Improvements in Revolving or Intermitting Lamps in which Motion is Produced by Heated Air Rotating a Fan or Fans.
Year: 1885

page_text: Improvements in Revolving or Intermitting Lamps in which
Motion is Produced by Heated Air Rotating a Fan or Fans..
I JAMES ROOTS of 144 Bishopsgate Without London EC. Medical Assistant
do hereby declare the nature of my invention for IMPROVEMENTS IN REVOLVING
OR INTERMITTING LAMPS IN WHICH MOTION IS PRODUCED BY HEATED AIR ROTATING
A FAN OB FANS to be as follows:-
This invention consists of improvements in or further developments of, the
invention for which Letters Patent have been granted to me, dated April 1st 1884
and numbered 5761. I divide the interior of a lamp or globe by means of an
opaque plate having a slit or hole of such dimensions that it shall just permit the
revolution of a bracket or arm carrying the light and attached or geared to the same
pivot or axis as the fan. Thus when the fan revolves the bracket or arm passes
from one side to the other alternately of the plate producing intermitting light.
The light itself may be stationary and an arm or rod attached to the fan axis or
pivot strikes the cock or tap of the supply: the supply is thus alternately increased
and decreased and the light made intermitting, or a small crank or eccentric
attached to the fan pivot, may in the same way increase and decrease the light by
acting on the cock or supply regulator.
Hitherto in revolving lamps the fan has been constructed to revolve upon a
point at the bottom of the pivot, and within a loose hole bearing placed bencath
the fan, I by placing the upper bearing above the fan and constructing the pivot
to revolve upon two steel hardened points, obtain a great advantage both as regards
friction and steadiness, and am enabled thereby to revolve much heavier lamps as
in shop front lamps.
Where the axis or fan pivot is perpendicular, I attach the globe or glass to
the fan pivot in the following manner, a projecting rim is made at the top of the
globe, glass, frame, or screen, which is fitted into two or three crooks or clutches
the third or fourth crook or clutch is formed by a screw, and is thus adjustable
and the globe easily removable. The said two or three crooks or clutches may be
cast in one piece with their radial arms, which may be attached or cast with the
fan pivot or axis, or the crooks or clutches may be attached directly to the periphery
of the fan,

page_text: A triangular tubular chamber whose inner surface is reflecting is placed before
the lamp described in my before mentioned letters patent 5761-84, the sides
of which lamp are made many coloured, and may carry advertisements, the
effect of which is automatically kaleidoscopic. The colours may be in segments or
curved radii.
As an improvement on the horizontal axis lamp described in the letters patent
beforementioned, I revolve it on two points bearing in two small conical holes,
or one of the points may be cut off, forming a truncated cone bearing, to permit
the passage of the gas through the axis or pivot to the burner: small subsidiary
fans may be placed at the side of the lamp.

page_text: Improvements in Revolving or Intermitting Lamps in which
Motion is Produced by Heated Air Rotating a Fan or Fans.
I JAMES ROOTS, of 144 Bishopsgate Without London E.C. Engineer do hereby
declare the nature of my said invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
I divide the interior of a lamp or globe A. (see Figure 1 of the annexed drawings)
by means of an opaque plate B having a slit or hole C of such dimensions that it
shall just permit the revolution of a bracket or arm D carrying the light and
attached to the same pivot or axis E as the fan F Thus when the fan F revolves
it carries with it the bracket or arm D from one side to the other of the plate B
producing intermittent light. The plate may be completely or partially opaque
or coloured.
The light itself may be stationary and an arm or bracket G (see Figure 2)
attached to the fan axis or pivot E in its revolution strikes the cock or tap H of
the supply; the supply is thus alternately increased and decreased and the light
made intermitting: or a small crank or excentric G (Figure 3) attached to the
fan axis E may in the same way turn on and partially off the supply and with
it the light.
Hitherto in revolving lamps the fan F has been constructed to revolve upon
a point at the bottom of the pivot E and within a loose hole bearing beneath the
fan F I by placing the upper bearing I above the fan F and constructing the
pivot E (see Figure 4) to revolve upon two steel hardened points J J obtain a
great advantage both as regards friction and steadiness and am enabled to revolve
a much heavier lamp as in shop front lamps.
Where the axis or pivot E of the fan F is perpendicular I attach the globe or
glass A (see Figures 5 and 6) to the fan pivot E in the following manner; a pro-
jecting rim is made on the top of the globe or glass A which is fitted into two or
three crooks or clutches K K the third or fourth crook or clutch K is formed by a
screw L and is thus adjustable. The said two or three crooks or clutches K K
may be cast in one piece with their radial arms M M which may be attached to or
cast with the fan pivot or axis E, or the crooks or clutches K K may be attached
directly to the periphery of the fan.
A triangular tubular chamber N (Figure 7) whose inner surface P is reflecting is
placed before the lamp as described in my Letters Patent 5761 of 1884, the sides
of which lamp are made many coloured and may carry advertisements, the effect
of which is automatically kaleidoscopic. The colours may be in segments or in
curved radii as shown at Figure 8 or the disc may revolve by bevilled pinions C³, C¹³¹,
as in Figure 10.

page_text: An improvement in the horizontal axis lamp (see Figure 9) as described in my
letters patent before mentioned I revolve it on two points J J bearing in small
conical holes or one of the points may be cut off forming a truncated cone bearing Q
for the passage of the gas through the axis or pivot E to the burner R.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
The improvements in revolving or intermitting lamps hereinbefore set forth and
as shown in the annexed drawings for the purpose described.