US902112A - Dust-proof watchcase-pendant. - Google Patents
Dust-proof watchcase-pendant. Download PDFInfo
- Publication number
- US902112A US902112A US40513807A US1907405138A US902112A US 902112 A US902112 A US 902112A US 40513807 A US40513807 A US 40513807A US 1907405138 A US1907405138 A US 1907405138A US 902112 A US902112 A US 902112A
- Authority
- US
- United States
- Prior art keywords
- pendant
- dust
- socket
- thread
- smooth
- 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
Links
- 239000000428 dust Substances 0.000 description 5
- BFPSDSIWYFKGBC-UHFFFAOYSA-N chlorotrianisene Chemical compound C1=CC(OC)=CC=C1C(Cl)=C(C=1C=CC(OC)=CC=1)C1=CC=C(OC)C=C1 BFPSDSIWYFKGBC-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B37/00—Cases
- G04B37/08—Hermetic sealing of openings, joints, passages or slits
- G04B37/10—Hermetic sealing of openings, joints, passages or slits of winding stems
Definitions
- MICHAEL ROSENHAFT OF HAMBURG, GERMANY.
- the part -aof the pendant is formed with a groove or socket tapering con ically in its lower part, the inner wall cof which is smooth at the lower portion and provided with a thread at the upper portion.
- 'Ihe guide piece or crown hub f, attached to the crown d, and the other parts, for instance the stem e connected therewith, is also recessed to form a tubular sleeve which enters socket b.
- This sleeve has on its inner face g l counter threads corresponding to the threads of the pendant.
- the upper art of the recess is smooth.
- a ldownwar ly tapering recessed tubular projection h of the guide part also engages in a corresponding recess in the pendant.
- Now dust, in order to reach the Works, must penetrate the space between a and f, and that between f and c and finally that between a and 7L.
- the object of providing the smooth part is to allow of' the mutual mobility of the parts Without executing a spiral movement. In watches in which the throwing into and out oit' action of the hands mechanism for the purpose of displacing the hands is operated from the crown, the smooth parts are made longer.
- I claim- 1 'A watch pendant having a socket provided with an upper thread and a lower smooth face, combined with a crown hub entering said socket and having an upper smooth face and a lower thread, the thread on one of said parts being opposed by the smooth face of the other part, substantially as speciiied.
- a watch pendant having an inner recess and an outer socket, said socket being provided with an upper thread and a lower smooth face, combined with a crown hub having a tubular projection entering said recess, and a sleeve entering said socket, the sleeve having an upper smooth tace and a lower thread, the thread on the sleeve being opposed by the smooth face of the socket, while the smooth face of the sleeve is opposed by the thread of the socket, substantially as specii'ied.
Description
M. ROSENHAFT. DUST Pnoor wAToHoAsE PENDANT.
APPLICATION FILED DBO. 5, 1,907.
mmm-,ed 0011.211908,
mi uonnu'rnsls col. 'wnnmowm n. n
MICHAEL ROSENHAFT, OF HAMBURG, GERMANY.
DUST-PROOF WATCI-ICASE-PENDANT.
Specification of Letters Patent.
Patented Oct. 27, 1908.
Application filed December 5, 1.*907. Serial N o. 405,138.
To all 'whom 'it may concern:
Be it known that I, MICHAEL RosENHAFT, a citizen of Germany, residing at Hamburg, Germany, have invented new and useful Improvements in Dust-Proof Watchcase-Pendants, of which the following is a specification.
The known pendants of stem-winding or keyless watches have the drawback, that they do not sufiiciently protect the works against the entrance of dust. The parts connected with the crown, for instance the stem, are simply inserted in the mechanism through the pendant. As however these parts must be revoluble they cannot fit tightly against the walls of the pendant, whereby interstices are formed through which dust can directly enter.
By the arrangement which forms the object of this invention the drawbacks are removed by the guide piece connected with the crown engaging in a grooved recess in the pendant, and these two parts forming a mutually interconnected neck by means oi threads or grooves which are formed on some of the adjacent faces. By this arrangement the penetration of dust into the mechanism through the pendant part is entirely avoided, as the dust remains lying in the channel and also even if it should take the opposite course, is prevented by the screw thread from penetrating further.
rihe accompanying drawing represents a longitudinal section of a watch pendant embodying my invention.
The part -aof the pendant is formed with a groove or socket tapering con ically in its lower part, the inner wall cof which is smooth at the lower portion and provided with a thread at the upper portion. 'Ihe guide piece or crown hub f, attached to the crown d, and the other parts, for instance the stem e connected therewith, is also recessed to form a tubular sleeve which enters socket b.
This sleeve has on its inner face g l counter threads corresponding to the threads of the pendant. The upper art of the recess is smooth. A ldownwar ly tapering recessed tubular projection h of the guide part also engages in a corresponding recess in the pendant. Now dust, in order to reach the Works, must penetrate the space between a and f, and that between f and c and finally that between a and 7L. The object of providing the smooth part is to allow of' the mutual mobility of the parts Without executing a spiral movement. In watches in which the throwing into and out oit' action of the hands mechanism for the purpose of displacing the hands is operated from the crown, the smooth parts are made longer.
I claim- 1. 'A watch pendant having a socket provided with an upper thread and a lower smooth face, combined with a crown hub entering said socket and having an upper smooth face and a lower thread, the thread on one of said parts being opposed by the smooth face of the other part, substantially as speciiied.
2. A watch pendant having an inner recess and an outer socket, said socket being provided with an upper thread and a lower smooth face, combined with a crown hub having a tubular projection entering said recess, and a sleeve entering said socket, the sleeve having an upper smooth tace and a lower thread, the thread on the sleeve being opposed by the smooth face of the socket, while the smooth face of the sleeve is opposed by the thread of the socket, substantially as specii'ied.
Signed by me at Hamburg, Germany this 22nd day of November 1907.
MICHAEL ROSENHAFT.
Witnesses:
HAMILTON RnsnK, ERNEST H. L. MUMMENHOFF
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40513807A US902112A (en) | 1907-12-05 | 1907-12-05 | Dust-proof watchcase-pendant. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40513807A US902112A (en) | 1907-12-05 | 1907-12-05 | Dust-proof watchcase-pendant. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US902112A true US902112A (en) | 1908-10-27 |
Family
ID=2970536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US40513807A Expired - Lifetime US902112A (en) | 1907-12-05 | 1907-12-05 | Dust-proof watchcase-pendant. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US902112A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6254135B1 (en) | 2000-05-23 | 2001-07-03 | Girard Design Llc | Album construction for holding and displaying greeting cards |
-
1907
- 1907-12-05 US US40513807A patent/US902112A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6254135B1 (en) | 2000-05-23 | 2001-07-03 | Girard Design Llc | Album construction for holding and displaying greeting cards |
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