US1103603A

US1103603A - Smoke-indicator.

Info

Publication number: US1103603A
Application number: US75493713A
Authority: US
Inventors: Thomas W Mcneill; Ira J Babcock
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-03-17
Filing date: 1913-03-17
Publication date: 1914-07-14
Anticipated expiration: 1931-07-14

Description

" To all whom it may concern:

, UNITED strairns PATEN OFFICE...

' THOMAS w. MONEILL AND IRA J. BAIBCOCK, or CHICAGO, ILLINOIS.

Be'it known that we, THoMAs W. Mo- NEILL and IRA J. BABoooK, citizens ofthe UnitedSt-ates, residing at Chicago, in the :county of Cook and-State of Illinois, have invented certain new and useful Improvements in Smoke Indicators, of which the following is a specification.

Our invention relates to improvements in .mioke'indmators and more particularly to.

apparatus for association with a smoke eduction passage, as the bree'ching, stack, or other ductthrough which the products of combustion from a fuel burner pass, to enable its user to observe the relative transparency or opacity existent within said passage.

One of the objects of our invention is to provide an apparatus operating according to the principles embodied in the construction of our prior patent No. 1,012,403, dated December 19, 1911, for, smoke-indicators, but having certain advantages over our previous yi-nventlon -in that its usein dusty atmosreflecting mirrors, and in other matters "pheres does not -result in a disturbing depositn'pon the transparent closure and the which will become more apparent from a consideration of ,the following description ing, or like,smokeseductingpassageway or a fluke, having applied thereto part of the ap- 3 a removed when taken in 'coiijunotionwith the drawing,

wherein I Figure 1 is a sectional view'of a breechparatus; and Fig. 2'is a. sectional view of another part ofthe apparatus which in use is adapted p'aratus shown inFi'g. 1.

" In the showing illustrated in tlie drawing,

[5 indicates. the .breeching, exemplifying any suitable flue or other passageway leading from a fuel burner, and 6-6 indicate perforations'in' the walls oflsuchbreeching, the

perforations being diametric'ally opposite and each having associated therewith a tube,

' indicated respectively at 7 and 8. Each of said tubes 7 and 8 is relatively short and has at one end'a. flange 9 by which it may be secured to the breeching. For cooperation l I relatively short tubes 7 and 8 I provide suitable regulable-vent caps,

with the free otherwise-open nd of each said one whereof carand the other ries an illuminatingmeans"? whereofis closed. by a plate of glass.-

' cifically, in the particular construction shown for purposes of disclosure,

10 indicates asmonn-mnicaron.

\ Specification of Letters Patent. Application filed March 17, 1913. Serial No. 754,937.

to be located atsdmerdistance from but in almement withthe ap- "same sort of perforations,

Patented July 14,1914;

thimbleadapted to inserted within the free end of tube 7, said thimble having a bead at 11 for coaction with the free edge 'of said tube and being outwardly. bent, as

at 13,- from a point somewhat beyond the bead 11, the thimble between said bead and.

outwardly bentportion having a series of perforations 14. For coaction' with said perforated portion, we provide a similarly perforated, 'rot-atably shiftable, ring, so that the thimble may be opened to provide a series of vents into the tube 7, may be closed to prevent passage of air into the thimble, or may be partially opened to admit regulable quantities of air. 4 I

Hinged as at 16 upon the outwardly bent portion 13 of the thimble 10, we provide a reflector 17,a spring clip 18 being preferably provided on. the tube portion 13 for engagement over the edge of the reflector to retain it tightly in place as a closure upon theend'of the thimble. Within the reflector we mount a suitable means for producing a light, such means preferably taking the form of an electric incandescent lamp 19, current to which may be supplied by wires extending through the end 20 of the reflector.

It will be seen'that the construction isoperable to completely close the thimble or to open the same by rotation of the ventedring 15.

generally ing, in lieu of'therefieotor and lamp, aglass plate 21'. In other respects the construction of the closure for tube 8 resembles that for. tube 7, heretofore described, having the coa'cting perfo rated ring, hinge clip, etc., so that it will gnnecessary for--us to. describe the same-1n etail.

In this construction, the light from lamp 19passes through tube 7-, across. the smoke flue'5, through tube 8, and the glass plate 21' which is carried by the thimble for said tube Upon the tube 8 we provide a tliiinble, similar in construction, but hav- 8,3so that it may be observed and the density of smoke passing through the flue thereby 'detected. It usually happens, however,

that the observations are desired to be taken at points relatively remote from the'flue to which the thimbles described have been applled, and thatsuchpoint of observatlon s not in direct alinement with the tubes -7 and 8. -'Our invention therefore contemv plates,

in conjunction with the apparatus already described, a deflector mechanism such as shown in Fig. 2. This mechanism,

as illustratively shown in the drawing, com-' prises a triangularly sh'aped casing member 1 having one of its sides open, as indicated 5 at 26, over the opening of which may be hinged areflecting mirror 27, the hinge being indicated at 28 and a closure-retaining -cl ip',' similar to clip v18 for the lamp-reflector, being indicated at 29. The other two '1 sides of said triangular casing each provide 'a sleeve, indicated respectively at 30 and 31,

- over one of w ich a relatively short tube '32, may be inserted. said tube having free edges as at 33. When the readingfmay' be light, the other sleeve may be formed, as at 34, toprovide a hinge and at the diametrically' opposite side carries a clip for ,en-

gagement of a cylinder23, a translucent o screenbeing provided, as indicated on .the drawing, to receive the ray of'light and thereby facilitate the reading. When, how-' ever more than one turn of the light'ray is,

' required in order'to bring it -to the point of.

observation, intermediate deflectors'maybe used which omit the translucent screen In this installation of devicesas' above described',: as' many of the mirror-carrying casin s 25 maybeused as willbe necessary to de act the ray, of light from the lamp 19" to the'desired point. of observation, and each ofsaid casir'lgs may be placed as far from the preceeding one, or from' the flue t'o WhiCh. the tube 8"is applied, as may beco'nvenient. In our previous. disclosure we have shown, a'continuou's tubing leading from one to the other of the turns required in the path of the light, but we'have, found from practical experience that, in the passage of 4 dust-laden air through the tubing and pastthe m rrors 27-,a more or less opaque deposit soon accumulates upon said mirrors so that the indication at the end of the tubing is not,

accurate.. The present invention will beseen to avoid this objection which is'pres ent" :11 our previous apparatus, j Q

- 'In the use of the apparatus, setup as above stated, it' will'be. ap arent that some smoke may pass u' into the tubes 7 vand 8' due to the eddg e ect produced thereby, so

that the light om lamp 19 would be deadenedto greater extent than itshould be from passin through only the smoke 'in the v flue. There ore the rings 15- maybe turned to o nthe vents, and a draft will be caused to ow from the exterior air through said I vents 14, through the tubes '7 and 8 respecv 1- tubes it is at no time causedto strike against.

a f flj l ifi a e d by. Saree a -mirror' 27 since, in our present apparatus,

non-essentia l details, without departing from the spirit of the invention andwithin' ofqtwo irelatively short, diametrically opposite, alining' tubes associated with the flue,

' through the other. tub and a translucent j 1,153,603 that the tenden y Jet said" plate to team I coveredwith dust is minimlzed andtha'c curacy of the systemincreased. Insimilar manner, there is no tendency tosmut the j there is" n'oconstant passage of dust-laden air therepast; -We have therefore found thatthe present apparatus remains accurate in itaindications through long periods of time, requiring less attention than--our earlier apparatus and at the same time eliminating the lon connecting tubing with re-r du'ced cost and ess encumbrance to the room J across which the'ray of light passes. taken without further deflection of the Other advantages will become apparent, '6 While wehave herein described and shown an embodiment of our invention, itwill be apparent that changes may be made in the the scope of the appendedclain'is,

Whatweclaimlsz -1 "1. In ancappairatus of the character de.

scribed, the combination, with a smoke flue,

one of said tubes'having assbciated therewithg a source of light and the ether having its I end dlosed by 'a .glass' plate, and alight-defleeting structure comprising a casing,'- a

extending from said casing at such an'angle I Q that a-ray of light passing throughone said tube and deflectedby the mirror-will pass plate carriedby one 0 said tubes, wherebysaid mirror-carrying casing may be placed 1 with/one of itstubes in ali ement with the g plate-carrying tube of the ue, but spaced therefrom any desired distance, for purposes described; '2, An apparatus 015 the character "de-' "scribed, for use with a smoke flue, comprise 3 ing" a plurality of'separated devices, .each whereof provides ashort free ended tube for disposition in alinement with a like tube of another of said devices, a source of light associated-{with the smoke flue for pr jeQt' ing aray oflightacrossjthe flue through'one of said tubes, across the, intervening un-' occupied space between said vtub'e anc' l the alin ing tube of another of sa d dev ces, into 4 said alining tube: a deflecting mirror asso ciated with that devic eiwhich'carries said) alining'tube; and a second short free-ended tube associatedwith said last mentioned de-f vice/for passage therethrough ofsaidideflecte'd ray of hght, 1

-3; Anfap'paratus of the characterdescribed, for use with a smoke flue, comprising aplurality of; separated deY1Q(/S, 6B.Cli whereof provides a s'hortfree-ended tube for disposition in alinement with a like tubeoffl another of said devices, asourc'eof li' ht 'associated'withthe smokeflue ,for pro ectingc,

IIIIII'I'OI 1n said casing, short free-ended tubes with t tube;

space between said tubes and the, alining tube of the other said device, and into said.

aLinin1 tube; a deflecting mirror associated at device which carries said alining and a second short free-ended;tube associated with said last-mentioned device, for passage therethrough of said deflected 10 ray of light, and a plate in one of the tubes 1 of said mirror carrying' device toprevent currents of air therethrough for purposes described.

In testimony whereof wejhe reu nto s et onrh hands. .v

i' THOMAS W. MONEILL. J

IRA J. BABOOCK-. Y In the presence 015- I =1 MARY FL.A. I. LEN,. W. LINN ALLEN.