p - i - n

Chronology of Important Events

  • Edward Howard and Aaron Dennison become acquainted.

  • Dennison considers making brass clock with interchangeable parts.
  • Dennison devises size gauging system for filing and making watch parts.
  • Dennison decides on the large full plate English lever watch as his model.
  • Dennison is inspired by the production methods at the U.S. Armory in
    Springfield, Mass. [
    why not at a clock factory?]
  • Thousands of brass clocks are being made in Bristol, Conn, with
    interchangeable parts.
  • Did Dennison know Pierre Ingold Re: British Watch & Clockmaking Co.

  • Dennison convinces Howard that making watches on the interchangeable system would be a better business opportunity than making locomotives. "They're just small clocks."
  • Howard arranges initial capital of $20,000 from Samuel Curtis;
    Mr. Curtis being equal partners with Dennison and Howard & Davis Co.

  • Dennison goes to England to learn watch making processes and to find sources of material.

  • Factory built on Hamden Street in Roxbury, Mass.
  • Company name of American Horologe Co. changed to Warren Manufacturing Co. to hide intent of company from English suppliers.
  • Dennison builds first model 8-day watch, which it and tools were failures.
  • N.P. Stratton salvages plans and material by building 30-hour model.


  • Dennison pursues idea to build 8-day watch which the Marsh brothers successfully modeled.
  • Dennison is convinced to abandon the 8-day in favor of the 30-hour because of manufacturing problems and costs for their intended market.
  • Possibly 17 Howard, Davis & Dennison 8-day watches were made.

Early 1853
  • The Warren watch was produced (18 - 100).
  • In tribute to famous General Joseph Warren.
  • English style, slow train, going barrel, solid balance, 30 hour.

Late 1853
  • The Samuel Curtis watch was produced (101 - 1000).
  • In honor of their first investor.
  • Hired Rhode Island silversmith to make cases.
  • Changed company name to Boston Watch Co.

  • The Dennison, Howard & Davis watch was produced (1001 - 5000).
  • Possibly as many as 500 at Roxbury.
  • A number of design improvements were made from the Samuel Curtis.
  • Built factory at Waltham in land deal with Waltham Improvement Co.
    (Nov 1, 1853, James Brown bought Bemis farm on Charles River that Dennison wanted)

  • Producing 30 watches/week with 90 employees which was not yet competitive. Howard says in 1883 letter, "It was certain that we were losing money on every movement made."
  • No mention by either Dennison or Howard of lack of sales or stockpiling of movements, nor of layoffs of employees.
  • Keith's explanation was that the company was under capitalized.

April 9, 1857 Bankruptcy Auction
  • Royal Robbins --> TB&Co., AT&Co., Am. Watch Co., WWCo.
  • E. Howard and Charles Rice --> H&R, E. Howard & Co.
  • 4,000 DH&D movements were produced & sold -- but by whom?
  • Why do AT&Co M57s start at 5001 and Howard & Rice start at 6001?

The right to download and store or output this page is granted to users for their personal use only. Any other reproduction, by any means - mechanical or electronic - without the express written permission of Ronald J. Price is strictly prohibited.

Copyright © 1997-1999 Price-Less Ads TM.All rights reserved.

Send comments on this web site to Ron Price: rprice@pricelessads.com