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Патент USA US3089933

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May 14, 1963
R. E. BRocK, JR
Filed Nov. 21. 1961
United States Patent 0 "
Patented May 14, 1963
?ange 39 which bears against the upper side of the open
ing 25 in the guide plate 24. A collar 40 is rigidly af?xed
to the selector rod and a compression coil spring 41 beats
Russell E. Brock, Jr., 8 Chester Ave., Rome, Ga.
between the upper side of the collar 40 and the under
Filed Nov. 21, 1961, Ser. No. 153,913
side of the guide plate 24. A sidewardly projecting arm
4 Claims. (Cl. 200-5)
42 is permanently a?ixed to the selector rod.
This invention relates generally to electrical switches
In operation the selector rod is rotated to the position
and more particularly to simultaneous position switches.
desired and moved upwardly. This causes the projecting
It is an object of the present invention to provide a
arm 42 to depress the movable contact 28 by bearing
simultaneous position switch o?ering positive and trouble 10 against the collar 29. A?ixed to the contact shank, upon
free performance.
being moved, the contact 28 engages contact 18. At this
Another object of the present invention is to provide a
point the collar has overridden upwardly past the spring
simultaneous position switch having a selector rod which
stop 32 and is releasably held therebehind. The selector
selectively makes electrical contact at the places required.
rod is returned to its normal position again by means of
Other objects of the invention are to provide a simul 15 the spring 41 bearing against the underside of the guide
taneous position switch bearing the above objects in mind
plate 24. The contact is now complete between the wires
which is of simple construction, has a minimum number
23 and 20. To place the switch into the “Off” position
of parts, is inexpensive to manufacture and e?‘icient in
again, selector rod is in the position indicated, the element
operation and use.
33 is depressed. This forces the upper edge of the ele
For other objects and for a better understanding of the 20 ment 33 to bear against the spring clip stop 32 forcing
invention, reference may be had to the following detailed
the same toward the wall, thereby permitting the collar
description taken in conjunction with the accompanying
29 on contact 28 to be returned downwardly ‘due to the
drawing, in which:
action of the coil spring 31. The element 33 is then re
‘FIGURE 1 is a longitudinal cross sectional view of
turned downwardly again due to the action of the coil
the present invention;
25 spring 35 against the ?ange 34.
FIG. 2 is a top elevational view thereof.
Referring now to the drawing in detail, the numeral 10
represents a simultaneous position switch according to the
present invention wherein there is a case 11 of generally
While various changes may be made in the detail con
struction, it shall be understood that such changes shall
be within the spirit and scope of the present invention
as de?ned by the appended claims.
cylindrical con?guration. The lower portion of the outer 30
What I claim ‘as new and desire to protect by Letters
Patent of the United States is:
1. In a simultaneous position switch the combination
of a case of cylindrical con?guration, the lower portion
cylindrical surface 12 is provided with a thread 13 which
is threadedly engaged with a mounting adaptor 14. The
adaptor 14 has a thread 15 on its outer side which is en
gageable with corresponding parts when mounting the
of said cylinder being threaded and an adaptor threadedly
present switch in a panel. The adaptor 14 is provided 35 secured thereto, the upper end of said cylinder comprising
with an outwardly extending ?ange 16, the underside of
‘a support plate, a plurality of contacts disposed in cir
which bears against the front face of the panel. The top
cular arrangement and extending through said support
end of the case is provided with a wall 17 through which
plate, solder lugs a?ixed to each of said contacts on the
there extend a plurality of contact elements 18. A solder
upper surface of said support plate, a plurality of mov
lug 19 is affixed to each of the said contact elements in
able contacts below said contacts mounted in said sup
order to attach an electrical wire 20 thereto. Thus, the
port plate, each of said movable contacts electrically
top plate serves as a support plate for the contacts. A
connected to a plurality of upstanding contacts, said up
like number of contact elements 21 extend through open
standing contacts extending upwardly through. said sup
ings 22 within the support plate. The outward ends of
port plate in concentric arrangement respective to ?rst
the contact elements are connected to wires 23 as shown 45 said contact, said ?rst contact and said movable contacts
in FIG. 1 of the drawing. A guide plate 24 is al?xed in
being in alignment with each other and an internal cylin
permanent position relative to the sides of the case and
drical element slidable within the ?rst said cylinder, said
is provided with a large central opening 25 and radially
cylinder element having a central opening in a bottom
disposed openings 26, adjacent each of the openings 26
wall thereof, said upper cylinder, support plate having a
is a notch 27 within which the lower end of the contact 50 guide plate therebelow, a central opening in said guide
element 21 is placed.
plate, a longitudinally extending selector rod extending
A sliding contact element 28 extends upwardly through
through said openings in said guide plate bottom wall of
the opening 26, the sliding contact being in alignment
said inner cylinder element, said selector rod being ro
with the contact 18 in the support plate. The contact ele
tatable and having an outwardly extending arm for urg
ment 28 is comprised of a longitudinal shank upon which 55 ing upwardly any preselected movable contact for engage
collars 29 are fixed at its lower end and collars 30‘ are
ment with ?rst said contacts in said support plate.
allixed at an intermediate position. A spring 31 is located
2. In a simultaneous position switch the combination
between the collar 301 and the underside of the guide plate
as set forth in claim 1 wherein said selector rod has an
24, the spring 31 being in tension and normally urging
outwardly extending ?ange adjacent its upper edge and
the said movable contact downwardly.
60 above said opening in said guide plate a collar af?xed
A yieldable spring 32 is a?ixed to the interior side 33
around said selector rod at a point between the opposite
of the case, the spring being in the path of travel of the
ends thereof a compression coil spring between the upper
collar 29, the spring forming a stop for the collar when
side of said collar and the lower side of said guide plate.
the same overrides the spring upwardly.
3. In a simultaneous position switch the combination
Within the center of the case is a cylindrical element 33 65 as set forth in claim 2 wherein each of said movable con
slidable within said case and having an outwardly extend
tacts comprises a longitudinally extending shank extend
ing ?ange 34- integral therewith. A compression coil
spring 35 bears between the upper side of the flange and
the lower edge of the case. The element 33 is provided
ing through openings in said guide plate, a collar affixed
to said shank near its lower edge, a second collar a?ixed
to said shank at a point between opposite ends of said
with a bottom wall 36 having an enlarged central open 70 shank, the upper end of said shank having an enlarged
ing 37 through which there extends a selector rod 38.
head forming a contact, said enlarged head being above
the opening in said guide plate and a compression coil
The upper end of the selector rod 38 is provided with a
tween the lower edge of the ?rst said cylinder and an out
spring between the upper side of the latter said collar
and the lower side of said guide plate.
wardly extending ?ange a?ixed to said inner cylinder ele
4. In a simultaneous position switch the combination
as set forth in claim 3 wherein the ?rst said cylinder
References Cited in the ?le of this patent
has a plurality of spring stops a?‘ixed to the interior sides 5
thereof, said spring stops extending in the path of said
lower collar of said movable contact and said inner cylin
Greene _______________ __ May 17,
der element having an upper edge engageable with said
McMillan _____________ __ June 24,
spring stops for retraction thereof to release said movable
contact, said inner cylinder element being normally urged
downwardly by means of a compression coil spring be
Stringer ______________ __ June 20, 1939
Prank _______________ __ Nov. 1, 1955
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