US1822910A - Railway lantern - Google Patents

Description

Sept. 15, 1931. w. J. SPENCE RAILWAY LANTERN Filed Nov. 8, 1929 Patented Sept. 15, 1%31 WILLIAM JOHN SPENCER, OF HAMZLTS'N, ONTARIO, CANADA, ASSIGNOR TO GENERAL STEEL WARES LIMITED, 01 TGROHTO, ONTARIO, CANADA HAILVJAY LANTERN Application filed November 8, 1929, Serial No. 405,686, and in Canada October 14, 1929.

This invention relates to lanterns of the type used by railway trainmen, and the b j ect of the invention is to provide a reliable kerosene burning lantern which will burn a under all the conditions to which such lanterns are subject, in heavy winds, rain and snow, close to locomotive whistles, and in the upright and inverted positions which are necessary in signalling. to The object is achieved by constructing a lantern of usual construction having a base, oil well, globe, globe holder or inner dome, an outer dome, breast, cage and bail, and providing vent holes in the base, in the outer f6 dome and the globe holder adjacent the top of the globe. The oil well acts as a baffle for the vent holes in the base, the upper rim of the globe as a battle for the vent holes in the lower part of the globe holder, and a baffle 90 secured to the top of the globe holdershields the vents in the outer dome. In addition a horizontal slit is formed in the globe holder intermediate its ends, and an imperforate upwardlv inclined annular baffle is secured to 95 the globe holder below the slit. Aperforate upwardly inclined annular baflie is secured to the globe holder above the slit, the 1nner ends of the two latter baffles converging and being joined together. so The invention is hereinafter more specifically described and illustrated in the accompanying drawings in which Fig. 1 is a vertical section; and

2 is a horizontal section on the line 2*2 in Fig. 1.

In the drawings corresponding numbers of the different figures refer to corresponding parts.

The lantern comprises a base 1 111 which is '40 set the oil well 2 to 'which is attached the burner 3. The globe at rests on the base 1 in a known manner. The globe is of standard size and shape such as is generally used in lanterns of this type.

The top of the globe is supported and held in position by the globe holder or inner dome which is slidably mounted in the outer demo 6.- A spring 7 is secured to the top of the globe holder, and is compressed against 50 the top of the outer dome 6 and tends to re tain the globe holder 5 in contact with the globe 4. Strips 8 extend around the inside of the lower part of the outer dome 6, and have gaps therein as indicated at 9 through which lugs or pins 10 011 the globe holder may be forced against the compression of the spring 7, and the globe holder by a twisting movement positioned so as to be retained in the dome, the strips 8 and pins 10 thus forming a sort of bayonet oint. 60

Extending outwardly from the base of the dome is the breast 11 which is hinged at one side to the cage 12 by hinge means 13, and is secured to the other side by a catch 14. A

handle or bail 15 is connected to the cage 12. 05

The cage is soldered to the base at 16.

The general construction of the base is well known. A series of perforations 17 are fori'ned in the outside lower part thereof and admit air to the space between the oil well 2 and the outer wall of the base. A rim 18 is secured to the top of the base, and is provided with perforations 19 therein adjacent the top of the oil well 2, thus, providing connection between the interior of the globe and the space between the walls of the base 1 and the oil well 2. The rim 20 of the oil well 2 extends upwardly from the top thereof beyond the lower edge of the perforations 19, thus serving to deflect air passing through said perforations away from the burner 3.

The lower extremity of the globe holder or inner dome 5 extends some distance below the top of the globe 4L, leaving a space therebetween. Perforations 21 are formed about 85 the lower edge of the globe holder and below the uper edge of the globe 4, thus constituting the upper portion of the globe a baflie for shielding the burner from the direct inrush of air through the perforations 21 and also serving to intercept and force out through the perforations 21 any abnormal drafts coming down from the top of the lantern.

The globe holder or inner dome 5 is annular in form and extends upwardly in a convex curve for approximately half its height, forming a dome shaped roof 5 for the combustion chamber of the lantern. At the top of the curved portion 5 of the globe holder 0 is a portion 5 having perpendicular sides mo upwardly inclined annular baffle 22.

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which are adapted to slide within the outer dome 6, and to which the pins or lugs 10 already mentioned are attached. To the top of the perpendicular section 5 is secured an servesto break and intercept drafts coming through the perforations 23 in the top of the outer dome 6, and is located immediately below said perforations. Air intercepted'by the baiiie'22 may pass out between the outer dome 6 and the perpendicular portion 5 of the globe holder 5.

At the junction of the curved portion 5 and the perpendicular portion 5 of the globe holder orinner dome 5 is a narrow horizontal slit 5 extending all the way around the globe holder. Secured to the uper edge of the curved portion 5 ofthe globe holder immediately below the slit 5 is an upwardly inclined annular baflie 24. This battle is likewise convexly curved, and forms a continuation of the dome shaped roof of the combustion chamber. 'Secured to the sides of the perpendicular portion 5 of the globeholder immediately above the slit 5 is another upwardly inclined annularbaflle 25. The baffie 25 is provided with two rows of perforations 26, and the inner edges of the two baffles 24 and 25 converge, and are joined together.

Immediately below the baffle 24: and extending from side to side of the globe holder adjacent-the top of the curved portion 5 are a pair of straight baffle plates 27 which are parallel in a longitudinal direction, but which converge in a perpendicular direction, the distance between the lower edges of each bal'lle being greater than the distance between the-upper edges.

In operation this lantern has been shown by test to withstand the most unfavourable conditions. lVhen in an upright position, ample ventilation is provided by the perforations 1.7 and 19 in the'base of the rim 20 and the oil well 2 deflects the in-coming air away fromthe burner'3 sufliciently to prevent it from being disturbed or blown out. Gusts of air passing through the perforations 23 in'the outer'dome, either by wind or rapid motion of the. air, or when the lantern is inverted are, as already mentioned, diverted by thebafiie 22 which however permits the burnt gases and foul air from the burner to pass freely upward therethrough on ordinary occasions. Any excess air currents whichpass down through the perpendicular portion of the globe holder, which may be termed the chimney. maybe in tercepted by the balfles 24 and 25, andcaused to pass out through the slit 5 to the atmosphere. This slit also provides extra'ventilation when required, the baffle 25 tending to prevent too much air from either passing in or out of the slit 5'. The baflies 27are coni- Q monly found in lanterns-of this type, and

435 serve .to direct vthe in-coming air currents This and has no obstructions thereon. In-coming air fromthe toptends to flow around the walls of the combustion chamber and to pass down about the sides of the globe. keeping the globe cool, and keeping out of contact 'withthe burner 3. 'Thep'ositionin'g of the bafi'ies 24 and 25 above the combustion chamber means that in-coming air from the to is deflected and directed outside of the lantern dome before thedraft reaches the combustion chamber, thus providing better ventilation and better protection for the light. In other known constructions baffles are provided within the lanternwhic'h merely deflect the drafts but do not dispose of-them.

Although the .form above described lSEPI'G- ferred it should be understood that similar results may be obtained with the entire omission of the,perfora'te baiile25, or by the provision .in the baffle 25 of some form of vent other than the perforations described. It

mayalso be possible to substitute a series of perforations orsome other'kind of opening for the slit 5, and-itlis not desired that the inventionin itsbroad sense should be'limited .to .the specific details of construction described in the specificationand. shown in the drawings. I

'WhatII claim as my invention. is:

. 1.. In a lantern, a basehaving vent-holes therein; a globe; an annular globe holder or inner dome having vent 'holes about its lower extremity, said globe extending upwardly within thezholderito form an annular baflieadjacent the said .vent holes; an outer dome .in which Lthe .globe holder fits, said outer domeLhaving vent holes adjacent the top thereof; an upwardlyandinwardlyinclined annular baffleat .the top of the inner dome immediately belowzthe vent holes in the outer dome; a slit in the sides of the inner dome extendingaround the said inner domenear the middle thereof, and below the lower extremity of the outer dome; .an upwardly inclined annular baflieiextending intotheinterior of the inner dome from the inside wall thereof immediately below said slit; and a perforated upwardly .inclinedannular bafiie extending into the interior .of the inner dome from the inside Wall thereof immediately above theslit the inner edges of said latter baffles converging and being joined together.

2. In a lantern a burnerya base having vent holes therein; an oil reservoir in said basehaving an annularrimextending above the lower edge of said vent holes to deflect air from the burner; a globe; an annular globe holder or inner dome having vent holes about its lower extremity, said globe extending upwardly within the holder to form an annular baffle adjacent the said vent holes; an outer dome in which the globe holder fits, said outer dome having vent holes adjacent the top thereof; an upwardly and in wardly inclined annular baflle at the top of the inner dome immediately below the vent holes in the outer dome; a slit in the sides of the inner dome extending around the said inner dome near the middle thereof, and below the lower extremity of the outer dome; an upwardly inclined annular baiile extending into the interior of the inner dome from the inside wall thereof immediately below said slit; and a perforated upwardly inclined annular baffle extending into the interior of the inner dome from the inside wall thereof immediately above the slit, the inner edges of said latter bafiles converging and being joined together.

A lantern, having a combustion chamber having a dome-shaped roof; a chimney extending upwardly from the roof of the combust-ion chamber; a slit in the walls of the combustion chamber at the junction thereof with the chimney; an inclined curved annular baflle extending upwardly and inwardly from the inside wall of the combustion chamber immediately below the slit and comprising a continuation of the dome-shaped roof; and a perforate baffle extending inwardly from the inside wall of the chimney immediately above the slit, the ends of the two latter baffles converging and being joined together.

4. In a lantern, an outer dome; ventholes in the dome; an annular globe holder or inner dome having its upper part within the outer dome, and having a horizontal opening in its sides below the dome; an annular baffle extending inwardly from the inside Wall of the inner dome immediately below said opening; and another annular baflle extending into the interior of the inner dome from the inside wall thereof immediately above the opening, the outer edge of each baffle being in substantially air tight contact with the globe holder.

5. In a lantern, an outer dome; a breast; vent holes in the outer dome; an annular globe holder or inner dome having its upper part within the outer dome, and having a horizontal opening in its sides below the outer dome and above the lower extremityof the breast; an annular baffle extending inwardly from the inside wall of the inner dome immediately below said opening; and another annular baflle extending inwardly from the inside wall of the inner dome immediately above the opening, the outer edge of each bafile being in substantially air tight contact with the globe holder.

6. In a lantern, a globe; a dome having a horizontal opening in its sides above the globe; an annular imperforate baffle extending into the interior of the dome from the inside Wall thereof immediately below said opening; and another annular baffle extending into the interior of the dome from the inside wall thereof immediately above said opening, the outer edge of each baffle being in substantially air tight contact with the inner wall of the dome.

7 In a lantern, a globe; a dome having a horizontal opening in its sides above the globe; an upwardly inclined annular im perforate baffle extending into the interior of the dome from the inside wall thereof immediately below said opening; and another annular baffle extending into the interior of the dome from the inside wall thereof immediately above said opening, the outer edge of each baffle being in substantially air tight contact with the inner wall of the dome.

8. In a lantern, a globe; a dome having a horizontal opening in its sides above the globe; an upwardly inclined annular imperforate baffle extending into the interior of the dome from the inside wall thereof immediatelybelow said opening; and another annular bafi le extending into the interior of the dome from the inside wall thereof immediately above said opening, said baflie having vent means therein, the inner edges of said baflle converging and being joined together and the outer edge of each baflie being in substantially air tight contact with the inner wall of the dome.

9. In a lantern, a globe; a dome having a horizontal opening in its sides above the globe; an upwardly inclined annular iniperforate baffle extending into the interior of the dome from the inside wall thereof immediately below said opening; and a perforate annular baffle extending into the interior of the dome from the inside wall thereof immediately above said opening, the inner edges of said baflies converging and being joined together and the outer edge of each baffle being in substantially air tight contact with the inner wall of the dome.

10. In a lantern, a base; vent holes in the base; a globe; a dome having a horizontal opening in its sides above the globe; an annular imperforate baffle extending into the interior of the dome from the inside wall thereof immediately below said opening; and another annular baflie extending into the interior of the dome from the inside wall thereof immediately above said opening, the outer edge of each baffle being in substantially air tight contact with the inner wall of the dome.

11. In a lantern, a globe; an outer dome; vent holes in the outer-dome; an annular globe holder or inner dome within the outer dome having a horizontal opening in its sides above the globe; an annular imperforate bafile extending into the interior of the inner dome from the inside wall thereof immediately below said opening; and another annular baiile extending into the interior of the inner dome from the inside wall thereof immediately above said openingflhe outer edge of each balile being in substantially air tight contact with the inner wall of the dome 12. In a lantern, a globe; an outerdome; vent holes in the outer dome; an annular globe holder or inner dome within the outer dome having a horizontal opening in its Fines above the globe; an annular iniperforate baflle extending into the interior of the inner dome from the inside wall thereof immediately below said opening; another annular baflle extending into the interior ofthe inner dome from the inside wall. thereof mmediately above said opening, the outer edge of each baffle being in substantially air tight contact with the inner wall of the dome; and a third inwardly extending annular batlle at the top of the inner dome immediately below the vent holes in the outer dome.

13. In a lantern, a globe; an annular globe holder or inner dome having a horizontal opening in its sides above the globe, and vent holes in its lower extremity adjacent the top of the globe; an annular baille adjacent the vent holes; an annular imperforat-e bafile extending into the interior of the dome from the inside wall thereof immediately below the horizontal opening in the sides thereof; and another annular baflie extending into the interior of the inner dome from the inside wall thereof immediately above said opening, the outer edge of each baffle being in substantially air tight contact with the inner wall of the dome.

14. In a lantern, a base having vent holes therein; a globe; an annular globe holder or inner dome having vent holes about its lower extremity; an annular baflle adjacent said vent holes; an outer dome into which the inner dome fits, said outer dome having vent holes adjacent the top thereof above the top of the inner dome; an opening in the side of the globe holder intermediate its ends; an inclined annular imperforatebafile extending into the interior of the inner dome from the inside wall thereof immediately below the horizontal opening in the sides thereof; and another annular baflle extending into the interior of the inner dome from the inside wall thereof immediately above the said horizontal opening, the outer edge of each annular baffle bein in substantially air tight contact with the inner wall of the dome.

15. In a lantern, a base having vent holes therein; a globe; an annular globe holder or inner dome having vent holes about its lower extremity; an annular baifie adjacent said vent holes; an outer dome into which the inner dome fits, said outer dome having vent holes adjacent the top thereof, above the top of the inner dome; an opening in the side of the globe holder intermediate its ends; an interior of the inner dome from the inside wall thereof immediately above the said horizontal opening, the upper of the two last mentioned baflles having vent means therein, and

the inner edges of the upper and lower bafile converging and being joined together and the outer edge of each annular ballle being in substantially air tight contact with the inner wall of the dome.

Signed at Hamilton, Canada, this 29th day o of October, 1929.

WVILLIAM JOHN SPENCE.

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