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Патент USA US2134753

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Nov. 1, 1938.
-
L. c. FISHER vEr AL
2,134,753
DETACHABLE COLLECTOR
Original Filed Sept. 18, 1935
s Sheets-Sheet 1
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38
120
INVENTORY
BY ‘1
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Nov. ‘1, ‘1938.
L. c. F‘ISH~ER ET AL
2,134,753
DETACHABLE COLLECTOR "
Original Filed Sept. 18, 1935
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ATTORNEY.
Nov. 1, 1938.
L. c. FISHER 'ET AL
‘2,134,753
DETACHABLE COLLECTOR
Original Filed Sept. 18, 1935
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S'Sheets-Sheet 3
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ATTORNEY.
2,134,753
Patented Nov. 1, 1938
UNITED STATES PATENT OFFICE
2,134,753
DETACHABLE COLLECTOR
Lyman 0. Fisher and William H. Frank, Detroit,
Mich.
Application September 18, 1935, Serial No. 41,048
Renewed January 8, 1938
23 Claims. (Cl. l73-—-328)
This application relates to detachable collectors
or connectors suitable for use with slotted tubu
lar bus duct of the character shown in a copend
5
ing application Serial No. 20,114, ?led May 6,
1935, entitled Methods of making bus duct which
became Patent Number 2,088,106 dated July 27,
1937.
The principal object of the present invention is
to provide a compact and inexpensively made col
l ) lector adapted to be associated with a slotted tu
bular bus duct at any point of the latter by inser
tion of its contacts through the slot, despite the
fact that the slot is much narrower than the dis
tance between the contacts of the collector, when
' these are separated to‘ engage the spaced parallel
bus bars of the duct.
For an understanding of the invention refer
ence should be had to the description which fol
lows and to the appended drawings. In these
drawings,
Figs. 1 and 2 are end views of a terminal type
collector of the invention, shown in the duct in
inserted (on) and insertable (out) positions, re
spectively.
Figs. 3 and 4 are top plan views corresponding
to Figs. 1 and 2.
Fig. 5 is a cutaway top plan view of a plate or
contact carrier part of the collector, as if on line
5-5, Fig. 8.
30
Fig; 6 is a top plan view of a cap or rotary
contact spreader of the collector.
Fig. 7 is a bottom plan view of a plate or con
tact carrier part of the collector.
Fig. 8 is a cutaway elevation view of the col
CD
lector.
.
Fig. 9 shows a modification wherein the collec
tor is in the nature of a receptacle for a cap plug.
Referring to Figs. 1-8 of the drawings, it will
be seen that the slotted tubular duct III with
40 which the collector, referenced generally II, is
to be associated, has an elongated continuous slot
12 in its bottom wall on opposite sides of which
are bus bars l4 whose exposed stripes are to be
associated with the cap; when the notches are out
of register with the lugs the plate will have its
marginal portions 26, between the notches 25,
disposed under the lugs 2| and be held in the cap.
Normally the plate and the cap are associated
and resiliently held together by means to be de- -
scribed, but it is understood that for purposes
of assembly or repair disassociation of the plate
and cap may be effected.
The plate 24 is centrally apertured and jour
nalled within this aperture in an axially immov
able manner is a post 28 of insulation on which
is keyed a metal spring washer 28a provided with
diametrically opposed leaf springs 29 which pro
ject beyond the edge of the plate and are dimen 15
sioned to ?t within the notches 22 of the cap
lugs 2|.
.
It will be observed that when the plate and cap
are associated with each other and the leaf
springs 29 are in the notches 22 (Figs. 1-4), the
plate and cap will be resiliently held in associa
tion with the leaf springs keying the cap and the
central post to each other, the plate acting as a
journal for the cap and the central post so that
these may rotate around the plate. On the other
hand, when the leaf springs are out of the notches
22, and engage the unslotted parts of the margi
nal edge of the cap, the cap may be rotated inde
pendently of the central post so that its lugs 21
may be registered with the notches 25 or with the 30
locking portions 26 of the plate, as desired.
Projecting upwardly from the plate and dia
metrically opposed and aligned with the notches
25 thereof are contact supporting posts 30 from
which upwardly project metallic pins 31 which
form pivotal mountings for elongated contact
leaves 32 of contact material such as copper; the
leaves are substantially parallel and project in
opposite directions from their pivotal mountings;
each leaf, passes through a slot 33 of a cam 34 1
formed as part of the central post.
.
It is observed that when the cap 20, and with
it the central post 28 and the cam 34, are in one
engaged by separated contacts of the connector.
position, (Figs. 1-3), contact leaves 32 are forcibly
> The collector itself comprises a cap or rotary
directed and retained away from each other as
contact spreader part 20 of insulation whose mar
gin is provided with diametrically opposed inte
far as possible by theinner edges of the cam
riorly projecting locking lugs 2| (Fig. 6) having
the cam 34 are in another position, (Figs. 2-4),
the contact leaves are forcibly directed and re
tained together by the edge portions 35 of the -'
slots 22 in their upper surfaces. Disposed within
in o and forming a closure for the open top ‘of the cap
slots, whereas when the cap 20, the post 28, and
is a plate or contact carrier ‘24 also of insulation
cam to be as close as possible in substantially a
(Fig. 5), the plate having diametrically opposed
straight and single line.
notches 25 complementing the lugs 2|. It is ob
served that when the notches are in register with
(a Or the lugs the plate 24 may be withdrawn from or
'
It is also to be observed that when the cam 34
and the contact leaves 32 are in their extreme po
sition last mentioned, that is with the contact
2
2,134,753
leaves as close to each other as possible, that the
edge portions 35 of the cam 34 seat within bends
36 of the leaves so that the leaves and the cam 34
will occupy as little space as possible in a direc
tion across the thickness of the cam; this is of
advantage in that it enables the parts to be dis
posed within as narrow a slot of the duct as pos
sible.
Since it is desirable that movement of cam
10 34 and post 28 from one position to the other be
de?ned and be terminated positively and with a
snap action, there has been provided, on plate 24,
a raised arcuate rail 31 which terminates short
of the extreme positions of spring leaf 29 keyed
15 to cam 34. The gaps between the ends of the rail
and the contact supporting posts 30 of the plate
24 de?ne the limits of movement of the leaf 28
and the cam 34 and the dropping of leaf 2S oif
the rail at its ends provides the snap action de
20 sired.
Switching
clearance between the contact leaves.
U!
If desired, the contact leaves 32 may be pro
vided with rollers thereon, so that the collector
may be rolled along the duct, as a trolley; in
such a case, the upper and lower edges of the
cam may be relied upon to restrain up and down
movement 01’ the collector in the duct and for
this purpose may be provided with horizontally
axled rollers; and the side edges of contact sup
porting posts 30 may be relied upon to restrain
sidewise shifting ,1’ the collector in the duct and
for this purpose may be provided with vertically
axled rollers.
Modi?cation
The collector of Figs. 1-8 is shown as of the
cord terminal type; if desired, it may be formed
as a receptacle (Fig. 9) in which case the cap
I20 will have disposed therein, in a manner so as
its ends, with a notch 310 into which may drop
a leaf 29 to de?ne a position in which the con
to be rotatable therein, an insulation block I2I
having slots I22 for the reception of contacts I23
tact leaves 32, though spread apart su?iciently
20 so that leaf 29 moves from notch 31a to the
right end of rail 31 (Fig. 3), and back, snap
switching action may be e?ected, to make or
break contact, all without removing the col
lector from the duct.
On the under side of the plate 24 are binding
screws 38 threaded into terminals 38a integral
physically and electrically connected to the
terminals integral with the contact supporting
pins 3I by the binding screws 38, which contacts
I23 may be engaged by prongs I24 of a cap plug
I25 entered into the slots I22.
We claim:
1. A detachable collector for use with tubular
bus duct whose bottom wall is provided with a
narrow slot on opposite sides of which are lat—
terminals of conductors passed through the cen
tral aperture 39 of the cap may be electrically
and physically connected to the contact leaves
erally spaced bus bars to be engaged by contacts
of the collector comprising a carrier, contacts on
the carrier in the form of elongated strips dis
posed alongside each other, and means separate
from the carrier and having a portion insertable
into the duct through the slot and operatively
tained within the enclosed space between the
cap 20 and the plate 24 and are thus shielded.
be manually movable with respect to the carrier,
for controlling the relative position of the con
with the contact mounting pins 3| whereby
40 32; the terminals and binding means are con
Operation
When the collector is to be associated with a
duct, the cap 20 and the parts keyed thereto,
namely post 28, leaves 29, and cam 34 are posi
tioned with respect to the plate 24 so that the
contact leaves 32 are as close together as pos
sible; then the contact leaves, the cam and the
contact supporting posts 33 are thrust into the
duct through the slot thereof until the lower
stops 40 of the posts abut against beads H of
the duct bottom. Thereafter, the cap 20 ‘may be
55 grasped from the outside and rotated with re
spect to the plate 24, which is held against rota
tion by the engagement of the contact support
ing posts 30 with the edges of the slot of the
duct; rotation of the cap 20 causes rotation of
60 the cam 34 and spreads the contact leaves 32 so
that these engage the exposed stripes of the bus
bars. The proportions of the parts are such that
such engagement causes a friction or clamp lock
between the collector and the duct with the con
tact leaves 32 in contact making position; this
alone, or as supplemented by the engagement 0!
the lower edges of cam 34 with the edges of the
duct slot will prevent the collector from drop
ping out of the duct.
It is observed that the marginal edge of the
70
cap is spaced axially from the stop 40 a consid
75
duct as well as a spreader, and insures adequate
If desired, the rail 31 may be provided, between
to prevent removal of the collector from the
duct, will be remote from the bus bars I4 and
out of engagement therewith. By rotating cap
30
It is also observed that when the collector has
its parts in contact making position that the
camming plate forms a transverse barrier in the
erable distance so that the collector may be as
sociated with the duct at any point thereof, even
at points where there are coupler sleeves, doors,
etc., in the bottom wall of the duct.
connected to the contacts and so mounted as to 40
tacts, these, in one position, being su?lciently
separated to engage the bus bars, and in another
position, sufficiently drawn towards each other
to be insertable into the duct through the slot,
the means having a portion which remains out
side of the duct when the ?rst mentioned por
tion is inserted into the duct whereby manipu
lation of the first mentioned portion may be ef 50
fected from outside the duct, carrier and the
means being physically associated and movably
interconnected to form a unitary collector.
2. A detachable collector for use with tubular
bus duct whose bottom wall is provided with a
narrow slot on opposite sides otwhich are lat
erally spaced bus bars to be engaged by contacts
of the collector comprising a carrier, contacts on
the carrier in the form oir elongated strips dis
posed alongside each other, and means separate (30
from the carrier and having a portion insertable
into the duct through the slot and operatively
connected to the contacts and so mounted as to be
manually movable with respect to the carrier, for
controlling the relative position of the contacts,
these, in one position, being su?lciently separated
to engage the bus bars, and in another position,
su?iciently drawn towards each other to be in
sertable into the duct through the slot, the means
having a portion which remains outside of the
duct when the ?rst mentioned portion is inserted
into the duct whereby manipulation of the ?rst
mentioned portion may be e?ected from outside
the duct, the carrier and the means being phys 75
'
2,134,758
ically associated and movably interconnected to
form a unitary collector, the two portions of the
means being journalled on the carrier so that
manipulation of the means is accomplished by
rotation of the second mentioned portion of the
means.
.
3. A detachable collector comprising a carrier
having spaced aligned posts projecting upwardly
therefrom, parallel contact leaves pivotally con
10 nected to the posts on axes parallel to those of
the posts and extending from their pivotal mount
ings in opposite directions transverse to the axes
of their pivotal mountings, a cam between the
posts and projecting upwardly from the carrier
and journalled with respect thereto and opera
tively connected to the contact leaves so as to
control their relative position, these, in one posi
tion, being spread apart a considerable distance
when the cam is rotated in one direction, and
20 when in another position drawn close together
when the cam is rotated in the opposite direction.
4. A detachable collector comprising a carrier
having spaced aligned posts projecting upwardly
therefrom, parallel contact leaves pivotally con
nected to the posts on axes parallel to those of
the posts and extending from their pivotal
mountings in opposite directions transverse to
the axes of their pivotal mountings, a cam be
tween the posts and projecting upwardly from
the carrier and journalled with respect thereto
and operatively connected to the contact leaves
so as to control their relative position, these, in
one position, being spread apart a considerable
distancewhen the cam is rotated in one direc
tion, and when in another position drawn close
together when the cam is rotated in the opposite
direction, and means below the carrier and keyed
to the cam so as to form a manipulating handle
for the cam.
40
}
5. A detachable collector comprising a carrier
having spaced aligned posts projecting upward
ly therefrom, parallel contact leaves pivotally
connected to the posts on axes parallel to those
of the posts and extending from their pivotal
mountings in opposite directions transverse to
45 the axes of their pivotal mountings, a cam be
tween the posts and projecting upwardly from
the carrier and journalled with respect thereto
and operatively connected to the contact leaves
55
so as to control their relative position, these, in
one position, being spread apart a considerable
distance when the cam is rotated in one direction,
and when in another position drawn close to
gether when the cam is rotated in the opposite
direction, and means below the carrier and keyed
to the cam so as to form a manipulating handle
for the cam, and forming with it an enclosed or
shielded space in which may be disposed con
nections between branch circuit conductor ter
60 minals and the contact leaves.
6. A detachable collector comprising a carrier
having spaced aligned posts projecting upwardly
therefrom, parallel contact leaves pivotally con
nected to the posts on axes parallel to those‘ of
the posts and extending from their pivotal
mountings in opposite directions transverse to
the axes of their pivotal mountings, a cam be
tween the posts and projecting upwardly from
the carrier and journalled with respect thereto
and operatively connected to the contact leaves
so as to control their relative position, these, in
one position, being spread apart a considerable
3
direction, and means below the carrier and keyed
to the cam so as to form a manipulating handle
for the cam, the means and the carrier being
rotatably and detachably interlocked, with one
part being in the nature of a container and the
other part forming a container closure.
, '7. A detachable collector for use with tubular
duct one of whose walls is provided with a narrow
slot on opposite sides of which are laterally spaced
surfaces to be engaged by engaging parts of the 10
collector, the spacing of the surfaces exceeding
the width of the slot, comprising a carrier, parts
on the carrier in the form of elongated strips
disposed alongside each other, and means sep
arate from the carrier and having a portion in 15
sertable into the duct through the slot and op
eratively connected to the parts and so mounted
as to be manually movable with respect to the
carrier for controlling the relative position of the
parts, these, in one position, being su?lciently 20
separated to engage the duct surfaces afore
mentioned, and, in another position, sufficiently
drawn towards each other to be insertable into
the duct through the. slot, the means having a
portion which remains outside of the duct when
the ?rst mentioned portion is inserted into the
duct whereby manipulation of the ?rst mentioned
portion may be effected from outside the duct,
the carrier and the means being physically as
sociated and movably interconnected to form a 30
unitary collector, the collector being supported
in the duct by the disposition of the slotted wall
of the duct between the carrier and the means.
8. A detachable collector for use with tubular
duct one of whose walls is provided with a narrow 35
slot on opposite sides of which are laterally
spaced surfaces to be engaged by engaging parts’
of the collector, the spacing of the surfaces ex
ceeding the width of the slot, comprising a car
rier, parts on the carrier in the form of elon
means separate from the carrier and having a
portion insertable into the duct through the slot
and operatively connected to the parts and so
mounted as to be manually movable with respect 45
to the carrier for controlling the relative position
of the parts, these, in one position, being sum
ciently separated to engage the duct surfaces
aforementioned, and, in another position, su?l
ciently drawn towards each other to be insertable
into the duct through the slot, the means having
a portion which remains outside of the duct when ,
the ?rst mentioned portion is inserted into the
duct whereby manipulation of the ?rst mentioned
portion may be effected from outside the duct, the 55
carrier and the means being physically asso
ciated and movably interconnected to form a
unitary collector, the means supporting the col
lector from the duct when suspended therefrom
withthe slotted wall thereof forming the bottom 60
thereof.
9. A detachable collector for use with tubular
bus duct whose bottom wall is provided with a
narrow slot on opposite sides of which are lat
erally spaced bus bars to be engaged by contacts 65
of the collector comprising a carrier, contacts on
the carrier in the form of elongated strips dis
posed alongside each other, and means separate
from the carrier and having a portion insertable
into the duct through the slot and operatively 70
connected to the contacts and so mounted as to
be manually movable with respect to the carrier
distance when the cam is rotated in one direc- / for controlling the relative position of the con
75
tion, and when in another position drawn close
together when the cam is rotated in the opposite
40
gated strips disposed alongside each other, and
tacts, these, in one position, being sumciently
separated to engage the has bars, and in another 75
4
2,134,753
position, suf?ciently drawn towards each other
to be insertable into the duct through the slot,
the means having a portion which remains out
side of the duct when the ?rst mentioned portion
is inserted into the duct whereby manipulation of
the ?rst mentioned portion may be eifected from
outside the duct, the carrier and the means being
physically associated and movably intercon
nected to form a unitary collector, the collector
being supported in the duct by the disposition of
the slotted wall of the duct between the carrier
and the means.
10. A detachable collector for use with tubular
bus duct whose bottom wall is provided with a
narrow slot on opposite sides of which are lat
erally spaced bus bars to be engaged by contacts
of the collector comprising a carrier, contacts on
the carrier in the form of elongated strips dis
posed alongside each other, and means separate
20 from the carrier and having a portion insertable
into the duct through the slot and operatively
connected to the contacts and so mounted as to
be manually movable with respect to the carrier
for controlling the relative position of the con
tacts, these, in one position, being sufficiently
separated to engage the bus bars, and in another
position, sufficiently drawn towards each other
to be insertable into the duct through the slot,
the means having a portion which remains out—
side of the duct when the ?rst mentioned portion
is inserted into the duct whereby manipulation
of the ?rst mentioned portion may be effected
from outside the duct, the carrier and the means
drawn towards each other to be insertable into
the duct through the slot, the means having a
portion which remains outside of the duct when
the ?rst mentioned portion is inserted into the
duct whereby manipulation of the ?rst mentioned
portion may be effected from outside the duct, the
carrier and the means being physically associated
and movably interconnected to form a unitary
collector, the carrier and the means aforesaid
having cooperating formations which cooperate
10
to index the means to the carrier in any one
of three positions, in one of which the contacts
are separated to engage the bus bars, in one of
which the contacts are close together to be free
of the bus bars and permit their insertion into or
their withdrawal from the duct, and in an inter
mediate one of which the contacts are close
enough together to be free of the bus bars but are
so separated as to prevent their withdrawal from
the duct.
13. A detachable collector for use with tubular
duct one of whose walls is provided with a nar~
row slot on opposite sides of which are laterally
spaced surfaces to be engaged by engaging parts
of the collector, the spacing of the surfaces er;
cceding the Width of the slot, comprising a car
rier for the parts, and means separate from the
carrier and having a portion insertable into the
duct through the slot and operatively connected
to the parts and so mounted as to be manually
movable with respect to the carrier for control
ling the relative position of the parts, these, in one
position, being sufficiently separated to engage
being physically associated and movably inter
the duct surfaces aforementioned, and, in an
connected to form a unitary collector, the means
other position, su?iciently drawn towards each 35
other to be insertable into the duct through the
slot, the means having a portion which remains
supporting the collector from the duct when
suspended therefrom with the slotted wall there
of forming the bottom thereof.
11. A detachable collector for use with tubular
duct one of whose walls is provided with a narrow
slot on opposite sides of which are laterally spaced
surfaces to be engaged by engaging parts of the
collector, the spacing of the surfaces exceeding
the width of the slot, comprising a carrier, parts
on the carrier in the form of elongated strips
disposed alongside each other, and means sep
arate from the carrier and having a portion in
sertable into the duct through the slot and op
reratively connected to the parts and so mounted
50 as to be manually movable with respect to the
carrier for controlling the relative position of the
parts, these, in one position, being sui?ciently
separated to engage the duct surfaces aforemen~
outside of the duct when the ?rst mentioned por
tion is inserted into the duct whereby manipula
tion of the ?rst mentioned portion may be e?ect 40
ed from outside the duct, the carrier and the
means being physically associated and movably
interconnected to form a unitary collector, the
two portions of the means being separate and so
formed that the portion of the means outside of 4 5
the duct forms a cup closed by the carrier which
in turn forms a plate-bearing for the duct-re
ceived portion of the means.
14. A detachable collector for use with tubular
duct one of whose walls is provided with a narrow
slot on opposite sides of which are laterally spaced
surfaces to be engaged by engaging parts of the
collector, the spacing of the surfaces exceeding
tioned, and, in another position, su?iciently drawn
the width of the slot, comprising a carrier for the
towards each other to be insertable into the duct
through the slot, the means having a portion
which remains outside of the duct when the ?rst
mentioned portion is inserted into the duct where
parts, and means separate from the carrier and ,
by manipulationof the ?rst mentioned portion may
60 be effected from outside the duct, the carrier and
the means being physically associated and mov
ably interconnected to form a unitary collector.
12. A detachable collector for use with tubular
bus duct whose bottom wall is provided with a
narrow slot on opposite sides of which are lat
erally spaced bus bars to be engaged by contacts
of the collector comprising a carrier for the con
tacts, and means separate from the carrier and
having a portion insertable into the duct through
70 the slot and operatively connected to the con
tacts and so mounted as to be manually movable
with respect to the carrier for controlling the
relative position of the contacts, these, in one
position, being su?iciently separated to engage
75 the bus bars, and in another position, sufficiently
having a portion insertable into the duct through
the slot and operatively connected to the parts
and so mounted as to be manually movable with
respect to the carrier for controlling the relative
position of the parts, these, in one position, being
su?iciently separated to engage the duct surfaces
aforementioned, and, in another position, su?i
ciently drawn towards each other to be insertable
into the duct through the slot, the means having
a portion which remains outside of the duct 65
when the first mentioned portion is inserted into
the duct whereby manipulation of the ?rst men—
tioned portion may be effected from outside the
duct, the carrier and the means being physically
associated and movably interconnected to form a
unitary collector, the two portions of the means
being separate and so formed that the portion
of the means outside of the duct forms a cup
closed by the carrier which in turn forms a plate
bearing for the duct-received portion of the
2, 184,753
duct one of whose walls is provided with a narrow
arate and move towards and engage the bus bars,
such movement of the leaves being in paths trans
verse to the direction of their insertion into the
slot and transverse to the direction in'which they
extend from their mounting points when they are
slot on opposite sides of which are-laterally spaced
being inserted into the duct through the slot, and
means, and formations on the cup and the plate
'for detachably interlocking and intersecuring
them mutually.
15. A detachable collector for use with tubular
in
5
surfaces to be engaged by engaging parts of the‘ conductors connected to said leaves through their
collector, the spacing of the surfaces exceeding mounting points.
the width of the slot, comprising a carrier for
10 the parts, and means separate from the carrier
and having a portion insertable into the duct
through the slot and operatively connected to
the parts and so mounted as to be manually mov
, able with respect to the carrier for controlling
the relative position of the parts, these, in one
position, being suiiiciently separated to engage the
duct surfaces aforementioned, and, in another
position, su?iciently drawn towards each other
to be insertable into the duct through the slot,
20 the means having a portion which remains outside
of the duct when the ?rst mentioned portion is
inserted into the duct whereby manipulation of
the ?rst mentioned portion may be effected from
outside the duct, the carrier and the means being
25 physically associated and movably interconnected
to form a unitary collector, the two portions of
the means being separate and so formed that the
portion of the means outside of the duct forms a
cup closed by the carrier which in turn forms a
30 plate-bearing for the duct received portion of the
means, and formations on the cup and the plate
for detachably interlocking and intersecuring
them mutually, and resilient means for restrain
‘ing relative separation of the cup and plate.
16. A detachable collector for use with tubular‘
35
elongated duct one of whose walls is provided
with a narrow elongated slot on opposite sides of
which are laterally spaced elongated bus bars to
I; ‘,be engaged by contacts of the collector, the spac
40 ing of the bus bars exceeding the width of the
" slot, comprising a carrier, elongated contact
leaves mounted thereon and insertable into the
duct through the slot and extendng from their
mounting points in a direction transverse to the
direction in which they are inserted into the slot,
means normally holding the leaves together so
that their aggregate spread is less than the width
of the slot whereby they may be inserted into the
duct through the slot, the means being manip
ulable outside the duct and after the leaves have
been inserted thereinto to cause the leaves to sep
arate and move towards and engage the bus bars,
such movement of the leaves being in paths
transverse to-the direction of their insertion into
55 the slot and transverse to the direction in which
they extend from their mounting points when
they are being inserted into the duct through the
slot.
»
17. A_ detachable collector for use with tubular
60 elongated duct one of whose walls is provided with
a narrow elongated slot. on opposite sides of
which are laterally spaced elongated bus bars to
be engaged by contacts of the collector, the spac
ing of the bus bars exceeding the width of the
65 slot, comprising a carrier, elongated contact
leaves mounted thereon and insertable into the
duct through the slot and extending from their
mounting points in a direction transverse to the
direction in which they are inserted into the slot,
means normally holding the leaves together so
that their aggregate spread is less than the width
of the, slot whereby they may be inserted into the
duct through the slot, the means being manip
18. A detachable collector for use with tubular
duct one of whose walls is provided with a nar
row slot on opposite sides of which are laterally
in
spaced surfaces to be engaged by engaging parts
of the collector, the spacing of the surfaces ex
ceeding the width of the slot, comprising a car
rier for the parts, and means separate from the 15
carrier and having a portion insertable into the
duct through the slot and operatively connected
to the parts and so mounted as to be manually
movable with respect to the carrier for control
ling the relative position of the parts, separated 20
to engage the bus bars, or drawn towards each
other to be insertable into the duct through the
slot, the means having a portion which remains
outsideof the duct when the ?rst mentioned por
tion is inserted into the duct whereby manipula 25
tion of the ?rst mentioned portion may be e?ect
ed from outside the duct, the carrier and the
means being physically associated and movably
interconnected to form a unitary collector, the
two portions of the means being separate and so
formed that the portion of the means outside of
the duct forms a cup closed by the carrier which
in turn forms a‘ plate-bearing for the duct
received portion of the means, the two portions
of the‘means being journalled on the carrier so 35
that manipulation of the means is accomplished
by rotation of the second mentioned portion of
the means.
19. ”A detachable collector comprising a carrier
having spaced aligned posts projecting upwardly
40
therefrom, parallel contact leaves pivotally con
nected to the posts on axes parallel to those of
the posts and extending from their pivotal
mountings in opposite directions transverse to
the axes of their pivotal mountings, a cam be
45
tween the posts and projecting upwardly from
the carrier and journalled with respect thereto
and operatively connected to the contact leaves
so as to control their relative position, spread
apart when the cam is rotated in one direction, 50
and drawn together when the cam is rotated in
the opposite direction, and means below the car
rier and keyed to the cam so as to/form a ma.
nipulating handle for the cam, the means and
the cam being detachably interlocked, and with 55
the means forming a journal for" the carrier which
in turn forms a support for the cam.
20. A detachable collector for use with tubu
lar duct one of whose walls is provided with a
narrow slot on opposite sides of which are later 60
ally‘ spaced surfaces to be engaged by engaging
parts of the collector, the spacing of the surfaces
exceeding the width of the slot, comprising a car
rier for the parts, and means separate from the
carrier and having a portion insertable into the 65
duct through the slot and operatively connected
to the parts and so mounted as to be manually
movable with respect to the carrier for control
ling the relative position of the parts, separated
to engage the bus bars, or drawn towards each 70
other to be insertable into the duct through the
slot, and means having ‘a portion which remains
outside of the duct when the ?rst mentioned por- -
tion is inserted into the duct whereby manipula
76 been inserted thereinto to cause the leaves to sep- ' tion of the ?rst mentioned portion may be ef 75
ulable outside the duct and after the leaves have
6
2,134,753
fected from outside the duct, the carrier and
the means being physically associated and mov
ably interconnected to form a unitary collector,
the two portions of the means being separate and
sertable into the duct through the slot and op
so formed that the portion of the means outside
of the duct forms a cup closed by the carrier
which in turn forms a plate-bearing for the duct
received portion of the means, the two portions
of the means being journalled on the carrier so
the contacts, these, in one position, being su?i~
ciently separated to engage the bus bars, and
10 that manipulation of the means is accomplished
by rotation of the second mentioned portion of
the means, and a resilient element resiliently
holding the ?rst mentioned portion of the means
and the carrier in assembly, relatively rotatable,
and interlocking the two portions of the means
so that they rotate together around the carrier,
and also holding the means and the carrier in
assembly, relatively rotatable.
21. A detachable collector comprising a car
rier having aligned posts projecting upwardly
therefrom, parallel contact leaves pivotally con
nected to the posts on axes parallel to those of
the posts and extending from their pivotal
mountings in opposite directions transverse to
the axes of their pivotal mountings, a cam be
tween the posts and projecting upwardly from
the carrier and journalled with respect thereto
and operatively connected to the contact leaves so
as to control their relative position, spread apart
30 when the cam is rotated in one direction, and
drawn together when the cam is rotated in the
opposite direction, and means below the carrier
and keyed to the cam so as to form a manipulat
ing handle for the cam, the means and the cam
35 being
detachably interlocked, and with the
means forming a journal for the carrier which
in turn forms a support for the cam, and a re
silient element resiliently holding the cam and
the carrier in assembly, relatively rotatable, and
40 interlocking the cam and the means to rotate
together around the carrier, and also holding the
means, the cam, and the carrier in assembly,
with the means and the cam not relatively rotat—
able and with the means-cam and the carrier
relatively rotatable.
22. A detachable collector for use with tubular
bus duct whose bottom wall is provided with a
narrow slot on opposite sides of which are later
ally spaced bus bars to be engaged by contacts
of the collector comprising a carrier, contacts
on the carrier in the form of elongated strips
disposed alongside each other, and means sepa‘
rate from the carrier and having a portion in
eratively connected to the contacts and so mount—
ed as to be manually movable with respect to the
carrier for controlling the relative position of
in another position, su?iciently drawn towards
each other to be insertable into the duct through
the slot, and means having a portion which re
mains outside of the duct when the ?rst men
tioned portion is inserted into the duct whereby
manipulation of the ?rst mentioned portion may
be e?'ected from outside the duct, the carrier
and the means being physically associated and
movably interconnected to form a unitary col~
lector, the ?rst mentioned portion being so pro
portioned that it straddles the slot when the
contacts are separated, whereby said portion in
terlocks the collector to the duct.
23. A detachable collector for use with tubular
duct one of whose walls is provided with a nar
row slot on opposite sides of which are laterally
spaced surfaces to be engaged by engaging parts
of the collector, the spacing of the surfaces ex—
ceeding the width of the slot, comprising a car 25
rier, parts on the carrier in the form of elon
gated strips disposed alongside each other, and
means separate from the carrier and having a
portion insertable into the duct through the slot
and operatively connected to the parts and so 30
mounted as to be manually movable with respect
to the carrier for controlling the relative position
of the parts, these, in one position, being suffi
ciently separated to engage the duct surfaces
aforementioned, and, in another position, su?l
ciently drawn towards each other to be insertable
into the duct through the slot, the means having
a portion which remains outside of the duct
when the ?rst mentioned portion is inserted into
the duct whereby manipulation of the ?rst men 40
tioned portion may be effected from outside the
duct, the carrier and the means being physical~
ly associated and movably interconnected to form
a unitary collector, the collector being supported
in the duct by the disposition of the slotted wall
of the duct between the carrier and the means,
the ?rst mentioned portion being so proportioned
that it straddles the slot when the aforemen
tioned parts are separated, whereby said por~
tion interlocks the collector to the duct.
50
LYMAN C. FISHER.
WILLIAM H. FRANK.
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