US 2414957 A
Description (OCR text may contain errors)
Jan. 28, 1947. LARRABURE 5, 2,414,957
corms OR THE LIKE SWIVEL CONNECTOR FOR ELECTRIC CABLES,
Filed Oct. 29, 1943- 2 Sheets-Sheet l INVENTOR. Mar 2,0 Zarrabwre, ,5.
AT ORNEYS Jan. 28, 1947. M. LARRABURE 5. 2,414,957
SWIVEL CONNECTOR FOR ELECTRIC CABLES, CORDS OR THE LIKE Filed Oct. 29, 1945 2 Sheets-Sheet 2 2 Nu m 2 M 9 0. W5 A, 6 v 2 2 .7 ma m 1 T g 2 o Q m w M400 5 a m M w J fi k-a M Patented Jan. 28, 1947 SWIVEL CONNECTOR FOR ELECTRIC CABLES, CORDS, OR THE LIKE Mario Larrabure S., Lima, Peru Application October 29, 1943, Serial No. 508,146
The invention relates to an electric connector and more especially to a swivel connector for electric cables, cords or the like.
The primary object of the invention is the provision of a connector of this character wherein the same is associated with an electric cable, cord or the like, particularly those serving as electric leads for electric lamps, irons, vacuum cleaners, telephone sets or any other electrically operated equipment, so that the wearing of the cable, cord or the like resultant from twisting thereof can be entirely avoided and in this way eliminating short circuits as is common in electrical devices which must often be handled without regard to the twisted condition of the cable, cord or the like.
Another object of the invention is the provision of a connector of this character wherein the construction thereof is novel in its entirety and its parts are readily accessible so as to correct any irregularity in the working thereof and for replacement of worn parts.
A further object of the invention is the provision of a connector of this character which is simple in its construction, thoroughly reliable and effective in operation, readily adaptable to electric cables, cords or the like as employed in electrical devices for the working thereof and also inexpensive to manufacture and install.
With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described in detail, illustrated in the accompanying drawings, which disclose the preferred embodiment of the invention and pointed out in the claims hereunto appended.
In the accompanying drawings:
Figure 1 is a perspective view of a combined telephone transmitter and receiver showing in elevation the connector constructed in accordance with the invention associated therewith.
Figure 2 is an enlarged elevation of said connector.
Figure 3 is a plan view of the same.
Figure 4 is a view in plan reversed to that of Figure 3 and partly broken away.
Figure 5 is an enlarged vertical sectional view through the connector.
Figure 6 is an elevation of certain working parts of the connector.
Figure '7 is an enlarged fragmentary sectional view with parts in elevation showing in detail one of the electric wire assemblies of the device.
Figure 8 is an exploded side elevation of companion follower pieces employed in the device.
Similar reference characters indicate corresponding parts throughout the several views in the drawings,
Referring to the drawings in detail, particularly Figure l, A designates generally a combined receiver and transmitter of a telephone set, it being illustratedmerely for disclosing the manner of use of the swivel connector B constituting the present invention and hereinafter fully described. It is to be understood that the swivel connector B can be employed with electric cords for other electrical devices, such as electric'vacuum cleaners, electric irons, as well as with the detachable electric plugs generally associated therewith.
The connector B comprises a main body Iii preferably made from Bakelite and has a permanently closed end H for a central socket or bore 12 which opens through the opposite end of said body ID. This body In having the open end for the bore or socket I2 has rotatably fitted thereon a turning head 13 it containing a ball raceway [4 for bearing balls l5 which contact with the rim portion l6 of the body [0 so that rotary movement of the head l3 with smoothness and with minimum friction will be had relative to the body It for the swivel activity of the connector. This head l3 as shown in Figure 1 of the drawings is disposed next to the combined receiver and transmitter A at the point disclosed. It is preferable that the head l3 be insulated in any suitable manner and is concentrically disposed about an electric connection involving a central current conductor 11, an intermediate current conductor [8 and an outer current conductor 19, the conductor 11 being in the form of a rod while the conductors l8 and [9 are of tubiform. These conductors are suitably insulated from each other by insulating coverings 20. The conductors H, is and I9 in their grouped relation to each other are extended into the socket or bore I2 in the body I0, as is clearly shown in Figure 5 of the drawings. The outer conductor I9 is insulated from the head l3 which is preferably made from insulating material, although it may be otherwise constructed for insulating purposes. These conductors [1, I8 and I9, through terminal parts 2| are electrically associated with the said combined receiver and transmitter A interiorly thereof.
Fixed to the conductors ll, 18 and 19 are grooved rollers 22, 23 and 24, respectively, the grooves 25 therein form trackways for ball con- It should be apparent that in the use of the connector as heretofore described there is no possibility of the twisting of the cable, cord or the like 3| in the handling of the combined receiver and transmitter or other electrical device or appliance, as the said body If) is readily turnable with relation to the conductors I7, l8 and I9 in that the body Ill rotatably fits the head [3 therefor.
The loop 32 is anchoredabout the body iii exteriorly thereof by a circular band 36 and such loop 32 is swingingly associated with this band to permit tilting of the connector in the use thereof and the electrical device with which it is associated.
It is preferable to have the followers 2? and 23 as well as the spring 29 therebetween confined Within tubular casings 37 properly fitted within the body Ill. 7
It is also to be understood that the cable, cord or the like 3 I is of the usual or common insulator sheathing type.
What is claimed is:
1. A swivel connector for electric conductors for use with an electric appliance comprising a hollow insulating cylinder closed at one end, resiliently secured ball contacts in the cylinder extending into the open center thereof, concentric conductors insulated from each other and in the hollow cylinder and forming a rotatable assembly secured in fixed relation to the appliance, grooved contact rollers fixed on the upper ends of the conductorsengaging the respective ball contacts, a swivel head rotatably secured on and enclosing the open end of the cylinder and secured in supporting relation to the said assembly whereby the cylinder and contacts will be movable relative to the head and assembly.
. 2. A swivel connector for electric conductors for use with an electric" appliance comprising a hollow insulating cylinder closed at one end, resiliently secured ball contacts in the cylinder extending into the open center thereof, concentric conductors including a central rod and spaced insulated tubes terminating successively short of the adjacent inner conductor forming a rotatable assembly secured in fixed relation to the appliance and in the hollow cylinder, grooved contact rollers on the upper stepped ends of the conductors of the assembly engaging the respective ball contacts, a swivel head rotatably secured to and enclosing the open end of the cylinder and secured in supporting relation to the said assembly whereby the cylinder and contacts will be movable relative to the head and assembly.
MARIO LARRABURE s. V