Selector system for a type-bearing element of an office machine
AssigneeIng. C. Olivetti & C., S.p.A.
InventorRinaldo Salto
Life of this patent
Estimating the term…
Abstract
A selector system for a type-bearing element of a typewriter, accounting machine or other office machines, wherein a positioning member for the type-bearing element is positioned positively by a series of cam followers movable by a corresponding series of cyclically actuated cams and controlled by selectively settable stop elements. The type-bearing element comprise a shell on which the types are distributed in rows and columns. The shell is rotatable on a support sleeve provided with two side walls external to the shell. The types are distributed in two groups selectable by a transport mechanism connected to the type-bearing element through differential gears controlled by a bistable spring and two stop elements.
Claims23
A selector system for a type-bearing element of typewriters, teleprinters, accounting machines and the like office machines comprising an output member connected to the type-bearing element and shiftable for the positioning thereof;
- a series of cams actuatable between a rest and an operative position;
- a series of cam follower members associated with said actuatable cams, each cam follower member of said series including a cam follower element cooperative with an associated cam of said series of cams, an output element operatively connected to said output member, and a pivotable element, said cam follower element being positively movable by the associated cam upon actuation thereof in said operative position;
- support means for freely supporting said cam follower members such that when said cam follower element is moved by the associated cam, the corresponding output element is inoperative over said output member;
- and selectively actuatable arrest means for arresting the pivotable element of one cam follower of said cam follower members for causing the output element of said one cam follower to positively shift the output member upon positive movement of the cam follower element of said one cam follower by the associated cam actuated in said operative position.
In a selector system for typewriter machines, teleprinters, accounting machines and the like office machines comprising a type-bearing element including two zones in which are distributed two corresponding groups of types;
- differential gear means including an output member connected to the type-bearing element for selecting said types and two input members;
- a transport mechanism connected to a first member of said input members for selecting one of said two zones;
- and a selector mechanism connected to a second member of said input members for selecting a type in said one of said two zones, the combination comprising:
- a driven member operative over the first member of said differential gear means;
- a bistable spring acting over said driven member, said spring having two operative configurations and an inoperative configurations of equilibrium between said two operative configurations;
- a pair of stop elements cooperative with said driven member, said bistable spring, in each of said two operative configurations causing the driven member to be arrest by one or the other of said stop elements in two stable positions, in each of which there is selected one or another of said two zones;
- a driving member actuatable between two different locations;
- and
- lost motion connecting means for connecting said driving member with said driven member, said driving member, when actuated from one to another of said locations, causing the driven element to be shifted from one of said stable positions to one intermediate position, against the action of said spring, beyond the inoperative configuration thereof and said lost motion connecting means enabling said bistable spring to further shift said driven member from the intermediate position to the other of said stable positions.
A selector system for typewriter machines or the like machines comprising a frame;
- a cylindrical platen;
- a type-bearing element comprising a shell including a substantially spherical outer surface and an inner surface of rotations, said outer surface carrying a series of types distributed in rows and columns selectable in front of said platen;
- a support member including a sleeve rotatably supporting the inner surface of said shell and at least two side walls fixedly connected to said sleeve and extending outside the shell;
- first selection means rotating said shell with respect to the sleeve of said support member for selecting the columns of types;
- a base member embracing said two side walls;
- first pivot means pivotally supporting said side walls on said base member parallel to the platen and perpendicularly to said sleeve;
- second selection means tilting the side walls of said support member with respect to said base member for selecting the rows of types;
- second pivot means pivotally supporting said base member on the frame along an axis parallel to the platen;
- and striking means pivoting the base member with respect to the frame for striking the selected type against said platen.
A selector system for typewriters, teleprinters, accounting machines and the like office machines comprising a frame;
- a platen mounted on the frame;
- a type-bearing element including a plurality of types;
- a selection member pivoted on the frame and connected to said element for selecting one of said types in front of said platen;
- an output member positively positionable from a rest position to different selection positions;
- means connecting said output member with said selection member, for the selection of said types starting from the rest position of said output member, said means including a lost motion connection;
- spring means operative over said selection member for returning said selection member in said rest position, through said lost motion connection, upon returning at rest of said output member;
- and a pair of levers connecting in a toggle fashion said selection member with the frame, said levers being substantially aligned in the rest position of said selection member to dampen positively any rebound of said lost motion connection upon returning of said selection member in said rest position.
A type-bearing element carrying a series of types distributed over a surface substantially spherical in shape in columns for a selector system of a typewriting machine of the type comprising a cylindrical platen;
- a support member for rotatably supporting said type-bearing element;
- first selection means rotating said type-bearing element with respect to said support member for selecting in front of said platen the columns of types;
- a base member including pivot means for pivotally supporting said support member parallel to the platen;
- second selection means tilting said support member with respect to said base member for selecting in front of said platen the rows of types;
- and striking means operating over the base member for striking the selected type against said platen;
- said type-bearing element comprising a shell including cylindrical inner portions slidably guided by said support member and a plurality of external radial ribs projecting from said shell and having a section substantially circular so as to define the spherical surface of said type-bearing element, and each of said ribs supporting projecting therefrom the types of one of said corresponding columns.
Dependencies are inferred from the claim text.