Timer

A timer adapted to toy applications, and in particular for use in conjunction with toy ride-on vehicles is provided. The timer includes a spring-driven mechanical motor manually windable to at least a predetermined time duration state and a manually displaceable mechanical switch for the selective stopping and starting of the mechanical motor for the measurement of elapsed time.

BACKGROUND OF THE INVENTION 
This invention relates to timers usable with toys. The play value of a toy 
is greatly enhanced when the use thereof is "timed". The provision of a 
timer for "timing" in the use of toys creates opportunity for contests and 
self-testing not otherwise found in many toys. In the case of toy ride-on 
vehicles such as tricycles and the like, the play value of the vehicle 
would be enhanced if the child could measure the elapsed "time" in 
traversing from one point to another. While numerous sophisticated timer 
arrangements are available, ranging from sophisticated mechanical clock 
arrangements to electronic devices, such timers are not practical for 
application to most toys due to their cost. 
Accordingly, it is desired to provide an inexpensive mechanical timer 
capable of being selectively started and stopped and readily usable by 
children of even a young age. By providing a spring-powered mechanical 
motor and a manually displaceable mechanical member adapted to cooperate 
with said spring motor to selectively start and stop same, the desired 
timer is provided. 
SUMMARY OF THE INVENTION 
Generally speaking, in accordance with the invention, a timer is provided 
including a spring-powered mechanical motor means, means for manually 
winding said motor means to tension the spring thereof, and switch means 
manually displaceable between a first position at which said switch means 
mechanically interengages with said motor means to stop same and a second 
position at which said motor means is free to run to provide an indication 
representative of elapsed time. The motor means may include frame means, a 
coil spring extending about and secured at one end to a drive shaft 
mounted on said frame means and secured at its other end to said frame 
means, step up gear train means supported by said frame means and 
operative by coupled to said drive shaft for driving thereby, and speed 
control governor means operatively coupled to said step up gear train for 
controlling the speed of rotation of said motor in response to the 
relaxation of the tension of said spring means. Said governor may be 
formed with a projection reciprocally displaced over a predetermined path, 
said switch means being displaceable into and out of said path for the 
selective stopping and starting of said motor. 
The switch means may consist of a pivotably mounted member having a pair of 
projections on opposed sides of the axis of pivoting thereof manually 
engageable for the selective pivoting of said member between said first 
and second positions, and a third projection displaced into and out of the 
path of the governor in response to the pivotable displacement of the 
member. 
Accordingly, it is an object of the invention to provide an inexpensive, 
readily operable mechanical timer. 
Another object of the invention is to provide a timer particularly adapted 
for use with ride-on vehicles and capable of manual starting and stopping. 
A further object of the invention is to provide a timer incorporating a 
mechanical spring-powered motor and a mechanical start-stop switch means. 
Still other objects and advantages of the invention will in part be obvious 
and will in part be apparent from the specification and drawings. 
The invention accordingly comprises the features of construction, 
combinations of elements, and arrangement of parts which will be 
exemplified in the constructions hereinafter set forth, and the scope of 
the invention will be indicated in the claims.

DESCRIPTION OF THE PREFERRED EMBODIMENTS 
The timer 10 in accordance with the invention is depicted mounted on the 
center post 12 of a ride-on vehicle such as a tricycle, immediately below 
the steering handle bars 14. The timer includes a housing 16 secured to 
said center post 12 by four screws 18. Housing 16 is formed in its top 
surface with a circular recess 20, the bottom surface of which bears 
legends 22 representative of elapsed time in multiples of five, by way of 
example, approximately five seconds. At the lower central portion of 
circular recess 20 is a projecting rib 24 which serves as a stop member 
for a knob 26. Specifically, as more particularly shown in FIGS. 1 and 2, 
knob 26 is formed with a pointer 28 for providing a visual indication of 
elapsed time in cooperation with the legends 22 and a radial projecting 
portion 30 which is adapted to engage stop rib 24. The bottom surface of 
pointer 28 is spaced a sufficient distance from the bottom wall of 
circular recess 20 so as to clear the top of rib 24. 
The bottom surface of circular recess 20 is formed with an aperture 32 
therethrough providing access to the interior of housing 16. A hub portion 
34 of knob 26 passes through aperture 32 and is fixedly secured to the 
drive shaft 36 of a spring motor shown generally at 38. 
Spring motor 38 is provided with a top, essentially planar, frame member 40 
and a U-shaped bottom frame member 42. Top frame member 40 is provided 
with forwardly and rearwardly projecting portions for engagement against 
bosses 44 in the underside of housing 16 and for securing to such bosses 
by means of screws 46. 
The spaced parallel portions of top and bottom frame members 40, 42 of 
motor 38 serve as bridges for supporting drive shaft 36 and the remaining 
shafts of the step up gear train driven thereby. A coil spring 48 extends 
about drive shaft 36 and is secured at its inner end to such drive shaft. 
The outer end of coil spring 48 is formed with a tab 50 which extends 
through an aperture 52 in one leg of the U-shaped bottom housing 42, and 
is fixedly secured to such bottom housing by said tab. In this manner, 
when knob 26 is manually rotated in a counter clockwise direction as 
viewed in FIG. 1, coil spring 48 is tensioned. A first spur gear 54 is 
mounted on drive shaft 36 for rotation therewith and meshingly engages 
with pinion 56 secured to first intermediate shaft 58. A second spur gear 
60 is coupled to pinion 56 for rotation therewith and is in meshing 
engagement with a second pinion 62 mounted on second intermediate shaft 
64. Coupled to second pinion 62 for rotation therewith is a third spur 
gear 66 in meshing engagement with a third pinion 68 mounted on a third 
intermediate shaft 70. It is apparent that the pinion 68 rotates more 
rapidly than the spur gear 54. Intermediate shafts 58, 64 and 70 are all 
supported on frame members 40, 42. If desired, second intermediate shaft 
64 may be mounted in arcuate slots in frame members 40, 42 which permit 
the displacement of said second intermediate shaft and the second pinion 
62 and third spur gear 66 carried thereby in a direction such as to take 
third spur gear 66 out of meshing engagement with pinion 68 during the 
winding of the motor by knob 26. Such displacement would be limited by the 
ends of the slots. Second intermediate shaft 64 and the pinion and spur 
gear carried thereby would be displaced back to the position where spur 
gear 66 is in driving engagement with pinion 68. This arrangement permits 
the winding of the spring motor without rotating third intermediate shaft 
70 and the pinion 68 and star wheel 72 carried thereby. As more 
particularly shown in FIG. 4, star wheel 72 is formed with six arms of 
equal length which cooperate with a speed control governor 74 mounted for 
osciallatory displacement by governor shaft 76 supported between top and 
bottom frame members 40 and 42. Governor 74 is formed with a semicircular 
central portion 78 and a pair of laterally extending end portions 80 and 
82, laterally extending end portion 82 terminating in a bent portion 84 
defining an obtuse angle with laterally extending end portion 82. As more 
particularly seen in FIGS. 3 and 4, bent portion 84 extends outside of the 
spaced intermediate frame members 40 and 42. 
Referring to FIG. 4, as star wheel 72 is rotated in the direction of arrow 
86 by the release in the tension of coil spring 48, one arm thereof 
engages and brushes past corner 88 of governor 74 at the junction of 
laterally extending end portion 82 and semicircular portion 78, thereby 
camming the governor in a clockwise direction as viewed in FIG. 4 to cause 
the governor to pivot in the direction of arrow 90 about the axis of 
rotation of governor shaft 76 to the position shown in chain lines. At 
this position, another arm of star wheel 72 will thereafter engage and 
brush past corner 92 of governor 74, at the intersection therefore of 
laterally extending end portion 80 and semicircular portion 78, thereby 
camming the governor in a counter clockwise direction as viewed in FIG. 4 
to cause the governor to rotate back to the position shown in solid lines 
in FIG. 4. In this manner, the governor is reciprocated rapidly between 
two positions, serving to regulate the speed of rotation of the spring 
motor. The rate of reciprocation is six times (because of the six arms of 
the star wheel), faster than the rate of rotation of the pinion 68 and, of 
course, the governor experiences two oscillatory movements (one clockwise, 
the other counterclockwise) for each cycle of its oscillations. 
Housing 16 is provided with a pair of downwardly projecting, spaced walls 
94 in a region overlying motor top frame member 40 and in registration 
with governor 74. Walls 94 are formed with aligned slots 96 in the bottom 
thereof for receipt of a pivoting axle 98 of a switch member 100. 
Switch member 100 is provided with a pair of upwardly projecting arcuate 
projections 102, 104 terminating in manually operable push contact 
surfaces 106, 108 respectively. Housing 16 is formed with a pair of 
apertures 110, 112, which permit the start and stop projections 102, 104, 
respectively, of switch member 100 to project to the exterior of housing 
16 for manipulation by a user. Downwardly projecting from the arcuate 
projection 104 is a heart-shaped projection 114. The central region of 
switch member 100 is formed with a pair of essentially planar bearing 
surfaces 116 and 120 adapted to engage the top surface of top frame member 
40 at respective first and second positions of said switch member. As 
illustrated in FIG. 3, the switch member is in its second position at 
which heart-shaped projection 114 is positioned in the path of the 
oscillating movement of governor 74, specifically in the path of bent 
portion 84 thereof as shown in FIGS. 3, 4 and 5. In this position, 
projection 114 prevents the further advance of motor 38. After winding, to 
re-start the motor, it is merely necessary for the user manually to engage 
start contact surface 106 of arcuate projection 102 to pivotably displace 
switch member 100 to its alternate orientation, shown in chain lines in 
FIG. 3, wherein planar bearing surface 116 engages the top surface of top 
frame member 40 and heart-shaped projection 114 is out of the path of 
governor 74. In this "start" orientation, the motor is free to run until 
stop contact surface 108 is engaged to displace the switch member 100 to 
the position shown in solid lines in FIG. 3, at which position the motor 
is stopped, to provide an indication of elapsed time as read by the 
position of pointer 28. 
Switch member 100 is provided with central laterally extending slot 122 to 
form a resilient region 124 between slot 122 and bearing surfaces 116, 120 
which permits the displacement of said switch member between its first and 
second positions over bottom corner 126 between said bearing surfaces, to 
thereby provide a positive positioning of the switch member at each of its 
positions. 
While switch member 100 is depicted with two heart-shaped projections 114, 
128, one on each side thereof, only projection 114 is operative. 
Heart-shaped projection 128 is provided for convenience of assembly so 
that the assemblers need not concern themselves with the proper 
orientation of the switch member, and can be eliminated. The orientation 
of the heart-shaped projection 114 permits the proper operation of switch 
member 100 without regard to the orientation of governor 74 at the moment 
of engagement by the user of contact surface 108 since the camming 
surfaces defined by the heart-shaped projection 114 will displace the 
governor to one of the two rest positions shown in FIG. 4. 
The foregoing construction is readily assembled, has few parts, is 
relatively inexpensive to manufacture and is readily used by even the 
youngest child. Accordingly, it both enhances the play value of the device 
with which it is associated while not unduly adding to the cost thereof. 
It will thus be seen that the objects set forth above, and those made 
apparent from the preceding description, are efficiently attained and, 
since certain changes may be made in the above constructions without 
departing from the spirit and scope of the invention, it is intended that 
all matter contained in the above description or shown in the accompanying 
drawings shall be interpreted as illustrative and not in a limiting sense. 
It is also to be understood that the following claims are intended to cover 
all of the generic and specific features of the invention herein 
described, and all statements of the scope of the invention which, as a 
matter of language, might be said to fall thereunder.