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Патент USA US3070219

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Dec. 25, 1962
J. RABINOW
3,070,213
MECHANICAL MEMORY
Filed May 11, 1961
2_ Sheets-Sheet 1
Dec. 25, 1962
J. RABINOW
3,070,213
MECHANICAL MEMORY
Filed May 11, 1961
2 Sheets-Sheet 2
INVENTOR
Jacob lYaZz'Ztaw
BY
ATTORNEYS
United States Patent Office
1
3,979,213
Patented Dec. 25, 1962
2
3,070,213
MECHANIQAL MEMORY
Jacob Rabinow, Talroma Park, Md, assignor to Rabinow
Engineering (10., Inc, Takoma Park, Md.
Filed May 11, 1961, Ser. No. 199,296
13 ?llaims. (Cl. 198-38)
This invention relates to memory devices and particu
larly to devices which temporarily store and use coded
adjusted to its new position by my adjusting means shown
best in FIGURES 1, 2 and 4.
In the accompanying drawings FIGURE 3 shows a
remote mechanical memory 10 adapted to control the
operation of machines or equipment (not shown), for
example a sorting machine. Mechanical memory 10 is
composed of a frame 12 supporting a pair of parallel
shafts 14 and 15 having pairs of sprockets around which
two endless conveyor chains 16 and 18 are entrained.
information.
10 Shaft 14 has a power input drive sprocket 2% or the like
There are many disclosures in the prior art which de
to turn shaft 14 and thereby cause both conveyor chains
scribe machines relying on mechanical coding to program
16 and 18 to move in unison. The movement of drive
machine operation. For example, the J. Rabinow et al.
sprocket 20 is synchronized with the machine which
Patent No. 2,901,089 discloses a sorting machine with an
memory device 10 services. To schematically show this
escort code for each article-supporting pocket. My 15 I have illustrated sprocket 19 which is assumed to be a
present invention improves some of the features of such
part of, or to otherwise rotate at a speed proportional to
a machine, although the principles of my invention are
the controlled machine. Sprockets 19 and 20 are cou
not limited to sorting machines.
pled by a chain 21.
The general object of my invention is to provide a
The immediately following description relates prin
mechanical memory which may be integrally constructed
cipally to the movable code means and stationary code
as the programming device of a machine, or which may
means which correspond to similar movable and station
be constructed as a separate (remote) unit to control one
or more machines.
ary code means in the J. Rabinow et al. patent. Frame
12 has a transverse wall 13 (FIGURES 1-3) supporting
the stationary code means, for instance a group of code
The J. Rabinow ct al. patent discloses a sorting machine
which is programmed as articles are fed into it. The 25 bars ‘22, '23, 24, etc. (FIGURE 1), which may be identical
program device has a movable code composed of a shaft
to the corresponding code bars in the above I. Rabinow
provided with a number of code wheels for each article
patent. The code bars need not be the same as in the
pocket. The wheels are adjustable to selected binary
positions by a group of solenoids and yokes.
Rabinow et al. patent; they may vbe simple plastic or
metal bars attached to wall 13 and so spaced as to de?ne
A speci?c object of my invention is to provide a new 30 slots therebetween. Cam track 26 is secured to wall 13
way of adjusting the code wheels in the sorting machine
of frame 12 alongside of the group of code bars 22», 23,
disclosed in the I. Rabinow patent or in any other sort
24, etc. The cam track has dwell 27 at the position where
ing machine which relies on adjustable code wheels or
the like to program the machine. An important feature
interrogates a given transverse group of code bars. It is
the movable code means (to be described in detail later)
of my new code wheel adjusting means is that it is sim
understood that there will be a number of groups of code
pler than prior code wheel adjusting devices, consider
bars and one cam dwell 27 for each group to establish
ably more inexpensive, and yet, is reliable.
This com
successive stations at which the movable code means
parison applies not only to the J. Rabinow et al. patent
code wheel setting features and devices, but also to the
interrogate or sample the arrangement of code bars to
determine whether the movable and stationary codes
I. Rabinow et al, rotary code wheel setter disclosed in
match or mis-match.
pending application U.S. Serial No. 31,383.
The movable code means 28, being similar or iden
tical to the corresponding movable code means in the
I. Rabinow patent, are translated in a constrained path
trol the operation of one or more machines or machine
by being attached to spindle 39 (FIGURE 1) secured
functions, where the characteristic feature of the memory 45 to both chains 16 and 18, and spanning the code bars
is in the improved means for setting the code in the
and cam track. ‘ The movable code means 28 consists of
Another object of my invention is to provide a remote
memory for storing information which is useful to con
memory.
a shaft 32 on which a group of code wheels or elements
Other objects and features of importance will become
apparent in following the description of the illustrated
form of the invention which is given by way of example
34, 3-5, 36, etc., are adjustably mounted for axial shifting
to a selected one of two alternative positions (FIGURE
only.
5). There are means, for example ‘garter spring 37 held
captive in an annular groove in the hub of the code wheel,
FIGURE 1 is a fragmentary top view showing a por
tion of the mechanical memory and particularly the
for automatically retaining the code wheel in its selected
position. Shaft 32 is connected to spindle 30 by a pair
means for adjusting selected code wheels as they are
of swinging arms ed and 42 attached respectively to the
translated in their normal path of travel.
55 spindle 3t) and shaft 32. Cam follower 44 is mounted
FIGURE 2 is an enlarged fragmentary sectional view
for rotation on shaft 32 near one of its ends, and it rides
taken approximately on the line 2—2 of FIGURE 1,
on cam track 26. Thus, ‘when the assembly consisting
of spindle 30, arms 41) and 4-2, shaft 32 and the code
with structural features in the background omitted for
clarity of the drawing.
wheels, is translated by the movement of conveyor chains
FIGURE 3 is a side elevational view of the mechanical 60 16, 18, the cam follower 44 on its ca-m track will retain
the code wheels in an elevated position lightly contacting‘
memory showing that it may be constructed as a remote
the top surfaces of the code bars 22, 23, 24, etc. When
device independent of the machine which it controls,
the cam follower 44 follows the surface of the dwell 27
except for means to keep the remote mechanical memory
in the cam track, shaft 32 will swing downward by gravity,
phased with the machine, and other means to transmit
provided that all of the code wheels match slots in or
65
the intelligence to the memory to control the machine
adjacent to the code bars at the sampling station estab
functions.
lished by the dwell 27.
FIGURE 4 is a perspective view showing a portion of
When the codes match, a wide variety of signal genera
the code wheel adjusting feature.
tors may be made operative. For instance, a mechanical
FIGURE 5 is an enlarged fragmentary setcional view
function may be performed such as disclosed in the J.
showing a typical code wheel on its shaft in one position, 70 Rabinow et al. patent. On the other hand, an electri
and the same wheel in dotted lines after it has been
cal signal may be triggered, for instance by operation of
3,070,21 a
4
shaft 80 and causes arm 81 to bear against one face of
switch 48 having a switch arm 49 located adjacent to the
its disc and tilt the disc. The spring associated with the
dwell 27 in the cam 26. The end of the switch operating
tilted disc compresses during the tilting movement of the
arm 49 is lower than the upper surface of cam track 26.
disc, so that when the solenoid is de-energized the arms
A wheel 50 or the like is carried by shaft 32 above the
81 and 76 together with the hollow shaft 80 supporting
end of switch arm 49. Thus, if the codes fail to match,
them, return to the initial position. The return motion
shaft 32 remains in a single horizontal plane above switch
for shaft 80 can be obtained by the solenoid or its spring
operator 49. However, if the codes match, the code
when a push-pull connection is used between push rod 74
wheels, shaft 32 and particularly the wheel 50, will be
and rocker 76. Each solenoid and disc has a similar
gravity lowered at the dwell 27 of the cam. In lowering,
the end of the switch operating arm 49 will be in the path 10 mechanism for tilting the disc in response to solenoid
actuation. For instance, solenoid 54a (FIGURE 4) has
of travel of the wheel 50 so that the switch 48 is actuated.
push red 7412 contacting rocker 76a which projects lateral
The leads 51 attached to switch 48 may be connected with
ly from hollow shaft 80a. Arm 81a on hollow shaft 80a
any suitable circuitry to control a remotely located ma
has its pad 82a in contact with a face of disc 54. Thus,
chine or a machine of which the memory 10 is a part.
Attention is now drawn to one of the main features of 15 disc 54 is tilted in response to operation of solenoid 54a.
Disc 55 is operated similarly by solenoid 55a, through its
my invention namely, a mechanism for adjusting the code
push rod 74b, rocker 76b, hollow shaft 8%, arm 81b and
wheels to selected positions (FIGURE 5) in order to set
pad 82b.
up a given code. For the purposes of this application it is
The discs have peripheral notches 90 (see FIGURE 2)
assumed that the code wheels will be reset by a resetting
within which shaft 32 becomes nested as the movable
device (not shown) before they reach the wheel setting
code device 28 travels in its normal course. The purpose
device shown at the left of FIGURE 1. The resetter may
of this is to have a considerable area of the disc along
be constructed as I have disclosed in my prior patent or in
pending application Serial No. 31,383. Thus, when the
side of a face of one of the wheels at the instant that the
disc is tilted to adjust a wheel. Thus, it is required that
FIGURE 1, all wheels 34, 35, 36, etc., will be in a 25 the discs 53, 54, 55, etc. be rotated in phase with the
movement of the movable code device 28. The phasing
given position, for instance as shown in full lines in FIG
may be obtained in many ways, a simple one being by re
URE 5. Certain of the wheels will be adjusted to the
lying on a chain-sprocket drive (FIGURES l and 3)
dotted line position shown in FIGURE 5 depending on
operated from shaft 14. The chain-sprocket drive con—
the particular code which is desired for a given movable
movable code means 28 reaches the position shown in
code device 28.
The wheels are set by tilting selected 30 sists of an endless chain 92 entrained around sprockets
plates in the form of discs 53, 54, 55, etc., there vbeing a
single disc for each code wheel 34, 35, 36, etc. To select
which wheel is to be set or permitted to remain in its
original position on shaft 32, a selected solenoid 53a, 54a,
or 55a, etc. (FIGURE 4) is energized. There is one
solenoid for each disc, although I have shown only three
in FIGURE 4. As I show in FIGURE 2, during a part
94 and 96 and engaging sprocket 98. The sprocket 98
is at the end of spline shaft 56. Sprocket 94 is attached
to shaft 14, and sprocket 96 is merely an idler suitably
mounted on a spindle 99 secured to frame 12. Accord
ingly, shaft 56 turns at a speed calculated to assure that
one of the notches 90 in each disc will receive the shaft
32 (FIGURE 2) as the movable code means 28 is driven
to the position shown in FIGURE 2.
of the normal travel of the movable code means 28, the
Summarizing the operation, spline shaft 56 is rotated in
wheels on shaft 32 will be located alongside of the group
of discs, and at that moment, the selected discs are tilted. 40 phase with the movement of the movable code means 28
so that there will be a time when shaft 32 is nested with
Those which are to be tilted in accordance with the code
in one notch 90 of each disc 53, 54, 55, etc. At this
to be established, push the wheels (FIGURE 5) from
time, certain (or all) of the solenoids 53a, 540, etc. are
one position to the next. The structural arrangement and
energized to cause the corresponding discs to tilt, thereby
necessary synchronization between the wheel setting
mechanish and the movable code means is described be 45 adjusting the preselected wheels (FIGURE 5) to the sec
ond of two possible positions on shaft 32. The selection
low.
of solenoids may be made by hand, e.g. by key operation
The discs 53, 54, 55, etc., are mounted loosely on a
of a keyboard console or by other means such as a read
spline shaft 56 (FIGURE 2) so that the shaft rotates the
ing machine or a buffer. Regardless of the source of in
discs but yet, the discs can be tilted on the shaft. Yield
telligence to select solenoids, the resulting operation of
ing means retain all discs in planes perpendicular to the
preselected solenoids (while others of the ‘group are not
longitudinal axis of spline shaft 56. The yielding means
operated) will set up a code of wheels on shaft 32 which
for each disc include a spring 60 on spline shaft 56 with
uniquely matches a stationary code, i.e. one group of code
one end bearing against one face of its disc. The other
bars, as fully described in the Rabinow et al. patent.
end of the spring bears against a stop collar 63 which is
The preceding description of one form of my invention
seceured to the spline shaft. Thus, when the disc is 55
tilted, the spring 60 is compressed against one stop collar
63 (see FIGURE 1) while the disc fulcrums about an
edge of an adjacent stop collar.
The drive mechanism between the solenoids and the
discs to tilt the discs is shown best in FIGURES 2 and 4. 60
is given by way of example only. There are many modi
?cations which may be made without departing from the
inventive concept, and many re?nements which will read
ily occur to persons skilled in the art. For instance, I
have shown my wheel setting mechanism at one end of the
conveyor system for the movable code means. It may be
The solenoid 53a has a push rod 74 attached to its arma
located elsewhere such as above or below the code bars
ture and bearing against one end of an operating rocker
and intermediate the front and rear shafts 14, 15. When
76. Alternatively, the push rod may extend through a
located at the end, as shown, cam 26 will be a re-entrant
hole in rocker 76 and have spaced stops attached to the
rod and located on opposite sides of the rocker. This will 65 cam to prevent arms 40 and 42 from simply swinging
downward by gravity when the end of the code bar as
establish a push-pull connection. A nylon pad or the like
sembly is reached. Other such changes falling within the
may be at the end of the push rod '74 to bear against the
scope of the following claims may be resorted to.
rocker, although this is optional. Rocker 76 is secured
I claim:
to a hollow shaft 80 which is mounted for oscillation on a
1. In a mechanical memory having stationary code
spindle 82 whose lower end is attached to the bottom of 70
means, movable code means cooperable with said station
frame 12. An arm 81 is secured to hollow shaft 80 and
ary code means and providing an output when the code
extends behind the disc which it operates. There is a
means match, said movable code means including a shaft,
wear pad 82 on arm 81 contacting a face of the disc. Ac
a group of wheels mounted on said shaft, each wheel
cordingly, when one of the solenoids is actuated, the
push rod connected with the solenoid oscillates hollow 75 being adjustable to one of a possible pair of positions,
6
means for moving said shaft and the wheels thereon as a
said support is also indirectly synchronized with the re
unit in a predetermined path of travel to enable said wheels
to interrogate said stationary code means, the improve
ment comprising means to adjust selected wheels while
said shaft and its wheels are in said predetermined path
of travel, said adjusting means including a support adja
cent to said shaft and Wheels, a plurality of members
mote machine.
are interleaved with said wheels at the time that said mem
bers are tilted to adjust said wheels.
mounted on said support and interleaved with the wheels
able code means includes a shaft on which said wheels are
8. The subject matter of claim 6 wherein said members
9. The subject matter of claim 8 wherein said members
are discs provided with peripheral notches, and said movs
supported for said adjustment, and said shaft becoming
at least one of said members while said members are inter 10 nested within said notches during a portion of the travel of
leaved with said wheels and thereby adjust the correspond
said movable code means at which at least one selected
of a group as said group passes said support, means to tilt
ing wheel on its shaft, and means to rotate said members
in phase with the movement of said wheels and shaft group
disc may be tilted to adjust a code wheel on its shaft.
10. The subject matter of claim 9 wherein there are
resilient means to return the tilted disc to an initial posi
in said path of travel.
2. The mechanical memory of claim 1 wherein said 15 tion after it has adjusted the code Wheel on said shaft.
means to rotate said members in phase with the movement
of said shaft and wheels in said path of travel include
11. In a mechanical memory which has a plurality of
code elements which are adapted to be adjusted posi
means to rotate said support in phase with said group,
tionally to establish a code, the improvement comprising
and means coupling said members to said support for ro
a code element-setting device to adjust at least one of
tation therewith.
20 said code elements, said setting device comprising a sup
3. The mechanical memory of claim 2 wherein said
port, a plurality of members, means to rotate said sup
members are discs provided with peripheral notches into
port, means coupling said members to said support for
which said shaft nests during a portion of the path of travel
rotation therewith and for tilting movement to displace
of said shaft so that copious areas of the wheels and faces
said members while they are being rotated, abutment
of the discs are laterally adjacent at the time that selected 25 means operatively associated with each member, and
discs are tilted to adjust the wheels on their shaft.
selectively operable means associated with each abutment
means for displacing said abutment means and thereby
4. The mechanical memory of claim 3 and resilient
means reacting on said discs and opposing the tilting move
tilting a selected member to cause the selected member
to move a corresponding selected code element to its ad
ment of said discs, and said resilient means returning said
discs after said tilting, to an initial position on said sup 30 justed position.
port.
12. The subject matter of claim 11 wherein said mem
5. In a mechanical memory having a plurality of wheels
bers are discs and said code elements are wheels, a shaft
whose positions are adjustable to establish selected codes,
on which said wheels are supported for adjustment to
means to propel said wheels as a group through a con
strained path of travel, the improvement comprising tilt
said one of a plurality of positions, and means to move
35 said shaft and its Wheels as a unit in a constrained path
ing means having members to adjust the positions of se
of travel during a portion of which said wheels become
lected wheels while the wheels are being moved as a
interleaved with said discs so that a portion of the face of
group, and means for rotating said members in coordina
each disc is available to bear against a face of its Wheel
tion with the motion of the group of wheels.
and adjust the position of the wheel in response to tilt
6. A mechanical memory to control the functions of a 40 ing movement of the disc.
13. In a mechanical code assembly having stationary
remotely located machine, said memory including a frame,
?rst code means connected to said frame, second code
code means and movable code means cooperable with
means movable with respect to said ?rst code means, said
said stationary code means, where said movable means
second code means having a plurality of wheels which are
include a shaft having a plurality of code elements on
adjustable to one of a plurality of possible positions, said 45 said shaft which are adjustable to selected positions to
wheels adapted to interrogate said ?rst code means and
establish a code, means for moving said shaft and said
produce a mechanical displacement upon coincidence of
elements as a group in a predetermined path to inter
the wheels with said ?rst code means, means responsive to
rogate said stationary code means, means to adjust said
said displacement for producing an output adapted to be
elements during a portion of their movement, said ad
applied to the remote machine, a rotary support connected 50 justing means including a support transverse to said path
with said frame, a plurality of members, means coupling
and parallel to said shaft, tilting members on said sup
said members to said rotary support for rotation therewith
port for the elements to be adjusted, said tilting mem
and for tilting movement, selectively operable means to tilt
bers being in planes parallel to the planes of said code
selected members and thereby adjust corresponding se
elements, means for moving said support and said tilting
55
lected wheels to one of said positions thereby establishing
members in coordination with the movement of said
the code of said movable code means, and means con
group of elements, and means for tilting said tilting mem
nected with said support and with said means for moving
bers when said code elements are alongside of said tilt
said movable code means so that the rotation of said mem
ing members and during the movement of said support
bers is synchronized with the movement of said movable
and said tilting members to thereby adjust said code ele
code means.
60 ments on said shaft.
7. The memory of claim 6 and power input means con
nected with said movable code means and adapted to be
connected with the remote machine so that the displace
ment of said movable code means is synchronized with 6
the machine to be controlled and so that the rotation of
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,901,089
Rabinow ____________ __ Aug. 25, 1959
2,979,183
Capanna _____ _.. ______ _._ Apr. 11, 1961
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