Improvements in Regulating Slides for Gasaliers, Hanging, Table, and Standard Lamps, and for other like uses.
Year: 1889

page_text: Date of Application, 28th Jan., 1889
Complete Specification Left, 28th Oct., 1889-Accepted, 21st Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements in Regulating Slides for Gasaliers, Hanging, Table, and
Standard Lamps, and for other like uses.
I, CHARLES HENRY ANCILL, of 12, Albert Road, Handsworth, Staffordshir>,
Patentee, do hereby declare the nature of this invention to be as follows:-
This invention has reference to the regulating slides for gasaliers, hanging table,
and standard lamps, and for other like uses such as adjustable shop window brackets
where an article is arranged to slide along a rod or tube and has to be fixed at any
required height or position on the tube or rod.
As an example I will describe my invention applied to the regulating slide of a
chandelier in which an outer tube is arranged to slide up or down upon an inner
stationary tube. Fitting loosely upon the inner tube I provide a clip by preference in
the form of a C-spring having an inclined projection or projections outside. Fixed
to or formed with the outer tube is a projection or a roller or two or more projections
or rollers acting upon the said inclines. The said outer tube is also provided with a
stop above and below the said spring clip and one or both of these stops is or are by
preference made adjustable so that the distance through which the outer tube moves
before one or other of the stops come into contact with the clip can be regulated.
When the outer tube is pulled down the said roller or projection, or rollers or
projections, thereon coming into contact with the said incline or inclines on the clip
squeeze or squeezes the clip and causes it to grip the inner tube the amount of grip
being regulated by the upper stop until it is just sufficient to sustain the weight of the
chandelier, so that by a slight extra downward pull the outer tube can be brought as
low as required and immediately it is released it will be held by the clip in that
position.
When the outer tube is pushed upwardly the projection or roller or the projections
or rollers on the outer tube are raised off the inclines on the clip and the clip
remains stationary until the lower stop on the outer tube comes into contact with the
clip when the clip and the outer tube will move up together and as soon as the outer
tube is released the weight thereof is sustained by the clip as above described.
Instead of the clip being arranged to act upon the outside of the inner tube or rod
it may be arranged to act upon the inside of the onter tubo which is accomplished by
making the clip fit insido the outer tube and providing it internally with an incline or
inclines. A projection or projections is or are provided upon the inner tube or rod to
act upon the incline or inclines and force the clip outwardly to grip the outer tube.
The said stops for regulating the amount of grip of the clip are provided upon the
inner tube.
When applying my invention to the regulating standards for lamps and for other
like purposes I sometimes employ instead of the incline above described a pair of
gripping levers in the clip which fits in the outer tube these gripping levers being
acted upon by a stop on the inner tube or rod and caused to expand the clip so as to
grip the onter tube and sustain the weight carried by the inner tube or to release the
outer tube when the tube or rod is moved upwardly.
I sometimes make the stop which regulates the amount of grip of the clip or levers
in the form of a rod or tube which extends to the top of the standard so as to facilitate
the adjustment of the same.
Dated this 25th day of January 1889

page_text: COMPLETE SPECIFICATION
Improvements in Regulating Slides for Gasaliers Hanging, Table, and
Standard Lamps, and for other like uses.
I, CHARLES HENRY ANCILL, of 12, Albert Road, Handsworth, Staffordshire,
Patentee, 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 the regulating slides for gasaliers, hanging table
and standard lamps and for other like uses such as adjustable shop window brackets
where an article is arranged to slide along a rod or tube and has to be fixed at any
required height or position on the tube or rod.
As an example I will first describe my invention as applied to the regulating slide
of a gasalier in which an outer tube is arranged to slide up or down upon an inner
stationary tube and I will refer to the accompanying sheets of drawings on which
Figs. 1 and 2 represent in sectional elevation the upper part of a gasalier with my
invention applied Fig. 1 representing the parts in the positions which they occupy
when the gasalier is being pushed upwardly and Fig. 2 showing the same parts in the
positions which they occupy when the gasalier is being pulled down or when the
weight of the same is taken upon the inner tube; Fig. 3 represents the same parts as
the preceeding figures but with the centre part in elevation. Fig. 4 is a sectional
plan of the same and Fig. 5 shows a part of the same separately. The remaining figures
illustrate modifications of my invention as hereinafter described.
Referring firstly moro particularly to Figs. 1, 2, 3, 4 and 5 in which the same
letters of reference indicate the same parts in the figures, a is the inner tube which
hangs from the ceiling and b is the outer sliding tube provided with the usual cup b¹
at the top. Fitting loosely upon the inner tube a I provide a clip c which is by
preference in the form of a C-spring as shewn more clearly by Fig. 5 having two
inclined projections c¹ c² which are wider at the bottom than at the top. The cup or
extension carries two rollers marked d¹² corresponding with the inlined pro-
jections c c. In the example shewn these rollers turn on pins e carried by a central
bracket f screwed to the cup 1 and fitting on the tube a so that the rollers d' d will
move up or down with the outer tube b. The central part 1 of the bracket f forms
a stop which comes into contact with the bottom of the clip c when the gasalier is
pushed upwardly as hereinafter described. Above the spring c is a second stop g
fitting on the tube a and screwed to the bracket so that its distance from the stop
and the distance through which the outer tube moves before the stop g or the stop f
comes into contact with the clip c can be regulated as required.
The parts above described operate as follows:-When the outer tube b is pulled
down as shewn in Fig. 2 the rollers d' d' will come into contact with the inclined
projections on the clip c and squeeze the clip and cause it to grip the inner
tube a.
The amount of grip of the clip c on the inner tube a is regulated by the
upper stop which by pressing upon the top of the clip c governs the pressure of
the rollers dd upon the inclines; as it will be evident that the stop g, if
screwed down far enough, would prevent the rollers d' d³ touching the inclines
ca
at all and if screwed upwardly would not come into contact with the clip c and
would thus cause the whole of.the weight of the gasalier to act through the rollers
upon the inclines. The amount of grip of the clip c on the inner tube a has to
be regulated by the upper stop until the grip is just sufficient to sustain the
weight of the gasalier, so that by a slight extra downward pull the outer tube b can be
brought as low as required and immediately it is released it will be held in that
position by the clip c gripping the inner tube a.
pushed upwardly (see Figs. 1 and 3) the rollers d
freeing the clip from the inner tube a and the clip
lower stop comes into contact with the bottom of
the outer tube will move up together and as soon as
When the outer tubo bis
rise off the inclines thereby
remains stationary until the
the clip when the clip and
the outer tube 6 is released

page_text: the weight thereof and of the gasalier will be sustained by the clip c clipping the
inner tube a as above described.
It will be evident that instead of employing two rollers as above described a single
roller or more than two may be used or the rollers may be altogether dispensed with
and instead thereof inwardiy projecting parts formed on the bracket to act upon the
inclines of the clip.
Instead of the clip being arranged to act upon the outside of the inner tube or rod a
it may, as illustrated for instance by Fig. 6, arranged to act upon the inside of the
onter tube which is accomplished by making the clip c fit inside the outer tube band.
providing it internally with inclined surfaces c¹ c³. A wedge like projection is
provided upon the inner tube or rod a to act upon the inclines c¹ and force the clip
outwardly to grip the outer tube b. The stops and g for regulating the amount
of grip of the clip are provided upon the inner tube a. In applying this example
of my invention to table and standard lamps in which the outer tube is stationary
and fixed to a suitable base and the inner tube or rod is arranged to slide up or down
and carry the lamp at its upper end the position of the clip c and the wedge has to
be the reverse of that shewn in Fig. 6 (see Figs. 7 and 8) so that the weight of the
lamp acting through the inner tube will force the wedge between the inclines on the
clip c and open out the clip to grip the inner tube as in the example illustrated by
Fig. 6.
Figs. 9, 10, 11, 12, 13, 14 and 15 illustrate a further modification of my inven-
tion as applied to the regulating standards for lamps and for other like purposes
where an inner tube or rod is required to be adjusted and its weight sustained
inside an outer stationary tube. Of these figures Figs. 9 and 10 illustrate in part
sectional elevation a standard lamp constructed according to this part of my inven-
tion Fig. 9 representing the parts in the positions which they occupy when the
lamp and inner tube are being raised and Fig. 10 shews the same parts in the
positions which they occupy when the weight of the lamp is taken by the clip
acting upon the inside of the outer stationary tube; Fig. 11 is a sectional side
elevation of the lower part of the lamp illustrated by Figs. 9 and 10 and Figs. 12,
13, 14 and 15 illustrate details of the same. In this example instead of employing
the inclines on the clip c as above described I use a pair of gripping levers
marked in the clip c these gripping levers crossing each other and turning
on the pin fixed to the clip. The longer arms of these gripping levers project
at the top of the clip and the shorter arms act upon the inside of the clip and
force it outwardly when the upper ends are forced apart by the inclined stop h
fixed to the lower end of the inner tube a. This stop has a lower projecting
arm which is slotted for the pin to pass througb. In this example the stop
which regulates the amount of grip of the clip or levers is in the form of a rod
marked through the lower end of which the pin passes this rod extending
upwardly to the top of the standard where it is acted upon by the cross pin fixed
to the sliding collar m this pin passing through slots in the collar n at the upper
part of the inner tube a so that it is capable of a slight up and down motion. It will
be seen by an examination of the figures that this example of my invention operates
in substantially the same manner as the examples hereinbefore described and illustrated
by the precceding figures. The inner tube a and lamp are raised by grasping the
collar m and pushing it upwardly which brings the pin l'into contact with the top of
the slots in the upper part of the tube a (see Fig. 9) and moves the tube a upwardly
withdrawing the inclined collar from between the outer ends of the levers ♬ so
that the clip c will now be free to move along the outer tube and it will be carried
upwardly by the arm. When the collar m is released the weight of the lamp acting
through the inner tube a forces the inclined collar between the outer ends of the
levers (see Fig. 10) and forces them outwardly and causes the clip e to grip the
inside of the outer tube the amount of grip being regulated by the distance through
which the inner tube a moves before the pin comes into contact with the top of the
rod k this being regulated by screwing the inner tube a either farther into or out of

page_text: the collar. at the top thereof. When the lamp. is required to be lowered the collar m
is pushed downwardly which causes the pin to act upon the rod and force the
levers farther from the inclined collar so that their outer ends can come a little
nearer together and partly release the clip c from the inner tube 6; but immediately
the collar m is released the weight of the lamp acting through the collar will force
the outer ends of the levers outwardly and cause the clips c to grip the inside
of the outer tube and sustain the lamp and the inner tube in the required position.
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
[ claim is :-
1. The improved gripping device for sustaining the outer sliding tube in any
position upon the inner stationary tube or rod of gasaliers hanging lamps and the
like, herein before described and illustrated by Figs. 1, 2, 3, 4 and 5 of the
accompanying drawings, that is to say, a gripping device for the purposes described
consisting of the spring clip c fitting upon the outside of the inner stationary tube
or rod the said clip having an external inclined surface or surfaces which when
the outer tube is not otherwise supported are acted upon by a roller or rollers or
by a projection or projections carried by the outer tube so as to bind the clip c
upon the inner tube or rod, the motion of the said outer tube relatively to the
clip e being regulated by an adjustable stop, the said roller or rollers or projection
or projections of the outer tube releasing the clip e when the outer tube is pushed
upwardly, all substantially as hereinbefore set forth and illustrated.
2. The combination and arrangement of parts constituting the improved gripping
device for sustaining the outer sliding tube in any position upon the inner stationary
tube or rod of gasaliers hanging lamps and the like, herein before described and
illustrated by Fig. 6 of the accompanying drawings, that is to say, the clip e fitting
inside the outer tube and having the inclines el e², the wedge fixed to the inner
tube or rod a and acting upon the inclines ce² when the outer tube is not otherwise
supported, and the adjustable stop g for regulating the position of the wedge h
relatively to the clip e, and the stop ¹, all arranged and operating substantially as
and for the purposes herein before set forth and illustrated.
3. The combination and arrangement of parts constituting the improved gripping
device for sustaining the weight of a standard lamp or other article and the inner
sliding tube or rod thereof in any position within the outer stationary tube or standard
of the same, hereinbefore described and illustrated by Figs. 7 and 8,of, the accom
panying drawings, that is to say, the clip e fitting inside the outer, stationary tube b
and having the inclines c¹ c², the wedge h fixed to the inner sliding tube or roda and
acting upon the inclines c¹ when the tube a is not otherwise supported, and the
adjustable stop g for regulating the position of the wedge relatively to the clip,a,
and the stationary stop f, all arranged, and operating, substantially as and for the
purposes hereinbefore set forth and illustrated.
T
4. The improved gripping device for sustaining the weight of a standard, lamp
or other article and the movable, supporting tube! thereof in any, position, within
the outer stationary tube, or standard of, the same,, and, the means for freeing the
said gripping device from, the stationary, tube or standard.when adjusting the height
of the said lamp, or other article, herein before, described, and illustrated by Figs: 9,
10,11,12, 13, 14 and 15, of the accompanying drawings, that is to say a gripping
device for, the purposes described consisting, esssentially, of spring clip carried, by
the movable, inner tubo and, fitting within the outer stationary tube, the said clip
carrying a pair of gripping levers which, when the inner tubo is not otherwise
supported, are, operated upon by contact with, the lower end of the inner tube, or
apart connected, thereto,so as to bind the said clip-in the outer tube and support,the
weight of the inner tube and parts carried thereby, the angular motion of the gripping
levers being, regulated, by an adjustable, stop or not so regulated,, the said levers
releasing the clip when the inner tube is raised from the outer tube, and the said, clip

page_text: and levers having means substantially as hereinbefore described and illustrated by
which when it is required to lower the inner tube the clip can be caused to release the
outer tube by operating a part at the top of the inner tube, all substantially as herein-
before set forth and illustrated.
Dated this 26th day of October 1889
CHARLES HENRY ANCILL.