place the cap or cover on
the watch it is merely necessary to bring the grooves d, d, above the pins f, f, in
the top plate, and the cap will slide over these pins; then by slightly turning the
cap the pins f,, will pass into the grooves e, e, and the cap will be securely fastened
in position.
A cover of sufficient size to completely cover the hole c is fitted over the fusee
square, and screwed or fastened on to the plate of the watch, the top part of this
cover coming in contact with the under side of the cap.
The bolt his cut away, as shewn in enlarged side view at Figure 6, so as to
allow of it coming outside the cap instead of passing through a slit in the cap, as
hitherto.
Having thus described my Invention, and the best means with which I am
acquainted for carrying the same into effect, I wish it to be understood that what I
claim is, the improvements in watches or pocket timekeepers herein-before described,
and represented in the accompanying Drawing.
In witness whereof, I, the said Frank Walter Hayward, have hereto set my
hand and seal, this Fourth day of February, in the year of our Lord One
thousand eight hundred and seventy-nine.
FRANK W
WALIER 1AI WAN
ARD.
(L.S.)