US609558A - Lantern - Google Patents

Description

No. 609,558. I Patented Aug. 23, I898.

E. M. RDSENBLUTH.

L A N T E R N (Application filed Sept. 24, 1898.)

2 Sheets-Sheet I.

(N0 Model.)

WITNESSES:

9%09- dofi Patented Aug. 23, I898.

E. M. ROSENBLUTH.

L A N T E R N (Applibation filed Sept. 24, 1896.)

2 Sheets-Sheet 2.

(No Model INVENLOR: 4m aldf WITNESSES:

2&4

* llnrrnn STATES" it PATENT Urrrcn.

EDWIN M. ROSENBLUTI-I, OF PHILADELPHIA, PENNSYLVANIA.

LANTERN.

SPECIFICATION forming part of Letters Patent No. 609,558, dated August 23, 1898. Application filed September 24,1896. $erial ITO. 606,837. (No model.) Patented in England May 8, 1897, ITO-11,526.

To all whom it 71mg concern: 1

Beitknown that I, EDWIN M. ROSENBLUTH, a citizen of the United States,'residing in the city and county of Philadelphia, inthe State of Pennsylvania, have invented certain new and useful Improvements in Lanterns, (for which I have obtained a patent in GreatBrit ain, dated May 8, 1897, No. 11,526,) of which the following is a specification.

My invention relates generally to lanterns for vehicles, but especially to such lanterns as are used in connection with bicycles.

It is the object of my invention to provide a lantern of a neat and compact appearance, light in weight, and simple and inexpensive in construction,-and to equip such lantern with improved means for supplying air to the combustion CllLll1b61,--Wlth a novel and convenient means for controlling the wick raising shaft against undue rotation,-with a lamp which shall be easy of removal from the lantern for the purpose of being oleanedor filled,-and, finally, with a novel and desirable form of lantern-supporting attachment.

These objects I attain by resortto the construction hereinafter fully set forth.

In the accompanying drawings,

Figure 1 is a view in side elevation of my improved lamp. 4

Figure 2 is atransverse vertical central sectional elevation of the same.

Figure 3 is a front elevational view of the reflector, removed from the lantern casing.

Figure at is a transverse vertical section of the lamp holding-clamp.

Figure 5 is a view in rear elevation of my improved lantern, showing the supporting clamp as in place therein.

Figure 6 is a top plan view of myimproved lantern-supporting clamp.

Figure 7 is an under plan View of the burner and the air distributing or draft plate.

Figure 8 is a top plan view of the lamp, showing the lamp holding clamp as in place upon it.

Figure 9 is a top plan View of the chimney, the cover plate being supposed removed.

Figure 10 is an under plan view of the cover plate of the chimney.

Figure 11 is a vertical section of the upper portion of the lamp body.

Figure 12 is a transverse section through the wick tube.

Similar letters of reference indicate corres'ponding parts.

In the accompanying drawings,

The lantern structure is shown as composed of a combustion chamber A, a lamp chamber B, and a chimney C.

The combustion chamber is provided with a door a, composite of an annular metal frame supporting a lens, and being connected at one side by a suitable hinge to the body of the lantern, and adapted tobe secured in closed position by a latch of usual construction which is mounted on the body of the lantern and engages the opposite side or edge of said door.

The side walls of the combustion chamber, and also its rear wall,'are formed with the usual small openings in which are secured in any preferred and "usual manner, colored lenses or jewels.

The body of the chimney O, is an upwardly extending, outwardlyfiaring, tubular struc ture, the lower end of which is seated in and secured to the lip'of a circular opening in the top of the combustion chamber, and the upper end of which is formed with a vertical walled circumferential rim 0".

cv are a series of small openings formed in the flaring portion of the chimney, and c are similar openings, formed in the straight rim referred to.

O is an im perforate cap provided with a depending curved flange, 0 adapted to seat itself upon the straight rim C of the chimney,

and to be secured thereon by a stud 0 carried by said rim,said chimney coverO being provided with a corresponding slot 0 to take over said stud.

Rotation of the cover, after in its application to the chimney its slot passes over the stud,-carries the curved flange Cf over said stud,-the cover being thus secured to the chimney by a bayonet joint connection.

D is a reflector removably mounted in the combustionchamber. This reflector is conveniently formed of diametrical proportions corresponding to the transverse diameter of the combustion chamber, and provided with a rearwardly extending circumferential flange d which flange, making contact with the interior face of the combustion chamber, supports said reflector in proper position ,between the wick tube and the rear wall of the combustion chamber.

61 is an opening in the central portion of the reflector, in line with the light or lens in the rear wall of the, combustion chamber.

a are a series of air openings, disposed in a circular series, in the rear wall of the combustion chamber, and d are a series of openings, disposed in a circular series, formed in the body of the reflector.

As will be understood, air passes or filters from the exterior of the lantern through the openings (1. to the space between the rear plate or wall of the lantern and the reflector,

, and thence from said space, through the central opening d, and the circular series of openings d in the reflector, into the combustion chamber.

As will be understood, by simply opening the door a of the combustion chamber, a finger may be inserted in the central openingd of the reflector, and the latter be thereupon drawn out, the lamp of course being first removed. The reflector may therefore be very readily cleaned and polished when desired.

The lamp chamber, designated B, is shown as consisting of a depending tubular body, the upper edge of which is secured in any preferred manner to the lower portion of the body of the combustion chamber, and which lamp chamber is of three diameters, successively larger from its top to its bottom, forming the chamber into a body I), a neck 12 and a throat b ,--a shoulder b existing between the body and neck, and a shoulder b existing between the neck and throat.

E is a wick-opening formed in the floor of the combustion chamber, and within the area bounded by the upper edge of the lamp chamber.

I is a lamp retaining and oil collecting clamp, the same being a saucer shaped cap, consisting of a base f, having a circumferential upwardly turned wall f provided with aninturned flange f, embodyingopeningsf f is a fiat band spring secured to the floor of the lamp retaining clamp, the respective ends of said spring being free and normally extending up from the floor of the clamp.

f are studs or stops formed on the inner side walls of the lamp retaining clamp, said studs being conveniently formed by turning down portions of the flange f at the points where the openings f 2 in-said flange occur.

I is a stud mounted upon the lower portion of the lamp chamber and shown in dotted lines in Figures t and 8.

H are a series of sub-dividing air openings formed in the side wall of the lamp chamber, just below the shoulder 12 of said chamber,

said sub-dividing air openings being shown' as four in number, and formed as long slots extending circumferentially of the chamber, so as to divide the lantern into two parts in order that the heat may not be conducted to the oil chamber. I

J is the lamp proper, the same being shown as formed with a body of substantially the same diameter as the interior diameter of the body of the lamp chamber, and provided with an open topped neckj of less diameter.

The neck j of the lamp is of slightly less diameter than the neck 19 of the lamp casing, so that when the lamp is in position in the lamp casing, air entering through the subdividing air openings H may pass up through the annular space between the neck of the lamp and the neck of the lamp casing.

K is the burner of the lamp, the same comprising a body the lower portion of which fits and engages with the threaded interior of the neck of the lamp,with a wick tube 7r,and with a wick raising shaft The wick raising shaft 70 is, however, in such position with relation to the lower and threaded portion of the burner K, that when said burner is screwed home within the neck of the lamp, the wick raising shaft is directly carried against the upper edge of the lamp neck and by the frictional contact of the neck of said lamp with said shaft said shaft is held against undue rotation.

L is what -I term a draft plate, the same being an annular plate carried by and preferably as a part of the burner K, and the outer edge of which makes contact with the neck I) of the lamp chamber, just below the shoulder b the draft plate is provided with openings or perforations,-which may be arranged in any desired manner,-and through which air may pass in small jets or streams.

I prefer to provide said draft plate with a series of small openings Z, formed in its body, and to form in the outer margin of the plate a series of serrations Z, the indentations between which serrations form, when the edge of the draft plate is in contact with the wall of the chamber, a second series of perforations.

The diameter of the opening E is less than the diameter of the circular series of openings in the draft plate, with the result that air passing up through the perforations in the perforations in the draft plate, and into the second chamber, so to speak, formed between the draft plate and the bottom wall of the combustion chamber, and then passes from the said second chamber through the wick tube opening, up into the combustion ings H, are very thoroughly broken up and distributed in passage through the successive chambers, and openings, and such currents are therefore prevented from striking and extinguishing the light.

The arrangement described, while preventing the direct contact of strong entering currents of air with the flame, nevertheless, provide an abundant supply of air in small numerous and easily flowing streams, the required amount of air being insured by the provision of openings in sufficient number and of sufficient size.

N, Figure 1, is an opening formed in the neck b and shoulder 6 through which the wick shaft and its head pass.

The lamp J with its detachable burner, is removable from the lamp chamber, through the open bottom of the latter, and, to remove the lamp, the lamp holding clamp F is first detached from the lamp chamber and the lamp is thereupon drawn downward from the chamber until its wick tube clears the bottom of the latter, the wick shaft, in its descent, as well as in its subsequent ascent, in

, the replacing of the lamp, passing through the opening N.

The wick tube It, as shown in Figures 2, 8 and 12 of the drawings, is of usual construction as to its lower portion, but is, at its upper end, slightly flared outwardly asto its side portions, so that the mouth of said wick tube is, in plan, of oval outline.

As a result of this construction, the flame when the lamp is in operation, acts upon the central portion of the wick at a point slightly below the level of the upper end of the wick tube, with the result that the burning away of the edges of the wick, leaving a central portion unconsumed, as in the case of Wicks used in connection with tubes of ordinary construction,is obviated.

The advantages of this construction are that there is less danger of oil from the wick oozing or crawling over the edge of the wick tube, and down the outside of the lamp; further that the burning end of the wick being as to its central portion slightly below the level of the tube, it is thus protected to some extent from jets of air which might cause it to flicker; further the wick burns more uniformly, and hence requires less trimming or snufling; and, finally, the side walls of the tube diverging from the wick exposes a considerable portion of the central part of the wick to the action of the flame, so that the flame covers and adheres to such extended area of the wick with the result that the possibility of its being blown out is diminished.

The lamp holding clamp, which is shown in place upon the bottom of thelamp chamber,

in Figures 1, 2, and 5, is removed by rotating said lamp to the left, until the stud 1, comes opposite to the opening f whereupon the said clamp may be taken oif the lamp chamber, the springf operating to throw or force it downwardly, thus facilitating its removal.

The removal of the lamp holding clamp exposes the lower end of the lamp, which projects below the edge of the lamp chamber, and the said projecting end of the lamp may be seized and the lamp drawn downward through the lamp chamber.

As the lamp very snugly fits within the lamp chamber, and is self-supporting therein, it may be necessary to apply slight downward pressure to the wick raising shaft, to impart to the lamp an initial impulse of descent.

In restoring the lamp to position, it is lifted into the position shown in Figure 2, the tight ness of the tit of its body within the lamp chamber rendering it normally self sustain ing in position.

The lamp retaining clamp is fitted upon the lower end of the lamp chamber, and forced upward, the slot f passing the stud I, and the clamp is thereupon rotated until the stop or stud f makes contact with the stud I.

The spring f takes up any looseness in the fit of the several members and prevents any working loose of the lamp retaining clamp.

The upper end of the opening N is of such proportions, and so located that when the lamp is forced upward into final position, the shaft is, encounters the edge of the topof said opening and by its contact with the said edge is held against unduerotation.

As will be understood, the shaft is thus held against rotation, not only by the edge of the opening N, but also by the edge .of the neck j of the lamp J.

As will be understood, when the lamp is removed from the lamp chamber, it carries its detachable burner with its integral draft plate with it, and the perforations in said draft plate, which are accessible from all sides, may be very readily cleaned out when necessary, thus insuring the uniform combustion;

P is a band encircling the throat 17 of the lamp chamber, and provided with a split bearing ring P, provided with an apertured lug P and an apertured and tapped lug P Q is a screw extending through the aperture of the lug P and within the tapped aperture of the lug P by the rotation of which screw in one or the other direction the bearing proper, is enlarged or diminished in diameter.

S, Figure 6, is a cylindrical shank, of size adapting it to be entered in the bearing ring P, said shank being provided with a hooked extremity, s.

S is a shorter shank, the inner end of which is hingedly engaged with the body of the shank S, and the outer end of which terminates in a hook 8 similar to the hook of the shank S.

The shank S is conveniently hingedly engaged with the body of the shank S by having its inner curved end entered loosely in an opening in the body of the shank S.

The hooks of the shanks are counterparts and of such form as to adapt them to engage the edges of one member of the steering fork of the bicycle, or other portion of a vehicle upon which the lantern is mounted.

T is a screw extending through suitable openings formed in both shanks in the vicinity of their hook-provided ends,--and equipped as to its protruding extremity with a wing nut T, by which the opening and closing movement of the shanks is controlled.

As will be understood, this lantern supporting clamp may be mounted upon either of the members of the forked steering bar of a bicycle, or by suitable modification of the form of its hooks, be applied to any part ofthe frame or body of any kind of a vehicle.

Furthermore, as will be apparent, the lantern when mounted upon said cylindrical shank, may, before being secured in its final position by the screwing up of the screw Q, be set at any desired angle, so that the lens of the lantern door will be inclined from a vertical position,-a matter of considerable convenience. This cylindrical shank can be instantly applied to either right or left side of lantern or detached therefrom with great facility.

U, Figure 5, are a series of openings in the throat of a slight trumpet mouth enlargement portion of metal continuous of the neck of the lamp, as shown in Figure 11.

The body of the wall or flange 7' is provided with a series of openings or perforations 7' above the tapped portion, said flange or internal wall being slightly flared or expanded above said cap portion to form, with the burner, a depressed or gutter like recess.

Through the openings 3' air has access to the interior of the lamp and therefore in the operation of said lamp a certain amount of such air will ascend through the wick tube and through the interstices of the wick and thus assist in supporting combustion.

The gutter like form of the recess, and the fact that the openings j are formed near the bottom of said recess, will prevent any oil which may, in the vibration of the lamp, be forced outward through said openings, from escaping over the edge of the lamp neck, any

such oil being confined within the gutter referred to until it returns by gravity through the threaded neck 3' into the oil reservoir.

The lamp retaining clamp F operates to receive and contain any oil which may in the filling of the lamp be left upon its exterior and crawl downward, as well as any oil which may escape from the lamp through overflowing, jarring, or sweating in any manner.

As will be understood, the air which enters through the sub-dividing openings H which extend around the body of the lamp chamber exists for a time in the annular interspace between the neck of the lamp and the neck of the lamp-chamber, and said air, in conjunction with the draft plate L, operates to very thoroughly protect the body of the lamp from the heat of the flame in the combustion chamber.

It will be noticed that in the construction of my improved lantern, after the air enters through the sub-dividing openings l-I, it exists within the first air chamber which is bounded at its upper portion by the draft plate L;that said air from said first chamber passes through the perforations of the air plate into the second air chamber, the upper portion of which is bounded by the bottom of the combustion chamber, and in passing through the draft plate to said second air chamber any direct air currents are very thor oughly sub-divided; that the upwardly ascending currents of air passing through the 1 perforations of the draft plate are again brokenup before they can enter the combustion chamber by reason of the fact that said air in its ascent is dashed against the bottom ter being thus dashed against the bottom of the combustion chamber that it is deflected or carried toward the wick tube and escapes through the opening E up into the combustion chamber.

of the combustion chamber, and it is only af- By the means described the flame is supplied with the proper amount of air on all sides to give perfect combustion and to prevent the flame from smoking up the polished and causing aconsiderable volume of smoke as is the casein the use of vehicle lanterns as heretofore constructed, on the contrary greatly intensify the light andbring the flame to almost a white color, producing a more intense and brilliant light from oils etc. than has been heretofore deemed possible, and, furthermore, the flame adheres to the wick with such tenacity that it is next to impossible to jar it out,-a matter of great advantage in vehicle lanterns.

At the same time, by the access of air between the combustion chamber and oil reservoir, and the sub-division of the lantern by the long slit-s, heating of the oil reservoir is prevented, thereby obviating explosions, and the lamp or oil reservoir, being surrounded by the casing, any oil remaining on the exterior of the lamp and due to sweating or any other cause, is prevented from coming in contact with the hands of the user, thus rendering the lantern clean to handle.

As will be understood, the improved lantern supporting clamp or bracket hereinbefore described enables the lantern to be carried on either side of the bicycle, and also enables the lantern to be adjusted at any desired angle in its plane of rotation upon the cylindrical shank S of said clamp or bracket.

Upon the removal of the cap of the chimney the interior of said chimney is readily accessible to allow of the removal of soot.

Having thus described my invention, I claim-- 1. A vehicle lantern having a combustion chamber, the rear wall of which is provided with a lens or jewel, and with a series of small air openings, in combination with a reflector mounted within said chamber in the vicinity of said rear wall, the said reflector being provided with a flange or rim which makes contact with the wall of the combustion chamber, and supports said reflector removably in position, said reflector embodying a central light opening and a circumferential series of small air openings, substantially as set forth.

2. In a bicycle lamp, in combination with a combustion chamber, alamp chamber formed with a neck and a body, depending from said combustion chamber, and provided with subdividing air openings in its body, a lamp provided with a burner and a wick tube which latter extends through a wick tube opening formed in the bottom of the combustion chamber, and an annular draft plate carried by said burner and having air passages consisting of apertures and marginal serrations, and in contact as to its margin with the neck of the lamp chamber,-substantially as set forth.

3. In a lantern,in combination with an open bottomed lamp chamber, provided upon its lower exterior portion with a stud or projec tion,-'an oil collecting lamp retaining clamp consisting of a plate having a rim adapted to inclose the lower portion of said lamp cham ber,which rim embodies a slot adapted to take over said stud or projection, and a flat spring secured to the said plate,substantially as set forth.

4. In a bicycle lamp, in combination with a combustion chamber,alamp chamber depending from said combustion chamber, a wick tube opening which places said chambers in communication, a lamp mounted in said lamp chamber and having a wick tube extending through said wick tube opening, an annular space between the upper'portion of the lamp and the lamp chamber, sub-dividing air openings formed in said lamp chamber and opening into said annular space, a draft plate embodying a circular series of perforations and serrations, said draft plate being disposed between the sub-dividing air openings and the wick tube opening and said circular se, ries of openings being of greater diameter than the wick tube opening,-substantially as set forth.

5. In combination, a lantern-supporting bracket consisting of a cylindrical hook-provided main shank and a hook-provided auxiliary shank having its end entered through an opening in said main shank, a screw which controls the approach of said shanks, a lantern having a horizontally disposed bearing or socket of circular section adapted to be seated upon said cylindrical shank,and means for adjustingthe diameter of said bearing or socket, substantially as set forth.

In testimony'that I claim the foregoing as my invention I have hereunto signed my name this 16th day of September, A. D. 1896.

EDWIN M. ROSENBLUTH.

In presence of- F. NORMAN DIXON, Tnos. K. LANCASTER.

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