Eyes, and other Analogous Appliances.
Year: 1889

page_text: Eyes, and other Analogous Appliances.
I WILLIAM ARTHUR GROCOCK, of Horse Market, Darlington in the County of
Durham, Engineer, do hereby declare the nature of my said invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
My invention relates particularly to bolts, coach screws, clamps, books, eyes and
analogous appliances, in cases where the same have to be fixed and r fixed in the
The screw socket forms a most suitablo
same position any number of times.
receptacle, in conjunction with such appliances, and obviates the necessity of making
fresh holes or plugging up old ones, when from wear or corrosion they have become
too large and unsafe.
The object of my invention is to manufacture screw sockets which will be suitable
for inserting into wood or any other material wherein bolts coach screws, clamps,
hooks, eyes, and other articles as aforesaid are usually fixed. The screw sockets form
suitable receptacles for such articles, and are made capable of adjustment by means of
a screwdriver, key or spanner, or by means of the articles themselves inserted therein.
The screw sockets may be permanently fixed in position by means of a cottar. key, or
other contrivance. The device is also of simple construction, and does not necessarily
require any departure in the make of the bolts and other articles as aforesaid from
what are in ordinary and common use.
And in order that my said invention may be particularly described and ascertained
reference is hereby made to the accompanying drawings, in which similar letters of
reference indicate corresponding parts.
Fig 1 is an external view of a screw socket, having a suitable form of external
thread for some kinds of material into which it may be driven-Fig 2 shows one kind
of screw bolt to fit the female screw a shown by dotted lines in Fig 1. bis a cross
cut to enable a screwdriver to be used in fixing the same. Fig 3 is an end view of
the screw socket.
Fig 4 is an external view of a screw socket, having another form of screw thread
formed thereon, and Fig 7 is a longitudinal section of the same Fig 4.

page_text: Figs 5. 6. 9 and 10 represent some of the articles which may be fitted to the screw
sockets.
I sometimes cut a keyway along part of a screw socket as shown at c in Figs 3 and
7 for the insertion of a key (Fig 8) for holding the same permanently in position ; or
a cottar or other contrivance may be used for the same purpose.
It is obvious that the screw socket may also have a conical or taper shaped exterior,
or an hyperbola entasis from the point of the screw socket, and the female screw may
also be similarly formed.
My invention is also applicable to any other analogous purposes, where a female
screwed hole or receptacle is required, and wherein the male part is required to be
frequently removed and inserted without becoming detrimental to its fit, through wear
or corrosion.
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
1 The manufacture and use of screw sockets having male and female screws formed
thereon and therein, and the application of the same to bolts, coach screws, clamps,
hooks, eyes, and analogous articles, substantially as hereinbefore described and
illustrated by the drawings.
2 The manufacture and use of screw sockets, having male and female screws formed
thercon and therein, one or both of such screws being made conical or tapered, and of
any desired pitch, substantially as hereinbefore described.
3 The manufacture and use of screw sockets as aforesaid, the male screw being
formed with an hyperbola entasis from its point, and with or without the female screw
being coned, substantially as hereinbefore described.
4 The manufacture and use of screw sockets as aforesaid, provided with a cross cut
groove b, for the purpose of applying a screwdriver thereto, substantially as herein-
before described and illustrated by Figs 1. 3. 4 and 7 of the drawings.
5 The formation of a keyway c, for the reception of a key, cottar or other
contrivance for securing the screw socket, substantially as hereinbefore described and
illustrated by Figs 3. 7. and 8 of the drawings.
Dated 20th February 1889.
GEO. DOWNING,
8, Quality Court, London, W.C.,
Agent for the 'Applicant.