Improvements in Bolts for Doors and Gates.
Year: 1891

page_text: Date of Application, 27th Feb., 1891
Complete Specification Left, 26th Nov., 1891-Accepted, 2nd Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Bolts for Doors and Gates.
We, HENRY RICHARD JOHN DENTON, of Saint Mark's Foundry, Wolver-
hampton in the County of Stafford, Engineer and Ironfounder, and HARRY
STEPHENSON DENTON, of the same address, Engineer, do hereby declare the
nature of this invention to be as follows:-
A bolt constructed according to this invention has a round sliding bar or rod,
forming the bolt proper, carried, as is usual, in staples or a sheath fixed to the plate
by which the bolt is connected with the door or gate; and a suitable stop of the
usual character is fixed to the plate in position to prevent the bolt being moved
back beyond the point necessary to draw it clear of the staple on the jamb or post
of the door or gate to which the bolt is applied. A cheek or keep is fixed at its
inner edge to the plate, and projects consequently outwards therefrom. The bar
An arm, forming the
or rod passes through a hole formed therefor in the cheek.
bolt handle, projects at right angles from the hinder end of the bar or rod, and a
lug projects from the bar or rod in such position therealong that its hinder end is
forward of the front side of the arm a distance slightly more than the thickness of
the cheek. A notch is formed out from the hole in the cheek through which the
bar or rod passes, of such size as will just allow the lug to pass through when
brought immediately opposite to it and the bar or rod moved end ways. The bolt
is fastened by turning it into position to bring the lug opposite the notch, and then
moving it forwards to pass the lug through the notch and bring the arm against the
rear face of the cheek, and then moving the arm radially to turn the bolt axially
and bring the lug out of coincidence with the notch, whereby the lug will press
against the forward face of the cheek if an attempt is made to move the bar or rod
back endways, that is, in the direction to unfasten it. To unfasten the bolt, the
bar or rod must first be turned to bring the lug opposite the notch, and this of
course cannot be done from the opposite side of a door or close gate to that on
which the bolt is fixed. As an additional security, however, and as a necessary
feature when it is desired to prevent the bolt being unfastened from the side of the
door or gate on which the bolt is fixed, a hole to receive a padlock shackle is formed
through the cheek, as in the case of other padlock bolts, and a padlock is fastened
thereto, the hole being of course in such position that the padlock shackle will
come across the arm aforesaid when the bolt is fastened and prevent it being
moved to turn the bar or rod in a direction to bring the lug opposite the
notch.
According to one modification of this invention, the notch is formed at the upper
side of the hole in the check through which the bar or rod passes, and after the lug
has been passed therethrough to fasten the bolt the arm is turned down to bring
A bolt constructed
itself and the lug to project downwards from the bar or rod.
according to this modification is extremely difficult to tamper with successfully
from the opposite side of the door, as the arm has to be pushed up into a vertical
position to bring the lug opposite the notch, and any instrument used for this
purpose is very liable to slip off the arm as the latter rises towards a vertical
position. In this case, only one hole is formed through the cheek for a padlock
shackle.
According to another modification, specially for use as a double-handed bolt,
that is a bolt which may be fixed with equal convenience to a door or gate opening
right or left hand, the notch is formed out from the outer side of the hole in the
cheek through which the bar or rod passes, and two holes are formed for a padlock

page_text: shackle, one being for use when the bolt is fixed one hand and the other when it is
fixed the opposite hand.
ليمد
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1
STEPHEN WATKINS,
Wolverhampton, Agent for the Applicants.
'
COMPLETE SPECIFICATION.
Improvements in Bolts for Doors and Gates.
We, HENRY RICHARD JOHN DENTON, of Saint Mark's Foundry, Wolver-
hampton in the County of Stafford, Engineer and Ironfounder, and HARRY
STEPHENSON DENTON, of the same address, Engineer, 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 :-
A bolt constructed according to this invention has a round sliding bar or rod,
forming the bolt proper, carried, as is usual, in staples or a sheath fixed to the
plate by which the bolt is connected with the door or gate; and a suitable stop of
the usual character is fixed to the plate in position to prevent the bar or rod being
moved back beyond the point necessary to draw it clear of the staple on the janib
or post of the door or gate to which the bolt is applied. A check or keep is fixed
at its inner edge to the plate, and projects consequently outwards therefrom, the
bar or rod passing through a hole formed therefor in the cheek. An arin, forming
the bolt handle, projects at right angles from the bar or rod, preferably at the
hinder end thereof, and a lug projects from the bar or rod, preferably in such
position therealong that its hinder end is forward of the front side of the arm a
distance slightly more than the thickness of the check. A notch is formed out
from the hole in the cheek through which the bar or rod passes, of such size as will
just allow the lug to pass through when brought immediately opposite to it and the
bar or rod moved endways. The bolt is fastened by turning it into position to
bring the lug opposite the notch, and then moving it forwards to pass the lig
through the notch, and then moving the arm radially to turn the bolt axially and
bring the lug out of coincidence with the notch, whereby the lug will press against
the forward face of the check if an attempt is made to move the bar or rod back
end ways, that is, in the direction to unfasten it. To unfasten the bolt, the bar or
rod must first be turned to bring the lug opposite the notch, and this of course
cannot be done from the opposite side of a door or close gate to that on which the
bolt is fixed. As an additional security, however, a hole to receive a padlock
.. shackle may be formed through the cheek, as in the case of other padlock bolts,
the hole being of course in such position that the padlock shackle will come across
the arm aforesaid when the bolt is fastened and prevent it being moved to turn the
bar or rod in a direction to bring the lug opposite the notch. The check or keep
answers the purpose also of a staple, and may be used therefore (in the case of a
bar being carried in staples) in substitution for one of the staples usually
employed.
In order that the invention may be readily understood we have appended hereto
a sheet of drawings, of which
Figure I shews, in front elevation with the bar drawn back, a bolt constructed
according to one modification of this invention;
Figure 2 is a similar view, but shews the bar shot out;
Figure 3 is a section taken on line aa of Figure 2; and
Figure 4 is a corresponding view to Figure 3 of a modification of the invention
for the purpose of making the bolt double-handed so that it may be fixed, with
equal convenience in use, to a door or gate opening either right or left hand.
Referring, first, to Figures 1, 2 and 3, the bar A, forming the bolt proper, is
carried in a staple B at its forward end as usual (or in a sheath or barrel), and its

page_text: hinder end passes through a round hole formed through a cheek C, which forms an
inner staple. A stop D is riveted to the plate E to prevent the bar being drawn
back unnecessarily far. The cheek C is riveted at its inner edge to the plate E,
and stands forwards at right angles thereto. An arm a, forming the bolt handle,
projects from the hinder end of the bar, and a lug projects from the bar in the
position shewn. A vertical notch or slot c, formed up from the hole through the
cheek through which the bar passes, allows of the projection being passed there-
through when the handle a is raised up into a vertical position and the bar moved
endways. The arm a normally hangs down, as shewn, and the bar cannot be moved
endways to unfasten the bolt without first raising the arm into a vertical position,
as when the arm is in any other position the lug is stopped against the forward
side of the cheek. A holt constructed according to this modification is consequently
extremely difficult to tamper with successfully from the opposite side of the door,
as any instrument used for the purpose of raising the arm is very liable to slip off
as the arm approaches its vertical position. For additional security, and also to
prevent the bolt being unfastened from the inside, the cheek is formed with an
outward extension d through which a hole e is formed to receive a padlock shackle.
The opening marked, Figure 3, is merely where metal is omitted along the inner
edge of the cheek on account of the narrow space between the bar and the plate E
at such part.
Referring, now, to Figure 4, the notch is formed horizontally, instead of
vertically as shewn in Figure 3, and two holes e are formed for a padlock shackle,
one being for use when the bolt is fixed one hand, and the other when it is fixed
the opposite end. In other respects this bolt is the same as that illustrated by
Figures 1, 2 and 3. According to this modification it will be seen that the arm a
must be raised into a horizontal position, whichever hand the bolt is fixed, before
the bolt can be unfastened. It is not essential, though preferred, that the notch
shall be horizontal, as it will answer the purpose more or less efficiently if it is
formed out somewhat above or below the middle of the hole through the cheek,
being in such case, of course, inclined.
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. In a bolt for a door or gate, the combination of an arm upon the sliding bar,
with a lug projecting from such bar and a notch or slot in a check through which
such bar passes, substantially as described, for the purpose set forth.
2. A double-handed bolt for a door or gate, having an arm upon the sliding bar,
in combination with a lug projecting from such bar, and a notch or slot formed in a
horizontal or inclined direction from a hole in a cheek through which such bar
passes, substantially as described.
3. A double-handed bolt for a door or gate, having an arm upon the sliding bar,
in combination with a lug projecting from such bar, and a notch or slot and also
two holes, through either of which a padlock shackle may be passed, formed in a
check through which such bar passes, substantially as described and shewn.
4. Bolts for doors and gates constructed substantially as herein described and
shewn (according to two modifications) by the drawings herewith, for the purpose
or purposes set forth.
Dated this 25th day of November 1891
STEPHEN WATKINS,
Wolverhampton, Agent for the Applicants.