close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2410253

код для вставки
- Oct 29, 1946.
»
2,419,253
A. M. TROGNER l
OPERATING MECHANISM FOR ELECTRICAL SWITCHES
Filed Aug. 2, 1940
6 Sheets-Sheet i-
Oct. 29, 1946.
A. M'. TROGNER
2,410,253
OPERATING MECHANISM FOR ELECTRICAL SWITCHES
Filed Aug. 2 1
1940
'6 Sheets-Sheet 2
I
m
H
1u
,
m
l Am@
-V
Hm, .Í
f
/
-. ,
a/.êél/,.eâg/é„êBÈ
èlâïÉê.¿ws/êÉâ.
w.
INVENFOR
AUORNEY.
Oct. 29, 1946.
A. M. TROGNER
2,410,253
O‘PERATING MECHANISM FOR ELECTRICAL SWITCHES
Filed Aug. 2;l 1940
e sheets-sheet s
é.
,@ÈÉ_,¿5.%
BY
uw@
l
ATTORNEY. `
Cet. 29, 1946.
2,410,253
A. M. TROGNER
OPERATING `MEGHANISM yFOR _ ELECTRICAL `SWITCHES
Filed Aug. 2, 1940
„Zz f4
180
183 182
\|
14
73 1"
6 Shéets-Sheet 4
:sa
/
179
96
H/
'/0/
72
118
` 191
ATTORNEY.
Oct. 29, 1946.
2,410,253
-A. M. TROGNER
‘ OPERATING MECHÁNISM FOR ELECTRICAL SWITCHES
Filed Aug.' 2, 1940'
6 Sheets-Sheet 5
mM
.103
105’
1
u
1
\
Y
oB
á
INVENTOR
ATTORNEY.
Oct. 29, 1946.l
A. M. TROYGNEÁR
2,410,253
OPERATING MECHANISM FOR ELECTRICAL SWITCHES
Filed Aug. 2, 1940
6 Sheets-Sheet 6
7
l'
555
6a
1
55
Y
57”
INVENTOR.
¿if 13
BY
'
ATTORNEY
Patented Oct. 29, 1946
2,410,253
UNITED STATES PATENT CFFICE
2,410,253
OPERATING MECHANISM FOR ELECTRICAL
SWITCHES
»
Arthur M. '1`rogner, East Stroudsburg, Pa., as
signor to Line Material Company, Milwaukee,
Wis., a corporation of Delaware
Application August 2, 1940, Serial No. 350,036
16 Claims.
1
(Cl. 185-40)
2
.
This invention relates to improvements in op
Throughout the several views like parts are
erating mechanism for electrical switches.
identiiied by the same reference characters.
The primary object of this invention is to pro
An embodiment of my invention, shown in Fig.
vide for an electrical switch, power operated
1, comprises a. gang switch designated in its
mechanism for alternately opening and closing 5 entirety by the letter G, switch operating mech
the switch, such mechanism being controlled at
anism enclosed in a housing and designated gen
a point remote from the switch.
erally by the letter H, and a rotatable shaft I con
Another object is to provide power operated
necting the switch operating mechanism and the
mechanism including stored energy means con
switch. -As indicated, the switch G is mounted
trolled by releasable locking mechanism which is
on the upper end of the pole I and the switch
10
operative to stop the power operated mechanism
operating mechanism H is mounted on the pole
upon the completion of each switch opening and
I below the switch, the shaft I extending ver
closing movement.
tically of the pole.
It is also an object to provide power operated
mechanism in which the stored energy means 15
Gang switch mechanism
may be reset after utilization of the energy dur
ing switch operation, the resetting of the stored
'I'he illustrated switch G is of the so-called gang
energy means being controllable at a point re
type wherein three electric lines of a three phase
mote from the mechanism.
circuit are simultaneously interrupted when the
More specifically, it is an object to provide 20 switch is operated. However, it will be under
switch operating means which may be manually
stood that I do not limit the use of this inven
or mechanically operated and including stored
tion to a three phase circuit, since obviously it
energy means which may be released at the will
may, if desired, be utilized in connection with a
single electric line as well -as a plurality of lines.
o1' the attending workman, which willv auto
matically cease to deliver power upon comple 25
The illustrated switch »comprises a pair of ver
tion of each cycle of switch opening or closing
.tical insulating bars 2 and 3 which are substan
tially parallel and rotatably supported at oppo
movement, and which may be operated to secure
its maximum store of energy, the storing opera
site ends by means of the L-shaped brackets 4
tions automatically ceasing when the maximum
and 5 secured to the pole in a suitable manner
as by bolts 6 extending through the pole I. Suit
is reached.
30
1n the drawings:
'
able bracing members 'I are provided on each
bracket 4 and 5 adapted to hold vthe brackets
substantially rigidly in position and secured to
the bracket by means of bolts 8.
The insulating bar 2 supports three cylindrical
Fig. 1 is a View in front elevation of an em
bodiment of my invention mounted on a pole. It
will be understood that this ñgure is diagram
matic rather than detailed.
Fig. 2 is an enlarged sectional view in front
elevation of the switch operating device shown
insulators 9, I0, and II in vertically spaced rela
tion. Similarly, the insulating bar 3 is provided
in Fig. 1 and taken on the line 2--2 of Fig. 3.
with three insulators, only one of which is shown
Fig. 3 is an enlarged sectional View in side ele
at I2 in Fig. 10. Each insulator 9, I0, II, and
vation of the switch operating device shown in 40 I2 is secured to its respective bar by means of
brackets I3, bolts I4, and plates I5.
Fig. 1 and taken on the line 3-3 of Fig. 2.
Fig. 4 is an enlarged sectional view in top plan
Each of the insulators I2 on the bar 3 (see Fig.
10) is provided at its outer end with a bracket
view of the switch operating device shown in Fig.
1 and taken on the line 4-4 of Fig. 2.
I 6 including an angle portion I'I and terminal
portion I8. Mounted on the angle portion I‘I is
Figs. 5, 6, and 7 are enlarged detail views, part
a pair of parallel switch blades I9, the upper ends
ly in section, of portions of the control mecha
nism for the switch operating device.
of which are shown projecting above the insu
lators 9, I0, and II in Fig. 1.
Fig. 8 is a diagrammatic View of an electric
circuit for releasing .the switch operating mecha
Each of the insulators 9, I 0, and II on the bar
nism.
50 2, is provided with a bracket 20 at its outer end
including a terminal portion 2I and a blade
Fig. 9 is a diagrammatic view of an electric cir
mounting portion 22. Secured to the mounting
cuit for controlling the resetting of vthe switch
operating mechanism.
Fig. 10 is an enlarged detail view of the switch
shown in Fig. 1 and taken on the line Ill-_I0 of
Fig. 1.
Figs. l1, 12, and 13 are enlarged detail views
partly in section of the switch operating lever
mechanism.
Figs. 11 and 12 are »taken on the
line II--II of Fig. 1.
so
portion 22 is a single switch blade 23 which ex
tends between and contacts with the blades I9
on the insulators I2, as indicated in Fig. 1.
The conductors 25 and 26 are respectively dead
ended in insulator strings 21 and 28 which are
mounted on .the pole I by means of eye bolts 29.
The conductor 26 is electrically connected by
means of a ñexible wire 39 connected to the con
:2,410,253
3
4
ductor at 3| and to the terminal portion I8 on
the switch. The conductor 25 is connected (not
shown) to the flexible wire 32 in a similar Inan
ner to that illustrated at 3| and to the terminal
of the oamming groove 52 on the lever arm 40.
As this movement continues, thc lever arm 43 is
caused to move to the position shown in Fig. 12.
Since the arm 49 is connected to the arm 4|, the
portion 2| on the switch.
arm el is caused, by the movement of the arm
to move to the position shown in Fig. 12.
It will be obvious that when the switch G is
If rotation of the shaft I continues through
380 degrees, the camming roller v55 will be car
ried past the position shown in Fig. 12 and back
to the position shown in Fig. 11. In such case,
in the position shown in Fig. 10 the conductors
25
2S are electrically connected through the
flexible wires 3S and 32 and the switch blades |9
and 23. The broken lines 35 indicate the closed
position of the switch G and the broken lines 36
indicate the open position of the switch. As will
the roller
will move over the surface of the
carnming groove
on the levei1 4| and thereby
canse the arms 4E and 4l to move from the posi
be more fully described hereafter, the insulating
tions shown in
12 to the positions shown in
Fig. l1.
As previously stated, the insulating bars 2 and
S are respectively rotatable with the arms 4| and
and consequently assume -the positions shown
bars 2 and 3 are rotated simultaneously in oppiom
site directions, thus alternately opening and clos
ing the switch.
It will be understood that Fig. 10 shows the
uppermost line wire arrangement of the Fig. 1
isclcsurc. Since the intermediate line wiresl pc
'
when the switch is closed and the posi
12 when the switch is open.
sitioned at 31 in Fig. 1 and the lowermost line 20 tions shown in
1t will be apparent that to operato the switch it
wires positioned at 3G in Fig. l are connected in
is necessary to always rotate the shaft I in a
a manner identical to that shown in Fig. l0, itis
unnecessary to duplicate the illustration.
counter~clo~ .avise direction. Therefore, as will be
hereafter fully disclosed, mechanism is provided
Figs. il, 12, and 13 illustrate a novel link and
for rotating the shaft I in one direction only and
shaft connection for operating the switch. The
link mechanism is designated generally by the
preventing accidental rotation in the opposite
direction.
letter K and its position in Fig. 1 is similarly in
dicated. The insulating bars 2 and 3 are indi
cated by means of broken lines.
As indicated, the link mechanism K. is carried
on the upper side of the bracket 5 and comprises
Switch operating> mechanism
3, and e show the switch operating
mechanism interiorly of the casing 1D of the
a pair of lever arms 49 and 4| and pivotally con
mechanism denoted at H in
l. As indicated
in Fig. 3, the casing is provided on one side with
nected respectively at 42 and 43 with a link 44.
The lever arms 49 and 4| are respectively sock
eted in the bracket 5 at 45 and 46 for rotation on
bearing means 41, such as ball bearings (not
shown). The bearing means 41 is retained in po~
sition by means of a shank 4B projecting through.
the bracket 5 and engaged by a collar 49 and pin
59. Each of the lever arms 4D and 4| is pro
vided with a cross-like wedge portion y5I concen
trically related to the sockets 45 and 46 and re
a removable cover “il having handles 12 and on
the opposite side with a similar removable cover
13 having handles 14. Fig. 1 shows the cover 1|.
spectively engaged with the insulating bars 3 and
2 to produce rotation thereof with the lever arms
40 and 4|.
The lever arms 45 and 4| as illustrated are
identical and each is provided with a camming
groove 52. Midway between the sockets 45 and
45, a camming arm 53 is rotatably mounted by
means of a stub shaft 54. The outer camming
end of the arm 53 is provided with roller 55
mounted on pin 56 for alternate engagement with
-the camming grooves 52 on the lever arms 49 and
4 |. rl‘he stub shaft '54 which constitutes a part of
L)
Each of the covers slides at the upper end into
a channel formed by 'the angle irons 15 secured
to the top of the casing and is supported at the
lower end by means of a T-bar 16 secured to the
bottom of the casing.
The tube
of the shaft I is connected at its
lower end to a coupling device 11 immediately
above the casing 19 and may be of any suitable
arrangement adapted to allow for slight misalign
ment of the shaft I and shaft
coupling is attached.
to wld i the
Detail of the co` rin , '
not sho-wn since such devices are well
the art.
Secured in any suitable manner (not shown)
to the upper end of the division wall
in “ze
casing 1B, is a U-bracket which provides a lr.
39 for the shaft 18 adjacent the tcp of tho c'
and a bearing 55| for the shaft
ed
the shaft I projects into the tube 51, also a part
and below the bearing Bil. Intermot. .. 'e ne
of the shaft I, and is secured for rotation there
ings 6G and 8|, the bracket is provided. \
with by means of pin '59. Additional bearing sur
bearing |32 having its axis normal to the i
face for the stub shaft 54 is provided by means
shaft 1E! supporting one end of the ho
of the sleeve 59 secured to the bracket 5 by means
Shafts 19 and 23 are c
60 shaft
of bolts BU.
means of bevel gears 84 and 953. Shaft f'
t will be apparent that whenever the cam
from the bearing 32 through the divis
ming roller 55 is positioned in either of the po
and the side il@ of the casing iii
-t is jour»
sitions illustrated in Figs. 1l and 12, the switch
naled in the bearing bracket E1 secured to the
will be held in open or closed positions, as the
case may be, by reason of the engagement of 65 outerside of the ‘wall in any suitable manne; <n .
sho-wn). The end |28 of the shaft 83 projects
the camming roller with the lever arms 40 and
beyond the bearing bracket 81 and is provided
4|, as shown. Figs. l1 and 13 indicate the closed
with a socket (not shown) for receiving a hand
position of the switch and Fig. 12 the open po
crank (not shown). Thus the shaft may be man
sìticn. `
The switch is operated by always rotating the 70 ually rotated in a counter-clockwise direction
relative to Fig. 4 and by reason of its connection
shaft I in a counter-clockwise direction relative
with shaft I produce a similar rotation of the
to Figs. 11 and 12. Assuming that the switch is
camming roller 55 relative to Figs. 11 and 12.
in closed position, as indicated in Fig. 11, then to
The projecting end 88 of the shaft 831s housed
open the switch the shaft I is rotated to cause
the camming roller 55 to move over the surface 75 by cover 89, hub 9i) and can 9| which is threaded
2,410,253
6
5
This finger is disposed in the path vof movement
on the hub for removal when it ls desired to man
ually rotate the shaft 83.
of the releasing finger || 6 pivotally carried at
||1 by the lever ||8. A stop ||9 is provided on
Mounted on the shaft 83 is a sleeve 93 which
the lever ||8 for normally holding the finger ||6
is secured thereto for rotation therewith by means
of a key 94 at the flanged end 95 of the sleeve 93. Ul in the position indicated. The lever ||8 is secured
to the shaft |20 which extends through the slot
The sleeve is provided on its outer periphery adja
|2| in the division wall 19.
cent the flanged end 95 with a pair of latching
Upon the opposite side of the wall 19 (see Figs.
lugs 98 disposed on opposite sides of the sleeve
2 and 4) is provided a. U-bracket |22 secured
relative to each other. Fig. 7 shows the detail of
thereto in any suitable manner (not shown) .' The
this construction as viewed from the 'same posi
shaft |20 is journaled for rotation in the U
tion as Fig. 3. The division wall 91 suppo-rts a
bracket arms. Secured to the shaft |20 between
bracket 98 on which is a catch lever 99 pivotally
the U-bracket arms is a lever |23 to the outer
mounted for engagement alternately with the
end of which a pair of parallel links |24 are piv
latching lugs 96 on the sleeve 93. A spring |00
carried by the bracket 98 urges the catch lever 15 otally connected. The lower ends of the links
|24 are pivotally connected with a plunger |25
99 into position for engagement with the lugs
including a solenoid core |26 which extends
95. The lugs 96 are constructed so that the lever
through the base of the U-bracket and the sole
99 will cam thereover when the shaft 83 i's ro
noid winding |21 beneath the bracket |22. The
tated counter-clockwise relative to Fig. 4 and
positively engage the lugs when the shaft 83 tends 20 solenoid winding |21 is supported by the L
bracket |28 which is secured to the division wall
to rotate in a clockwise direction. Thus, it will
19 in any suitable manner (not shown). As in
be apparent that the shaft 83 can rotate in one
dicated in Fig. 2, the L-bracket |28 is provided
direction only and thus prevents inadvertent
with a stop |29 for limiting the downward move
clockwise rotation of the camming roller 55 rela
tive to Figs. 11 and 12. The ratio of the bevel 25 ment of the core |28, the Stop |29 in turn being
provided with a screw |30 for manually varying
gears 84 and 85 is such that 180 degrees of rota
the extent of the downward movement of the
tion of the shaft 83 will produce a like degree of
rotation of the camming roller 55.
core |26.
f
Fig. 8 shows an electric circuit (diagrammati
Releasable Zatching mechanism for the shaft 83
30
In addition to the mechanism previously de
scribed for preventing improper rotation of the
shaft 83, there is also provided releasable latch
cally) for controlling the solenoid |26-|21.
When the switch |3|' closes the circuit through
the solenoid winding |21, the core |26 (Fig. 2)
will be drawn upwardly and through the links
ing mechanism for normally preventing the
|24 and lever |23 to cause the shaft |20 to rotate
in a clockwise direction relative to Figs. 3 and 5.
proper rotation of the shaft.
latching mechanism comprises a pair of lugs |02
on the sleeve 93 and disposed upon opposite sides
thereof relative to each other. (Figs. 5 and 6
show detail of the releasable latching mechanism,
Fig. 5 being viewed from the same position as
Fig. 3 and Fig. 6 being viewed from the same po
|||, causing the toggle to collapse. When the
toggle mechanism has collapsed the lever |03 will
This releasable 35 When the shaft |20 is thus rotated the finger
sition as Fig. 2.)
Normally one or the other of the lugs |02 en
gage the lever |03 which is pivotally mounted
on pin |04 supported by and between the parallel
side bars |05. The bars |05 are spaced by means
of blocks |09 on the ends thereof. The bars |05
and blocks |06 thus in effect comprise a housingV
for the releasable latching mechanism hereafter
more fully described and are secured to the divi 50
sion wall 19 by means of bolts |01. Spacing blocks
|08 are dispo-sed between the wall 19 and housing
for the latching mechanism.
Normally the lever |03 is held against rotation
by means of toggle mechanism comprising a link 55
|09 pivotally connected at I|0 with the lever |03
and at the opposite end with the link || | at I|2.
In turn the link ||| is pivotally mounted on pin
||3 which is supported between and by the bars
|05. As may be seen from Fig. 6, the lever |03 60
is bifurcated toreceive the- link |09 and that the
link ||| is also bifurcated to receive the link |09.
The link |09 is provided with a finger | |4 which
project-s downwardly below the pivot ||2 and en
gages the link l | |. When the finger | |4 thus en
gages the link |||, the axis of the pivot ||2 is
positioned slightly to the right of a plane com
mon to the axes of pivots ||0 and ||3 as viewed
from Fig. 5 or Fig. 2. Thus any pressure trans
||6 will engage the finger ||5 on the toggle link
move out of the path of the lug |02 on the sleeve
93 and free the shaft 83 for counter-clockwise
movement relative to Figs. 2 and 5 and acorre
spending movement of the cam roller relative to
Figs. 11 and 12.
Fig, 2 shows a storage battery I 3| supported
between walls 19 and |32 in any suitable manner
not illustrated. This battery is diagrammatically
shown in the circuit in Fig. 8. For the sake of
clarity, this battery is not shown in Fig. 4.
When the toggle |09-_l || has been b-roken as
indicated, it and the lever |03 will assume the
position illustrated in broken lines in Fig. 5 and
upon rotation of the shaft 83, the lug |02 at the
left of the View will be moved into contact with
the arcuate plate |33. Continued rotation of the
shaft will cause the toggle |09---| || to be reset.
The plate |33 is pivoted at |34 on the link |09‘and
engages the pin |35 which is spring pressed out
wardly against the plate |33 by spring |36, the
pin and spring being socketed in the link |09. A
plug |38 closes one end of the socket. Thus the
lugs may move freely by the plate |33 and into
contact with the latched lever |03 and at the
same time insuring the proper resetting of th
toggle.
~
Stored energy mechanism for automatically
energizing the switch operating mechanism
Mounted on the shaft 83 in the vhousing 10, .is
mitted through the lug |02 on the sleeve 93, tend 70
a clutch member |40 which is held against rota
ing to rotate the lever |03, will be countered by
tion thereon by the key 94, shown in Fig. 4, and is
the toggle mechanism |09---||| and the shaft
splined I4I tothe ñanged end 95 on the sleeve
83 will be held against counter-clockwise motion.
93, as shownin Fig. .2. This clutch member is
It will be noted that the link ||I is provided
slidable on the shaft83 toward the sleeve 93"and
with a iinger |l5 projecting laterally thereof.
2,410,253
7
is normally held in the position indicated by
8
When so rotated the camming clutch jaws |45
clearly shown in Fig. 4 cause the clutch member
ing a substantially uniform application of power
delivered to the shaft 33.
Rewz'f/zdmg mechanism for 'the stored energy
mechanism
It will be obvious from the foregoing dis
closure, that after the gear segment |46 has
moved sufficiently to position the pinion |44 rela
|40 to move axially of the shaft 03 against the
tively at the opposite end of the segment from
means of the coil springs |42, and when in this
position engages the clutch member |43.
Clutch member |43 is secured to the pinion |44
and both are rotatable as a unit in a. clockwise
direction on the shaft 83 as viewed from Fig. 3.
coil springs |42. When the clutch member |43 IO that shown in Fig. 3, it becomes necessary to
and pinion |44 rotate in the opposite direction the
stop further switch operating movement of the
members |43 and |40 positively engage through
segment |40 and to reset the mechanism so that
the jaws |45 and prevent further rotation in that
it may again pass through its cycle of switch
direction relative to the shaft 83.
operations. Accordingly, I have provided what
The pinion |44 meshes with a. gear segment |45
may be referred to as rewinding mechanism
which is mounted on the shaft |41 and has its
which will reset the stored energy means to the
hub |48 secured to the elongated hub |40 in any
position shown in full lines in Fig. 3.
suitable manner such as by spiining |50. The
The rewinding mechanism comprises
arm
shaft |41 is journaled at its ends (not shown) in
|10 integral with the arm 45| on the hub |49 and
bearing bracket 81 and hub |5|A on the division
having a spheroidal roller |1| mounted in the
wall 19. An arm |5| which is an integral part
recessed aree. iig on the arm |10 and rotatable
of the hub |40, extends upwardly therefrom and
on in |713. The roller |1| contacts the cam |14
terminates in a bifurcated end |52 which projects
ng winding operations7 such contact start
over the hub and is provided with a pivot pin |53
ing at ‘the low point |15 on the cam and con
disposed to the right of a vertical plane passing 25 tinuing until the high point |15 on the cam has
through the axis of the hub, as viewed from Fig. 3.
passed the roller lil. The arm £10 is shown
A link |54 is pivot-ally mounted at its upper end
in broken lines in Fig. 3 in which position the
on the pin |53 and extends downwardly past the
roller il! contacts the low point $15 on the cam
hub where it is engaged by coil springs |55. The
i 14, the full line position being the position oi’
lower end of the springs |55 are attached to the 30 the arm after the high point lie on. the cam
bar or swivel plate |56 which is pivoted on trun
has passed the roller |1I.
nions |51 socketed in bearings |53. In the illus
The cam |14 is rotatably mounted on a stub
trated form, there are ten springs |55 which en
shaft (not shown) extending between the divi
gage the link |54, the link having the >form of a
sion wall 0"! and the depending panel |11.
hub
Y as viewed in Fig. 2 and terminating in a bifur
|13 on the cam is splined to the hub |19 on
cated end |59 as clearly shown in Fig. 3.
When the gear segment |45 is in the position
illustrated in Fig. 3, the springs |55 are under
tension and exert a force through the link |54,
arm |5|, and hubs |49 and |40, tending to rotate
the sprocket wheel |80 also rotatable on the stub
shaft (not shown). The sprocket wheel |80 is
connected by a sprocket chain ißl (shown dia
grammatically) which passes over the smaller
sprocket wheel |32. Sprocket wheel |32 is con
nected with the sprocket wheel |83. both of which
are rotatable on stub shaft |84 journaled in divi
the gear segment in a clockwise direction relative
to Fig. 3. Upon release of the latching lever |03
through operation of the solenoid |26--|21, as
previously described, the sleeve 93 and shaft 33
are freed for rotation in a counter-clockwise di
rection relative to Figs. 3 and 5. Since the pin
ion |44 is connected to the shaft 83 through the
clutch members |40 and |43 and meshes with the
gear segment I 46, the springs |55 will cause the
shaft 83 to rotate in a counter-clockwise direc
tion relative to Fig. 3, upon release of the lug | 02
engaged by the lever |03, thereby causing the
shaft I to rotate the camming roller 55 and open
or close the switch as the case may be and in the
sion wall 81 and upstanding panel |35.
The sprocket wheel |83 is connected with a
sprocket chain |00 (see Figs. 2 and 4) which
passes through opening |81 (Fig. 3) and passes
over the small sprocket wheel |33 (Figs. 2 and 4).
The sprocket wheel IES is mounted on a shaft
|30 which extends into the casing |
contain
ing reduction gearing (not shown) driven by thc
electric motor ISH. When the motor |S| is oper
ated it will, through the described chain of mech
anism including the sprocket wheel |03, rotate
the cam |14 in a counter-clockwise direction
relative to Fig. 2. Thus when the roller |1| on
the arm |10 is in contact with any point between
again reset the releasable latching lever |03.
the low and high points |15 and |16 on the cam,
In the illustrated mechanism for operating the
the arm |10 will be moved downwardly relative
switch shown in Fig. l, the approximate ratio be
to
3 and simultaneously move the segmental
tween the gear segment |46 and pinion | 44 is four 60 gear |43 and springs |55 through the arm |5|
to one. Consequently, when the segment has
to the full line position shown in Fig. 3.
manner previously described. Shaft B3 will thus
continue to rotate until one of the lugs |02 has
moved to rotate the pinion four times, the switch
shown in Fig. 1 will have been opened twice and
closed twice. Obviously, the ratio may be varied
Obviously, when the segmental gear |48 is being
returned to its full line position in Fig. 3, the
pinion |44 must be free to rotate in a clockwise
to secure more or less operati-ons of the switch. 65 direction without rotating the shaft 83. As a
After the gear segment has moved its full dis
matter of fact, the shaft 33 cannot be rotated
tance the arm |5|, link |54, and springs |55 will
by the pinion |44 in a clockwise direction be
assume the broken line position shown in Fig. 3.
cause it is held against such rotation by the en
It will be noted that, when the springs |55 are
gagement of the catch 99 with the lug S5 on the
fully extended, the leverage exerted through the 70 sleeve 93. Consequently when the pinion |44 is
arm |5| is at a minimum and that as the springs
move the arm toward the broken line position, the
rotated in a clockwise direction the clutch mem
ber |43 secured thereto will move the clutch mem
leverage exerted rapidly increases, thus compen
ber |40 toward the sleeve flange 95, thereby allow
sating for the decrease in the force which the
ing the pinion to rotate freely without likewise
springs exert on the arm and thereby maintain 75 rotating the shaft B3.
2,410,253
10
Control circuit for the reminding motor 191
Fig. 9 illustrates an electric circuit (diagram
matically) for controlling the rewinding motor
ISL This . circuit is manually closed by the
switch 20d to energize a solenoid operated double
_pole switch l. The switch 2d!! is normally held
G and the switch operating mechanism H has
been made, the springs |55 may be stressed, as
indicated in Fig. 3, by operation of the rewinding
mechanism described with particular reference
to Fig. 9. Thereafter, the switch may be manu
ally operated through the shaft 83 by means of
a crank, in the manner previously described under
in open position by spring means 202 and when
the caption “Switch operating mechanism,” to
it is in closed position the solenoid winding 223
set the switch G in either its open or closed posi
is energized and the core 200 which is suitably
10 tion as the starting point of the succeeding cycles
connected to the switch blades of the double pole
of switch operation.
switch Zei, moves the switch ‘sel to closed posi
Thereafter each operation of the switch G is
tion. The switch 265 is then allowed to open.
initiated _by releasing kthe latching mechanism
When the switch 20| is closed, a circuit is estab
holding the lug |02 on sleeve 93, all specifically
lished through blade 2135 and motor |9i and also
described in detail with reference to Figs. 5, 6, and
through blade 2536, wire 2M, breaker switch 228,
8 under the caption “Releasable latching mech
wire 209, and solenoid winding 293. When these
anism for the shaft 83.” Upon the completion of
two circuits are established, the switch 2:25 will
each cycle of switch movement to open or closed
be held in closed position as long as the winding
position, this latching mechanism immediately
is energized and the motor lei will continue
20 stops further _delivery cf power to the switch
to rotate.
operating mechanism.
The workman controlling the release of the
As previously disclosed, the motor ISI drives
the cam Il!! (shown diagrammatically in Fig. 9)
in a counter-clockwise direction. Secured to the
latching mechanism will of course know the num
ber of times he has initiated switch operations
and will when the total number of such opera
tions available from the energy in the springs,
side of the cam |14 adjacent the high point |70,
is a pin 2id positioned to engage the upper end
of the resilient blade 2I| after approximately
initiate rewinding operations described with
specific reference -to Figs. 2, 3, 4, and 9 under the
caption “Rewinding mechanism for the stored
one complete revolution of the cam VM. Further
movement of the cam will, thro-ugh the pin ZIB,
cause the blade 2H to leave the contact 2|2 and
_thereby break the circuit through winding 2d3. 30
When the winding is de-energized, the core 26%
will under the iniiuence of a spring (not shown)
move the double pole switch 20| to open circuit
and break the circuit through the motor Isl.
It will be noted that when the motor circuit is
interrupted, the impetus of the moving mecha
energy mechanism.”
'
I claim:
1. In a device of the class described, the com
bination with a rotatable shaft, of a latch pre
venting rotation of said-shaft in one direction and
' permitting rotation thereof in the opposite direc
tion, releasable catch means normally preventing
rotation of said shaft in said opposite direction
and automatically effective after release for stop
ping said opposite rotation of said shaft a pre
determined distance in said opposite direction,
and operating mechanism for effecting rotation
passed the arm |10, thus permitting it to again
of
said shaft uponv release of said catch means.
move toward the low point |15 on the cam. Since
2. In a device of the class described, the com
the circuit through the Winding 203 is also inter
bination with a rotatable shaft, of a latch pre
rupted by the switch 200, the circuit therethrough
venting
rotation of said shaft in one direction
4
will not be re-established by the switch 208.
and permitting rotation thereof in the opposite
It will be understood that the switch 200 may
direction, releasable catch means normally pre
be located at any convenient point remote from
venting
rotation of said shaft in said opposite di
the foregoing described devices. However, the
rection and automatically effective after release
solenoid 203-204 and switch 20| are located in
for stopping said opposite rotation upon comple
the box shown at B in Fig. 3. Pivotally mounted
tion of a predetermined distance of opposite ro
on the box B is a biased lever C disposed in the
tation,
a pinion rotatable on said shaft including
path of movement of the pin 2|0 on the cam |14
a'clutch engageable therewith in the direction of
and arranged to operate the breaker switch 208
said opposite rotation of said shaft and disen
which is also disposed in the box B.
gageable
upon rotation of said pinion in said one
Preferably the switch |3| shown in Fig. 8 and
direction, a pivotally mounted segmental gear
switch 200 shown in Fig. 9 are located at a cen
meshing with said pinion, spring tensioned means
tral point where the operation of the switch G
urging
said gear for rotation of said pinion in
and the mechanism H may be controlled. In
said opposite direction of said shaft, and spring
order to insure that the mechanism H is ready
to work through a given number of switch opera 60 tensioning mechanism rendering said spring ten
sioned means inoperative upon completion of a
tions, it is only necessary to operate the switch
predetermined limit of pivotal movement of said
200. Even though the apparatus is fully set, the
gear in the rotation of said shaft, said spring
rewinding mechanism will operate through its
nism driven by the motor will be sufiicient to
carry the pin 2|0 past the blade 2| i and allow
the latter to close. When the cam has assumed
the position shown, the high point ll‘o‘ will have 40
complete rewinding cycle. If the mechanism H
has operated for only a portion of its switch '
operating cycle, the cam |14 will, during the re
winding operations, engage the arm |10 and reset
the mechanism. In other words, regardless of
whether or not the usable energy of the springs
has been spent, operation of the rewinding mech
anism will automatically reset the springs at
their intended maximum power.
tensioning mechanism> being operative to tension
said spring tensioned means a predetermined
maximum and tothereafter permit operation
thereof until said gear has completed its prede
termined limit of movement.
3. In a device of the class described, the com
bination with a rotatable shaft, of latching mech
anism normally holding said shaft against rota
tion, latch releasing means for releasing said shaft
for rotation in one direction, said latching mech
Operation
anism being operative to automatically stop ro
Assuming that after installation of the switch 75 tation of said shaft upon the completion of a
2,410,253
11
12
predetermined rotary movement thereof, a pin
pinion connected with said clutch, a segmental
gear meshing with said pinion, a gear operating
ion on said shaft including a clutch engageable
with said shaft in said one direction of rotation
and disengageable in the opposite direction, a
rotatable gear meshing with said pinion, spring
means operative to rotate said gear and thereby
rotate said Pinion in said one direction, tension
lever connected with said gear, spring means op
erating on said lever to rotate said gear and
thereby said pinion in said opposite direction, ro
tatable cam means having low and high points of
cam action, an arm integral with said lever dis
posed for contact with said cam between said
low and high points, and means for rotating said
determined maximum, said tensioning means
permitting operation of said spring means be 10 cam, said cam in one position permitting free
movement of said arm toward said low point
tween said predetermined maximum and a prede
thereon.
termined minimum tension of said spring means.
9. In a device of the character described, a
4. In a device of the class described, the com
rotatable shaft, a latch for holding said shaft
bination with a rotatable element, of a latch hold
ing said element against rotation in one direc 15 against rotation in one direction only, rotatable
spring actuated means interconnected with said
tion, and a releasable catch holding said element
shaft for rotation thereoi opposite to said one
against rotation in the opposite direction; said
direction and including a clutch releasable in
catch including a lug on said element, a pivoted
means for tensioning said spring means a pre
lever extending into the path of movement of
said lug, trip mechanism normally holding said
lever in said path of movement, and means for
tripping said mechanism.
5. In a device of the class described, the com
said one direction, an arm on said spring actu
ated means, a cam in the path of movement of
said arm, said cam in one position permitting
iree movement of said arm unobstructed by said
cam for
predetermined distance, an electric
motor interconnected with said cam ior rotation
bination with a rotatable element, of a latch hold
ing said element against rotation in one direc 25 thereof, said cam through the medium of said
arm moving said spring actuated means to a po
tion, and a releasable catch holding said element
against rotation in the opposite direction; said
sition of predetermined maximum tensioning of
.said spring, and a circuit for said motor includ
ing a switch for closing the circuit through said
pivoted intermediate its ends to provide a lug
engaging arm and a latching arm, toggle links 30 motor, a solenoid for closing said switch, a man
ually operable switch for closing the circuit
comprising a link pivotally connected to said lug
catch including a lug on said element, a lever
through said solenoid, the circuit through said
solenoid being closed by the first mentioned
said links being held in one relative position for
switch when operated by said solenoid, a breaker
latching said lever against pivotal movement and
collapsible to another position for the release of 35 switch normally in closed position in the circuit
through said solenoid, and means on said cam
said lever.
for opening said breaker switch upon completion
6. In a device of the class described, the com
engaging arm and a link having a fixed pivot,
bination with a rotatable element, of a latch
of effective cam movement on said arm.
10. In combination, a member rotatable about
holding said element against rotation in one di
rection, a releasable catch holding said element 40 an axis of rotation and including a portion hav
ing a point of attachment displaced radially from
against rotation in the opposite direction; said
said axis of rotation, said. point of attachment
catch including a lug on said element, a lever piv
being revoluble with said member about said axis
oted intermediate its ends to provide a lug en
of rotation, an anchorage more remote from said
gaging arm and a latching arm, toggle links com
prising a link pivotally connected to said lug
axis of rotation than said point of attachment,
energy-storing spring means pivotally connected
engaging arm and a link having a fixed pivot,
at one end to said member at said point of at»
said links being held in one relative position for
tachment, said spring means being connected at
latching said lever against pivotal movement and
its other end to said anchorage, said member be
collapsible to another position for the release of
said lever; and tripping mechanism for collaps 50 ing rotatable to energize said spring means and
thereafter rotatable by said spring means at the
ing said links.
expense of the energy stored therein by the first
7. In a device of the class described, the com
rotation of said member, said spring means be
bination with a rotatable element, of a latch
ing designed to apply force to said member along
holding said element against rotation in one di
a straight line interconnecting said anchorage
rection, a releasable catch holding said element
and said point of attachment, power means 0p
against rotation in the opposite direction; said
erative to rotate said member for energizing said
catch including a lug on said element, a lever
spring means, means operative automatically to
pivoted intermediate its ends to provide a lug en
stop said member at a predetermined angular
gaging arm and a latching arm, toggle links com
prising a link pivotally connected to said lug en 60 position following rotation thereof by said power
means, said point of attachment and said an
gaging arm and a link having a iixed pivot, said
chorage being disposed at opposite sides oi a
links being held in one relative position for
plane parallel to said axis of rotation When said
latching said lever against pivotal movement and
member is stopped at said predetermined angu
collapsible to another position for the release of
said lever; and tripping mechanism for collaps 65 lar position, and releasable means operative nor
mally to restrain said rotatable member against
ing said links, said links including an element
extending into the path of movement of said lug
rotation by said spring means.
after release of said element, whereby upon pre
l1, In combination, a member rotatable about
determined movement of said element said lever
an axis of rotation and including a portion hav
Will be reset for engagement with said lug.
ing a point of attachment displaced radially from
8. In a device of the class described, a rotat
said axis of rotation, said point of attachment
able shaft, a latch holding said shaft against
being revoluble with said member about said axis
movement in one direction only, a clutch en
of rotation, an anchorage more remote from said
gageable with said shaft in the opposite direction
axis of rotation than said point or attachment,
and disengageable in the opposite direction, a
tension spring means pivotally connected at one
2,410,253
13
14
end to said member at said point of attachment,
strut having a knee-joint situated intermediate
said tension spring means being connected at its
other end to said anchorage, said member being
rotatable to energize said spring means by ten
sioning the same and thereafter rotatable by said
spring means at the expense of the energy stored
therein by the ñrst rotation of said member,
ly of its length, said strut being collapsible in re
sponse to an over-center movement of said knee
joint, in one direction, and operative, only in
normal uncollapsed posture to obstruct move
ment of said element in said direction and to ar
rest the movement thereof at the completion of
each step, but ineffectual so to do when collapsed,
and means actuable by said element during each
power means operative to rotate said member
for tensioning said spring means, means opera
tive automatically to stop said member at a pre 10 step to effect a reverse over-center movement of
said knee-joint and thereby restore said strut to
determined angular position following rotation
normal posture.
thereof by said power means, said point of at
l5. In combination: an element rotatable step
tachment and said anchorage being disposed at
by-step in one direction, and escapement mech
opposite sides of a plane parallel to said axis of
rotation when said member is stopped at said 15 anism operative normally to restrain said ele
ment against rotation in said one direction, said
predetermined angular position, and releasable
escapement mechanism being actuable to release
latohing means operative normally to restrain
said element to permit rotation thereof in said
said rotatable member against rotation by said
one direction and automatically operative there
spring means.
after to arrest said rotation upon completion of
12. In a spring-motor mechanism, a rotatable
a predetermined step, said escapement mecha
member, a pinion coaxial with said member, a
nism comprising a lug carried by said element
one-way coupling interconnecting said member
and projecting therefrom laterally of the axis of
with said pinion whereby said member can be
rotation of said element, said lug being revoluble
rotated in one direction only by said pinion, re
with said element about said axis, a pivoted mem
leasable latching mechanism normally restrain
ber normally disposed in the path of said lug and
ing said member against rotation in said direc
normally functioning as a stop for restraining
tion but operative upon release to permit rota
said element against rotation in said one direc
tion of said member in said direction, said latch
tion, said pivoted member being rotatable out of
ing mechanism being automatically returned to
latching position upon initiation of rotation of 30 the path of Said lug to permit rotation of said
element, a toggle-like strut normally restraining
said member, a gear meshed with said pinion for
said pivoted member against rotation, said strut
rotating the same, a spring arranged to be en
being collapsible to release said pivoted member,
ergized upon rotation of said gear in one direc
thereby permitting rotation of said element in
tion, said spring being operative, When energized,
to rotate said gear in the opposite direction, the 35 said direction, and means operative by said ele
last-mentioned direction of rotation of said gear
being suitable to effect rotation of said rotatable
ment during each rotational step thereof to re
store said strut to its normal uncollapsed pos
ture, the restoration of said strut being effective
to rotate said member into the path of said lug.
ping means engageable with said mechanism for
the release thereof, and power-driven cam mech 40 16. In combination: an element rotatable
step-by-step in one direction, and escapement
anism for rotating said gear to energize said
mechanism operative normally to restrain said
spring.
element against rotation in said one direction,
13. In combination: an element which is mov
said escapement mechanism being actuable to re
able step-by-step in one direction, and releasable
lease said element to permit rotation thereof in
latching mechanism operative normally to re
said one direction and automatically operative
strain said element against movement in said di
thereafter to arrest said rotation upon comple
rection, said releasable latching mechanism be
tion of a predetermined step, said escapement
ing actuable to release said element to permit
mechanism comprising one or a plurality of an
movement thereof in said direction and automat
ically operative thereafter to arrest said move 50 gularly spaced lugs carried by said element and
projecting therefrom laterally of the axis of ro
ment upon completion of a predetermined step,
tation of said element, said lug or lugs being
said releasable latching mechanism including a
revoluble with said element about said axis, a
toggle-like collapsible strut which in its normal
pivoted member normally disposed in the path
uncollapsed posture is effective to obstruct move
ment of said element in said direction and to ar 55 of said lug or lugs and normally functioning as a
stop for restraining said element against rota
rest the movement thereof at the completion of
tion in said one direction, said pivoted member
each step, but ineffectual so to do When collapsed,
being rotatable out of said path to permit rota
tripping means engageable with said strut for the
tion of said element, a toggle-like strut normally
collapse thereof, and means operatively co-or
dinated with said element and effective during 60 restraining said pivoted member against rota
tion, said strut having a knee-joint intermediate
each step thereof in said direction to restore said
of its length, said strut being collapsible in re
strut to normal posture.
sponse to an over-center movement of said
14. In combination: an element which is mov
knee-joint, in one direction, to release said piv
able step-by-step in one direction, and escape
ment mechanism operative normally to restrain 65 oted member and thus permit rotation thereof
out of said path, said strut being restorable to
said element against movement in said direction,
normal uncollapsed posture by a reverse over
said escapement mechanism being actuable to
icenter movement of said knee-joint, said lug or
release said element to permit movement thereof
lugs being operative individually and sequential
in said direction and automatically operative
thereafter to arrest said movement upon com 70 ly, during each step, to effect the aforesaid re
verse over-center movement of said knee-joint.
pletion of a predetermined step, said escapement
ARTHUR M. TROGNER.
mechanism including a toggle-like compression
member through said pinion and coupling, trip
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 590 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа