Arithmometer
Maker and role
C. & E. Layton, Manufacturer
See full details
Object detail
Accession number
1966.165
Maker
Description
"Arithmometer", machine for calculating tables, additions, subtractions, etc., in wooden case 23½" long x 9" wide. Carrying handles at each end. Also instruction book.
The face of the machine is divided into two portions, the lower one called the FIXED PLATE, and the upper one called the CARRIAGE.
The upper holes of the CARRIAGE are called the PRODUCT HOLES because they are serviceable chiefly in multiplication, and the lower ones QUOTIENT HOLES, because they are serviceable chiefly in division. Each hole is accompanied by a STUD, which can be used when the CARRIAGE is raised to shift the figures engraved on the dial.
At the right side of the carriage is the EFFACER, for the QUOTIENT HOLES, and on the left hand side the EFFACER for the PRODUCT HOLES, by means of which the figures in either of the PRODUCT or QUOTIENT HOLES are brought to ZERO. the CARRIAGE must be raised during operation.
At the left hand side of the FIXED PLATE is the REGULATOR, which is pushed forward for addition and multiplication, and pulled back for subtraction and division. The REGULATOR can only be used when the MOTIVE HANDLE is at its proper position of rest over the INDICATING STUD on the FIXED PLATE.
In the centre of the FIXED PLATE are slots, furnished with moveable MARKERS, each of which can be set against any number from 0 to 9.
A number is set on the machine by means of the MARKERS, and thrown up when this number is transferred to the PRODUCT HOLES above by a turn of the HANDLE. A number can be put in the PRODUCT HOLES by means of the STUDS.
When the dials in the PRODUCT and QUOTIENT HOLES and the MARKERS are all at zero, the machine is said to be cleared.
The face of the machine is divided into two portions, the lower one called the FIXED PLATE, and the upper one called the CARRIAGE.
The upper holes of the CARRIAGE are called the PRODUCT HOLES because they are serviceable chiefly in multiplication, and the lower ones QUOTIENT HOLES, because they are serviceable chiefly in division. Each hole is accompanied by a STUD, which can be used when the CARRIAGE is raised to shift the figures engraved on the dial.
At the right side of the carriage is the EFFACER, for the QUOTIENT HOLES, and on the left hand side the EFFACER for the PRODUCT HOLES, by means of which the figures in either of the PRODUCT or QUOTIENT HOLES are brought to ZERO. the CARRIAGE must be raised during operation.
At the left hand side of the FIXED PLATE is the REGULATOR, which is pushed forward for addition and multiplication, and pulled back for subtraction and division. The REGULATOR can only be used when the MOTIVE HANDLE is at its proper position of rest over the INDICATING STUD on the FIXED PLATE.
In the centre of the FIXED PLATE are slots, furnished with moveable MARKERS, each of which can be set against any number from 0 to 9.
A number is set on the machine by means of the MARKERS, and thrown up when this number is transferred to the PRODUCT HOLES above by a turn of the HANDLE. A number can be put in the PRODUCT HOLES by means of the STUDS.
When the dials in the PRODUCT and QUOTIENT HOLES and the MARKERS are all at zero, the machine is said to be cleared.
Marks
LAYTONS IMPROVED ARITHMOMETER / LONDON / PATENT No 12032 1909 BAUERLES PATENTS Nos 1666 & 15261 1907 Inscribed
ON THE / ARITHMOMETER / AND ITS / APPLICATION TO THE CONSTRUCTION / OF / LIFE CONTINGENCY TABLES / BY / PETER GRAY, F.R.A.S., / [...] / SECOND EDITION, WITH APPENDIX. / LONDON: / CHARLES AND EDWIN LAYTON, / FARRINGDON STREET. Printed
ON THE / ARITHMOMETER / AND ITS / APPLICATION TO THE CONSTRUCTION / OF / LIFE CONTINGENCY TABLES / BY / PETER GRAY, F.R.A.S., / [...] / SECOND EDITION, WITH APPENDIX. / LONDON: / CHARLES AND EDWIN LAYTON, / FARRINGDON STREET. Printed
Media/Materials
Credit Line
C. & E. Layton. Arithmometer, 1966.165. The Museum of Transport and Technology (MOTAT).
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