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[[start page]] 6 Both sides of disks can be used for records. [[fifteen blank lines]] Copies of phonogram can be made by castings in in type-metal, or [[?]]plaster. [[three blank lines]] Disks can be used several times over for records, or until too thin for use. [[three blank lines]] Axis of instrument turned by clock-work-- [[four blank lines]] [[end page]] [[start page]] 7 [[centered]] Tuesday Mar. 29-1881 [[/centered]] The disks [[?]]K - can be reversed on the axle E - and both sides utilized - or a new disk can be easily put on. These disks can be very easily manufactured and sold for a small amount -- and are much more convenient than the cylindrical form, as they give the maximum amount of surface with the least bulk, and weight. A disk engraved with speech vibrations upon one instrument, can be placed upon any other [[strikethrough]] instrument [[/strikethrough]] and the sounds reproduced as easily as upon the instrument by which the record was made. Or if the engraved disk is made of some substance that will stand a temp of about 250° Centigrade, [[underlined]] casts can be obtained of the groove in type metal (or plaster [[/underlined]] if it will not stand the temperature of melted type metal) and other disks made from these molds -- If it is not desireable to keep the record cut ^[[in]] the disk, it can be faced off smooth and is then ready for a new record, this can be repeated until the disks are too thin for use. The axis E - (Fig. 1 page 1) can be turned by clockwork if necessary and perfect regularity of speed obtained, as in Edisons instrument -- Noted by S. T. Mar. 29-1881 -- [[annotation in bottom right corner]] [[underlined]] over [[/underlined]] [[/annotation]] [[end page]]
Transcription Notes:
type-metal (type metal)according to dictionary is circa 1790-1800 stating it is an alloy for making printing types