US243885A - wilhelm gttlzow - Google Patents
wilhelm gttlzow Download PDFInfo
- Publication number
- US243885A US243885A US243885DA US243885A US 243885 A US243885 A US 243885A US 243885D A US243885D A US 243885DA US 243885 A US243885 A US 243885A
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- US
- United States
- Prior art keywords
- watch
- head
- spring
- button
- axle
- 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 - Lifetime
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- 238000004804 winding Methods 0.000 description 16
- 239000002184 metal Substances 0.000 description 2
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/141—Mechanical overload release couplings
Definitions
- My invention is applicable both to watchkeys and to stem-winding or keyless watches, and the object is to prevent the spring from being broken in case the person winding the watch continues to turn the key after the spring is entirely'wound up.
- the invention consists in the combination, in a watch-key or watch with a key-head or winding-up button and abarrel or axle through which the turning of the head or button is transmitted to the watch-movement, of a screw connecting said head or button with said barrel or axle, and a spring which is compressed by said screw, and serves to lock the head or button to the barrel or axle by friction.
- the tension of this friction-spring is sufficiently strong to overcome the ordinary resistanceincurred in winding a watch; but when the mainspring is fully wound up the increased resistance is sufficient to overcome the friction of the aforesaid spring and causes the head or button to turn free of and without imparting any motion to the barrel or axle.
- Figure 1 represents a side view
- Fig. 2 a longitudinal section
- Fig. 3 an edge view, of a watch-key embodying my invention
- Fig. 4. represents a sectional view of the stem of a watch embodying my winding mechanism.
- A represents the barrel of a watch-key
- B designates the head thereof, here shown as ringshaped and made of a separate piece from the barrel.
- design ates a screw, which is inserted loosely through the head B, and is screwed into the upper end of the barrel A; and a designates a small set-screw inserted in the barrel, and adapted to be set up to hold the screw (3 rigidly 50 in place after being adjusted.
- D designates the stem of a watch
- E designates the axle through which the winding is transmitted to the movement.
- This axle is rigidly fixed in a plug or core which fits within the stem,and may be properly considered as a part of the axle.
- the button F designates the ordinary winding-up button
- O designates a screw like that previously described, whereby the button F is secured upon the end of the axle E.
- the spring I) is arranged 8o between the button F and the end of the axle E, and by turning up the screw 0' the spring is deflected and serves by its friction to lock the button F to the axle.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Description
(No Model.) I! W. GULZOW.
WATUH WINDING MECHANISM- Patented July 5, 1881.
Egg,
6 a 5 m W UNITED STATES PATENT OFFICE.
VVILHELM GULZOW, OF HAMBURG, GERMANY.
WATCH-WINDING MECHANISM.
SPECIFICATION forming part of Letters Patent No. 243,885, dated July 5, 1881.
Application filed May 23, 1881. (No model.) Patented in England December 29, 1879, in Germany January 1, 1880, in Belgium January 10, 1880, in France January 12, 1880, and in Austria June 14, 1880.
To all whom it may concern:
Be it known that I, W ILHELM GiiLzoW, of Hamburg, in the Empire of Germany, have invented certain new and useful Improvements 5 in Watch-Winding Mechanism, of which the following is a specification, and for which were granted British Letters Patent No. 5,307, dated December 29, 1879.v
My invention is applicable both to watchkeys and to stem-winding or keyless watches, and the object is to prevent the spring from being broken in case the person winding the watch continues to turn the key after the spring is entirely'wound up.
The invention consists in the combination, in a watch-key or watch with a key-head or winding-up button and abarrel or axle through which the turning of the head or button is transmitted to the watch-movement, of a screw connecting said head or button with said barrel or axle, and a spring which is compressed by said screw, and serves to lock the head or button to the barrel or axle by friction. The tension of this friction-spring is sufficiently strong to overcome the ordinary resistanceincurred in winding a watch; but when the mainspring is fully wound up the increased resistance is sufficient to overcome the friction of the aforesaid spring and causes the head or button to turn free of and without imparting any motion to the barrel or axle.
In the accompanying drawings, Figure 1 represents a side view, Fig. 2 a longitudinal section, and Fig. 3 an edge view, of a watch-key embodying my invention; and Fig. 4. represents a sectional view of the stem of a watch embodying my winding mechanism.
Similar letters of reference designate correspondin g parts in all the figures.
Referring first to Figs. 1, 2, and 3, A represents the barrel of a watch-key, and B designates the head thereof, here shown as ringshaped and made of a separate piece from the barrel.
design ates a screw, which is inserted loosely through the head B, and is screwed into the upper end of the barrel A; and a designates a small set-screw inserted in the barrel, and adapted to be set up to hold the screw (3 rigidly 50 in place after being adjusted.
Between the head of the screw 0 and the portion of the head below said screw-head is placed a flat spring, I), and the metal of the head B, immediately below the screw-head, is cutaway, so that by screwing down the screw 0 the spring I) is deflected downward and a tension applied thereto sufiicient to cause the barrel A and head B to turn together when the head Bis grasped in the fingers. So long as the mainspring ofa watch is being wound with this key the resistance offered by the mainspring is not sufficient to overcome the friction of the spring I); but as soon as the mainspring is fully wound up the resistance is so much increased that the friction of the spring I) is overcome, and the head B will turn without turning the barrel, and consequently without danger of breaking the mainspring by hard winding.
Referring now to Fig. 4, D designates the stem of a watch, and E designates the axle through which the winding is transmitted to the movement. This axle is rigidly fixed in a plug or core which fits within the stem,and may be properly considered as a part of the axle.
F designates the ordinary winding-up button, and O designates a screw like that previously described, whereby the button F is secured upon the end of the axle E. In this example ofthe invention the spring I) is arranged 8o between the button F and the end of the axle E, and by turning up the screw 0' the spring is deflected and serves by its friction to lock the button F to the axle. As soon, however,
as the mainspring of the watch is fully wound up the resistance is sufficient to overcome the friction exerted by the spring I), and the button F will turn without imparting any mot-ion to the axle By my invention I prevent any possibility 0 of breaking the mainspring by carelessly turning upon a watch-key or the winding-up button of a stem-windin g watch after the spring is fully wound up.
What I claim as my invention, and desire to 5 secure by Letters Patent, is
1. The combination, in a Watch-key or watch with a key-head or winding-up button and a barrel or axle through which the turning of the head or button is transmitted to the watch- I00 barrel A, the screw C, and the spring I), all substantially as and for the purpose specified.
WILHELM GULZOW.
Witnesses A. SGHAPER, V. REINOKE.
Publications (1)
Publication Number | Publication Date |
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US243885A true US243885A (en) | 1881-07-05 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US243885D Expired - Lifetime US243885A (en) | wilhelm gttlzow |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6216570B1 (en) * | 1999-01-05 | 2001-04-17 | L. Vad Technology, Inc. | Driver for captively holding a fastener during assembly and disassembly of two parts |
US20080318604A1 (en) * | 2000-02-25 | 2008-12-25 | Mark Titus | Prepaid short messaging |
-
0
- US US243885D patent/US243885A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6216570B1 (en) * | 1999-01-05 | 2001-04-17 | L. Vad Technology, Inc. | Driver for captively holding a fastener during assembly and disassembly of two parts |
US20080318604A1 (en) * | 2000-02-25 | 2008-12-25 | Mark Titus | Prepaid short messaging |
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