US922809A - Watch. - Google Patents

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Publication number
US922809A
US922809A US36773507A US1907367735A US922809A US 922809 A US922809 A US 922809A US 36773507 A US36773507 A US 36773507A US 1907367735 A US1907367735 A US 1907367735A US 922809 A US922809 A US 922809A
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US
United States
Prior art keywords
cover
drum
wheel
watch
arbor
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
Application number
US36773507A
Inventor
Alfred Pfister
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Longines Francillon & Cie Fab Des
Original Assignee
Longines Francillon & Cie Fab Des
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Longines Francillon & Cie Fab Des filed Critical Longines Francillon & Cie Fab Des
Priority to US36773507A priority Critical patent/US922809A/en
Application granted granted Critical
Publication of US922809A publication Critical patent/US922809A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/16—Barrels; Arbors; Barrel axles

Definitions

  • My invention relates to improvements in watches and particularly to the spring motor mechanism of a watch.
  • the object of the invention is to provide a simple and eHicient construction of the barrel whereby all lateral strain on the arbor will be avoided and at the same time overwinding is prevented.
  • I) is the drum of a barrel fixed to the arbor a to which is secured a hub c provided with a hook c to which the inner end of the main spring is attached.
  • a spur wheel d which meshes with a winding wheel f.
  • the lid or cover e which is rotatable within the drum of the barrel and is provided on its inner wall with a hook g to which the outer end of the spring is attached.
  • the cover e and the spur wheel d are secured together by a clamping nut or collar d2 mounted on the large central threaded hub of the spur wheel and bearing against the cover.
  • the hub of the spur wheel is journaled upon a. dowel 7L of suitable material, such as cast steel, which is iiXed in a recess in the upper plate t2, as clearly shown. This construction prevents the transmission from the spur wheel to the Specification o Letters Patent.
  • the 'winding wheel f is of the usual construction arranged to be rotated to wind the watch but prevented from turning backward by the usual pawl and ratchet wheel.
  • the drum b has around its periphery the usual great wheel, as indicated at b, whereby it may drive the train.
  • the spurwheel d and the cover or lid c of the barrel are held stationary by the pawl and ratchet wheel hereinbefore mentioned, while the drum l) turns under the action oi' the spring and drives the train, the arbor rotating with the drum.
  • a watch the combination with a drum and a cover, said drum and cover being relatively movable, of an arbor on which the drum is mounted, a spring within the cover and drum, said spring having one end connected to the cover and the other to the arbor, a spur-wheel provided with an enlarged central hub proj ecting inside the cover, a clamping nut on said hub inside the cover, and a dowel surrounding the arbor and extending into the central hub oi the spur-wheel.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Description

A. PPISTBR.
WATCH. APPLICATION'PILED 211.12, 1907.
Patented May 25, 1909.
THE No'Rms FUER: ro., wAsNmcToN. 1:.c.
ALFRED PFISTER, OF ST. IMIER, SWITZERLAND, ASSIGNOR TO FABRIQUE DES LONGINES FRANOILLON & OIE., OF ST. IMIER, SWITZERLAND.
WATCH.
To all whom it may concern:
Be it known that i, ALFRED Pris'rnn, citizen of Switzerland, residing at St, Imier, Canton de Berne, Switzerland, have invented certain new and useful improvements in W atches, and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to malre and use the same.
My invention relates to improvements in watches and particularly to the spring motor mechanism of a watch.
The object of the invention is to provide a simple and eHicient construction of the barrel whereby all lateral strain on the arbor will be avoided and at the same time overwinding is prevented.
My invention consists in the features, details of construction, and combination of parts which will first be described in connection with the accompanying drawings and then particularly pointed out in the claims.
In the drawings l have shown a sectional view of a spring motor mechanism embodyf ing my invention.
Referring to the drawings, I) is the drum of a barrel fixed to the arbor a to which is secured a hub c provided with a hook c to which the inner end of the main spring is attached. About the arbor a is loosely mounted a spur wheel d which meshes with a winding wheel f. To the spur wheel d/ is secured the lid or cover e which is rotatable within the drum of the barrel and is provided on its inner wall with a hook g to which the outer end of the spring is attached. rThe cover e and the spur wheel d are secured together by a clamping nut or collar d2 mounted on the large central threaded hub of the spur wheel and bearing against the cover. The hub of the spur wheel is journaled upon a. dowel 7L of suitable material, such as cast steel, which is iiXed in a recess in the upper plate t2, as clearly shown. This construction prevents the transmission from the spur wheel to the Specification o Letters Patent.
Application led April l2, 1907.
Patented May 25, 1909.
Serial No. 367,735.
l arbor of any lateral pressure or strain due to the action of the spring on the cover and the spur wheel.
The 'winding wheel f is of the usual construction arranged to be rotated to wind the watch but prevented from turning backward by the usual pawl and ratchet wheel.
The drum b has around its periphery the usual great wheel, as indicated at b, whereby it may drive the train.
During the ruiming of the watch, the spurwheel d and the cover or lid c of the barrel are held stationary by the pawl and ratchet wheel hereinbefore mentioned, while the drum l) turns under the action oi' the spring and drives the train, the arbor rotating with the drum.
Having thus fully described my invention, what l claim is l. in a watch, the combination with a drum and a cover, said drum and cover being relatively movable, of an arbor on which the drum is mounted, a spring connected to the cover and arranged to drive the drum, a spur-wheel connected to the cover and provided with a central opening, means for rotating the spur-wheel to wind the spring, and a dowel surrounding the arbor and projecting into the central opening of the spurewheel.
2. In a watch, the combination with a drum and a cover, said drum and cover being relatively movable, of an arbor on which the drum is mounted, a spring within the cover and drum, said spring having one end connected to the cover and the other to the arbor, a spur-wheel provided with an enlarged central hub proj ecting inside the cover, a clamping nut on said hub inside the cover, and a dowel surrounding the arbor and extending into the central hub oi the spur-wheel.
ln testimony whereof l hereunto affix my signature in the presence of two witnesses.
ALFRED PFTSTER. l.Witnesses FRIEDRICH Nassau, NATHANIEL LEUBA.
US36773507A 1907-04-12 1907-04-12 Watch. Expired - Lifetime US922809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US36773507A US922809A (en) 1907-04-12 1907-04-12 Watch.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US36773507A US922809A (en) 1907-04-12 1907-04-12 Watch.

Publications (1)

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US922809A true US922809A (en) 1909-05-25

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Family Applications (1)

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US36773507A Expired - Lifetime US922809A (en) 1907-04-12 1907-04-12 Watch.

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