US1279617A - Watch-crystal. - Google Patents

Watch-crystal. Download PDF

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Publication number
US1279617A
US1279617A US6667615A US6667615A US1279617A US 1279617 A US1279617 A US 1279617A US 6667615 A US6667615 A US 6667615A US 6667615 A US6667615 A US 6667615A US 1279617 A US1279617 A US 1279617A
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US
United States
Prior art keywords
crystal
watch
edge
groove
new
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Expired - Lifetime
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US6667615A
Inventor
Louis E F Wachter
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Individual
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Individual
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Priority to US6667615A priority Critical patent/US1279617A/en
Priority to US217474A priority patent/US1288307A/en
Application granted granted Critical
Publication of US1279617A publication Critical patent/US1279617A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G04B39/004—Watch crystals; Fastening or sealing of crystals; Clock glasses from a material other than glass

Definitions

  • PatentedSept.- 24, 1918 ./7 U mllmm E -0 Inventor: 3 EFfiQCfl/qn ⁇ q A tty,
  • This invention relates to Watches and particularly to the crystal or transparent face covering.
  • the objects are to pr0- quiz a crystal, using the term generally, that will form a tight joint with and in the casing of a Watch and a secure connection; also to overcome the variations in manufacture and use of crystals and in their fitting. While I use the term crystal, it may include any material suitable for a transparent face cover or" a watch or like article.
  • A is the outer face of the crystal B is a groove
  • G is a sloping or beveled portion between the groove and the main face A
  • D is a beveled or sloping surface between the groove and the other surface of the crystal and forms a radially extending portion of the edge.
  • the extending edge D serves more readily to facilitate the insertion and also to guard against their falling out in the case of shrinkage.
  • the projection C on the other side of the groove prevents the crystal from falling inward.
  • a Watch-crystal having a circumferential retaining-groove formed in the center of its edge.
  • a Watch-crystal having a circumferential groove formed in the center of its edge.

Description

Attest:
New
L. E. F. WACHTER. WATCH CRYSTAL. APPLICATION FILED DEC. :4. I915.
PatentedSept.- 24, 1918 ./7 U mllmm E -0 Inventor: 3 EFfiQCfl/qn {q A tty,
scnu m "siren srrarns PATENT OFFICE,
some n r. wacnrnn, or NEW Yon-K, n. Y.-
WATCH-CRYSTAL.
Specification of .Letters ratent. Patented Sept. 24;, 1918 Applicaticu filed December 14, 1915. Serial No. 66,676.
This invention relates to Watches and particularly to the crystal or transparent face covering. Among the objects are to pr0- duce a crystal, using the term generally, that will form a tight joint with and in the casing of a Watch and a secure connection; also to overcome the variations in manufacture and use of crystals and in their fitting. While I use the term crystal, it may include any material suitable for a transparent face cover or" a watch or like article.
In the accompanying drawing I have shown one form of embodiment of my invention, in which A is the outer face of the crystal B is a groove, G is a sloping or beveled portion between the groove and the main face A, D is a beveled or sloping surface between the groove and the other surface of the crystal and forms a radially extending portion of the edge. When used in the form With this extendin ortion the same can serve a snap-retaining edge-0r a guard, or other purposes, and would accommodate any slight irregularity of size either of the casing or of the crystal.
As such crystals are inserted in their position for use in the direction of their convexity, they are pressed and slightly bent to be snapped into position and in the case of material other than glass, as when the crystal is made of celluloid or like material which is more flexible and also subject to variations, the extending edge D serves more readily to facilitate the insertion and also to guard against their falling out in the case of shrinkage. The projection C on the other side of the groove prevents the crystal from falling inward.
My invention may be embodied in various,
forms from What I have herein specifically shown and described,likewise the crystal may be made of various material and vary-. ing dimensions, size and form, but What 1 claim and desire to secure by Letters Patent 1s 1. A Watch-crystal having a circumferential retaining-groove formed in the center of its edge.
2. A Watch-crystal having a circumferential groove formed in the center of its edge.
Signed at New York, this 10th day of De ccmber, 191.5.
LOUIS E. F. WACHTER.
\Vitnesses:
HERMANN F. CUN'rz, H. MUGHMORE.
US6667615A 1915-12-14 1915-12-14 Watch-crystal. Expired - Lifetime US1279617A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US6667615A US1279617A (en) 1915-12-14 1915-12-14 Watch-crystal.
US217474A US1288307A (en) 1915-12-14 1918-02-16 Watch crystal and bezel.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6667615A US1279617A (en) 1915-12-14 1915-12-14 Watch-crystal.

Publications (1)

Publication Number Publication Date
US1279617A true US1279617A (en) 1918-09-24

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US6667615A Expired - Lifetime US1279617A (en) 1915-12-14 1915-12-14 Watch-crystal.

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US (1) US1279617A (en)

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