{"id":52,"date":"2008-07-22T08:43:04","date_gmt":"2008-07-21T22:43:04","guid":{"rendered":"http:\/\/blog.dbohs.com\/?p=52"},"modified":"2008-12-28T12:09:27","modified_gmt":"2008-12-28T02:09:27","slug":"welding-lev-in-1892","status":"publish","type":"post","link":"https:\/\/blog.dbohs.com\/?p=52","title":{"rendered":"Welding LEV in 1892"},"content":{"rendered":"<p>Few welding operations have any sort of local exhaust ventilation and fewer have <!--more-->eye protection built in. The picture below is from the 1982 patent drawings for electric arc welding. Note that <strong>Local Exhaust Ventilation<\/strong> (LEV) and <strong>eye protection<\/strong> are both built in. We have not come that far in over 100 years.<br \/>\n<a href=\"http:\/\/blog.dbohs.com\/wordpress\/wp-content\/uploads\/2008\/07\/weld18921.png\"><img decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-60\" title=\"welding LEV 1892\" src=\"http:\/\/blog.dbohs.com\/wordpress\/wp-content\/uploads\/2008\/07\/weld18921.png\" alt=\"Welding LEV 1892\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Few welding operations have any sort of local exhaust ventilation and fewer have<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[6,13,32],"tags":[47,265],"class_list":["post-52","post","type-post","status-publish","format-standard","category-eye-protection","category-industrial-ventilation","category-welding","tag-lev","tag-welding","czr-hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"Few welding operations have any sort of local exhaust ventilation and fewer have eye protection built in. 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