A New or Improved Safety Bow for Keyless Watches and Method of Attachment.
Year: 1888

page_text: A New or Improved Safety Bow for Keyless Watches and Method
of Attachment.
1 JOSEF SKAREK, Gentleman, of 23 Seidengasse Vienna in the Empire of Austria
do hereby declare the nature of this invention and in what manner the same is to bo
performed to be particularly described and ascertained in and by the following
statenrent:
The subject of this invention is a solid attachment of the bow of the so-called
keyless watch (watch with knob winder). The bow attachment at present generally
in use and which easily gets loose consists in a bow which by its spring action wedges
its ends into sockets barely half a millimetre deep for which large and costly pieces
of metal often have to be soldered together. It is a known fact that this bow only
possesses a slight spring force and is therefore only capable of slight resistance which
is the cause of the frequent slipping out of the bow whereby the danger of the watch
falling to the ground or being lost is unavoidable. It is well known that this bad
mode of construction greatly assists thieves in snatching watches and watch chains.
The present invention is designed to obviate this difficulty by simple means.
In the accompanying drawing Figure 1 shows the entire arrangement of the new or
improved bow fastening for keyless watches showing a cross section of one form of the
bow fastening.
Figures 2 to 6 refer to certain modifications viz.
Figure 2 shows a different form of ring.
--
Figure 3 shows in cross section a modification of the attachment of the part c to the
hollow cylinder d by means of pins e.
Figure 4 shows in cross section such a mode of attachment of the part c with the
hollow cylinder d by means of screwing.
Figures 5 and 6 show the mode of attachment by means of "bayonet fastening"
in which the pin g catches in the hole g¹ in the hollow cylinder d.
Figure 5 shows the mode of attachment with the hollow cylinder d cut through and
taken apart.
Figure 6 shows parts when put together.
As will be seen the bow a is provided with the shoulders bb set in the upper part
of the attachment c. Onto this cylinder a second hollow cylinder d is slid which has

page_text: to hold down the ends bb of the bow a and is pinned or rivetted to the first
cylinder at e. The winding key f can then be slid in turned and if necessary taken
out again as with this system of how attachment the euls of the bow can be prolonged
as far as the winding key f the bow may also have the form shown in Figure 2 and
other known or suitable forms may also be used.
In Figures 3 to 6. sundry variations of the part as shown in Figure 1 are
represented. In Figure 3 the hollow cylinders are to be slid one into the other and
secured together at e by pinning or rivetting, in Figure 4 they are to be screwed one
into the other. In Figure 5 the slot is made in the form of a bayonet-fastening.
When pushed together (Figure 6) the ping springs into the aperture g¹ and by that
means holds the outer cylinder firm. If they have to be taken apart the pin g must
be pressed back whereupon the upper cylinder can easily be removed.
By adopting various kinds of slots and modes of attachment of the outer to the inner
cylinder many other combinations are possible which are suitable for receiving and
permanently holding firm the bow provided with any kind of ends bb thereto without
the bow having to be sprung apart. Thus the desired object of the new bow attach-
ment can be attained.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is
A safety bow for keyless and other watches in which the bow a without spring
provided with suitably formed ends and with or without shoulders can turn between
the part having a suitable slot therein and the hollow cylinder & the hollow
cylinder being attached to the part e either by pins e (Figure 3) or by screwing
(Figure 4) or by bayonet fastening (Figures 5 and 6) substantially as and for the
purposes herein before set forth.
d
Dated this 19th day of A...: 1000
TONGUE & BIRKBECK,
34, Southampton Buildings, London, W.C.,
Agents for the Applicant.