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
Inventor
Johannes Vermehren
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
Application grantedgrantedCritical
Publication of GB190402172ApublicationCriticalpatent/GB190402172A/en
Length Measuring Devices With Unspecified Measuring Means
(AREA)
Abstract
2172. Vermehren, J. Jan. 28. Calculating-apparatus.-Discs operating counting- wheels are driven by contact with a cone, and can be adjusted in position along the cone so that the numbers registered bear a constant proportion, as required in the operations of multiplication and division. The cone a is driven by a handle band has frictional contact with two or more discs l, l<1>, each mounted with its set of counting-wheels on spindles k, k<1>, carried in frames i, i<1>, which travel on nuts along the screws d, d'. By rotating these screws, the discs can be set at the requisite distances r, r<1> from the apex of the cone, such distances being read off upon scales p, p<1> by pointers o, o<1>, while other pointers n, n' indicate the corresponding readings obtained on the counting-wheels when the cone is rotated.
GB190402172D1904-01-281904-01-28Improvements in Calculating Machines.
ExpiredGB190402172A
(en)
Device for the parallel movement of figures in the form of plates, such as rulers, squares and the like. (Machine-translation by Google Translate, not legally binding)
Improved provision, with change of marks, for the transmission of the movement to the dishes of the tocadiscos devices (Machine-translation by Google Translate, not legally binding)