Improvements in Flush and Knob Bolts for Doors, Casements, and other Articles.
Year: 1889

page_text: Date of Application. 13th Nov., 1889
Complete Specification Left, 13th Aug, 1890-Accepted, 20th Sept., 1890
PROVISIONAL SPECIFICATION.
Improvements in Flush and Knob Bolts for Doors, Casements, and
other Articles.
I, HENRY KING of Queen Victoria Street in the City of London, Merchant do
hereby declare the nature of this invention to be as follows:-
Ordinary sunk-slide bolts, are provided with, or are made to shoot within, enclosing
casings, frames, or sunken guides, let within and below the surface of a door, drawer,
window or other article, with which the said bolts are used.
My invention has for its object principally, to simplify the construction of the
said bolts, by making them caseless, or without metallic guides, as herein-after
described.
I will first describe my invention, in connection with a flush sunk-slide bolt.
The bolt, which is made half round, square, or other figure in cross section, works
or slides within an open channel or groove, formed or sunken within, the surface of a
door or other article; and which channel, is of the cross section of the bolt, whose
outside face or surface, lies perfectly flush with the surface of the door or article, as
aforesaid.
The bolt is kept to the channel, and its motion limited, by the shanks of headed
screws, passing through counter-sunk longitudinal slots or holes made within the bolt,
and with the ends of the said screws, taking into the door or other article, at the
bottom of the channel.
The entrances to the slots, or holes, which limit the movement of the bolt, are
counter-sunk to the angle or figure of the underside of the screw heads, so that the '
said countersinks, with the heads of the screws, which form stops, admit of perfect
adjustment, in affixing.
Directed crosswise near the end of the bolt, is a thumb or finger groove or channel,
adapted for shooting or withdrawing the bolt.
In applying my invention to a knob bolt, a thumb knob or protuberance is
substituted for the transverse groove or channel in the flush-bolt.
The heads of the screws may be conical or parallel, whilst their shanks are of
the breadth of the lower part of the guide and limiting slots, passing through the
bolt.
The countersinks are shaped according to the configuration of the head of the
screw, whilst the bolt itself may be made from short lengths of section rods, tubes, or
the like.
Although I have described the bolt as sunk yet the same may only be semi-sunk as
in the case of the shoots of French casemonts.
Dated this 8th day of November 1889
COMPLETE SPECIFICATION.
) Improvements in Flush and Knob Bolts for Doors, Casements, and
other Articles.
I, HENRY KING, of Queen Victoria Street, in the City of London, Merchant, 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:
Ordinarily sunk-slide bolts, are provided with, or are made to shoot within, enclosing
casings, frames, or sunken guides, let within, and below the surface of a door, drawer,
window, or other article, with which the said bolts are used.

page_text: My invention has for its object principally, to simplify the construction of the
said bolts, by making them caseless, or without metallic guides, as hereinafter
described.
I will first describe my invention in connection with a flush-sunk-slide-bolt.
The shoot, which is made half-round, square, or other figure in cross section, works
or slides within an open channel or groove, formed, or sunken within, the surface of
a door, or other article; and which channel is of the cross section of the shoot, whose
outside face or surface, lies perfectly flush with, the surface of the door, or article, as
aforesaid.
The shoot is kept to the channel, and its motion limited, by the shanks and heads of
headed screws, passing through countersunk longitudinal slots or holos made within,
and through the shoot a, and with the ends of the said screws, taking into the door
or other article, at the bottom of the channel.
The entrances to the slots, or holes, which limit the movement of the bolt, are
countersunk to the angle or figure of the underside of the screw heads, so that the
said countersinks, with the heads of the screws, which form stops, admit of perfect
adjustment, in affixing.
Directed cross-wise near the end of the bolt, is a thumb or finger groove or channel,
adapted for shooting or withdrawing the bolt.
In applying my invention to a knob-bolt, a thumb knob, or protuberanco, is
substituted for the transverse groove, or channel, in the flush bolt.
The heads of the screws may be conical or parallel, whilst their shanks are of the
breadth of the lower part of the guide and limiting slots, passing through the bolt.
The countersinks are shaped according to the configuration of the head of the screw,
whilst the bolt itself may be made from short lengths of section rods, tubes, or the
like.
Although I have described the bolt as fully sunk, yet the same may if necessary,
only be semi-sunk.
Figure 1 of the accompanying drawings, represents in front elevation, a caseless
sunk-slide bolt, constructed according to my invention, and fitted to a door.
One of
the heads of the screws, which take through the longitudinal guide slots, is shown in
section, in order to exemplify how the shanks of the said screws, take and fit evenly
within the grooves.
Figure 2 represents a longitudinal_vertical section of the said bolt and door, with
its framing, upon the dotted lines A B, Figure 1.
Figure 3 represents a cross section, on the dotted lines CD Figure 2, whilst
Figure 4 is a cross section, on the dotted lines E F, of the said Figure 2, thus
showing the half round character of the shoot, which slides within a like shaped
channel or groove.
Figure 5 is an edge view of the bolt, and Figure 6 a front and end view of the
same, separately.
The same letters of reference indicate corresponding parts in Figures 1 to 6.
a is a half-round shoot, with the curved part of it, presented inwards, and working
within a like shaped open channel or groove b, sunken or formed within the surface of
the door b², in manner, that the top or side Hat a², of the said shoot, lies flush with the
surface of the door, thus constituting a caseless flush-sunk-slide-bolt.
The shoot is kept to a proper bearing within its channel, and also its motion limited,
by the shanks and heads of headed screws c, passing through countersunk and slotted
longitudinal holes a³, made within and through the shoot a, and with the ends of the
screws, taking within the door or other article, to which the said shoot is applied.
The countersinks (which are marked a) at the entrances to the slots a³, are made to
correspond with the angle of the undersides of the heads of the screws c, and admit
of the shoot being perfectly adjusted to their bearings.
The shoot's rear end, has a thumb or finger groove a³, whereby the shooting or
withdrawal of the bolt is performed.
The shoot's fore end, takes within a staple plate or socket d, d³, secured to the
framing e, of the door b³.

page_text: Figure 7 represents in front elevation, partly in section, my caseless flush sun-
slide bolt, applied as a fastener, for securing French casements or windows.
Figure 8 represents a transverse vertical section upon the dotted lines G H,
exhibiting the means for simultaneously operating the bolts in opposite directions, for
fastening and unfastening.
Figure 9 represents a full size casement, with the caseless bolt or bolts, upon a
reduced scale.
a, a, are two caseless and flush sunk shoots, with all-through slots a³, a', with guide
and limiting screws c, passing through them, and taking into the door 2, which has an
open channel, wherein the shoot slides.
The bolts are operated simultaneously, and in opposite directions, by a lever f,
connected to the axis of a toothed quadrant g, which gears with a second quadrant h.
These toothed quadrants, have armis g, h, respectively, and work upon their axes in
opposite directions, and with their arms g, h, provided with front and back studs g³, h³,
which take into cross grooves a³, of the caseless flush bolts a, and into slots ³, of a
bed plate i, respectively.
The recedance of the arms, by the turning of the lever f, in the direction indicated
by the arrow, throws the shoots, by the back studs, travelling within the cross grooves
of the shoots, and the front studs, travelling within the slots of the base plate, which
is secured by small screws to the window of the casement.
These said slots 2, may limit and steady the movements of the shoots, when the
pins c, are not adapted to fulfil this function.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed 1 declare that what I
claim is :-
First: A caseless and flush-sunk-slide-bolt, consisting of shoot, working within a
channel or groove, of, or about, its cross section, substantially as described and set
forth.
Secondly A caseless and flush-sunk-slide-bolt, consisting of a shoot a, working
and lying within a channel or groove b, and having holes or gaps a³, a*, wherein and
wherethrough, the heads of screws c, take, and pass, whoreby the said shoot is
guided and limited in its motion, substantially as described and set forth in
Figures 1, 2, 3 and 4.
Thirdly A French casement fastener, consisting of caseless, and flush-sunk-slide
bolts, combined with parts and mechanism for the operation and working of them,
substantially as described and set forth in Figures 7, 8, and 9.
Dated this fith day of August 1890,
Dated this with day or August 1890.
HENRY KING.
By Henry Skerrett,
6, Livery Street, Birmingham, Agent for Applicant.