Yale Lock Manufacturing Co., Stamford,
Connecticut - 2 movements
Yale Model No: 1 c.1880. Double Pin-Dial Time lock (1).
This was Yale's first time lock, and is probably one of the finest, complex and more
beautiful ever made. Available with either 56 hour or, after 1885, 72 hour movements. An
extremely expensive item as the standard version was $400. A day of the week attachment,
Sunday Attachment (2), was available for an extra
$50. This lock is prior to the advent of the 'modular design' where individual movements
were interchangeable. The movements were made by E. Howard & Co., Boston, one of the
finest watchmakers of the period. Howard continued to supply Yale as well as other
companies (Consolidated, Diebold) with movements for many years. Although a complex and
expensive lock, it was popular and Yale made over 2100, therefore this lock for it's age
is fairly common with over 400 known survivors of which 50 have the Sunday Attachment
option. Movement #1227, case #1321. file 100
A feature unique to this type of time lock (pin dial) is that as
well as being ' off guard ' it can go ' on guard ' in accordance with the settings of the
pins. As such it is designed to run continuously, unlike the majority of time locks which
go off guard when they run down. However, if the movements are allowed to stop completely
they will take the lock off guard, despite the settings of the pins. Compare this model to
the Yale single pin dial (a much rarer version).
Below is a Diebold safe equipped with a Yale double pin dial.
The medallions are on
Yale’s Double dial bank lock with the two sides of the Paris exposition medal of
1876 where it won silver. The portrait is of Napoleon III.
This is an example of cross branding
in the time lock industry. Diebold had not yet at this time entered into the time lock business so
the Yale was added as an 'after market' product. What's even more
interesting as that this safe used Yale equipment for the combination locks
as Diebold certainly could have equipped the safe with their own locks.
(1) The pin dial is clearly a far more
complicated design than Sargent & Greenleaf's Model 2,
offered a number of innovations, the most obvious being the two front dials, each with
series of twenty-four pins. Every pin, embossed with an hour of the day, could be pushed
in, locking it, making the Pin Dial the first time lock capable of both unlocking and
locking a safe at a predetermined time. Further the Pin Dial was the only mechanical time
lock ever to be able to lock, unlock, and re-lock a safe for various one-hour periods
throughout the day. American Genius Nineteenth Century Bank Locks and Time Locks,
David Erroll & John Erroll, pp 164.
(2) In 1876 Yale added the Sunday Attachment, which allowed
the lock to skip the opening periods each Sunday. The mechanism is identified by two
curved nickel runners next to the inner top third of the pin dials embossed with
"Thursday Friday Saturday" and a small shield on each dial that is geared to
rotate at one-seventh the rate of the dial. These shields move over the the names of the
days, allowing the user to check to make sure it is accurate, and then, during the twelve
hours Sunday day, will be interposed between the drop wheel and the pins, guarding the
opening of the pulled pins and keeping the lock shut. This option was available after
1885. American Genius Nineteenth Century Bank Locks and Time Locks, David Erroll
& John Erroll, pp 164.