Improvements in Locking Devices or Spring Catches, more particularly applicable to Metallic Money Boxes or Savings Banks, and in the Mode of Securing the same in Position.
Year: 1892

page_text: Date of Application, 20th June, 1892
Complete Specification Left, 20th Mar., 1893-Accepted, 20th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Locking Devices or Spring Catches, more
particularly applicable to Metallic Money Boxes or Savings
Banks, and in the Mode of Securing the same in Position.
We, ERNST AUGUST JAHNCKE, Metallic Box Manufacturer, and FRIEDRICH
AUGUST GOTTHELF GMELIN, Engineer, both of Canonbury Works, Dorset
Street, Essex Road, in the County of London, do hereby declare the nature of
this invention to be as follows:-
This invention relates to an improved locking device or spring catch, more
particularly applicable to that class of metallic money box or savings bank in which
the lid is provided with an opening and (or) registering mechanism.
The improved device or spring catch is so constructed as to be fitted to the box
without the use of solder or rivets, and is made from sheet metal, so shaped
or cut as to form one piece having two limbs or members. One of these limbs or
members is bent, for a portion of its length, out of the plane of the other and con-
stitutes the spring, while the other limb or member terminates, by preference, in
a dished or recessed boss or projection. The free end of the spring portion is bent
or turned over to form a retaining lip or catch-proper, against which, in the case
where above alluded to mechanism is employed, the notched revolving disc strikes,
and by which said disc is retained when the lid is closed.
For securing this device or spring catch to the box, the front of the box is
formed with an opening or aperture corresponding to the shape of the boss or
projection which is to be located therein, and this opening is so cut as to leave
tongues which, when the boss is in position, are pressed over the back of the same
and are closed by pressure, thereby firmly retaining the device in place. By
preference a flange, or flanges, is, or are, likewise formed on the boss, and while
preventing this boss from projecting too far through the opening or aperture, aid
in keeping it in its required position. Or the opening or aperture may be so
formed that a band or strip of metal is left extending across its width, and this
band, when set back, allows the boss to be passed over the same, when the spring
catch is to be fitted to the box. The band or strip is then pressed into the recessed
surface at back of the boss and so retains it, and the entire device or spring catch,
firmly in position.
In cases where a revolving disc is not employed the lid is provided with a suitable
projection or protuberance which strikes against the retaining lip or catch proper
and by means of which said lid is retained when closed.
Dated this 90th dev of Lune 1802
ERNEST DE PASS,
Chartered Patent Agent,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Locking Devices or Spring Catches, more
particularly applicable to Metallic Money Boxes or Savings
Banks, and in the Mode of Securing the same in Position.
We, ERNST AUGUST JAHNCKE, Metallic Box Manufacturer, and FRIEDRICH
AUGUST GOTTHELF GMELIN, Engineer, both of Canonbury Works, Dorset
Street, Essex Road, in the County of London, do hereby declare the nature of
027

page_text: this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement, reference being had
to the accompanying drawings and to the letters and figures marked thereon, that
is to say :-
This invention relates to an improved locking device or spring-catch, more
particularly applicable to that class of metallic money box, or savings bank, in
which the lid is provided with an opening and registering mechanism.
The improved device or spring-catch is so constructed as to be fitted to the box,
without the use of solder or rivets, and is made from sheet metal so shaped, or cut,
as to form one piece having two limbs or members. One of these limbs or
members is bent, for a portion of its length, out of the plane of the other and
constitutes the spring, while the other limb or member terminates, by preference,
in a dished or recessed boss or projection. The free end of the spring portion is
bent or turned over to form a retaining lip or catch proper, against which, in the
case where the above alluded to mechanism is employed, the notched revolving
disc strikes, and by which said disc is retained when the lid is closed.
For securing this device or spring-catch to the box, the front of the box is
formed with an opening or aperture corresponding to the shape of the boss or
projection which is to be located therein, and this opening is so cut as to leave
tongues which, when the boss is in position, are pressed over the back of the same
and are closed by pressure, thereby firmly retaining the device in place. By
preference, a flange, or flanges, is, or are, likewise formed on the boss, and, while
preventing this boss from projecting too far through the opening or aperture, aid
in keeping it in its required position. Or the opening or aperture may be so
formed that a band or strip of metal is left extending across its width, and this
band when set back allows the boss to be passed over or in front of the same when
the spring catch is to be fitted to the box. The band or strip is then pressed into
the recessed surface at back of the boss, and so retains it and the entire device or
spring-catch firmly in position.
And in order that our invention may be readily understood, we proceed to
describe the same fully with reference to the annexed drawings, in which :-
Fig. 1 is a front elevation of a box body, showing the opening or aperture formed
therein to receive the locking device or spring-catch.
Fig. 2 is a plan; Fig. 3 a transverse section on the line 1, 1, of Fig. 2; Fig. 4 a
longitudinal section on the line 2, 2, also of Fig. 2, and as seen from the rear; and
Fig. 5 is a fragmentary view in cross section taken on the line 3, 3, of Fig. 4, of a
metallic money box provided with our locking device.
Fig. 6 is a back view, Fig. 7 a front view, and Fig. 8 a top edge view of the
locking device or spring-catch detached from the box.
Fig. 9 is a front elevation, and Fig. 10 a transverse section on the line 4, 4, of
Fig. 9, of a portion of a box body showing a modified mode or means for securing
the locking device in place.
The
a, b, are the two limbs or members of the locking device or spring-catch.
one a is bent out of the plane of the other (see Fig. 8) and has at its free extremity,
a retaining lip or catch a' which, when the box is closed, engages with the notched
revolving disc A, of the opening or registering mechanism, carried by the lid of
the money box, and securely retains the box locked. The other limb or member b,
terminates in a dished boss or projection, provided with flanged portions 6² and
notches or recesses b³. When the locking device or spring-catch is in place within
the box, the dished boss or projection 61 protrudes through the opening or aperture c
in the box body, as shown in Figs. 2 and 5, but is prevented from passing entirely
through said opening, by the flanged portions 62, the tongues c', cl, with which the
opening is furnished, being then bent down into the recesses 3 and onto the dished
portion at the back of the boss or projection as shown at Fig. 5. The locking
device or spring-catch is thus firmly held in position, and is effectually prevented
from being moved from the outside.

page_text: On closing the lid of the box, the rim of the notched revolving disc A will come
against the retaining lip or catch a¹, on the limb a, and, by reason of the resiliency
of this limb, will displace the retaining lip or catch until the rim comes below it,
when said catch will immediately resume its normal position and thereby retain the
lid securely closed. The box will thus remain locked until a sufficient number of
coins has been deposited to cause the disc A to move round far enough to bring its
notch opposite the lip or catch a', as referred to in the Complete Specification
No. 6941 of the said E. A. Jahncke. The disc will then be free of the catch,
and the box be readily opened.
Instead of forming the opening or aperture c, as above explained, so as to leave
tongues e for the purpose of securing the locking device or spring-catch to the
box, we may construct or form this opening in the manner shown at Figs. 9 and 10,
that is to say, by punching out the metal in two places so as to leave a band or
strip d extending across the minor axis of said opening. This strip is then set
back (or it may be set back at the time of punching) to allow of sufficient space
for the boss on the locking device to be readily passed in front of it, and after this
has been effected, the strip is pressed into the concavity of the boss, thereby firmly
retaining the locking device in place.
In cases where a revolving disc is not employed, the lid is provided with a
suitable projection or protuberance which strikes against the retaining lip or catch
proper, and by means of which said lid is retained when closed.
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 :-
:-
1. The locking device or spring-catch formed from a piece or strip of sheet
metal so cut and shaped as to constitute two limbs or members, one of which forms
a spring and is provided with a retaining lip or catch, and the other terminates in
a flanged and dished boss or projection, by means of which said locking device is
secured to the box, substantially as described.
2. The mode or means for securing the above claimed locking device or spring
catch to the box, whereby the use of solder, or rivets, is dispensed with, substan-
tially as hereinbefore described and as shown with reference to the annexed
drawings.
Dated this 20th dor of March 1802
ERNEST DE PASS,
Chartered Patent Agent,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicants.