Author: James R. Saltvold Publisher: iUniverse ISBN: 1532021364 Category : Reference Languages : en Pages : 248
Book Description
Perpetual calendars are a fascinating way to look at time, and can be defined in a variety of ways. In a comprehensive how-to manual, James Saltvold shares valuable insight on how to use his unique concepts to make practical perpetual calendars for everyday home and office use. These calendars, which save resources and look like a conventional calendar, can be set to display any month for any year within their range. They are set by simply moving a slider, and typically have a range of 50 to 100 years. Saltvold uses skills he acquired during an engineering career to present design ideas and concepts for calendars that are easy to produce and use. After providing a brief description of the four types or categories that his calendars fi t into, Saltvold leads readers on an informative journey, enhanced by figures and tables. He explains how to bring calendar prototypes into mass production, describes products that can be made from the four types of perpetual calendars, details which products might be attractive to various markets and manufacturers, and shares a brief history of his own work in developing concepts and researching patents. Additional sections include material on where to search for more information on perpetual calendars, as well as references with comments. Practical Perpetual Calendars includes designs for desk calendars, wall calendars, pocket calendars, photo holders, and other applications. The calendars shown on the front cover are described on the following pages: wall calendar (p. 129), clock (p. 77), pocket calendar (p. 68), full-year calendar (p. 157), 7-column desk calendar (p. 145), and 13-column desk calendar (p. 120).
Author: E. F. Hasty Publisher: Forgotten Books ISBN: 9780266579953 Category : Literary Collections Languages : en Pages : 34
Book Description
Excerpt from The Hasty Perpetual Calendar, for Practical Use Every Day: A Simple, Easy Method Which Will Enable Any One to Dispense With a Printed Calendar for All Time to Come; Also Furnishing a Mental Calendar for Every Year of the Christian Era; Valuable in Detecting or Correcting Errors in Days, Dates of Months and Years Sunday began the year 1882; therefore Sunday is the Key for that year. Monday began 1888, Tuesday 1884, and Thursday 1885, and those days are the Keys of the respective years; 1886 will begin on Friday, 1887 on Saturday, and 1888 on Sunday, and those will be the Keys for those years, in the order named. The principle of this calendar method is, substantially, to have the first date, in each month, of the Key, so perfectly in the memory that any other date Or day may be quickly found from it. In common years (a common year is any year that is not a Leap Year, ) the same set of figures represents the first dates of Keys in the different months for all years in all centuries. For example, Sunday is the Key for 1882, there fore the following figures will represent the first dates of Sunday in the months named for 1882, or any other common year of which Sunday is the Key. The first date of Sunday in January, is lst; February, 5th;6 perpetual mental calendar. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Edward K. Myers Publisher: Forgotten Books ISBN: 9781390943993 Category : Reference Languages : en Pages : 50
Book Description
Excerpt from Myers' Perpetual Calendar and Reference Book: A Compendium of Calendars, Conveniently Arranged for the the Eighteenth, Nineteenth and Twentieth Centuries and for All Future Time, and Rules, Tables, Statistics and General Information of the Greatest Practical Value; A Hand-Book for Everybody Patented United States Dec. 11. 1894; Germany June 20. 1895; Canada Dec. 5, 1895. This Chair is acknowledged by the leading physicians. Teachers. Piano, manufacturers. Music dealers and others. To be the latest. Best and most perfect practical piano chair manufactured. It is handsome and substantial, and is pronounced the most exquisite piano chair made. Eminent physicians now strongly recommend a support to the back while playing, as it is not the play ing, but sitting unsupported at the back, that fatigues the player. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: James R. Saltvold
Author: Henry Fitch
Author: Willard Eldridge Edwards
Author: E. F. Hasty
Author: Charles Alexander Montgomery
Author: Willard Eldridge Edwards
Author: Perpetual calendar
Author: Edward K. Myers
Author: Darrell Gibbs
Author: Willard Eldridge Edwards