close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2133247

код для вставки
Oct. 11, 1938.
E. R. FREEBERG
2,133,247
VARIABLE T IMER
Filed July,r 3, 1935
272
278
fawn r R! Ike-same
6%3
I ,,
ATTORNEY.
Patented Oct. 11, 1938
2,133,247
umrso STATES ~ PATENT OFFICE; _ '
2,133,247 ‘
VARIABLE TIMER
Ernest Richard Ih'eeberg, Moline, IlL, assignor to
Eagle Signal Corporation, Moline, 111., a cor,
poration of Massachusetts
>
Application July 3, 1935, Serial No. 29,824
22 Claims. (Cl. 200-27)
- This invention relates to variable timers, and will thereafter act to automatically accomplish
more particularly to those utilized, in connection attainment of the selected operating speed.
with the-signaling systems adapted for control
Another important object is to provide a vari
. ling the movements of highway tramc, for super
able timer with speed changing facilities includ
5 vising or maintaining a plurality of individual
traillc signal control mechanisms, for diverse
4 intersections, in predetermined functional rela
tionships one to another.
Variable timers heretofore available for super
/
10 vising groups of traf?c signal control mechanisms,
such asthose groups ordinarily utilized ‘at high
way intersections for effecting so-called "progres
sive” control of the displays of signalaspects,
have embodied features exceedingly intricate and
15 complicated in character, as exemplified by the
clutches, oil baths, solenoids and the like, which
have been employed foreifecting revisions of the
cycle or operating speed ofv such. timers.
Furthermore, such complexities ‘of character‘
'20 have resulted in the adoption of designs and
methods of manufacture which have'rendered the
resultant mechanism subject to undesirably fre
quent disarrangement and, when disarranged,
requiring the services of those highly skilled and
25 having special training for effecting repair and
readjustment.
It is, therefore, an important object of this
invention to provide a variable timer of simple,
sturdy and compact design, such as will be readily
30 susceptible to adjustment, maintenance and/or
‘repair, by persons of ordinary intelligence, with
out recourse to special facilities.
It is another important object of this invention
to provide a variable timer capable of effecting
35 a plurality of types of operating cycles, each dif
fering from another in cycle time or duration,
and each accomplished without the utilization of
complicated speed changing devices. _
_ Another important object of this invention is
40 to provide a variable timer having a constant
speed driving motor, a variable speed timing de
vice and simple, compact change gear mechanism
intermediate the motor and the timing device for
readily effecting diverse operating characteris
tics of said timing device.
Another important object is to provide a vari~
able timer wherein speed changes may be readily
accomplished without manual adjustments other
50 than necessary for selectively indicating the de
sired speed.
_
Another important object of this invention is
to provide selector mechanism which may be
readily set indicative of a comparatively exten
sive revision of timer operating speed, and which
ing delaying mechanism whereby speed changing
adjustments may be accomplished only at spe
ciilc periods in the operation of the timer.
Another important object is to provide a vari
able timer with speed chansing facilities includ-1
ing change limiting mechanism whereby speed 10
changes may be accomplished only in steps of
predetermined magnitude and with predeter
mined relatively timed intervals between changes.
A further important object of this invention is
to provide improved variable timer mechanism
which, for the accomplishment of all, any one or
of any group of the foregoing objects, shall be of
greater effectiveness and reliability, composed of
a smaller number of parts severally characterized
by strength, durability and facility of assemblage,
as well as amenable to a lower cost of 'manufac-l
ture.
Other and more specific objects and advantages
will appear in the following description of an il
lustrative embodiment of this invention or will
be apparent therefrom to those skilled in this
In a preferred embodiment of this invention,
the foregoing objects and others ancillary there
, to are accomplished as follows:
80
A more or less constant speed driving means, ‘
such as a synchronous motor, is provided for
driving a splined or slotted shaft upon which
gear changing mechanism is so keyed or secured
as to be rotated thereby while slidable along
the length of said shaft.
A group of gears of successively diverse sizesis
?xed upon a shaft adjacent to said splined shaft
in such order as to present the general outline of
a truncated cone, and preferably in such rela
tive arrangement that at some point of the cir
cumference thereof, the teeth of all gears will be
in alignment.
A gear is slidably supported and driven by said
splined shaft, and has operatively associated
therewith a‘ pinion with a partially bevel face;
which gear and pinion are so supported that they
will retain operative relationship throughout
movement of said pinion to positions where it
may mesh with and thereby drive various ones 50
of said cone of Bears.
A cam shaft, having a series of cams ?xed
thereon for controlling desired circuits, is geared ,
to the shaft upon which said cone of gears is
fixed.
_
'
9,133,214.?
2
Selector mechanism including a notched ro
Ill of motor M and which meshes with a worm
tatable dial having an attached barrel further wheel I“; a pinion I", which with the worm
includes two oppositely tensioned sprirms re
wheel I“ is ?xed upon a shaft I"; and a gear
spectively associated with two arms which, in III], which is ?xed upon a shaft III and which
turn, lie in the path of a pin-moving with a,__ meshes with'a pinion Ill.
.
‘
gear. vSaid gear meshes with a gear rack car
Change gear mechanism G is supported upon
rying a shifting fork whereby, through said gear the shaft II! and a guide rod I" for asliding
pin, said gear, said gear rack and said shifting movement lengthwise on said shaft and rod;
fork, said springs urge movement, of said arms said rod being supported in ?xed relation to
to actuate said gear changing mechanism re
said shaft, and said shaft having a spline or 19
sponsive .to presettings of said selector mecha
key way ill formed therein for said portion of
nism. As ‘a result of such urge, said beveled its length as will permit suitable movement of
pinion is moved. into engagement with that said change gear mechanism along the length
cone gear representative of the desired timer
15 operating speed to which said selector mecha
20
thereof, as will be‘ hereinafter more fully ex
plained.
nism is at any time preset; such movement of
the pinion also serving to so place the gear
train as to maintain suitable cooperative rela
thereby, and further includes arm's III, III’,
tionship therewith.
which are Journaled upon the shaft “2.
-
Change delay mechanism is provided which in
cludes a change delay shaft having ?xed there
on a- group of disc-like members so associated
as to form a drum-like structure which will be
hereinafter referred to as a "delay drum”.
25 Raised segmental sections or portions carried .by
these disc-like members are disposed in progres
sively presented relationship so as to‘ provide a»
generally spiral eifect about said structure.
The delay shaft is geared to said cone gear
shaft for rotation at a speed preferably some
what slower than that of said cone shaft.
A guide tongue associated with said gear
changing mechanismv is arranged to engage the
sides of the raised portions of said disc-like mem
bers to the end that movement of said- gear
changing mechanism ‘along said splined shaft
from one associated cone gear to another is
permitted to occur only in steps predetermined
as to magnitude and as to timed relationship
with
of these
the steps
rotation
being
of said
preferably
gear. cone;
such thatthey
will occur only during the portions of the revolu
Said change gear mechanism includes a head
I“ which engages the rod Ill to be guided
A guiding tongue I32 is carried by the head
H4 and is pivoted at I29 for a purpose which
will be hereinafter more fully explained. This
tongue is so formed and supported that it may
be swung around said pivot by and out of the
path of an engaging one of the projecting por
tions I88, I”, etc; A flat spring I3! is so asso
ciated with said tongue, and of I tension such_
as to overcome any tendency thereof to swing
due to the friction between said tongue and the
side of any of said raised portions, while per
mitting said tongue to be swung out of the path
of any raised portion if engaged by the leading
end thereof.
The pinion III is situated between the arms
III, II!’ of the mechanism G, so as to move'
therewith along the length of ‘the shaft “2;
said pinion I20 engaging the spline or key way
iii therein-so as to be rotated thereby. Agear I2!
is journaled upon a stud I24 between said arms
H8, H8’ and meshes with the pinion l2l._, A 40
beveled driving pinion I” is iournaled upon a
stud I28, and is also situated between said arms
tion of the gear cone when the‘ aligned-teeth
H8, H8’ and meshes with the gear I22 to be
thereof are presented to the beveled faced‘ pinion.
For the purpose of facilitating a ready under
driven thereby.
formed therein conventional spur gear teeth Ill‘
standing of this invention and what are con
sidered to be its novel characteristics, an embodi
gear teeth Iii".
ment thereof is represented in the annexed
drawing and hereinafter described. Such embodi
ment, though practical, is by no means the only
one which the invention may assume, wherefore
the invention is not con?ned to any particular
degree of conformity with the more or lea dia
Said driving pinion III, has
and, cut in alignment therewith, spur beveled 45
A shaft I" has fixed thereon twelve gears I42,
I“, ill, I“, I", I52, I", I", I", I“, it!
and I“ of progressively diverse size, and‘ so
relatively positioned on said shaft as to col
lectively form, in effect, a truncated “gear cone”
with the various components of which the pin
grammatic representation, of the drawing but - ion ill may be brought into meshing relationship
by movement of the change gear mechanism G
55 may be changed and ‘modi?ed in various par
ticulars, so long as such changes and modi?ca
along the splined shaft “2. Said gears are fur 55
tions make no material departures from the in
,ther so relatively ?xed upon said shaft that,
vention as more particularly set forth in the an
when the parts are positioned as shown, there
nexed claims.
will be substantial alignment between the teeth
In the accompanying drawing, Figure 1 is a - of all of said gears which are then in position to
60
diagrammatic, isometric representation of a be engaged by the pinion ill; to the end that.
variable timer embodying this invention, with when the shaft I" is so positioned, movement of
certain parts exaggerated in scale and/or cut the pinion iil from one to another of said gears
away in section to more clearly disclose the in
will be facilitated.
65 tended relationships and the functions of the
The arms IILHQ' are so associated with the
mechanism, and
change gear mechanism G that they may rock
Fig. 2 is a fragmentary detail view of certain around the shaft “2 to an extent su?icient to
parts of Fig.- 1, showing a preferred form of a carry the stud III to all of the positions which it
part thereof.
should assume'in order that the pinion I” may
This variable timer is of a type which is some
70
be brought into suitable driving relationship with 70
times referred to by the term “master timer", and any one of the cone of gears carried by the shaft
comprises a synchronous motor M for impart
Ill; said arms being urged, as by gravity, to
ing rotation to a shaft “2, at a suitably con
swing around the shaft III in such direction as to
stant speed, through reduction gearing compris
16 ing a worm gear |l2,_which is ?xedupon a shaft
carry the pinion vIll toward the gears of said
cone.
2,188,247
A gear I88 and a pinion I88 arealso ?xed upon
the shaft I40; Gear I 88 acts through an inter
mediate gear I10, an intermediate pinion Ill
and a driven gear I12 to rotate a cam shaft I14.
Pinion I88 acts through 'an intermediate gear
I18, an intermediate pinion I18 and a driven
gear I80 to rotate a shift delay shaft I82 upon
which said gear I80 is ?xed.
I
The train~ of gears comprising gears I88, I10,
I18 'and I80 may be such as to effect a suitable
gearing reduction ratio. As shown, such ratio
is six to one'between shafts I40 and I82 or, in
other words, such gearing e?ects a reduction
which will make it necessary for shaft I40 to
15 complete six revolutions for eachdrevolution com
,
,
3
tacts 2I2 will ‘be closed only while the raised
portion of said cam is withdrawn from the path
of said arm. Contacts 2 it are so associated'with
the contact arm 208 that when the free end of
said arm is supported by the raised portion of
cam 202, said contacts will be closed, and a
spring 2“ is so applied to said arm that when
the raised portion of said cam is withdrawn from
the free end thereof, the contacts 2 I8 will be sep
arated. The cams 200, 202 are fixed-upon the
sha.'t I14; and, although here shown as being of
plain disc type, these cams may be of any well
known construction, either‘ solid and fixed‘ as
shown, or adjustable.
Selector mechanism 8 is provided for effecting 5
pleted by Shaft I82.
A shift delay drum D is ?xed upon the'shaft
I82. This drum comprisesa unitary assembly
desired speed revisions. ’ This mechanism vin
cludes a notched disc 280 and a barrel or sleeve
including circular end discs I84‘, I88, and a group
20 .of guiding discs with eleven associated segmental
raised portions of which the ?ve nearest the right
end and‘ the four nearest the left end of‘ the group
are shown and respectively numbered I88 to I82
'_ and I95 to I 88. These raised portions are so situ
25 ated as to form abutments for the tongue I82, for
thereby obstructingmovement of the head II4
lengthwise the rod I I6 and the shaft H2, and are
so situated that the pinion I80 will be positioned
in proper meshing relationship with an appro
30 priate one of the cone gears when said tongue
ly of said shaft. A-?at coiledspring 288 is con
tained within said barrel and has the inner end
thereof attached to the shaft 284 and the outer
end secured to the inner surface of said barrel
282, so that counter-clockwise displacement of
saidbarrel with relation to said shaft will wind
is situated between the paths of rotation of any
adjacent two of said raised portions. The cir
cumferential length of saidraised portions should
. .be such that, due to the rate of'rotation of said
85 drum D, a desired length of time will elapse be
tween permitted steps in' the movement of the
pinion I80, as it is carried from one to another
of the cone gears. As shown, each of these raised
' portions has a circumferential length of approxi
mately one-half of the periphery of the drum D.
The circumferential positioning of the raised
portions of said drum D is further such, with re
gard to the gearing ratio between shafts I40 and
I82, that whenever, during rotation of shaft I82,
the trailing end of any one of‘ said projections is
withdrawn from the path of the tongue I82, the
cone of gears carried by the shaft I40 will then
be in such portion of a revolution that the aligned
teeth thereof will be in the path of axial move
ment of the pinion I80, so as to facilitate transfer
50 thereof from one to another of said gears.
The length of the raised portions of said drum
D may be, as indicated in Fig. 1, approximately
one-half of the circumference; however, best re
sults will be obtained, for reasons hereinafter
55 more fully explained, if said raised portions ex
tend nearly around said drum, as indicated in
Fig. 2, the leading end of each projection being
spaced from its trailing end by a distance slightly
greater than the width of the tongue I82, so that
80 said tongue may freely pass therebetween.
In any event, the end~spaces of the adjacent
raised portions should’ be circumferentially dis
placed one from another, so as to provide a spiral
e?'ect; or the surfaces of the drum D otherwise
so formed as to include structure presenting a
generally spiral effect and situated in the path of
and for governing axial movement of said tongue
I82, to thereby establish a progressive timing for
movement of said tongue.
70
Circuit controller mechanism is provided, com
prising cams 200, 202 and contact arms 204,
208 Journaled upon a pivot shaft 208. 'The con
tat-ion, together with the barrel 282, independent
said spring.
-
'
_
A sleeve 244 is freely iournaled upon said shaft
284. A second ?at coiled spring 248 has the inner
end thereof secured to said sleeve and the outer
end thereof‘ secured to said barrel 282 so that
clockwise displacement of said drum with rela
tion to said sleeve will wind said spring.
I
A gear 242 is situated adjacent to the barrel
282 and is freely journaled upon the shaft 284. A
gear rack 258 meshes with said gear 242, and is
‘carried by a guide bar 258 of cross section suited
for slidable cooperation with a groove in a suit
able support (not shown). A shifting fork 280
moves with said rack and bar and engages the
supporting head H4 for moving same along the?
length of the shaft II2.
'
A pin 240 ?xed in the gear 242 projects from '
said gear into the barrel 282.
Arms 288 and 248 are ?xed upon the shaft 284 45
and the sleeve 244, respectively, in such relation
ship that the springs 288 and 248 are at all times
somewhat tensioned for urging counter-clockwise
movement ‘of the arm 288 and clockwise move
ment of the arm 248; the free ends of these arms
extending into the path of movement of the pin
240.
A limiting block 280 is ?xed upon the inner
surface of the barrel 282 and extends into the
paths of the free ends of the arms 288 and 245; 55
the form of said block being preferably such that,
when in radial alignment with the pin 240, it
will insure separation of the arms 288 and-248 '
as great as or somewhat in excess of that which 60
would be caused by said pin 240.
A locking lever 212, pivoted independently of
the-disc 280 at.214, carries an operating handle
218 and is provided with a locking projection 218
for engaging one oranother of the notches 280 65
‘formed in the periphery‘oi'v the disc 280, to there
by retain said disc in positions respectively rep
resentative of the various ones of the available
operating speeds for the cams 200, 202.
Conductors 288, 288 lead from the motor M to
a suitable current supply source.
Conductors
288, 280 and 282, 284 lead from the respective
with, vand a spring 2I0 which urges movement of
pairs of cam controlled contacts 2I2 and M8 to
such external current paths as are to be con
said arm toward the cam 200, so that the con
trolled thereby.
tact arm 204 has contacts 2I2 associated there
75
282 which moves with-and is supported thereby.
Said disc has indicia associated with the notches
therein and-is Journaled upon a shaft 284 form
75
4
mean": ,
Operation
gear 242 will urge movement to the left (as
Assuming that current of suitable character
istics' is applied. through the conductors 288, 288
for causing the motor M to operate at intended
shown bythedrawing) of the rack 288 and
the parts _ operatively associated therewith, so
that the tongue I82 will be moved to the left
speed, and that the-parts are positioned as shown
until it encounters the one of the segmental
in the drawing, operation of the variable timer
raised portions then situated in its path.
hereinbefore described will be as follows:
'
_
i
If, at such time,-the parts are so positionved
Motor M will cause shaft I00 and‘ worm- gear that theraised portion m is in. the path of ' '
I02
to be rotated in the direction indicated by the .the tongue I82, the pinion I88.wi1i continue to
10
arrow. at a suitably constant speed. Gear I02 engage the gear I48 until said raised portion 10
will act through wheel I04, shaft I08, pinion I08 I88 is withdrawn from the path of said tongue
and gear IIO to rotate splined shaft II 2. Pinion I82, when said pinion I80 will be carried into
I20, gear I22 and beveled driving pinion I80 will engagement with the gear I48. This action will
thus be caused to rotate pursuant to the rotation ' occur at a time when the teeth of these gears -'
15 of shaft II2 vand thereby to effect corresponding which are presented to said pinion are in align ll
rotation of cone gear I48 and of .the shaft I40.
ment.
Such rotation of the shaft‘ I40 will be trans
mitted‘to shaft I82 through the gear 'train I68,
I18—-I18, I80, and to cam shaft I14 through the
20
train of gears I88, I10, HI and I12. The cams
200, 202 will thus be caused to rotate at desired
speed in counter-clockwise direction due to the
speed of rotation of the motor shaft I00, which
shaft drives said cams through the gear ratio in
25 dicated by the drawing. The operating cycles
or revolutions of these cams will be accomplished
in '77 56 seconds so long as the disc 280 of the
selector mechanism S is positioned (as shown)
' with the one of its notches 280 which is midway
30
between the indicia 15 and 80 positioned for
engagement by the projection 218 of lever 212.
From the foregoing it will be evident that
the condition of the current paths through con
ductors 288, 290 and 292, 294 will be subjected,
35 every 77% seconds, to the cycle of changes repre
'sented by the contours of the cams 200, 202. It
will also be evident that the timing of such cycles
will be accurately accomplished.
.
For changing such timing, the projection 218
40 should first be swung away from the disc 230,
by grasping the handle 218 carried by the lever
212, and said disc should then be so rotated as to
bring in alignment with said projection 218 such
'
'
‘
Since, as hereinbefore explained, a gearing
ratio has been indicated by the drawing, be
tween shafts I82 and I40,'such that the former
makes but" one revolution to six revolutions of
the latter, the pinion I80 will thereafter be re
tained, by the raised portion I8I, in driving en-'
gagement with the gear- I48, until the shaft I40
has completed three revolutions, and has again .
brought the aligned teeth of the cone gears into
the path of: the pinion I80; whereupon,- the
raised portion I8I will be withdrawn from the
path of the tongue I82, and the spring 288 act
ing through the intervening parts as already ex
plained will cause the. pinion ~~I80 to be moved
from engagement with the gear I48 and into
engagement with the gear I80. The leftwise
movement of the tongue I82 will then be arrested
by the raised portion I82.
With disc 280 thus retained (by the projec
tion 218) in position representative of a 60 sec
ond cycle, pinion‘ I80 will be moved to the left,
from the position just described, in a succession
of steps each of which is of a magnitude equiv
alent to the relative spacing 'of the respective
- gears I82, I84, I88, I88 and I80 of the gear cone.
For the reasons hereinbefore explained, such
steps will occur singly following respective’ groups i
of three revolutions of the shaft I40, and opera-'
tion, pursuant to the alteration of ratio estab
Thus, for example, if it is desired to shorten lished by such change, will continue until the‘
the cycle time from 771/2 to 60 seconds, the notch pinion I80 reaches and meshes with the cone
280 designated by the indicia 80 should be gear representative of the selected cycle dura
positioned in alignment with the projection 218, tion which, in the foregoing example, would be
50 and the lever 212 should then be rotated to its gear I80 representative of a .60 second cycle.
The described action of the shaft delay drum
normal position, carrying the projection 218 into
D not only serves to facilitate gear ratio trans
such notch 288.
Such movement of disc 280 and barrel 282 to fers but also serves to prevent sudden or abrupt
the 80 (second) position, will correspondingly occurrence of extensive changes in speed which
55 move both ends of the spring 248; the outer end may be more or less detrimental to mechanisms
affected.
of said spring being directly moved with the bar
By utilizing the drum D in the application of
rel 282, and the‘ block 250 acting through the
arm 248 and the, sleeve 244 to correspondingly this invention for supervising systems comprising
rotate the inner end of said spring, so that there a plurality of tra?lc signal control mechanisms,
will be no resultant alteration in the tensioning changes in the speed of operation cycles of such
mechanisms may be accomplished in easy, grad
thereof.
,
On the other hand, such movement of the disc ual steps without noticeably affecting the so
280 will. through the barrel 282, cause the outer called “progr'essive" tramc movement permitted
by the signals of the system.
end of spring 288 to be rotated in a counter
When~the parts have attained the positions as
clockwise direction.
Since arm 288' (and, therefore, the inner end just described, the pin 248 will cause such posi
tioning of the gear 242 and intermediate parts
of spring 288) may, at this time, move counter
clockwise only as permitted by corresponding that the tongue I82 will be retained substan-~
movement of pin 240, said spring will be “wound” tially midway between the paths of the raised
70 to such extent as the angular displacement of portions I88 and I81; and the pinion I88 will be
the outer end thereof may exceed that (if any) positioned for properly meshing with and effec
then permitted for the inner end thereof by ro
tively driving the gear I88.
tation of the gear 242 responsive to the urge of
Due to the extent in which the diameter of
said spring.
'
gear I48 exceeds that of gear I 88I'it is evident
one of the notches 280 as is representative of the
45 desired cycle time.
71
From the foregoing it will be seen that the
that. upon attainment of the setting Just de
-.
8,188,947/
scribed, the shaft I“ will be rotated more rap
idly, responsive to the same speed of the motor
5
'
tension of the spring _I3I, thus permitting such"
raised portion to pass under the free end of-said
M and parts directly driven thereby; the gearing
tongue. It will be evident, however, that during
the timesaidtongue is beingsoswung, orwhile
being so proportioned that, with this revised
settinglthe cycle time of the cams 203, 202 will
a raised portion is so passing beneath the'free end
thereof, movement of said disc 230 to bring one
When it is desired to increase the cycle length, of
its notches 233 in registering relation to the
the disc 230 of the selector mechanism S should, ‘" raised
portion 21:, will cause the pinion no to I
as hereinbefore described-he so moved that the
relationship with
10 notch representative of the desired cycle dura- ' be moved into proper
of the cone gears and thereby carry the
tion will be in alignment with the projection 218. one
tongue I32 to a, position where its free end will
Such cycle lengthening movement will wind be
moved by the spring I II into the space between
the spring 243 and thereby cause the arm 248
to urge the pin 24I._to rotate the gear 232 in the raised portion which had swung said tongue
15 clockwise direction while notaltering the condi4 out of its path and that raised portion which is
adjacent theretoand nearest in the side thereof
tion of spring 233.
The fork 263 will thus be urged to move from toward which movement of said tongue is urged
be 60 seconds.
'
left to right and, as such movement is permitted _ .
20
by the cooperation of the raised portions I83,
I33, etc. with said tongue I32,v the pinion I33
will be moved, in a manner corresponding to that
hereinbefore described with relation to its move
ment in the opposite direction, \mtil said pinion
is properly meshed with a gear of such diameter
as will enable‘ it- to drive the cams-200, 202 at
the desired speed.
'
Movement of the mechanism G-especially
that from smaller to larger gears-is facilitated
by‘ the bevel cut teeth I33" which serve for
“maintaining continuous driving engagement
during transfer of the pinion I30 between gears
of diifering diameter.
The discs I83 and I33, at the respective ends
of the drum D, serve as extreme limits for the
axial movement of the tongue I32.
When the disc 230 is rotated for the purpose
of changing the cycle length, the first step of the
change may, under certain circumstances, occur
immediately. Such circumstances involve the
responsive to the setting of the disc 230.
-
If it is desired that movements of the tongue
I32 shall be permitted only at a predetermined
stage ofthe rotation cycle of the cams 200, 202,
there should be such ratio‘ between the shafts
I82 and I14 and the spaces between ends of
raised,portions I88, I89, etc. should be so posi
tioned as to become effective for permitting axial
shifting or lengthwise movements of the pinion
I30 only during a desired portion of’said- cam
rotation cycle.
’
The explanations hereinbefore given as to an
illustrative application of this invention to cer
tain of the many possible uses thereof, when con
sidered in connection with the accompanying
drawing, are believed to be fully sufficient to
enable those skilled in this art to apply this in
vention to all situations to which it is suited;
however, as a concrete example of one such ap
plication, attention is directed to the fact that
the variable timer of this invention might well be
utilized as'the "master timer" brie?y referred to
~40 positioning of the drum D so that movement of
in the co-pending application of Harrison I. '
the tongue I32 urged responsive to such rotation
Turner and Carl L. Anderson, Serial No. 755,742,
filed December 3rd, 1934, for Signal controlling ‘~
and duration varying system and ' mechanism ,
therefor.
' of said disc 230 will not be blocked by that one
of the raised portions I33, I83, etc. whose' path
is nearest to said tongue on the side thereof
toward which it‘ is urged.
Thus, if the parts are positioned as indicated
in Fig. l, at a time when the disc 23!! is rotated
counter-clockwise, it is evident that the raised
portion I 90 will not obstruct the resultantly urged
movement of tongue I32, and said tongue will im
mediately move into engagement with raised por
tion m and, if the movement of the disc 23!!
has been such as to call for more than one step
of transfer of the pinion I30, a second step of
movement will thereafter quickly ensue, when the
raised ‘portion ISI is withdrawn from the path
of the tongue I32 by the further rotation of the
drum D.
I
_If, however, the preferred arrangement indi
cated by Fig. 2 is employed, the tongue I32 will
be permitted to move responsive to any revision
of the setting of the disc 230 only at a'time such
that an ensuing step of movement will be prop
erly timed thereafter; and, furthermore, at a
05 time when the aligned teeth of the cone gears
will be disposed in the path of the axial move
ment of the pinion I33.
Should the. leading end of a raised portion I88,
I", etc. encounter the tongue I32 (which might
occur, for example, were the disc230 permitted to
remain in a position presenting a portion thereof
between a pair of the notches 230 to the projec
tion 213) the resultant engagement of the tongue
I32 by such raised portion would cause said
tongue to swing around 1m pivot I29 against the
Claim is made to, and it is desired to secure by '
Letters Patent of the United States of America,
all generic and speci?c features of the invention
shown by the accompanying drawing and as here
inbefore more fully described, including all‘ fea
tures which may, as a matter of language, be said
to fall between the scope of any of the following:' 50
1. In a variable timer; circuit controlling mech
anism; change gear mechanism for causing op
eration of said controlling mechanism at any one
of a plurality of diverse speeds, said gear mecha
nism comprising axially displaced gears of diverse
sizes and a pinion movable lengthwise therealong
for establishing meshing relationship with vari
ous ones of said gears; driving means for'said
pinion; mechanism operable for preselecting the
various aforesaid diverse speeds; shifting mecha
nism responsive to said selecting mechanism for
establishing preselected speeds; and change delay
mechanism comprising a delay drum, means for
rotating said drum, a guide tongue movable with
said pinion axially of said drum, and discontinu
ous annular raised portions distributed axially
along said drum in the path of said tongue and
spaced to permit adjacent raised portions to pass
freely at respective sides of said tongue when said 70
pinion is positioned for meshing relationships
with said gears, the spaces between the ends vof
each raised portion being su?icient to permit said 7
tongue to pass‘ therethrough.
2., In a variable timer; circuit controlling
6
_
2,188,247
' mechanism; change gear mechanism for causing
mechanism comprising axially displaced gears
operation of'said controlling mechanism at any
one of a plurality of diverse speeds, said! gear
mechanism comprising axially displaced gears of
diverse sizes and a pinion movable lengthwise
of diverse sizes arranged with certain teeth oi’ '
all said gears in substantially axial relative align
ment and a .pinion movable lengthwise there-'
along for establishing meshing relationship with -
therealong for establishing meshing relationship
various ones of said gears; driving means for said -
with various ones of said gears: driving means
pinion; mechanism operable for preselecting the
various aforesaid diverse speeds ; shifting mecha
for said pinion; mechanism operable for pre
10
selecting the various aforesaid diverse~ speeds:
nism responsive to said selecting mechanism for
shifting mechanism responsive to said selecting
mechanism for establishing preselected speeds;
establishing preelected speeds; and change relay 10
mechanism for permitting lengthwise movement
and change delay mechanism comprising a delay
drum, means for rotating said drum, 0. guide
tongue movable with said pinion axially of said
of said pinion only during conegear posi
presenting aligned teeth to said pinion.
7. In a variable timer; driving means; circuit
controlling means; ‘change gear mechanism for 15
causing operation of said controlling means at
15 drum, and raised portions carried by said drum
for restraining axial movement of- said tongue
incidental‘to lengthwise movement of said pinion
any one of a plurality of diverse speeds, said
from one to another of said gears, said raised por
mechanism comprising relatively-?xed gears of
tions being circumierentially' displaced one from
diverse sizes arranged in an evenly spaced conical
group, and a pinion associated with said driving
means for rotation thereby, for lengthwise move
ment substantially parallel with the axis of said
8. In a‘ variable timer; circuit controlling
mechanism; change gear mechanism for causing
'25,
operation of said controlling mechanism at any ~ gearsand for meshing relationship with various
oi’ said gears; selecting mechanism oper
mechanism comprising axially displaced gears of ones
able-for preselecting the various aforesaid diverse
diverse sizes and a pinion movable lengthwise speeds of controlling means operation, said se
one ‘of a plurality of diverse speeds,,said gear
‘ therealong for establishing meshing relationship
with various ones of said gears; driving means for
said pinion; mechanism operable for preselect
ing the various aforesaid diverse speeds; shift
ing mechanism responsive to said selecting mecha
nism for establishing preselected speeds; and ,
change delay mechanism comprising a delay'
drum, means for rotating said ‘drum, a guide
3.5 tongue movable with said pinion axially of said
drum, and raised portions carried by‘ said drum
for restraining axial movement of said tongue
incidental to lengthwise movement of said pinion
from one to another of said gears.
4. In a variable timer; circuit controlling
mechanism; change gear mechanism for caus
ing operation of said controlling mechanism at
lecting mechanism comprising an adjustable part,
two oppositely tensioned springs connected with
said part for tensioning responsive to- adjust
ment thereof in one direction and the other, an
abutment moving with said ‘part, and'arms ina
dependently movable for causing the free ends
thereof ‘to engage said abutment and associated
with said springs for spring urged movement to
ward said abutment; shifting mechanism for 're
sponse to preselecting Operation of said select
ing mechanism, said shifting mechanism com
' prising va gear and a rack
meshing therewith, and
a projection moving with said gear and disposed;
in the path of the spring urged movement of 40
said arms for eil'ecting lengthwise movement of
said pinion to establish meshing relationships
any one of a plurality of diverse speeds, said gear representative of preselected speeds; and change
mechanism ‘comprising axially displaced gears of - delay mechanism for at times restraining length
diverse sizes and a pinion movable lengthwise wise movement of said pinion.
therealong for establishing meshing relationship
8. In a variable timer; driving means; circuit
with various ones of said gears; driving means controlling means; change gear mechanism for
for-said pinion; mechanism operable for pre
causing operation of, said controlling means at
selecting the various aforesaid diverse speeds; any one of a plurality
of diverse speeds, said,
shifting mechanism responsive to said selecting mechanism comprising relatively
fixed gears ‘of
mechanism for establishing preselected speeds; diverse sizes arranged in an evenly spaced conical
and change delay mechanism comprising a delay group, and a pinion associated with said driving
‘drum, means for rotating \said drum. a guide means
for rotation thereby, for lengthwise move
tongue movable'with said pinion axially of said
65 drum, and'a raised portion carried by said drum ‘ ment substantially parallel with the axis of said
gears and for meshing relationship with, various
for atr'times restraining axial movement of said ones of ‘said gears; selecting mechanism operable
for preselecting the various aforesaid: diverse
5. In rvariable timer; circuit controlling speeds or controlling means operation; shifting
mechanismrchange gear mechanism for causing mechanism for response to preselecting operation
operation of said controlling mechanism at any'
of said selecting mechanisms, said shifting mecha
one of a plurality of diverse speeds, said gear nism comprising a gear and a rack meshing
mechanism comprising axially displaced gears of therewith for-e?ecting lengthwise movement of
diverse sizes and a pinion movable lengthwise said, pinion to establish meshing relationships
therealong for establishing meshing relationship representative of preselected speeds; and change
tongue.
I
'
'
with ‘various ones of said gears: driving means
delay mechanism for at times restraining length‘
for said pinion; mechanism. operable for pre
selecting the various aforesaid diverse speeds:
shifting mechanism responsive to said selecting
wise movement of said pinion.'
9. In a variable timer: driving means; circuit
mechanism for establishing- preselected speeds:
for causing operation of said controlling mech
anism at any one of a plurality oi diverse speeds. 70
said gear mechanism comprising relatively ?xed
70 and change delay mechanism for
straining lengthwise movement of said pinion,
6.'In a variable timer; circuit controlling
mechanism; change gear mechanism for causing
operation of said controlling mechanism at any
15 one of a plurality of diverse speeds, said gear
controlling mechanismchange gear mechanism
gears oi’ diverse sizes arranged in an evenly
spaced conical group; and a pinion associated
with said driving means for rotation thereby, for
lengthwise movement. substantially parallel with 76
9,188,247
7
the axis of said gears and for meshing relation
ship with various ones of said gears; selecting
mechanism operable for preselecting the various
aforesaid diverse speeds; shifting mechanism for
response to preselecting operation of said select
drum, the surface of said drum including struc
ture for governing axialmovement of said tongue.‘
ing mechanism for e?ecting lengthwise move
one of a plurality of diverse speeds, said gear
mechanism comprising axially displaced gears of
mentoi’ said pinion to establish meshing rela
tionships representative of preselected speeds;
and change delay mechanism for at times re
straining lengthwise movement of said pinion.
10. In a variable timer; circuit controlling
mechanism; mechanism for causing operation of
said-controlling mechanism at any one of a plu
rality of diverse speeds; driving means for said
mechanism; selecting mechanism operable ior'
preselecting the various aforesaid diverse speeds;
shifting mechanism operable responsive to said
14. In a variable timer; circuit controlling
mechanism; change gear mechanism for causing
operation of said controlling mechanism at any CI
diverse sizes and a pinion movable lengthwise '
therealong for establishing meshing relationship
with various ones of said gears; driving means
for said pinion; mechanism operable for prese
lecting the various aforesaid diverse speeds; shift
ing mechanism responsive to said selecting mech
anism for establishing preselected speeds; and
change delay mechanism comprising means for
permitting movement of said pinion for changing
its meshing relationship with said gears only in
selecting mechanism for establishing the prese? periodic steps.
'
lected speeds; and change delay mechanism for _ . 15. In a variable timer; circuit controlling
controlling the operation of said shitting mech-' mechanism; change gear mechanism for causing ‘
anism.
operation of said controlling mechanism at any
11. In a variable timer; circuit controlling , one of a'plurality of diverse speeds, said gear
mechanism; change gear mechanism for causing . mechanism comprising axially displaced gears of
operation of said controlling mechanism at any diverse sizes and a pinion movable lengthwise
one of a plurality of diverse speeds, said gear therealong for establishing meshing relationship __
mechanism comprising axially displaced gears of with various ones of said gears; driving means
diverse sizes and a pinion movable lengthwise for said pinion; mechanism operable for prese
therealong for establishing meshing relationship , lecting the various aforesaid diverse speeds; shift
with various ones of said gears; driving means ing mechanism responsive to said selecting mech
30 for said pinion; mechanism operable i'or prese
. anism for establishing preselected speeds; and
lecting the various aforesaid diverse speeds; shitt
ing mechanism responsive to said selecting mech
anism for establishing preselected speeds; and
change delay mechanism comprising a delay
35 drum, means for rotating said drum, and a guide
tongue movable with said-pinion axially of said
drum, the surface of said drum including struc
ture presenting a generally spiral e?ect and situ
ated in the path of and for governing axial move
40 ment 01' said tongue whereby to establish a pro
change delay mechanism comprising means for
permitting movement of said pinion for changing '
its‘ meshing relationship with said gears only in
periodic steps of predetermined magnitude.
16. In a variable timer; circuit controlling‘
mechanism; change gear mechanism for causing
operation of said controlling mechanism at any
one of a plurality of diverse speeds, said gear
mechanism comprising axially displaced gears of
diverse sizes and a pinion movable lengthwise 40
gressive timing for movement of said tongue.
therealong for establishing meshing relationship
12. In a variable timer; circuit_ controlling - with various ones of said gears; driving means for
mechanism; change gear mechanism for causing said pinion; mechanism operable for preselecting
operation of said controlling mechanism at any the various aforesaid diverse speeds; shifting
one of a plurality of diverse speeds, said gear mechanism responsive to said selecting mecha
mechanism comprising axially displaced gears of ' nism ‘for establishing preselected speeds; and
diverse sizes and a pinion movable lengthwise change delay mechanism comprising means for
therealong for establishing meshing relationship permitting movement of said pinion for changing
with various ones of said gears; driving means
50 for. said pinion; mechanism operable for prese
lecting the various aforesaid diverse speeds; shitt
; ing mechanism responsive to said selecting mech
anism for establishing preselected speeds; and
change delay mechanism comprising a delay
55 drum, means for rotating said drum, and a guide
tongue movable with' said pinion axially of said
drum, the surface 01’ said drum including struc
ture presenting a generally spiral eil'ect and situ .
ated in the path of and for governing axial move
ment or said tongue.
'
.
13. In a variable timer; circuit controlling
mechanism; change gear mechanism for causing
operation of said controlling mechanism at any
one of a plurality of diverse speeds, said. gear
65 mechanism comprising axially'displaced gears of
diverse sizes and a pinion movable lengthwise
therealong for establishing meshing relationship
with various ones of said gears; driving means
for said pinion; mechanism operable for prese
70 lecting the various aforesaid diverse speeds; shift
ing mechanism‘ responsive to said selecting mech
anism for establishing preselected speeds; and
change delay mechanism comprising a delay
. drum, means for rotating said drum, and a guide
75 tongue movable with said pinion axially of said
its meshing relationship with said gears only in ,
predetermined relationship to circuitcontroliing
mechanism operation;
17. In a‘ variable timer, driving means, cir
so”
cult controlling mechanism operable by said driv- _.
ing means, speed change mechanism for effecting
variations of the speed imparted to said cron 55
trollingmechanism bysaid driving means, mecha
nism operable for preselecting various diverse
speeds, shifting mechanism responsive to said
selecting mechanism vfor causing said speed
change mechanism to establish preselected speeds, 60
and change delay mechanism associated with said
preselecting mechanism and said speed change
mechanism, said delay mechanism comprising ’
means for establishment of said speed variations
only in periodic steps of'predetermined magni 65
tude and in predetermined relationship to circuit
controlling mechanism operation.
18. In a variable timer, driving means, circuit
controlling mechanism operable by said driving
means, speed change mechanism for effecting
variations oi’ the speed imparted to said con
trolling mechanism by said driving means,
mechanism operablefor preselecting various di
verse speeds, shifting mechanism responsive to
said selecting mechanism for causing said speed 75
8
2,138,247
‘change mechanism to establish preselected speeds, shifting mechanism responsive to said se
"in
speeds, and change delay mechanism associated
with said preselecting mechanism and said speed
change mechanism, said delay mechanism com
prising means for establishment of said speed
variations only in steps of predetermined mag
nitude.
19. In a variable timer, driving means, circuit
controlling mechanism operable by said driving
10 means, speed change mechanism for effecting
variations of the speed imparted to said control
ling mechanism by said driving means, mecha
nism operable for preselecting various diverse
speeds, shifting mechanism responsive to said se
15 lecting mechanism for causing said speed change
mechanism to establish preselected speeds, and
change delay mechanism associated with said
preselecting mechanism and said speed change
mechanism, said delay mechanism comprising
20 means for establishment of said speed variations
only in predetermined relationship to circuit'con
trolling mechanism operation.
lecting mechanism for causing said speed change
mechanism to establish preselected speeds, and
change delay governing mechanism associated
with said preselecting mechanism and said speed 5
‘
change mechanism.
1
21. In a variable timer, driving means, driven
means operable by said driving means and having
a time cycle, speed change mechanism for e!
iecting variations of the speed imparted to said 10
driven ‘means by said driving means, mechanism
operable during the operative cycle of said timer
for preselecting‘diverse- speeds, shitting mecha
nism rendered active responsive to said preselect
ing mechanism for causing said speed change 15
mechanism to establish preselected speeds, and
change delay governing mechanism associated
with said preselecting mechanism and said ‘speed
change mechanism.
22. In’ a variable speed timer, means for et
fecting operation of said timer at any one o! a
plurality of diverse speeds and changing means
20. In a variable timer, drving means, circuit presettable during the operative cycle or said,
vcontrolling mechanism operable by said driving I timer for ei'l’ectlng predetermined alterations of
25 means, speed ,change mechanism for eitecting
variations of the speed imparted to said con
trolling mechanism by said driving means, mecha
nism operable for preselecting various diverse
said timer speed at predetermined intervals, said 25
alterations occurring without turther manipula
tion by an operator.
ERNEST RICHARD FREEBERG.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 344 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа