Improvements in Safety-locks for Caskets, Boxes, and the like.
Year: 1892

page_text: Date of Application, 9th May, 1892
Complete Specification Left. 9th Feb., 1893-Accepted, 18th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Safety-locks for Caskets, Boxes, and the like.
I, ALOYS REVILLIOD DE MURALT, of 2 Rue des Granges, Geneva, in the
Republic of Switzerland, Gentleman, do hereby declare the nature of this invention
to be as follows:-
The improved safety-lock for caskets, boxes and the like which forms the subject
of the present application is of a very simple construction cheap to manufacture
and may be made of very small dimensions.
In the accompanying drawings I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figures 1 to 6 show a safety-lock constructed according to my invention which
is composed of only four pieces.
Figure 1 shows the said lock without a key but locked.
Figure 2 shows the same lock with its key in the opening position.
Figure 3 is a perspective view of the same.
Figure 4 shows the lock with its key in the position in which it is introduced.
Figure 5 shows the principal piece of said lock detached.
Figure 6 shows a detail of the catch of the lock shown in the other figures.
Figure 7 represents a lock having a bolt composed of two parts.
Figures 8 to 11 show detached parts of the lock.
Figure 12 represents the key of the same.
Figure 13 represents a similar lock having a double catch and double bolt each
bolt being composed of two pieces and the said bolts being locked.
Figure 14 represents the lock with its key in its place as when introduced.
Figure 15 represents the lock after the bolts have been unlocked by the key.
Figure 16 is a separate view of the key, and
Figure 17 shows detached parts of the said lock.
Similar letters of reference indicate corresponding parts in the several figures of
the drawings.
The improved safety-lock is essentially composed of a bolt A provided with
projections A' and A2 which are arranged so that the one or the other of them
engage the hook or eye D of the catch except when the said bolt is placed exactly
into the proper position for opening the lock which is scarcely possible with any
other than the special key belonging to the lock in question.
In the lock shown in Figures 1 to 6 the bolt A is pivoted to the casing B and
acted upon by a double armed spring C the central point of which is connected to
the pivot of said bolt A one of its arms engaging into a suitable hole in the
casing B.
The other arm of said spring C presses the bolt A to the right and tends to
engage the tooth or projection A of the latter into the hook or eye D of the
catch.
The tooth or projection A' as well as the hook or eye D being suitably bevelled
the bolt A acts like a spring-bolt and engages automatically into the said hook or
ere when the casket or box to which the lock is applied shut.
The key being introduced into the central outcut of the bolt A may be turned
n any direction but it only acts upon the said bolt A when placed in the position
shown in Figure 2 in which the said bolt A is so situated as to allow the catch D
to escape between the teeth or projection A¹ and A³. Should the key displace the
bolt A somewhat more to the left then the tooth or projection A³ would engage the
ook or eye D and the casket or box could not be opened.
In the lock shown in Figure 7 the bolt A is composed of two pieces acted upon

page_text: by a spring C having two blades which act each upon one of the parts of the
bolt A. The projections A' and A' provided on each of the parts of the bolt A
engages over the edges of the opening of the catch D and the key must displace
at the same time and in a predetermined manner both of the parts composing the
bolt A to allow the catch D to be disengaged from the said bolt, that is to say to
open the casket or box.
The lock shown in the Figures 13 to 15 is a combination of the one shown in the
Figures 1 to 6 with the one shown in Figures 7 to 12.
The catch D is provided with two hooks or eyes D₁ and D' and the box or
casing B contains two pairs of pivoted pieces A each having two teeth or pro-
jections A and A'.
A spring C (Figure 17) having four independent blades, embraces the two pairs
of bolts A and acts with each of its arms upon one of the said bolts.
The key E (Figure 16) enters the lock between the two pairs of bolts A and is
provided with two bits each of them acting simultaneously upon one pair of bolts A.
Should the said key not exactly move all of the four bolts A into the predetermined
position for disengaging at one time all the teeth or projections A' from the
eyes D and D without engaging either of the teeth or projections A³ into the
same, the lock will remain shut.
Dated this 9th day of May 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Safety-locks for Caskets, Boxes, and the like.
I, ALOYS REVILLIOD DE MURALT, of 2 Rue des Granges, Geneva, in the
Republic of Switzerland, Gentleman, 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:-
The improved safety-lock for caskets, boxes and the like which forms the subject
of the present application is of a very simple construction, cheap to manufacture
and may be made of very small dimensions.
In the accompanying drawings left with my Provisional Specification I have
shown how my said invention may be conveniently and advantageously carried into
practice.
Figure 1 shows a safety-lock constructed according to my invention which is
composed of only four pieces the said lock being without a key but locked.
Figure 2 shows the same lock with its key in the opening position.
Figure 3 is a perspective view of the same.
Figure 4 shows the lock with its key in the position in which it is introduced.
Figure 5 shows the principal piece of said lock detached.
Figure 6 shows a detail of the catch of the lock shown in the other figures.
Figure 7 represents a lock having a bolt composed of two parts.
Figures 8 to 11 show detached parts of lock.
Figure 12 represents the key of the same.
•
Figure 13 represents a similar lock having a double catch and double bolt each
bolt being composed of two pieces and the said bolts being locked.
Figure 14 represents the lock with its key in its place as when introduced.
Figure 15 represents the lock after the bolts have been unlocked by the key.
Figure 16 is a separate view of the key, and,
Figure 17 shows detached parts of the said lock.
Similar letters of reference indicate corresponding parts in the several figures of
the drawings.
The improved safety-lock is essentially composed of a bolt A provided with

page_text: projections A and A' which are arranged so that the one or the other of them
engage with the hook or eye D of the catch except when said bolt is placed
exactly into the proper position for opening the lock which is scarcely possible with
any other than the special key belonging to the lock in question.
In the lock shown in the Figures 1 to 6 the bolt A is pivoted to the casing B
and acted upon by a double-armed spring C the central point of which is connected
to the pivot of said bolt A one of its arms engaging into a suitable hole in the
casing B.
The other arm of said spring C presses the bolt A to the right and tends to
engage the tooth or projection A' of the latter into the hook or eye D of the
catch.
The tooth or projection A' as well as the hook or eye D being suitably bevelled
the bolt A acts like a spring-bolt and engages automatically into the said hook or
eye when the casket or box to which the lock is applied is shut.
The key being introduced into the central outcut of the bolt A may be turned in
any direction but it only acts upon the said bolt A when placed in the position
shown in Figure 2 in which the said bolt A is so situated as to allow the catch D
to escape between the teeth or projections A' and A'. Should the key displace the
bolt A somewhat more to the left then the tooth or projection A' would engage the
hook or eye D and the casket or box could not be opened.
In the lock shown in Figure 7 the bolt A is composed of two pieces acted upon
by a spring C having two blades which act each upon one of the parts of the
bolt A. The projections A' and A' provided on each of the parts of the bolt A
engages over the edges of the opening of the catch D and the key must displace at
the same time and in a predetermined manner both of the parts composing the
bolt A to allow the catch D to be disengaged from the said bolt, that is to say to
open the casket or box.
The locks shown in the Figure 13 to 15 is a combination of the one shown in the
Figure 1 to 6 with the one shown in Figures 7 to 12.
The catch D is provided with two hooks or eyes D₁ and D' and the box or
casing B contains two pairs of pivoted pieces A each having two teeth or
projections A and A².
A spring C (Figure 17) having four independent blades, embraces the two pairs
of bolts A and acts with each of its arms upon one of the said bolts.
The key E (Figure 16) enters the lock between the two pairs of bolts A and is
provided with two bits each of them acting simultaneously upon one pair of bolts A.
Should the said key not exactly move all of the four bolts A into the predetermined
position for disengaging at one time all the teeth or projections A' from the eyes D'
and D without engaging either of the teeth or projections A³ into the same, as the
lock will remain shut.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1st. In a safety-lock for caskets boxes and the like a bolt A having two teeth or
projections A and A² disposed so as to be combined with a catch D in such a
manner that there is but one position into which said bolt A must be exactly placed
by the key if the lock is to be opened, the one or the other of those teeth or
projections A' or A' engaging with the catch D in any other position of the
bolt A.
2nd. In a safety-lock for caskets, boxes and the like, the one or more bolts A with
teeth or projections A' and A' substantially of the form shown in Figure 5 and for
the purpose specified.
3rd. In a safety-lock for caskets, boxes and the like one or more bolts A with
projections A¹ and A' substantially of the form shown in Figure 8 and for the
purpose specified.
4th. In a safety-lock for caskets, boxes and the like, the combination of a catch D

page_text: having two hooks or eyes D' and D' with two series of two or more bolts A having
projections A¹ and A³ acted upon by a spring C embracing the two series of bolts A
and having as many blades as there are bolts to be acted upon, and a key having a
double pit to act at a time upon both series of bolts, substantially as and for the
purpose specified.
5th. In safety-locks for caskets boxes and the like the double armed spring C
substantially formed as shown in Figure 17.
Dated this 9th day of February 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.