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Jan. 7, ‘1947.
'
1G, 5, HANN’ER
I
' 2,414,040
ADJUSTABLE HANDLE FOR THERMOSTATS
Filed June 26, 1945
INVENTOR.
BY
Patented Jan. 7, 1,947
2,414,040
UNITED STATES PATENTO’FFICEA
ADJUSTABLE HANDLE, FOR THERMOSTATS “
George
Dominion
E. Hanner,
Electrical
Mans?eld,
Manufacturing,
Ohio, assignor
Inc” toa ‘
corporation of Ohio
Application June-26,1945, Serial No. 601,700
6 Claims. (Cl. 744-525)
2
My invention relates to improvements in ad
justment assemblies for thermostats, and in par
ticular to an adjustable handle fastened to the
temperature adjusting screw of thermostats.
It is an object of my invention to provide a
thermostat adjustment assembly having an ad
justable handle which may be used on electrical
appliances of different sizes.
Another object of my invention is the provi
‘
,
4.
permits the operator to adjust the thermostat
for the desired temperature of the appliance
from outside the electrical appliance. My ad
justable handle |l|
handle plate 3|, a
clamping‘ screw 33.
tened to the lever
comprises a lever arm 3|), a
thermostat plate 32 and a
The handle plate 3| is fas
arm 3!] and the thermostat
plate 32 is fastened to the thermostat tempera
ture adjusting screw l3.‘ The clamping screw 33
sion of a handle which may be adjusted as to its 10 operatingly connects the handle plate 3| and the
length to accommodate appliances’ of di?erent
sizes.
A further object of my invention is the provi»
sion, of an adjustable handle which may befas~
thermostat plate 32. The clamping screw 33 may
be a sheet ,metal screw or other suitable screw
means which will clamp the plates together.
The lever arm 3|! extends from ‘the thermo
tened to the thermostat temperature adjusting 15 stat temperature adjusting screw |3 outwardly
screw for operating the screw from a remote
through'the electricalappliance In and is ter
point.
‘
minated in a ?nger grip knob 36, providing man
A still further object of my invention is the
ual control of the lever arm from outside‘the '
provision of an adjustable handle which may be
electrical appliance. The lever arm may be
‘fastened to the thermostat temperature adjust 20 stamped from sheet metal or constructed by other
ing screw after pre-set adjustments of the ad,
suitable means. The internal end of the lever
justing screw have been made and which may be
arm, or that end which encounters the thermo
used for regulating the screw through a range
stat, has openings 35, 31, and 33. The opening
of operating temperatures.
35 is located nearest the knob and the opening
Other objects and a fuller understanding of my
38 farthest from the knob. These openings are of
‘invention may be had by referring to the fOHUl/V".
substantially the same diameter and are longitu~
ing description and claims taken in conjunction
with the accompanying drawing, in which:
Figure 1 is a front elevational view of an elec
trical appliance embodying the features of my in
vention, parts being shown in cross-section;
Figure 2 is a view taken along the line 2-2 of
Figure 1 showing my adjustable handle fastened
to the thermostat temperature adjusting screw;
Figure '3 is a view of the lever arm used in my
adjustable handle.
,
.
‘
Figure 4 is a view of the handle plate which is
fastened to the lever arm shown in Figure 3;
Figure 5 is va cross-sectional view taken along
dinally spaced atdifferent operative lengths from
the ?nger-tip control knob, 36. If an adjustable
handle ‘having a medium. operative length is re
quired, the lever arm may be positioned with the
thermostat temperature adjusting screw extend
ing through opening 31. If an adjustable handle
having a short operative length, such as illusé
trated in Figure 1 for a small electrical appli
, ance is required, the thermostat temperature ad
justing screw l3 may be extended through open
ing 35,. If an adjustable handle having a long op
erative length is required, the lever arm may be
positioned with thermostat temperature adjust
the line 5—-5 of Figure 4;
‘
40 ing screw extending through opening 38. It is
-_ . Figure 6_ is a view of the thermostat plate which
understood that only one of these longitudinally
is fastened to the thermostat temperature ad
justing screw; and
Figure 7 is a cross-sectional View taken along
the line 1-1 of Figure 6.
With reference to my drawing, and in particu
lar to .Figure'l, the reference character In repre
sents an electrical appliance, such as for example ‘
a waffle-iron,'which has a heated plate I | con
trolled by. a" thermostat l2 having an adjusting
temperature screw l3. My adjustable handle I4
is fastened to the thermostat temperature ad
spaced openings will be‘used on. any particular
electrical appliance, but that the adjustable
handle is interchangeable in electrical appliances
of different sizes.
The handle plate 3|, which is carried by the
lever arm 33, has a center opening 40 and a
raised fastening strap portion '4|. The-handle
plate 3| maybe stamped from sheet metal‘ or
otherwise ‘constructed. The center opening 40
is substantially the same diameter as the open
ingsf35, 31, and 38. The handle plate 3| has
curved slots 43, which extend partially about the
The adjustable handle l4, when fastened to" center opening 40. The clamp screw 33 extends
the thermostat temperature adjusting screw |3,> .55 through
oneof vtheselslots and into the thermo
justing screw.
'
'
2,414,040
4
stat plate 32. I have used curved slots to permit
the second plate whereby angular movement of
angular adjustment of the operating handle with
respect to the thermostat temperature adjusting
the adjustable handle turns the screw means for
regulating the thermostat.
screw l3.
stat employed in appliances of different sizes, a
temperature adjusting screw for regulating the
said thermostat, a thermostat plate carried by the
temperature adjusting screw and having at least
The thermostat plate 32, which is fastened to
the thermostat temperature adjusting screw l3,
has an opening 50 in the center thereof with a
?ange 5! about that opening and extending from
2. In an adjustment mechanism for a thermo
a hole therein, a lever arm having longitudinally
one side thereof. The inside surface of this
spaced openings therein, said adjusting screw ex
?ange and the opening 50 has reference character 10 tending
through one of the said spaced openings,
53 and engages the surface of the said screw l3.
handle
plate
means fastened to said lever arm
This thermostat plate may be pressed onto the
and having slot means cooperating with the said
thermostat temperature adjusting screw, or the
hole for angularly aligning the said thermostat
plate 32 may be fastened thereto by other suit
able means. The thermostat plate 32 has holes 15 plate with the handle plate, screw means for in
sertion into the said slot and the said hole for
52 annularly spaced about the ?ange. These
operatively fastening the said plates together,
holes are located to permit the alignment of any
whereby movement of the said lever arm turns
two adjacent holes with one of the curved slots
the said temperature adjusting screw for regulat
43 in the handle plate 3|. However, in actual
ing the thermostat.
practice, the clamp screw 33, which extends
3. In an adjustment mechanism for a thermo
through the slot 43, engages only one of these
stat employed in appliances of different sizes, said
holes 52.
thermostat having a temperature adjusting screw,
In assembly, the thermostat plate 32 is pressed
a thermostat plate carried by the temperature
onto the thermostat temperature adjusting screw
adjusting
screw and having at least a hole there
Hi. The temperature adjusting screw I3 may be 25
in, a lever arm having a handle plate fastened
set approximately to the correct temperature be
thereto, said lever arm having a plurality of Ion
fore the handle i4 is fastened thereto. The ad
gitudinally spaced openings on one end thereof to
justable handle M is positioned about the tem-_
receive
said adjusting screw, said openings pro
perature adjusting screw with the handle plate
3! next adjacent the, thermostat plate 32, and 30 viding means whereby the operative length of the
lever arm may be regulated for appliances of dif
with the ?ange, 5| extending through the opening
ferent sizes, said handle plate having slot means
iii! and the opening 35. The ?ange 5| serves as a
cooperating with the said hole for angularly
pivot bearing for the angular adjustment of the
aligning the thermostat plate with the handle
adjustable handle. After the handle has been
plate, screw means for insertion into the said slot
angularly positioned with respect to the adjust
and the said hole for operatively fastening the
ing thermostat temperature screw [3, the clamp
said
plates together at a ?xed angular position
screw 33 may be inserted through one of the
whereby movement of the said lever arm turns
‘ curved slots 43 and into one of the holes 52. This
the temperature adjusting screw for regulating
set or clamp screw 33 ‘may be tightened to oper
atively fasten the handle plate 3| to the thermo— 4:0 the thermostat.
4. In an adjustment mechanism for a thermo
stat plate 32, thus connecting the adjustable or
stat employed in appliances of different sizes, a
operating handle. M to the thermostat adjusting
temperature adjusting screw for regulating the
temperature screw !3. The operator may regu
said thermostat, a thermostat plate carried by the
late the temperature of the heated plate I I in the
temperature adjusting screw and having at least
electrical appliance l0 by moving the handle I4
angularly about the electrical appliance.
Although I have described my invention with a
certain degree of particularity in its preferred
form, it is understood that the present disclosure
of the preferred form has been made only by way
of example and that numerous changes in the de
tails of construction and the combination and ar
rangement of parts may be resorted to without
departing from the spirit and the scope of the in
vention as hereinafter claimed.
a hole therein, a lever arm for cooperating with
the temperature adjusting screw to provide ?n
ger-tip control of the thermostat from a remote
point, said lever arm having openings therein
through which the said adjusting screw may ex
tend, said openings providing means whereby the
operative length of the lever arm may be regu
lated by extending the temperature adjusting
screw through one of the openings
arm, said lever arm having handle
fastened thereto, said handle plate
ing slot means cooperating with the
in the lever
plate means
means hav
.
said hole for
1. An adjustable handle for a thermostat com
angularly aligning the said thermostat plate with
prising, an arm having at least an opening there
the handle plate means, and clamping screw
in, a first plate with a center opening in the
means for insertion into the said slot and the said
center thereof and with at least an aligning open 60 hole for operatively fastening the said plates to
ing near the circumference thereof, said ?rst
gether at a ?xed angular position with respect to
plate being fastened to thesaid arm with the cen
the temperature adjusting screw.
ter opening being aligned with said opening in the
5. A mechanism for operating a temperature
arm_ a second plate having a center opening in
adjusting screw for a thermostat employed in ap
the center thereof with a ?ange about the center
pliances of different sizes, said mechanism com
opening, and extending outwardly from the sur
prising a ?rst plate member adapted to be fas
face, said second plate having at least an aligning
tened to the temperature adjusting screw, a lever
What is claimed is:
opening ‘for alignment with‘ the said aligning
arm having longitudinally spaced openings there
opening in the said ?rst plate fastening means
in through which said adjusting screw may ex
cooperating with the said aligning openings for
tend, said-longitudinally spaced openings provid
fastening the said plates together, said flange ‘ex 70 ing means for adjusting the operative length of
tendingv through said center opening of the ?rst
the lever arm by extending the adjusting screw
plate and engaging‘ the arm, temperature adjust
through one of the spaced openings in the lever
ing screw means extending through the center
arm,‘ _.a- second plate member- non-rotatably
‘opening of the‘ second plate and. engaging the
thermostat, said screw: means being fastened. ‘to 75
mounted on saidleveruarm‘and longitudinally
5
2,414,040
movable thereon, said second plate member and
said ?rst plate member providing means for an
gularly adjusting the lever arm with respect to the
temperature adjusting screw, and means for fas
tening the plate members together at a ?xed an
gular position.
6. A mechanism for operating a temperature
adjusting'screw for a thermostat employed in ap—
pliances of different sizes, said mechanism com
prising, a lever arm having longitudinally spaced 10
openings therein through which said adjusting
6
screw may extend, said longitudinally spaced
openings providing means for adjusting the oper
ative length of the lever arm by extending the ad
justing screw through one of the spaced openings
in the lever arm, angular adjustment means for
angularly adjusting the lever arm with respect to
the temperature adjusting screw, said angular
adjustment means operatively connecting the said
lever arm to the temperature adjusting screw at
a ?xed angular position.
“
GEORGE E. HANNER.
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