US1162514A - Controlling apparatus for electrical switching systems. - Google Patents

Description

J. N. REYNOLDS.

I CONTROLLING APPARATUS FOR ELECTRICAL SWITCHING SYSTEMS.

APPLICATION FILED NOV. 4. I9l3.

2 $EETS-SHEET I.

//7ve/7/0/'.' fan N. Reyna/d8 Patented Nov. 30, 1915. Q Q' *3 es: Mas

W/fness J. N. REYNOLDS.

CONTROLLING APPARATUS FOR ELECTRICAL SWITCHING SYSTEMS.

' A?PLICAT|0N FILED NOV. 4. m3.

Patented Nov. 30, 1915.

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MA Jo/m /v m m/d8 mw by UNITED STATES Parana? oration.

JOHN NEWBERRY REYNOLDS, OF GREENWICH, CONNECTICUT, ASSIGNOB, TO WESTERN ELECTRIC COMPANY, OF NEW YORK, N. Y., .A. CORPORATION OF ILLINOIS.

CONTROLLING'APPABATUS FOR ELECTRICAL SWITCHING SYSTEMS.

Specification of Letters Patent. P3 5921 tQGNOV. 30, 1915.

Application filed November 4,1913. Serial No. 799,233.

To all whom it may concern:

Be it known that 1, JOHN Nnwnnnny REYNOLDS; a citizen of the United States, residing at Greenwich, in the county of Fair-field and State of Connecticut, have invented a new and useful Improvement in Controlling Apparatus for Electrical Switching Systems, of which the following is a full, clear, concise, and exact description.

This invention relates to key mechanism. and particularly to key sets for use with the controlling or sending mechanism of automatic 01 semi-automatic telephone sys tems.

The object of this invention is the provision of a key set which may be used with a plurality of senders with which it would be alternately associated in the ordinary operation of the keys. i

In the drawings Figure 1 is a plan view of a group of keys with parts broken away; Fig. is a side view thereof; Fig. 3 is a section on the line 3-3 of Fig. 2; Fig. at is a view similar to Fig. 8 showing the key depressed; Fig. '5 is a perspective view of a portion of the key set with parts broken away; Fig. 6 is a fragmentary elevation showing ,the releasing means for the shift bar; Fig. 7 is a, view similar to Fig. 6 showing the key plunger depressed; Figs, 8 and 9 are plan views of the operating cam in different positions; and Fig. 10 is a cross sectional view of a modification of the device.

In the application of this invention, a

plurality of groups of ten digits keys each on one side of the row of keys would be and vice versa.

thereunder and 3 a plurality of key plungeis i provided with the buttons or heads 1. The plunger-s are longitudinally movable through the plate 1 and support 2 but are prevented from rotary movement by means of the spline Loosely mounted on each plunger between the fixed collars 6 and 7 is a spring operating member 8 of insulating material. The cam portion 9 of the member 8 extends slightly less than a semicircle about the circumference thereof. Insulatively secured to the member 2 on opposite sidcs of each plunger 3 are two pairs of springs 10, 11 and 12, 13 respectively. These pairs of contacts will be connected to diit'erent sending apparatus and when the cam 9 occupies one position, spring 10 will be caused to engage spring 11, and when said cam is rotated in a clockwise direction a small faction of a revolution,said cam will be moved from a position to engage spring 10 and the depression of a key will then cause a spring 12 to engage spring 13. The means for rotating the cam 9 will be hereinafter described.

Springs 10 and 12 are provided with arma'tures 11 and 15 respectively. Extending parallel to each series of armatures 11 and 15 is a pair of plates 16 and 17 of magnetic material which form the pole pieces for the magnets 18, a plurality of which are mountel between the plates 16 and 17. These magnets serve to retain any of the armatures '11 and 15 brought into engagement therewith. Thus, when a spring 10 or 12 is forced into engagement with its cooperating spring 11 or 13, its armature 11 or 15 will simultaneously engage the plates 16 and 17 and will be held in engagement therewith by the magnetic attraction exerted by magnets 18 until the said magnet is de'e'nergized.

We will now describe the means whereby the operating cams 9 are automatically r0 tated on the plunger 3 to shift them from operative relation to the springs 10, 11 and into operative relation to the springs 12, 13 Slidably mounted, slightly above the upper faces of the several cams, is a shift bar 19 provided with a plurality of notches 20, e2 ch of which is adapted to re;- ceive a pm 21 proJectmg upwardly from" the upper surface of a cam member 9. Jr

spring 22 is provided whereby the bar 19 is normally drawn to the right as viewed in" 119 Figs. 1, 2 and 5. Mounted adjacent to the left end of the bar, as viewed in said figures,

' wise direction, as viewed in Fig. v1, by means pf; the engagement of their pins 21 with the "notches in said bar.

i fhen the bar 19 is moved to the left, it is retained in this position by means of the pawl 27 engaging the notch in said bar. This pawl is pivoted at 29 and is normally held in operative position by means of a spring 30. Pivotally secured to one endof the pawl 27 is a link 31, the opposite end of which is pivotally secured to the lug 32 on the rocking plate 33 (see Figs, 3 and 5). The rocking plate 33 has at each end thereof, an upwardly projecting lug 34 which is pivoted to a portion of the key set framework as at 35.

Mounted in a vertical position on the framework, slightly above the inner edge of the rocking plate 33, is a plate 35 with an offset portion 37, having formed therein the notches or grooves 38. Extending upwardly from each cam 9, adjacent to the plate 36, is a pan 39 which .ishent at the upper end thereof to form the outwardly extending release finger 40. Then the plate 19 is moved.

to the right and the cams 9 are in a position to engage the springs 10, the release finger 40 will be in a position so that, upon the depression of a key, it will pass idly by the plates 36 and 33 without engagement therewith. A

Insulatively mounted upon the supporting member 2, adjacent to each pair of springs 12, 13, is an additional pair of springs 41, 42 Fixed to the side of the rotatable member 8 and projecting downwardly therefrom is a pin 43 having a rightangularly extending portion 44 (see Figs. 4, 8 and 9). The spring 42 is provided. at the upper end thereof with the right-angular extension terminating in a cam member 45, arranged to be engaged by the extension 44 on the pin 43, when the cams 9 are in posi tion to actuate springs 10 and 11. This cam pin is soarranged that on the depression of the key the extension 44 will engage the outer and upper surface of the cam and spring 41 will thus be forced away from spring 42. Upon the upward movement of the key, however, the extension 44 will engage the opposite side of the cam, and spring 41 will be caused to engage spring 42.. This will cause a circuit to be completed through i the shift magnet 23, thus drawing the bar 19 to thefleft, in which position it will be held y, the" pawl 27. The cams 9 are now in a position for engagement with the springs 12. If one of the keys be now depressed, the finger 40 will pass down through the notch 3S'into engagement with the rocking plate 33. Upon further downward movement of,

the key, the plate 33 will be rotated about its supporting points 35, forcing the link 31 to the right and withdrawing the pawl 27 from the notch 28, thus releasing the bar 19 which will return to its normal position under the tension of the spring The notches or grooves 38 are provided to prevent rotation of the cam and consequent movement of the bar 19 until after the key has been sufficiently depressed to cause ongagement of the spring 12 with the contact 13. The depression of the key this time will not cause engagement of the release finger 44 with the cam 45 on the spring 41, as the gain will now occupy the position shown in Assuming that the bar 19 is in its normal or retracted position, the operation of the key set is briefly as follows: Upon depressing one .of the keys 4, the corresponding spring 10 Will be forced into engagement with its coiiperating spring 11, thus completing a circuit to one controller. Upon the release of the key during the upward movement thereof, the release finger 44 will engage the cam 45, closing the contact between springs 41 and 42, thus energizing the shift magnet and causing the bar to be shifted to the left where it will be held by the pawl '27. \Vhen one of the keys 4 is next depressed, the cam 9 will have been shifted so that spring 12 will be forced into engagement with spring 13. Simultaneously therewith the release linger 40 will engage the rocking plate 33, causing the pawl 27 to be retracted and allowingthe parts to re turn to their normal. position.

In Fig. 10 a modification of the device just described is shown. This structure opelites in substantially the same manner as that just described, but the operating means is slightly different. In this figure the springs 46, 47 and 48, 49 correspond to the springs 10, 11 and 12, 13- just described. The springs 46, 48 are adapted to be forced into engagement with the springs 47, 4f) by means of insulated portions on the lower ends of hell crank levers 51, 52 pivotally supported on the members 53, 54 respectively. Mounted between the members 53, 54 are a pair of electromagnets 55, 56, the function of which is the same as that of the magnets 18 above described. The rotatable member 8 upon the plunger 3, instead of being provided with a cam 9, has a pair of downwardly projecting pins 57, thereon. When. the member 8 is rotated in an anticlockwise direction. as when the bar 19 is 'retracted )in 57 will be in a iosition to engage the arm of the bell crank 51. thus forcing spring 4-6 into engagement with spring 47. Fixed to the face plate 1 is a. pair of springs 59, 60, the function of which is the ,same as that of springs 41, 42 previously described. Projecting from the upper surface of the member 8 is a pin having a right-angularly extending portion 61 which, upon depression of the parts when in the position just described, will engage the outer; surface of the cam member 62 of the spring 59, forc'ig springs 59 and 60 apart. Upon the upward movement of the key, however, pin ii w ll engage the opposite side of this cam. member and spring 59 will be forced into engagement with the spring 60, closing a circuit through the shift magnet 23, whereby the members 8 will be rotated so that upon the next depression of the key, its pin 58 will engage the horizontally extending portion of the corresponding bell crank lever '52, forcing spring 48 into engagement with spring 49. The release means for the pawl 27 is the same as that just described with the exception that instead of providing an upwardly and out wardly extending finger on the member 8, said member is provided with a lug 63 which operates in substantially the same manner as the-release finger 40. Also the link 31 is connected to the pawl 27 on the opposite side of its supporting pivot. Thus it will be seen that upon the depression of one of the set of keys, contacts of the series which are associated with one controller will be closed, and upon the next depression of the same or a different key of the set, contacts of the other series which are associated with the second controller will be closed, this being accomplished automatically in the ordinary operation of the keys in setting up a call.

lVhat I'claim is:

1. In a switch, a key, a plurality of pairs of fixed contact springs associated therewith, and automatically operated means for operatively associating said key with a different pair of springs upon each actuation thereof.

2. In a switch; a plunger, a plurality of sets of contacts associated therewith, a contact operating member on said plunger, and automatically operated means for causing said member to actuate successive sets of contacts upon the repeated displacement of said plunger.

3. In a switch, a plunger, a plurality of sets of contacts associated tact operating member 1; Jsely mounted on said plunger, and automatically operated means for causing a rotary movement of said member, whereby it will actuate successive sets of contacts upon the repeated displacement of said lunger.

4-. In a switch, a plmger, a pair of contact sets associated therewith, a cam on said plunger, and automatipally operated means said sets of contacts upon said member,

one direction, a herewith, a confor causing said cam to alternately engage the repeated displacement of said plunger.

5. In a switch, a plung a, a pair of coirtact sets associated therewith, a member loosely mounted on said plunger, and automatically operated means for causing a backward and forward rotary movement of; whereby it will alternately actuate said sets of contacts upon. there n: peated displacement of said plunge-r. a j

6. In a switch, a plurality of keys,=a-'plu-; rality of series of Contact sets associated therewith, and means Wherehythe actuation?) of any key will operate a. contact set of a so different series from that operated by the next preceding key.

7. In a switch, a plurality of plungers, a." plurality of sets of contacts associated with. each plunger, a cam on each of said plungers, and means for causing a rotary movement of all of said cams each time a plun-. ger is operated in order .to operatively associate each of said cams with a different contact set.

8. In a switch, a plurality of plungers, a plurality of contact sets associated with each plunger, said contact sets being arranged in series, a contact operating means mounted I on each'plunger, and means for moving-all of said operating means each time a plunger is operated, whereby said operating means will be successively associated with contacts of said series upon the repeated depression of said plungers. o

9. In a switch, a series of plunger's, two pairs of contacts associated with each plunger, a cam loosely mounted on each of said plungers, and means for causing a backward or forward rotary movement of all 'of said cams as successive plungers are depressed, whereby said'cams shall be alternately associated with the contacts of said pairs.

10. In a. switch, a plurality of plungers, two sets of contacts for each plunger, said sets being on opposite sides of said plun gers, a cam loosely mounted on each of said plungers, a bar loosely engaging all of said cams, an electromagnet for displacing said bar, a third set of contacts associated with each of said plungers, means whereby the depression of any plunger will close said third set of contacts to complete a circuit through said magnet to rotate said cams in pawl for preventing the return movement of said bar. awe means actuated upon the next depression of a plunger for releasing said pawl to allow said cams to return to their original position.

11. In a switch, a series of keys, two pairs of'contacts associated with eael key, a contact actuating member for key, and means for causing a backward and forward movement of said members as successive keys are operated, whereby said members 139 eration of any key will cause the displace- 'ment' of said bar to move means for preventing reverse movement of SaIdHbH-I. and means actuated upon the next said members,

1,1eas1s 1 operation of a key for releasing said bar to allow said members to return to their original position.

y In wltness whereof, I hereunto subscribe my name this 1st day of November A. D., 15

JOHN NEWBERRY REYNOLDS. Witnesses:

NAUON E. TUTHILL, ALICE HAZLEY.

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