An Improved Locking Arrangement for Telescopic Tubular Standards.
Year: 1889

page_text: Date of Application, 10th Jan., 1889
Complete Specification Left, 10th Oct., 1889-Accepted, 30th Nov., 1889
PROVISIONAL SPECIFICATION.
An Improved Locking Arrangement for Telescopic Tubular
Standards.
I, FREDERICK HERBERT SANDERSON, of 48, Bridge Street, Cambridge, in the
county of Cambridge, Cabinet maker, do hereby declare the nature of this invention
to be as follows :-
:-
My invention relates to an improved locking arrangement for telescopic tubular
standards, which arrangement is especially applicable to the standards of bed tables,
reading stands and the like.
According to my invention the inner tube which is adapted to slide within the
outer tube contains a rod through the medium of which the locking of the tubes
relatively to each other is effected. At its lower end this rod carries a clamping
piece and at its upper end a handle or lever so that when the said handle is operated
to rotate the rod the clamping piece will be pressed against the outer tube to lock
the inner tube.
בזי
+
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Locking Arrangement for Telescopic Tubular
Standards.
FREDERICK HERBERT SANDERSON, of 48 Bridge Street Cambridge, in the county
of Cambridge, Cabinet Maker, 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:-
39
My invention relates to an "Improved locking arrangement for Telescopic tubular
Standards for supporting any object that may be placed upon or attached to them,
such as Bed Tables, Reading or music Stands, Seats for music Stools, Lamps Fire
Screens, Spirit Kettles Shaving Glasses &c., &c.
The object of a locking arrangement for telescopic tubes is to secure an inner
fube at any desired height within an outer tube the inner tube to support any object
placed upon it.
The ordinary method of fixing the inner tube any desired height is by means of
a set screw which is placed in a tupped hole at top of outer tube, which presses
against the outside of inner tube and holds it in position.
This arrangement is however very faulty as considerable force is necessary to
tighten the screw so as to firmly hold the inner tube in position, and the constant
force applied to the set screw soon strips off its thread and renders accident liable
from the sudden descent of the inner tube caused through the set screw not pressing
with sufficient force upon the inner tube.
The advantage or my invention consists in the fact that the insecure set screw
is dispensed with. The inner tube may be raised or lowered at pleasure and
instantly secured by simply turning to the right or left a conveniently placed handle
or lever at the top of the inner tube so that it will support a great weight.
My invention is also superior to the arrangement herein-before described inasmuch
that the locking of the tubes is effected inside instead of outside the tube, thus
ornamental tubes may be used without their surface being defaced.

page_text: According to my invention the inner tube which is adapted to slide within the
outer tube contains a rod through the medium of which the locking of the tubes
relatively to each other is effected. To the upper end of this rod a handle or lever
is secured, and at its lower end a clamping piece. The lower end of the inner tube is
plugged to fit inside of outer tube. A hole displaced from the centre of said plug
through which the rod carrying the clamping piece passes causing it to work eccen-
trically so that when the said handle or lever is operated to rotate the rod the
clamping piece will move outwards and wedge itself against inside of outer tube
and lock the inner tube, a slight pressure only upon the lever being necessary to make
it very secure.
In a modification of my invention the object supported upon the inner tube may be
connected with the rod, making the said object the medium by which the rod is caused
to rotate, in which case the handle or lever may be dispensed with.
In order that my invention may be clearly understood and more casily carried into
practice, I have appended a sheet of drawings which will illustrate the working of
iny invention and from which other slight modifications may be made without in any
way departing from the principle thereof.
Fig. 1, is an elevation of "improved locking arrangement," as applied to a telescopic
Reading Desk Arm.
Fig. 2, is a plan of fig. 1 showing how the lever causes the clamping piece to wedge
itself against the outer tube and lock the inner tube.
On reference to fig. 1 it will be seen that A is the inner tube, that C is a rod
carrying clamping piece D at its lower end. The bottom of the rod C passes through
a hole in plug G which hole is made a little out of the centre. E is the lever fixed to
top of C, when E is in position shown in Fig. 2, the clamping piece D is under cover
which allows A to slide freely up and down B, and upon turning the lever E in the
direction of the arrow the clamping piece D is moved outwards and bites upon the
inside of B. F is a reading arm upon A, H is a stop at bottom of G to prevent C
falling through.
.
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
An "improved locking arrangement for telescopic tubular standards" herein set
forth and illustrated by the accompanying drawings, that is to say 1st of a rod running
through inner tube of standard-2nd of the said rod passing through plug at bottom
of inner tube, hole in which is displaced from centre, 3rd of a clamping piece at lower
end of rod, 4th of a lever attached to top of said rod the movement of which from
left to right causes the clamping piece to move outwards towards the inside of the
outer tube and by a slight pressure upon the lever the inner and outer tube is securely
locked.
Dated this 9th day of October 1889.
FREDERICK HERBERT SANDERSON,
48, Bridge Street, Cambridge.

page_text: Date of Application, 10th Jan., 1889
Complete Specification Left, 10th Oct., 1889-Accepted. 23rd Nov.. 1889
PROVISIONAL SPECIFICATION.
An Improved Combined Reading Desk and Table.
I, FREDERICK HERBERT SANDERSON, of 48, Bridge Street, Cambridge, in the
County of Cambridge, Cabinetmaker, do hereby declare the nature of this invention
to be as follows:-
My invention relates to a combined reading desk and table, and comprises the
improvements hereinafter referred to.
The reading desk is mounted upon a telescopic tubular standard so that it can
be adjusted to any desired position. The locking is preferably effected by means
of the locking arrangement described in the specification of an application of even
date herewith, No. 490.
When a lamp or candle is applied to my improved stand the holder for the same is
carried upon an arm pivotted to the free end of the desk supporting arm, so that
the said lamp or candle may be moved to cause its light to illuminate the desk in
any position of the latter.
The table is carried upon the upper end of the standard so that it can rotate
thereon so that the table can be turned to any desired position. The said table is
mounted eccentrically upon the standard or tube whereby more available space is
afforded thereon than when mounted at the centre.
Dated the 18th day of February 1889.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Combined Reading Desk and Table.
FREDERICK HERBEPT SANDERSON of 48, Bridge Street Cambridge, in the County
of Cambridge Cabinet Maker do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer -
tained in and by the following statement :-
Combined Reading Desk and Table" and comprises
My invention relates to a
improvements hereinafter referred to.
My combination is designed for the use of Invalids and Students and consists 1st of
a Table, 2nd of a Reading Desk, 3rd of a Lamp arm, each of which will move in any
possible direction without moving the stand or base upon which they are mounted.
The Table in my combination is mounted upon the stand or base eccentrically,
working upon suitable bearings so that it will rotate upon the said stand. By this
means more available space is afforded to the Table, than when the same is mounted
concentrically with the telescopic tube rising from the centre. The Table revolving
upon the stand or base in the manner herein described allows the said Table to be
drawn over a Chair, Couch, or Bed, without moving the stand.
The arm which supports the Desk or Book-board is mounted upon the top of a
telescopic tube which rises upon the same stand or base which carries the Table before
referred to, which is allowed to revolve upon the said telescopic tube so that it way
be turned to any desired position.
The said arm can however be set at any point by a knob pressing upon it, which
knob is screwed to a rod passing through the arm supporting tube hereinafter referred
to in connection with the telescopic locking arrangement.
The telescopic tube supporting the Desk Arm, the locking of which at any desired
height is preferably effected by means of the locking arrangement described in a
complete specification of even date herewith No. 490.

page_text: When a Lamp or Candle is applied to my combination' the holder for the same is
carried upon an arm pivotted to the free end of the desk supporting arm. The Lamp
Arm, and Desk or Book-board both working upon the same centre which allows the
said Lamp Arm to be moved so that the light from the Lamp or candle supported by
it will illuminate the Desk in any position of the latter. |
In this arrangement I do away with many complicated parts hitherto used to attain
the same object.
The Reading Desk or Book-board besides being pivotted so that it will revolve
upon the arm supporting it, may be tilted from vertical to horizontal and is secured
in any position automaticly. This is effected by a ratchet, the said ratchet being
affixed to back of Desk which works in a suitable box, to which is pivotted a catch,
when the Desk is raised from a vertical position and released the catch falls of its
own weight into the teeth of the ratchet and secures the Desk at the angle in
which it was placed, the weight of the finger upon the tail end of the said catch
releases the same from teeth of ratchet and allows the desk again to be brought
upright. A further adjustment is also given to the Desk by a quadrant action
which allows the Desk to slope sideways so that a book resting upon the Desk
may be brought in a line with the eyes when a person is lying upon their side to
read, thus avoiding all danger of straining the sight.
In order that my invention may be clearly understood and more easily carried
into practice, I have appended a sheet of Drawings which will illustrate the working
of my invention and from which other slight modifications may be made without
in any way departing from the principle thereof.
Fig. 1, is a side elevation showing the "combined reading desk and Table"
complete.
Fig. 2, showes the Desk tilted sideways by the quadrant M.
On referrence to fig. 1, it will be seen that A, is the stand or base, B, the Table
mounted eccentrically upon bearings C. C. D is the telescopic tube supporting E,
which revolves upon D, I is the Desk or Bookboard, F, the box pivotted at the free
end of E. G the ratchet attached to back of Desk. H the catch which drops into
teeth of G. M. the quadrant allowing the desk to slope either way as illustrated by
doted lines in fig. 2. J, the Lamp or Candle Arm pivotted at free end of E upon the
lower part of F. K showes a candle lamp supported, in socket L which is pivotted
at free end of J.
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
<<
The improvements in a combination Reading Desk and Table," herein set forth
and illustrated by the accompanying drawings. That is to say 1st of a Table revolveing
eccentrically upon a stand or base, 2nd of a Desk Arm, mounted upon a telescopic
tube rising from the stand or base, the said telescopic tube, being secured at any
height by means of locking arrangement described in complete specification of even
date No. 490 3rd of a Lamp Arm pivotted at the free end of the said Desk Arm,
4th of a Desk or Bookboard tilted from vertical to horizontal by means of a ratchet
action, and sloped sideways by means of a quadrant. 5th of a Lamp Arm, and Desk
or Bookboard working upon the same centre so that wherever the Desk may be
placed, the light from either Lamp or Candle supported upon said Lamp Arm may be
turned so that the light may be brought to bear upon the desk.
Dated this Ninth day of October 1889.
FREDERICK HERBERT SANDERSON,
48, Bridge Street, Cambridge.