US1483055A - Electromechanical lamp - Google Patents

Description

Feb. s, 1924,. 1,483,055

P. BLOT ELECTROMECHANICAL LAMP Filed March 14. 1922 rammed Fb.5,1924.

l raux. BLo'r, or rams, FRANCE,

ELECTROMECHANICAL LAMP.

Applicativi med laren 14, 1922. serial No. 543,759.

To all whom t may concern:

Beit known that I, PAUL BLofr, a citizen of the French Republic, and a resident of the city of Paris, France, have invented Imyprovenients in Electromechanical Lamps, or

which the following is a full, clear, and exact description.

In known electro -Lmechanical pocket lamps, the contact device of the 'bulb and 1o the connecting device between the armature and the bulb are made in a manner which is too precarious for the work of such an ap- .paratus, which is liable, 'in the ordinary course of use, to violent jars and shocks.'

In fact,it frequently happens that, with the known contact devices, a fairly heavy j ar will displace the Contact and put out the light. A shock ofthis kind also frequently L breaks the wire connecting the armature with the lbulb contact,. a circumstance which necessitates the lamp being taken apart complete in order to remake the connection. l Finally, the bulb contact devices can only be applied to lamps with a metal casing, since it is only by means of the latter that the circuit can be completed.

Inv some of these lamps the hub of the magnet comprises a ratchet device with loose rollers, the cover of which device` is carried by the ratchet' and leaves an Vappreciable space between its outer edge andthe interior housing of the barrel. his arrangement presents the ufollowing serious inconvenience: f

Under the action of. a somewhat ,violent shock, the rollers shift round into a position at right angles to the normal, owingto the space aforesaid, and escape from the barrel, so that the wheel ar is no longer actuated .4 Iby the operating andle.

The object of the present invention is to remedy the various inconveniences mentioned, and relates -to an improved electromechanical lamp having the following 'es-v 5 sential features 1 The bulb contactis composed of a -flexible metallic strip mountedon the metallic cage supporting the' eldctri p 4driving gears .and is vin contact with the N male member'of the head carrying the bulb, the said' strip carrying an insulated contactpiece to which is attached the conductor from the armature and which contacts with the insulatedcontact-piece on the bulb.'

N According to onev embodiment, this con'V 'c generator 4and its tact is formed by a very vflexible strip of steel bent round at right angles and secured,I

by its horizontal branch on the cage housin the gears, said branch carrying the insulate contact-piece whilst the vertical branch is in .contact with the male member of the head of the bulb in order to make the necessary contact.

In another embodiment, the metallic strip is mounted on one of the spindles of the gears and is connected, by means of the in sulated contact-piece, with a metal cap in which the bulb 1s screwed.

The invention also has for its object a device for conveying current to the bulb, wherein the conductor'conveying the current to the insulated contact-piece, is flexible and terminated in the female member of a push button adapted to fit on .the male member to which the armature conductor isconnected and which is secured on an insulated plate mounted, either on the cage carrying the electric, generator and its driving members, or on the hub of the larmature.

Finally, the invention also relates to a ratchetrdevice with' loose rollers, arranged in such a manner as to keep the rollers in their proper position and to` prevent them from escaping out of the barrel.

.In order that the invention may be clearly understood, a form of construction of the improved electro-mechanical lamp will be described hereafter with reference to the accompanying drawing and by way of example only.

Y Fig. 1 is aniinner front'elevation of the whole of the lamp, the casing being shown in vertical section and the bulb taken out of its housing. I

Fig.- 2 is a partial section made according to line 2 2 of Fig. 1, showing the first form of construction of the contact of the, bulb.

Fig. 3 is a verticalfsection of a modification.

Fig.l 4 isa partial cross vertical section made according to linev 4 4 of'Fig. 1.

ASSIGNOR TO SOCIETE BLUE-GARNIER & CHEVALIER,

OF PARIS, FRANCE.

lFigV 5 is a vertical section of the ratchet formed by two p ates 2 held at a suitable distance apart by three tubular stays, and l I ,at right angles and secured, at one end,

secured within the casing 8 by three bolts 2 fit-ted in the walls of the said casing and A'lhesc plates 2 are cut out as shown in the drawing, so as tofform the supports neces# sary for mounting' the operating lever as 'Well as the gears for imparting a very rapid rotary movement tothe multipolar magnet '5 of' the electric generator about the shaft `6 on which is rigidly mounted the armature 7 of said generator.

The casing 3, which is constitued by two, similar shells engaged -with each other and made of metalior other stamped or moulded .materiah is provided at its upper part with tan inclined wall in which is mounted a socket 3 adapted to receive the male member 13 of the electric bulb and to present the latter in a position inclined on the axis of the apparatus so as to light 'the spacein front of the user, the hand remaining in its natural position. Y y

According to the invention, the current from the armature 7 is conveyed, in the form of construction shown in Figs. 1 and ,l 2, to the contact" of the bulb 8 by means of a very flexible strip of steel 9, bent round on the cage. 2 containing the gears, by means of a screw or rivet 10.

The horizontal Abranch of this strip 9 carries at its centre an insulated 4contact piece 11, to which is riveted or soldered one end of a flexible wire 12, the other end beingv connected to the armature, as will be eX- plained later, by a movable ,connecting de- Thev vertical branch of the said metal 'strip 9 isv directed so as yto rub against the male metalmember 13 of the head of the .bulb and to thus 'ensure the necessary connot lbe disturbed by any jar or shock.-

' .'Moreover, the arrangement of the `vertical branch and its permanent contact with the metal cap of the bulb ensure the body contact and enable the circuit. of thesaid bulb yto be completed even with a casing of ,in-

,Sulatin material. l

tFinal ,f the immovable position of the Contact in relation to the cage 2,-' together with the pressure which it exerts "on the centre of the bulb cap, prevent the aforesai lam from being extinguished through .im-

per ect or bad contact. In' the formlof construction illustrate in Fig. 3, the metal strip 9, provided with in the stays connecting the plates 2.

rasante y the insulated contact piece 11, is mounted on the axis of oscillation 1/1 of the operating lever 4, and carries a metal cap 15 riveted on the said strip by the insulated contact-piece p 1l which, as already men` tioned, is connected to the armature conductor by a iexible wire 12.

This arrangement, like the foregoing gives the same solidity and ensures the Asame reliability of action whatever the shocks or jars to which the lamp may be exposed, this latter receiving the current :from the armature when the said lamp is screwed home in the cap 15 which, as in the preceding case, ensures body contact whether the casing be of conduct-ing or insulating material.

The conveyance of the current to theinsulated contact 11 offboth the systems of contacts described above is effected in the following manner:

The armature conductor is riveted or solderedon to the male member 16 of a push button vsecured on a plate 17 of insu-- .lating material mounted friction tight on thefhub 18 of the armature and is pressed lirmly4 against the plate 2 of the cage when the armature is mounted in, said cage, so as to prevent any angular displacement of said p ate 17 and of the push-buttonmember 16 which it carries. n y

The flexible wire 12 adapted to connect the armature with the insulated contact piece 11 is secured to the latter as 4'already described, and is of sufiicient thickness to prevent fracture through mechanical-stress at any time.

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' Its free end is riveted or 'soldered to the female member 16 that the connection is thus divided in two parts which can be easily and quickly disconnected and enable the whole to be easily taken to pieces and fitted up again very easily in case of repair to the lamp or changinthe armature.

oreover, the very small length to which is reduced the issue ofthe armature conductor and the application of the latter i against the insul ting plate 17 protects this conductor frgljny rupture, under the action of rep shocks.

The hub 19 of the magnet of the improved electro-mechanical lamp above described ed and even very violent may conveniently comprise a -ratchet and movable roller device in. which the said rollers 20 and the ratchet 21 integral` with the driving pinion 22 are `arranged Iwithin a `chamber 23 formed in the magnet hub and closed by a cover 24 directly beaded on the -said hub, this cover being erforated with a central opening through w the pinion 22.

The arrangement of this cover, which does away with any free space between its ich is engaged of the push button, so

los

`current from the electric outer edge and thatof the chamber 28, allows to exactly hold in place the rollers 20 Within the chamber, so that these rollers cannot take a Wrong position and that the ratchet device, which resists to the most violent and abnormal shocks, will never brake the gears, will not wedge and will always act what ever may be the speed imparted to the magnet.

It results therefrom that with a smaller muscular effort on the operating lever, a longer duration of light is obtained.

T e above constructional arrangements are of course given by Way of example only, and the forms, materials and dimensions of the various constituent arts may be varied Without departing there y from the principle of the invention.

Claims.

1. An electro-mechanical pocket lamp comprising a casinfr,-a cage secured in the 'said casing,-an e ectric generator of the ma net o type and its driving members carrie by the said cage,-a metal socket on an inclined face of the casing,-an electric bulb secured on the said socket,a resilient metal strip secured on the cage and in contact with the metal cap of the electric -bulb,-an insulated contact-piece on the said strip and in contact with the insulated contact-piece of the said bulb,-means generator to the insulated contact piece of the resilient metal strip,-means for ensuring the actuation of the .rotary magnet.

2. An electro-mechanical pocket lamp comprising a casing,-a cage secured in the said casing-an electric generator of the magneto type and its driving members carried by the said cage,-a metal socket on an inclined face of the casing,-an electric bulb secured on the said socket,a resilient metal strip bent at rightl angles and one of the branches of which is secured ony the cage, an insulated contact piece on the said branch and in contact with the insulated contactpier-e of the electric bulb, the other branch of the metal strip being in Contact with the metal cap of the head of the said bulb,a flexible wire connected at one of its ends to the insulated contact-piece of the metal strip, the female part of a push button being secured for conveying thev vloose on the shaft and having an end to the other end of the flexible wire and adapted to lit on the male member connected to the armature conductor and secured on an insulating plate mounted on the armature.

3. An electro-mechanical pocket lamp comprising a casing,a cage secured in the said casing,-an electric generator of the man'neto type an its driving members carried by the said cage,-a metal socket on an inclined face of the casing,-an electric bulb secured on the said socket,-a resilient metal strip mounted on the axis of the operating lever,an insulated contact-piece on the said strip,-a metal cap connected to the said strip by the insulated contact-piece, an electric bulb screwed in the said cap, the insulated contact-piece of the said bulb being' in contact with the insulated contactpiece of the resilient metal strip,-a iexible Wire connected at one of its ends to the insulated contact-piece of the metal strip, the female pai-tof a push button being secured to the other end of the flexible wire and adapted to lit onthe male member connected to the armature conductor and secured on an insulating plate mounted on the armature.

4. In an electro-mechanical pocket lamp, a rigid hub, an armature mounted on Said hub, an insulating plate rigid upon the hub, a bulb socket, and means providing part of the current connection between the armature and bulb socket comprising a iexible wire leading from the socket, and a snap fastener having one member at the end of said Wire and another member mounted on said plate, said member receiving one of the armature conductors.

5. In a device of the character described a fixed shaft, a multipolar magnet, a hubjournalled on the shaft carrying the magnet and having a chamber, a driving pinion extending into the chamber, a ratchet carried by said end, rollers dis osed between the ratchet and chamber Walll) to grip said Wall upon rotation of'the ratchet in one direction, a cover for the chamber retaining the rollers in place., and means to rotate the pinion.

The foregoing specification of my improvements in electro-mechanical lamps signed by me this 2nd day of March, 1922.

vPAUL BLOT.

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