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Oct. 1, 1946.
‘
'
c. H. MOCLURE
2,408,553
LOW VOLTAGE FLASHER
Filed July 4, 1942
iNVENTOR
CHAUNCEY H.McCLURE
w.
2,408,568
Patented Oct. 1, 1946
UNITED STATES PATENT OFFICE
4
2,408,568
Low VOLTAGE FLASHER
Chauncey H. McClure, Milwaukee, Wis., assignor
of one-half to Isidore Davidoff, Milwaukee, Wis.
Application July 4, 1942, Serial No. 449,775
1 Claim. (Cl. 200-122)
1
2
This invention appertains to self-contained
electric ?ash lights, hand lanterns and the like
by the ?asher or winker for detachable engage
ment with the central contact of the hand lan
tern whereby not only will the ?asher or winker
and more particularly to a novel ?asher appli
be e?ectively held in place against accidental
displacement but whereby the correct installa
any low voltage electric light, one of the primary OT tion of the ?asher or winker in the lantern is
uses of my device and one of the primary ob
insured.
ance for low voltage electric lamps.
While my invention is susceptible for use on
jects of my invention is to provide a ?asher or
winker for use in conjunction with electric sig
naling lanterns commonly employed by auto
mobile drivers during the changing of tires orv
the making of repairs while on a highway to warn
tra?ic of such stop for'repairs and thus eliminate
accidents caused by vehicles being stalled on the
With these and other objects in view the in
vention consists in the novel construction, ar
rangement and formation of parts, as will be
hereinafter more speci?cally described, claimed
and illustrated in the accompanying drawing, in
which drawing:
Figure 1 is a side elevational view of a portable
15 electric hand lantern with parts thereof broken
away and in section and illustrating my novel
Another salient object of my invention is tov
?asher or winker attachment associated there
provide a flasher or winker attachment for elec
highway.
‘
-
with.
Figure 2 is a horizontal sectional view through
can be readily and easily placed in a con?ned 20 the lantern taken on the line 2—2 of Figure 1
looking in the direction of the arrows. ,
space in an ordinary ?ash light without any
Figure 3 is a top plan view of my novel ?asher
change in the construction of said lantern or
tric hand lights, which is of an exceptionally
simpli?ed and compact order, whereby the same
?ash light.
'
A further object of my invention is to provide
a ?asher or winker which will effectively operate
on low voltage electric hand lanterns or the like
embodying a thermostatic blade carrying a con
or winker attachment.
Figure 4 is a horizontal sectional view through
the ?asher or winker taken substantially on the
line 4——4 of Figure 6 looking in the direction of
the arrows.
Figure 5 is a bottom plan view of the ?asher or
tact which normally engages a stationary contact
winker, with a part of the bottom contact plate
on one of the conducting plates of the ?asher,
whereby as soon as the control switch is turned ~30 broken away.
Figure 6 is a side elevational view of the ?asher
on the current will be completed through the
or winker.
electric bulb, thereby causing the instant light
Figure 7 is a transverse sectional view through
ing of the bulb and the ?ashing thereof upon the
the ?asher or winker taken on the line “|—‘| of
heating of the blade, the construction allowing
the lighting of the bulb even with a weak current 35 Figure 3 looking in the direction of the arrows,
the ‘view being taken on the larger scale than
which would not cause the heating of the blade.
Figures 3 to 6 inclusive.
A further important object of my invention is
Referring to the drawing in detail wherein
the provision of a ?ne Nichrome wire wound
similar reference characters designate corre
about the bi-metallic or thermostatic blade
' through which the current flows direct from the 40 sponding parts throughout the several views the
letter “L” generally indicates a portable, self
lower contact plate to the upper contact plate,
contained electric hand lantern and “A,” my novel
so as to permit the effective operation of the
?asher or winker attachment therefor.
?asher even in extreme low temperatures, the
The hand lantern L is of a common type now
construction being such that the ?ashing of the
bulb is insured until a, temperature is reached 45 sold on the open market and hence the same will
not be described in detail, but it is to be noted
which would affect the operation of the battery
that the same includes a casing II] which detach
itself.
ably receives and houses an electric battery ll.
A still further important object of my inven
One side of the casing Ill carries an electric light
tion is to provide a ?asher or winker which can
' be manufactured at a low cost and in which all 50 or bulb l2 for illumination and the top of the
working parts are enclosed and thereby protected
casing carries a bulb I 3 for signaling purposes.
The bulb I3 is preferably inclosed by a red trans
against dirt, grease or the like, and one in which
the parts will not be a?ected by rough handling.
parent dome l4 so that the light emanating from
A still further important object of my inven
the bulb will be of a red color when viewed through
“tion is the provision of means carried directly 55 the dome. The lighting of the lamps l2 and I3
2,408,569
3
4
is controlled by a movable switch plate I5. This
switch plate rotates on an axially disposed pin I6
the clamp 35 underneath the arm 2i. Obviously
side contact or terminal of the battery is in elec
or the bulb will engage the contact 3| of the
winker. The lantern is now ready for use for
this will ?rmly hold the winker or ?asher in cor
which is in electrical contact with a bottom cen
rect position against displacement. The bulb and
tral contact member I‘! which engages the cen
other parts of the lantern are now placed back
tral contact or terminal of the battery II. The 5 in their normal position and the center contact
trical contact with a supporting switch plate I8,
which is grounded to the frame or casing of the
lantern. As in the usual construction the side
contacts of the bulbs l2 and I3 are also grounded
to the frame of the lantern. Insulated from the
plate i8 is a pair of stationary jaws I9 and 20.
One of these jaws I9, is in electrical communica
tion with the center contact of the bulb I2 and
signaling purposes and when the switch plate
thereof is operated to the proper position current
will ?ow from the battery II to the stud I5
through the switch blade 22, jaw 23, resilient arm
2I, lower contact plate 28, the ?ne Nichrome wire
35, the contact points 34 and 3I through the bulb,
through the lantern casing to supporting plate
the jaw 20 is in electrical contact with the base 15 I8 and back to the battery II through its side
or center contact of the bulb I3 through the
medium of a centrally disposed resilient contact
arm 2 I. By turning of the switch plate I5, a con
terminal. When this circuit is completed the
bulb I3 will instantly light and after a few mo
ments the thermostatic blade 32 will heat causing
tact arm 22 mounted thereon and in electrical
a momentary breaking of the circuit through the
contact with the stud I6 can be moved into en~ 20 bulb I3. As the thermostatic blade cools current
‘ gagement with either one of the jaws I!) or 2D.
?ow will again be established and the ?ashing
In accordance with my invention, the novel
of the bulb I3 is continued as long as the switch
?asher or winker A is adapted to be placed be
is maintained in its closed position for said bulb.
tween the resilient contact arm 2| and the base
As the inherent resiliency of the switch blade
or central contact of the bulb I3 as can be clearly 25 normally holds the contact 313 in engagement
seen by referring to Figure 1.
with the contact 3| all adjustment of contact
This wink-er or ?asher attachment A includes
points is eliminated and the ?asher or winker A
a main body plate 25 constructed from ?bre or
will not be aiTected by extreme cold temperatures
some suitable insulating material and this body
and hence the operation of the lantern for sig
plate is preferably, but not necessarily, of a square 30 naling purposes is insured. Great stress is laid
shape when viewed in plan. The body plate 25
on the fact that the contacts 34 and 3I are
can be provided with an opening 25 as is clearly
shown in Figures 4 and 7 or if preferred the body
plate can be of an open frame-like construction.
normally in engagement, because not only will
the lantern operate effectively in cold weather,
but when the battery becomes weak the bulb I3
Connected to the upper and lower faces of the 35 will light even though the current will be in
body plate 25 is a top conducting plate 21 and a
bottom conducting plate 28. These plates 21 and
28 are formed from relatively thin sheet metal
and can be in the nature of strips which extend
across the body plate at right angles to one an
other. The top plate 2‘! is held in place by studs
or fastening elements 29, while the lower plate
sufficient to heat the thermostatic arm.
If the
bulb I3 should burn steadily, this would indicate
that a new ‘battery should be installed in the
lantern. Hence in my ?asher heat is employed
to break contacts and spring tension and the
blade is employed to hold contacts in engage
ment.
28 is held in place by independent studs or fasten
The period of time of the ?ashing of the bulb
I3 can be controlled by the length of the blade,
‘ conducting plate 2‘! is a contact point 3| which is 45 the resiliency of the blade and the length or
preferably formed from silver. Arranged within
number of turns of the Nichro-me Wire around
the opening 26 in the body plate 25 is a thermo
the blade.
static blade 32. The blade 32 is of a well known
From the foregoing description it can be seen
construction and can consist of two strips of metal
that I have provided an exceptionally simple,
having different co-ef?cients of heat expansion. 50 durable and compact form of flasher or winker
The outer end of the blade is ?rmly anchored in
which can be connected or easily installed in a
the body plate 25, as at 33 and the other end of
conventional portable electric low voltage light.
the blade carries a contact point 33, which can
The top and bottom contact plates of the ?asher
be formed from silver or the like, and this contact
are utilized as seals for the opening in the body
point 34 normally engages the contact point 3i. 55 plate and these plates completely enclose and
By referring to Figure 7, it can be seen that the
house all working parts of the ?asher and thus
blade is supported by the body plate of insulation
such working parts are protected from dirt, dust,
and hence does not engage either the top or bot
grease and the like. Due to the simplicity of
tom plate 27 or 28. However, its contact point
the ?asher and the fact that the same is made
34 engages the contact point 3| carried by the 60 from materials that are not easily broken the
top plate 21. A ?ne Nichrome wire 35 is wound
?asher itself will stand an unusual amount of
ing elements 38.
Secured centrally to the top
about the blade 32 and one end of the wire is
, electrically connected to the contact point 34 and
rough handling without breakage.
Some of the important features of my inven
the inner end of the wire is in electrical contact
tion are that the top and bottom plates 21 and
with the bottom plate 28, such as through the 65 28 are insulated from one another and do not
medium of one of the fastening studs 30.
contact at any point or place except through the
Also, in accordance with my invention the bot
silver contact points 3| and 34. Hence, the cur
tom plate 28 has riveted thereto a spring clamp
rent goes direct from the bottom plate through
36 and this spring clamp projects toward the cen
the ?ne Nichrome wire 35 to the contact points.
ter of the ?asher or winker.
70 Thus I am enabled to control the true amount
In installing the winker or ?asher, the dome
of current desired for best results. As the con
I4 and associated parts including the re?ector
tacts are normally in engagement, the necessity
and bulb I3 is removed from the hand lantern
of having an adjustable gap between the points
and the winker is placed on the resilient contact
is eliminated. By controlling the ?ow of ourarm 2 I. This is accomplished by merely slipping 75 rent, I am enabled to get immediate lighting of
2,408,568
5
the bulb, longer life to the battery and the light
will continue to burn even when the strength of
the battery is insuflicient to heat the thermostatic
arm. The circuit through my ?asher or winker
remains the same irrespective of what type of
hand lantern the same is issued with, and I
need no additional ground wires or the like. Thus
the installation of my device is easy and the
device itself is of a simple construction. The
winding of the wire about the thermostatic blade ‘
can start either from the contact point or from
the hilt or outer end of the blade and hence
the winding of the wire about the blade is a
6
plate of insulation having an opening there
through, thin contact plates secured to the op
posite sides of said ‘body plate and closing said
opening, said conducting plates being insulated
one from the other by the body plate, a thermo
static blade disposed in the opening, means ?rmly
anchoring the outer end of the blade in the
body plate, said blade being insulated from the
contact plates, a contact point carried by one
of the conducting plates for engaging the central
contact of the bulb of the hand lamp, and a
fine Nichrome wire coiled about the blade hav
ing one end electrically connected with the con
ducting plate opposite to the conducting plate
Attention is again called to the
thermostatic blade is entirely in 1‘- having the contact point, and a contact point
on the inner end of said blade electrically con
both the top and bottom plates
nected with the wire and normally engaging the
electrical connection is with the
?rst mentioned contact point and a resilient at
top plate through the silver points.
taching clamp carried by one of said conducting
Changes in details may be made without de
parting from the spirit or scope of my invention, a plates for receiving the contact of the hand lamp
which normally engages the central contact of
but what I claim as new is:
the bulb.
A ?asher or winker attachment for low volt
CHAUNCEY H. McCLURE.
age electric hand lamps comprising a thin body
simple step.
fact that the
sulated from
and its only
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