IMPROVEMENTS IN PRODUCING PARALLEL MOTION TO THE PISTON RODS OF PUMPS FOR LAMPS AND OTHER PURPOSES, WHICH IMPROVEMENTS ARE ALSO APPLICABLE TO MACHINERY IN GENERAL WHERE PARALLEL MOTION IS REQUIRED
Year: 1837

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
BRADSHAW WHITFIELD, of New Street Square, in the County of Middlesex,
Lamp Manufacturer, send greeting.
WHEREAS His late most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at.
Westminster, the Fourth day of March, in the seventh year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said
Thomas Bradshaw Whitfield, His especial licence, full power, sole privilege
and authority, that I, the said Thomas Bradshaw Whitfield, my exors, admors,
and assigns, or such others as I, the said Thomas Bradshaw Whitfield, my
exors, adiñors, or assigns, should at any time agree with, and no others, from
time to time and at all times during the term of years therein expressed, should
and lawfully might make, use, exercise, and vend, within England, Wales,.
and the Town of Berwick-upon-Tweed, my Invention of "IMPROVEMENTS IN
PRODUCING PARALLEL MOTION TO THE PISTON RODS OF PUMPS FOR LAMPS AND OTHER
PURPOSES, WHICH IMPROVEMENTS ARE ALSO APPLICABLE TO MACHINERY IN GENERAL
WHERE PARALLEL MOTION IS REQUIRED;" in which said Letters Patent is con-
tained a proviso that I, the said Thomas Bradshaw Whitfield, shall cause
a particular description of the nature of my said Invention, and in wha
manner the same is to be performed, to be inrolled in His said Majesty's
High Court of Chancery within six calendar months next and immediately
after the date of the said in part recited Letters Patent, as in and by the
same, reference being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Bradshaw Whitfield, do hereby declare the nature of my Invention,
and the manner in which the same is to be performed, are fully described

page_text: and ascertained in and by the following statement thereof, reference being
had to the Drawings hereunto annexed, and to the figures and letters marked
thereon, that is to say :-
My Invention consists, first, in combining and mode of applying certain
apparatus, as hereafter described, for obtaining a parallel movement of the
piston rods of pumps of lamps; secondly, in the application of a like combi-
nation to pumps in general; and, thirdly, in a like combination of parts
applicable to machinery where a parallel motion is desired to be obtained from
a rotary movement to a bar or such like part of machinery.
DESCRIPTION OF THE DRAWING.
Figure 1 represents a table lamp in section, having my improvements
applied thereto; Figure 2 shews another view, partly in section, of the lamp
taken at the opposite side to Figure 1; Figure 3 shews a plan of the works
for giving motion to the piston of the pump; Figure 4 is a view in elevation
of the lamp. In each of these Figures the same letters indicate similar parts..
The pump of the lamp is worked by means of a spring, similar to those used
in clocks and watches, which gives motion to a train of wheels, as will be
clearly traced in the Drawing, there being vanes a, a, to regulate the speed.
of the motion of the train, as is well understood; and thus far there is no
claim of novelty. b, b, are two toothed wheels gearing into each other, and
of equal diameters, they consequently move at the same speed; they receive
motion from the train of wheels by means of the pinion c, as is clearly shewn
in the Drawing. d, d, are two pins affixed on the wheels b, b, equidistant
from their centres; on to these are placed friction rollers in order to make
the motion as easy and smooth as possible. e is a slotted bar in which the
pins d, d, work; hence it will be evident that as the wheels b, b, revolve, the
bar e will move parallel to itself, and the piston rod f being affixed to the bar e,
that rod will at all times be caused to move up and down in a right line, and
parallel to the cylinder g, g, of the pump, as is clearly shewn in the Drawing.
The pump barrel of cylinder g, g, is placed within a vessel h, h, which is placed
within the stem of the lamp; i is a tube to supply the burner, connected with
the top of the vessel h, h, and descends some distance into that vessel to
obtain a space above the fluid in the vessel h, h, in order that there be a
quantity of atmospheric air in such space to act as an ordinary air vessel for
equalizing the discharge of the oil or other fluid to the burner. j, j, are two
induction valves to the vessel h, h; and k, k, are two eduction valves to that
vessel. The induction ways of the valves j, j, opening into the stem of the
lamp, into which the oil or other fluid is supplied through the opening above,
and the eduction ways to the valves k, k, open into the upper chamber of the
may

page_text: vessel h, h, consequently to the tube i, as is clearly shewn in the Drawing; and
the vessel h, h, is divided into two parts or chambers by a vertical partition
by which the valves will work correctly.
In the event of the pump forcing
up more oil than is consumed, which is desirable should slightly be the case,
the overflow will run down into the stem through the openings at the point
where the lamp is supplied with fresh oil or other suitable material..
Having thus described the mode of applying my improvements to pumps
for lamps, I would remark that I lay no claim to any of the parts separately
nor in combination, other than is herein-after particularly pointed out, nor do
I confine myself to the arrangement of the lamp and mode of actuating the
pump shewn in the Drawing, as variations may be made. From the foregoing
description, aided by the Drawing, it will be evident that in place of having
the pump barrel g and the vessel h within the stem of a lamp, they may be
in connection with a well or other reservoir of water or other fluid, and the
same may have my improvements applied thereto, that is to say, the combined
parts b, b, d, d, and e, for obtaining a parallel movement of the piston rod
within the cylinder g; thus may a pump, having my improvements applied
thereto, be applied to general purpose of pumping, and in place of having the
same actuated through the intervention of a train of wheel work, as shewn,
motion may be communicated to the pinion c by a winch handle, or a winch
handle may be applied direct to one of the axes of the wheels b, or motion
may be communicated by a strap or other means. And further, in applying
my improvements to the purposes of machinery, it will only be necessary to
remark, that in such cases where a bar similar to e is required to move in a
parallel direction, whether simply or having parts attached thereto similar to
the piston rods of pumps as above described, the same will readily be applied,
depending on the circumstances of the case, aided by the above description, to
the
purpose required.
What I claim as my Invention is,----
First, the mode herein described of obtaining a parallel motion to the piston
rods of pumps of lamps by means of the parts b, b, d, d, and e.
Secondly, the mode of obtaining a parallel motion to the piston rods of
pumps for raising and forcing of water and other fluids, as above described.
Thirdly, I claim the combining of the parts b, b, d, d, and e, in order to
obtain parallel motion to parts of machinery, as above described.
In witness whereof I, the said Thomas Bradshaw Whitfield, have here-
unto set my hand and seal, this Fourth day of September, in the year
of our Lord One thousand eight hundred and thirty-seven.
.
T. B. (L.s.) WHITFIELD.

page_text: AND BE IT REMEMBERED, that on the Fourth day of September, in
the year of our Lord 1837, the aforesaid Thomas Bradshaw Whitfield came
before our said Lady the Queen in. Her Chancery, and acknowledged the
Specification aforesaid, and all and every thing therein contained and specified,
in form above written. And also the Specification aforesaid was stamped
according to the tenor of the Statute made for that purpose.
Inrolled the Fourth day of September, in the year of our Lord One
thousand eight hundred and thirty-seven.