Improvements in or connected with Talking Machines.
Номер патента: GB191310093A
Опубликовано: 23-04-1914
Автор(ы): William Cowburn, William Laws Cole
Принадлежит: Individual
Опубликовано: 23-04-1914
Автор(ы): William Cowburn, William Laws Cole
Принадлежит: Individual
Реферат: 10,093. Cawburn, W., and Cole, W. L. April 29. Trumpets, arranging and supporting.-In talking-machine horns of the type having resonating- chambers therein, the horn 2 is constructed with an opening 4 in the side wall for the admission of sound from the sound-box, and with one or more partitions 3 leading from the part where the sound-waves enter. A curved passage 5 guides the sound in a direction at right-angles to its path on entering. The horn may directly carry the sound-box, the support for the system comprising an arm 8 pivoted to a post 9, and partly held up by a spring 10.
Improvement in elastic pitmen or connecting-rods
Номер патента: US172903A. Автор: . Владелец: . Дата публикации: 1876-02-01.