Improvements in and connected with Locks and other Fastenings.
Year: 1895

page_text: Date of Application, 18th Nov., 1895-Accepted, 28th Dec., 1895
COMPLETE SPECIFICATION.
Improvements in and connected with Locks and other
Fastenings.
We HERMANN KUNZE of Hill End, in the Colony of New South Wales,
Saddler, and SUMMERS BROWN, of Mosman, near Sydney, in the colony aforesaid,
Merchant, 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 has for its object the providing of a spring bolt usable also as a
lock and latch and certain improvements in connection with keys therefor.
Referring to the annexed sheets of explanatory drawings,
Fig. 1 is a perspective view of the bolt,
Fig. 2 a similar view of the staple bar,
Fig. 3 a similar view of bolt shot upon the staple bar and securing together a
pair of leather straps or thongs,
Fig. 4 a perspective view of the invention applied as a latch gear for leggings,
Fig. 5 a longitudinal section illustrating the modification adapted as a lock,
Fig. 6 a bottom plan of base plates,
Fig. 7 a top plan of bolt, Fig. 8 a bottom view of same,
Fig. 9 a similar view showing plan of key bitt in position for shooting back
the bolt,
Fig. 10 a transverse section on line a, b, Fig. 5;
Fig. 11 a side elevation of key and plan thereof,
Fig. 12 a transverse section through door knob.
The same figures of reference indicate corresponding parts in all the.
drawings.
The bolt has its end 2 formed as a spring with a finger piece 3 for manipulation.
A slot 4 terminating in an enlarged aperture 5 permits the bolt 1 to slide freely
within the grooves 6 and 7 formed in the studs 8 and 9. 10 is the staple bar, and
11 an aperture in the spring 2, which engages with the point of one of the studs 8
or 9 on the staple bar 10. 12 aud 13 are two straps or thongs joined together by
the spring bolt!; 14 are holes in the upper strap.
It will readily be seen that the invention is capable of application in a variety of
ways wherein the locking together of parts is required, and though we have
illustrated only three different applications, it is to be understood that we do not
restrict ourselves to these alone.
In Figures 1 and 3 the bolt and staple are illustrated as taking the place of a
buckle, the staple bar being secured to the lower strap by a permanent fastening
and the upper strap provided with a series of holes which engage with the studs 8
and 9.
The bolt is placed in position by inserting the end of one of the studs 8 or 9
through the aperture 5 and sliding the former within the grooves 6 or 7 till the
con responding stud falls within the aperture 5 and its groove engage, with the
slot 4. The bolt is pushed far enough to allow the hole 11 in the spring 2 to snap
over the end of its stud and so firmly lock the former in position.
To withdraw it, the finger piece 3 is pulled up to free the spring 2 from its stud,
and the bolt is then drawn back and removed.
In Figure 4 the staple bar 10 is secured into one of the meeting edges of a
legging or such like, and in the corresponding meeting edge a spring bolt 1 is
provided.

page_text: The latching is effected by entering the steals 15, 16 and 17 into their
corresponding grooves as described above, and sliding the bolt 1 far enough to
allow the aperture in the spring 2 to snap over the end 15 and so lock all in position.
Disengagement is effected by lifting up the end of the spring 2 and drawing the
bolt bodily up.
Figures 5 to 11 illustrate a further modification of the invention as applied to
the locking of a door or such like, in which the bolt is either manipulated by the
finger piece 3 from one side, or by a key from the other side.
In this modification the staple bar 10 is divided into two parts, one piece 10 being
secured to the door, and the other 10x to the frame thereof.
Referring to these figures, 18 is the door, 19 the frame thereof, 10 and 10* staple
bars provided with studs 8 and 9 and box 20. These studs are preferably made
with a cap or plate 21 secured in place by screws 22. In operating the bolt with
the key 23 to shoot it back, it is necessary in the first instance to disengage the
spring 2 from the end of the stud 8. This is accomplished by constructing the
key 23 with two bitts, 24 and 25, the former of which during the early part of its
rotary movement is engaged in lifting the spring from the stud, and this action is
completed before the other bitt 25 engages with the stop piece 26 to force back
the bolt. 27 is the second stop piece against which the bitt 25 acts to shoot the
bolt forward.
28 is an aperture cut in the stapie bar 10 and bolt 1 to permit of the insertion
and withdrawal of the litting bitt 24 of the key, 29 are clearance slots provided in
the bolt 1 to allow the necessary travel.
In Figure 12 is illustrated a door knob or handle usable with this invention, in
which the knob 30 is mounted upon the end of the key spindle. When disengaged
the former is permitted to rotate upon the latter. To actuate the bolt, a secondary
key 31 is inserted into the aperture 35 and connects the knob 30 with the spindle 23
causing them to move in unison.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
1. A spring bolt consisting essentially of a bar or bolt provided with a slot or
slots, one end of which bolt is formed of a spring adapted to lock the bolt in position
and of a staple bar upon which the bolt is locked, substantially as described and
illustrated.
2. The combination with a bolt formed with a rearward locking spring of a
staple bar provided with studs or stops in which are cut grooves or channels one of
which studs or stops being adapted to lock the bolt in position substantially as
described and illustrated.
3. A spring bolt consisting essentially of a bar or bolt one end of which is formed
of a spring adapted to lock the bolt in the "shot" position and operated by a key
provided with a bitt adapted to free the spring before the bolt is operated,
substantially as described and illustrated.
4. The construction and combination of the parts marked 1 to 11 in Figures 1
to 4 of the drawings.
5. The combination of the parts marked 1, 2, 8, 9, 10, 10x, 20, 23, 24, 25, 26,
and 27 in Figures 5 to 11 of the drawings.
6. An improved hand piece for a key consisting of a knob or such like, capable
of free rotation on its spindle but adapted to be locked thereto by the insertion of
a subsidiary key or feather, substantially as described and explained and as
illustrated in Figure 12 of the drawings.
Dated this 18th day of November 1895.
A. M. & WM. CLARK,
53 Chancery Lane, London, Chartered Patent Agents.