US743418A - Switch-lamp. - Google Patents

Description

No. 743,418. J PATENTED NOV. 10, 1903. C. P. ANNETT.

swmm LAMP.

APPLIOATION rn.r.n mm: 26, 1903.

no 1swmsr.v

UNITED STATES Pategted November 10, 1903.

PATENT @FFICEQ CHARLES F. ANNE'lT, OF CHICAGO, ILLINOIS.

SWITCH-LAM P,

IPECIFIGATION form n pari: of Letters Patent No. 743,418, dateci November 10, 1903.

Appligation filed (fimo 26.1903. Serial 110.168468. (No model.)

iowing is a specfication.

My invention relates to switch-lam ps light ed by means of incandesoent eleotrio-lght bulbs; and the chief objeol: of my in vention is to provide means wherebya single bnlb -may illumine the"signai-lenses and al; the

same time illumina the svvitcbstand and adjacentz switeh conneotions withont pormifling Lhe rays of light to become confused with the rays of light emerging through sa.id lenses.

Heretofore switch-Iamps have usually beeo construoted ho throw light laterally through the Ienses of the lamp; bui; as th'e rays al? light were consbrained lo penetrate on1 y horizontally the switch-opemting parte and those portious of hhe grouncl andof the traok immediately surrouding the" lamp remaned dark and it was necessary ai; nis zht for the switchman or brakeman in operating the swiisch to carry a lantern wsh hm and usetl 1e lantem to raweal the condition of the switchmperating parte. By means of mydevice no lantern is' refiuireci to show the position of the target: and connected prts, andwhere a switchstand of suftioient heighl; is employed bhe rays of light will fall not only upon the switoh-operatingpants, but on the switoh-poin; tsell, th us enalolng the opera; tor to determine al; a glance wheaher the various parts .of the switch are in proper open ative condit-ion. 7 A

In is also my object topreveut; nndue vibration of the,lamp ami toprovide means whereby the l'amp-shell may be readly relhoved and yet a.iord probeetion to the lampbulb when said shell is n ob present.

I also contemplate certain impxoved details of constr uction more paxtioularlypointed out; in the accompanyingclaims I a.ttin these objects by means of the devj,ee illustrated in tho zicoompanying drawig,'zs,in which y Figure 1 is a general side view oithe Clevce, showingthe some mot1nted in positibnupon th switch-stand. Fig. 2 is an. enlanged sitie Viyew, pzpvtly in seetion, showng more clearly webs a the details of constxu0tu. Fig. 3 is an i11- Verted plzu1 view showing the bottom 01 the -lamp. Fig. 4 is a. pian view of thelamp, takeu insection on the line 4-. 4, Fig. 2, to show the construton of the spring-clips fo'r holding the cap in positaion on the lamp-shll.

Similar 1et.ters of reference denota like parte in bhe severa.l figures ci che drawings.

a represents an upright robatable rod or post, which carries the target; a. Sa.id rod is rotated by any convenientmeaus, a. suit-able form beinsz shown in Fig. 1 of the drawings, wherein a represents a beVol-gearseomed ho said posi; aand meshing with the bevel-gear b. S id bevol-gar (2 is secured to the cranks afh b, whioh conneets with the Switcli-rod and swibch (noi; shown) in the usoa.l manner. Said crank-shaft; is operatefl by means of th weig-hted lever 12 The upper extremiby of 'the post a is pief erably approximately rectangular in cross section so as to fil; iato the,sookeb a, f0imed in the lamp -;base o. In 15 desirab lg Ltl striangshen said lamg-base by means of me A threeded boss e recejves a set-' screw a. to rotaia the lamp in position npon said base a. 4 J

The lamp or shell d is provided with fur later al opeungs, (uiarked d,) which are proyided with glass lenses d in the ordinary manner. Ah the top of the lamp is formeda sback d which is greferablfi'r" cylindrical and provided. with the sprng-clips d for rtaining Lhe cap e'ii1- posilaion lgy engaging tl'e de pending flange e thereofl At the center of the cap is the aperture e which receives the depending extremity f of the gooseneck f.

Said gooseneok consista of a tube or pipe mounted upon the stand g a;tzhe side of the posta and adapted to receive the eleclsrio couductors h. Any suitable conduits, as h, lead from the souree of eleot xic supply iuto esaid stand so thai; said cond-pctors may pass from said confluite h iato ai1d through the goosoneck f. By mean s of the bend j" said gooseneck is enabled to support the eleetrio bullo 2' from the top of the lamp-shell-withoui interfering With said shell or with the switzchoperating mechanism. Beneath the cap e,

bolo? the depending exbremityf' of thegooseneck f, is the bulb-sockebj,which is suspended by means oli the oondqctors h, as shown in Fig. 2 of the drawings. Said so cketj isvoff greater diameter than the aperture e in the cap 9, and therefore when the Imnp is removed from the post a said socket j forms a. temporary support for the cap e. In is desirabe that the sfu'd aperture e in the cap e be of slightly greater dameter than the gooseneck f, so that. the post a and the switchlamp nhere.on may be rotatod without setting up friction between the ronatng parts and the statonary parta f. It is also desirable that the socket.j be suspended from the flexible conduotors h a slight distanco below the lower extremtyf of the gooseneck f in order that ho bnlb i may be free 10 swing slightly, and thereby bo releved of such vibrations as'th6 gooseneck f or cap e may receive from passim: trans.

The electric-light bulb i, above menbioned,

"manga in su: nverted postion wishn the larnpghel! d in such relatiou thereto that; the main 11lumnatingportion of sad bnlb is approxmatey at the cenberof the shell, ami thebase i, whichfits into the soeket j, is in the up pez porton of the lamp-shefl, preferably atei poin; above the top of t'he laberal openings d. ()ne ofthe chef pnrposes in motmting the lighbbulb in ths manner s ho render in possible to uize the ight from said bulb ho illumina-te not only the signa-enses in the openngs d, but also the switch-leirer mechanism, as hereinabove explained, and to ths gal-ad, Lhe lamp-hase c is provfied wth the opnngs k k. These enabe tho lamp to illuminate a largo ground area. winhout; permit- ;ng bho xownwardly-projecting rays of light: 30 mngle wifih those projecting laterally '0flgh the signal-lenses.

Ii? isobvons that the form of switoh-lever am form of connections between sad levex- 7 and the rotatbe post a ami aso bbe form of stand g may be consideraby varied without departing from nhe sprit of my invention.

' WhabIc1a-im as now, and desre 130 secme by "LetLer-s Paent, is-- 1. In a switoh-lamp, the oombnation of afotatable pos; a, lampslzell removaoly mounted on sa1d pos; sa.id Iamp having a st-ack projeching; upwardly therefrom; 2. (321.1) loosely fi tting over the stack portion of said shell, said cap being permatxently suspended from .& fixed point of support, and sprng-clips on sad pqst; an apertured cap removably.

mounted on said shell; a. socket insad shell beneabhsad cap for suspending m1 electric- Iighl'. buflh; md a fixed support such as the goosenokfextending dowuward through Lhe apertui-g: in sad cap, Said socket formng a temporary su pport [or said cap when the lamp s remo(red from ibs post.

3. In a switch-lamp,the combinaton of a rotatable post, a Iamp-shell removably mounted on said post; an a'pertured cap removably mounted on saigl shell; a sockeb in said shell beneath said cap for susp ending m1 electriclighl; bulb; a, fixed support; such as thegooseneokfexteudng dow ,nward throflgh the apextu re in said cap, nid sockei; forming a tempor ny support for sa.d cap When the lamp is removed from its post and a. flexble connecbion betvfieen said so'cket and said point of supporb for the purpose descrbed.

4. In a switchdam p, -the combination of a roaatabe post connected to the switch; 3. lamp- 8::

CHARLES F. ANNET'I. Witnessesr IIOVVARD M. (30x, JENNIE I. MCDONA'LD.

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