IMPROVEMENTS IN MECHANISM FOR LOCKING OR FASTENING TIERS OR SETS OF DRAWERS ARRANGED IN WRITING TABLES CABINETS, CHESTS, OR OTHER ARTICLES OF FURNITURE
Year: 1865

page_text: LETTERS PATENT to Ludwig Diele, of Hackney Road, in the County of
Middlesex, Writing Table and Cabinet Manufacturer, for the Invention
of IMPROVEMENTS IN MECHANISM FOR LOCKING OR FASTENING TIERS OR
SETS OF DRAWERS ARRANGED IN WRITING TABLES CABINETS, CHESTS, OR OTHER
ARTICLES OF FURNITURE."
Sealed the 21st November 1865, and dated the 27th May 1865.
PROVISIONAL SPECIFICATION left by the said Ludwig Diele at the
Office of the Commissioners of Patents, with his Petition, on the 27th
May 1865.
I, LUDWIG DIELE, of Hackney Road, in the County of Middlesex, Writing
Table and Cabinet Manufacturer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MECHANISM FOR LOCKING OR FASTENING TIERS
OR SETS OF DRAWERS ARRANGED IN WRITING TABLES, CABINETS, CHESTS, OR OTHER
ARTICLES OF FURNITURE," to be as follows:-
This Invention relates to improved arrangements or combinations of
mechanism for locking or fastening simultaneously one or more tiers or sets
of drawers mounted or arranged in connection with pedestal writing, or other
tables, cabinets, chests, or other articles of furniture containing a series of
drawers or receptacles one above the other, and I would remark that I am
aware that it has before been proposed to lock or fasten a series of drawers
simultaneously, and a Patent was granted for this purpose to Jacob Safran,

page_text: dated April 15th, 1857, No. 1070, but in the arrangements of mechanism
therein described the locking or fastening of a series of drawers (and the
unlocking of the same) depended upon the closing (or opening) of one of
the drawers of the series or combination, whereas I render the action of the
locking apparatus or mechanism altogether independent of the movement of
the central or other drawer forming part of the combination.
In carrying out my improvements I place or arrange in the framework or
side of each of the tiers, nests, or set of drawers (forming part of a pedestal
or other writing table, or similar piece of furniture containing a number of
drawers) a vertical bar or rod, by preference of brass, borne upwards by a
spring, and having a series of suitably formed projections or bolts fixed on
one side, which enter notches or recesses formed on the under side of each
drawer, and arranged in a similar manner to the locking instrument described
in the Specification before referred to, and to which separately I make no
claim, my improvements having for their object more effectual and convenient
means of acting upon and releasing such upright bolts or locking instruments
independent of the movement of either of the drawers.
In arrangements or combinations where there is a central drawer, I prefer
in carrying out my improvements to apply an ordinary lock to such drawer,
which can be locked or unlocked, and be drawn out without interfering in
any way with the mechanism which locks or fastens the other drawers of the
combination. The mechanism for releasing or depressing the vertical bolts
which fasten the tiers or sets of drawers I prefer to arrange in combination with
the central drawer above referred to, at the same time I would remark that
I do not confine myself to such an arrangement, as the releasing mechanism
may be arranged separately and independent of either of the drawers of a
combination, the arrangement I am about to describe being a convenient
one for carrying out my improvements. Within the interior of the front of
the drawer two levers are imounted upon studs or pins placed near the
centre of each lever, the inner ends of these levers are connected together,
whilst the outer ends are connected to the ends of other similar levers
placed at right angles along the inner sides "of " the central drawer.
The
side levers are so arranged that their ends project over the tops of the
vertical rods or bolts previously described, so that when they are acted upon
by depressing the inner ends of the front levers, the ends of the side
levers are caused to depress the vertical rods or bolts, and thus release each
tier or series of drawers previously held thereby without any movement of
the central drawer. In order to depress the inner ends of the front levers I
prefer to enlarge the keyhole of the lock at the lower end, an additional pin
فيا

page_text: being fixed to the lock opposite to this enlargement, part of the lock being
arranged accordingly, and when it is desired to release the tiers or sets of
drawers held or fastened by the vertical bolts the key of the lock is reversed,.
the pipe of the key being placed upon the bottom pin, and passed into the
lock, then by turning it partially round the body of the key will depress the
inner ends of the front levers, which will act to press down the vertical bolts,
and thus release cach of the tiers or series of drawers previously locked or
fastened thereby.
The arrangement of the rods or bolts required for locking or fastening.
different combinations of drawers or receptacles may be greatly varied, the re--
leasing levers previously described being adapted to suit such combinations.
in accordance with my improvements.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed:
by the said Ludwig Diele in the Great Seal Patent Office on the
27th November 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LUDWIG
DIELE, of Hackney Road, in the County of Middlesex, Writing Table and.
Cabinet Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters.
Patent, bearing date the Twenty-seventh day of May, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-eighth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Ludwig Diele, Her special licence that I, the said Ludwig
Diele, my executors, administrators, and assigns, or such others as I, the
said Ludwig Diele, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN MECHANISM FOR LOCKING OR FASTENING TIERS OR SETS OF
DRAWERS ARRANGED IN WRITING TABLES, CABINETS, CHESTS, OR OTHER ARTICLES OF
FURNITURE," upon the condition (amongst others) that I, the said Ludwig
Diele, my executors or administrators, by an instrument in writing under
my, or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great Seal

page_text: Patent Office within six calendar months next and immediately after the
date of the said Letters Patent.
'NOW KNOW YE, that I, the said Ludwig Diele, do hereby declare the
nature of the said Invention, and in what manner the same is. to be performed,
to be particularly described and ascertained in and by the following. statement
thereof, that is to say :-
"This Invention relates to improved arrangements or combinations of
mechanism for locking or fastening simultaneously one or more tiers or sets
of drawers mounted or arranged in connection with pedestal, writing, or other
tables, cabinets, chests, or other articles of furniture containing a series of
drawers or receptacles one above the other, and I would remark that I am
aware that it has before been proposed to lock or fasten a series of drawers
simultaneously, and a Patent was granted for this purpose to Jacob Safran,
lated April 15th 1857, No. 1070, but in the arrangements of mechanism
therein described the locking or fastening of a series of drawers (and the
inlocking of the same) depended on the closing or opening of one of the
trawers of the series of combination, whereas I render the action of the locking
apparatus or mechanism altogether independent of the movement of the
central or other drawer forming part of the combination.
In carrying out my improvements I place or arrange in the framework or
side of each of the tiers, nests, or sets of drawers (forming part of a pedestal
or other writing table, or similar piece of furniture containing a number of
drawers) a vertical bar or rod, by preference of brass, borne upwards by a
spring, and having a series of suitably formed projections of bolts fixed on one
side, which enter notches or recesses formed on the under side of each drawer,
and arranged in a similar manner to the locking instrument described in the
Specification before referred to; and to which separately I make no claim; my
improvements having for their object more effectual and convenient means of
acting upon and releasing such upright bolts or locking instruments inde-
pendent of the movement of either of the drawers.
In arrangements or combinations where there is a central drawer, I prefer
in carrying out my improvements to apply an ordinary lock to such drawer,
which can be locked or unlocked, and be drawn out without interfering in
any way with the mechanism which locks or fastens the other drawers of the
combination. The mechanism for releasing or depressing the vertical bolts
which fasten the tiers of set of drawers I prefer to arrange in combination with
the central drawer above referred to, at the same time I would remark that
I do not cofifiñe myself to such an arrangement, as the releasing mechanism
May be arranged separately and independent of either of the drawers of a

page_text: combination, the arrangement I am about to describe being a convenient
one for carrying out my improvements. Within the interior of the front of:
the drawer two levers are mounted upon.studs or pins placed near the centre-
of each lever, the inner ends of these levers are connected together, whilst the
outer ends are connected to the ends of other similar levers placed at right angles
along the inner sides of the central drawer. The side levers are so arranged
that their ends project over the tops of the vertical rods or bolts previously
described, so that when they are acted upon by depressing the inner ends, of
the front levers the ends of the said levers are caused to depress, the vertical
rods or bolts, and thus release each tier or series of drawers previously held.
thereby without any movement, of the central drawer. In order to depress.
the inner ends of the front levers I prefer to enlarge the keyhole of the lock.
at the lower end, an additional pin being fixed to the lock opposite this enlarge-
ment, part of the lock being arranged accordingly, and when it is desired to-
release the tiers or sets of drawers held or fastened by the vertical bolts, the
key of the lock is reversed, the pipe of the key being. placed upon the bottom
pin, and passed into the lock, then by turning it partially round the body of
the key will depress the inner ends of the front levers, which will act to
press down the vertical bolts, and thus release each of the tiers or series.
of drawers previously locked or fastened thereby.
The arrangement of the rods of bolts required for locking or fastening
different combinations of drawers or receptacles may be greatly varied, the
releasing levers previously described being adapted to suit such combinations
in accordance with my improvements.
And in order that my Invention may be most fully understood and readily
carried into practice, I will proceed to describe the Drawing hereunto
annexed:
DESCRIPTION OF THE DRAWING.
Figure 1 shows a front view partly in section, and Figure 2 shows a trans-
verse section of a pedestal writing table having mechanism arranged in com-
bination therewith for locking or fastening the tiers or sets of drawers simul
taneously in accordance with my improvements. Figure 3 shows a perspective
view of the central part or desk of such pedestal writing table in which part
the arrangement of levers is placed in connection with the lock for actuating
the vertical rods or bolts as herein-after described. Figures 4, 5, and 6 show
separate views of several arrangements of locks suitable for actuating the
system of levers or mechanism by means of the same key which locks the
central drawer or desk.

page_text: a, a, are the two front levers' moving on the pins a', a', fixed on the inner
side of the front of the central drawer or desk, the inner ends of these levers
are by preference formed with inclines, which fit together so that when the end
of the one which overlaps is depressed; it will act on the incline formed on the
end of the other lever, and depress it also. The outer ends of the levers
a, a, pass underneath the ends of the side levers b, b, which move on pins
6, 61, fixed on the inner sides of the central drawer or desk, the front ends
of the levers-b, b, being constantly pressed downwards by springs 62. The
back ends of the levers b, b, project over a pin or projection cfixed on the
side of each of the vertical bolts or rods c, shown separately at Figure 2*, and
when the outer ends of the front levers a, a, are caused to rise they raise with
them the front ends of the side levers b, b, thus causing the back ends of such
levers to press down the vertical bolts. or rods c, c, by acting upon the pins or
projections on each rod c. By the descent of the bolts or. rods. c, c, the.
projections, c, fixed thereon are withdrawn from the notched recesses on
the under side of each drawer, so that any or all of the drawers of each tier
or set may then be drawn out. When the back ends of the levers b, b, are
allowed to rise by the action of the springs 6, the vertical rods or bolts.c, c,
will be pressed upwards by the springs c³, c³, and cause the projections c, c,
to enter into the recesses on the under side of each drawer, by which means
each drawer will be securely retained from being drawn out until again
released. The vertical rods c, c, are formed in three separate parts (as.
described in the Specification before referred to), and rest one on the other,
and are guided up and down in grooves formed in the framework of the
table, the upper part of each rod :c being pressed downwards by a spring to
ensure its; descent when the central part of the compound.rod.c. is pressed
down by its lever b.
In the arrangement of lock shown in Figures 1, 3, and 4 of the Drawing,
in order to unlock the tiers of drawers simultaneously it is necessary to reverse
the key: by withdrawing it from the ordinary pin of the lock; whichi locks the
central drawer or desk, and place it in the keyhole upon the bottom pin of
the lock, then by turning the body or blade of the key downwards it will
descend below the bottom edge of the lock, and depress the levers a, a, and
by this means actuate the mechanism previously described for unlocking the
tiers or sets of drawers forming part of the pedestable writing table.
: Figure 5 shows a separate view of a lock so arranged that by the act of
unlocking the central drawer or desk the opposite end of the bolt descends
below the lock, and thus depresses the ends of the levers a, a, to disengage
the rods c, c, from each of the drawers.
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page_text: Figure 6 shows another arrangement of lock for acting upon the levers a, a,
by the unlocking of the central drawer or desk, the movement of the bolt being
caused to act on a lever a*, which depresses the levers a, a, as will be readily
understood on examining the Drawing.
In witness whereof, I, the said Ludwig Diele, have hereunto set my
hand and seal, this Twenty-fifth day of November, in the year of our
Lord One thousand eight hundred and sixty-five.
)
Witness,
J. G. TONGUE,
Patent Agent,
34, Southampton Buildings,
Chancery Lane, W.C.
L. DIELE. (L.8.)