US984573A - Alarm-clock. - Google Patents

Description

T. LASSEN.

ALARM GLOOK.

APPLIOATION FILED AUG. 12, 1910.

984,573. Patented 'Feb. 21, 1911.

2 SHEETSSHEET 1.

wumto'a 7/ze0d0re Lassen,

T. LASSEN;

ALARM CLOCK.

APPLICATION FILED AUG. 12, 1910.

984,573, Patented Feb. 21, 1911.

2 SHEETS-SHEET 2.

TAIEs PATENT OFFICE.

- THIODOBI 15ml, OI'IBILADDIJHIA, rmmvama.

emu-smear.

984,573. lm 015m" limit- Patented Feb. 21, 1911.-

Application and An a 1:, Q1010. lertal m. maco. To all whom it may holds the lever frictionally against acci- Be it known that I, Tnnoooaa Lassen, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Alarm-Clocks, of which the following is a specification.

My invention relates to improvements in alarm clocks, the ob'ect of the invent-ion being to rovide a cock of this character which wil operate as a reminder at the expiration of an given time within an hour.

A further 0 ject is to rovide a clock of this character of extreme y simple inexpensive construction, and which may beset and reset as often as desired without interfering with the ordinary operation of the clock.

With these and other ob'ects in view, the invention consists in certaln novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1, is a view in front elevation illustratin my improvements. Fig. 2, is a view part in elevation and partly in vertical longitu inal section. Fi 3, is a lan view with the bell remove Fig. 4, 1s a fragmenta de-' tail view in cross section. Fig. 5, is a d etail perspective view of lever 9, and Fig. 6, isa detail perspective view of the pointer 20.

1, represents the clock proper having ordi-. nary hands 2, and 3, mounted onthe spindle 4 which projects through an opening 5 in the glass cover 6 over the face 7 ofa clock, and supported in the ordinary metallic clock casing.

8, represents a screwthreaded post rojecting upward from the top of the c ock case, and on this post a clapper controlling lever 9 is mounted to control the clapper 10'. This lever 9 is provided with a bearing 11 to turn on the post 8, and with a slot 12 concentric with the bearing to receive a screw 13 screwed into the clock case and limiting the pivotal movement of the lever. A wire 14 bent into the particular shape shown is fixed to the lever and its ends-are spaced apart formin an opening, so that when the lever is move to a osition where this opening registers with t e clapper, the latter is free to vibrate, but at an of its other positions'the clapper is hel b the lever. A coiled spring 15 is provide on post 8, and,

hands, it Wlll move the dental movement.

. A nut 16 is screwed on the post against the upper end of the sprin to re ate the tension of the latter, and a ll 17 is screwed onto the upper end of the 1post and is adapted to be struck by the 0 upper. The free end of lever 9 projects out over the face of the clock and is provided with a knob or a finger hold 18, so that the lever may be readily moved by the fingers of the operator. A disk 19 is fixed to the spindle 4 outside of the glass 6, and a pointer 20 is mounted loosely on the spindle 4 and is held by a nut 21 screwed onto the outer end of the spindle. Between the pointer 20 and the disk 19, a coiled sprin 22 is provided and its tension is regulated lay the nut 21. This permits the pointer'20 to be readily turned on the spindle 4 without turning the spindle, butexerts sufiicient friction to compel the pointer to turn when the spindle turns in the ordinary operation of the clock. This pointer 20 registers with a ring dial located around the outer face of the clock, and containing indicating marks and numerals from one to fifty-nine corresponding with minutes of the hour. The pointer 20 not only registers with this ring dial, but also pro 'ects beyond the outer face of the clock s to engage lever 9 and move the lever so as to permit the alarm to be sounded when the pointer reaches an n r' ht position.

The operation is as 01 ows: Regardless of the posit-ion of the clock hands, if the operator wishes to sound the alarm at any time within the next hour, he moves the pointer 20 to register with the numeral on the ring dial corresponding to the number of minutes he desires to elapse before the alarm sounds.

As the spindle 4 turns with the clock pointer toward the lever 9, and when the desired length of time has elapsed, the pointer will engage the lever and move the latter so as to permit the clapper to operate and sound the alarm. The lever 9 is so mounted that it may be swung to-the extreme right, out of the way of the pointer 20, so that the clock may operate without sounding the alarm, but when it is desired to sound the alarm at a predetermined time, the lever is swung to the left and projects over the face of the dial in the path of movement of the pointer.

Various slight changes might be made in ciently far the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and see e of the ap nded claims.

llaving thus escribed mymvention, what I claim as new and desire to secure by Letters Patent is:

1. The combination with a clock, a bell on the clock, a clapper a lever normally holding the clapper against movement and projecting over t e face of the clock, a spindle on the clock projecting outside of the face of the clock, and a pointer frictionally held on said spindle and adapted to engage the lever and release the clapper, substantially as described.

2; The combination with a clock, a bell on the clock, a clapper, a lever normally holding the clapper against movement and projecting over the face of the clock, a s indle on the clock rejecting outside of the ace of the clock, a ring dial around the face of said clock containing numerals to correspond with the minutes of the face of the clock,

and a pointer frietionally held on said spindle adapted to register with the ring dial and promoting be 0nd the face of the clock in the path of the ever, whereby said pointer engages said lever to release the clapper, substantially as described.

3. The combination with a clock, an alarm on the clock, a lever controllin said alarm and rojecting over the face 0 the clock, a spin 1e on the clock rojecting outside of the face of the clock, a ring dial around the face of said clock containing numerals to correspend with the minutes of the face of the ock, a dpointer on said spindle to register with sai ring dial, a fixed disk on the spin dle, a spring between said disk and said pointer, a nut screwed on the outer end of said spindle regulating the tension of said spring, and sai pointer adapted to engage t e lever, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribin witnesses.-

T EODORE LASSEN.

Witnesses:

R. H. KRENKEL, C. E. Form.

Images