US938238A - Electric attachment-plug. - Google Patents
Electric attachment-plug. Download PDFInfo
- Publication number
- US938238A US938238A US48430009A US1909484300A US938238A US 938238 A US938238 A US 938238A US 48430009 A US48430009 A US 48430009A US 1909484300 A US1909484300 A US 1909484300A US 938238 A US938238 A US 938238A
- Authority
- US
- United States
- Prior art keywords
- plug
- socket
- contact
- shell
- electric attachment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000002105 tongue Anatomy 0.000 description 8
- 239000011435 rock Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
Definitions
- a further object is to provide a plug of this character through which the circuit will be closed only when the plug is fully connected to the socket.
- Figure 1 is a side view of the plug, the parts being in the position in which the plug is not connected to the socket;
- Fig. 2 is a sectional view, the parts being in the position in which the plug is connected;
- Fig. 4c is a horizontal section on the line 4-4 of Fig. 3;
- Fig. 5 is a horizontal section on the line 55 of Fig. 2;
- Fig. 6 is a detail perspective view of the contact shell of the plug.
- 1 indicates a hlock of porcelain or other suitable insulating material, havlng a reduced cylindrical upper portion 2, surrounding which is a contact shell 3.
- Said shell is formed with a depending tongue 4, which extends into a hole 5 in the lower enlarged portion 6 of the block 1, and thus serves to hold the shell firmly on the reduced portion of the block.
- Said shell is formed of spring metal, and has cut therefrom three tongues 7, 8, at equal angular distances one from the other, of which the two tongues 7 are longer than the tongue 8, all of said tongues being united at their lower ends to the shell and normally projecting therefrom. Therefore they are adapted to contact with the inner surface of an electric lamp socket, and hold the plug in the socket by spring pressure.
- said block 1 Arranged vertically in a bearing-1n said block 1 is a shaft 9, the upper end of which carries a cam 10 extending through a lateral opening inthe side of the reduced portion 20 of the plug, which cam, when the shaft 9 is rocked, bears against the shorter tongue 8 and presses it outward, thus causing it to firmly engage the side of the lamp socket and hold the plug therein.
- a crank arm 11 extending through a slot 12 in the lower casing 13 of the plug, said crank arm being adapted, when the shaft 9 is rocked, to engage spring clips 14, which then, hold the crank arm in the position to which it has been rocked, in which position the plug is securedin the socket by means of the cam 10.
- the cord 15 passes to a binding screw 16, which is connected by a bolt 17 through the insulating block l'with the plate 18 in a recess 19 therein, to which plate is secured a spring 20 having a head 21 adapted to engage the central 1 contact of the electric lamp socket.
- the plug In use, the plug is inserted in the socket without twisting and the crank arm is again moved to the right so as to engage the sprin clips. The plug is then securely fastene in the socket. To disconnect the plug, the crank armis moved to the left, which breaks the circuit through the conducting wires, and relieves the pressure upon the cylindrical surface of the lamp socket, and the plug is then withdrawn.
- An attachment plug for lamp sockets comprising an insulatmg plug having a reduced portion, a contact shell around said reduced portion having a tongue out therefrom, a
- said tongue a spring arranged. centrally of my. hand in the presence of two subscribing said plug, a contact head carried thereby wltnesses.
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Description
4 s. W. ITO ELEGTBI G ATTACHMENT PLUG. AIIZLIOATION FILED MAR. 18,1909.
Patented Oct. 26,1909,
wasi WITNESSES lNVBNTOR ATTORNEY UNITED STATES PATENT OFFICE.
SEYKICHI W. I'I'O, OF SAN FRANCISCO, CALIFORNIA.
ELECTRIC ATTACHMENT-PLUG.
Specification of Letters Patent.
Patented Oct. 26, 1909.
Application filed March 18, 1909. Serial No. 484,300.
of twisting the pair of conducting .cords which are attached to it and are used to conduct current from the socket to its place of use.
A further object is to provide a plug of this character through which the circuit will be closed only when the plug is fully connected to the socket.
In the accompanying drawing, Figure 1 is a side view of the plug, the parts being in the position in which the plug is not connected to the socket; Fig. 2 is a sectional view, the parts being in the position in which the plug is connected; Fig. 3 is a sectional view-= on-line 33 of Fig. 2; Fig. 4c is a horizontal section on the line 4-4 of Fig. 3; Fig. 5 is a horizontal section on the line 55 of Fig. 2; Fig. 6 is a detail perspective view of the contact shell of the plug.
Referring to" the drawing, 1 indicates a hlock of porcelain or other suitable insulating material, havlng a reduced cylindrical upper portion 2, surrounding which is a contact shell 3. Said shell is formed with a depending tongue 4, which extends into a hole 5 in the lower enlarged portion 6 of the block 1, and thus serves to hold the shell firmly on the reduced portion of the block. Said shell is formed of spring metal, and has cut therefrom three tongues 7, 8, at equal angular distances one from the other, of which the two tongues 7 are longer than the tongue 8, all of said tongues being united at their lower ends to the shell and normally projecting therefrom. Therefore they are adapted to contact with the inner surface of an electric lamp socket, and hold the plug in the socket by spring pressure. Arranged vertically in a bearing-1n said block 1 is a shaft 9, the upper end of which carries a cam 10 extending through a lateral opening inthe side of the reduced portion 20 of the plug, which cam, when the shaft 9 is rocked, bears against the shorter tongue 8 and presses it outward, thus causing it to firmly engage the side of the lamp socket and hold the plug therein. Upon the lower end of said rock shaft is secured a crank arm 11, extending through a slot 12 in the lower casing 13 of the plug, said crank arm being adapted, when the shaft 9 is rocked, to engage spring clips 14, which then, hold the crank arm in the position to which it has been rocked, in which position the plug is securedin the socket by means of the cam 10.
Of the conducting cords, one, the cord 15, passes to a binding screw 16, which is connected by a bolt 17 through the insulating block l'with the plate 18 in a recess 19 therein, to which plate is secured a spring 20 having a head 21 adapted to engage the central 1 contact of the electric lamp socket. The
other conducting wire is connected by a binding screw 22 to the spring clips 14. The c1rcuit through this wire is therefore closed only when the crank arm 11 has been shifted to the position securing the plug in the socket, the current then passing through said spring clips 14, the crank arm 11, rock,
shaft 9, and cam 10, to the cylindrical contact shell 3, which is in contact with the cylindrical contact surface of the lamp socket.
In use, the plug is inserted in the socket without twisting and the crank arm is again moved to the right so as to engage the sprin clips. The plug is then securely fastene in the socket. To disconnect the plug, the crank armis moved to the left, which breaks the circuit through the conducting wires, and relieves the pressure upon the cylindrical surface of the lamp socket, and the plug is then withdrawn.
I claim':
An attachment plug for lamp sockets comprising an insulatmg plug having a reduced portion, a contact shell around said reduced portion having a tongue out therefrom, a
.Q I I w 938,288 I I i i X when the cam has been moved to so project In testimony whereof'I have hereunto set stantially as described. I
" said tongue, a spring arranged. centrally of my. hand in the presence of two subscribing said plug, a contact head carried thereby wltnesses.
- and two conductingvwires, one ofwhich Is velectrically connected to said. sprin and the Witnesses:
vSE YKICI-I I- we r120.
"-ps, sub= Dnnsols H IJLZFRANOIS M. RIGHT.
other is connected to said contact
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48430009A US938238A (en) | 1909-03-18 | 1909-03-18 | Electric attachment-plug. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48430009A US938238A (en) | 1909-03-18 | 1909-03-18 | Electric attachment-plug. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US938238A true US938238A (en) | 1909-10-26 |
Family
ID=3006657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US48430009A Expired - Lifetime US938238A (en) | 1909-03-18 | 1909-03-18 | Electric attachment-plug. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US938238A (en) |
-
1909
- 1909-03-18 US US48430009A patent/US938238A/en not_active Expired - Lifetime
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