US1375587A - Pocket hand-lamp - Google Patents

Description

J. GRAVES.

POCKET HAND LAMP. APPLICATION FiLED NOV. 10. 1919.

1,375,587. P t ted Apr- 19, 1921'.

2 SHEETSSHEET l.

Jhm Graves,

J. GRAVES. POCKET HAND LAMP.

APPLICATION FILED NOV. 10, 1919- 1,375,587. Patented Apr. 19, 1921.

2 SHEETSSHEET 2- 40 Q; Z4 2 36 Z i 15 54 l l l I '1 l i 15 7% {mm i 1 J6 i I i 5 i l JOHN GRAVES, OF MADISON, WISCONSIN, ASSIGNOR 'IO FRENCH BA TTERY & CARBON 00., OF MADISON, WISCONSIN, A CORPORATION OF WISCONSIN,

rocxn'r HAND-LAMP.

Specification of Letters Patent.

Application filed November 10, 1919. Serial No. 336,940.

To all 'wlwmz't may concern: Be it known that I, JOHN GRAVES, a citizen of the United States, residing at Madison, in the county of Dane and State of W1s cousin, have invented a certain new and useful Improvement in Pocket Hand-Lamps, of which the following is a specificatlon. 1 This invention relates to pocket hand lamps of the type commonly known as flash lamps comprising broadly a case, an electric light bulb and a dry battery so combined that the electric bulb may be lighted at the will of the operator by current supplied from the dry battery. More particularly the invention relates to that type of device exemplified in Patent No. 1,257,596 to J. C.

.Ford, issued February 26, 1918, in which the lamp and battery are separated by a partition rigidly secured transversely of the case to prevent the battery ever being driven against the lamp and, smashing 1t, and in which electric contact between the batte andthe lamp is effected by leading termJ- nals or switch members into a transverse opening in the partition to be there made to contact each other.

The object of the invention is to provide a novel operating means for bringing the switch terminals or contact members which are in the transverse opening in the partition into contact with each other. a

The invention consists in means in carrying out this object in which very effective insulation of the operating mechanism is provided so that' it can be operated by mechanism reciprocatable longitudinally of the lam case without danger of short circuits. ore particularly the invention consists in means for carrying out the foregoing objects which can be easily and plieaply made, which is satisfactory in operation, and will not be readily liable to get out of order.

Still more particularly the invention consists in man features and details of construction which will be hereafter more fully set forth in the specification and claims.

Referring to the drawings in which like numerals represent the same parts,

Figure 1 is a sectional detail view through a hand lamp mechanism equipped withthe device of the invention in its preferred form, the case 10 being metal and conveying current from reflector 26 to cap 12.

Fig. 2 is a plan view on the line 22 of Fig. -1.

Fig. 3 is an inverted 3-3 of that figure.

Fig. 4 is a side view ofa portion of the case showing the button movable longitudinally 1n thecase for operating the switch.

Iflg. 5 differs from Fig. 1 onl in that the switch mechanism is shown in changed position with the electric circuit between the lamp and battery established, and that a fiber case 70, well known in the art, is substituted for case 10, the connection between the battery and lamp being made through a well known rod 72.

Fig. tive.

As in the device of the prior patent referred to, the essential operating parts, other than those entering specifically into the invention as shown in Fig. 1, comprise an exterior metallic case 10 closed at the bottom by a cap 12 inside of which is a spring 14 contacting the lower terminal of the battery 16 whose upper terminal 18 lies centrally of the case 10 and at a substantial distance along the case from the central terminal 20 of the light bulb 22 whose outer terminal 24 rests in the'reflector 26, held in engagement with the case 10 by the perforated cap 28 which incloses the rim of the lamp 30. Between battery terminal 18 and lamp terminal 20, as in the prior art referred to, there is rigidly secured inside the case a disk or partition 32 of insulating material having explan view on the line 6 shows connecting rod72 is perspectending transversely through it, usually at one side thereof, a perforation 34 entered from the top as shown in the drawing by the swinging free end of a flat spring terminal 36, secured to the upper side of the plate by any suitable means as screws 38 and having its other end 40 in engagement with terminal 20 of the lamp. Similarly, entering perforation 34 from the bottom is the end 420i a spring terminal secured to the underside of the plate 32 by any suitable means as screws 44 and having its opposite end 46 engaging the upper terminal 18. The above mentioned prior patent illustrated several different mechanisms for forcing contact members 36 and 42 into engagement with each other to establish a complete electric circuit through the lamp. In providing the improved means of this invention for accomplishing this result the plate 32 is perforated radially of the case 10 and partition 32 to allow for mounting therein the reciprocatable Patented. Apr. re, 1921.

insulated plunger 48 adapted to be moved between the positions of Fig. 1 and Fig. 2 to close the electric circuit as desired, and to be moved backward in the position of Fig. 1 by the spring action of member 36. In order to provide means for moving this plunger 48 from the position of Fi 1 to that of Fig. 5 and mechanically holding it in that position and'to do this from outside the case, the disk or partition 32 is provided with an additional transverse perforation 5O opposite to perforation 34, said perforation 50 being entered by the outwardly extending end of plunger l8. Reciprocatably mounted lengthwise of the case 10 in a suitable cover 52'applied to the outside of the case by any suitable means such as rivets 54 is an operating handle 56 sliding in a slot 58 provided for 'it. This handle 56 is supported upon and oarrieclby an irregularly shaped metallic frame 60 mounted and slidable in the space 64 between the cover member 52 and adjacent portion of wall 10. This member 60 has protruding from it and entering the inside of thecase through a slot 66 a wedge shaped member 68 reciprocatable along the inside of the case by movement of the handle 56 between the position of Fig. 1 and that of Fig. 5.. This wedge 68 is of such a size,

-shape, and so positioned with reference to the other parts that when the parts are in position of Fig. 1, and plunger 48 is moved by member 36 to the osition of that figure, the circuit through-t e lamp is broken by the separation of contacts 36 and 42, and that when the wedge is moved to the position of Fig. 5, it forces plunger 48 to the position of that figure with members 36 and {12in electric contact with each other, thus lighting the lamp in the ordinary manner.

' As heretofore noted, the structure of Fig. 5 differs from that of Fig. l in mechanical construction only in the use of a fiber or other insulating case70 in place of metallic case 10 shown inFig. 1 the continuouselectrio connection between the reflector 26 and the ca 12 being madeby metallic .bar 72 proper y inserted, as shown.

Having thus described my invention what I claim as new and desire to secure by Let? ters Patent, is

.1. In mechanism of the classv described,

' a case, a transversely perforated partition across the case, normally separated electric contact members entering said perforation from opposite sides of the partition, and a plunger mountedin an opening in the partition and reciprocatable across the case to force one contact member into engagement withthe other.

2. In mechanism of the class described, a case, a transversely erforated partition across the case, normal y separated electric contact members entering said perforation. from opposite sides of the partition, and a I plunger mounted in an opening in the para case, a transversely perforated partition across the case, normally separated electric contact members entering said perforation from opposite sides of the partition, and a plunger mounted in an opening in the partition and reciprocatable across the case to force one contact member into engagement with the other, one of said contact members being of spring material and adapted to resist the movement of the plunger.

4. In mechanism of the class described, a case, a transverse partition perforated at two opposite points, normally separated contact members in one perforation, a wedge member reciprocatable along the inside of the case through the second perforation in the partition, means outside the case for. reciprocating said wedge, and means movable along the partitions and actuated by said wedge, adapted to close said contacts.

5. In mechanism of the class described, a case, a transverse partition perforated at two opposite points, normally separated contact members in one perforation, a wedge member reciprocatable along the inside of the case through the second perforation in the partition, means outside the case for reciprocating said wedge and means reciprocatab'le in a third opening in thepartition and-actuated by said wedge, adapted to close said contacts. l

6. In mechanism of the class described, a case, a transverse partition perforated at two opposite points, normally separated contact members in one perforation, a wedge member reciprocatable along the inside of the case through the second perforation in the partition, means outside the case for reciprocating said wedge and a plunger of insulation material movable along the par-.

tition and actuated by said wedge, adapted to close said contacts.

7. In mechamsmof the class described,-

erforated at the case through the second perforation in the partition, means outside the case for reciprocating said wedge, and means movable along the partition and actuated by said wedge, adapted to close said contacts, one of said electrical contact members being a spring resisting the movement of the member actuated by the wedge.

9. In mechanism of the class described, a case, a transverse partition perforated at two opposite points, normally separated contact members in one perforation, a wedge member reciprocatable along the inside of the case through the second perforation in the partition, means outside the case for reciprocating said wedge. and reciprocatable in a third opening in the partition and ac: tuated by said wedge, adapted to close said contacts, one of said electrical contact members being a spring resisting the movement of the member actuated by the wedge.

10. In mechanism of the class described, a case, a transverse partition, perforated at two opposite points, normally separated contact members in one perforation, a wedge member reciprocatable along the inside of the case through the second perforation in the partition, means outside the case for reciprocating said wedge and a plunger of insulation material movable along the partition and actuated by said wedge, adapted to close said contacts, one of said electrical contact members being a spring resisting the movement of the member actuated by the wedge.

11. In mechanism of the class described, a case, a transverse partition perforated at two opposite points, normally separated contact members in one perforation, a wedge member reciprocatable along the inside of the case through the second perforation in the partition, means outside the case for reciprocating said wedge, and a plunger of insulation material reciprocatable in a third opening in the partition and actuated by said wedge, adapted to close said contacts, one of said electrical contact members being a spring resisting the movement of the member actuated by the wedge.

In'witness whereof, I have hereunto'subscribed my name in the-presence of two witnesses.

JOHN GRAVES. Vitnesses D. E. Wm, P. A. Bmoos.

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