US38764A - Improvement in head-lamps for vessels - Google Patents

Description

No. 38,764 PATENTED JUNE 2, 1863.

11. SANGSTER. HEAD LAMP FOR 'vBssBLsi each.

additional reflectin g-surface' for the light.

. UNITED i STATES PATENT i-OFmcE.

1-1 new SANGSTER, or BUFFALO, nnw Y RK,

IMPROVEMENT IN HEAD-LAMPS FOR vEss ELs. I

Specification forming part of Letters Patent No. 38.764, dated J une 2, 1863. I v

To all whom t may com-era.-

Be it known-that 1, HUGE Snucsrnn, of Buffalo, in Erie county and State of New York, have invented certain new and useful Improvements in Head-Lamps for Vessels or' Canal-Boats; and I declare the following description of my; method of constructing the same to be sufficiently clear and exact to enuble Others skilledin the art to make and use my invention, and forthat purpose reference is hadto the accompanying drawings and the letters of reference marked thereon.-

. The same letters in Figures 1', 2,3,4, 5,6, and 7 in said drawings represent similar parts in The nature of my invention consists-'-- First. In a movable oil-pot so a'rrangedor constructed that by means of a knob or thumbpiece placed outside of thelamp-case the oilpot may be moved to or from the reflector and properly adjusted to the-focus of the same .without the necessity of opening the door of {thelamp case or covering, and in so con-, *structing and attaching the reflector to the lampthat it may be moved vertically, up or down, or caused to swing upon a center at its back by means of two knobs or thumb-pieces, which are; Placed outside of the lamp-case, thus giving complete control of the light without the necessity of opening the door of the lamp. It enables the boatm-an'to adjust his" 7 light exactly to the focus ofthe reflector,- or to cast the rays of light up or down.

. Second. In an additional ventilation to the top of the lamp, consisting of four tubes covered with cones, for the purpose of allowing a larger and clearer passage 'for the hot air generated within the lamp-case; also, interposing between the looking-glass and the sur- -face of the wings of the lamp a non-metallic substance, such as a thin sheet of board,{ which is inclosed in a frame with the glass,) for-the purpose ofv preventing the'amalgamation of the tin on the wings of the lamp and the quicksilver on the looking-glass, and thuspre ventingthedestruction of the silver on the glass which is attached to the wings'to give an Fig.2 in said drawings represents a front View of the lamp complete, showing the burner,

chimney, oil-pot, ventilation-tubes, and the wings. A and A are the wings, B the reflector,

ment'to the reflector. I its place by a double flange in a similar manner to knob-H. Iis a knob and screw, also held to its place by-a donbleiiange. It screws G the chimney,lD,the bur uer,'E the oil-pot, and)? the recess along which the lamp-pot slides. A is the lookingglass, which is fast enedin a frame, as shown at Fig; 6, audi attached to the lamp-wing by slipping up one.

end "into or behind the slip or groove marked 8. The end of the glass frame under the slip Sis shown-by the dotted lines, and marked T. 4 The lower end is fastened by a thin strip of 7 met.

al, which passes down into agroove, marked Q.

This piece or fastening is marked R,and pro-- jects a little over the lower part of ,the frameand holds it to its place, as shown'in the wing A. F. and F are the additional ventilationtube's. The dotted lines show about the height" required forthe tubes inside of the'case. R represents the bail or hand-1e by which the lamp is carried. 4

ing the -oil-pot,refl'eetor, &c., also'the arrangewent outside of the lamp by which the oil'- pot and reflector are moved. N- and thear rows represent a case or box, within which the arrangement for moving the, reflector and throwing the light up or down ismade to" Swing atthe point L. K-is a piece of metal, which swings at the point L, and towhich the reflector is 'easily' attachcd or detached. This piece of metal is fastened to thec'ase' N, by a wire, which passes through its center and I through the sides of the case N. This wire or 'bolt is shown more clearly in Fig. 4 and Fig. 5, and is marked M. J represents a screw,

which is bent, forming part of a circle, and is firmly attached to the piece K. H is a knob, which, is made hollow, through which the screw J is made to work; 7 This knob is hold fast to the case N by two-flanges, one on the outside of the case and one on the inside.

They are marked J and J 'Byi turning this knob H to the right or left it works upon. the

screw J and moves the piece K and the re- 4. flcctor upon the center or joint L, thus giving the movement to the reflector, which throws the light up or down. The case-N works in a slide up-and down the back of the lamp, and is moved by the-knob and screw G, which knob, on being turned, givesthe'vcrticalmovef, This knob-G is'held t0 Fig 1 is a side elevation of the lamp, show'-.

nto a piece which" is attached to the lamp-pot, ind is marked 1 By turning thisknob the lamppot is made to move to or from. the reflector,-'in and alongthe recess F. F represents the feet upon which the lamp stands.

Fig. 3 represents a front view of the lamp,

showing the way in which the grooves are made which hold the glass. U and U representtwo wires, which hold the wings when shut or closed. These wires also hold them when open; but, as theya' rein common use on canal-boat lamps, they need not be described here. W-and W representthe groove for the glass. It is buta continuation of the top.

of the lamp, which is bent down and formed into the shape of a groove into which the glass is slid.. The'bottoin groove, is madein as imi- 1 lar manner, being a) part of the bottom of the marked X and X Fig. 7 represents aseetion through the lumpdoor, and shows the manner in which the front glass is held to its'pla'ce. The glass is made to s'lip'upward in the slide or grooves in the door-posts, and is kept up by apiece, Y, which slips into a groove under the lower end lampbent into the from of a groove, and isof the glass, as clearly shown by thedraw ings.

in Fig. 2, A is the recess, into which the purpose of adjusting it to the focus of the reflector.

'3. The manner described of attaching the looking-glass and frame tofthe wings of the lamp," also the panel or recess which is stamped into the win; forits reception.

4.'Thecone-covered liOt air tubes, as described, and the grooves i'orthe glass, bent and formed of the same pieces of metal as the top and bottom, as shown in Fig. 3, and lettered W VW X X, also the manner of holding the'front glass in the door to its place, as shown in Fig. 7, and by thepieceY i HUGH. SANGSTER. \Vituesscs:

JAMES SANGSTER,

DANIEL M. ZooK.

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