US414124A - Albert f - Google Patents

Description

(No Model.)

A. F. ROCKWELL.

DOOR 0R ALARM BELL. No. 414,124. Patented 004'. 29, 1889.

.fll t E. Rac/aue ji 1Q) I 3513 [M -V 644041441 4 UNITED STATES "PATENT OFFICE.

ALBERT F. ROCKlVELL, OF BRIS"OL, CONNECTICUT, ASSIGNOR TO THE NEIV DEPARTURE BELL COMPANY, OF SAME PLACE.

0 DOOR OR ALARM BELL.

SPECIFICATION forming part of Letters Patent No. 414,124, dated October 29, 1889.

Application filed June 26, I889.

T0 aZZ whom it may concern.-

Be it known that I, ALBERT F. ROCKWELL, of Bristol, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Door or Alarm Bells, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to that kind of doorbell or alarm-bell for bicycles or other purposes that is provided with an alarm-movement having a mainspring that Winds up and that operates by releasing the movement and permitting it to run down and cause a clattering sound, like that of an electric bell, as long as the pull upon the bell-cord or the release of the alarm-movement by any other means is continued.

My improvements consist in providing such a door bell or alarm-bell with means for winding it up by the pull of a bell-wire or other force, which releases and permits the alarmmovement to operate by the force of the mainspring.

Heretofore in door bells, bicycle-bells, &c., of this class it has been necessary occasionally to wind up the mainspring of the alarm mechanism, because in frequent use it will soon expend its force and the alarm-movement will run down. To obviate the necessity of special winding of the mainspring, I have by my invention, as stated, provided for winding it automatically or by means of the same force which releases the alarm-movement and causes it to sound.

In the accompanying drawings, illustrating my invention, Figure 1 is a top view of the alarm mechanism with the bell and part of the frame of the alarm mechanism removed. Fig. 2 is a side elevation.

Referring to the letters upon the drawings, A indicates a suitable frame containing an ordinary alarm mechanism B, of which C is the mainspring, secured at one end to the arbor D and at the other to the main wheel E of the alarm-movement.

F indicates a lever pivoted to the main spring-arbor or to the frame in such relation to the ratchet wheel G, which is fixed to the arbor, as to operate the spring=pawl H, pivoted to the lever, and cause the main- Serial No. 315,629. (No model.)

spring to be wound up whenever the lever is tilted in the direction of the arrow.

II indicates another spring-pawl, which serves to retain the tension of the mainspring as it is wound in the usual manner.

I indicates another lever pivoted to the frame by means of a pivot-post K. This post is provided with a coiled spring L, secured to it at one end and at the other secured to the frame at M. An arm N projects from the post K against some moving part of the alarm 111echanismfor example, in this in stance, the verge O. The coiled spring L tends to keep the post K, the arm N, and lever I turned into the position shown in Fig. 1, so that the arm N forms a stop that bears against the verge and prevents the alarm-movement from sounding.

X is a disk or plate to support the mechanism.

P indicates a wire cord or link, preferably a coil of wire, connecting the free ends of the two levers, and Q indicates an ordinary pullbell wire. When a pull is exerted upon this wire, the levers will be moved simultaneously in the direction of the pull, the arm N will be released from the verge, and the alarm will sound as long as the pull is continued, or at least until the mainspring has completely relaxed itself. At the same time that the arm N is released from the verge O the pawl upon the lever F will move the ratchet-wheel G part of a revolution, and, as that wheel is fixed to the mainspring arbor, the mainspring will be wound up correspondingly. I thus provide for winding up the spring at the same time that I provide for releasing it.

In some cases it might happen that the mainspring would become entirely Wound up, and if a rigid connection were employed between the free ends of the levers it might happen that there would not be play enough between the ratchet and pawl to permit the alarm-movement to be released by sufficient movement of lever I; but by employing an extensible or yielding connection between the ends of the two leverssuch, for example, as a eoil-spring or a rubber spring-it can never happen that the resistance to further Winding of the mainspring will prevent the alarmmovement from being released, because the pull upon the lever I, will always operate it sufticiently whether the lever F inoyes, ojnits pivot ornot.

As door-bells, bicycle-bells, and other species of call-bells or alarm-bells are usually run only momentarily, I find in practice that the ordinary force applied for ringing will ind up the mainspring, and thus keep the alarmmovenient ready to be sounded, and no special Winding is required. I thus secure a doorbell which is a perfect imitation of 311G190."

tric bell, and which does not require batteries to be used and renewed or mainsprings to be specially wound up, but is always au'tomatically Wound and kept ready for use.

Instead of a pull-Wire, any' other means of apply n Qr e to operate, the lev s. F will m' y' ourse. be mpl yed W thee depar ing f m the substance. 0;? my njv n ipni 0f eelir eei he" m he i m fer m rits the ste and releasing the, alarm-move meehaniem or W n i g u the m h be edi ee forma ytere t wi hout depart ng frm he ubsee 0, my en i n, the m ter a t n be 1 tehelve W me haniiems siimul aneen' y opener one to rel afe the, alarm-nloyelnent'and the ot i W nd 1 t mreieepr na e, comb na on w th n. al rm-mere me t prov ded wi a' hein cpr n 'fi ir op rating it, of a stop ifor normally engaging ith th mev men an pre nting ts it ration, mechanism f or njovi ng the stop, releasing the alarm-movement, and ringing the bell the pull of the bell wire, and mechanism having tee the". i r

eplt pe-e be yeeae e' uxe tan wind t by the lever F to Wind up the inainspring,

and the pivot-post K, its spring L, and the arm N, arranged substantially as and for the purpose set'forth.

The mbinet eniwith en a arm-m v ment havi lei me prins er opera in f e tepfilr ermit e g gi g W 1.1 movement rrere i s e n-1 the lever ep rative y eenn ted w t the ma nniei iebi'inat ge 'l rer leem eeted. w th th stop, so as to moye it and release. the, alarm m e en sm, and y din ee ne e meme ree ends. oi e levers, whereby t e lere t ma e perated W t out per tl his the ever themein p ng become fu l 1 .0mm .eeleste 'u a ly as. set forth.

11 esteem 9 all w i h I here heie n sebse t bed. my meme ALBER'I? 1r. oron- Witnesses:

EDWARD: D, Bee -ww .LL,- ETT e m

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