Improvements in Gas and like Pendants.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Gas and like Pendants.
I, HARRY TEE, of 50 Castle Street, Liverpool, in the County of Lancaster,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has reference to pendants for gas and other lamps. of the
extendable or telescopic type; and it has for its object to provide improvements
connected with pendants of this type by which those of considerable weight may
be used and worked without the assistance of balance weights, as usually
employed.
According to this invention, pendants are made of a fixed inner tube, supported
say by a ball and socket joint to the gas pipe, or connection above, and a sliding
external tube carrying the lamp or lamps, and sliding up and down on the fixed
tube, a stuffing box being provided on the upper end, by which a sliding gas-tight
joint is made with the fixed tube. As a means of holding this outer tube in the
upper position, a suitable coupling device, as of the bayonet joint type, hooks, or
other coupling, is employed on the upper end of the tubes, and the connection may
be suitably made by turning the lower tube partly round on the inner one, the
upper part of the connection being stationary.
According to a further part of this invention, pendants of the type above
referred to are constructed and adapted to be moved up and down, and to be held
in any intermediate position without the use of counter-balance weights, by the
employment in connection with same, of a frictional device which grips or bears on
the sliding tube, or is made to bear thereon, or grip same; so that when moved to
any position, it will hold or grip automatically the tube, or be caused to grip or
hold it. One means under this improvement consists of a spring in the end of, or
connected to, the outer tube (which may be the fixed or sliding one), which bears
or grips normally on the inner tube. Or, a spring may press a gripping or
clamping device onto said tube; or, the weight and friction may cause a part or
device to press on said tube. If the spring be used, it may be of a flat type,
gripping the tube, and fastened or held in a box (say in the gland, when a gland is
used) round said tube, or supported externally therefrom; or, it may be of the
spiral kind, normally gripping the tube and so giving the required friction. In the
latter case, in some cases, the spring may be adapted to have its gripping action
diminished by turning the tube partly round, the full gripping action being the
normal condition. In another modification, a device such as a cam, inclined plane,
or other clutch device may be brought to act on the sliding tube by means of a
lever, wheel, rod, or equivalent means, operated by the hand, by which, when
actuated, the tube would be released and capable of being moved, and then when
released, would automatically grip or hold the tube; or, vice versa.
This action, in
some cases, may also be effected by turning the sliding tube round.
The different constructions, parts or features according to this invention may be
used separately or conjointly in or in connection with telescopic pendants.
Dated this 19th day of June 1895
CHEESBROUGH & ROYSTON,
15 Water Street, Liverpool, Applicant's Patent Agents..

page_text: I, HARRY TEE, of 50 Castle Street, Liverpool, in the County of Lancaster,
Engineer, 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 has reference to pendants for gas lamps of the extendable or
telescopic type and it has for its object to provide improvements connected with
pendants of this type by which those of considerable weight may be used and
worked without the assistance of balance weights, as usually employed.
According to this invention, pendants are made of a fixed inner tube, supported
say by a ball and socket joint to the gas pipe, or connection above, and a sliding
external tube carrying the lamp or lamps, and sliding up and down on the fixed
tube, a stuffing box being provided on the upper end, by which a sliding gas-tight
joint is made with the fixed tube. As a means of holding this outer tube in the
upper position, a suitable coupling device, as of the bayonet joint type, hooks, or
other equivalent coupling, is employed on the upper end of the tubes; and the
connection may be suitably made by turning the lower and outer tube partly round
on the inner one, the upper part of the connecting device being stationary.
According to a further part of this invention, pendants of the type above
referred to are constructed and adapted to be moved up and down, and to be held
in any intermediate position without the use of counter-balance weights, by the
employment in connection with same, of a frictional device which grips or bears on
the sliding tube, or is made to bear thereon, or grip same; so that when moved to
any position, it will hold or grip automatically the tube, or be caused to grip or
hold it. One means under this improvement consists of a spring in the end of, or
connected to, the outer tube (which may be the fixed or sliding one), which bears
or grips normally on the inner tube. Or, a spring may press a gripping or
clamping device on to said tube; or, the weight and friction may cause a part or
device to press on said tube. If the spring be used, it may be of a flat type
gripping the tube, and fastened or held in a box say in the gland, when a gland is
used, round said tube, or supported externally therefrom; or, it may be of the
spiral kind, normally gripping the tube and so giving the required friction. In the
latter case, in some cases, the spring may be adapted to have its gripping action
diminished by turning the tube partly round, the full gripping action being the
normal condition. In another modification, a device such as a cam, inclined plane,
or other clutch device may be brought to act on the sliding tube by means of a
lever, wheel, rod, or equivalent means, operated by the hand, by which, when
actuated, the tube would be released and capable of being moved, and then when
released, would automatically grip or hold the tube; or, vice versa.
This action, in
some cases, may also be effected by turning the sliding tube round.
In the accompanying drawings which illustrate this invention, I shew in
Figures 1 and 2, which are sectional elevation and plan, respectively, a gas
pendant of the telescopic type according to this invention, in which the moving
tube is beld in its uppermost position by spring supports or catches.
Figure 3 is a sectional elevation, and Figure 4 a plan, shewing a pendant of this
type with a spring frictional means for holding it, the outer tube, in the uppermost
position, and in any intermediate position, automatically.
Figure 5 is a sectional elevation shewing the a modified form of spring gripping
and retaining mechanism in which the spring is of spiral form.
Figure 5 shews a modification of the spring device shewn in Figure 5. In this
case a web k is provided in the tube b and the free end of the spring f bears or rests

page_text: upon it; so that by turning the tube c round a little in pulling it up or down, the
friction of the spring is removed from b.
arranged to fit properly round the tube
therein when the tube c is turned.
The stuffing in the stuffing box, will be
and its web k, and to be free to turn
In some cases a provision, as a bar, connects the upper part of the tube b with a
fixed part of the ball joint a, such bar being so arranged and connected, that the
pendant is free to swing in the joint, but prevents the tube 6 turning, when the
tube c is turned.
Figure 6 is a section shewing another modified construction of pendant spring
gripping and retaining device.
Figure 7 is an elevation shewing a hand actuated friction gripping device for
holding the outer tube of the pendant.
In the different figures of the drawings, shewing the different modifications, the
same letters and figures of reference are used to indicate the same or like or
equivalent parts wherever they occur.
Referring to the drawings, and to Figures 1 and 2 in the first instance, the
telescopic pendant shewn is supported and carried by an ordinary spherical or cup
and ball joint a, and the telescopic portions of it consist of an inner fixed or
stationary tube b, and an outer telescopic or moving tube c, to the lower end c¹ of
which, the burner or burners and other appendages, or ornamental work, would be
fixed, and having at its upper end a stuffing box c and gland c round the tube b.
The inner tube b is provided at its lower end with a ring 6', which serves as a stop
to the outer tube when it is pulled down the full distance, the metal of the interior
of the fitting c² coming in this descent in contact with this ring b. At the top of
the tube, a rubber washer 62 is provided to form a buffer to the tube c, so as to
prevent jar to the fittings when it is pressed to the top position, this being specially
serviceable in the case of the burner being of the incandescent type as it obviates
the liability of breakage of the mantle. Above the ring at the top of the
tube b, two springs d'are fixed, the lower ends of which are provided with a
horizontal portion d' and an outwardly inclined part d' below this; while on the
upper fitting carrying the stuffing box c³, are two flanges e, which work in con-
nection with the parts d' d² of the springs d. As regards these flanges e, it will be
plain that this portion of the fitting may, in lieu of the flanges, consist of a ring
with gaps in it at opposite sides to allow of the telescopic part being drawn down
when the gaps are coincident with the springs d. This, and the other constructions
hereafter described, of pendants are very serviceable for use in connection with
pendants of the telescopic type for carrying incandescent gas light burners, and
others of considerable weight, which it is desired to lower at times, without the use
of balance weights.
In action, the normal position of the parts may be assumed to be that shewn in
the drawings, in which position the outer tube c and its appendages would be
supported by the springs d, the flanges e of the stuffing box fittings of this tube,
resting upon the horizontal portions d' of these springs. To lower the lamp in
order to light it, or attend to it any way, the outer tube carrying the burner or
burners is turned round axially until the flanges e are free of the springs d, when it
is free to slide or be pulled down. When the lamp has been lit, or the burners
attended to, the tube c is, in order to connect it with the supporting springs d,
moved up past the parts d' of the springs and then made to engage with the
springs d. This engagement may be done by lifting the tube with the flanges e in
the position shewn in dotted lines in Figure 2, or with such flanges in the position
shewn in full lines in both Figures 1 and 2. In the latter case the flanges e come
in contact with the inclined ends a² and press the springs apart; and then when
they pass the horizontal parts d', the springs will spring back into position and
receive the flanges e when upward pressure is removed from the tube c.
The arrangement illustrated in Figures 3 and 4 shews a similar pendant to that
shewn in Figures 1 and 2 as to general construction; but in this case the bolding
p of the outer tube, and the burners and fittings carried by it, is effected by a

page_text: spring, provided within a chamber in the gland c, such spring being of
C shape, having tendency to close, and normally gripping or pressing upon the
tube b. By this construction, the tube c with its appendages or attachments, will be
retained by the frictional gripping or holding action of the spring f upon the tube b
in any position that it may be moved to. The amount of friction should be such as
admits of the tube c being readily moved up and down on b, by pulling it down or
pressing it up, and at the same time sufficient to grip and hold the tube c in any
position to which it is moved, when not held by the hand. The spring f, may, if
desired, be lined internally with wood, leather, or other analogous material to
prevent a cutting or scratching action upon the surface of b.
The modification shewn in Figure 5 possesses the same general characteristics as
to action and manipulation as the arrangement set forth with reference to
Figures 3 and 4, but in lieu of the type of spring shewn in these figures, a spiral
spring is employed. One end of this spiral spring is secured in the screw cap c
of the gland c', the other end being free. The normal condition of this spring is
that of gripping the tube. b, so that the tube c and its appendages would be held by
this friction in any position to which it has been moved when left to itself, but in
moving the tube c up, or drawing it down, if such tube be given a partial rotative
movement in a direction which will tend to uncoil the spring f, or make the diameter
of such spring larger, then the friction on b will be diminished, and less power
required to move it up and down.
In Figure 6 the pendant is provided with another modified form of spring
frictional device. In this case, a flat spring f is provided in a rectangular
chamber at the opposite sides of the gland c, and a roller is fitted between such
springs and the tube b. In this case, when the tube c is pushed up, the rollers i
will move into the bottom (the largest part) of the chambers h, and little friction
will be caused and small power required to overcome or move it; but when upward
pressure is removed after having raised the tube to the position, its own weight
tends to cause it to fall, whereupon the roller i will be moved up towards the upper
part of the chamber h, into the part where the space between the springs fand the
tube is smaller, with the result that the friction of the rollers on the tube b is
increased, and the tube c automatically stopped and held.
at
The modification shewn in Figure 7 illustrates a pendant of the type herein
referred to, provided with an eccentric spring f mounted upon a spindle f* carried
on the gland c. On this spindle a double arm j is fixed, with a chain or cord
each end, and the spring is so arranged that when one end of the arm is pulled
down, will press on the tube b, and when the other is pulled it will be moved off
said tube. In action, when the tube c is to be moved up or down, the right hand
arm is pulled down, thereby moving the spring from off b; and then, having
moved the tube c to the desired position, the left hand arm is pulled down, thereby
causing the spring f to come into contact with b. The tube b will then be held in
this position by the spring.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
.
1. The improved gas pendant herein described, namely, a pendant consisting of
or comprising a stationary or fixed tube, a movable or telescopic tube, provided at
one end with a sliding gas-tight joint with the stationary or fixed tube, and means,
substantially as described, for holding or supporting said moving tube on or to the
fixed tube or stationary part of the pendant for the purposes specified.
2. The gas pendant comprising a fixed or stationary inner tube, and outer sliding
or telescopic tube, and the means of holding said outer tube in its upper position;
substantially as set forth with reference to and shewn in Figures 1 and 2 of the
drawings.
3. The gas pendant comprising a fixed or stationary inner tube, and outer sliding
or telescopic tube, aud spring device for holding said outer tube on the inner tube;

page_text: substantially as set forth with reference to and shewn in Figures 3 and 4;
Figure 5; Figure 5A; and Figure 6, of the drawings, respectively.
4. The gas pendant comprising a fixed or stationary inner tube, and outer sliding
or telescopic tube, and hand actuated gripping device on the outer tube; substantially
as set forth with reference to and shewn in Figure 7 of the drawings.
Dated this 19th day of March 1896
CHEESBROUGH & ROYSTON,
15 Water Street, Liverpool, Applicant's Patent Agents.