IMPROVED MEANS FOR DIMINISHING THE VIBRATIONS OF SOUND OR NOISE CAUSED BY CURRENTS OF AIR Supplied thROUGH PASSAGES FOR THE PURPOSE OF SUSTAINING COMBUS- TION IN LAMPS."
Year: 1882

page_text: LETTERS PATENT to William John Johnston Robinson, LL.B., of the City of
Limerick, Ireland, for an Invention of "IMPROVED MEANS FOR DIMINISHING
THE VIBRATIONS OF SOUND OR NOISE CAUSED BY CURRENTS OF AIR
Supplied thROUGH PASSAGES FOR THE PURPOSE OF SUSTAINING COMBUS-
TION IN LAMPS."
PROVISIONAL SPECIFICATION left by the said William John Johnston
Robinson at the Office of the Commissioners of Patents on the 14th February
1882.
WILLIAM JOHN JOHNSTON ROBINSON, LLB, of the City of Limerick, Ireland.
"IMPROVED MEANS FOR DIMINISHING THE VIBRATIONS OF SOUND OR NOISE
CAUSED BY CURRENTS OF AIR SUPPLIED THROUGH PASSAGES FOR THE PURPOSE
OF SUSTAINING COMBUSTION IN LAMPS."
In lamps, especially those constructed for burning oils, in which air is supplied
through a passage or passages for the purpose of sustaining combustion, there
is usually a considerable vibration of sound or noise, caused by the rushing
of the current of air through the said passage or passages towards the flame. This
is the more apparent in lamps wherein mechanism is used for the purpose of
increasing the draft or current of air necessary to produce the desired combustion
in the flame of the lamp.
The object of my Invention is to diminish or obviate the inconvenience and
annoyance caused by this vibration of sound or noise; and to this end I cause the
tube or cylinder forming the passage or passages to be suitably fluted or grooved
in a spiral or horizontal manner or the fluting or grooves may be formed
vertically. By this means I find the draft or current of air in its course through
the said passage or passages is so broken up, and sent in currents diverging at
numerous angles, that the column of air or draft is caused to rush noiselessly
through said passage or passages without affecting its action on the flame of the
lamp.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William John Johnston Robinson in the Great Seal Patent Office
on the 14th June 1882.
WILLIAM JOHN JOHNSTON ROBINSON, L.L.B. of the City of Limerick, Ireland.
"IMPROVED MEANS FOR DIMINISHING THE VIBRATIONS OF SOUND OR NOISE
CAUSED BY CURRENTS OF AIR SUPPLIED THROUGH PASSAGES FOR THE PURPOSE
OF SUSTAINING COMBUSTION IN LAMPS."
In lamps, especially those constructed for burning oils, in which the air is
supplied through a passago or passages for the purpose of sustaining combustion,
there is usually a considerable vibration of sound or noise caused by the rushing
of the current of air through the said passage or passages towards the flame. This
is the more apparent in lamps wherein mechanism is used for increasing the draft
or current of air necessary to produce the desired combustion in the flame of the
lamp.
The object of my Invention is to diminish or obviate the inconvenience and
annoyance caused by this vibration of sound or noise; and to this end I cause the
tube or cylinder forming the passage or passages to be suitably fluted or grooved
in a spiral or horizontal manner. Or the fluting or grooves may be formed vertically.
By this means I find the draft or current of air in its course through the said passage
or passages is so broken up and sent in currents diverging at numerous angles that
the column of air or draft is caused to rush noiselessly through said passage or
passages without affecting its action on the flame of the lamp.
Having thus described the nature of my said Invention and the manner of
applying same in practice, I would have it understood that what I consider new
and useful and therefore claim as the Invention to be secured to me by the herein-
before in part recited Letters Patent is:
The method of diminishing or destroying the noise caused by the supply of air
through passages in lamps, by fluting or grooving the air passages of said lamps in
the manner substantially as herein described and set forth.
In witness whereof, I, the said William John Johnston Robinson, have
hereunto set my hand and seal, this Eighth day of June, in the year of our
Lord, One thousand, eight hundred and eighty-two.