US939128A - Fire-alarm. - Google Patents

Description

W. GOODOHILDJ FIRE ALARM.

APF'LICATIQN FILED MAR. 18,1309

Patented Nov. 2, 1909.

2 SHEETS-SHEET 1 (3 6' Z mm: ran Wlter Goodckild mnvsssss UNITED STATES T ATEN T OFFICE.

WALTER GOODUHILD, 01' NEW 1018, I, Y., LBBIGNOR IO JOHN GOODGHILD, 01' m YORK, I. Y.

rum-mu.

Specification of Letters Yateut.

Patented Nov. 2, 1909.

Applloltlon fled latch 18, 1909. Bartel I0. "302.

To all whom it comem:

Be it known that I, \VAursu Goonomw, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain Im rovcmcnts in Fire- Alarms, of which the 0 lowing is a specifiration.

This invention relates to certain improvements in fire alarms, and more particularly in that class of such devices which are electrically actuated, and the object of the invention is in part, to provide an alarm de vice of this character of a simple and coinparatively inexpensive nature, wherein the several operative parts of the device are so compactly constructed and arranged as to be capable of bein conveniently transported from lace to pfiice and applied for use in desiralilc locations, and in rt, to provide a device of this character avlug a novel and improved construction and arrangement of circuit closing means adapted to afford ireater accuracy and certainty of operation uring practical employment of the device.

The invention consists in certain novel features of the construction, and combinations and arran ements of the several parts of the improve fire alarm, whereby certain important advantages are attained, and the device is rendered simpler, less expensive, and otherwise better adapted and more convenient for use, all as will be hereinafter full set forth. I T 6 novel features of the invention will be i carefully defined in the claims. In order that my invention may be the I better understood, 1 will now proceed to; describe the same with reference to the accompanying drawings, whcrcin- Figure l is an elevation of a fire alarm I device embodying my im u'ovcments; Fig. 2 i is a suztiouul view taken lengthwise through i the device in the plane indicated by the line ..--2 in Fig. I; Fig. ii is an enlarged fl'ilgniculary' sectional view taken leugthwisc through the upper part of the circuit closing 1 means, and showin r certain features of coni slructiou which vvi l he hcrciuuflcr rol'rrrcd l to; Fig. l is a smucwhat diugi'iqihic view showing lllt' scvcl'nl circuit connections of i the device. and illustrating cvrluln l'culuri-s of llncircuil closing means, ll fragment of i which in shown in section in the plane ini dicutcd by the line -I in Fig. ll. nud -Fig. I: is u sunn'whul diugruphic view showing the application of my improvements in connection with the bell wiring of a building.

Referring first to Figs. 1 to l, inclusive, wherein my improvements are shown applied to a portable fire alarm device, 10 represents a. suitable su porting board or plate, the up er art of w ich provided with an eye w ere y it may be suspended from a nail or hook in any preferled location, and 12 represents :1. dr cell, which may be of any preferred kin being herein shown as made in the well known cylindrical form, and bein supported upon the lower end of the board or plate 10 by means of spaced metal straps 11, ll.

14 and 15 represent conductors extended from the terminals of the battery cell 12 upwardly slong the board or plate 10 and having their up or ends connected electrically with the bin ing posts of an electric bell 16 or equivalent alarm device which is secured a on the upper part of the board or plate 10. A though not illustrated herein, it will be evident that these conductors 14 and 15 may be embedded in the material from which the board or late 10 is formed, preferably at the back t ereof, so as to be concealed and protected against mechanical injur as much as possible. One of the said con uctors, as 15, includes 5 need terminals, 17, 17, which are embedd in the OPEOSllB sides of a downwardly and rearwart y bent portion 19 integrally produced upon the upper end of a mercurial thermometer tube 20, the main vertically directed portion whereofisextended downwardly along the front side of the board or plate 10, between the bell or alarm 16 and the battery cell 12, and is secured in F position thereon in a well known way by means of transversely extended clips 21, 21,

so that its mercurial column may be conveniently read upon a scale produced upon the board or plate.

The board or plate 10 is recessed op iosite to the upper end of the thcrmou'icter tu 20, as shown at J2, so as to produce a chamber wherein the rcarwurdly and downwardly bent upper end portion iii of said tube is re- 1 ccivcd, and one of the clips 21 is extended across the front side of said chamber 22, while the back of Hllltl chamber is closcd su that in case the tube should be fractured. Ila

bent upper end portion til, wherein the upuced terminals I7, l? are ciulmldrd, will be retaiuud in said chamber 2:3, and will he IUU llli

prevented from being accidentally dislodged therefrom.

The pendent extremity of the downwardly and rcarwardly bent upper end portion 19 of the thermometer tube is also provided with a protective cap or casing 23, which is herein shown as made in the form of a metallic cup, wherein said end of the tube is received and held by means of cement or the like, 0. ply of insulating material of any preferred land being shown at 24, as being interposed between the cup and the spaced term mal s 17, 17 so as to prevent closure of the circuit by contact of said terminals upon the metallic cap or casing 23.

In the use of the device, the is suspended at any desired situation whereat fire is thought to be most likely to occur, in the thermometer tube 20 in umson with the fluctuations of temperature will, if the temperature rise to an excemive or dangerous degree, be forced into the downwardly and rearwardly bent upper end portion 19 of said tube, and therein will complete the v terminals E electric circuit between the spaced 1?, 17, so that the current will be caused to flow from the battery 12 through the wind ings of the bell magnet by way of the conductors 14 and 15, and cause the bell to be sounded during such time as the temperature is thus elevated, or until the device shall have been destroyed.

The rearwardly bent upper end portion 19 of the thermometer tu e, being housed within the chamber 22 of the board or panel 10, is effectively concealed and protected against mechanical injury, and 1S mamtained in position therein even though the tube be broken or cracked by the flames or heat, and to insure the retention within said upper bent end portion 19, of such part of the mercurial column as may have been forced therein even after the tube shall have been cracked or broken by excessive rise of the temperature, I have shown the curved part of the tube provided with a weakened I part 25, which ma bc a file kerf or the like, 1 adapted to define the point of fracture of the tube in case the some be broken b heat.

From the above dcscri ition o my invention, it will be seen that l he improved alarm device constructed in lmcm' hmcc therewith l is of an extremely simple and com iarntivclv inexpensive nature, and is particu only well adapted for use by reason of the uccm'ncv and certainty of its U)(:l'I llml, and it will 1 also be cvidcnt from tic above description that the device is susceptible of considerable change without nmtoriul dcpurlurc from the principles and spirit of the invention, and for this reason i do not desire to ho uodor- Htunll as limiting myself to the precise lorumtiou and nrrnugcua-nt of tho sci-oral purls oi the dcvicu as hen-in set forth in carrying board or plate and the mercurial column rising with- 1 out n invention in practice. For example, it '11 bc evident that the device is capable of embodiment in alarms not especially dcsigned for portable use as above described, and in Fig. 5 1 have shown the application of my improvements to an alarm device connected with a house wiring system. In this figure l have illustrated the several floors o a building provided with bells 16, 16, connected in arallel by conductors 14', 14" with one of t e main conductors, 14 leadin to the battery 12, and havin similar para lel connections at 15, 15 wit l the other conductor 15 leadin to the battery. Each of the parallel con uctors 15', 15 includes a push-button 35, such as are commonly provided at the entrances to a artment houses. 30 and 31 represent con actors extended from the basement to the several floors of the building, and wherewith the spaced terminals 17, 17 of several of the circuit close ing devices, comprising mercurial thcrmomi clcr tubes 20, 20 with the embedded terminals as above described, are connected in l parallel. One of such circuit closing devices may, for example, be provided in the hall entrance to each apartment. The conducl tors and 31 are connected with conductors 38 and 34, respectively, in parallel with the 1 several pushuttons 35, so that should a fire occur in proximity to either of the cirg cuit closing devices, the rise of the mercurial column will establish communication bea tween said conductors 30 and 31, and therei b complete the circuit from the battery 12 'i t irough each bell 16, so as to cause an alarm to be sounded upon each floor of the buildilaving thus described my invention, what i I claim and desire to secure by Letters Patcut lSr'-- 1. A device of the character described having a supporting panel having a chamber provided with an opening at t e outer sur- 5 ace of the panel, a battery and a bell carried by the panel, a mercurial thermometer tube extended upon the outer surface of the panel below said chamber and provided with on upper part. reuru'nrdly directed in said chamber, and no extremity pendent from said rcurwardly directed upper part. within said chamber, and circuit connections cxj tcndcd from the battery to the bell and including spaced terminals embedded in the pendent extremity of the thermometer lube within said chamber of the pnuchand adapted for electrical eomomnication through the mercurial column lllomof upon the use of temperature.

' A circuit closing mraus for lirc ulurm devices and the lilo-,hiuviug u mercurial lhcrmomnlcr tuho provided with u pcudcul lat orally hunt nppcr portion scaled ul ils lower extremity and adapted to rorcivo the mar cul'iul column upon elevation of tempera liiu ' I o I lure, spaced terminals embedded m Band In walne s whemof I have hereunlusngnal mmlunt laterally bum. puruun uf [he lubu my mum, II] (he presence of um HHbhtl'ibillg and ndapmll for cmmnumculwn through the Wltl'lflb'tri.

mercurial column npnn @he risv of lempex a- E WALTER GUODUl-ULU. ture, and n metalhc unsung arranged to m- Wnnesws: rluse the sealed extrenuty of the pendent pur- J. D. COILlXhl-Jfl,

liun 0f the tube to prevent fracture thereof. A. F. Coxxz'rr.

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