Sept. 17, 1957
A. M. PICHITINO
2,806,999
BINDING POST STRUCTURE
Filed July 19, 1956
W/MMY
United States Patent 0 "
1
2,806,999
Patented Sept. 17, 1957
2
a further reduced axial portion 23 and a head 24, as
shown. It will be noted that the threaded head 15 is con
siderably larger in cross section than the intermediate
2,806,999
area 13.
The shank portion 18 and other parts of the
elongated stud member integrally formed outwardly of
BINDING POST STRUCTURE
Albert M. Pichitino, Waseca, Minn., assignor to
F.
Johnson Company, Waseca, Minn., a corporation
Application July 19, 1956, Serial No. 598,913
5 Claims. (Cl. 339-129)
This invention relates to binding posts, and more par
ticularly to a binding post structure adapted to be mounted
upon an electrical instrument panel.
It is an important object of the invention to provide an
the intermediate portion are all of a lesser cross sectional
area than that of the intermediate stud portion 13.
The binding post body 11 is constructed of dielectric
material such as nylon and comprises, in turn, an enlarged
1O
portion such as the annular abutment 25 and integrally
formed therewith at a position more remote from the
opening 14, a threaded reduced and tubular portion 26.
The outer end of the threaded tube 26 terminates at 27
which leaves exposed the soldering terminal 22, as shown.
The innermost portion of the enlarged abutment 25 may
be provided with a circular recess 28 into which is received
a metallic washer 29. The binding post body 11 and
the washer 29 are rigidly secured against the shoulder 21
improved binding post of simpli?ed construction which
and in contact with the knurled area 19, as shown. A
20
will be inexpensive to manufacture and easy to install.
nut 30 is drawn up upon the threaded reduced portion 20
Another object of the invention is to provide a special
so as to further secure the binding post body 11 in its
body portion for insertion through a panel opening which
mounted relation with stud 10. The binding post body
eliminates the necessity of extra parts such as sealing
is provided with longitudinal cut portions 31 which render
washers and furnishes increased e?iciency in the mounting
the
threaded portion 26 unsymmetrical and capable of
M
(it
and operation thereof.
being inserted in an opening 32 of the same general con
A further object of the invention is to provide a binding
?guration in an instrument panel 33, as shown in Figure
post structure in which the thumb nut is so made and
1. The binding post body is thus prevented from turning
the assembly steps are so arranged as to captivate the
and the clamping nut 34 which is threadedly mounted
thumb nut without requiring any additional machine
upon the binding post will have su?icient contact with
steps, which captivation prevents the thumb nut from 30 the threaded area 26 to ?rmly mount and hold the bind
being accidentally or deliberately removed from the stud
ing post body in position, as shown in Figure 1.
after the, binding post is manufactured and assembled.
Dielectric securing means such as thumb nut 12 is
These and other objects and advantages of my invention
will more fully appear from the following description,
made in connection with the accompanying drawings,
wherein like reference characters refer to the same parts
throughout the several views and in which:
Figure 1 is a fragmentary vertical section of a typical
panel within which is mounted my binding post structure;
provided with a ?uted exterior surface 35 and an inter
nal bore 36 which extends through the cap and is reduced
to a smaller axial opening 37 at the inner end thereof.
An intermediate shouldered abutment 38 may be formed
within the thumb nut 12 so as to inter?t with the abut
ment 17 when the thumb nut is in the position shown
in Figure 2. The innermost annular face 39 of the
Figure 2 is a vertical section of the binding post struc- '8 thumb nut 12 is adapted to shift inwardly toward the
ture, portions of the stud member being shown in full line;
opening 14 and to ?rmly clamp or bind a conducting
Figure 3 is an end view of the binding post taken in the
terminal
40 when positioned therein, as shown in Figure 1.
direction of the arrows 3—3 in Figure 2;
An electrical circuit may thus be established through the
Figure 4 is another vertical section of the binding post ’ conducting terminal 40 and the stud 10 while maintaining
taken on the line 4—4 of Figure 2; and
metallic parts virtually shielded and covered. The other
' Figure 5 is still another vertical section taken through
conducting lead 41 may be soldered to the soldering
the body portion of the binding post on the line 5——5
terminal 22 or clamped by retaining nut 30 if so desired.
of Figure 2.
With continued reference to the drawing, and par- -
ticularly to Figures 1 and 2, my binding post structure
comprises generally a stud 10 to which is secured a
binding post body 11 and which bears a shiftable di
electric binding means 12.
The stud 10 is an elongated member unitarily con- .
structed of conducting metal and having an intermediate
portion 13 through which is formed an opening 14 adapted
to receive the terminal end of a connecting wire (not
shown). The stud 10 further has an enlarged threaded
head 15 which is coaxially formed with the intermediate
portion 13 and which is provided with a bore 16 which
may be utilized as a receptacle for an electrical plug.
A
bearing shoulder 17 is integrally‘formed with the enlarged
head 15 and interconnects with the intermediate portion
13. Immediately adjacent the intermediate portion 13
is a reduced shank 18 with a knurled area 19 and a
threaded area 20 as shown in Figure 2.
The juncture
In the assembly of the binding post structure, the
elongated metallic stud member is inserted into the axial
bore 36 formed in thumb nut 12 and the thumb nut is
threadedly engaged with the enlarged threaded head 15
with the reduced bore or opening 37 closely surrounding
the intermediate stud portion 13. Since all of the parts
of the elongated stud 10 between the shoulder 17 and the
outer end of the soldering terminal 22 are of a lesser
diameter than that of the reduced bore 37, it becomes
possible to captivate the thumb nut during the assembly
of the binding post structure. It will be observed that
turning the thumb nut 12 so as to retract the annular
face 39 from the opening 14 will finally cause the abut
ment 38 and forward portion at the reduced bore 37 to
come in contact with the enlarged head portion 15 and
bind thereagainst. This method of captivation obviates
a machine operation which would provide an abutment
associated with the outer ends of the stud and thumb nut
as is commonly done in the art. When the thumb nut
of the intermediate portion 13 and the shank 18 provides
12 is advanced toward the opening 14, the threaded head
a shoulder 21 which de?nes the positioning of the opening
15 remains shielded by the dielectric thumb nut 12 even
14 when the binding post is mounted in a panel. The 70 in its most advanced position. Since the thumb nut has
extreme terminal end of the conducting stud 10 provides
an open-ended bore 36, access is retained to the receptacle
an axial soldering means 22, the latter of which may have
bore 16 formed within the enlarged head 15 at all times.
2,806,999
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After the thumb nut 12 has been mounted upon the
stud 10, the metallic washer or ring 29 is positioned
against the shoulder 21 and the entire unitary binding post
body is forced over the knurled area 19 until it ?rmly
contacts the washer 29 and abutment 21. The retaining
nut 30 may then be drawn up tightly on the threaded
area 20 to contact the end 27 cf the binding post body
and thereby rigidly hold the body in mounted relation
with the stud members.
When utilized in a panel struc
ture, the opening 32 is formed so as to assume the shape
of the cut-away threaded area of the body, as shown in
Figure 5. The clamping nut 34 is then secured in place
and the entire stud and binding post body members are
?rmly and rigidly retained against rotation in panel 33.
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adjacent said opening and a threaded reduced portion
integrally formed therewith extending away from said
opening and adapted to be inserted in a panel opening,
a clamping nut threadably mounted on said reduced
body portion and adapted to be drawn up in compressing
relation with the walls of a panel when mounted thereon,
and dielectric means mounted on said stud intermediate
the connector opening and the other end thereof and
being shiftable on said stud toward the connector open
ing for securing a connector terminal therein.
3. The subject matter set forth in claim 2, wherein the
threaded reduced portion of the dielectric body is longi
tudinally cut away in part for keying said body in a panel
when mounted therein and thereby preventing rotation of
Thumb nut 12 may be advanced and retracted without 15 the post in mounted condition.
4. A binding post structure adapted to be mounted
danger of removing the thumb nut from the stud. As
previously pointed out, when a conductor terminal 41'}
is placed in the opening 14, the thumb nut may be drawn
up tightly thereagainst and will shield the metallic parts.
Since the enlarged head 25 of the binding post body is
also constructed of dielectric material and the metallic
washer 29 is countersunk therein, there is very little op
portunity for accidentally coming into contact with a
wire of high voltage which may be secured to the binding
post. Because the entire binding post body is unitary and
constructed of dielectric material, it is possible to mount
the binding post on metallic panels 33 while maintaining
the conducting stud out of electrical contact therewith.
in an opening through a panel comprising, an elongated
electrically conductive stud having a connector opening
laterally disposed therethrough at a position intermediate
the ends thereof, said stud further having an enlarged
head at one end and a reduced terminal at the other end
thereof, a binding post body constructed of dielectric
The features and bene?ts of my binding post structure are
obtained while simplifying the construction and assem
blage thereof.
material secured about said stud conductor intermediate
said connector opening and the terminal end thereof, said
binding post body having an enlarged portion adjacent
said opening and more remotely therefrom a reduced por
tion adapted to extend through a panel opening, a clamp
ing element mounted on said binding post body and
adapted to oppose the enlarged portion in compressing
the Walls of a panel when mounted thereon, and dielectric
means mounted on the enlarged head of said stud and
in shielding relation thereover, said dielectric means being
It will, of course, be understood that various changes
shiftable on said stud toward the connector opening for
may be made in the form, details, arrangement and pro
securing a connector terminal therein.
portions of the parts without departing from the scope
5. A binding post structure adapted to be mounted in
of my invention.
an opening through a panel comprising, an elongated
What I claim is:
electrically conductive stud having a connector opening
l. A binding post structure adapted to be mounted in
laterally disposed therethrough at a position intermediate
an opening through a panel comprising, an elongated
electrically conductive stud having a connector opening 40 the ends thereof and further having an enlarged threaded
head at one end and a reduced terminal at the other end,
laterally disposed therethrough at a position intermediate
a binding post body constructed of dielectric material
the ends thereof, a binding post body constructed of di
secured about said stud intermediate said connector open
electric material secured about said stud conductor inter
ing and the terminal end thereof and having an enlarged
mediate said connector opening and one end thereof, said
end adapted to seal marginally about an opening through
binding post body having an enlarged portion adjacent said
a panel, a clamping element mounted on said binding post
opening and more remotely therefrom a reduced portion
body and adapted to oppose the enlarged portion in com
adapted to extend through a panel opening, a clamping
pressing relation when mounted on the wall of a panel,
element mounted on said binding post body and adapted to
oppose the enlarged portion in compressing the walls of
a panel when mounted thereon, and dielectric means
mounted on said stud intermediate the connector open
ing and the other end thereof and being shiftable on said
stud toward the connector opening for securing a con
nector terminal therein.
2. A binding post structure adapted to be mounted in ,
an opening through a panel comprising, an elongated
electrically conductive stud having a connector opening
laterally disposed therethrough at a position intermediate
the ends thereof, a binding post body constructed of di
electric material secured about said stud conductor inter 60
mediate said connector opening and one end thereof, said
binding post body having an annular shouldered abutment
and a threaded dielectric thumb nut having an axial open
ing reduced at one end thereof, said reduced end opening
being larger than the cross section of both said terminal
and said intermediate portion of the stud but smaller
than said enlarged threaded head whereby the thumb nut
may be mounted on the stud over the terminal and inter
mediate portion and threadably engaged with the stud
head in captivated condition prior to the mounting of
the winding post body upon the stud conductor.
References (Iited in the tile of this patent
UNITED STATES’ PATENTS
2,700,144
2,704,357
Flanagan ____________ __ Jan. 18, 1955
Johnson _____________ __ Mar. 15, 1955