Improvements in Adjustable Telescopic Standards
Year: 1888

page_text: Date of Application, 18th Apr., 1888
Complete Specification Left, 13th June, 1888
Complete Specification Accepted, 17th Aug., 1888
EDMUND TOWNSHEND of Glenlee Church Road Moseley and THOMAS HENRY
THOMPSON 20 Cambridge Crescent both in the County of Worcester, and both of the
firm of Townshend and Thompson, Brassfounders, do hereby declare the nature of this
invention to be as follows:-
"
Improvements in Adjustable Telescopic Standards" and in what manner the same
is to be performed to be particularly described and ascertained in and by the following
statement that is to say -
This Invention has for its object "Improvements in Adjustable Telescopic Standards"
for supporting any object that may be placed upon or attached to them, such as Lamps,
Music or Book Rests, seats for Music Stools, tables, banners for fire screens, shaving
glasses, spirit kettles &c. &c. The object of a Telescopic Standard is to raise or lower
any object placed upon the top of an upper tube, working inside a lower tube, which
is fixed into a foot or base. The ordinary method of fixing the upper tube at any
desired height is by means of a pinching screw which is placed in a tapped hole at top
of the lower tube of the Telescopic Standard, and when screwed up presses against the
outside of the inner tube and holds it in position. This arrangement is however
faulty, as considerable force is necessary to screw up the pinching screw, so as firmly
to hold the upper tube in position, and which, if not done renders accident liable from
the sudden descent of the upper into the lower tube.
The superiority of our invention consists in the fact that the insecure pinching screw
is dispensed with. The upper tube may be raised or lowered at pleasure by the
pressing of a conveniently placed lever handle near the top of the tube, but when the
pressure of the lever is removed the upper tube is automatically fixed and cannot be
moved till the lever is again pressed.
In order that our invention may be clearly understood and more easily carried into
practice, we have appended hereunto a sheet of drawings upon which we have
illustrated the action of our invention and from which other slight modifications may
be made without in any way departing from the principle thereof.

page_text: Figure 1, is a view of the Telescopic Standard showing the lever at rest.
Figure 2, is a view of the same with the lever in action.
Figure 3, is a plan of the three hinged grippers shown in figures 1 and 2.
On reference to Fig. 1 it will be seen that A is the upper tube working inside B
the lower tube, that C is a lever pivoted into collar at top of A, and that D is a
rod attached to said lever, having taper plug at end, which presses the three knife
edge grippers E. E. E. against inside of B and thus firmly fixes A. When the
lever C is pressed inwards as in Fig. 2 it draws up the taper plug at the end of the
rod D, and releases the pendant grippors E, E, E, which are hinged on to bottom
of A, and which falling together, allow the upper tube A to work. up or down in the
lower. Upon pressure being removed from the lever C. the spring F forces the taper
rod D again into position between the grippers E. E. E., when the upper tube A is
firmly fixed in position once more.
Dated this Savantaonth day of Annil 1999
EDMUND TOWNSHEND,
Glenlee, Church Road, Moseley, Birmingham.
THOMAS HENRY THOMPSON,
20, Cambridge Crescent, Edgbaston, Birmingham.

page_text: COMPLETE SPECIFICATION.
Improvements in Adjustable Telescopic Standards.
We, EDMUND TOWNSHEND of Glenleo Church Road Moseley and THOMAS HENRY
THOMPSON 20 Cambridge Crescent both in the County of Worcester, and both of the
firm of Townshend & Thompson, Brassfounders, 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 for its object "Improvements in Adjustable Telescopic Standards"
for supporting any object that may be placed upon or attached to them, such as Lamps,
Music or Book Rests, Seats for Music Stools, tables, banners for fire screens, shaving
glasses spirit kettles &c. &c. The object of a Telescopic Standard is to raise or lower
any object placed upon the top of an upper tube, working inside a lower tubo, which
is fixed into a foot or base. The ordinary method of fixing the upper tube at any_
desired height-is-by means of a pinching screw, which is placed in a tapped hole at
top of the lower tube of the Telescopic Standard and when screwed up presses against
the outside of the inner tube and holds it in position. This arrangement is however
faulty as considerable force is necessary to screw up the pinching screw so as firmly
to hold the upper tube in position, and which if not done renders accident liable from
the sudden descent of the upper into the lower tube.
The superiority of our invention consists in the fact that the insecure pinching screw
is dispensed with. The upper tube may be raised or lowered at pleasure by the
pressing of a conveniently placed lever handle near the top of the tube, but when the
pressure of the lever is removed the upper tube is automatically fixed and cannot be
moved till the lever is again pressed.
In order that our invention may be clearly understood and more easily carried into
practise we have appended to our provisional specification a sheet of drawings upon
which we have illustrated the action of our invention and from which other slight
modifications may be made without in any way departing from the principle thereof.
Figure 1, is a view of the Telescopic Standard showing the lever at rest.
Figure 2, is a view of the same with the lever in action..
Figure 3, is a plan of the three hinged grippers shown in figures 1 and 2.
is
On reference to Fig. 1 it will be seen that A is the upper tube working inside B
the lower tube, that is a lever pivoted into collar at top of A, and that D is a rod
attached to said lever, having taper plug at end, which presses the three knife edged
grippers E E E against inside of B and thus firmly fixes A. When the lever
pressed inwards as in Fig. 2. it draws up the taper plug at the end of the rod D, and
releases the pendant grippers E E E which are hinged on to bottom of A and which
falling together, allow the upper tube A to work up or down in the lower tube. Upon
pressure being removed from the lever C. the spring F forces the taper rod D again
into position between the grippers E E E when the upper tube A is firmly fixed in
position once more.

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is.
The Improvements in Adjustable Telescopic Standards herein set forth and
illustrated by the accompanying drawings, that is to say of a rod with taper plug end
attached to a lever pivoted into collar at top of upper tube by which the rod is raised,
of a spring inside of upper tube to press the rod down when lever is released, of knife
edged grippers hinged at bottom of upper tube which are wedged against inside of
lower tube when rod is in its normal position and which fall together and cease to act
as wedges when the taper ended rod is raised and thus allowing the upper tube to be
raised or lowered inside the lower tube of the Telescopic Standard to any desired
height.
Dated this 12th day of June 1888.
EDMUND TOWNSHEND,
Glenlee, Church Road, Moseley, Birmingham.
THOMAS HENRY THOMPSON,
20, Cambridge Crescent, Edgbaston, Birmingham.