An Improved Stand for Chemical or other Purposes.
Year: 1891

page_text: Date of Application, 25th June, 1891
Complete Specification Left, 25th Mar., 1892-Accepted, 30th Apr., 1892
PROVISIONAL SPECIFICATION.
An Improved Stand for Chemical or other Purposes.
I ARTHUR WILLIAM ELLIS of No. 100 Englefield Road, Islington in the
County of Middlesex, Chemical Engineer, do hereby declare the nature of this
invention to be as follows:-
:-
This invention relates to the construction of telescopic retort stands or other
like stands and is an improvement upon my previous Specification No. 3187,
21st February 1891, wherein 1 described various methods of securing an outer
movable tube to the rod of an ordinary retort stand, and also the means whereby
the collars of the rings or clamps are made to take a bearing around the tube to
prevent the flattening thereof.
I find in practice that the means described in the above mentioned Specification
answer the purpose for which they were intended; but improvements are made
thereon (especially when it is desired that the rod and tube be made of the softer
metals) by adopting the methods hereinafter described.
As a modification of the means of securing the tube in position I split said tube
at its lower extremity and affix thereto a split collar or clamp, either made in one
piece or hinged, with projecting lugs provided with a thumb screw or other suitable
means of compressing the same, so that upon pressure being brought to bear upon
the said lugs the split portion of the tube is also compressed and secured to the
rod or construct this clamp in such a manner that its upper part only is affixed
to the tube and its lower part upon compression grips the rod itself.
By casting upon, or otherwise affixing to the above mentioned clamps, a socket
they can be made to receive the stem of the lower ring or other contrivance.
As an improvement upon the collars as described and illustrated in Figs. 5, 6 & 7
of the above mentioned Specification by which the rings or other contrivances are
secured to the outer tube, I employ a split collar or clamp similar to the one
hereinbefore first described, which collar or clamp may form part of the ring itself,
or be provided with a drilled hole for the reception of the stems of the rings or
other contrivances.
By the means above described of securing the tube to the rod, and the rings or
other contrivances to the tube, a more perfect grip or hold is ensured than is the
case with a collar and set screw. wish it however to be understood that do
not confine myself to the precise forms of clamps hereinbefore described, as the
principle can be applied to and take the place of the various arrangements in which
a set screw is used, described and illustrated in my said previous Specification,
or their modifications.
If desired in lieu of the clamps hereinbefore described, a socket similar to the
one illustrated in Figs. 5, 6, & 7, of my said previous Specification may be used to
secure the split tube in position, or the socket c Figs. 1 & 2 of the said Specifica-
tion may be employed for the same purpose in which case I prefer that there should
be at least two cross cuts in the tube and that the set screw bears upon the centre
of one of the four parts of the tube thus formed.
Dated this 25th day of June 1891

page_text: COMPLETE SPECIFICATION.
An Improved Stand for Chemical or other Purposes.
ARTHUR WILLIAM ELLIS formerly of 100 Englefield Road Islington, but
now of 4 Margaretta Terrace Chelsea in the County of Middlesex, Chemical
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 relates to the construction of a telescopic retort stand, or other
like stand, for use in chemical or other operations, and is an improvement upon my
former Patent No. 3187 February 21st 1891, wherein I described various methods
of securing an outer movable tube to the rod of an ordinary retort stand and also
the means whereby the sockets of the rings or clamps are made to take a bearing
around the tube to prevent the flattening thereof.
I find in practice that the means described in the Patent hereinbefore mentioned
answer the purpose for which they were intended, but improvements are made
thereon (especially when the rod and tube are made of the softer metals) by
adopting the means hereinafter described.
The object of this invention is to enable an operator, without assistance, to alter
the height and position of a set-up piece of apparatus by the aid of a single thumb
screw or its equivalent, as hereinafter described thus avoiding the inconvenience
and loss of time occasioned by the necessity (where ordinary retort stands are
used) of adjusting each ring clanıp or other support separately, which operation is
not only tedious but involves either the loosening of the connections or the risk of
damaging the apparatus.
my
With regard to the rod and tube I proceed in the manner indicated in
herein before mentioned Patent, that is to say, I affix to a stand or base, in the
ordinary manner, a rod of the desired height and substance and upon this rod I fit
an outer tube that is made to slide and turn upon said rod, and to which it is
secured by means of an outer clamp, collar, or other contrivance, hereinafter
described. Upon this outer tube the rings clamps or other supports are fitted in
the same manner as when applied to the solid rod of an ordinary retort stand.
In order that my invention may be understood I will proceed to describe the
manner it may be carried into effect reference being made to the annexed
drawings.
Figures and 2 represent a part of the solid rod A, of an ordinary retort stand
and also a portion of the outer movable tube B, split at its lower extremity by
means of saw cuts c, c, c, c, or in any other convenient manner.
Figures 3 and 4 show a clamp with projecting lugs or cheeks d, and thumb
screw e, this socket or clamp is affixed, by means of a single rivet, or in any other
suitable manner to the lower, or split portion of the tube B, and is compressed by
means of the thumb screw thus securing the tube B at any desired height.
Figures 5 and 6 show a clamp provided with a hinge, which may be fitted to
the tube B, in the same manner, and may be used for the same purpose, as the
socket illustrated in Figs. 3 and 4.
Figures 7 and 8 illustrate a form of combined socket and clamp in which the
upper portion or socket g is secured to the tube and the lower portion or clamp h,
(being of lesser diameter) is made to grip the rod itself when pressure is applied to
it by means of the thumb screw; in order to provide sufficient spring for this
purpose I partially detach said clamp from the socket by means of the saw cut i.
Figures 9 and 10 show a modification of the clamp illustrated in Figs. 3 & 4,
in this case a socket j, and extra thumb screw k, are provided, the former to
receive the stem of a ring clamp or other support and the latter to secure the
same by this arrangement the clamp may be made to serve the double purpose of
securing the tube in position (in which case I prefer that it be permanently affixed

page_text: thereto, by a rivet or other suitable means) and for the reception of the lower
ring or other support, or it may be used independently as a socket or block for
rings or other supports generally.
Figures 11, and 12, show a modification of the hinged clamp illustrated in
Figs. 5, & 6, but in this case the clamp is attached to the stein, of the ring or
other support, and is particularly adapted for use with a light tube, as its tendency
to flatten the same is reduced to a minimum.
Figures 13 and 14 represent a socket m, similar to the one described in Figs. 5,.
6 & 7, of my previous Patent No. 3187, A.D. 1891, only that in this case it is.
adapted to the purpose of securing the tube B, to the rod A, and not for the
purpose of securing the rings or other supports to the tube. To effect this object
I cut out a portion of the tube B, at n, corresponding in size and position to.
the key o, so that upon pressure being applied to it by turning the thumb, or set
screw d, the said key takes a direct bearing upon the rod A, and thus secures.
the tube in position.
Figures 15 and 16 show a socket m', similar to the one described at c Figs. 1
to 4 of the above mentioned Patent but instead of allowing the thumb or set
screw to act directly upon the rod, I cause a portion of the tube to intervene,.
that is to say, I split said tube by two or more saw cuts p, for a sufficient distance
to give the split portion, or portions, the necessary spring to enable it or them to.
grip the rod or be released therefrom as desired.
Figures 17 and 18 represent a modification of the method of securing the tube
in position, illustrated in Figs. 10 and 11, of my previous, hereinbefore mentioned
Patent, but in lieu of upsetting the tube and compressing the same by a screwed
mut, as there advocated, I split said tube at p, a sufficient distance, and insert
and affix therein by means of rivets or otherwise a short piece of tube q, which
I also split as shewn in the drawings. For the purpose of compressing this split
portion of the tube I employ a milled headed collar, having a slightly
tapering bore, which upon being turned and pressed downwards secures the tube
to the rod.
By the means hereinbefore described of securing the tube to the rod, and the
rings or other supports to the tube, a more uniform grip or hold is ensured than is
the case when the ordinary socket and thumb screw are employed, the direct action
of which is liable to produce indentations upon the rod and tube and thus interfere
with the free and smooth movement thereof.
As a further modification, and where it is desired to dispense with a thumb screw,
I employ the clamps Figs. 19, to 22, shown in this case as adapted to the purpose.
of securing the tube only, but by casting upon or otherwise affixing to this clamp,.
a socket similar to the one illustrated in Figs. 9 & 10 it may be used for the
reception of the stems of the rings or other supports for apparatus, or it may as in
Figs. 11, & 12, form part of the stem of the ring itself. As a substitute for the
thumb screw, I provide a catch or levert, which works upon the pin u, fitted to the
cheeks v, of the sockets; the shorter end w, of this catch I curve elliptically and
in such a manner that when said catch is placed or held in a horizontal position,.
contact with the rod is released as in Figs. 19 to 21, and the tube may be moved
freely, but upon being pressed downwards as in Fig. 22, sufficient pressure is
brought to bear upon the rod to secure the tube in position; to prevent the
possibility of this catch being accidentally released may fit to the cheeks of the
socket a spring that takes a bearing upon the upper part of the catch, and of
sufficient power to maintain said catch in a vertical position when not otherwise
required.
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
Firstly A retort stand, or other like stand, having in combination with the split

page_text: .
tube B Fig. 1, one or each of the sockets or clamps as hereinbefore described and
shewn in Figs. 3, 4, 5 and 6.
Secondly A retort stand, or other like stand having in combination with a
movable tube a combined socket and clamp as herein before described and shewn
in Figs. 7 and 8.
Thirdly A. retort stand, or other like stand, having in combination with an outer
movable tube, one or each of the clamps illustrated in Figs. 9, 10, 11, & 12, as and
for the purposes described.
Fourthly A retort stand, or other like stand, having in combination with the
outer movable tube B, a collar, provided with a key and key way, as and for the
purposes described and illustrated in Figs. 13 and 14.
Fifthly A retort stand, or other like stand, having in combination with the split
tube B, a collar and thumb screw as described and illustrated in Figs. 15 & 16.
Sixthly A retort stand or other like stand, having in combination with the split
tube B a collar 7, as hereinbefore described and illustrated in Figs. 17 & 18.
Seventhly A retort stand, or other like stand having the means of securing the
tube B to the rod, or the rings clamps or other supports to the same, by employing
the clamps, and substituting for the ordinary thumb screw, the catch or lever t, as
described and illustrated in Figs. 19 to 22 of the annexed drawings.
Dated this 25th day of March 1892.
ARTHUR W. ELLIS.