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  <front>
    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-15231</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/15231</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Статьи</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Articles</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Theory of crushing and its application to Jaw Crushers</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Теория дробления и ее применение к щековым дробилкам</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Levenson</surname>
            <given-names>L. B.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Левенсон</surname>
              <given-names>Л. Б.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Levenson</surname>
              <given-names>L. B.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru"> (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en"> (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="1926-01-01">
        <day>01</day>
        <month>01</month>
        <year>1926</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1926</year>
      </pub-date>
      <volume>7</volume>
      <issue>1</issue>
      <fpage>137</fpage>
      <lpage>185</lpage>
      <history>
        <date date-type="received" iso-8601-date="1925-07-22">
          <day>22</day>
          <month>07</month>
          <year>1925</year>
        </date>
        <date date-type="accepted" iso-8601-date="1925-09-10">
          <day>10</day>
          <month>09</month>
          <year>1925</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1926-01-01">
          <day>01</day>
          <month>01</month>
          <year>1926</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1926 Л. Б. Левенсон</copyright-statement>
        <copyright-statement xml:lang="en">© 1926 L. B. Levenson</copyright-statement>
        <copyright-year>1926</copyright-year>
        <copyright-holder xml:lang="ru">Л. Б. Левенсон</copyright-holder>
        <copyright-holder xml:lang="en">L. B. Levenson</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/15231">https://pmi.spmi.ru/pmi/article/view/15231</self-uri>
      <abstract xml:lang="ru">
        <p>В статье даны некоторые теоретические основания для технического расчета и для критической оценки щековых дробилок. Общие достоинства щековых дробилок — большая производительность, простота конструкции, дешевизна и простота ремонта; недостатки — периодичность работы и наличие больших качающихся масс, что производит сильный шум при работе и вызывает сотрясения здания фабрики. Поэтому вопрос об уравновешении щековой дробилки весьма важен для практики. Обычно одна щека устанавливается неподвижно, а другая получает качания от приводного механизма. Автор рассматривает конструктивные типы щековых дробилок, расположение и форму щек, дает определение наивыгоднейшей скорости вала, производительность и расход энергии и другие показатели (см. статью).</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The article provides some theoretical foundations for the technical calculation and critical evaluation of jaw crushers. The general advantages of jaw crushers are high throughput, simplicity of design, low cost, and ease of repair; the disadvantages are the intermittent nature of operation and the presence of large oscillating masses, which generate strong noise during operation and cause vibrations in the factory building. Therefore, the issue of balancing a jaw crusher is very important for practice. Typically, one jaw is fixed, while the other receives oscillations from the drive mechanism. The author examines the design types of jaw crushers, the arrangement and shape of the jaws, and defines the optimal shaft speed, throughput, energy consumption, and other parameters (see the article).</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>-</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
  <back>
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</article>
