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Publication numberUS1508990 A
Publication typeGrant
Publication dateSep 16, 1924
Filing dateSep 25, 1922
Priority dateSep 25, 1922
Publication numberUS 1508990 A, US 1508990A, US-A-1508990, US1508990 A, US1508990A
InventorsSchmidt Frederick J
Original AssigneeSchmidt Frederick J
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Flash-light attachment
US 1508990 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Sept. 16 1924. 1,508,990

- F. J. SCHMIDT FLASH LIGHT ATTACHMENT Filed Sept. 25 1922 1&1...

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Patented sp1.16,1924.



Application led September 25, 1922. Serial No. 590,480.

To all 'whom it may concern.:

Be it known that I, FREDERICK J. SCHMIDT,

a citizen of the United States, residing at Steelton, in the county of Dauphin and State of Pennsylvania, have invented1 certain new and useful Improvements in Flash- Light Attachments, of which the following is a specification.

The present invention appertains to improvements in electrical testing apparatus of a type designed especially as an attachment` unit for flashlights. The primary object in view is to provide a simple device by means of which circuit testing may readily be carried out, employing the light of the flashlight device as the indicating means, one of the essential features of my invention residin in the arrangement of' a compact detacha le section for attachment to the conventional constructions of flashlights without requirement of -modiicatiom The invention is characterized as to novelty by the provision of a shell or case, a .cord unit removably connected thereto and a circuit closing clip by means of which to establish a closed circuit through the attachment when the flashlight is to be used in theusual manner.

These and such other objects as may hereinafter appear are attained by the novel construction, combination and arrangement of parts to be hereinafter specically described and claimed. l

Reference will now be had to the accompanying drawing forming a part of this specification, wherein: p

Fig. 1 is a side elevation of a device embodying my invention, the attachment unit being shown in section, and the flexible conductor in extended position.

Fig. 2 is a sectional view of the attachment unit alone, showing the cord in nested position within the shell.

Fig. 3 is a horizontal sectional view through the unit below the socket support.

Figs. 4 and 5 are side and top plan views, respectively of the circuit closing clip used with the attachment; yand Fig. 6 is a perspective view of the end of the cord unit with the clip in circuit closing position on the testing terminals.

Throughout the following detailed description and on the several figures of the drawing, similar parts are referred to by like reference characters.

Referring to the drawing, 1 indicates the body portion or casing of a conventional type of ashlight, in which is housed a battery 2, the customary closing cap for the end being removed and utilized as the closure for the attachment, as indicated at 3.

The unit forming the special subject-matter of this invention is connected to the end of the case 1 in place of. the cap, as shown in Fig. 1. This unit comprises a tubular shell 4 formed with threads at each end so as to screw upon the end of the casing 1 and receive the cap 3, as aforesaid. Within the shell is a vcross support 5 formed centrally with a socket`6 in which is removably introduced the screw cap plug 7. One of the electric terminals of this plug, designated 8,*when in position contacts with segment 9 partly closlng the opening 10 through the support 5, the other terminal 11 being prolonlged so as to pass through the opening into contact with the battery 2. These terminals are, as usual, spring actuated or yieldable and to the plug is connected a double flexible extension cord 12, or any similar dual cable, each wire of which has connected thereto at its end a testing'terininal 13. Each of these members carries, a

crew 14 for attaching the wire and is formed with a headed extremity 15. The extension cord 12 may be of any desired length, but is preferably no longer than will be readil accommodated by the shell 4 within whic it is designed to be nested by winding it around the plug 7 when not in use, for testing purposes, as shown in Figs. 1 and 2. Removal of the cap 3 from the unit enables the cord to be pulled out and by applying the testing terminals to the points of an electric circuit suspected of containing a short or break, and closing the regular switch 16, the circuit will be closed through the light if not broken between the testing terminals. By means of this device fuses, light bulbs, armature windings and many other electrical articles may be tested for grounds or breaks. A

When not in use and in order to maintain the flashlight operative as usual, I prefer to employ a closing clip l?, as shown in; Figs., 4 and 5, so formed as to' slidably engage with the headed extremities et the testing terminals 13, as shown most clearly in Fig. 6. rllhis holds the two clasped tightly loe- 'tween its spring jaws and maintains the circuit closed through the extension cord, ready to be completed by the manipulation of the switch 16.

lt is obvious that the provision of a separable cord unit for the attacent en. ables this element to be readily displaced for insertion of a longer cord, if desired, replacement of worn conductors, or for other purposes. Owing to the compactness of the device it may readily be carried in the pocket cr ferm a part of automobile equipment.

y Having thus described my invention, what ll claim as new is.:

A shell having an enclosing sup crt al an ,formed with a fixed central socket an openin at its base and an extension cord unit a apted to be stored in the space surroundin said socket and having a plug one termina of which contacts with ,the socket and the. other terminal passing throu h said opening for contact with a lashlig t battery.

lin testimony whereof ll aiix' my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2588772 *Jun 29, 1950Mar 11, 1952Byron SillCombined flashlight and circuit tester
US2607829 *Mar 24, 1950Aug 19, 1952Tipperman Herbert LPortable testing device
US2703385 *Aug 28, 1953Mar 1, 1955Curd Harold GordonContinuity tester
US3711768 *Apr 5, 1971Jan 16, 1973Frazin BCombined electric continuity checker and flashlight
US3973193 *Apr 14, 1975Aug 3, 1976Hayes John CElectric light tester and unit operating device
US4250446 *Jan 4, 1979Feb 10, 1981Raymon PonteCombination flashlight and circuit tester
U.S. Classification324/506
International ClassificationG01R31/02
Cooperative ClassificationG01R31/026
European ClassificationG01R31/02C4