Year: 1888

page_text: Date of Application, 27th July, 1888
Complete Specification Left, 22nd Mar., 1889
Complete Specification Accepted, 27th Apr., 1889
JAMES CHANDLER, of 21 Mabledon place, Burton Crescent, in the County of
Middlesex, Engineer, do hereby declare the nature of my said invention to be as
follows:-
My invention relates to padlocks, desklocks, and other locks which have plates and
hasps entering the lock and engaging the bolts inside.
I construct the hasp or catch, which enters the lock, with a hemispherical, conical
or rectangular head with inclined faces, and having an annular or other groove
behind the head, forming a recessed neck.
Inside the lock two bolts or their equivalents are fitted, which, by means of springs
or other mechanism, are caused to enclose and grasp the end of the hasp, when
inserted into the lock, and thereby secure the article to be locked.
The two bolts are caused to recede from each other on the entrance of the hasp,
and are similarly operated by means of the key, when the lock is required to be
opened.
The bolts are so fitted that an ordinary key is used to separate the two bolts, or
a double ended key may be used for the same purpose. In the former case the bolts
are so arranged that the withdrawal of one bolt is caused to act upon the opposite or
partner bolt in a contrary direction: and, in the latter case, both bolts may be fitted
to act independently.
The plates fastened to the lids of desks and boxes may have one, two, or more
of my improved hasps fitted thereto, the locks being provided with an equal number
of openings, and the bolts being arranged to engage the same.
GEO. DOWNING,
Agent for Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction of Locks,
I JAMES CHANDLER, of 21 Mabledon place, Burton Crescent in the County of
Middlesex Engineer, do hereby declare the nature of my said invention and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :—
My Invention relates to padlocks, Desklocks, and other locks which have plates
and hasps entering the lock and engaging the bolts inside.
I construct the hasp or catch, which enters the lock, with a hemispherical, conical
or rectangular head, with inclined faces and having an annular or other groove behind
the head forming a recessed neck.
Inside the lock two bolts or their equivalents are fitted, which by means of springs
or other mechanism are caused to enclose and grasp the end of the hasp, when inserted
into the lock, and thereby secure the article to be locked.
The two bolts are caused to recede from each other on the entrance of the hasp,
and are similarly operated by means of the key, when the lock is required to be
opened.
The bolts are so fitted that an ordinary key is used to separate the two bolts, or a
double ended key may be used for the same purpose. In the former case the bolts
are so arranged that the withdrawal of one bolt is caused to act upon the opposite or
partner bolt in a contrary direction, and in the latter case, both bolts may be fitted to
act independently.
The plates fastened to the lids of desks and boxes may have one, two, or more of
my improved hasps fitted thereto, the locks being provided with an equal number of
openings, and the bolts being arranged to engage the same.
And in order that my said invention may particularly described and ascertained,
reference is hereby made to the accompanying drawings, in which similar letters of
reference indicate corresponding parts.
the
Fig. 1 is an elevation showing the application of my invention to a trunk lock;
plate c being fitted with two hasps. Fig. 2 is an internal view of the same, and Fig. 3
is a section of the plate c hinged to the lid.
Fig. 4 is an elevation of another form and arrangement of trunk lock, having one
hasp, and Fig. 5 is an internal view of the same.
Figs. 6, 7 and 8, illustrate modifications of my invention, showing the method of
applying tumblers to the locks.
Figs. 9 and 10 show the method of applying my invention to a box or desk-lock.
Figs. 10 and 12 show the method of applying my invention to padlocks.
Referring to Figs. 1. 2. and 3, a is the front plate, and 6 is the back plate, formed
as a box to contain the works. c is the plate hinged at to the upper plate c³, the
latter being fixed to the lid. fis my improved hasp. dd is the double right hand
bolt, and ee are the two left hand bolts. 9 is a spring which presses the plate

page_text: outwards when the hasps ff are released by unlocking. The two bolts e e are pivotted
at e¹¹. h is an ordinary spring, the effect of which is to close the bolts when the key
is removed.
When the key is inserted and turned to the right, the bolt d is moved away from
the hasps ff, on the right hand side. The tails of the bolts e e are at the same time
moved to the right, whereby their upper ends are carried to the left, away from the
hasps ff, whereby the latter are released, and removed from the lock by the spring g;
thus opening the lock.
In order to fasten the lock the hasps are simply pressed into the holes, whereby
the bolts are momentarily separated, and immediately afterwards close behind the
heads of the hasps and secure the lock.
In Figs. 4 and 5 one hasp only is shown and the bolts d and e are formed as shown
in Fig. 5.
In Fig. 6. the construction is similar to that shown in Fig. 5, except that a
tumbler is shown, pivotted at e¹.
In Fig. 7 the construction is similar to that shown in Fig. 2 with the addition of a
tumbler k.
In Fig. 8 the bolts d and e are both constructed to move in parallel lines, a double
ended key x (shown partly in section,) being required, which separates the bolts d
and e simultaneously. Two tumblers k k are shown.
It is obvious that any convenient number of tumblers may be fitted to the locks,
and that they may be constructed to open either right or left handed.
Fig. 9 is an internal view of a desk lock. m is the plate which is screwed to the
lid of the desk in the usual manner. ff are two hasps which enter the lock, as shown.
The upper ends of the bolts & and e are formed as shown in Figs. 9 and 10 to receive
the hasps ff. Fig. 10 being a plan view of the plate n.
Fig. 11 shows the application of my invention to a padlock. The end of the
shackle o being formed in a similar manner to the hasps fas herein before described.
g is a spring, which lifts the shackle o out of the lock when the bolts are opened by
the key.
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;
1. In the construction of locks as aforesaid, the combination of the improved hasps f
with the improved bolts d and e, substantially as herein before described and illustrated
by the drawings.
2. The general construction, combinations, and arrangements of the several and
respective parts, together forming my improvements in the construction of locks,
substantially as hereinbefore described and illustrated by the drawings.
1000
000K HAY DU
naro
GEO. DOWNING,
8, Quality Court, London, W.C.,
Agent for the Applicant.
GEO.
DOWNING,
8, Quality Court, London, W.C.,
Agent for the Applicant.