An Improved Joint, Permitting of Independent Rotation of the Two Farts, specially applicable to a Valve and its Spindle.
Year: 1899

page_text: An Improved Joint, Permitting of Independent Rotation of the Two
Farts, specially applicable to a Valve and its Spindle.
We, ROBERT SAMUEL LLOYD, of 90, Whitecross Street, in the City of London,
and JAMES. RICHARD DAVIES, of Crescent Rise, Luton, in the County of Bedford,
Engineers, do hereby declare the nature of this invention to be as follows:-
-
Our invention relates to an improved joint permitting of independent rotation
of the two parts and the invention is for example specially applicable to the
connection of a valve and its spindle and further it admits of the parts being
made without any under-cutting whatever.
According to our invention, one part, say, for example, the spindle of a valve
is provided with a central recess in its end face and concentric therewith is a
groove of which one wall is slanting or sloping and the other wall straight or
thereabouts. The other part, say the valve itself, is provided with a short
central stem which is wholly or partly conical and concentric to this stem is a
shoulder, the walls of which are straight or nearly so. When the spindle is
brought near to the valve or other part to be connected thereto, the short stem
of the valve enters the central recess in the said spindle and on forcing the two
together the aforesaid shoulder on the valve is forced into the concentric recess
in the spindle while the part or shoulder on the spindle formed by the metal
between the central recess and the said concentric groove is displaced by the
coned part of the central stem of the valve. The result obtained is that the con-
centric shoulder on the valve is decreased in diameter at the top and the shoulder
on the spindle formed between the central recess and the concentric groove is
correspondingly increased, the two concentric shoulders therefore interlock, but
the spindle and the valve are not locked so as to prevent of their revolution
independently of each other.
As much bearing surface as is required may be arranged for outside of the
shoulders and grooves on the two parts or for the bearing surfaces, one may
depend partially or wholly on the central stem and the corresponding central
recess.
It is evident also that we do not wish to limit ourselves to the number of
grooves and shoulders herein before referred to as the construction may be varied
in several respects without departing from our invention.
L m
th 1 Talma 1900

page_text: An Improved Joint, Permitting of Independent Rotation of the Two
Parts, specially applicable to a Valve and its Spindle.
We, ROBERT SAMUEL LLOYD, of 90, Whitecross Street, in the City of London,
and JAMES RICHARD DAVIES, of Crescent Rise, Luton, in the County of Bedford,
Engineers, 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:-
Our invention relates to an improved joint permitting of independent rotation
of the two parts and the invention is for example specially applicable to the
connection of a valve and its spindle and further it admits of the parts being
made without any undercutting whatever.
According to our invention, one part, say for example, the spindle of a valve
is provided with a central recess in its end face and concentric therewith is a
groove of which one wall is slanting or sloping and the other wall straight or
thereabouts. The other part, say the valve itself, is provided with a short
central stem which is wholly or partly conical and concentric to this stem is a
shoulder the walls of which are straight or nearly so. When the spindle is
brought near to the valve or other part to be connected thereto, the short stem
of the valve enters the central recess in the said spindle and on forcing the two
together the aforesaid shoulder on the valve is forced into the concentric recess
in the spindle while the part or shoulder on the spindle formed by the metal
between the central recess and the said concentric groove is displaced by the
coned part of the central stem of the valve. The result obtained is that the con-
centric shoulder on the valve is decreased in diameter at the top and the shoulder
on the spindle formed between the central recess and the concentric groove is
correspondingly increased, the two concentric shoulders therefore interlock but
the spindle and the valve are not locked so as to prevent of their revolution
independently of each other. As much bearing surface as is required may be
arranged for outside of the shoulders and grooves on the two parts or for the
bearing surfaces one may depend partially or wholly on the central stem and the
corresponding central recess.
It is evident also that we do not wish to limit ourselves to the number of
grooves and shoulders herein before referred to as the construction may be varied
in several respects without departing from our invention but in any case all the
conical parts, the grooves or recesses and the rims or projections to be herein-
after more particularly described and shown may he made in a lathe or similar
machine tool without moving the cutter or the work in more than one direction.
Figure 1 of the accompanying sheet of drawings represents a valve spindle
partly in elevation and partly in section and a jumper or upper part of a valve
in section before the two parts are connected.
Figure 2 is a similar view of the same showing the 'two parts connected.
Figure 3 represents a modification in which the valve spindle is partly in
elevation and partly in section and in which the jumper is in section.
Figure 4 is an elevation partly in section of an alternative construction show-
ing the parts before they are connected and
Figure 5 shows them connected.
Figures 6 and 7 represent partly in elevation and partly in section a simplified
form before and after the two parts have been connected respectively.
Figure 8 is view partly in section and partly in elevation of another modifica-
tion but only slightly differing in construction from that shown in Figures 6 and 7.

page_text: Figures 9, 10 and 11 are elevations partly in section of yet another modifica-
tion showing the parts respectively before connection, when partly connected
and finally when entirely connected.
Referring to Figures 1 and 2, it will be seen that one part say for example,
the spindle A of a valve is provided with a central recess B in its end face and
concentric therewith is a groove C of which the outer side is curved or slanting
towards the centre and the other or inner side of the groove is straight or there-
abouts. The other part say the jumper 1 of the valve as shown. (or it may be
the valve itself) is provided with a central stem E which is wholly or partly
conical and concentric to this stem is an annular shoulder, projection or rim F
of which the sides are straight or nearly so. When the spindle A is brought
near to the jumper D, valve or other part to be connected thereto, the short
stem of the jumper enters the central recess B and on forcing the two together
the aforesaid rim F is forced into the concentric recess C in the spindle while
the annular rim G on the spindle formed by the metal between the central
recess B and the concentric groove C is displaced by the coned part of the central
stem E of the jumper 1). The result obtained as shown in Figure 2 is that
the rim F is decreased in diameter at the top and the rim G on the spindle is
correspondingly increased at the bottom the two concentric rims therefore inter-
lock, but the spindle A and the jumper D or other part are not locked so as to
prevent their revolution independently of each other.
Figure 3 represents a modification in which the. spindle A is provided with a
cone E and an annular rim F and the jumper D has a recess B¹ and an
annular rim G¹.
of
In Figure 4 the one part, say for example the valve spindle A is provided with
a central recess B in its end face and concentric therewith is a groove C, the
sides of which are formed by the concentric rims G and H and both these rims
have their lower edge or edges rounded off or chamfered. The jumper D or
other corresponding part is provided with a central stem E, which is wholly or
partly conical and concentric to this stem is an annular projection or rim
which the sides are straight or nearly so and the top edge or edges rounded off
or chamfered. When the spindle A is brought near to the jumper D the short
stem E of the jumper enters the central recess Band on forcing the
two parts together the aforesaid rim F is forced into the concentric recess C in
the spindle while the annular rim G on the spindle formed by the metal between
the central recess B and the concentric groove C is displaced by the coned part
of the central stem E of the part D. The result obtained, as shewn in Figure 5,
is that the rim F is decreased in diameter at the top and the rims G and H on
the spindle are correspondingly increased at the bottom, the concentric rims
therefore interlock, but the parts A and D are not so locked as to prevent their
revolution independently of each other.
Referring to Figures 6 and 7 one part, say the spindle A Figure 6, is provided
with an annular projection, ridge or rim G and a central recess B, and the other
part say the jumper D or the valve has an annular groove or recess D¹ the inner
wall of which forms a central conical stem E. When the spindle A is brought
near to the jumper D, valve or other part to be connected therto, the annular
rim G enters the recess I₁ and on forcing the two parts together, the conical
stem E enters the recess B and expands the rim G until the two parts are
brought as close together as possible, as shewn in Figure 7, but the parts are
not so locked as to prevent their revolution independently of each other.
The construction shewn in Figure 8 is very similar to that just described
except that the diameter of the groove ¹ is smaller at the bottom than at the
top and consequently the conical part E2 is greater in diameter above than
below. The diameter of the rim G is contracted as it enters the groove ])¹.
Referring to Figures 9, 10, and 11, one part, say for example the spindle A
of a valve is provided with a central recess B in its end face and with an annular
rim G. The other part say the jumper D of the valve as shown (or it may be

page_text: the valve itself) is provided with a central stem E which is wholly or partly
conical and concentric to this stem is an annular projection or rim F of which
the sides are straight or nearly so.
When the spindle A is brought near to the
jumper D, valve or other part to be connected thereto, the conical stem E of the
valve enters the central recess B and on forcing the two parts together, the
annular rim G on the spindle is displaced by the coned part of the stem E of the
jumper D. The result obtained, as shewn in Figure 10, is that the rim G on
the spindle is increased in diameter to conform to the shape of the coned part E.
The outer rim F is, as shewn in Fig. 11, then spun in or merely squeezed so as to
conform to the contour of the rim G. The two concentric rims therefore inter-
lock but not so as to prevent the revolution of the parts A and D independently
of each other.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
1. A joint permitting of independent rotation of the two parts the one part
having a central coned stem and an annular groove or grooves the other part
being provided with a central hole and an annular rim or rims substantially as
set forth.
2. A joint permitting of independent rotation of the two parts the one part
having a central coned stem, an annular groove and an annular rim and the other
part being provided with a central hole, an annular rim and an annular groove
substantially as described and shewn with reference to Figures 1, 2 and 3.
3. A joint permitting of independent rotation of the two parts, the one part
having a central coned stem an annular groove and an annular rim with parallel
sides and the other part being provided with a central hole, an annular groove
or recess and an annular rim with parallel sides substantially as described with
reference to Figures 4 and 5.
4. A joint permitting of independent rotation of the two parts, the one part
having a central coned stem and an annular groove and the other part being
provided with a central hole with parallel sides before the parts are joined
together and with an annular rim substantially as described with reference to
Figure 6, 7 and 8.
5. A joint permitting of independent rotation of the two parts, the one part
having a central coned stem, an annular groove and an annular rim and the other
part being provided with a central hole and an annular rim substantially as
described and shewn with reference to Figures 9, 10 and 11.
anth day of November 1899
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.