A LOCK WHICH ACTS IN A PERPENDICULAR AND THEN IN A HORIZON DIRECTION WITH SPRINGS AND TUMBLERS, ONE PART BEING AT LIBERTY WHILST THE OTHER IS IN MOTION, THE BOLTS OF WHICH LOCK RETURN INTO THE BODY THEREOF WHEN IT IS UNLOCKED
Year: 1808

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
TOMPSON, of Deritend, in the Parish of Aston, near Birmingham, in the
County of Warwick, Locksmith, send greeting.
WHEREAS His present Majesty King George the Third, in and by His
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Twenty-ninth day of December last, for Himself, His heirs, and
successors, did give and grant unto me, the said William Tompson, my
executors, administrators, and assigns, His special licence, full power, solo
privilege, and authority, that I, the said William Tompson, my executors,
administrators, and assigns, and every of them, by myself and themselves, or
by my and their deputy or deputies, servants or agents, or such others as I, the
said William Tompson, my executors, administrators, or assigns, should at any
time agree with, and no others, from time to time and at all times thereafter
during the term of years therein expressed, should and lawfully might make,
use, exercise, and vend, within England, Wales, and the Town of Berwick-
upon-Tweed, my Invention of "A LOCK WHICH ACTS IN A PERPENDICULAR AND
THEN IN A HORIZON DIRECTION WITH SPRINGS AND TUMBLERS, ONE PART BEING AT
LIBERTY WHILST THE OTHER IS IN MOTION, THE BOLTS OF WHICH LOCK RETURN INTO
THE BODY THEREOF WHEN IT IS UNLOCKED;" in which said Letters Patent there is
contained a proviso, obliging me, the said William Tompson, by an instrument
in writing under my hand and seal, particularly to describe and ascertain the
nature of my said Invention, and in what manner the same is to be performed,
and to cause the same to be inrolled in His Majesty's High Court of Chancery
within one calendar month next and immediately after the date of the said

page_text: recited Letters Patent, as in and by the same, referenco being thereunto nad,
will more fully appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
William Tompson, do hereby describe and ascertain the nature of my said
Invention, and in what manner the same is to be performed, by the Plan or
Drawing hereunto annexed, and the following description thereof (that is
to say)-
First, the key, described in Figure 2 of the Drawing, of the nose of which
may consist of two, three, or more different lenghths, must be made to
correspond with the bolt and tumblers.
Secondly, the bolt, described in Figure 4 of the Drawing, which may
consist of two or more heads, as a, a, Figure 4, and which heads are let
into the selvage of the plate, as shown by F, F, Figure 1; and in the rail of
the bolt there is an open part, which admits the drill pin, by which the key is
guided, and in the same open part of the bolt tail, shewn, the part of the bolt
that corresponds with the key nose, which may be varied, and moved by the
larger or shorter part of the keynose; or the key nose may be reversed, or
the middle part of it may be the shortest part. There are also two square
parts of the bolt tail, the outsides of which move within two checks, as
described by by A and D, Figure 1; there is also a slit or passage in the bolt
G, Figure 4, into which the cheek A, Figure 1, fits when the lock is unlocked,
and when locked it forms a rest for the outside square of the bolt. There is
a stump F, Figure 4, fixed under the bolt, or it may be made with a notch or
passage; and there are likewise one, two, or more stump notches or passages
affixed to or cut through the bolt, as shewn at G, Figure 4.
Thirdly, the steady pin, described in Figure 3 of the Drawing, is let into
the selvage of the plate like a bolt; there is a groove cut in the lower part of
it, which lower part fits into another groove at the top of the bolt, as shewn in
the Drawing, Figure 4, the bottom of the steady pin being shorter than the
last-mentioned groove to admit of the bolt moving in a horizontal direction,
leaving the steady pin in the first or perpendicular movement.
Fourthly, the body of the lock, with the drill pin, wards, cheeks, tumblers,
and springs, described in Figure 1 of the Drawing. The drill pin and wards
E represents the spring
may be the same which are generally made.
and tumbler, which tumbler falls behind or into the stumps, notches, or
passages at F, Figure 4, and secures the bolts in the lock when unlocked,
and when at the height of the perpendicular motion; B and C represent
the springs and tumblers that fall behind or into the stumps, notches,
or assages, shewn by G, Figure 4; A and D are cheeks within which the

page_text: bolt slides in its perpendicular movement, and there is a cheek affixed to the
plate encompassing the whole.
Fifthly, the cap, described in Figure 5. of the Drawing, covers the movements
of the lock.
The manner of setting the lock, or of putting the parts together. First, the
tumblers and springs are fixed to the plate by rivets or screws; secondly, the
steady pin or pins must be put through the hole or holes of the selvage of
the lock, and the sliding groove or grooves of the bolt are put into the groove
or or grooves of the steady pin or pins; thirdly, the heads of the bolt are
also put through the selvage of the plate, and the lower part of the bolt
pressed down towards the tumblers, so that the stumps on the tumblers may
act with the stumps or grooves on or made in the bolt; fourthly, the cap,
which has hole in it to admit the key, may be fastened on by rivets or screws.
The manner in which the lock acts.-The key is put into the lock and
turned to the right hand about one-eighth part of a circle, when it moves the
perpendicular spring and tumbler by the lower part of the key bit, which
moves the stump on the same tumbler from a stump fixed under, or a grove
cut in the bolt, which, being removed, gives liberty for the bolt to to proceed to
its first movement, when the said tumbler returns to its station and lies on
the opposite side of the stump, or in a notch of the groove, and fastens the bolt
at the height of its perpendicular movement, being guided up by the two
cheeks. The key having now performed about a third part of a circle, by
continuing to turn the same it moves the horizontal tumbler or tumblers to
certain limit or limits by a step or steps cut in the key nose, which gives liberty
to the bolt to take an horizontal movement, which is carried along by the key
bit till the stump or stumps on the tumbler or tumblers fall behind a stump or
stumps put at the back of the bolt, or into a notch or notches cut through the
bolt, by a spring or springs put at the back of the tumbler or tumblers, and
secures and fastens the bolt of the lock in the locked position. By turning
the key the contrary way the lock is unlocked, and the heads of the bolt and
the steady pin or pins are brought down level with the selvage. Both the
lock and key may be made with any kind of metal, such as brass, iron, copper,
or any other like metal, either cast or wrought.
In witness whereof, I, the said William Tompson, have hereunto set my
hand and seal, the Twenty-fifth day of January, One thousand eight
hundred and nine
WILLIAM TOMPSON. (L.s.)