US1689348A - Combined jack and selecting switch - Google Patents

Description

Oct. 30, 1928.

J. J. KUHN COMBINED JACK AND SELECTING SWITCH Filed Dec. 29, 1924 Patented Oct. 30, 1928.

' vUNITED STATES PATENT OFFICE.

JOHN J. KUHN, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO WESTERN-ELECTRIC COM- PANY, INCORPORATED, F NEW YORK, N. Y., A CORPORATION OF NEW YORK.

COMBINED JACK ANI) SELECTING SWITCH.

Application led December 29, 1924. Serial No. 758,528.

This invention relates to switching devices foruse particularly'in central radio receiving stations. v

The object of the invention is to provide a A compact and inexpensive switching unit which may be used to connect a piece of apparatus connected to a plug to any one of a large numbery of different lines.

A structure embodying the invention com- Hl prises a jack sleeve-rotatably mounted in an aperture in a panel, the sleeve carrying a number of brushes which when the sleeve is rotated successively engage a row of contacts arranged around the aperture, these contacts .5 being connected to the different lines. A spring insulatingly mounted on the sleeve 'directly behind the aperture is connected to one of the brushes and is engaged by the tip of the plug when inserted in the sleeve, the 20 sleeve of the plug engaging the rotatable jack sleeve which latter is metallically connected to the other brush. The front of the jack sleeve carries a dial to indicate the position of the brushes.

Referring now to the drawings:

Fig. 1 is a side view in cross-section of the jack and selecting switch of this invention. Fig. 2 is a rear plan vieiv showing the arrangement of the contacts witlrrespect to the springs. f

Fig. 3 illustrates an indicator for changing` the position of the contact springs. Fig. 4 is a modification of Fig. 1. Fig. 5 is a rear View of Fig. 4l. A panel of insulating material, preferilar material are fastened together and each is provided with a central aperture 12 and 13 through which a tubular metallic sleeve 14 extends. The sleeve 14- is provided with an integral flange 15 which limits thc inward movement of saidl sleeve. A Washer 16 and a nut 17 are arranged on the sleeve 14 to prevent rotation thereof. A rotatable metal sleeve 18 of such a diameter to slida-bly lit in sleeve 11i isprovided with a rectangular apertured metal block 19 which is rigidly fastened to the Arotatable sleeve 18 by means of set screw 20. Ak plurality of contactstuds 21 are arranged .in a circle aboutthe axis of the rotatable sleeve 18`and fastened to the rear of the sub-panel 11 by means of screws 22. A resilient spring 23 is fastened to the upper surface of metal block 19.by means of screw 24, and bent at right angles to its supportably phenol libre, and asub-'panel 11 of sim-l ing plane,.whereby the free end of the springl is adapted to engage the radial contacts 21. A cooperating resilient spring 25 is provided with an extending portion 26 bent to form a loop with the free end thereof in the plane of the aperture in the rotatable sleeve 18. The spring 25 is insulatingly supported from ,the lower surface of the metal lblock 19 by insulating washers 27 and 28 and screws 29 and also engages the contacts 21. The rela-A tive position of the springs 23 and 25 are diametrically opposite and adapted to sequentially engage the contacts of each semicircle.

An apertured indicating pointer 30 of any desired material is attached to the end of the rotatable sleeve 18 adjacent to the panel 10. Thel pointer is provided with a knob 32 for turning the same.v This arrangement provides va rotatable switch in which a telephone plug 33 may be inserted to connect a single line with a large number of different lines by means of the circuit established between the plug sleeve 34 and the rotatable sleeve 18 through spring 23, and the tip 35 of plug 33 and spring 25.

In the modification disclosed inFig. 4, the contacts 21 are arranged in two concentric circles around the axis of the rotatable sleeve 18 and the resilient springs 23 and 25 are support-ed from the lower surface Iof the metal block 19. The resilient spring v23is mechanically connected to metal block 19 and engages the inner row'of contacts 21. The spring 25 is insulatedly supported on said metal block and engages the outer row of contact 21. This allows a greater number of contacts/to be placed on the panel, thereby obtaining access to a greater number of lines. x

lt is, of course, understood that the invention is not limited to the specific device as shownand that various modifications may be made without departing from the scope of the invention as expressed in the appended claims.

What is claimed is:

1. A combined jack and selecting switch comprising a panel having an aperture therein., terminals arranged on said panel around said aperture, a metallic' sleeve rotatably mounted in said aperture, a number of brushes 105 arranged to rotate with said sleeve and to successively engage said terminals when said sleeve is rotated, a contact located behind said aperture, said sleeve Aand contact providing circuit terminals for a cooperating plug. 11g

2. A combined jack and selecting switch comprising a panel having an aperture therein, terminals arranged on said panel around said aperture, a metallic sleeve rotatably mounted in said aperture, a pair of brushes rotating with said sleeve one metallically connected thereto and one insulatedly mounted thereon, and a contact located behind said aperture and metallically connected to said latter brush, said sleeve and contact providing circuit terminals for a cooperating plug.

3. In combination, a switch comprising a panel-having an aperture, a. plurality of contacts on said panel around said aperture, a

rotatable metallic tubular member positioned in said aperture, brushes supported on said member for engagingvsaid contacts, one of said brushes being insulated from said member and having a bent portion, the-free end of said bent portion being located behind said aperture, said member and latter brush providing circuit terminals for a cooperating plug, and means on said member for changing the position of said brushes.

4. In combination, a switch comprising a panel having an aperture, a plurality of contacts on said panel around said aperture, `a metallic sleeve ixed ,in said aperture, a rotatable tubular metallic member positioned in said sleeve, brushes mounted on said rotatable tubular member for engaging said contacts7 lone of said brushes'being insulated from said member and having a bent portion, the free end of said bent portion being located behind said aperture, said sleeve and latter' brush providing circuit terminals for a cooperating plug, and means on said tubular member for changing the position of said brushes.

5. In combination, a centrally apertured panel and sub-panel, a plurality of contacts mounted on said sub-panel around said aper ture, a metallic sleeve Jfastened in said subpanel, a rotatable metallic tubular member positioned in said sleeve, brushes mounted on said rotatable tubular member and engaging said contacts, one of said brushes being insulated iroi'n said member and having a bent portion, the free end of said bent portion being located behind said aperture, said sleeve and latter brush providing circuit terminals for a cooperating plug, means on said tubular member for changing the position of said brushes and an indicator on said tubular member.

In Witness whereof, I hereunto subscribe my name this 23rd day of December, A. D., 1924:.

JOHN J. KUHN.

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