Tender-mounted sound system for toy steam locomotive
First Claim
1. In combination, a toy steam locomotive comprising first wheel means including at least one pair of laterally spaced wheels of one diameter, a tender for said locomotive including second wheel means including at least one pair of laterally spaced wheels of another diameter, sound generating means carried on said tender, switch means in circuit with said sound generating means, and means mechanically connected to said second wheel means for opening and closing said switch means to energize and de-energize said sound generating means in a synchronized relation with the rotation of said first wheel means, said means for opening and closing said switch means including a first rotatable member of one diameter and a second rotatable member of another diameter, the ratio of said last-mentioned diameters being inversely proportional to the ratio of the diameters of said first and second wheel means.
8 Assignments
0 Petitions
Accused Products
Abstract
The sound-of-steam producing system is completely mounted on the tender intended to be pulled by a toy electric locomotive. The system includes a switch mechanism included in the circuit of a module which energizes a speaker to simulate the puffing sound of a real locomotive. The switch mechanism is opened and closed by a roller mechanism comprising a pair of rollers having their diameters ratioed in accordance with the relative diameters of the locomotive'"'"'s drive wheels and the tender'"'"'s wheels, whereby the puffing sound is precisely synchronized with the rotation of drive wheels of the locomotive.
10 Citations
12 Claims
- 1. In combination, a toy steam locomotive comprising first wheel means including at least one pair of laterally spaced wheels of one diameter, a tender for said locomotive including second wheel means including at least one pair of laterally spaced wheels of another diameter, sound generating means carried on said tender, switch means in circuit with said sound generating means, and means mechanically connected to said second wheel means for opening and closing said switch means to energize and de-energize said sound generating means in a synchronized relation with the rotation of said first wheel means, said means for opening and closing said switch means including a first rotatable member of one diameter and a second rotatable member of another diameter, the ratio of said last-mentioned diameters being inversely proportional to the ratio of the diameters of said first and second wheel means.
- 9. A toy tender for connection to a toy steam locomotive, the tender comprising a sound-of-steam module, a first pair of laterally spaced wheels, a second pair of laterally spaced wheels, an axle on which said first laterally spaced wheels are mounted, an axle on which said second laterally spaced wheels are mounted, at least one of said second wheels and its said axle being of metal, a rotatable member of one diameter mounted on said first axle for rotation therewith, a second rotatable member having a different diameter engaged with said first rotatable member, a metal shaft, said second rotatable member being mounted on said shaft, a cam also mounted on said shaft, a resilient metal strip having one end portion engageable with said shaft when said cam is in one rotated position and separated from said shaft when said cam is in a second rotated position, another portion of said metal strip bearing against said second axle, and means electrically connecting said shaft to said sound-of-steam module, whereby a circuit is interrupted through said module when said cam engages said one end portion of said strip and a circuit is completed through said module when said one end portion is permitted to engage said shaft.
Specification