US179589A - Improvement in lamps - Google Patents

Description

2 Sheets-Sheet M. McNAMEE.

LAMPS.

Patented July 41,. 187.16

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WlTNESSES NfPET-RS. PHoTaurHoenAPu ER, wAsmNaToN. n c.

2 Sheets-Sheet-Z..

M. MeNAMEE.

LAMPS.

Patented July 4,1876.

Nca.17 9,5894.

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WITNESSES 'L PETERS, PNOTO-UTHOGRAPHEFL- WASNlNGTONA D. C.

UNITED Ares Y ATENT (DarrenC I MICHAEL MCNAMEE, OF BALTIMORE, MARYLAND, ASSIGNOR OF ONE-HALF 'HIS RIGHT TO GEORGE T. ROSENSTEEL', SR.,AOF SAME PLACE.

IMPROVEMENT IN LAMPS.

- Specification forming part of Letters `Patent No. l79,589, dated July 4, 1876; application iledi June 3 To all whom it may concern Be it known that I, MrcHAEL MCNAMEE,

of Baltimore, in the State of ll/Iaryland, have invented certain new and useful Improvements in Lamps, of which the following is a specification:

My invention relates, primarily, to improvements in the burners of 11o-chimney lamps for burning coal-oil; and it consists, first, in an -improvement in the construction of the neck ofthe burner, and in the mode of connecting it with the reservoir, to adapt the lamp to receive wicks of large capacity. The invention further consists in an improved devicefor regulating the height of the lowest portion of the wick, so that the lamp may be extinguished at agiven hour by the level of the oil falling below the wick.

In the accompanying drawing, Figure lis a vertical section .of the lamp on the line 1 l, Fig. 2. Fig. 2 is a vertical section on the line 2 2, Fig. l; Fig. 3 is aplan or top view. Fig. 4 is a horizontal section on the line 3 3, Figs. land 2. Fig. 5 is a horizontal section on the line 5 5, Figs. l and Fig.6 is a vertical section on the line 6, Fig. S, showing the burner applied to a reservoir. Fig. 7 is a vertical section on the line 7, Fig. 9. Fig. 8 isa horizontal section on the line S, Figs. 6 and 7. Fig. 9 is a horizontal section on the line 9, Figs. 6and 7'.

Thelalnp-burner is constructed with a wicktube, A, formed, as represented, with guides a', which constitute atiiroat having the convoluted section shown in Fig. 5, so as to fold a tlat wick upon itself, permitting it to be passed through a n eck of moderate capacity, and to be spread into a straight wick of greater breadth at top, where the flame is formed. l) is the customary duct for conveying directly to thei'lame any gases generated within the oil-reservoir. O is a detlectingshield, causing a strong' lateral current of air to' the flame to support combustion, and preventing anyinju- `rious effect from a downward or horizontal draft. D 'is the 'dellecting-cam, which surmounts the deector. E E are longitudinal deectors in line with the llame, extending out on either side thereof, so as to cause the llame to spread freely on each side in its own plane,

and preventing flaring by drafts of air. The parts O D E are connected together vand hinged tothe shell F of the burner at G, so as to be turned up and back at will, as illustrated in dotted lines in Fig. l, to afford access to the wick for trimming the same. H is the customary elevatingshaft, with ratchet- Wheels It. The neck I of the burner is preferably made in elliptical form, and is tted to slide within a socket, J, prepared for it in the lamp, and is held in place by spring-catches K, attached to the burner,'and engaging with suitable notches or projections j on the socket J.

L represents a perforated metallic shield arranged on 4either side of the Wicktube A, and connected at top with the said wick-tube, so as to allow a free current of air to pass around the wick-tube to keep it cool, but preventing any sudden or violent access of said air to the amc. By this means I have completely obviated a leading difficulty and disadvantage experienced in nochimney lam ps, by'effectuall y preventing the injurious conduction ofv heat fr( m the dame to the reservoir. The wick W is attached to the wick-holder S, fitted to slide within the wick-tube, and secured thereto by Vli )s c workin in slots "m in the wick-tube A the lips c (oneor more of them) being formed into indexes, as illustrated in Figs. G and 7, to show by a scale, m', on the exterior ofthe wick` tube the vertical adjustmentot' the wick-holder S. Thisvertical adjustment is for regulating with accuracy the height ofthe lowest portion of the wick, which may be the extremity ot' the wick or not, as preferred. The wick may be passed through the wick-holder and folded into the upper portion of the wick-receptacle.

Its lower end may be attached directly to the wick-holder, and any surplus removed Aat top by regulating the height of the holder, as required. i

The lamp may be set for burning any desired number of hours, and will be automatically extinguished on the expiration ot' the time for which it is set by the oil in the reservoir falling below the level ot' the wick.

This device will be seen to constitute an improvement on a device for a similar purpose described in Letters Patent No. 153,493, granted the 28th day of July, 1874, to John- D. Murphy and myself for an improvement in through the neck and expanding; it to its full bread th at the anle.

2. The combination of the reservoir-socket J, elliptical neck I, and spring-catches for connectingand disconnecting the lamp-burner and reservoir, as required.

3. The sliding wick-holder L, index-point, slots m, and scale m', for regulating` the automatic ext-inguishment of the lamp, as eX- plained.

M. MGNAMEE- Witnesses:

' PTON SCOTT,

N. ROBINSON.

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