close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3056873

код для вставки
Oct. 2, 1962
A. c. ALBEE
3,055,864
PROGRAM TIMER
v
Filed Sept. 3, 1959
3 Sheets-Sheet 1
?2.e.
38
27
ll
K
[11'
N6
Z
[87
L\402 3
I
31
~'@
47/
17
)
)
|
v
|
“
l
\In
i
1
I
I
III
i“,
INVENTOR
ARTHUR C. ALBEE
“wad/2%”;
ATTORNEY
Oct. 2, 1962
A. c. ALBEE
3,056,864
PROGRAM TIMER
Filed Sept. 3, 1959
5 Sheets-Sheet 2
Co
155.76-.
5O
INVENTOR
ARTHUR C. ALBEE
Elf/506%
Oct. 2, 1962
3,056,864
A. C. ALBEE
PROGRAM TIMER
Filed Sept. 3, 1959
‘h’ 86' 90 93
3 Sheets-Sheet 3
I 106
90
as
92
30
50
105
86
15/9. <9.
INVENTOR
58
76
ARTHUR c. ALBEE
United States Patent 0 f
3,056,864
Patented Oct. 2, 1962
1
2
3,056,864
5 is a motor 10‘ having a shaft 11 on which is mounted
a small driving gear 12. The gear 12 is meshed with a
Arthur C. Albee, Burbank, Calif, assignor to Radio Cor
larger gear 13 which rotates with a gear 14 in mesh with
PRQGRAM TMER
poration of America, a corporation of Delaware
Filed Sept. 3, 1959, Ser. No. 837,864
9 Claims. (@l. 200-46)
This invention relates to program timers to provide
switching facilities for a predetermined series of desired
events, and is useful, for example, as a mechanism which
provides switching facilities for a ?ight programming unit
a gear 15 on the shaft of a gear 16 in mesh with a
gear 17 driving the gears 18 and 19. The gear 19 has a
gear 22 on its shaft which also drives a sprocket 23. A
series of gears ‘25, 26, and 27 drive the shaft of a reel 30,
while gears 31, 32, and 33‘ drive the shaft of a reel 35.
Through the gears just described, the sprocket and reels
are provided with the desired rotational speed for ad
vancing a program ?lm 38 at the desired linear speed.
serving as an autopilot control of ballistic missiles.
As shown in FIG. 3, the ?lm 38 is advanced in the direc
Program timing mechanisms generally utilize perforated
tion of the arrow from reel 35 around a guide roller 39
tape or ?lm which control switches in a certain prede
over the toothed sprocket 23, and around a guide roller
termined order of operation. The present invention is 15 40 to reel 30. Upon reversal of the motor, the ?lm
one wherein a perforated ?lm is used to operate a plu
passes from reel 30 to reel 35- over the same path but
rality of switch blades or ?ngers in the order of perfora
in the reverse direction. The sprocket, gears, and reels
tion of the ?lm. The ?lm transport mechanism utilizes a
are mounted on shafts, some of which have hearings in a
drive sprocket, a supply reel, and a takeup reel, and is
frame 42 and some in the side plates 7 and 8, three bear
reversible in operation, since each reel is provided with 20 ings 43, 44, and 45 being shown in side plate 8. A plate
its own over-running clutches to provide the proper, vari
able takeup drive and hold-back tension when the fun"
tions ‘of the reels are reversed. The plurality of aligned
47 covers these bearings.
Mounted on the inner portion or plate 59‘ of the frame
42 is a block 52 having a groove 53 therein in which
switching blades or ?ngers are spring-biased and, upon en
is a cable 54 for the electrical conductors from the switches
countering a perforation in the ?lm, are moved into con 25 and to the motor. (See FIG. 9.) Fastened to the block
tact with respectively associated pins to close an elec
52 is a multiple switch which includes a metal switch
trical circuit. The sprocket is provided with grooves
block 56 attached to mounting blocks 52 by screws 57
under the longitudinal portions of the ?lm containing the
and 58. The switch block 56 has a plurality of grooves
perforations to accommodate the movement of the switch
60 therein (see FIG. 5) through all of which passes a
blades to enable them to make the necessary electrical
pivot pin 61 on which are mounted a plurality of con
contacts. The mechanism is driven by a motor through
a series of reduction gears to provide the desired ?lm
tact ?ngers or blades 63 having rounded ?lm contact
portions 64 and which are under bias of a plurality of
speed for the sprocket and for driving the takeup reels.
springs 66 fastened to one side of the switch block 56
The principal object ‘of the invention is to provide an
by a plate 67 and screws 70‘. The rounded ends 64 are
improved timing mechanism in which the closing of a 35 adapted to pass through apertures 83 in the ?lm to drop
plurality of electrical circuits in a predetermined order is
into grooves 84 in the sprocket 23. This movement per
facilitated.
mits the other ends of the blades to make electrical con
tacts.
Another object of the invention is to provide an im
proved program timing mechanism which is rugged and
Mounted to one side of the block 56 is an L-shaped
may be used in fast-moving airborne units, such as bal 40 plastic contact pin support 68 which is fastened to the
block 56 by screws 69‘. The lower portion 71 of the
listic missiles.
plastic pin support accommodates a plurality of pins 72
A further object of the invention is to provide an
the lower ends 73 of which extend below the lower sur
improved mechanism for making electrical circuits in a
face of the pin mount 71, and the upper ends of which
predetermined order, which is contained in a minimum
of space, and which is particularly reliable for airborne 45 extend to substantially the upper edge of the pin mount
units.
68. To the upper ends of the pins '72, electrical con
ductors 75 are connected, the conductors being positioned
A better understanding of this invention may be had
along the upper surface of the block 56 and thence en
from the following detailed description, when read in
tering the cable 54, as shown in FIG. 9. The conductors
connection with the accompanying drawings, in which:
FIG. 1 is a perspective view showing the over-all ap 50 75 pass through notches 76 in the upper edge of the pin
mount 68. The block 56 is provided with stepped grooves
pearance of the casing housing the invention;
78 and 81' for accommodating the cable 54.
FIG. 2 is an enlarged, sectional view taken along the
To maintain the conductors and cable in position and to
line 2—2 of FIG. 1;
cover the upper ends of the pins 72, this portion of the
FIG. 3 is an elevational view taken along the line
3-3 of FIG. 2;
55 block is plasticized to form the sheet 80, which is held at
one end by an undercut groove 81 in the block 56, and
FIG. 4 is an enlarged, detail view of the switch contact
which extends over the conductors and pins at its other
elements;
end 82. The cable 54 shown in FIG. 9 passes into a
FIG. 5 is a fragmentary, sectional view taken along
the line 5-5 of FIG. 4;
terminal box 86” to which a cable 87 may be connected
FIG. 6 is a cross-sectional view taken along the line 60 for external connection of the timer.
6-6 of FIG. 3;
As mentioned above, the ?lm transport mechanism may
be reversed to advance the ?hn in either direction. To
FIG. 7 is a reduced, cross-sectional view taken along
the line 7—7 of FIG. 6;
accomplish this, each ?lm reel has included in its drive
FIG. 8 is a cross-sectional view taken along the line
‘mechanism a pair of opposite-acting, over-running
8-8 of FIG. 6; and
65 clutches made up of rollers 86' for one clutch of reel 30,
'FIG. 9 is a plan view taken along the line 9—-9 of
and rollers 88 for one clutch of reel 35 (see FIG. 3). In
FIG. 4.
FIG. 6, rollers 86' are shown within one end of a cylinder
Referring, now, to the drawings in which the same
‘90, and rollers 86 within the other end of the cylinder,
reference numerals indicate like elements, a ?lm transport
the cylinder having an annular recess 91 therein. Rollers
and switching mechanism is contained in a rectangular 70 86 are mounted on a spider 92, and rollers 86' are mount
casing 5 having mounting extensions 6 and 6’ and side
ed on a spider 93. Spider 93 is ?xed to the drive shaft
closing and bearing plates 7 and 8. Within the casing
105, While spider 92 is pinned to inner plate 50 by a pin
3,056,864;
3
94 and is free of the shaft 105. The pin ends 100 of the
respective rollers 86 and 86' are mounted in elongated,
over-sized slots in the spiders ‘92 and 93, respectively, and
are biased .in a linear direction by springs ‘95 and 96, one
end of each spring being in contact with a roller 86 or
86’, and the other end of each spring being mounted on
a bracket 98 or 99, as the case may be, for the respec
tive springs 95 and 96. A square cam 97 for reel 30 and
a similar cam '97’ for reel 35 (see FIG. 3) move the rollers
radially as they move linearly to obtain a binding action
between the inner surface of the cylinder and the respec
tive cams.
Thus, for reel 30‘ to function as a takeup reel, the drive
shaft 105 rotates the cylinder 90 through spider 93, since
it
along different transverse areas thereof, a pair of combi
nation takeup and supply reels for said ?lm, reversible
driving means for driving said reels, said reel driving
means including a pair of opposite-acting clutch devices
for each of said reels, each of said clutch devices com
prising an over-running clutch, one for driving its reel as
a takeup reel and the other for placing a drag on its
said reel during the time it functions as a supply reel,
means for driving said sprocket at substantially constant
speed, a plurality of ?lm actuable contact switch blades
pivoted adjacent said ?lm, one end of each of said blades
being disposed for contact with a different one of said
transverse areas of said ?lm and being responsive to ?lm
perforations at the respective ones of said areas, a plu
the springs ‘96 urge the rollers 86’ toward one end of the 15 rality of contact elements corresponding in number to and
each associated with a diiferent one of said switch blades,
respective flat surfaces of the square cam 97 to bind the
and conductors from said contact elements for connec
inner surface of the cylinder to the cam. Since spider 92
tion ‘of said switching device to devices to be actuated
is free of the shaft 105, it remains stationary inasmuch as
when contact is made between any of said blades and
it is pinned to the plate 50.
To provide the desired speed variation between the 20 their respective said contact elements.
3. A multiple switching device in accordance with claim
cylinder 90, which rotates at a constant speed, and the
2 in which means are positioned within each said reel
speed of the reel 30, which varies as the ?lm roll increases
for providing a predetermined driving friction to its reel
in diameter when used as a takeup reel, a split ?ber ring
and providing a predetermined drag thereto when its said
having sections 1011 and 102 (see FIG. 7) is positioned in
the recess 91 of the cylinder. The sections 101 and 102 25 reel functions as a supply reel.
4. A program timing device comprising an enclosing
are urged outwardly by resilient plugs or springs 103 and
casing and within said casing a ?lm sprocket adapted to
104, the sections being held and limited in movement by
advance a perforated ?lm having perforations along dif
pins 106 in oversized holes in the sections 101 and 102.
ferent transverse areas thereof, reversible motor means
In this manner, suf?cient friction is obtained between the
reel and the sections 101 and 102 to drive the reel and 30 for driving said sprocket at a substantially constant speed
in one or the other of two opposite directions to corre
take up the ?lm, but the reel can slip to accommodate its
spondingly advance said ?lm, a pair of ?lm reels adapted
change in speed.
to alternately function as takeup ‘and supply reels de
Now, when the reel shaft is reversed and the reel is
pending upon the direction of rotation of said sprocket,
serving as a supply reel, the cylinder '90 is locked to spider
92 by reason of the springs 95 urging the rollers 86 to 35 a plurality of gears between said motor means and said
sprocket and said ?lm reels for driving said sprocket and
the ends of the ?at sides of their associated square cam
reels in correspondence with each other, ‘a shaft for each
97. Since the spider 92 is held stationary, the cylinder
of said reels driven by said gears, means including a pair
90 then is held stationary. However, the spider 93 can
of opposite-acting clutch devices on each of said shafts
rotate freely within the cylinder, since the rollers 86' are
urged toward the center of the ?at surfaces of their as 40 coupling each of said reels to their respective said shafts,
one clutch device of each said pair being effective to trans
sociated square cam. With the cylinder stationary, the
reel must now slip on the ?ber sections 101 and 102 which
mit power from its associated one of said shafts to its
now provide the desired hold-back tension in the ?lm.
Therefore, the two over-running clutches for each reel,
together with the friction drive for each reel through the
associated reel, and the other clutch device of each said
driving means for driving said reels, said reel driving
ends pass through said perforations and into said grooves,
pair being effective to cause a drag to be applied to its
associated reel, in each case depending upon the direction
of drive of said motor, a plurality of switch blades
?ber sections, provide the desired, variable speed takeup
pivoted adjacent said sprocket, one end of each of said
reel action and the desired supply reel hold-back action
blades being ‘disposed for contact with said ?lm along a
to permit identical ?lm advancement drives in either one
different one of said transverse areas thereof, said sprocket
of the two opposite directions.
5 having grooves therein over which the perforations in said
I claim:
?lm pass, a plurality of contact elements corresponding
1. A multiple switching device comprising a sprocket
in number to and each associated with a different one of
adapted to advance a perforated ?lm having perforations
said switch blades and adapted to be contacted by the
along different transverse areas thereof, a pair of com
other ends of said switch blades when said ?rst-mentioned
bination takeup and supply reels for said ?lm, reversible
means including a pair of opposite-acting clutch devices
for each of said reels, one clutch device of each said pair
being effective to transmit power from said driving means
to its associated reel and the other clutch device of each
said pair being e?fective to cause a drag to be applied to
its associated reel ‘depending upon the direction of drive
of said reel driving means, means for driving said sprocket
at substantially constant speed, a plurality of ?lm actuable
contact switch blades pivoted adjacent said ?lm, one end
of each of said blades being disposed for contact with a 6
diiferent one of said transverse areas of said ?lm and
being responsive to ?lm perforations at the respective ones
of said areas, a plurality of contact elements correspond
a plurality of conductors attached to said contact ele
ments and extending externally of said casing, and means
for hermetically enclosing said contact elements and said
conductors.
5. A program timing device comprising an enclosing
casing and within said casing a ?lm sprocket adapted to
advance a perforated ?lm having perforations along dif
ferent transverse areas thereof, reversible motor means
for driving said sprocket at a substantially constant speed
in one or the other of two opposite directions to corre
spondingly advance said ?lm, a pair of ?lm reels adapted
to alternately function as takeup and supply reels de
pending upon the direction of rotation of said sprocket, a
plurality of gears between said motor means and said
ing in number to and each associated with a different one
of said switch blades, and conductors from said contact 70 sprocket and said ?lm reels for driving said sprocket and
reels, a shaft for each of said reels driven by said gears,
elements for connection of said switching device to de
means including a pair of opposite-acting clutch devices
vices to be actuated when contact is made between any of
on each of said shafts coupling each of said reels to their
said blades and their respective said contact elements.
2. A multiple switching device comprising a sprocket
adapted to advance a perforated ?lm having perforations
respective said shafts, said clutch devices comprising over
5 running clutches, one of said clutches connecting its as
3,056,864
.
5
sociated reel to its shaft when functioning as a takeup
reel, iand the other of said clutches holding said last~
named reel shaft stationary when said associated reel
functions as a supply reel, a plurality of switch blades
pivoted adjacent said sprocket, one end of each of said
blades being disposed for contact with said ?lm along a
different one of said transverse areas thereof, said sprocket
having grooves therein over which the perforations in said
?lm pass, a plurality of contact elements corresponding
6
disposed for contact with a different one of said trans
verse areas of said ?lm and being responsive to ?lm per
forations at the respective ones of said areas, a plurality
of contact elements corresponding in number to and each
associated with a diiferent one of said switch blades, and
conductors from said contact elements for connection of
said switching device to devices to be actuated when con
tact is made between any of said blades and their respec
tive said contact elements.
in number to and each associated with a different one of 10
8. A program timing device comprising an enclosing
said switch blades and adapted to be contacted by the
casing and within said casing a ?lm sprocket adapted
other ends of said switch blades when said ?rst-mentioned
to advance a perforated ?lm having perforations along
ends pass through said perforations and into said grooves,
diiferent transverse areas thereof, reversible motor means
a plurality of conductors attached to said contact ele
for driving said sprocket at a substantially constant speed
ments and extending externally of said casing, and means 15 in one or the other of two opposite directions to corre
for hermetically enclosing said contact elements and said
conductors.
spondingly advance said ?lm, a pair of ?lm reels adapted
to alternately function as takeup and supply reels de
pending upon the direction of rotation of said sprocket,
6. A program timing device comprising an enclosing
casing and within said casing a ?lm sprocket adapted to
a plurality of gears between said motor means and said
advance a perforated ?lm having perforations along dif 20 sprocket and said ?lm reels for driving said sprocket and
ferent transverse areas thereof, reversible motor means
said reels in correspondence with each other, a shaft for
for driving said sprocket at a substantially constant speed
each of said reels driven by said gears, a ?rst friction
in one or the other of two opposite ‘directions to corre
coupling member and ?rst and second opposite-acting
spondingly advance said ?lm, a pair of ?lm reels adapted
clutches on one of said shafts for coupling said one
to alternately function as takeup and supply reels de 25 shaft to one of said reels, a second friction coupling
pending upon the direction of rotation of said sprocket, a
member and third and ‘fourth opposite-acting clutches
plurality of gears between said motor means and said
on the other of said shafts for coupling said other shaft
sprocket and said ?lm reels for driving said sprocket and
to the other of said reels, said ?rst clutch being effective
reels, a shaft for each of said reels driven by said gears,
to transmit power from said one shaft to said ?rst fric
means including a pair of opposite-acting clutch devices 30 tion coupling member to thereby drive said one reel and
on each of said shafts coupling each of said reels to their
said fourth clutch being re?ective to cause said second
respective said shafts, means positioned on each of said
reel shafts for frictionally driving said reels when func
tioning as takeup reels and for exerting a predetermined
friction coupling member to apply drag to said other
reel all in response to operation of said motor means in
one direction, said second and third clutches then being
amount of drag on said reels when functioning as supply 35 inactive, and said third clutch being eifective to transmit
reels, a plurality of switch blades pivoted adjacent said
power from said other shaft to said second friction mem
sprocket, one end of each of said blades being disposed
ber to thereby drive said other reel and said second
for contact with said ?lm along a different one of said
clutch being effective to cause said second friction cou
transverse areas thereof, said sprocket having grooves
pling member to apply drag to said ?rst reel in response
therein over which the perforations in said ?lm pass, a 40 to operation of said motor means in the reverse direc
plurality of contact elements corresponding in number to
tion, said ?rst ‘and fourth clutches then being inactive, a
and each associated with a different one of said switch
plurality of switch blades pivoted adjacent said sprocket,
blades and adapted to be contacted by the other ends of
one end of each of said blades being disposed for con
said switch blades when said ?rst-mentioned ends pass
tact with said ?lm along a diiferent one of said trans
through said perforations and into said grooves, a plu 45 verse areas thereof, said sprocket having grooves therein
rality of conductors attached to said contact elements and
over which the perforations in said ?lm pass, a plu
extending externally of said casing, ‘and means for her
rality of contact elements corresponding in number to
metically enclosing said contact elements and said con
and each associated with a diiferent one of said switch
ductors.
blades and adapted to be contacted by the other ends
7. A multiple switching device comprising a sprocket 50 of said switch blades when said ?rstamentioned ends
adapted to advance a perforated ?lm having perforations
pass through said perforations and into said grooves, a
along different transverse areas thereof, a pair of com
plurality of conductors attached to said contact elements
bination takeup and supply reels for said ?lm, reversible
and extending externally of said casing, and means for
driving means for driving said reels concurrently in one
hermetically enclosing said contact elements and said
or the other of two opposite directions, ?rst and second 55 conductors.
opposite-acting clutches interposed between said driving
9. In combination, a sprocket adapted to advance a
means and one of said reels, third and fourth opposite
?lm, a pair of combination takeup and supply reels for
acting clutches interposed between said driving means and
said
?lm, reversible driving means for driving said
the other of said reels, means for applying drag to the
respective said reels, said ?rst clutch being e?ective to 60 sprocket and said reels concurrently in one or the other
of two opposite directions, ?rst and second opposite-act
transmit power from said driving means to said one reel
ing
clutches interposed between said driving means and
and said fourth clutch being effective to cause said drag
one of said reels, third and fourth opposite-acting clutches
applying means to apply drag to said other reel in re
interposed between said driving means and the other of
sponse to ‘operation of said driving means to drive said
reels concurrently in said one direction, said second and 65 said reels, means for applying drag to the respective said
reels, said ?rst clutch being effective to transmit power
third clutches then being inactive, and said third clutch
from said driving means to said one reel and said fourth
being effective to transmit power from said driving means
clutch being effective to cause said drag applying means
to said other reel and said second clutch being effective
to apply ‘drag to said other reel in response to operation
to cause said drag applying means to apply drag to said
one reel in response to operation of said driving means 70 of said driving means to drive said reels concurrently in
said one direction, said second and third clutch then being
to drive said reels concurrently in said other direction,
inactive, and said third clutch being effective to trans
said ?rst and fourth clutches then being inactive, means
mit power from said driving means to said other reel and
for driving said sprocket at substantially constant speed,
said second clutch being effective to cause said drag
a plurality of ?lm actuable contact switch blades pivoted
adjacent said ?lm, one end of each of said blades being 75 applying means to apply drag to said one reel in response
3,056,864
7
r
to operation of said driving means to drive said reels con
currently in said other ‘direction, said ?rst and fourth
clutches then being inactive.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,940,357
Lester _______________ __ Dec. 19, 1933
5
s
‘1,950,694
2,065,057
2,228,969
2,574,688
2,853,563
Parkingson __________ __ Mar.
2,860,199
James _______________ __ Nov .
2,884,495
Frankel ______________ __ Apr .
Debrie ______________ __ Dec.
Osborn ______________ __ Jan.
13, 1934
22, 1936‘
14, T1941
Cami-as _____________ __ Nov.
13, 1951
Bole ________________ __ Sept.
23, 1958
11, 1958
28, 1959
Документ
Категория
Без категории
Просмотров
0
Размер файла
780 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа