GB189904489A - An Improved Adding Apparatus. - Google Patents

An Improved Adding Apparatus.

Info

Publication number
GB189904489A
GB189904489A GB189904489DA GB189904489A GB 189904489 A GB189904489 A GB 189904489A GB 189904489D A GB189904489D A GB 189904489DA GB 189904489 A GB189904489 A GB 189904489A
Authority
GB
United Kingdom
Prior art keywords
wheel
spring
cam
pin
pawl
Prior art date
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
Carlo Fossa-Mancini
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB189904489A publication Critical patent/GB189904489A/en
Expired legal-status Critical Current

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  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

4489. Fossa-Mancini, C. March 1. Calculating-apparatus.-Relates to adding-apparatus. A series of numeral discs x are advanced by placing a pin between projecting pins at the side of the wheels opposite the number to be added marked on a graduated slot, and moving the pin to the end of the slot ; or, in the form shown in Fig. 3, by pressing a numbered key t, lowering the bar p and rod i more or less, and causing the spring pawl h to slide over a definite number of teeth of the ratchet-wheel a. The return stroke, under the action of the spring w, moves the numeral disc forward. In order to carry the tens from one wheel to the next, each is fitted on its left-hand side with a, say, six-toothed cam q, and the numbers 0-9 are repeated round the discs correspondingly. The cam q belongs to the wheel to the right of the wheel x shown. As the cam rotates, it lifts the lever c, carrying a pawl d, against the action of the spring m, and then suddenly lets it go, advancing the wheel x one unit. A weighted spring detent v with V-shaped tooth n controls the movements of the ratchetwheel x.
GB189904489D 1899-03-01 1899-03-01 An Improved Adding Apparatus. Expired GB189904489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB189904489T 1899-03-01

Publications (1)

Publication Number Publication Date
GB189904489A true GB189904489A (en) 1899-07-01

Family

ID=32357978

Family Applications (1)

Application Number Title Priority Date Filing Date
GB189904489D Expired GB189904489A (en) 1899-03-01 1899-03-01 An Improved Adding Apparatus.

Country Status (1)

Country Link
GB (1) GB189904489A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE922552C (en) * 1950-11-23 1955-01-20 Kurt Goeddertz Adding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE922552C (en) * 1950-11-23 1955-01-20 Kurt Goeddertz Adding machine

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