US1200366A - Battery-lamp. - Google Patents

Description

J. F. KERLIN.

BATTERY LAMP.

APPLICATION FILED FEB. I9. 1915.

Patented om. 3,1916.

ATTORNEY UMTED STATES PATENT OFFICE.

JOHN F. KERLIN, OF LAKEWOOD, OHIO, ASSIGNOB T0 NATIONAL CARBON COMPANY,

A CORPORATION 0F NEW JERSEY.

BATTERY-LAMP.

Specicaton of Letters Patent.

Patented Oct. 3, 1916.

Application filed February 19, 1915. Serial No. 9,402.

used in the past have been more or less eX- pensive to make, if constructed in a substan-- tial way, and those of simpler arrangement have the objection that the' lamp is not suffiv ciently protected against breakage.

The object of my invention is to overcome these objections by providing a lamp that is simple in construction and so arranged that the bulb and other lamp parts are secure from breakage in ordinary use.

Other objects will appear in the appended description.

In the drawings z-Figure 1 is a section through a standard six-inch cell, with the lamp attached. Fig. 2 is a top view of the battery shown' in Fig. 1. Fig. 3 is a section through the .lamp reflector, with a r screwed in place to prevent the pitch seal from covering the contact portion of the carbon electrode. Fig. 4 illustrates a further means of-accomplishing the same result i as in Fig. 3. Fig. 5 is a top view of a modif modification shown in Fig. 5.

fication. Fig. 6 is a partial section of the Fig. 7 is a. section through a. vest pocket type of flashlight. Fig. 8 is a partial section of a y type of switch that can be applied to any of the modifications. Fig. 9 is a partial section of another form of switch. Fig. 10 is va partial section of a cell having a remov- 1 able binding post in the lamp socket. Fig.

llis a modification having two permanent binding posts.

In Fig. 1, luis the carbon electrode, 2 the l battery mix surrounded by a bibulous lining 3, or a cloth bag, as desired. The zinc can 4 acts as the positive electrode in the usual way and is surrounded by a jacket 5. Before pouring in the seal on top of the battery mix, I electrically connect the lamp refiector 6 to the zinc can by soldering or otherwise attaching one or more metalstrips 6. In Figs. 1 and 2, three such strips are shown, so that the reflector is rigidly held in place. To prevent themolten pitch from covering the top of the electrode, a rod 7 of wood, metal or any other material, can be screwed down in the lamp socket until it rests against the contact portion of the electrode. The molten pitch or other seal is then poured in around the lamp reflector until it is flush with the -top of the can'and the reflector. The rod 7 is then removed and the lamp inserted. A

The contact portion 7 of the carbon electrode can consist of an ordinary driven dowel or of type metal cast in a cavity in the upper end of the carbon. The usual -carbon cap 8 can also be employed as shown in Fig. 6.

Instead of using the rod 7 to prevent the p itchfrom covering the contact portion of odthe electrode, a band of paper, fiber or other insulating material 8 may be fitted around the outside of the lamp socket, yso that when the molten seal is poured in,`it cannot reach the central part of the electrode. In this modification the insulating band would be left in the battery permanently. It is not absolutely necessary that an arrangement be used to prevent the pitch from covering the top of the electrode, as it may be drilled or otherwise 'removed from the electrode after it has solidified.

In the modification shown in Fig. 1 no switch is shown, and the lampv will be lighted or extinguished by screwing the bult` down or out respectively. With the standard six-inch cell, the light is usually left on for a considerable length of time, so that a quick acting switch is not required, but in some cases such a switch may be of advantage, and I have illustrated in Figs. 5 and 6, a switch which consists of a bar of metal 9 pivoted on the usual binding screw 10 of the cell. This bar contacts with the upper porcut from the same, may serve this purpose.

Another form of switch is shown in Fig. 8 wherein the reflector is made with an arm 12 that extends above the zinccan, or the binding post 10. A screwcontact 13 can be threaded through this arm, so that permanent contact can be made by screwing the same down into engagement with the binding post. Also by pressing down :on the screw 13, the arn will bend and a quick make-and-break switch is had.

In Fig. 9 I have shown the arm 12 soldered or otherwise secured to the zinc can, and extending inwardly toward the lamp refiector, so that contact can be made with the same, by either screwing down the screw 13 or by pressing on the same. Many other types of switches could obviously be used with my improved form of lamp.

In some of the miniature flashlights now.

found on the market, a permanent nickeled case is provided that/ costs as much, if not more, than the battery itself. In other types, a stiff metal case is provided, which is covered with imitation morocco. There is, of course, a demand lfor such expensive types of casings, but there is a much greater demand for an efficient miniature flashlight which has been reduced in cost by the elimination of all expensive features that do not add to the worth of the battery and lamp attachment. For this reason my improvement is admirably adapted to miniature flashlights, as no outer casing is needed and no expensive lamp attachments are necessary. While my improvement could`be used with the tubular type of flashlight, I have illustrated, by way of example, the so-called vest pocket type, in whichv three miniature batteries are placed side by side'. These batteries have the usual zinc cali 4 and central carbon electrode 1 which may have a metal cap or other contact piece. The cells are insulated from each other by insulating strips 15 and are incased in a paper jacket 16. The three cells will be connected in series, so' that one terminal ofthe battery isthe zinc can 4 on the left of the figure, and the other terminal, the carbon electrode .1 of the central cell.

A small lamp reflector 6 is secured in the seal 5', as in the other modifications, so that the lamp is secured in the seal beneath the top of the battery. Contact can be made by screwing the lamp in or out, but I have shown a preferred form of switch, consisting of an arm 17 secured to the reflector andbent over the side 'of the battery.- A-

hole 18 is made in the jacket 16 beneath the free end of the arm 17, so that by pressing down on the arm the kcircuit Willbe completed and the lamp lighted. By releasing pressure'on the arm the circuit will be broken.

No connection between the cells and the battery of Fig. 7 has been shown, as it would complicate the showing, but the connection would be obvious toanyone skilled in the art. For instance, the zinc can 4 of the central battery would be secured to the carbon electrode 1 of the cell on the right, and the can 4 of this cell would in turn be connected to the carbon 1 of the battery on the left.

The switch illustrated in Figs. 5, 8 and 9 could obviously be used on the battery shown in Fig. 7. A lens could be used with the reflector shown in the various figures, but I prefer to use, especially in the vest pocket type of battery, that type of lamp bulb which itself acts as a lens. Such types of lamps are on the market and are used in flashlight batteries.

In order to make my form of battery adaptable to either flashlight or ordinary use, a connector or binding post may be supplied as shown in Fig. 10. When this terminal is screwed in place, the cell is adapted for standard usage. By removing the connector and inserting a lamp bulb it 'is converted into a lighting battery.

1. In a battery lamp, positive and negative electrodes, a seal in the end of the batterv and a reflector embedded in the seal and electrically connected to one electrode.

2. In a battery lamp, positive and negative electrodes, a seal at one end of the battery, a cavity in said seal, and a lamp in the cavity adapted to be electrically connected to both of said electrodes.

3. In a battery lamp, positive and negative electrodes, a seal in one end of the battery, a lamp reflector embedded in said seal, a lamp in the reflector in engagement with one electrode, and a switch adapted to close contact between the lamp reflector and the other electrode.

4. In a battery lamp, a plurality of cells connected -in series, a jacket surrounding said cells, a pitch or analogous seal in the top end of 'said jacket covering the cells, a lamp reflector embedded in said seal, and a switch and a terminal post connected to each elecadapted to electrically connect the reflector trede. 10 with one terminal of the battery, and a lam In `testimony whereof, I hereunto ailiX my bulb contacting with the reflector and wit signature.

5 the other terminal' of said battery. JOHN F. KERLIN.

' 5. In an electric. battery, positive and Witnesses: negative-electrodes, a seal in the end of the J. H. CROSBY,

battery, a reflector embedded in the seal,` H. G. GRovER.

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