PERPETUAL CALENDER

• US 3,579,882 A
• Filed: 03/24/1969
• Issued: 05/25/1971
• Est. Priority Date: 04/17/1968
• Status: Expired due to Term

• Current Assignee: Miyahune Yoshio
• Original Assignee: Miyahune Yoshio
• Inventors: MIYAHUNE YOSHIO
• Application Number:
  US04/809,893
• Time in Patent Office: 792 Days
• US Class Current: 40/107
• CPC Class Codes: G09D 3/02 with interchangeable members bearing the indicia

Abstract

A mechanical type of perpetual calendar utilizing laterally interlocking blocks having both faces of different color and which are arranged by being moved and turned upside down for the purpose of distinguishing in appearance the week days from flag days or red letter days. A frame holder is provided to slidably receive the blocks in rows, and has a side access frame member providing access for the blocks, and which frame member interlocks with the adjacent end blocks of the respective rows placed within the frame to hold same in a stabilized condition.

Claims

1. A perpetual calendar comprising in combination, a frame including a base plate and at least two opposed block-retaining frame members disposed at opposite lateral sides of the frame, said base plate having a plurality of parallel partitions disposed substantially at right angles to said frame members and formed at predetermined spaced intervals on its upper surface to form a plurality of guide paths arranged one above the other adaptable to receive calendar-forming block members therein;

a plurality of said calendar-forming blocks having opposed faces, and most of which blocks individually respectively bear individual weekday name and weekday numeral indicia characters represented in one color on one face and in a different color on the opposite or reverse face;

each of said blocks being of a size to slidably fit within said guide paths, and each being provided with a medially disposed tonguelike projection on one lateral side, and with a medial-disposed recess on the opposite lateral side of a size large enough and adaptable to receive the projection of an adjacently disposed block;

said blocks being laterally connected interchangeably in predetermined succession within said guide paths to form the week day names and numerical designations there beneath for a given month and year;

some of said blocks being substantially clear of any prominent indicia at least on one face thereof so as to serve as reserve or spacer blocks, said blocks being constructed so as to provide interchangeable and uniformly aligned attachment with any other given block irrespective of which face is up;

one of said lateral frame members being a separate member and means to pivotally mount it at one end on said frame, said pivotal frame member having a plurality of lateral projections spaced to medially align with said guide paths and the recesses of the blocks disposable therein, so that said frame member can be readily opened and closed so that its projections fit into the recesses of the respective blocks to thereby press the blocks into alignment within the guide paths and to support them in a stabilized condition on the surface of said frame base plate.

2. A perpetual calendar as defined in claim 1 wherein said frame side edge opposite the pivotal side edge is so constructed to receive the projections of the respective blocks as disposed adjacent thereto in the guide paths, to better provide a stabilized mounting of the plurality of blocks.