GB186132A - Improvements in and relating to alarum clocks - Google Patents
Improvements in and relating to alarum clocksInfo
- Publication number
- GB186132A GB186132A GB1672121A GB1672121A GB186132A GB 186132 A GB186132 A GB 186132A GB 1672121 A GB1672121 A GB 1672121A GB 1672121 A GB1672121 A GB 1672121A GB 186132 A GB186132 A GB 186132A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alarm
- clock
- hand
- minute
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
- G04F3/02—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms
- G04F3/022—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms using mechanical signalling device
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
186,132. Lowen, C. G., and Lingwood, C. P. June 17, 1921. Dials. - Relates to an alarm clock in which the going mechanism and the main portions of the alarm mechanism are of the usual construction for a drum type clock and in which the dial is graduated in minutes for a time space of one hour. Motion-work.-The motionwork is either altered, in that the motion wheel and hour hand are dispensed with, Figs. 1, 2; or is entirely dispensed with, Fig. 5. Alarm mechanism. -The hour-wheel c, Figs. 1 and 2, engages a pinion a<7> which engages the alarm cam-wheel b<5>; thus the escape cam b<4> and the wheel b<5> of the alarm train are rotated once an hour. In the arrangement shown in Fig. 5, the alarm cam b<4> is carried by the spring release catch g of the alarm mechanism and the minute-arbor a, which carries the set alarm nut, extends through the alarm cam b<4>. The trip pin g<1> is carried by the minute-arbor a<x>; and the cam b<4>, pin g<1> and the minute-hand are arranged so that the pin g<1> trips the catch g on the minute-hand reaching zero. Stop mechanism.-The stop mechanism comprises a bar f, Fig. 1, mounted to slide inside the case f, fitted with an operating-knob f<2> and provided with a springy blade f<4>. To stop the clock the knob is moved to draw the blade f<4> into contact with the balance-wheel a<6>. To restart the clock the knob is moved downwards and the blade f<4>, before breaking contact with the balancewheel gives it a push to start it rotating. Short-time movements.-To set the clock for giving an alarm after a predetermined interval, the minute-hand is moved to zero and the alarmsetting hand is moved to the desired position; on restarting the clock it runs for the required period and then gives an alarm. In the modification shown in Fig. 5, the minute-hand is set from zero, reading counter-clockwise to the period after which an alarm is required. The clock is then restarted and the hand travels to zero, whereupon the alarm is given.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1672121A GB186132A (en) | 1921-06-17 | 1921-06-17 | Improvements in and relating to alarum clocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1672121A GB186132A (en) | 1921-06-17 | 1921-06-17 | Improvements in and relating to alarum clocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB186132A true GB186132A (en) | 1922-09-18 |
Family
ID=10082440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1672121A Expired GB186132A (en) | 1921-06-17 | 1921-06-17 | Improvements in and relating to alarum clocks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB186132A (en) |
-
1921
- 1921-06-17 GB GB1672121A patent/GB186132A/en not_active Expired
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