US2571845A - Tube socket structure - Google Patents

Description

S. M. DEL CAMP TUBE SOCKET STRUCTURE Oct. 16, 1951 3 Sheets-Sheet 1 Filed June '7, 1947 S. M. DEL CAMP TUBE SOCKET STRUCTURE Oct. 16, 1951 3 Sheets-Sheet 2 Filed June 7, 1947 SQPiQN M. DEL CAMP,

Oct. 16, 1951 s. M. DEL CAMP TUBE SOCKET STRUCTURE 3 Sheets-Sheet 3 Filed June 7, 1947 Scwnom: M. DEL CAMP,

4 W m Elm! F W 032 4 FIGB'Z Patented Oct. 16, 1951 TUBE SOCKET STRUCTURE Scipione M. Del Camp, Maywood, Ill., assignor to Cinch Manufacturing Corporation, Chicago, 111., a corporation of Illinois Application June '7, 1947, Serial No. 753,251

2 Claims. 1

The present invention relates to electron tube sockets and more particularly to such sockets having built-in by-pass condensers.

The principal objects of my invention is to provide a socket of that type which may be quickly and simply connected to the circuit elements with which it is used.

Another object is to provide a tube socket having built-in by-pass condensers with means by which one terminal of each of said by-pass condensers may be simply and easily connected to a common terminal or to ground.

Another object is to provide a tube socket having means by which one or more terminals or elements may be easily and quickly connected to a common element or terminal such as to ground. For example, one or more of the contact terminals may be connected to a common conductor and one or more by-pass condensers associated with their respective contact terminals may also be connected to such common conductor.

In another 'aspect, it is an object of my invention to provide an electron tube socket having by-pass condensers associated with one or more contact receiving prongs and simple and con venient means for making connection to one terminal of said by-pass condensers.

In still another aspect, it is an object of my invention to provide an electron tube socket having a simple and effective means for making an external connection directly or indirectly through integral by-pass condensers to one or more of the prong-engaging contacts therein.

These and other aims and advantages of the invention will be apparent to those skilled in the art from a consideration of the following more detailed specification, reference being had to the accompanying drawings wherein:

Fig. 1 is a top plan view of one type of electron tube socket embodying my invention;

Fig. 2 is a bottom plan view of the socket of Fig. 1;

Fig. 3 is an enlarged perspective view of the by-pass condenser element for the socket of my invention;

Fig. 4 is a plan view of the mounting ring for the socket of Fig. 1;

Fig. 5 is a cross-sectional view of the mounting ring of Fig. 4 on line 5-5;

Fig. 6 is a plan view 01' the connector ring for the socket of Fig. 1;

Fig. '7 is a cross-sectional view of the connector ring of Fig. 6 on line 'I----!;

Fig. 8 is a cross-sectional view of Fig. 1 on line 2 8 showing a connection to a condenser in the contact holding bore of the socket;

Fig. 9 is a cross-sectional view of Fig. 1 on line 9 showing a contact holding bore without any connection to the supporting mount;

Fig. 10 is a cross-sectional view of Fig. 1 on line 10 showing a connection between the prongengaging contact and the supporting mount;

Fig. 11 is a cross-sectional view of Fig. 8 on line ll--H;

Fig. 12 is a cross-sectional view of Fig. 9 on line l2-|2;

Fig. 13 is a cross-sectional view of Fig. 10 on line 13-13;

Fig. 14 is a top plan view of a second type of electron tube socket embodying my invention;

Fig. 15 is a bottom plan view of the socket of Fig. 14;

Fig. 16 is a cross-sectional view on line l6 of the socket of Fig. 14 showing a pron contact in its bore;

Fig. 17 is a cross-sectional view on line H of the socket of Fig. 14 showing a pron contact with a condenser in a contact bore;

Fig. 18 is a cross-sectional view on line l8 of the socket of Fig. 14 showing a prong contact with a condenser in a contact bore with an external connection;

Fig. 19 is a cross-sectional view on line 19 of the socket of Fig. 14 showing a, prong contact in an enlarged bore together with the connecting strip;

Fig. 20 is a side view of the connector element used in the socket of Fig. 14 shown prior to insertion in the socket;

Fig. 21 is a top view of the connector of Fig. 20;

Fig. 22 is a cross-sectional view of the connector on line 22-22 of Fig. 21;

Fig. 23 is a top plan view of a third type of socket embodying my invention;

Fig. 24 is a bottom plan view of the socket of Fig. 23;

Fig. 25 is a side view of the socket of Fig. 23;

Fig. 26 is a cross-sectional view of one prongreceiving socket showing one type of connection;

Fig. 27 is a cross-sectional view of a second prong-receiving socket showing a second type of connection;

Fig. 28 is a cross-sectional view of a. third prong-receiving socket showing a third type of connection;

Fig. 29 is a. cross-sectional view of a fourth prong-receiving socket showing a fourth type of connection;

3 Fig. 30 is a sectional view on line 303ll of Fig. 26;

Fig. 31 is a sectional view on line 3l3l of Fig. 27;

Fig. 32 is a sectional view on line 3232 of Fig. 28; and.

Fig. 33 is a sectional view on line 3333 of Fig. 29.

One type of electron tube socket embodying my invention is shown in the drawing, Figs. 1 to 13 inclusive. This socket comprises a socket body 1 preferably molded of some plastic insulating compound, having, an annular rim 2 near the upper face and a central aperture 3 passing axially through the body I. The upper face of the body I has radially disposed prong-receiving apertures 4 communicating with contact bores 5. In the bores are disposed prongengaging contacts 6 having connecting terminal portions 7 extending-through lower face of the body 1 and positioning extensions 8 at their upper ends. Slotted recesses 9 extend from the rim 2 to the lower face of the body I on the outside peripheral surface of the body I and are positioned parallel and adjacent to the bores 5.

Certain of the bores 5 may be large in diameter than the others as shown in Figs. 8 and 10. As shown in Fig. 8 a bypass condenser element l may be inserted in the enlarged bore 5. This element is preferably composed of a tubular insulator H which may be made of a ceramicv material having a conducting coatin [2 on the inside surface contacting the prong-engaging contact 6 and another conducting coating 13 on the outside surface.

The prong-engaging contact 6 comprises a resilient split tubular portion for engaging the inner conducting coating 12 of the condenser element I with a terminal portion 1 extending from one end of the tubular portion and converging elements extending from the same end and spaced around the tubular portion for engaging a contact prong at their free ends and for guiding the contact into the condenser element as well as engaging the inner coating of the condenser element adjacent the tubular portion. Positioning extensions 8 are disposed at the opposite end of the tubular portion.

A conducting ring member I4 having inwardly extending resilient flanges 15 corresponding to the slotted recesses 9 is fitted over the body and clamped to the lower face of the rim 2 by a conducting supporting mount l6 which surrounds the body I at the rim 2 and has flanges l'i seat- I ed in recesses 18 in the upper face of the rim 2, an annular flange Il engaging the lower face of the rim 2 and opposed outwardly extending flanges 19 with apertures 20 to receive mounting fasteners.

The resilient flanges 15 press into the adjacent slotted recesses 9. As. shown in Figs. 8 and 11 where the bore 5 is enlarged so that they intersect, the resilient flange engages and makes an electrical contact with the outside coating [3 of the condenser element l0. Where the bore 5 is not enlarged, then as shown'in Figs. 9 and 12, the resilient flange l5 rests upon a portion of the insulating body I of the socket. As shown in Figs. and 13'where the bore 5 may be enlarged as in Fig. 8 but where the condenser 'element I0 is not located in the bore 5, or where the slotted recess 9 cuts into the bore 5, theresilient flange l5 presses through therecess'e and engages contact 6. 1

As a result of the construction shown and described above, the ring member I4 may act as a connector linking the outside coatings l3 of any of the condenser elements Ill disposed in enlarged bores 5 as illustrated in Figs. 8 and 11 and any of the contacts 6 in bores 5 intersected by recesses 9 as shown in Fig. 10 and may be connected to an' electrical ground or other connection through the mount [6.

Another type of electron tube socket embodying my invention is shown in Figs. 14 to 22 inclusive having corresponding parts numbered the same as those of Figs. 1 to 13 inclusive. This type of tube socket is shown with a prong-holding member 2| secured in the central aperture 3. As in the previously described type, the molded socket body i has an annular rim 2, prongreceiving apertures 4, and contact bores 5, containing prong-engaging contacts 6 with terminal portions 1 extending through the lower face and positioning ears 8. In this type where the bores 5 may be enlarged, there may be a slotlike aperture 22 extending from the top face to the bottom of the bore 5 and opening on one side for its whole length into the bore 5 and aperture 4 being positioned adjacent the peripheral surface of the body I. The side edges of the aperture 22 undercut the bore 5.

A contact strip 23 having opposed projections 25 on its edges near one end 25 which end to gether with the projections 24 are each bent forward at an angle from th plane of the remainder of the contact. The strip 23 is inserted into the slotted aperture 22 with the forward bendin projections 24 engaging the edges of aperture where they undercut the bore 5, its longer end 26 extending through an aperture 21 in the lower face of the body I andits shorter end 25 projecting angularly into the bore 5 so as to engage and make electrical contact with whatever may be disposed in said bore, as for ex-' ample, the outer coating l3 of a condenser element NJ as shown in Figs. 17 and 18 or the prong-en aging contact 6 as shown in Fig. 19. The longer end '26 may be formed to follow the outer surface of the body I parallel to the bore 5 with its tip being secured against the lower face of the rim 2 by the conducting supporting mount it as shown in Figs. 17 and 19. Or as shown in Fig. 18 the longer end may be bent to extending outwardly on a radius from the axis of the body so as to form a connecting terminal to which a wire may be soldered.

As with the first type of socket, the different constructions shown in Figs. 16, 1'7, 18, and 19 may be used as desired in accordance With the requirements-of the circuit in which the tube socket is used. The mount is will serve as common connector linking through such contact strips 23 as are secured thereby any of the outside coatings IE of the condenser elements 59 and prong-engaging contacts 6 as such strips contact.

The second type of socket may use a prongengaging contact 6 having a resilient split tubular portion for engaging the inner conducting coating of the condenser element with a terminal portion 1 extending from one end of the tubular portion and converging elements extending from the opposite end-of the-tubular portion for engaging a contact prengandhaving positioning extensions 8 atthe outer ends of the converging elements.

A third type of socket adapted particularly for-miniature electron tubes and embodying my invention is shown in Figs. 23 to 33 inclusive. Parts in the drawing corresponding to similar parts of the other types bear the same reference numbers. This third type has a socket body I with a contact retaining cap 28 underlying the lower face of the body I and having an upwardly extending rim 29 encircling the lower part of the body I. A tubular rivet member 30 secures the cap 28 to the body I through the central aperture 3 of the body and the central aperture 3| of the cap 28. As in the previously described types, the socket body has an annular rim 2, prong-receiving apertures 4, contact bores 5 containing prong-engaging contacts 6. However, in this third type the contact bores 5 extend through the lower face of the body I and the prong-engaging contacts 6 have terminal portions I extending through the cap 28. The contact 6 may comprise a pair of integral tubular portions in axial alignment with the terminal portion I extending from the outer end of the lower tubular portion and with inwardly converging and then outwardly diverging contact prong-engaging elements extending from the opposite outer end of the upper tubular member. Integral resilient contact elements may extend from the inner end of the lower tubular portion with convex portions at their free ends displaced radially outwardly for engaging the inner surface of the condenser element I2. In this type, where the bore 5 may be enlarged, there may be a slotted recess 32 along the side 01 the bore 5 adjacent the periphery of the body opening into a peripheral notch 33 around the edge of the lower face of the body I.

A resilient contact strip 34 has a contact portion 35 in the slotted recess 32 and a terminal portion 36 lapping over the lower peripheral edge of the body between it and the retainer cap 28. As in the other types of socket the contact portion 35 normally extends angularly in the bore 5 and will contact the outside coating I3 of a condenser element III if placed therein or will contact the prong-engaging contact 6 if no condenser element is in the bore.

The terminal portion 36 may be secured against the lower face of the rim 2 by the conducting supporting mount as shown in Figs. 26 and 29 or it may be bent away from the peripheral surface of the body I for ease in making a separate connection thereto as shown in Fig. 27. As with the other types described above, the different types of construction shown in Figs. 26, 27, 28, and 29 may be used to suit the requirements of the particular tube and the circuit to be used with the socket, the mount I6 serving as a conductor linking through such contact strips 34 as are secured thereby any of the condensers I0 and prong-engaging contacts 6 as such strips contact.

Although I have illustrated preferred embodiments of my invention, I do not wish to be limited thereby because the scope of my invention is best defined by the following claims.

I claim:

1. In a socket structure for use with a device having contact prongs, a socket body of insulating material having a substantially cylindrical prong-receiving bore extending from one face for a substantial distance into the socket body, a substantially rectangular slot-like aperture tangentially intersecting said bore and extending from said one face of the socket body to the end of said bore and providing an opening into said bore along the line of the tangential intersection extending from said one face to the base of the bore and providing opposing grooves adjacent the opening, and a passage from the base of said aperture extending through the opposite face of the socket body, whereby an elongated contact element with a terminal portion at one end, an angularly disposed contact portion at the opposite end, and opposed lateral wing extensions adjacent said contact portion may be inserted into said aperture with the terminal portion extending through said passage, the wing extensions disposed in said grooves, and the contact portion extending at an angle through said opening in said bore.

2. In a socket structure for use with a device having contact prongs, a socket body of insulating material having a substantially cylindrical prong-receiving bore extending from one face for a substantial distance into the socket body, a substantially rectangular slot-like aperture tangentially intersecting said bore and extending from said one face of the socket body to the base of said bore and providing an opening into said bore along the line of the tangential intersection extending from said one face to the base of the bore and providing opposing grooves adjacent the opening, and a passage from the base of said aperture extending through the opposite face of the socket body, and an elongated contact element with a terminal portion at one end extending through said passage, a contact portion at the other end extending at an angle through said opening into said bore, and opposed lateral wings with their outer ends secured in said grooves adjacent the base of the aperture.

SCIPIONE M. DEL CAMP.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,696,406 Masley et al Dec. 25, 1928 2,291,808 Henning Aug. 4, 1942 2,294,880 Alden Sept. 8, 1942 2,421,780 Frear June 10, 1947 2,455,300 Franklin Nov. 30, 1948 2,461,658 Roup Feb. 15, 1949 FOREIGN PATENTS Number Country Date 245,950 England Jan. 21, 1926 559,562 England Feb. 24, 1944

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