A Device for Securing Telescopic Standards such as used for Lamps and other Purposes at any Required Height.
Year: 1889

page_text: Date of Application, 2nd Apr., 1889
Complete Specification Left, 1st Jan., 1890-Accepted, 8th Feb., 1890
PROVISIONAL SPECIFICATION.
A Device for Securing Telescopic Standards such as used for Lamps
and other Purposes at any Required Height.
I ALFRED GEORGE HAMILTON, of The Quintin Matsys Forge, 14 Griffin Street,
York Road, London, S.E., Mechanical Engineer, do hereby declare the nature of this
invention to be as follows:
My invention consists of a collar or nut at that point of the standard where the
rod enters the tube in the ordinary way. This collar is formed as follows: The
interior of its lower part is tapped to screw on to the tube; Above the line where
tapping ends, the interior is cone-shaped, and again, above this it is further extended
in a parallel opening, of same diameter as the rod which is intended to pass through
it; Within the cone-shaped portion is placed a piece of tube, split or cut in three or
more places nearly through its length, which is rather longer than the cone-shaped
portion of collar; This split tube approximates or is of same diameter as the tube
which forms the outer portion of telescopic standard, so that when the collar is
screwed upon the latter, the split tube rests upon it with the split portion farthest
from top of tube.
The mode of use is as follows:-The rod is passed through the collar, and with it
the split tube, the collar being loosely screwed upon the tube. In order to fix the
rod at any required position it is only necessary to tighten the collar by means of its
screw; this causes the cone-shaped portion to tightly grip and close the split tube
upon the rod. The outside of collar is milled or roughened in order to present a
suitable surface to grip same.
Dated this 2nd day of Anril 1880
A. G. PRITCHARD,
Agent for Applicant.
COMPLETE SPECIFICATION.
A Device for Securing Telescopic Standards such as used for Lamps
and other Purposes at any Required Height.
1, ALFRED GEORGE HAMILTON, The Quintin Matsys Forge, 14 Griffin Street, York
Road, London, S.E., Mechanical 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 :-
My invention consists of a collar or nut, a sectional view of which is shown at Fig. 1
in the accompanying drawings, placed at that point of the standard Fig. 2, where
the rod, Fig. 3, enters the tube in the ordinary way. This collar is formed as
follows: The interior of its lower part is tapped (A) to screw on the tube or standard
Fig. 2; Above the line where tapping ends the interior is cone-shaped (B) and
above this the hole is further extended in a parallel opening (C) of a diameter nearly
the same as the rod Fig. 3, which passes through it. Within the cone-shaped portion
is placed a piece of tube Fig. 4, split or cut in two, three, or more places nearly
through its length, which is rather longer than the cone-shaped portion of collar.
This split tube approximates or is of same diameter as the tube Fig. 2 which forms
the outer portion of the telescopic standard, so that when the collar is screwed upon
the standard the split tube within the collar rests upon the standard with the split
portion upwards. In some cases I use a piece of tube cut through its entire length
as at Fig. 5, in place of the split tube Fig. 4. The method of use is as follows:-The
rod Fig. 3, is passed through the collar Fig. 1., and with it the tube Figs. 4, or 5. ;
The collar being loosely screwed upon the tube-standard Fig. 2; In order to fix the

page_text: rod Fig. 3, at any required position, it is only necessary to tighten the collar Fig. 1,
by means of its screw A: This causes the cone-shaped portion B to tightly grip and
close the split or open portions of the tube Figs. 4 or 5, upon the rod fig. 3. The
outside of the collar is milled or otherwise roughened at D, Fig. 6, when required, in
order to present a suitable surface to grip same.
.. 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. A device for securing telescopic standards, such as are used for Lamps and
other purposes, at any required height, made substantially as described.
2. A fastener comprising a collar or nut having its interior shaped as hereinbefore
described.
3. A piece of tube split or cut nearly through its length at two or more points, and
placed within the coneshaped portion of the above named collar.
4. A piece of tube cut completely through its length, substituted for the former
tube cut nearly through its length.
Dated this 31st day of December 1889.
A. G. PRITCHARD,
Agent for Applicant.