Improvements in Pillar Extension Stands for Lamps and other Analogous Purposes.
Year: 1888

page_text: Date of Application, 27th July, 1388
Complete Specification Left, 17th Apr.. 1389
Complete Specification Accepted, 25th May. 1889
PROVISIONAL SPECIFICATION.
Improvements in Pillar Extension Stands for Lamps and other
Analogous Purposes.
Wе THOMAS NORTON, of 90 Summer Hill, Birmingham, Machinist, and FRANCIS
ROBERT BAKEB, of Snow Hill, Birmingham, Engineer, both in the County of Warwick
do hereby declare the nature of this invention to be as follows:-
This invention relates to the construction and arrangement of extension pillar stands
for lamps, or other similar purposes, and has for its object. an arrangement of
mechanism, whereby the upper or extensible part may be locked or retained at any
given height, or, such position changed at will, in a ready & simple manner.
In our invention, the lower part of the pillar is of a tubular form to receive the
upper, or extensible, tube, upon which (latter) is carrie: the lamp &c. This upper
tube slides within the lower tube, having at its lower end a piston block, fitted with
the locking device hereinafter described.
At the upper end of the lower tube, a cork slide is provided, to prevent the too
sudden raising or lowering of the upper part, by reason of the friction thus
generated.
Two vertical rectangular wedge shaped sliding blocks, are made to work in corre
sponding slots or openings in the piston block, the wedge part of their form being
upon their innerside, that is, diametrically opposite to each other, and tapering towards
each other, either in an (optional) upward or downward direction.
Again. Suspended by a central rod, and lying between such two wedge blocks, is
a vertical double sided wedge, (or if preferred a single sided wedge, when only one
block is used).
This suspending rod is carried upwards to within a short distance of the top of the
extensible tube, its upper end being screwed with a quick thread working in a screw
nut.
A projection or projections extend from this nut through slots or openings in the
upper tube to its exterior, and there connected to a ring or other suitable handle.

page_text: Hence, generally speaking its action would be somewhat thus: Upon grasping the
ring and turning it round, the central rod is raised or lowered, and thereby raises or
lowers the suspended wedge, thus liberating or fixing the piston in any part of the
lower tube, and with it of course, the upper tube.
A feather key or keyway may be provided in connection with the upper tube, or
such upper tube may be of a square, or other non circular form: if preferred, to
prevent rotation when being manipulated.
In this arrangement the function of the locking device being to hold it in any
given position, and not to control it during the sliding motion.
Dated this 26th day of July 1888
CHARLES T. POWELL,
Applicants' Agent.

page_text: Analogous Purposes.
We THOMAS NORTON, of 90 Summer Hill, Birmingham, Machinist, and FRANOIS
ROBERT BAKER, of Snow Hill, Birmingham, Engineer, both in the county of Warwick,
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 and arrangement of extension pillar
stands for lamps or other similar purposes, and has for its object an arrangement of
mechanism whereby the upper or extensible part may be locked or retained at any
given height, or such position changed at will, in a ready and simple manner.
In our invention the lower part of the pillar is of a tubular form to receive the
upper or extensible tube, upon which (latter) is carried the lamp &c. This upper tube
slides within the lower tube, having at its lower end a piston block, fitted with the
locking device hereinafter described.
At the upper end of the lower tube a cork slide is provided, to prevent the too
sudden raising or lowering of the upper part, by reason of the friction thus
generated.
T'wo vertical rectangular wedge shaped sliding blocks, are made to work in
corresponding slots or openings in the piston block, the wedge part of their form being
upon their innerside, that is, diametrically opposite to each other and tapering towards
each other (either in an optional upward or downward direction).
Again. Suspended by a central rod, and lying between such two wedge blocks, is
a vertical double sided wedge, (or if preferred a single sided wedge when only one
block is used).
"
This suspending rod is carried upwards to within a short distance of the top of the
extensible tube, its upper end being screwed with a quick thread, working in a screw
nut.
A projection or projections extend from this nut through slots or openings in the
upper tube to its exterior, and there connected to a ring or other suitable handle.
Hence, generally speaking, its action would be somewhat thus:-Upon grasping
the ring and turning it round, the central rod is raised or lowered, and thereby raises
or lowers the suspended wedge, thus liberating or fixing the piston in any part of the
lower tube, and with it of course the upper tube.
A feather key or keyway may be provided in connection with the upper tube, or
such upper tube may be of a square or other non-circular form if preferred, to prevent
rotation when being manipulated.
In this arrangement, the function of the locking device being, to hold it in any
given position, and not to control it during the sliding motion.
We will now proceed to more particularly describe this our invention, having
reference to the accompanying illustrative sheet of drawings, upon which are figures

page_text: same thing or part.
Fig. 1, illustrates in sectional elevation the arrangement and parts of this our
invention.
Fig. 2, is a sectional plan upon line A-B, (Fig. 1).
Fig. 3, is a sectional plan upon line C-D (Fig. 1).
Fig. 4, is a sectional plan upon line E-F, (Fig. 1).
Fig. 5, is a detached front and side view of the lower end of the double sided
vertical wedge.
Fig. 6, is a detached front and side view of the vertical rectangular wedge shaped
sliding blocks.
Fig. 7, is a detached elevation of the piston block, shewing slots &c. to receive one
of the vertical rectangular wedge shaped blocks.
Fig. 8, is a sectional view of the piston block, (Fig. 7).
Fig. 9, is a sectional view of the piston block, (at right angles to view Fig. 8).
Fig. 10, is a sectional plan on line CH, (Fig. 7).
Fig. 11, is a sectional plan on line I-J, (Fig. 8).
Fig. 12, shows in sectional elevation a modification in which the vertical rectangular
wedge shaped sliding blocks, are operated upon by a rounded collar, and the upper
manipulating part adapted to suit.
Fig. 13, is a sectional plan of the modified manipulating ring &e., upon line K-L,
(Fig. 12).
Fig. 14, is a detached view in elevation of the modified operating rounded collar.
Fig. 15, illustrates in general elevation, the kind of lamp kuown as extension floor
lamps, to which this our invention is applicable.
a, is the lower part of the pillar, which is of a tubular form to receive the telescopic
extensible tube b, and the various parts forming the locking device. At the lower
end of the tube b, is formed a piston block c, having two vertical slots d, d, and
holes e, e.
Into these slots are fitted the sliding blocks f, f, upon which are formed pins g, g,
to take into the said holes e, e, and further provided upon their front face with
notched teeth at h.
Upon their innerside at i, the blocks are bevilled, so that when the two said blocks
are in position (see Figs. 1 & 12), such bevilled portions are diametrically opposite to,
or facing each other.
j, is a vertical double sided wedge, carried upon the lower end of the suspending
rod k, its two bevilled parts at 1, 1, acting upon the counter parts i, i, of the sliding
blocks ff.
Again. This rod k, is carried upwards to within a short distance of the top of the
extensible tube b, its upper end being screwed with a quick screw thread, and working
in the screw nut m.
n,
is a clutch-ring or handle, which is rigidly connected to the nut m, by means of
the screw pins o, o, working in horizontal slots p, p, in the tube b. Thus the said nut
is capable of a limited rotating motion around the screw rod k, by means of the
* ring n.
At the upper end of the lower tube a, a cork slide 9, is provided to prevent the too
sudden raising or lowering of the tube b.
keyway formed
In order to prevent the rotation of the tube b, when the ring.n, is turned around,
we provide thereon a feather key r, (see Fig. 4) which takes into a
in the piece 8, or other suitable place upon the lower tube a.
Also in order to preserve the correct working position of the parts 1, 1, upon the
wedge, with the bevilled parts i i, upon the sliding blocks f, f, a portion of the
rod, is made square (see section Fig. 2) to pass through square hole t, (see
Figs. 8, 9, 10).
Thus its action will now be readily understood to be as follows:-Upon grasping
the ring n, and turning it round, the central rod k, is raised, and thereby also the
bevilled portions 1, 1; which in so doing force outwards the sliding blocks f, ƒ, whose

page_text: teeth at h, take into the tube a, and retain the whole in that position. Upon again
turning the ring n, in the opposite direction, the wedge j, is released therefrom, when
the said blocks f, f, are powerless to hold, and the tube b, with the lamp &c. u, may
be raised or lowered at will.
As before intimated Figs. 12, 13, & 14, illustrate certain modifications in this our
invention, in which the part acting upon the inner bevilled portion of the blocks f,f,
is forined by an adjustable circular collar v, and lock nut wo, the lower end of the
rod k¹, being screwed for this purpose.
At the upper end of this modified arrangement, the nut m', is fixed within the
tube b', and the ring n', is connected direct to the rod k¹, by means of the screw
pin o', which latter travels around a limited distance in the slot p¹.
Thus upon rotating the ring n', the rod k², will rise or fall, and the part v, act upon
the blocks f,f, similarly as before described, and with the same result.
Having now particularly described and ascertained the nature of this our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1st. The combination and arrangement of the sliding blocks f, f, piston block c,
having slots d, d, and holes e, e, to receive the said sliding blocks, with the operating
rod k, having double wedge surfaces 1, 1, constructed and operating substantially as
described and illustrated in Figs. 1 to 11 inclusive, and for the purpose specified.
2nd. The modification of the combination and arrangement of the sliding blocks f,f,
piston block c, having slots d, d, and holes e, e, to receive the said sliding blocks, with
the operating rod k', having the collar, constructed and operating substantially as
described and illustrated in Figs. 6 to 14, inclusive, and for the purposes specified.
3rd. The general combination and arrangement of the sliding blocks f, f, double
sided wedge j, piston block c, with the screwed rod k, taking into the rotating nut m,
and operated by ring n, substantially as described and illustrated in Figs. 1 to 11
inclusive, and for the purposes set forth.
4th. The modification described and illustrated in Figs. 6 to 14, inclusive, that is to
the combination of the collar v, and screwed rod A, taking into the fixed nut m³,
and operated by the ring n', substantially as set forth.
say,
Dated this 13th day of April 1889
FRANCIS ROBERT BAKER.
THOMAS NORTON.