US448510A

US448510A - dubois

Info

Publication number: US448510A
Authority: US
Publication date: 1891-03-17
Anticipated expiration: 1908-03-17

Description

(No Model.)

A. A. DUBOIS. ILLUMINATED CLOCK.

1101448510. Patented Mar. 17, 1891.

INVENTOR:

ATTORNEYS NiTED STATES PATENT Orricn,

AUSTIN A. DUBOIS, OF BROOKLYN, NElV YORK, ASSIGNOR TO MORRIS HART, OF SAME PLACE.

ELLUMINATED CLOCK.

ATIQTDT forming part of Letters Patent No. 448,510, dated ldarch 17, 1891.

Application filed September 20, 1890- Serial No. 365,624. (No model!) To aZZ whom it may concern:

3e it known that l, AUSTIN A. DUBOIS, of Brooklyn, in the county of Kings and State of New York, have invented a new and Im 5 proved Illuminated Clock, of which the following is a full, clear, and exactdescription. My invention relates to improvements in illuminated clocks; and the object of my invention is to produce a clock by means of which the time may be observed in the dark as well as in the daylight, and a further object of my invention is to produce a clock which may be used both day and night; and to this end my invention consists in certain I 5 features of construction and combinations of parts, which will be hereinafter fully described, and then pointed out in the claims. Refe ence is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a broken side elevation of the device as adapted for night use, with a portion of the mechanism. shown in section. Fig. 2 is a side elevation of a modified form of clock and attachments for the same, the view being partly in section; and Fig. 3 is a front view of the clock shown in Fig. 2 as adapted for day use. The clock it is the ordinary spring-clock,

having on the under side of its case projecting feet a, which enable itto rest securely upon a support. The clock is provided with the usual gear mechanism and with a central tube B, which is driven by a gear-wheel B, connecting with a pinion c 011 the post O, the said post being turned by the ordinary clockwork.

As usually constructed, the spindle which .0 carries the minute -hand extends outward through the tube B, and the minute-hand is aflixed to the outer end of the spindle, the hour hand being fixed to the tube, as described; but, as shown in the accompanying 5 drawings, the tube 13 projects beyond the spindle, which is indicated by dotted lines in Fig. 1, and other means must necessarily be provided for carrying the minute-hand, and to this end a gear-wheel O, corresponding in size to the gear-wheelB is fixed to the outer end of the post- 0 and meshes with a pinion (Z, which turnslocsely on the tube l5, and which is fixed to the sleeve D, which carries the minute-hand D, so that the minute-hand has the same speed and movement as if attached to the ordinary central spindle. "he tube 13 is made to project from the face of the clock and through the glass A, which covers the same, although the glass'may be dispensed with, if desired.

A lampF is provided with a socketf in the bottom, which fits the tube 13, and when the clock is to be used in the night it is placed upon its back, as shown in Fig. 1, and the lamp is placed upon its face, with the tube 13 projecting into the socket f, so that the lamp will turn with the tube. The lamp F is provided with a globe F, which is preferably of ground glass, and which has the hours of the day inscribed thereon, the hours being regu- 7o larly spaced around its circumference, and subdivisions of the hours may be marked upon the globe, if desired. A hand G is made to project from one side of the clock to a point opposite the globe F, the said hand having its lower end 9 bifurcated. so that it may be placed upon one of the feet a of the clock and securely held in place thereon.

It will thus be seen that the lamp and globe will rotate at the same rate as the tube B, So which carries the hour-hand, and as the hand G is stationary the figures indicating the hours on the globe F will be successively brought opposite the hand, and the time is indicated by the position of the figures in relation to the hand.

In Figs. 2 and 3 is shown a modified form of the device, in which a supplementary dial His placed directly upon the face of the clock A the said dial having a central perforation go which fits closely upon the tube 13, which carries the hour-hand, and .the tube is made to project through the dial so as to enter the socket f of the lamp when the lamp is placed upon the dial. The dial is also provided with a 9 5 flange 7i, which extends upwardly from its edge, and which serves to hold the lamp F in place, the lamp being preferably of a size to fit nicely within the flange of the dial. lhe works of the clock rfare of the ordinary con I00 struction, except that the tube 13, which carries the hour-hand, is made to project from the face of the clock, as already described. A hand G is hinged to one side of the clock A the pivoted end of the hand having flanges g, by means of which the hand is pivoted to the ear j, which is fixed to the clock-case. The hand G may be turned so as to extend opposite the globe'F of the lamp when the lamp is placed upon the dial H, or the lamp may be removed and the clock placed upon its feet in the usual manner, and the hand turned to extend across the face of the clock, as shown in Fig. 3,in which position it serves asan ordinary hour-hand, as the dial H revolves with the hour-hand spindle. When the clock is placed upon its back and the lamp mounted thereon and lighted, the figures on the globe F may be distinctly seen from any part of the room and the timeindicated as distinctly as in daylight.

It will be seen that for ordinary day use the lamp is removed from the clock; but, if desired, the clock may be allowed to remain upon its back with the lamp thereon, as described, and the time will be indicated as in the night, although with not as much accuracy as if the lamp were removed and the clock placed upon its feet.

Having thus described my invention,I claim as new and desire to secure by Letters Patent- 1. The combination, with a clock having the hour-hand tube extending from the face thereof, of a dial mounted on the hour-hand tube, a lamp adapted to rest upon the dial and having in its bottom a socket for the hour-hand tube, a globe for the lamp, said globe having the hours of the day inscribed thereon, and a hand hinged to the clock-case so as to be turned opposite the globe when the lamp is in position and to extend across the dial of the clock when the lamp is removed, substantially as'described.

2. An illuminated clock comprising a clock having the hour-hand tube projecting from the face thereof,'a dial mounted on the tube and provided with an outwardly-extending flange, as shown,a lamp adapted to fit within the flange of the dial and having a socket in its bottom to fit the hour-hand tube, a globe for the lamp, having the hours of the day inscribed thereon, and a hand hinged to the clock-case so as to extend opposite the globe when the lamp is in position and to extend across the clock-dial when the lamp is removed, substantially as described.

AUSTIN A. DUBOIS.