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Патент USA US2408752

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Oct. 8, 1946.
‘
’ "2,408,750.
L. R. BOLTE
’
TEMPERATURE
INDICATING'ELECTRIC
Filed March e, 1945
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Patented Oct. 8, 1946
2,408,750
UNITED STATES PATENT OFFICE
2,408,750
TEMPERATURE INDICATING ELECTRIC
IRON
Leo Roman Bolte, Staten Island, N. Y.
Application March 6, 1943, Serial No. 478,223
1 Claim.
(Cl. 219-25)
1
2
This invention relates to electric sadirons with
temperature gauges.
An object of this invention is to provide a
sadiron of the character described having an
electric heating element, and a temperature
gauge to indicate the temperature of the iron.
Another object of this invention is to provide
in a cover plate 30 covering a cavity 3! at the top
of the iron. Shaft 28 passes through cover plate
3s]. Fixed to the upper end thereof is a pointer
33. On cover plate 30 is a dial 34 calibrated for
an iron of the character described having means
prong I6.
to automatically switch off the heating element
when the temperature of the iron reaches a pre
determined temperature, and means to manually
adjust such predetermined temperatures.
Thus
the user may regulate the temperature above
which the iron will not heat so that the iron can
be used for different materials with safety.
Still another object of this invention is to pro
vide a strong durable and compact iron or" the
character described which shall be relatively in
expensive to manufacture, easy to manipulate
and adjust, and which shall yet be practical and
e?icient to a high degree in use.
temperature.
Beneath arm El and contacting the same is a
terminal 35 connected by wire 36 to the other
When arm ‘2? contacts terminal 35,
the circuit is complete through coil i9 to heat
the same. At the same time element 2| is also
heated and it then opens up causing the free end
26 to move and swing arm 21, to thereby also
move pointer 33 over dial 34 to indicate the tem
perature.
When the temperature is such that
arm
moves beyond and off terminal 35, the
circuit is broken. As the element cools arm 21
swings back to element 35. Cover plate 30 has
a curved slot 43. Slidably mounted on cover plate
30 and passing through slot 49 is a, member 4|
attached to terminal 35. By sliding member 4!
in slot 49, the position of terminal 35 can be ad
justed. The user may thus set the maximum
Other objects of this invention will in part be
temperature for the iron.
obvious and in part hereinafter pointed out.
It will thus be seen that there is provided a
The invention accordingly consists in the fea
tures of construction, combinations of elements, 25 device in which the several objects of this inven
and arrangement of parts which will be exempli
tion are achieved, and which is well adapted to
meet the conditions of practical use.
?ed in the construction hereinafter described,
As various possible embodiments might be
and of which the scope of application will be
indicated in the following claim.
made of the above invention, and as various
In the accompanying drawing, in which is 30 changes might be made in the embodiment above
shown one of the various possible illustrative em
set forth, it is to be understood that all matter
herein set forth or shown in the accompanying
bodiments of this invention,
Fig. 1 is a perspective view of an iron embody
drawing is to be interpreted as illustrative and
ing the invention;
not in a, limiting sense.
Fig. 2 is a top plan view of said iron with parts
Having thus described my invention, I claim as
broken away and in cross-section; and
new and desire to secure by Letters Patent:
Fig. 3 is a side-elevational view of the iron with
A temperature indicating device for an elec
parts broken away.
trically heated appliance, said appliance includ
Referring now in detail to the drawing, 10 des
ing a body portion having a cavity with electrical
ignates a sadiron embodying the invention. Said 40 heating means in said cavity and a cover plate
iron comprises a body II and a handle 12. At
on said body portion over said cavity, said device
the back of the body II is a socket 13, to receive
comprising a dial having a curved slot ?xed to
one end 14 of an electric cord connector. In the
said cover plate, a substantially U-shaped ther
socket l3 are a pair of prongs I5, 16 to be received
moresponsive element in said cavity, said element
in the connector [4.
45 having one leg of the U pivoted to the cover plate,
In the body is a cavity l3. Therein is an
’ a vertical shaft journalled in the cover plate, a
electric resistance coil l9 connected at one end to
short arm ?xed to said shaft below the plate, the
prong I5. The other end of coil 19 is connected
other leg of the U-shaped element pivoted at its
to one end 20 of a thermostatic element 2|. Said
end to said short arm, a pointer ?xed to said
element 2| is of the bi-metal type. One end 50 vertical shaft, a member slidable in the slot of
thereof is pivoted at 20 to a vertical pin ?xed to
said dial, said slidable member having a terminal
cover plate 30. Said element 2| has an arm 24
in said body cavity connected to said heating
from which there extends an arm 25 at an angle
means, said terminal adapted to contact said
thereto. Arm 25 has a free end 26 pivoted to
short arm.
LEO ROMAN BOLTE.
an arm 21 ?xed to a vertical shaft 28 Journalled 55
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