US1100840A - Timepiece. - Google Patents

Description

0. H. MILLER.

TIMEPIBGE. APPLICATION FILED SEPT. 2s, 1912.

Patented June 23, 1914.

'Zjff Inventor Witnesses I I Attorneys CHARLES H. MILLER, 0F SELMA, ALABAMA.

TIIVIEPIECE.

Specification of Letters Patent.

Patented June 23, 1914.

Application filed September 23, 1912. Serial No. 721,932.

To all whom 'it may concern Be it known that I, CHARLES H. MILLER, a citizen of the United States, residing at Selma, in the county o-f Dallas and State of Alabama, have invented a new and useful Timepiece, of which the following is a specification.

This invention relates to timepieces and more particularly to the escapement mechanism.

A large percentage of the repairs found necessary in timepieces is due to the loss or breakage of the rolling pin or to the breakage of the balance staff. In repairing a watch with a broken balance staif it is first necessary to remove the hair spring, then to remove the rolling table without breaking the rolling pin jewel and nally to remove the balance wheel. Obviously this requires considerable care in order to prevent the parts from becoming bent or broken. All of this work has to be done over again when the parts are reassembled. As a result of the amount of care and work necessary in order to replace a broken balance staff, it has been difficult to always have the timepiece properly repaired.

In order to overcome the disadvantages incident to the ordinary construction above described, the present invention has been devised.

It is the object of this invention to eliminate the anchor pin, the rolling pin jewel, and the rolling table.

Another object is to provide a balance staff which can be easily placed in or re moved from position without necessitating the skill heretofore found necessary.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment oi the invention herein disclosed, can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings, the preferred form of the invention has been shown.

In said drawings: Figure 1 is a plan view of a portion of the mechanism having the present improvements combined therewith. Fig. 2 is a section on line A-B Fig. l. Fig.

3 is an elevation of the balance staff. Fig. 4 is an end view of the staff and showing it assembled with a balance support.

Referring to the figures by characters of reference l designates the balance staff having a removable shoulder 2 on which the balance wheel 3 is fitted, this wheel being provided with the usual peripheral screws 4 whereby the poise of the wheel can be adjusted readily. One end of the hair spring 5 is secured to the bracket 6 carrying the jewel 7 constituting one of the bearings for the balance staff from shoulder 2. The other end of the hair spring is provided with the usual sleeve 8 which is fitted on the shoulder 2. A radially disposed feather 9 is formed on that portion of the staff between the shoulder 2 and 'that end of the staff remote from the bearing jewel 7 and which might be called the roller-table and this feather projects into the fork 10 of the pallet ll, said fork being provided with the usual stop pin 12 whereby its movement is limited.

It will be seen that by providing a balance staff having a radially disposed feather which directly engages the pallet fork, there is nothing to become bent or broken while the staffn is being placed in or removed from position, and furthermore the structure is greatly simplified and consequently rendered more durable than heretofore. Repairs can be quickly made simply by removing the center staff and replacing it with a new one. It has been found that this can be done in less than ve minutes and that there is no strain upon the eyes and nerves such as often occurs during the operation of repairing corresponding parts of structures such as heretofore devised.

IVhat is claimed is z- In a timepiece, a combined tubular staff, and roller table having an annular shoulder constituting an abutment for a balance wheel,` and a relatively thin, radially disposed, longitudinally extending feather integral with the roller table, said feather being flat and angular and of uniform thickness.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

CHARLES I-I. MILLER. 1Witnesses BRUCE K. CRAIG, W'. B. CRAIG.

Copies of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Images