Improvements in the Construction of Sockets for Receiving the Ends of Bolts for Doors and the like.
Year: 1897

page_text: Date of Application, 29th Nov., 1897
Complete Specification Left, 29th Aug., 1898- Accepted, 19th Nov., 1898
Improvements in the Construction of Sockets for Receiving the Ends
of Bolts for Doors and the like.
I, ARTHUR WILLIAM ADAMS, of 23, Friern Road, East Dulwich, London, S.E.,
Engineer, do hereby declare the nature of my said invention to be as follows:-
My invention relates to the construction of metallic sockets for receiving the
ends of vertical and other bolts of doors windows, and the like (whether of
round, square, or other section); and its object is to provide means for prevent-
ing the accumulation of dust, dirt, and other obstructive matters, in the working
parts; and also to improve the manufacture of the same.
According to my invention I combine an external tube with a collar and
flange or plate: an internal sliding tube pressed outwards by a spiral spring and
confined in the outer tube by a screwed collar, an additional external Hange or
plate, or a grub screw or pin working in a slot, or other suitable means.
The bottom end of the outer tube may be solid, or open to receive a movable
plug. The inner tube may be variously formed and fitted to enable its outer
end to rise flush with the outer plate in the absence of a bolt. When an ex-
ternal plate is used for that purpose, the outer end is formed with an annular
shoulder which butts against the underside of the outer plate; or the aunular
shoulder may be formed at its lower end to butt against à fixed liner or lugs
may be formed to slide in slots formed in a fixed liner. Screwed caps are some-
times fitted to the inner sliding tube. Grooves are formed in its circumference
to allow dust and the like to fall inside, to prevent the slide becoming clogged.
When a bolt enters the socket the slide recedes and the spring is compressed;
and, on the withdrawal of the bolt the slide immediately rises to the level of
the surface, thereby excluding dust and the like. If a spring should break
another can be readily inserted after unscrewing the end plate and removing
the broken spring.

page_text: the same is to be performed, to be particularly described and ascertained in and
by the following statement:
-
My invention relates to the construction of metallic sockets for receiving the
ends of vertical and other bolts of doors windows, and the like (whether of
round, square, or other section); and its object is to provide means for prevent-
ing the accumulation of dust, dirt, and other obstructive matters, in the working
parts; and also to improve the manufacture of the same.
According to my invention I combine an external tube with a collar and
flange or plate an internal sliding tube pressed outwards by a spiral spring and
confined in the outer tube by a screwed collar, an additional external flange or
plate, or a grub screw or pin working in a slot, or other suitable means.
The bottom end of the outer tube may be solid, or open to receive a movable
plug. The inner tube may be variously formed and fitted to enable its outer
end to rise flush with the outer plate in the absence of a bolt. When an ex-
terual plate is used for that purpose, the outer end is formed with an annular
shoulder which buts against the underside of the outer plate, or the annular
shoulder may be formed at its lowest end to butt against a fixed liner, or lugs
may be formed to slide in slots formed in a fixed liner. Screwed caps are some-
times fitted to the inner sliding tube. Grooves are formed in its circumference
to allow dust and the like to fall inside, to prevent the slide becoming clogged.
When a bolt enters the socket the slide recedes and the spring is compressed;
and on the withdrawal of the bolt the slide immediately rises to the level of
the surface, thereby excluding dust and the like. If a spring should break
another can be readily inserted after unscrewing the end plate and removing
the broken spring.
And in order that my invention may be particularly described and ascer-
tained reference is hereby made to the accompanying drawings in which similar
figures of reference indicate corresponding parts.
Fig. I is a sectional elevation shewing one form of my improved sockets for
the ends of bolts and Fig. 2 is a plan of the collar and flange or plate forming
part of the external tube.
Figs. 3 to 9 show other forms of sockets constructed according to my invention.
Referring to Figs. 1 and 2, 13 is the external tube formed with a flange 15
16 is an internal sliding tube 17 is a nut screwed into the internal tube 18 is a
slot in the tube 16 to admit the end of the screw 19, which prevents the internal
tube 16 rising beyond the floor line and permits the same to recede on the inser-
tion of a bolt 20 is a spiral spring the expansive action of which presses the
inner tube upwards. On withdrawing the screw 19 the tube nut and spring may
be immediately removed for cleansing &c.
In Fig. 3 the internal tube 16 is formed with a solid end 21 and the tube is
retained in the socket by means of an additional plate 22 which engages an
annular shoulder formed upon the tube 16.
In Fig. 4 the internal tube 16 slides in another tube 24 fitted in the external
tube 13. The tube 16 has two lugs 25 which slide in slots 26 formed in the
tube 24, the tube 24 being secured in position by the plate 22 and the lugs 25
preventing the tube 16 rising above the floor line.
Fig. 5 differs from Fig. 4 by dispensing with the lower part of the tube 24
which does not extend below the flange 25.
Fig. 6 illustrates the application of my invention to bolts of square section
each of the sockets herein described being capable of adaptation to bolts of any
sectional form.
Fig. 7 shows another form of socket in which the tube 13 is shewn screwed
to the plate 15 and the inner tube 16 is retained in position by a screwed collar 27.
Figure 8 shews another form of inner tube 16 retained in position by a screwed
collar 27.
In Fig. 9 the inner cylinder 16 is shewn secured in position by a diagonally
fitted screw 28 engaging with the flange 25.

page_text: Figs. 10 and 11 are elevations shewing methods of constructing the inner
tube 16 with modified bayonet joints for the screw 19.
The inner cylinder may be serrated or corrugated for the purpose of preventing
the lodgment of dust and dirt between the surfaces.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
-
1. In sockets for receiving the ends of bolts for doors and the like the combina-
tion of a slotted cylinder 13. having a flange 15, an inner cylinder 16 sup-
ported by a spring 20 and fitted with a screw nut 17 substantially as described
and illustrated by Figs. 1 and 2 of the drawings.
2. In sockets for the purposes aforesaid the several and respective combina-
tions and modifications of the same substantially as herein before described or
referred to and partly illustrated by Figs. 3 to 11 of the drawings.
Dated 29th August 1o.
GEORGE DOWNING & SONS,
S. Quality Court, London, W.C., Agents.
GEORGE DOWNING & SONS,
S. Quality Court, London, W.C., Agents.