Society of Motion Picture Engineers : incorporation and by-laws (1927)

Record Details:

Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

Silver Recovery — Hickman and Hyndman 701 second crock. The tank has two openings, one at the bottom to discharge a sludge and one near the top for the overflow of desilvered hypo. On a small platform near the top crock rests a shallow trough of sodium sulphide solution. A tube leading from the outflow limb of the syphon dips into the sulphide and conveys a measured portion into the hypo each time the syphon flushes. The sulphide trough is fed by a chicken-feed . arrangement from two large bottles on a shelf fi-i R- FiG. 2. Detail of Syplion. above. Filters at the base of the tank complete the outfit. The general assembly is pictured in Fig. 1, while the syphon, with dimensions adequate for a maximum of one hundred gallons per hour, is shown in Fig. 2. A detailed description of the action will now be given. Referring to Fig. 2, pipes A and B convey hypo and all the available spent developer to the top crock. The acid hypo generally contains hardener and will on neutralization produce a precipitate of aluminum hydroxide or chromium hydroxide according to whether