Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7814/27A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Publication of GB269870ApublicationCriticalpatent/GB269870A/en
Casting Or Compression Moulding Of Plastics Or The Like
(AREA)
Abstract
269,870. Lutyens, L. C. April 20, 1926, [Convention date]. Rolling-machines; processes; heating apparatus.-Bituminous materials or mixtures, such as described in Specification 238,586, [Class 22, Cements &c.], are moulded into sheet form by applying the material in plastic condition to an endless travelling apron or table and causing the latter with its layer of material to pass between water sprayed rollers and through a cold water bath and also between means adapted to prevent cooling of the edges of the sheet and to restrict the lateral extent of the layer. As shown, the apparatus comprises a fabric band a passing around rollers b, c, d supported by a vessel g formed with a well h containing the roller d and supplied with cold water through a pipe i. The band passes between pairs of rollers e, f cooled by water sprays l. Side cheeks m, heated by gas jets m<1>, restrict the lateral extent of the sheet and prevent undue cooling of the edges. The mixture described in the Specification referred to is rendered plastic by heating to 400‹ F before applying it to the band.