US1054446A - Watch. - Google Patents

Description

W. E. PORTER.

WATCH.

APPLICATION FILED Nov. 7, 1911.

COLUMBIA PLANOGRAPH Co" WASHINGTON. n c,

Patented Feb. 25,1913.

UNITED STATES PATENT OFFICE.

WILSON E. PORTER, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO NEW HAVEN CLOCK 00., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

WATCH.

Application filed November 7, 1911.

To all whom it may concern Be it known that I, lViLsoX E. PORTER, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in \Vatches; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1 a view in front elevation of a stop-watch constructed in accordance with my invention with the dial removed. Fig. 2 a broken sectional view on the line a-b of Fig. 1. Fig. 3 a detached view of the centerpinion showing the split or rear end of its hollow shaft.

My invention relates to an improvement in watches, with the construction of stopwatches or chronographs particularly in view, though not limited to use in such watches; the objectbeing to provide dialwork of simple and cheap construction.

With these ends in view, my invention consists in a watch having certain details of construction and combination of parts as will be hereinafter described and pointed out in the claim.

In carrying out my invention as herein shown, I cut the dial-pinion 2 directly upon the outer end of an arbor 3 which I shall hereafter call the center-arbor on account of its correspondence to the center arbors of an ordinary watch, though in my watch it is not centrally located as the name would imply. Upon the said arbor 3 I mount a wheel 4: which is impinged against the in ner face of the said pinion 2. The said wheel a which I shall call the driving minute-wheel, is rotated once an hour. The center-arbor 3 as thus constructed wit-h an integral pinion 2 and furnished with the wheel 4, is shoved from front to rear through the hollow shaft 5 of the centerpinion 6, the said shaft 5 being journaled at its forward end in the front movementplate 7 and at its rear end in the rear movement-plate 8, and having mounted upon it the center-wheel 9 which is interposed be tween the said center-pinion 6 and the front movement-plate 7. For the purpose of securing a friction fit between the arbor 3 Specification of Letters Patent.

Patented Feb. 25,1913.

Serial No. 658,928. Y

will be sprung enough at its split rear end to grip the arbor so that under all normal conditions the arbor, with its pinion 2 and wheel 1, will revolve with the shaft which is driven in the usual manner from the timetrain. In the stop-watch which I am now describing, the centerarbor 3 and its immediately related parts are, as already indicated, not located in the center of the movement in accordance with ordinary usage, but are located to one side of the center of the movement to give ample room at the center of the movementfor the operation of the sweep-second hand shaft to which a rocking motion is given in the usual manner. Therefore the driving minute-wheel 4 is meshed into a corresponding but driven minute wheel 11 having the same number of teeth, revolving once an hour, and provided with a hub 12 which receives the minute-hand which is not shown. The said wheel 11 turns upon a stud 13 mounted in the front movement-plate 7 and made hollow asusual for the reception of the sweep second-hand arbor which is not shown. The center pinion 2 meshes into an hour-wheel 1% provided with a hub 15 to which the hour hand, also not shown, is applied, the hub'15 turning upon the hub 12 aforesaid.

The center pinion 2, the center arbor 3, and the wheel 4: are driven by the timetrain on account of the friction grip of the hollow center-shaft 5 upon the arbor 3, but at the same time the friction thus secured yields to permit the arbor 3 to revolve within the shaft 5 in shifting the hands for setting the watch.

I call particular attention to the fact that my improved watch structure entirely dispenses wit-h a cannon pinion, that term being used in the artto designate a relatively long sleeve frict-ioned over a true center arbor for being driven thereby and carrying the minute wheel which in my improved structure is loosely mounted upon the hub 12 of the wheel 11.

I claim In a watch, the combination with the front and rear movement-plates thereof, of

a split hollow center-shaft journaled in the said plates at one side of the center of the watch and formed with an integral centerpinion, a center-arbor furnished at its front end with an integral center-pinion, and shoved from front to rear into the said split hollow center-shaft with which it is frictionally coupled, a driving minutewheel mounted upon the said center-arbor a center-Wheel mounted upon the split hollow center-shaft, a stud located at the center of the watch, a driven minute-wheel turning upon the said stud and meshed into by the driving minute-wheel aforesaid, and an hour-wheel turning upon the hub of the driven minute-wheel and nieshed into by the said center-pinion.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

VILSON E. PORTER.

it-nesses CLARA L. WEED GEORGE D. SEYMOUR.

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

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