Stair Rod and other Screw Eyes.
Year: 1885

page_text: Stair Rod and other Screw Eyes.
I, GEORGE WILLIAM HERBERT, of 74 and 75, Dean Street, Birmingham,
Warwickshire, Manufacturer, 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 reference being had to the accom-
panying drawing and to the letters and Figures marked thereon, that is to say:
My Invention consists in the improvements in the manufacture of picture screw
rings and stair rod and other screw eyes as herein described. A common form of
picture screw ring consists of a solid eye through which is threaded a wire ring the
ends of which ring are afterwards soldered to ether. The said soldering of the
ring is expensive and the ring is liable to break. By my Invention I am enabled
to use a solid ring and to add considerably to its strength and to the strength of
the screw eye and to cheapen the manufacture of the same.
On the accompanying drawing Fig. 1 is a front view and Fig. 2 a side view of a
picture screw ring constructed according to iny Invention; Figs. 3, 4, 5 and 6
illustrate the construction of the ring of the same as hereinafter described; Fig. 7
shews a partly bent eye to be formed into the screw eye of the picture screw ring
illustrated by Figs. 1 and 2; Fig. 8 represents a washer for holding the said bent
eye together as hereinafter described; Figs. 9, 10 and 11 illustrate the method of
fixing together the parts of the picture screw ring illustrated by Figs. 1 and 2;
Figs. 12, 13, 14 and 15 illustrate a modified form of the picture screw ring
illustrated by. Figs. 1 and 2; Figs. 16, 17 and 18 illustrate the construction of &
screw eye made from half round wire according to my Invention and Fig. 19 shews
the collar for the same separately.
The same letters of reference indicate the same parts in all the Figures.
In forming a picture screw ring according to my Invention I prefer to use what
is known as a solid "covered" ring the construction of which is illustrated by
Figs. 3, 4, 5 and 6. The solid ring consists of an inner wire ring a¹ (see Fig. 3) the
ends of which are preferably not joined together which is inserted in the hollow
sheet metal ring A preferably of brass (see Fig. 4) as shewn in Fig. 5; the ring A
is then closed over the inner ring a¹ (see Fig. 6) by means of suitable tools so as to
entirely cover it and form a strong picture ring. I take a loop of metal B pre-
ferably "half round" in cross section (but round, square, oval or other section of

page_text: wire may be used as hereinafter described) the half shanks b, b, being (see Fig. 7)
far enough apart to admit the ring A into the top of the looped part b¹ (see Fig. 9).
By suitable dies in a press or by other means I close together the shanks b, b, of
the loop B (see Fig. 10) and then fix them together by passing them through a
metal collar or washer C, shewn separately by Fig. 8 which is firmly pressed on to
the shanks b, b, by suitable dies in a press or by other suitable means.
The partly
finished picture screw ring now appears as represented in side elevation by Fig. 11
after which it is finished (see Figs. 1 and 2) by the shank b having a screw thread
formed upon it which may be performed by any ordinary screwing process or
processes. A soldered, split or other ring may be used with the screw eye as above
described instead of the solid covered ring herein before described and illustrated in
the accompanying drawing.
In making a screw eye (see Figa. 16, 17, 18 and 19) for stair rods or purposes
other than picture screw rings according to my Invention I proceed as above
described with reference to a screw eye for a picture screw ring except that the
ring A is omitted.
The washers or collars C may either be cast, stamped, forged or formed in any
other suitable manner. I sometimes recess the upper part of the collar C (see
Fig. 19) at c so that it will fit high up into the neck of the screw eye (see Figs. 16,
17 and 18). I sometimes employ a hollow collar C₁ formed as represented by
Fig. 13 for fixing the split shank b together which can be threaded on to the
shank 6 (see Fig. 12) and then pressed together or flattened (see Figs. 14 and 15).
so as to affix it firmly to the shank b.
Instead of fixing together the halves b, b, of the shank by means of a previously
formed collar as above described the partly formed screw ring represented by
Fig. 10 may be placed in a suitable sand or other mould and a collar Ċ cast around
the shank b and afterwards finished by suitable dies in a press.
Screw eyes forming parts of picture screw rings or to be used for other purposes
can be made of round, square, oval or other section of wire their half shanks being
pressed together to form a single split shank preferably round in cross section
similarly as herein before described with reference to a screw eye of half round wire
as illustrated in the accompanying drawing.
The collar C for attaching the halves b, b, of the split screwed shank together as
herein before described may sometimes be dispensed with especially when using
mild steel wire and which for some screw eyes will be found of sufficient hardness
to maintain their form without the use of the collar C.
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 clain is
1. The improvements in the manufacture of picture screw rings hereinbefore
described with reference to the accompanying drawing, that is to say, forming the
screw eye part thereof of a loop of wire to embrace the ring part thereof and
attaching together the halves b, b, of the split shank of the eye by a collar as
described and represented and afterwards forming a screw thread on the split
shank thereof as described and illustrated.
2. The improvements in the manufacture of picture screw rings hereinbefore
described with reference to the accompanying drawing, that is to say, forming the
screw eye part thereof of a loop of wire to embrace the ring part thereof as
described and represented and afterwards forming a screw thread on the split
shank thereof as described and illustrated.
3. A picture screw ring consisting of a solid covered ring as described and
represented in combination with a screw eye having a split shank as described and
illustrated.:
4. The improvements in the manufacture of stair rod and other screw eyes
hereinbefore described and illustrated in the accompanying drawing, that is to say,
forming the screw eye of a loop of metal so as to form a longitudinally split shank

page_text: as described and illustrated and attaching together the halves b, b, of its split shank
by a collar as described and illustrated and afterwards forming a screw thread on
the split shank thereof as described and illustrated.
5. The improvements in the manufacture of stair rod and other screw eyes
herein before described and illustrated in the accompanying drawing, that is to say,
forming the screw eye of a loop of metal so as to form a longitudinally split shank
as described and illustrated and afterwards forming a screw thread on the split
shank as described and illustrated.