1.0JeopardyAnswers.orghttps://jeopardyanswers.orgjeohttps://jeopardyanswers.org/author/jeo/Going up? Going down? He made elevators more secure with his invention of a safety brake - JeopardyAnswers.orgrich600338<blockquote class="wp-embedded-content" data-secret="TdQVBALUk6"><a href="https://jeopardyanswers.org/going-up-going-down-he-made-elevators-more-secure-with-his-invention-of-a-safety-brake/">Going up? Going down? He made elevators more secure with his invention of a safety brake</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://jeopardyanswers.org/going-up-going-down-he-made-elevators-more-secure-with-his-invention-of-a-safety-brake/embed/#?secret=TdQVBALUk6" width="600" height="338" title="“Going up? Going down? He made elevators more secure with his invention of a safety brake” — JeopardyAnswers.org" data-secret="TdQVBALUk6" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
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