US703854A - Electric alarm-clock. - Google Patents

Description

No. 703,854. Patented my I, I902.

w. E. THROOP & w. s. INGRAHAM.

ELECTRIC ALARM CLOCK.

(Application filed Feb. 25, 1902.)

(No Model.)

lzwenions: William ETlvraop 6 y W m Witnesses.-

UNITED STATES PATENT OFFICE.

WILLIAM E. THRO OP AND IVILLIAM S. INGRAHAM, OE BRISTOL, CONNECTICUT, ASSIGNORS TO THE E. INGRAI'IAM COMPANY, OF BRISTOL, CONNECTICUT, A CORPORATION OF CONNECTICUT.

ELEoTRIc ALARwnoLooK.

SPECIFICATION forming part of Letters Patent No. 703,854, dated July 1, 1902.

Application filed February 25,1902. Serial No. 95,582. (No model.)

To all whom, it may concern:

Be it known that we, WVILLIAM E. THROOP and WILLIAM S. INGRAHAM, citizens of the United States of America, residing at Bristol,

in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Electric Alar1n-Clocks, of which the following is a specification.

Our invention relates to electric alarm- 1o clocks; and it has for its object the provision of a device of this character which will be simple in construction and reliable in operation.

A further object of the invention is the provision of a clock providedwith a device com- I 5 posed of insulating material which will hold the signal out of actionuntil the time has arrived for which it is set tobe effective.

A further objectof theinvention is the provision, in a clock, of a disk composed of insulating material, said disk being so constructed that'an electric connection for effecting the signal will be established at the proper time.

Other objects of the invention will be set forth in the following description.

In the accompanying drawings, Figure 1 is a front elevation, partially broken away, of a clock in which our invention is embodied. Fig. 2 is a section showing a post or arbor and adjacent parts to which our invention is applied. Fig. 3 is a perspective view of a resilient arm employed in connection with ourinvention.

Like numerals designate similar parts 5 throughout the several views.

Referring to the drawings, the numeral 5 designates a clock-casing, which may be of any desired form, and in this casing is mounted a clock 6, which, with the exception of the details of our invention applied thereto, may

be of any ordinary construction.

Designated by the numeral 7 is an ordinary setting-dial, carried by an arbor 8, as is common in alarm-clocks, and to thehub 7 of this dial is secured a disk 9, composed of insulating material, said disk having a notch 9 extending to its axis and leading to and exposing the metal of the hub 7 to which it is sooured, as shown in Figs. 1 and 2.

Resting upon the disk 9 is a rider 10 of a preferably resilient metallic arm 10, which is secured to the clock-casing 5 by a bolt 11, passing through an eyelO of said arm, and in contact with a post 26 isa wire 12, leading to an electric battery 13, shown as located in the bottom of the clock-casing, although it may be differently disposed, if desired. This wire is clamped to one of the poles of the battery by a screw 14-, and leading from the other pole of the battery, to which it is clamped by a screw 15, is a wire 16, connected by the usual clamping-post and connections to magnets 17, carried in a frame 18, secured in the exempliiication given to the lower part of the back of the clock-casing by a screw 19. Leading from another post 20, connected with the magnets 17, is a wire 21, shown as attached to one of the metallic side frames 22 of the clock 6, although any other suitable part of said frame may be utilized for this purpose without departure from the invention.

Designated by the numeral 23 is a bell, shown secured to an arm 18, projecting from frame 18, andalso carried by this frame is the usual clapper or hammer 24 for sounding an alarm when the magnets 17 are energized, as will be hereinafter described.

A switch 25 is pivoted to the clock-casing, and said switch serves to unite the post 26, with which wire 12 is connected, with the bolt 11 of resilient arm 10 when the switch is turned to the position shown in dotted lines in Fig. 2.

To cause the alarm to operate, switch 25 is first turned on, and thedial 7 is then set in the usual manner to indicate the time it is desired to sound said alarm, so that when the recess 9 of disk 9 arrives at a certain point the rider 10 of resilient arm 10 will snap into said notch and bear against the metallic hub 7 of the dial, thereby establishing an electric connectionthrough the clockframe between the battery and the magnets until said connection is broken by the rotation of the disk and the consequent elevation of the arm 10.

If the switch 25 is turnec off, thereby breaking the circuit, the clock will operate in the usual manner without sounding the alarm.

Our invention is not limited to the precise arrangement and location of the various parts shown, for they may be differently disposed, nor is it limited to any specific battery or method of connecting said battery with the various cooperating parts, nor to a specific kind of signal, for other signals may be substituted for the bell, if desired.

Having thus described our invention, what we claim is- 1. In an alarm-clock, the combination,with a clock-casing, of a resilient arm projecting laterally from the interior of said clock-casing and carryinga rider at its free end; clock mechanism; a setting-dial; a cam-disk of insulating material carried by the arbor of the setting-dial and with which the rider of said resilient arm is in engagement; an electric battery; a bolt connecting said arm to the clock-casing; a pair of electromagnets; an electric circuit, of which the clock-frame constitutes a part, controlling said magnets; and a switch connected to said bolt for establishing the circuit through the clock-frame when the rider of the resilient arm enters the notch of the cam-disk and engages the arbor of the clock.

2. In an alarm-clock, the combination, with clock mechanism, of a recessed cam composed of insulating material carried by an arbor of said clock mechanism; a resilient, metallic arm having a rider in engagement with the cam and adapted to engage said arbor when it enters the recess of the cam; a clock-casing; a bolt for securing the resilient, metallic arm to said clock-casing; a switch in engage ment with said bolt; a contact device secured to the clock-casing, and with which said switch is adapted to engage; a wire leading from said contact device to the battery; a battery; an electromagnetic device; a wire connecting said electromagnetic device and battery; an alarm controlled by the electromagnetic device; and a wire connecting the electromagnetic device with the clock-frame.

In testimony whereof we affix our signatures in presence of two witnesses;

l/V. E. THROOP. WM. S. INGRAHAM.

Witnesses i ALFRED Ron, JAMEs GAY.

Images