US428198A - Signors of one-third to charles allen - Google Patents

Description

(NoModeL) J. ALLEN 8: S. GOULDEN.

ALARM BELL.

No; 428.198. v Patented Ma 20, 1890.

I UNITED Sterne P T NT JOSEPH, ALLEN AND SAMUEL GOULDEN, OF NEWVARK, NEV JERSEY, AS- STGNORS OF ONE-THIRD TOCIIARLFS ALLEN, OF TORONTO, CANADA.

ALARM-BELL.

SPECIFICATION forming part of Letters Patent No. 428,198, dated May 20, 1890.

Application filed August 22. 1889.

To all whom it may concern.-

llc it known that we, JOSEPH ALLEN and SAMUEL GoULnEN, subjects of the Queen of Great Britain, residing at Newark, Essex county, New Jersey, have invented certain new and useful Improvements in Alarm-Bells,

fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention consists in the special construction herein set forthfor an alarm-bell.

In the annexed drawings, Figure 1 is a plan of the bell with the gong removed, but its periphery indicated in dotted lines. Fig. 2 is a similar view of the same with the disk b and the parts in front thereof removed. Fig. 3 is an. edge View of the entire hell with the gong and casing in section; Figs. at and 5, an elevation and plan, respectively, of the hammerspindle and the hammer-arms. Figs. 6 and 7 are similar views of one of' the hammers,

and Figs. 8 and 9 are similar views of one of the rivets for pivoting the hammers h to the arms (I and e.

a is the gong, and Z) the casing inclosing the mechanism for operating the hammers.

I) and b are disks fitted within the casing and perforated to form bearings for the spindlcs of the several cog-wheels inclosed by the casing.

0 is the ham mcr-spindle, provided with arms (Z and e, projecting laterally from its outer end, and with the cog-wheel c on that portion between the disks 1) and b Thdarms (I. and e have slots (1 and 0', respectively, near their outer ends.

The hammers h are each provided with ears 7;, having slots 71. and to secure them to the arms 4 and e rivets '7', having heads or washers a" secured to their ends, are inserted through the slots in the cars it and arms (Z and e. The slots (1', e, and 71 3,113 each fitted loosely to the rivets 'r to allow perfect freedom of movement of the hammers on striking the edge of the gong, as shown in Fig. 1.

fis a spindle having a cog-wheel g, mesh-, ing with the cog-wheel c, and cog-wheel '11 secured thereon, and serves merely to transmit the motion of the driving-spindle j, having the toothed sector 7;: secured thereon, to the hammer-spindle c. The sector 76 meshes with Serial No. 321,634. (Nomodeh) 1' is formed on. the end attached to the spindlej, to which is attached oneend of aspring 8, having its opposite end fastened upon a pin p, projecting from the inner face of the disk b The spring 5 and wire w are omitted from Fig. 3 to avoid obscuring the rem-aining parts of the driving mechanism.

To operate the device, the'wire to, which is intended to be connectedwi'tha suitable bellpull, is drawn forward, causing a corresponding movement of the levcrl and the spindle to which the latter is secured. This action causes a similar movement. of the toothed sector k, and thus the rapid rotation of the hammer-spindle c and armsd and e mounted thereon. Each hammer on strikingthe gong, as at the left sideof Fig. 1, is allowed to recoil, as shown in dotted lines a, while that upon the opposite arm i's thi'own outward by the centrifugal force produced by the rapid rotation of the spindle, as indicated in full lines at the right of Fig. 1 and in dotted lines 3 in the same figure. When the wire is released by the operator, the spring checks the movement of the mechanism and'operates to drive it in the opposite direction. Thus a single actuation by the operator serves toimpart a double operation to the driving mechanism.

Although in the arms (1 and c and the ears h theslots might be omitted without wholly preventing the practical working of the-hammers mounted upon such rotary spindle, it is evident that the slot in one or both of such elements gives a much freer movement to the hammers, and they-arc thus much more liable to assume their extended positions in readiness for each stroke, it slotted as described.

It is immaterial how the handle or lever Z be actuated, as it might readily-be moved by a suitable lever or handle engaging with its free end, as we have sometimes constructed it,

or by any other suitable means.

\Ve are'awa're that it is not new to provide a eall-bell or alarm with a rotary spindle aetnated by a series of cog-wheels, and that a toothed segment has been employed to operate "in resistance to a springin driving the mechanism for actuating such rotating hammer-spindle; but We are not aware-that the driving-spindle in such class of alarm-bells has. ever been provided With a lever fixed thereon and adapted to be moved either by the tension of a cord attached to a bell-pull orb'y. means of an auxiliary lever, as above described.

\Ve hereby disclaim all former eonstruetions,'limiting ourselves to that specifically claimed herein.

Having thus set forth our invention, what we claim herein, and desire to secure by Lettors Patent, is

The eombination,witl1 the gong and the 1" tary hammer-spindle provided with a head having hammers pivoted thereon, a drlvingspindle, 'a-n intermediate spindle, and cogwheels npon the'several spindles to transmit the motion of the driving-spindle to the hammer-spindle, of a lever tixed upon the driving-spindle, a spring applied to the lever to hold it in its normal position, and means for operating the lever, substantially as shown and described;

In testimony'whereof we havohereunlo set our hands in the presence of two subscribing Witnesses. I

J OSElll ALLEN. SAMUEL (1K )ULDEN Witnesses:

'lHos. S. CRANE, F. 0. FISCHER.

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