US820669A - Clock. - Google Patents

Description

No. 820,669. 'PATENTED MAY 15, 1906.

W. E. PORTER.

. CLOCK.

APPLICATION IILED SEPT. 11. 1905.

MUM a. nnmm cu. Phmmuvmnnsns, wrsumumm n. c

UNITE STATES PATENT OFFICE,

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

CLOCK.

Specification of Letters Patent.

Patented May 15, 1906.

Application filed September 11, 1905. Serial No. 277,917.

To all whmn it may concern:

Be it known that I, WILSON 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 Clocks; and I do hereby declare the following, when taken in connection with the accompanying drawings and the figures 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, 1n

Figure 1, a view in front elevation of a clock-movement constructed in accordance with my inventionwith the front movementplate removed; Fig. 2, a plan view thereof; Fig. 3, an enlarged broken view of the movement in horizontal section on the line a, b of Fig. 1..

My invention relates to an improvement in that class of clock-movements in which the mainspringarbor is concentric with the center arbor, the object being to simplify movements of the character described.

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

In carrying out my invention as herein shown I employ a mainspring-arbor 2, having a central longitudinal passage the rear end 3 of which is squared for the reception of a winding-key. The rear end of the arbor is reduced in diameter to form a trunnion 4, which runs in a hole 5 in the rear movementplate 6, the lengthwise movement of the arbor rearward being prevented by a shoulder 7 at the base of the trunnion 4. At its forward end the arbor 2 is provided with an integral ratchet-wheel 8, the teeth of which are engaged by a pawl 9, operated by a spring 10 and pivoted upon the front face of the main wheel 11, which turns upon a bearingshoulder 12, formed upon the forward end of the arbor 2 at a point directly to the rear of the integral ratchet-wheel 8, the main wheel 11 being interposed between the rear face of the ratchet-wheel 8 and a ring-like springwasher 13, which is mounted upon a shoulder 14, formed upon the arbor 2 at a point directly in the rear of the bearing-shoulder 12 and is smaller in diameter than the same. At

its extreme forward end the arbor 2 is formed 5 5 with a trunnion 15, turning in a hole 16 in the intermediate movement-plate 17. A shoulder 18, formed betweenthe base of the trunnion 15 and the ratchet-wheel 8, reduces the friction between the forward end of the arbor 2 and the rear face of the plate 17 The trunnion 15 is formed with a small central bearing-opening 19 for the reception and bearing of the inner end of the center arbor 20, the forward end of which has bearing in the front movement-plate 21, whereby the rear end of the center arbor is journaled directly in the forward end of the mainspringarbor. A flange 22 upon the inner end of the center arbor 2O bears upon the flat front face of the trunnion 15 and holds the center wheel 23 from engaging with the front face of the intermediate plate 17, the said center wheel being mounted upon the center pinion 24, which is frictionally coupled with the 7 5 center arbor 20 by means of a coiled spring 25 and a collet 26. The rear end of the center arbor 20 projects rearward into the central opening 3 of the arbor 2 for engagement by a handset inserted from the rear into the arbor 8o 2 for setting the hands. The main wheel 11 meshes into the main pinion 27, which is mounted upon a shaft 28, through which movement is communicated to the center pinion 24 in any approved manner, not necessary to describe or illustrate, as it forms no part of the present invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a clock movement, the combination with front, rear and intermediate movementplates, of a center arbor journaled at its front end in the said front movement-plate, a mainspringarbor arranged concentrically with the said center arbor and having its rear end journaled in the said rear movement-plate and its forward end formed with a trunnion journaled in the said intermediate movement-plate, the said trunnion being formed I00 ing the mainspring.

with a bearing-opening for the reception of In testimony whereof I have signed this the rear end of the said center arbor which is specification in. the presence of two subscribthus j ournaled directly in the said. 1naining Witnesses. spring-arbor which has a longitudinal passage to the center arbor for setting the hands Witnesses: and Which is adapted to be rotated for wind CLARA L. l/VEED,

I GEORGE D. SEYMOUR.

"WILSON E. PORTER.

Images