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Патент USA US2128995

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SePt- 6, 1938-
L. c. FISHER ET AL
2,128,995
ELECTRICAL DISTRIBUTION SYSTEM
Filed April 17, 1936
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' INVENLORS
BY
ATTORNEY.
Sept. 6, 1938.
‘
1.. c. FISHER ET AL
2,123,995
ELECTRICAL DISTRIBUTION v SYSTEM
Filed April 1'7, 1936
2 Sheets-Sheetv 2
1.90
;
Mentors
4
Gttorneg
‘Patented Sept. 6, 1938
2,128,995
UNl'i‘ED s'm'ras PATENT OFFICE
2,128,995
7
ELECTRICAL DISTEIBUTIQN SYSTEM
Lyman 0. Fisher and William H. Frank,
Detroit, Mich.
Application April 17, 1930, Serial No. 74.903
8 Claims.
This application relates to the stationary or
'(Cl. 241-3)
duct parts of electrical distribution systems of the
trolley duct type, such as the one shown in a
prior application, Serial No. 38,392, ?led August
6 29, 1935 by Lyman C. Fisher and William H.
Frank.
‘
g
'It more particularly relates to a coupler for
duct lengths.
For an understanding of the coupler here
10 shown, reference should be had to the appended
drawings illustrating the coupler. In these draw
ings,
,
Fig. 1. shows a split coupler per se;
Fig. 2 is a sectional‘view on line 2-»2 of Fig. 1;
15
Fig. 3 is a cutaway plan view showing the cou
pler in associattion with two ends of duct lengths;
Fig. 4 is a plan view showing the coupler asso- -
ciated with one duct length end and about to
receive another duct length end;
20
Fig. 5 is a cut away view in elevation of a cou
pler receiving one duct length end and about to
receive another;
Fig. 6 is a view similar to Fig. 5 but with the
parts not cut away.
_
'
8 to which are in turn secured bus coupler con
ducting sleeves ‘I. The tour sleeves ‘l mate in two
pairs to form bus coupler sleeves for coupling
ends of bus bars 94, and the four insulators 6
mate in two pairs to couple insulation lengths 95 5
and preserve the continuity of the insulation be
tween the bus bars and the duct casings 90 and
the coupler parts i and 2.
When a part 2 is detached from or applied to a
part I, the part- ‘i carried by such. part 2 moves 10
with it and enters into cooperation with the mat
ing parts ‘i secured to part i for the purposes of
forming a coupler for the bus bar ends 94 which
are within the coupler formed by parts i and
2-2.
15
We claim:
1. For a duct run comprising two lengths of
slotted tubular bus duct having bus bars extend
ing beyond the ends of the lengths, a drop-out
coupling member for coupling the duct lengths 20
and for providing a means whereby the adjacent
ends of the lengths may be removed from the line
of the duct run and whereby a trolley within the
duct run may be removed from the duct run at
It will be understood that the coupler hereof is
used to couple ends of duct lengths of the char-'
acter shown in the above application where the
the coupling, the coupling member comprising a
slotted tube whose cross section is slightly larger
than that of the duct lengths whereby it may
bus bar lengths 9d are longer than the insulation
lengths 95, and these in turn are longer than the
30 duct casing lengths 96, as illustrated in Figs. 3—6.
For coupling two ends of ductiengths there‘ is
with such lengths having their ends remote from
provided the coupler hereof, and the latter will
now be described.
.
The coupler comprises a short length of tube
35 formed of a top part I and two bottom parts 2,
the part i having two ?anges 3, each of which
mates with a ?nage It on a part 2 tor the recep
tion of detachable fasteners such as the screws 5,
whereby the bottom parts 2 may be removed
4.0 from a top part i or applied thereto, at will, re
gardless of whether or not the ends of adjacent
duct lengths are within the part I. In this way,
by removing parts 2 from an installed duct run.
coupled ends of duct sections may be dropped
out ‘of the run, and, also, trolleys within the duct
may be dropped out of the run. The parts 2 may
be applied to a part i after duct section ends are
within the part i, so that coupling of these ends
may be made after the duct sections and part i
are mounted on their supporting surfaces; also
when the parts 2 are applied to a part I, they re
establish the continuity of the tracks of the duct
run destroyed by removal of parts 2 from part I.
On the two sides or the part i and on the two
55 sides of the parts 2 are secured insulation parts
receive the duct lengths telescoped thereinto,
each other, the member being split transversely 30
between its slotted wall and the wall opposite
thereto into complementary sections, one of
which is removable from the other and comprises
two separate side parts, the member having ex
ternally accessible means to secure the two sepa 35
rate parts oi’ one oi’ the complementary sections
to the other of the complementary sections, the
member having therein busrcoupling means.
2. For a duct run comprising two lengths of
slotted tubular bus duct having bus bars extend
ing beyond the ends of the lengths, a drop-out
coupling member for coupling the duct lengths
and for providing a means whereby the adjacent
ends of the lengths may be removed from the line
of the duct run and whereby a trolley within the
duct run may be removed from the duct run at the
coupling, the coupling member comprising a slot
ted tube whose cross section is slightly larger than
that of the duct lengths whereby it may receive
the duct lengths telescoped thereinto, the mem
ber being split transversely between its slotted
wall ‘and the wall opposite thereto into comple
mentary sections, one of which is removable from
the other and comprises two separate side parts,
the member having externally accessible means
2
2,128,995
to secure the two separate parts of one of the
complementary sections to the other oi.’ the col -
plementary sections, the member having therein
bus coupling means.
3. For a duct run comprising two lengths oi’
slotted tubular bus duct having bus bars extend
ing beyond the ends of the lengths, a drop out
coupling member for coupling the duct lengths
and for providing a means whereby the adjacent
10 ends of the lengths may be removed from the line
of the duct run and whereby a trolley within the
duct run may be removed from the duct run at
the coupling, the coupling member comprising a
slotted tube whose cross section is slightly larger
15 than that of the duct lengths whereby it may
receive the duct lengths telescoped thereinto, the
member being split transversely between its
slotted wall and the wall opposite thereto into
complementary sections, one of which is remov
able from the other and comprises two separate
side parts, the member having externally acccs- ‘
sible means to secure the two separate parts of
one of the complementary sections to the other
of the complementary sections, the member hav
25 ing therein bus coupling means, sectionally ar
ranged so that parts of such means may be as—
sembled around and applied to bus bar ends dis
posed within parts of the member.
4. For a duct run comprising two lengths of
30 slotted tubular bus duct having bus bars extending beyond the ends of the lengths, a drop out
coupling member for coupling the duct lengths
and for providing a means whereby the adjacent
ends of the lengths may be removed from the
35 line of the duct run and whereby a trolley within
the duct run may be removed from the duct run
at the coupling, the coupling member comprising
a slotted tune whose cross section is slightly
larger than that of the duct lengths whereby it
40 may receive the duct lengths telescoped there
into, the member being split transversely between
its slotted wall and the wall opposite thereto into
complementary sections, one of which is remov
able from the other and comprises two separate
45 side parts, the member having externally acces
sible means to secure the two separate parts of
one of the complementary sections to the other
of the complementary sectlons, the member hav
ing therein bus coupling means, sectionally ar
50 ranged so that parts of such means may be as
sembled around and applied "to bus bar ends dis
posed within parts of the member, with some of
the bus coupler parts being carried by the parts
of the removable section of the member.
55
5. For a duct run comprising two lengths of
slotted tubular bus duct having bus bars extend~
ing beyond the ends of the lengths, a drop out
coupling member for coupling the duct lengths
and for providing a means whereby the adjacent
ends of the lengths may be removed from the
line of the duct run and whereby a trolley within
the duct run may be removed from the duct run
at the coupling, the coupling member comprising
a slotted tube whose cross section is slightly larg~
er than that of the duct lengths whereby it may
receive the duct lengths telescoped thereinto,
with such lengths having their ends remote from
each other, the member being split transversely
between its slotted wall and the wall opposite
thereto into complementary sections, one oi.’ 15
which is removable from the other and comprises
two separate side parts, the member having ex
ternally accessible means to secure the two sepa
rate parts of one of the complementary sections
to the other of the complementary sections, the 20
member having therein bus coupling means, sec
tionally arranged so that parts of such means
may be assembled around and applied to bus bar
ends disposed within parts of the member.
6. For a duct run comprising two lengths of
slotted tubular bus duct having bus bars extend
ing beyond the ends of the lengths, a drop out
coupling member i'or coupling the duct lengths
and for providing a means whereby the adjacent
ends of the lengths may be removed from the line
of the duct run and whereby a trolley within the 30
duct run may be removed from the duct run at
the coupling, the coupling member comprising a
slotted tube whose cross section is slightly larger
than that of the duct lengths whereby it may
receive the duct lengths telescoped thereinto, with
35
such lengths having their ends remote from each
other, the member being split transversely be
tween lts slotted wall and the wall opposite there
to into complementary sections, one of which is
removable from the other and comprises two
separate side parts, the member having exter
nally accessible means to secure the two separate
parts of one of the complementary sections to
the other of the complementary sections, the 45
member having therein bus coupling means, sec
tionally arranged so that parts of such means
may be assembled around and applied to bus bar
ends disposed within parts of the member, with
some of the bus coupler parts being carried
by the parts of the removable section of the mem
ber.
LYMAN C. FISHER.
WILLIAM H. FRANK.
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