and koning SLOCK
Year: 1887

page_text: Date of Application, 8th Sept., 1887
Complete Left, 1st June, 1888
Complete Accepted, 6th July, 1888
Machinery and koning SLOCK.
KARL GUSTAVE GARBE 12 Portland Street Soho County of Middlesex Ivory Turner
and GEORGE WALLACE 12 Portland Street Soho County of Middlesex Engineer
do hereby declare the nature of this invention to be as follows:-
The bolt to be employed is constructed with a longitudinal slot or groove running
crosswise to the thread, the whole length of the bolt. The nut is turned out on one
face from the centre to within one eighth of an inch of the outside leaving a collar
right round it, to allow of the introduction of a ratchet wheel which wheel has its
centre struck out with the exception of a small projecting piece of a size to fit into
the groove or slot in the bolt a piece of the collar is cut out to allow of a catch (working
on a spindle or rivet) to be inserted. The catch when in position to engage
with a tooth of the ratchet wheel, one end of the catch to project outside of the edge
of the nut. A spring keeps the catch pressing upon the edge of the wheel, to undo the
nut a slight pressure is required upon the projecting portion of the catch which
disengages it from the ratchet wheel and allows the nut to be turned back. A washer is
fastened on the top of the nut to keep all clean.
Dated this 8th day of September 1887

page_text: COMPLETE SPECIFICATION.
Improvements in Safety Lock Nuts and Bolts for Application to
Machinery and Rolling Stock.
KARL GUSTAVE GARBE 12 Portland Street Soho London and GEORGE WALLACE
12 Portland Street Soho London 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:-
This invention relates to an improved lock nut device whereby we effect the locking
or grip of the nut on the bolt, without in any way altering the simplicity of screwing
on by hand or spanner, or reducing strength of nut or bolt. For this purpose we take
any ordinary bolt and cut a longitudinal slot the whole length of thread, as shown in
(Fig. 1). We then take any ordinary nut and turn a space out from the face and
also cut a groove as in (Fig. 2). In space turned out of face of nut we insert the
coggwheel (A) the hole in centre of coggwheel (A) to be of sufficient size to slide
over thread of bolt (Fig. 1) with a projection to run in slot of bolt (Fig. 1) we also
insert the catch (B) and spring (C) the catch B is fixed to the nut by a pin on which
it works. The spring (C) is fixed in groove cut in nut and presses on catch (B)
causing one end of catch (B) to fall into teeth of coggwheel (A) and the other end
of catch B to project slightly above outer surface of nut. This outer end of catch (B)
when pressed causes the spring (C) to be raised and releases other end of catch (B)
from teeth of coggwheel (A) for purpose of unscrewing as shown in (Fig. 3). A
plate is then fixed on face of nut to cover & protect working forming a complete
nut as shown in (Fig. 4). The nut and bolt can now be used for any purpose of an
ordinary nut and bolt and cannot work loose or become detached by vibration.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what
we claim is,
"The construction of nuts made with inserted coggwheels catches & springs screwing
on to slotted bolts," as and for the purpose set forth.
Dated this 1st day of June 1888.