Improved Socket Joint or Coupling for Rods and the like.
Year: 1897

page_text: Date of Application, 19th Mar., 1897
Complete Specification Left, 17th Dec., 1897-Accepted, 12th Feb., 1898
PROVISIONAL SPECIFICATION.
Improved Socket Joint or Coupling for Rods and the like.
JOSEPH EPHRAIM, Brass and Iron Founder, Chimney Sweep and Drain Cleansing
Machine Manufacturer, 59, Pitfield Street, Hoxton, N., do hereby declare the nature
of this invention to be as follows:-
I make my improved socket joint or coupling in suitable metal, in two parts,
called respectively male & female sockets, to be fastened with a set screw & a
novel method of preventing the screw from coming out & being lost. In the first
place I undercut the metal in the part where the set screw or winged screw is to
be placed, I then put in the screw and expand the wings of the screw into the
recess allowing space for screw to rise and fall as desired.
In some of the joints the screw is sunk below the surface of the metal then I
close or beat the metal partly over the screw to prevent it coming out allowing
sufficient room for screw to work.
I, JOSEPH EPHRAIM, of 59, Pitfield Street, Hoxton, in the County of London,
Chimney Sweep and Drain Cleansing Machine Manufacturer, and Brass and Iron
Founder, 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:-
This invention relates to improvements in socket joints or couplings for rods and
the like of the kind described in former Letters Patent No. 13325 of 1885.
In the said former patent a joint is described wherein the two parts to be joined
were formed respectively with male and female sockets designed to be secured
together by a set screw.
The subject of this invention comprises novel means for preventing the set screw
from becoming detached from the joint. For this purpose I recess that part of the
joint which receives the set screw and form the recess with an undercut; I then,
after the said set screw has been inserted, expand the lateral wings thereof under-
neath the said undercut portions which are of sufficient height to allow for
space
the said screw to rise the necessary height for releasing the joint. Or, in some
cases, the said screw is sunk below the surface of the socket and is then retained in
position by burring over the edge of the screw-threaded hole over the upper end
thereof, sufficient room being left for allowing the screw to work.

page_text: To enable my invention to be fully understood I will describe it by reference to
the accompanying drawing, in which:-
--
Figure 1 is a plan of a joint having my improvements applied thereto :
Figure 2 is a longitudinal section thereof:
Figure 3 is a plan of a portion of a rod shewing two sections connected together
by a sunk screw:
Figure 4 is a longitudinal section thereof; and,
Figure 5 is an elevation of a key which I advantageously employ in connection
with the latter form of joint.
a and b are the two parts of the joint and a¹ and 6 the socket and projection
formed upon the ends thereof respectively, the projection 6' fitting into the socket a¹
as shewn, and the two parts being held together by the set screw c, as clearly shewn
in Figures 2 and 4 and described in the said former patent.
Referring now to the construction shewn in Figures 1 and 2, the set screw is
operated by the lateral wings c¹ which, when the screw c is first screwed into position
in the hole, are of the shape indicated by the dotted lines in Figure 1. d, d are the
undercut ends formed in the recess made to receive the screw so that when the
lateral wings c¹, c¹ are expanded to the shape shewn in full lines, the ends thereof
project under the said undercut surfaces and the set screw is prevented from leaving
the socket a¹ but is allowed sufficient movement to release the part 61 from the said
socket.
In the construction illustrated in Figures 3 and 4, the screw c is sunk in the
socket a¹ and is permanently held in the said socket by burring over the edges a²; a²
of the hole a³ in which the screw c is sunk. To turn the set screw e in the hole I
provide a key, shewn in Figure 5, the said key having a taper square projection
designed to enter the taper hole a in the set screw c and also a pointed projection e'
which can be employed for clearing out the hole a³ when necessary.
e
It will be understood that my improved joint is applicable to ram rods, chimney
sweeping machines, drain cleansing machines and to all rods made in lengths and
which require to be quickly and securely connected together or taken apart.
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 a socket joint of the hind hereinbefore described forming the recess in the
socket with undercut edges under which the wings of the set screw are expanded,
substantially as, and for the purpose, described and as illustrated in the accom-
panying drawing.
2. In a socket joint of the kind hereinbefore described and wherein a sunk set screw
is employed, burring over the edge of the hole in which the set screw is sunk,
substantially as, and for the purpose, hereinbefore described and as illustrated.
3. The improved joints hereinbefore described and illustrated respectively in
Figures 1 and 2, and 3 and 4 of the accompanying drawing.
Dated the 17th day of December 1897.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.