US 1784114 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
0&9, 1930. I B. SCHUL-TE 1;7s4,114
' BATTERY HA ND LAMP I Filed June 19. 1928 2 Sheets-Sheet 1 ATTORN 5Y3 Dec. 9, 1930. w. B. SCHULTE BATTERY HAND LAMP Filed June 19. 1928 2 Sheets-Sheet 2 3 .J W 33 a W f5. (ail/1% Patented Dec. 9, 1%130 WALTER 3B. SCHULTE, F MADISON, WISCONSIN, ASSIGNOR T0 BURGE$S BATTERY COM PAN'Y, 0F MADISON, WISCONSIN,
A CORPORATION OF WISCONSIN" BATTERY HAND LAMP Application filed June 19,
My invention relates to a battery hand lamp which consists of a dry cell battery with a cup at the top thereof, the cup containing an incandescent bulb in a removable holder so constructed that the act of flipping the cover open and shut with the thumb or finger renders the hand lamp operative and inoperative respectively.
This invention is an improvement upon an earlier invention of John S. Zook, an application for which was filed in the Patent ()ifice on October 10, 1927 under Serial Number 225,045 (now Patent No. 1,701,093, granted February 5, 1929). It is an object of the present invention to provide an improved battery hand lamp which is cheap to construct. It is a further object of the invention to provide a hand lamp in which the lamp bulb and the dry cells may be renewed J0 independently upon exhaustion. Further objects and advantages will be made clear b the following detailed description, which is to be taken in conjunction with the accompanying drawings, wherein,
Fig. 1 is a sectional elevation of the battery hand lamp with the cover in solid lines for the operative position, and in dotted lines for the inoperative position;
Fig. 2 is a perspective view of the incandescent bulb holder with the cover in the open or operative position;
Fig. 3 is a perspective view of the cap of the bulbv holder with the cover in the closed position;
Fig. 4 is a perspective'view of the metallic Fig. 5 is a perspective view of an insulating member which is contained in the removable holder together with a looped spring wire which is associated with the insulating member as Willbe explained hereinafter;
Fig. 6 is a pers ective view of an alternative form of bulb older;
Fig. 7 is a perspective view of the insulating member to be used with the form of holder shown in Fig. 6; and
Figs. 8, 9 and 10 are views of two modifications of the preferred form of my invention. In my novel construction, I enclose a bat- 1929. fierial No. %86,501.
tery consisting of one or more dry cells, 1 and 2, electrically connected, as by connector 3, in a suitable carton 4, which may be of paper and which projects above the top of the dry cells. In the projecting portion of the carton I place a cup 5, preferably formed of metal which is electrically connected to the negative can, as by soldering, as at 6. An opening 7, in the bottom of the cup 5 allows the other pole, preferably thepositive 8, to be exposed. The positive pole must be insulated from the cup, as by a sheet of insulating paper 9. The side edges of opening 7 are bent up, as at 10. At the end of the cup opposite to opening 7 wings 11 are formed as by punching in the sides of the cup 5, the purpose of these wings to be explained hereinafter. A small'lug 12 is formed in the bot tom of the cup at the end remote from opening 7, as by stamping the metal. 7 An incandescent bulb 13 is mounted in a removable holder, one form of which is illustrated in Fig. 2. An oval-shaped insulating member 14 of a material such as bakelite or micarta, as shown in Fig. 5, is slotted, as at 15, one end of the slot being enlarged and provided with screw threads for the reception of the bulb 13. The slot- 15 is sufficiently narrow to provide a three point bearin for bulb 13. The under side of the member 14 is 30 recessed adjacent the end opposite the enlargement of slot 15, as shown at 16. Grooves 17 are provided in the sides of insulating member 14.
A metallic oval cap 19, (see Fig. pro- 5 vided with hinged cover 20 fits tightly over the upper portlon of insulating member 14. The engagement of the two should be such that relative movement is practically impossible. Spring wire 21 is adapted to traverse e0 grooves 17 and its retention therein is strengthened by locating the longitudinal portions of the grooves high enough in the sides of insulating member 14 that the longitudinal portions of the wire are squeezed between the sides of cap 19 and insulating member 14. Both the free and the looped ends of spring wire 21 extend beyond the grooves in insulating member 14 and are bent almost at right angles in the longitudinal direction of member 14 where they emerge from grooves 17.
Hinged cover 20 is cup-shaped to accom modate incandescent bulb 13 and is provided with an extension 22, which functions as a contact or switch member. The sides of extension 22 are notched to form cams 23. At the hinge, which is located at the junction of extension 22 with cover 20, extension 22 is looped into a double fold, as shown in Fig. 1. One loop of the fold contains the hinge rod 24. In order to impart greater rigidity to extension 22 a drop of solder 25 ma be deposited so as to join the second loop ot the fold to the main portion of cover 20, as illustrated in Fig. 1. To further stifi'en extension 22 and guard against'its becoming bent out of the proper shape with use, a groove'or channel 26 may be rolled or stampedtherein. The uppermost outer portion of cover 20 is provided with corrugations 27 or a small punched lug or similar protrusion to assist in Its easy operation by the thumb or finger.
The bulb holder cooperates with the battery having the cup 5 mounted as described by slipping spring wire 21 underneath wings 11 and over lug 12 so that the spring wire 21 presses firmly upon the bottom of cup-5 and the base of bulb 13 contacts with the terminal 8 of the battery as shown in Fig. 1. The recess 16 perm ts insulating member 14 to assume its proper position without interfering with wings 11. The pressure of wings 11 upon spring wire 21 retains the holder firmly in place and insures good contact between the base of bulb 13 and exposed pole 8 of the battery when the said bulb13 is screwed down into its socket.
Since the cup 5 is electrically connected to one pole of the battery at 6, electrical connection is made with the hinged cover 20 through spring wire 21, which has its looped end pressed firmly upon the bottom of cup 5 and has its free ends making a wiping contact with cams 23 of cover 20. The lower edges of cap 19 are in contact with the upper edge of cup 5 and electrical connection is also established from cup 5 through cap 19 and hinge rod 24 to cover 20.
hen the cover 20 is in the operative position, as shown in solid lines in Fig. 1, the extension 22 presses against the screw thread of bulb 13 making a wiping contact with the bulb and completing the electrical circuit. The cover 20 may be plated or polished upon the inside to form an effective reflector for the bulb 13 when in the operative position. To render the hand lamp inoperative. the cover 20 is flipped shut with the thumb or finger. In this position, as shown in the dotted lines of Fig. 1, the extension 22 is out of contact with the screw thread of bulb 13 and the electrical circuit is broken. Longitudinal slot 15 in insulating member 14 permits the free movement of extension 22 back and forth from operative to inoperative position and vice versa. The bulb 13 may be positioned slightly to one side of the longitudinal center line of insulating member 14 so' that each time cover 20 is snapped open extension 22 will tend to screw bulb 13 down more tightly against positive pole 8.
In the inoperative position spring wire 21 continues to exert upward pressure upon cams 23 and there is practically no possibility of the cover being accidentally opened. Nor is there any practical ossibihty of electrical connection being esta lished between cover 20 and the screw terminal of bulb 13. The above. mentioned pressure of spring wire 21 upon cams 23 causes the cover 20 to assume the open and closed positions with a snap by reason of the fact that greater depression of wire 21 and, hence, greater pressure occurs at the intermediate position. In the inoperative position, cover 20 forms a very effective protection against injury to the bulb in case the hand lamp is struck against a rigid object.
For the purpose of the present invention the sides of opening 7 need not be bent up as shown at 10. Such construction is used, however, in the form of handlamp covered by the before-mentioned Zook Patent, and it is desired that the cup 5 be adapted for use with both forms of construction.
In a modification of my improved hand lamp, a slightly different form of bulb holder is used. The insulating member is provided with two pairs of grooves 28 and 29, one adjacent each end (see Figs. 6 and7). Spring wire bail 30 is bailed to the insulating member at its open end, traverses grooves 28, and performs the function of maintaining the bulb holder in position within cup 5. Spring wire 31 traverses grooves 29 and with its looped ends pressing upon the bottom of cup 5 and its free ends engaging cams 32 of the hinged cover, constitutes the electrical connection'between the cup 5 and the hinged cover. Extension 22 forms the contact or switch member. The method of operation of this modification is the same as that of my preferred form.
As shown in Fig. 8, the metallic cup 5 may be dispensed with and the battery and paper carton 4 encased in a metal, heavy paper, leather or imitation leather carton 33. The bulb holder fits into the u per part of the carton 33 in such a manner tiiat the lower edges of cap 19 coincide with the upper edges of carton 33. The bulb holder is similar to that described in Figs. 5 and 6 of the drawings. In this form of the invention, the position of the separable head, comprising the incandescent bulb holder assembly, may be reversed within the carton 4, in which event the end terminal of bulb 13 will contact with the bottom or negative pole of cell 1 and the spring wire 31 will contact with the positive pole 8 of cell2. The cells 1 and 2 are insulated from each other by means of suitable insulating strip, 34.v r
Figs. 9 and 10 illustrate a further modification of my invention. In this construction one or more cells 35, positioned'preferably one above another in tubular form, are connected in series and the whole encased in a paper or other suitably insulating carton 36 with an opening 37 arranged in its bottom portion. Two metal cartons 38 and 39, one of them having its bottom recessed and punched to form a cup 40 similar to the cup 5, are fitted over carton 36 and their open ends joined, as by welding at 41. The carton 36 is so arranged that opening 37 in its bottom portion coincidesW-ith the opening in the bottom of cup 40. The incandescent bulb holders heretofore described are adapted to be mounted in cup 40 in the manner heretofore described and the end terminal of the lamp bulb is adapted to contact with the negative pole 42 of the upper cell 35 while electrical connection is established from the positive pole 43 of the lower cell 35 to cup 40 through the metal cartons 38 and 39. In this form of construction it is necessary to discard the metal carton with the cup at one end upon exhaustion of the cells.
1. A battery hand lamp comprising a carton, a dry cell battery arranged therein, said carton extending above the top of said battery, a cup arranged in the upper part of said carton, said cup being electrically connected to one pole of said battery and having an opening for exposing the other pole and being insulated from said second pole, a.
holder fitting into said cup, said holder comprising an insulating member, a cap fitting over said insulating member, a looped spring wire squeezed between said insulating member and said cap, said insulating member having a longitudinal slot and a recess at the end opposite said opening in said on an incandescent bulb removably mounted in one end of said longitudinal slot and arranged to make contact with said exposed pole, and a cover hinged to said cap, said cover having notched cams and an extension at its hinged end, said spring wire being adapted to maintain said holder firmly in position within said cup, to press firmly upon the bottom of said metallic cup and to have its free ends 00-.
operate with said notched cams to maintain electrical connection between said hinged cover and said cup and to exert spring pressure upon said cams to cause said cover to assume the open and closed positions with a snap, said extensions being provided with a channel and being adapted to make and break contact with said bulb when said cover is in the open and closed positions respectively.
2. A battery hand lamp comprising a carton, a dry cell battery arranged therein, said carton extending above the top of said bats tery, a cup arranged in the. upper part of said carton, said cup being electrically connected to one pole of said battery and having an opening for exposing the other pole and being insulated from said second pole, a
said spring wire being adapted to maintain said holder firmly in position within said cup, and to maintain electrical connection between said. hinged cover and said cup, said cover being adapted to make and break contact with said bulb when in the open and closed positions respectively.
3. A battery hand lamp comprising a carton, a dry cell battery arranged therein, said carton extending above the top of said battery, a cup arranged in the upper part of said carton, said cup being electrically connected to one pole of said batter and having an opening for exposing the other pole and being insulated from said other pole, a. bulb holder in said cup, an incandescent bulb removably mounted in said older and arranged to make electrical nnection with said exposed pole, a cover hinged over said holder, and' a looped spring wire carried by said holder and having its looped end pressing firmly upon the bottom of said cup and having its free ends cooperate with said hinged cover to maintain electrical connection between said cover and said cup, said cover being adapted to make and break contac't with said ulb when in the operative and inoperative positions respectively.
4;. In a battery hand lamp, a metallic carton, a battery arranged therein, said carton extending above the top of said battery and being insulated therefrom, a bulb holder fitting into the top of said carton, and an incandescent bulb mounted in said holder and arranged to make contact with one pole of said battery, said bulb holder comprising an candescent bulb mounted in saidholder and arranged to makecontact with'one pole of said battery, said bulb holder comprising an insulating member, a metallic cap fitting over said insulating member, a cover hinged to said cap, and a spring wire held in place by said insulating member, said spring wire being adapted to maintain electrical connection between said cover and the other pole of said battery, said cover being adapted to make and break contact with said incandescent bulb.
6. In a battery hand lamp, a battery, a cup above the top of said battery, a bulb holder in said cup, said holder comprising an insulating member, an incandescent bulb mounted therein, a cap fitting over the top of said insulating member, a cover hinged to said cap, a wire bail fastened to said insulating member, and a looped spring wire clamped between said insulating member and said cap. 7. In a battery hand lamp, a dry cell bat tery, a cup arranged at one end of said battery, said cup being electrically connected to one pole of said battery and having an WALTER B. SCHULTE.
opening for ex osing the other pole and being insulated 1 0m said second pole, an incandescent bulb holder mounted in said cup, and a cover hinged over said holder, said cover being adapted to be arranged in an open or closed position, and being of such shape as to form a reflector and a closure for said hand lamp when in the open and closed positions respectively.
8. In a battery hand lamp, a battery, a cup above the top of said battery, a bulb holder of insulating material in said cup, an incandescent bulb in said holder, a cover hinged over said holder, and means comprising a looped spring wire carried by said bulb holder to retain said holder firmly in position within said cup and to maintain electrical connection between said cup and said cover, said cover being adapted to make and break electrical contact with said incandescent bulb.
9. A separable incandescent bulb holder for a battery hand lamp comprising an insulating member, a cap fitting tightly over the to of said insulating member, a cover hinge to said cap, and a. looped spring wire carried by said insulating member, and ada ted to complete an electric circuit from sai battery to a bulb arranged in said insu lating member. i
10. In a battery hand lamp, a battery, a cup mounted over said battery, said cu being electrically connected to one pole 0 said battery and having an opening in the bottom to expose the second pole of the battery, an incandescent bulb mounted in said cup and having its base terminal in contact with the exposed pole of said battery, and a cover .hinged over said bulb, said cover being in ing in electrical engagement with one pole