US1662333A - Safety lamp - Google Patents

Description

March 13, 1928.

E. J. QUlNN ET AL SAFETY LAMP 2 Shea ts-Sheet 1 Oririinal Filed May 13. 1926 Attorney March 13, 1928.

E. J. QUINN ET AL SAFETY LAMP Original Filed May 13. 1926 2 Sheets-Sheet 2 Inventor; 6

Attorney Patented Mar. 13, 1928.

SPRAKE, AND 'HUBERT JI GBITMAN, OF KINGSTON,

PENNSYLVANIA.

EDWARD J. QUINN, CHARLES E.

SAFETY LAMP.

Application'filed'May 13, 1926, SerialNo. 108,859. Renewed October 11, 1927;

The present invent-ion relates to a safety lamp'particularly adapted for use'by miners and *has "for its principal object to provide an acetylene lamp utilizing a reflector for housing the flame thereof, andhavingmeans whereby ifthe lamp is brought'into'an area containing gas, the flame will be automati-' cally put" out.

'Another very important object ofthe 111- vention resides in'the provision of an 'improved jet .casingfor an acetylene lamp which "embodies gauze covered openings which will allow gas to pass therethrough into the lamp to'be ignited so asto cause a slight explosion within the casing that will put out the "flame but will not allow the fiame to pass outofthe casing to ignite the gases in the mines. I I

Another very important object of the in vention lies in the provisionof an improved jet casing for an acetylenelamp wherein the parts are compactly and convenlently arranged to obtain the maximum efficiency in the minimum amountof space, and-to afford convenience in the'care of the lamp.

Another importantobject of the inventlon lies inthe'provision of a GlOSlllBfOftllGj'Bt casing which includes a glass panelhaving openings'coveredbygauze'and also in the provision of a snap fastener which isadapted to beclosed by'a dropof'solder so'that after the lamp is lifted it will 'be'necesary to destroy the drop :of solder in order to obtain'access to the interior thereof.

Another very important object of the invention lies in the provision of a jet cleaner which maybe operated from the exterior of the lamp'having means contained 'within itselffor allowing itto bebrought intoproper registry with the bore of the jets.

A "still further very important object of the invention is'togenerally lmprove upon,

safetylamps of this nature by providing an exceedingly simple structure, one which may bemanufacturedat a low costyand yetbe strong and durable, one which is not likely to easily get out of order, and otherwise well adapted to the'purpose for which it is designed.

Withthe above and numerous other objects in view'as will appear as the description proceeds, the invention resides incer tain novel features of construction, and in thecombination'and arrangement of parts holding the-reflector casing in place.

as will be hereinafter more fully described and claimed.

Inthe drawing r Figure '1 is a sectional viewofj the lamp en'ibodyingthe features of my invention,

Fig. 2 is a frontelevation thereof, 7

Fig.8 is a vertical section taken through the reflector casing substantiallyontlie line 3-3*of Fig. l,

Fig.4 is a perspective'view of the guide tube-ofthejet cleaner, and f V Fig. '5 is a perspective View ofthe jet cleaner per se. 7

Referring to the drawing in detail, it will be seen that the numeral or designates" enerally a well known type of minersacety ene gas la1np,on'wl11ch 1smounted my improve'd reflector casing indicated generally by the,

letter C. This reflector casing C may be held in place by allowing a jet J-toproject through an opening 6 in the concavoconvex'rear wall 7 ofthe *casing (land the utilizing of a packing nut8 for securely jetJ is substantially L-shaiped information and the=shorter-outer 'end'or arm 9 thereof extendsvertically and terminates in -ealinement with the axis of the casing C.

This i The'body of the casing Gis of a substantial frusto-conical formation, and indicated by thenumeral -10. An-opening l'lis provid'ed in the upper portion-"of thebody '10 and receives an inverted cup-shapec1 bonnet 12 of gauze, with which is idisposeda cage including'a top disk 13 and a pluralityof posts 1-l rising from the body 10 and arrangedin an annular seriesabout the bonnet 12. This cage protects the gauze bonnet from knocks and-the like so as to prevent injury thereof. The bottom .of the body 10 is provided withan opening 15 coveredby gauze 16.

Anyannular closure frame-17 is hinged-to the bottom of thebody 10 asQat 18 andat its upper end is provided with a spring catch or clip 19 a'dapted to engage over the annular bead 20 at the front end of the body 10. When the lamp is lit and the frame 17 is closed, a drop of solder "21fwill A glass panel 23 is disposed in the annular frame 17 and may have openings z-l, and 26 covered respectively by gauze strips 27, 2S and 29. The panel may be constructed 01 all glass or all gauze. it will be apparent from the description as it has thus far progressed, that if the lamp is lit and comes into a gas area, said will pass through the various gauze portions of the casing C as described in detail above. The gas which passes through the gauze into the casing will cause such an explosion as will put out the jet, but the gauze will prevent the escape of the llame outol the casing so that the gas in the mine will not be ignlted.

A journal sleeve 30 is mounted through the rear wall 7 of the casing 0 above the axis of the casing and extends downwardly and forwardly at an acute angle to said axis and is held in place by a nut ill and a flange 32 or in any other suitable manner. A bracket 33 is formed on the inner end of the journal sleeve 30 and extends upwardly therefrom and has a forwardly disposed extension 34 in which is threadedly mounted a flint supporting member A. shalt is journaled in the bearings 50 and has its inner end a corrugated steel wheel for rubbing against the flint in the holder while at its outer end, it is provided with operating wheel 38.

The inner end of this lighting apparatus just described, is disposed above and slightly to the rear of the axis of the bore of the jet 9 so that by turning the wheel 38, the gas escaping from the jet may be readily lighted. This location of the steel and flint lighting apparatus allows for a compact and convenient arrangement and prevents the same from becoming overheated by the flame of the burner.

A guide tube projects through the bottom portion of the body 10 and extends at a chord to the circumference of said body and so as to be in spaced parallelism with the vertical diameter thereof, as is clearly indicated in Fig. 3, and therefore extends in parallelism with the extremity 9 of the jet J. The inner end of this tubular guide 40 is cut away so as to provide a notch ll having a longitudinally depending portion e2. A shank 43 is rotatably and slidably mounted in the bore of the tubular guide 40 and at its lower end is provided with an operating knob 44. At the upper end of the shank 43, there is provided an angular-1y extending arm terminating in a depending pin 46 in spaced PHItIllOllSITl with the shank 43. The notch 41 allows for limited swinging movement of the arm 45, one edge thereof in continuation of the edge of the extension 42 functioning as at stop so that when the arm 45 is against said stop, the finger 46 is alined with the bore of the portion 9 of the jet J, and thus the shank 43 may be pulled downwardly and the arm 45 will pass into the extension 42 and the linger it) into the portion 9 oi the jet J.

It is to be noted that while the arm 45 is in the extension i2, said arm prevents any rotary motion being imparted to the shank it and therefore prevents the breaking oil of the linger do in the bore of the jet. 'lhus this jet cleaning device is thoroughly loolproot and may be operated casily and quickly without any particular care on the part or the operator. The particular location oi? the jet cleaning contrivance enhances the compactness oi the arrangement and ail'ords the maximum convenience.

it is thought that the construction, utility, and advantages of this safety lamp with its improvements, will be readily understood by those skilled in this art without a more detailed description thereol. My novel contribution to the art lies in the idea of combination, involved, producing the superior compactness and convenience so desirable in a device of this nature, without sacrificing the eliiciency oi the lamp in any my. The present embodiment ot the invention, however, has been disclosed merely by way of example, since in actual practice, it attains the features of advantage enumerated as desirable in the statement of the invention as the above description.

Numerous changes in the details of construction, and in the combination and arrangei'nent of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed, or sacrificing any of its advantages.

Having thus described our invention, what we claim as new is 1. In a miners safety lamp of the class described, an L-shaped jet including a horizontal portion and a vertical portion rising therefrom, a reflector casing including a rear concavoconvex wall having a pair of openings one above and one below the axis thereof, the horizontal portion of the jet being mounted in the lower opening, the in nor terminal of said jet being alined with the axis of the casing, a bearing mounted in the upper opening, a bracket on the inner end of said bearing projecting upwardly and provided with a forward extension, a llint holder in said forward extension, a shaft journaled in said bearing, a corrugated steel wheel on the inner end of said shaft for cooperating with the flint holder, and an operating wheel on the outer end of said shaft.

2. In combination, a reflector easing, a jet in said reflector casing having a vertically disposed terminal, a tubular guide sleeve projecting vertically thru the bottom of the casing in spaced parallelism with the vertical portion of the jet and terminating at its inner end in a notch and an extension,

ill.)

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mon wall, at which time the finger will be alined with the bore of the vertical portion 10 of the jet, so that the shank maybe moved downwardly for moving the finger down into the bore.

In testimony whereof we afiix our signatures.

EDWARD J. QUINN. CHARLES E. SPRAKE. -HUBERT J GRITMAN.

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