US158084A - Improvement in clock-movements - Google Patents

Description

n. Hnoncncu.

Clock-Movements.

Patented Dec. 22, 1874;

l mmillllll'llm .lll/[Ill UNrTnD STATES,

PATENT OFFICE..

ROBERT HITCHCOCK, OF WATERTOWN, NEV YORK.

IMPROVEMENT IN CLOCK-MOVEMENTS.

Specification forming part of Letters Patent No. 158,084., dated December 22, 1874; application filed August 27, 1874.

To all whom it may concern:

Beit known that I, ROBERT HrToncocK, oi' Watertown, J eii'erson county, New York, have invented certain new and useful Improvementsin Olock or Spring Movements, oi" which the following is a speciiication:

This improvement in clock or spring movements has been designed by me with special reference to the use of the same in lamps employing either a forced blast or oil-pump, or both, as illustrated, for instance, in Letters Pat ent granted to me April 23, 1872, N o. 125,954, January 7, 1873, No. 134,547, August 12, 1873,

4No. 142,103, and December2,1873, No. 145,176.

I now give the movement a circular or cylindrical, instead of a rectangular, form, its various parts being mounted in acylinder and on its head and accompanying upper plate, instead of upon or between rectangular plates, as heretofore. By the arrangement I have now devised, the adjustment and relations of the spring and its adjuncts, the train and all the parts or' the movement are materially changed from the old method; and I 'thereby secure the advantages of reduction of the number of parts, compactness, reduction of weight, cheapness, and increased strength, durability, and regularity ot' running.

The manner in which I construct the movement in order to secure the above-enumera ted advantages is as follows, reference being had to the accompanying drawing, in which- Figure l is a vertical central section of my improved movement, representing also the position which it occupies in the lamp. Fig. 2 is a perspective view of the movement. Fig. 3 is a plan of the train. Fig. 4 is an underside view oi' the ratchet-plate, which serves also to hold the movement in place in the lamp. The mainspring A is placed in a barrel, B, provided with heads a a. On the upper one is permanently ixed the main wheel O of the movement, in the form ot' an internal gear, which constitutes part of the mainspring barrel. This gear produces greater uniformity of action in the train, for the reason that more teeth of the gear are in bearing upon the teeth or leaves of its pinion than is the case with gears of the opposite kind, and also for the reason that the pinion moves in the same direction with the gear, instead of reversely, as is the case in movements heretofore employed. This kind of gear-wheel also makes practicable such a construction of the movement as to bring within the circumference of the cylinder all the wheels or' the train. The thickness of the main gear-wheel, and consequently its strength, can be increased without changing the relations ot' the other parts, which cannot be done with the kind heretofore employed. The cylindrical jacket D, which incloses the mainspring-barrel, is provided with a permanent head, d, upon which is mounted the train of wheels of the movement, this head also serving as one of the bearings o of the mainspring-arbor G. The jacket is a substitute for the ordinary pillars, is much stronger than pillars, and is also a protector against dust and dirt. The plate E, which is fitted to the lower end of the jacket, and secured to it by lugs and pins, serves as the mounting for the ratchet b, clicks, and clicksprings, cf, and as the other bearin g of the mainspring-arbor. The mainspring-arbor projects through the last-mentioned plate, and in the operation of winding the mainspring-barrel revolves freely in its jacket. This plate E is also a dust and dirt protector. Upon the upper end or head of the jacket is mounted a plate, g, by means or' pillars It, between which head and plate is mounted the train of wheels of the movement. Fitting the exterior of the jacket, at its upper end, is a cap, F, employed as a dust-protector. The sleeve i on the side of the cap is for the passage through it of one of the pump rods j in case a pump is used.

By the means thus employed, the dust and dirt are as eii'ectually excluded from the running parts of the movement as is practicable,

and oil also is excluded when the movement is employed in lamps. The train of; wheels ot' the movement, mounted between the head d and plate g, is shown in Fig. 8. lll/'heel 2 is driven by pinion 1, which projects down through the head, so as to engage the internal gear-wheel,as seen in Fig. 1, the lower journal of the pinion taking its bearing in a bracket projecting laterally from center bearing o. From wheel 2 movement is communicated to wheel 3 and its pinion; thence to wheel a and its pinion, and wheels 5 and (l and their pinions, thence to crown-wheel 7,

thence to vertical worm-wheel 8, which drives Worm-shaft 9, on the upper end of which, in case the movement is used for producing a blast, is mounted the fan 10, by which the air is driven to the dame. The upper end of the Worm-shaft 9 takes its bearing on across-piece on a cap or sleeve surrounding the fan. The pump-rod j is actuated by means of pins on wheel 4, which strike projecting arms on rod j and compel it to rocl; or vibrate.

It is of course understood lthat one end of the mainspring is fast to the barrel, and the other end is fast to the arbor.

The power of the movement, when used in lamps can be increased by Widening the spring Without an increase of the diameter of the mainspring-barrel, and Without loss of oilspacein the lamp. The movement has been described with special reference to its use in lamps, but it may be employed for other purposes.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. The combination, with the mainsprinp,r and mainspring-barrcl, of the train arranged above, and Within the compass of the prolongation of, the barrel, and on vertical axes, substantially as shown and set forth.

2. The combination, with the train and mainspring, of the mainspring-barrel and internal gear main Wheel, fixed to and forming part of the head of the barrel, as shown and set forth.

3. In combination with the mainspring and mainspring` barrel and arbor, the jacket having two heads, the upper one supporting the train, and the lower one constituting the ratchet-plate.

4. The dust-cap inclosing the train, and extending down to, and so as to form a continuation of, the jacket, as shown and set forth.

1n testimony whereof I have hereunto signed my name this 17th day of August., A. D. 1874.

ROBERT HITCHCOCK.

Witnesses:

S. P. NEWELL, L. P. GOODWIN.

Images