US1115654A - Attachment-plug. - Google Patents

Description

F. 0. DE REAMBR. ATTACHMENT PLUG.

APPLICATION FILED APR. 15, 1913.

Patented Nov. 3, 1914.

Inventor Frank C. De Reamer,

Witnesses Hls fittorneu.

' attachment plugs designed burrs STATES PATENT orrion.

FRANK C. DE BEAMER, 0F SCHENECTADY, NEW YORK, ASSIGN OR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ATTACHMENT-PLUG.

To all whom it man concern:

Be it known that I, RANK C. DE Rename, a citizen of the United States, residingat Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements inAttachmenttion. 1

My invention relates to connectors for electric conductors, and more articularly to I or connecting the feed wires of small electrical apparatus,

Ilugs, of which the following is a specifica- .such as fan motors, heaters, portable lamps,

etc., to a service circuit by the mere insertion of the plug into a socket or receptacle such asis commonly used for the ordinary incaudescent lamp.

Theobje'ct of my invention is to provide a durable,.simple, cheap and compact device of this character; I

In-carryingoutmy invention, I provide a socket plug member and a separable wire engaging member. -I provide each of these members with contacts or contact clips adapted to engage those of'the other, and I also provide the socket plug member with means for making connection between its clips and the contact means of the lamp socket, such as a center contact and a contact shell to one of which each clip is electrically connected. In the construction of the socket plug member, I arrange within the contact shell an insulating base part or member having in it openings for the contact clips, and

I employ an insulating disk part or member that separates the shell and center contacts and helps in securingthese contacts and the contact clips in the properrelative positions. Rapid assembling of the parts of theplug member in the factory can be facilitated b) securing some of them to the insulating disk independently of the insulating'base before it and the insulating base are'put together. This and other advantages are best realized when disk, shell, center contact, and contact 'clip's all form a unitary structure with the clips seated or mounted along with the shell and within the same on the opposite sideof the disk from the center contact. 4

For a fuller understanding of my invention, reference may be had to the accom panying drawing, in which.

Figure 1 is aside elevation of the cap member; Fig. 2 is a longitudinal section of the plug member embodyinginy invention; Fig. .3 1s a longitudinal section of the insu- Spe'cification of Letters Patent.

Application filed April 15, 1913. Serial No. 761,208.

Patented Nov. 3, 1914..

lating base which forms a. part of the attachment plug; Fig. 4c is a side elevation, partially in 'sectionfof the current carrying part of the plug member; and Fig. 5

1s a plan corresponding to Fig. 1.

In describingthe'parts of the attachment plug inFig. 2, I shall, for convenience, describe them in the relations there shown, although it will, of course, be understood that, in practice, the plug will be used in any position.

Referring to the drawing, and first to Figs. 2, 4 and 5, 1 is a clamping sleeve provided at its lower end witl1 a flange 2 and preferably formed immediately above the flange with a conical portion 3. A substantially disk-shaped insulating member T4 is seated upon the flange 2 and is provided wlth a central opening to receive the sleeve 1 and with shallow recesses 5 on the upper ,side thereof for a pur ose hereafter eX- plained. A screx'v-threa ed contact shell 6, closed at the bottom by a transverse portion 7, is seated upon the, member 4 and is provided with a large central opening through which the sleeve 1 extends out of contact therewith. The transverse portion? is pro vided with downwardly extending protuberances which engage the openings 5 of the insulating member 4a and prevent relative is dis o'sed opposite to contact 10, is alsoprovi ed with a .transverse arm 13 having an opening to closely receive the sleeve 1. The contact clips 10 and 12 are separated byan insulating disk 14 disposed between thetransverse arms 11 and 13 of the clips and having a contracted portion extending through the opening of the transverse arm 11. The contact clip 10 is thus electrically connected to the shell (S while the clip 12 is connected to sleeve 1. The members forming the structure shown in Fig. 4 are held together by the clamping sleeve 1 which is provided at its upper end with a flange 16 i 1 vided witha central opening 21 for the rewhich may be formed by a punch press in a well understood manner. I will, for convenience, hereafter refer to this structure as a connection unit. 1 I

An insulating base 17 is exteriorly divided by shoulders 18 and 19 into cylindrical sections of different diameters, the lower section being of such a diameter as to be received in the screw-threaded shell, 6.

The base is interiorly provided with two longitudinally extending openings 20 which are adapted to receive the contact fingers l0 and 12. The insulating base is also proception of a'member which'secures the unit shown in Fig. 4 to the base. The bottom of the base is cored out centrally at 22, so that the bottom of the base may pass over the insulating disk 14, and the top of the' insulating base is cored out at 23. The bottom of the base is provided with recesses 24 (shown in dotted lines in Fig. 3), within which the upwardly extending protuberances 9 of" the transverse portion 7 of the shell are received. A nut 25 is seated in vided with projecting contact fingers 29 and- 30 reversely bent or curved to the fingers 10 and 12, and with which they are adaptedto engage and interlock. Conductors 31 are electrically connected to the contact fin- .gers 29 and 30 and in turn lead to any suitable electrical apparatus.

A plug attachment made in accordance with my invention is easily assembled and is compact and shorter than the ordinary plug attachment. and it possesses the added advantage that the loosening of the screw which clamps the connector to the insulating base does not affect the contacts;

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means within the scope of my claims.

What I claim as new and desire to secure Letters Patent of the United States,

4 1. A connection unit for an attachment plug comprising an insulating member and a contact shell extending upward therefrom, a center contact at the lower side of 7 said insulating member, a pair of contact fingers 111 said shell having overlapplng 2. A connection unit for an attachment plug comprising an insulating member provided with a central opening, an upwardly extendin shell closed at one end seated upon sai insulating member and having in its end closure an opening above the opening in said insulating member, a pair of contact clips having transversely disposed overlapping arms provided with openings above said opening in said insulating member, an insulating member interposed between the overlapping portions of said clips and a conductive clamping sleeve passing through the. various openings and through said latter insulating members and secured at one end to said insulating member and at-the other end to the upper one of the two clips.

3. Ina connection unit for an attachmentplug, a conductive sleeve provided at one end with a'fiange, an insulating member .surrounding said sleeve and seated upon said flange, a contact shell closed at its lower end seated uponsaid insulating member, a pair of contact clips provided with transversely disposed overlapping arms and having openings to receive said sleeve, an insulating member interposed between the arms of said contact clips, one of said clips being electrically connected to said shell and the other to said sleeve, said sleeve being secured to the upper contact clip and the various members thus secured together. I 4. In a connection unit for anattachment plug, a conductive sleeve provided at one end with a flange, an insulating member surrounding said sleeve and seated upon said flange, a contact shell closed at the lower end seated upon said insulating member and provided with protuberances which are received in corresponding recesses in the insulating member, a pair of contact clips each provided with transversely disposed arms and having openings to receive said sleeve, an insulating member located between the two contact clips, one of said clipsbeing electrically connected to said shell and the other to said sleeve, said sleeve being secured to the upper contact clip and the various members thus secured together to form a unit.

5. In a connection unit for an attachment plug, an insulating member provided with a central opening, a screw-threaded metallic shell seated thereon and closed at one end and havingan opening eoncentric with the opening in saidinsn-latingahember, a pair of contact clips h g "transtensely disposed arms whichare'provided with openings, one of the clips'having an opening larger than theopenin'g in. the insulating member, an insulating-disk located betwceni the two trans- ,xjters'elydisposed arms and having an opening therethrough and a contracted portion which is received within the opening of the lower contact clip, and a conductive clamping sleeve passing througlf theg various openings andiha/ving flanges at both ends, one of said flanges engaging insulating member and the other the: d pper" contact clip. and all the parts being tli'li's' secured together.

(3. In a separable electrical connector, the

' combination of an insulating member, a center contact and the other to said contact shell.

7. In a separable electrical connector, the

I combination of a contact shell having a transverse bottom portion at its lower end, an insulating disk member below said contact shell, an insulating base in said contact shell having two openings extending longi' tudinally theretlwouglnsaid disk member and said base being secured together with said transverse portion of said shell betweenv them, a contact clip in one of said openings secured to said disk member independently of said base, a center contact below said disk member electrically connected to said contact clip, and a contact clip in the other of said openings secured against and electrically connected to said transverse portion of paid contact shell also independently of said ase.

8. 'In' a separable electric connector, an insulating member, a center contact located below the same and a contact shell closed at the lower end extending upwardly therefrom,the transverse portionof said shell being provided with upwardly and downwardly extending protuberances, a pair of contact clips mounted within the shell, one of the: clips being electrically connected to the centercontact and the other to the contact shell, and an insulating base with its lower end in saidlcontact shell having two openings extending longitudinally thereof which accommodate said contact clips, the lower face of-said insulating base and the upper face of the insulating member being provided with recesses in which the upwardly and the downwardly extending protuberancesof the contact shell are respectively engaged,

9. In an electric connector, the combination of an insulating member having a center contact at its lower side, an insulating base secured to said member having therein a pair of longitudinally extending openings, and a screw threaded contact shell and a pair of contact clips secured to said insulating member independently of said base and extending upwardly from said member around said base and within said openings in said base respectively, one of said contact f clips being electrically connected to said contact shell and the other to said center contact.

my hand this 14th day of April, 1913.

' FRANK C. DE REAMER.

W'itnesses:

HELEN ORFORD, BENJAMIN B. HULL.

In witness whereof, I have hereunto'set v

Images