US1520821A - Automatic switch - Google Patents

Description

W. KAISLING AUTOMATIC SWITCH Filed July 9, 1920 m. R /.1 EE m w. KAISLING AUTOMATIC SWITCH Filed July 9, 1920 3 Sheets-Sheet 2 llllll lllll II A umm 7271/5777??? Z/Z/ZY/ZEZYYKEZEZZ'ZYQ W. KAISLING AUTOMATIC SWITCH Filed July 9, 1920 3 Sheets-Sheet 5 T w W Z/Z/fZZz'am/TazE [2779 E7 Patented Dec. 30, 1924.

UNITED STATE WILLIAM KAISIIING, OF CHICAGO. ILLINOIS, ASSIGNOR T KELLOGG' SWITCH ARI? ANDSUFPPLY COMPANY, OF CHICAG-Q, ILLINOIS, A CORPORATION OF ILLINOIS.

AUTGIIATIC $17] I'I'CI Application filed July 9,

To all whom it may concern:

I Be it known that I, WILLIAM KAIsLrNo, a

citizen of the United States of America, re-

in a single direction during the selecting operation. The switch of my invention is adapted for use in semi-automatic and call distributing systems, but I do not wish to be limited to this use, as it may be used for a variety of purposes without departing from the scope of the invention. [in object of my invention is the provisional" a switch of the above type that. is simple in construction, cheap to manufacture and positive and eilicient in its operation.

A further feature of my invention is the provision of a particular pawl and ratchet arrangement in association with a motor magnet for advancing the wipers. step by step over the contacts of the bank.

The above features, as well as others, will be more particularly pointed out in the ensuing specification and appended claims.

For a more complete understanding of my invention, reference may be had to the accompanying drawings, in. which like relcrence characters in the several views denote like parts, and in which- Fig. 1 IS a plan view of the switch of my invention;

Fig. 2 is a view from the right of Fig.

Fig. 3 is a rear view of the switch;

Fig. 4 is a view from the right of Fig. 3; i

Fig. 5 is a front elevation of the switch;

Fig. 6 ,is asectional view along the line 6-6 of Fig. 1.;

Fig. 7 shows the wiper carrying hub and associated parts;

Fig. '8 is a plan view thereof, with parts broken aivay to more clearly illustrate the construction;

Fig. 9 is a view of; part of a contact bank with parts broken away to more clearly illustrate its construction andassembly; and

Fig. 10 is a sectional view along the line 10-10 of Fig. 1.

shape with the arcuate 19%0. serial No, 894,889.

Referring to the structure illustrated in l igs. 1 to 10, the switch comprises a mounting plate 2, to which are securedthe various The said plate 2 also operating parts. carries the auxiliary plate 3 to which the haul: of contacts B is secured, which latter cooperate with the wipers W carried by h ub l. The said hub 4.- is rotatably supported upon the mounting plate 2 in any suitable manner.

The contact bank B may comprise any suitable number of contact sets, and each set may include a test contact 5, an auxillary contact land a pair of line contacts 7 and 8. l/VIPGI'S VI, of which there are four,

cooperate with the contacts, there being a test wiper 9, a wiper 10 associated with the contacts 6, and the line wipers 11 and 12, which latter are associated with the line contacts 7 and 8. The contact bank B is semi-circular and may include fifty-five sets of contacts 5, 6, 7 and 8, radially disposed between the clamping plates 13 and 14. The contact bank B, as whole, is built up a plurality of similar arcuate sections, and a detailed description of one will be sufiicient. Each semicircular row of contacts, as for example thataof contacts 5, is built up of five arcuate sections 15, each arcuate section having mounted thereon eleven contacts 5. Each contact is rovided with a pair of cars 16, angularly isposed, preferably integrally formed with the said contact. ()penings 17 in the sections 15, in proper alignment with the cars 16 of the contacts, are rovided, but these openings are slightly sma ler than the ears and receive the cars 16 by a forced fit, thus holdin the said contacts radially disposed upon t e arcuate section. The sections are of suitable insulating material, such as micarta. In assembly, sectional plates 18, conforming in lates 15 and of suitable insulation, are p aced between the semi-circular clamping plates 1.4: and the arcuatc sections which carry the contacts 8. Sectional strips 19, 20 and 21 also arcuate in shape and of insulating material, are placed between the arcuate sections 15, which carry the contacts 7, 6 and 5 to properly insulate the contact rows one from the other, and also properly space them. (Refer to Fig.- 6.) Sectional arcuate plates 22 of suitable insulation material are placed between the'contacts 5 and the semi-circular clanipino' plate 13 to insulate the said contacts IIOID the clamping plate. Clamping screws 23 pass through suitable openings in the clamping plate 13 and openings 24- formed by semi-circular notches cut in the ends of the arcuate sections and insulation sections 18, 19, 20, 21. and 22. The screws 23 have screw-threaded engag ment with suitable tapped orifices in the clampplate 1 to securely clamp the arcuate sections 15 which carry contacts 5, 6, 'Z and 8 and insulation sections 18, 19, 20,2l and 22 between the semi-circular clamping plates 13 and 1 to "form the contact bank B.

The contact banlr is secured to the auxiliary plate 3 by means of the end clamping screws 23, which pass through suitable 7 enings in the ears integrally formed tn. the auxiliary plate 3, the nuts 26' havscrews l i ipers 9, l0, l1 and 12, which cooperate with the contacts 5, 6., i' and 8, are alilre. or example, wiper 9 has a disc-shaped portion 9 provided with an orifice a size to permit it being slipped over the hub The r c portions 9, 10", 11 and 12 of all the ers 9, l0, l1 and 12 are slipped over he but insulated therefrom by means of a insulation 2? and from each other by means of the insulation washers The hub d has integrally formed therewith a cup-shaped portion 4;, which forms a conainer for the motor spring 29. A sector provided havin a central orifice of a ize to permit it being slipped over the hub and restin, between the cup portion 4; of le said hub and an insulation washer 28 which insul "es the disc portion 2 of the w r 9 from the sector. The sector 30 and "1 discs of wipers 9, 1O, 11 and 12 are clainped in place upon the hub by means of the clamping, nut 32, which has screathreaded engagement with the threaded portion of the hub l 'Vipers 9, l0, l1 and 12 have drilled intermediate portions and are properly spaced by means of insulation washers 33 and are secured at these intermediate portions to an arm 34 of sector 30 by the screw 35. The latter engages a suitable tapped orifice in the forward end of the arm, and said screw is suitably insulated from the wipers by a bushing. The free ends of the wipers are flared for the purpose of forming engaging or contacting surfaces with the contacts 5, 6, 7 and 8. The disc portions 9, 10', 11' and 12 form eontacting surfaces for wiper brushes "37, 38, 39 and 40 suitably mounted upon a bracket 41 by means of the screws 42, the said brushes being suitably insulated from the screws 42 and from each other. The bracket 41, upon which the brushes 37 38, etc, are mounted, is secured to the mounting plate 2 by means of the screws 43. The wiper brushes 3?, 38, 39 and i0 contact, respective ly and permanently, with the disc portions 9, 10, ii and 12 of the wipers 9, 10, 11 and 12, so the said wipers 9, 10, 11 and 12 are always conduclively connected to terminals 37, 38", 39" and a0. The hub l, which can ries the wipers 9, 10, 11 and 12 and sector 30, is as a whole rotatably secured to the mounting plate 2 by means of a combined motor spring tensioning and bearing screw 45. The hub 4i is provided with a central opening through which the screw passes. The screw d5 is provided with a slotted head 45 and a reduced portion e5 this reduced portion 4-5 forming a bearing about which the hub l as a whole rotates. The shoulder formed by the reduced portion rests against the surface oi the cup-shaped portion 4i and the threaded end of the reduced portion 5 which protrudes through a suitable orice in plate 2 is adapted to receive a nut a4, which holds the screw 45 in rigid relation with plate 2 by clamping said plate b tween shoulder 45 (integral with 4-5) and said nut A motor spring 29 fits into the cup-shaped portion of the hub i, the said spring having its one end fastened to the cup portion 4 or the hub 4i, and its other end resting in the slot in the head of the bearing screw i cover-cap is provided which covers the spring cup container i. To give the proper tension to the spring 29, the nut 42? is loosened and the screw 45 is turned to the right or left, as the case may be, by means of a suitable tool inserted in the slot 50, and when the proper tension is obtained, the nut 47 is again tightened to hold the screw 45 against rotation and also hold the spring 29 at its properly adjusted tension.

The motor magnet M M, which is adapt ed to move the wipers 9, 10, 11 and '12 over bani: contacts 5, 6, 7 and 8, includes a heel iron 52, an armature 53 and a driving pawl The electromagnet 55 is suitably secured to the pole piece 52 by means of a screw 56, which has screw-threaded engagement with a suitable tapped. opening in the core of the electromagnet. The mounting plate 2 has integrally formed therewith an angular extension or bracket 57, the said magnet M M as a whole being secured thereto by means of the screws 58. which have screw-threaded engagement with suitable tapped orifices in the pole piece 52. The pole piece 52 at its free end has a tongue portion (SO-which extends through a suit able orificebl in the angle portion of the armature 53. The armature 53 is thus pivotally supported upon the forward end of thejpole piece 52, the edge 62 of the forward end of the pole piece 52 forming a pivot about which the said armature 53 rocks. The armature 53 is secured upon the edge 62 against displacement by means of a leaf spring 63 which has one end fashandset o tened to the pole piece 52 by means of screws 64: and vits free end provided with an orifice of a size to receive a pin 66 secured to the armature 53. The s ring 63 also acts a tension spring to old the armature in its normal position. The armature 53 car lies a driving pawl '4, which is provided with 'a rectan ular orifice 155, of a size to receive the re need end portion 158 of the vertical. leg 53 of the armature 53. The pawl 54 is provided with a nose 157 angularly disposed in relation. with the body portion of the pawl 54% by means of a shearing operation, the said nose 157 being normally in engagement with a tooth 158, of

which there are a plurality cut in the circumferential face of the sector 30. The nose 157 of the pawl 54: is held in engagement with. a tooth 158, by means of a coil spring 1'59 which has one end fastened to the tail of the pawl 5a and its other end secured to a hook 161 integrally formed with the armature 53, As the armature 53 "vibrates, the nose 157 of the pawl 54 engages successive teeth 158 of the sector, stepping the wipers 9, 10, 11 and 12 from one contact. set 5, 6, 7 and 8 to the next on each hack stroke of the armature, A. step 165 secured to the mounting late 2 has a portion 67, against which tie sector arm rests when in its normal position, the said angular portion 67 serving as a stop when the wipers W are released to normal, and also to limit the farthest vtorward movement of the wipers W in that the sector arm 30" engages the said augularportion 67 when the wipers W are in their {farthest advancei'l position. A pair of interrupter springs (38 and 69 are insulatingly secured to the heel iron 52 associated" with the motor magnet M M for the usual purpose.

A release magnet R M to restore the wipers 9, 10, 11 and12 is provided and comprises a heel iron 71', armature 72 and electromagnet 73. In general construction and mountil'igarrangement, it is quite similar to magnet M M.

A retaining pawl is provided and is pivotally sup iorted upon a post 86 and is rotatably held in place upon the post by means ot a cotter pin. The post 88 is secured to an adjustable plate 88 in any suitable manner, as by means oi a riveting operation. and the plate 88 is in turn secured to the mounting plate 2 by means of screws 8!). A coil spring; 90, placed around the post 86, has one end secured to the plate 88 and its other end engaging the pawl that. the retaining pawl 85 is forced into 85, and the tension of the springis such engagement with the teeth 158 of the sector 30. When the wipers W are stepped from one contact set to the next, the retaining pawl 85 retains the said wipers in engagement with a set of contacts as selected guidin I by the switch. The pawl 85 is provided with an extended portion 85, which lies in the path of the armature-72 of the release mal, the release magnet R M is energized,

and the end of the armature 72 in its movement engages the extension 85 of the pawl 85 and rotates the pawl 85 about its pivot, causing the nose oi the said pawl 85 to disengage the tooth 158 on the sector 30, and said pawl also causes driving pawl 15? to disengage sector 30 in an obvious manner so that the motor spring 29 now restores the wipers W back to normal or starting position when the arm 30 oil the sector 3t) again engages the stop 67.

A set of oil-normal spring contacts U N are insulating-1y mounted upon a bracket 92 by means of the screws 98, and the said braclret 92 is in turn secured to the mounting plate 2 by means of the screws 94:. A butter 95 of suitable insulation material and integrally formed with a spacer strip engages a spring of the contact set Q N when the wipers W are in their normal position to hold the contacts at normal. Upon the first step or the wipers W, the buffer 85 disengages allows the contacts (I N to assume their alternate positions.

The mounting plate 2 is detachably secured to the mounting plate 3. The mounting plate 3 is provided with a pair of lugs 96 integrally formed with the said plate 3 by means or shearing o eration, and the mounting plate 2 is provi ed with a pair of longitudinal slots 9? which cooperate with. the lugs 98 -for purposes as will be presently described. Screws 98, having screw-threaded engagement with suitably tapped orifices in the auxiliary mounting plate 3, extend up throuo'h the slots 97 in the mounting plate 2 when the said plate 2 is in the position as illustrated in Fig. 1. A. pair of nuts 99 which have screw-threaded engagement with the screws 98 hold the mounting plate 2 in position upon the auxiliary mounting plate 8. With this arrangement, should any oi the magnets or moving parts of the switch need adjustment or repair, the plate 2 may he quickly removed. To do so the nuts 99 are removed and the plate 2 may now be moved downward with reference to Fig. 1, until the wipers W are free of the contact hank l3, and when in this position the mounting plate 2 and its parts as a whole may be lifted oil. A. substitute plate is placed upon the auxiliary plate 3 with the lugs 96 resting in the slots 97, and the screws 98 extend up through the said slots 97. When inthis position the plate 2 may be moved upward and the slots 97 form means and the lugs 96 some as stops, hen the plate 2 is in the position as illustrated in Fig. 1, the nuts 99 are again placed on the screws 98 and tightened. [an enlarged circular orifice 100, intermediate the ends or each of the slots 97, is adapted to receive the cylindrical reduced portion 101 of the nuts 99 when the said nuts 99 are in clamping position. These circular orifices 100' in the slots 9? in relation with. the cylindrical portions 101 of the nuts prevent longi udinal and side movement of the mounting plate 2. The contact bani: as a whole, may also be removed by removing the nuts 23, as is readily apparent from the previous descriotion in connection with the accompanying drawings.

A set of connecting jacks T is rigidly ccured to tie auxiliary moon 1 .i i Q och one of said terminals comprislrg tvo ,imilarlv shaped s ring members 102, ing their contacting ends flared outwaro eceive the spring jacks 103 inoun d noon 118 mounting plate 2. 'lhe connecting jaclrs .L are slots in a blocl: 10 u ulah mg material and to clamp the said conn 'aclrs in place, an insulating strip sniping adapted plate 106 are provided v to be cl camp which screws have scren with sui nry mounting plate 3. A set or spring jaclrs 103 are pro cooperation with the connecting the spr'ng jacks 103 being securely held means 0* oed to the mounting to that illustrated an connection with the connecting The spring jacks 108, as before cooperate with the connecting j whereby each of the spring jacks 1 sorted between a pair of connecting jacl s 102 to form a connection. Q

. cl which are the spring jacks 103, therehyallowing the operating mechanism to he readily removed without the necessity of unsoldering any of the connecting wires, as all the incoming and outgoing wires to parts carried by the plate 2 are carried through the connecting jaclzs 102 and spring jacks 103.

While 1 have illustrated and described a specific form of the invention, I do not wish to be limited to the same, as changes and modifications will readily suggest themselves to those skilled in the art, and the mechanism is obviously usable in a large variety of relations, but

What I do claim is:

1. A single level selector, including a contact bank and supporting means therefor, a mounting plate supporting the moving parts of the selector, said mounting plate rcmovably attached to means, automatic guide means including .ugs integrally formed on said supporting means, slots formed in said moun ing plate, removable members for insuring the exact lateral and longituoinal adj istment when a new mounting plate is subst' .ted for said first mcntioned plate,.contact wipers rotatably su ported on said moo: ting plate and in ativc position so tl as said wipers gage the contacts in said contact bunk,

ing means includr ratchet and mechanism for driving said contact W i'rom one of b in contacts to another means for operating saiddriving pawl, hing pawl to: engaging the het id driving means to retain the wipers in neir advancel poi 'tion anc also adapted to T e said ratchet and. to engage aid to permit saio wipers on wl a supper shaiic and assoc central point, of the sine, the said magnets be m norn'ial s worl i l said si and release mechanism for respectively to actuate the w off-normal contacts, said oil actuated and controlled by said said mechanism engaged by said release mechanism to release and permit said wipers to restore to normal by spi sion.

8. Selector mecl ism having wipers oi spring mate l o that thcv require support. at a point 1DeGI'E6Cil&l3Q OI their length, a rotary ratchet and wiper-carrying hub on said shaft, the ratchet element Xtending outwardly to said intermediate point oi? said wipers and mechanical connections whereby said wipers are insulatingly supported by said element at their said intermediate point.

A selector switch including an arcuate contact bank and a supporting member for the same, a set of spring contact wipers movable in a single plane to engage the contacts of said contact bank, a motor mag net for causing said contact Wipers to engage contacts in said contact bank, a release magnet for restoring said contact Wipers to normal and to disassociate said motor magnet from said contact wipers, a mounting member for said contact Wipers, motor magnet and release magnet, said mounting late provided with slots for receiving lugs ormed integrally on said supporting member, means for engaging said supporting member and said mounting member, said till) lugs and said last means serving .to a justably secure said supporting member to said mounting member and said contact bank in position relative to said contact wipers.

5. A selector switch movable in a single plane including a contact bank, sets oi? contact wipers for engaging sets of contacts in said contact bank, means for causing said contact wipers to engage contacts in said contact bank, releasing means for restorii'ig said contact wipers to normal, a supporting member for said contact bank, a mounting plate for said contact wipers, said first means and said. releasing means, said mounting plate provided with slots for receiving lugs integrally formed on said supporting member, other members for engaging said supporting member and said slots to adjustably secure said supporting memher to said'mounting plate so that the contact wipers are operatively positioned relative to said contact bank.

6. lln a selector switch movable in a single plane including a contact bank and a supporting member for the same, a set of: spring contact wipers adapted to be rotated in a single p1ane,'a driving magnet for retating said Wipers, a member for determining the distance said wipers may be rotated, a releasing magnet for disassociating said driving magnet and said Wipers to permit the restoration of said wipers to normal, a mounting member for said Wipers, driving magnet and releasing magnet, said mounting member provided with slots for ermitting said supporting member to e adjustably secured thereto by means of screw members extending through said supporting member and said slots and by means oat integrally formed members on said suppor ing member engaging said slots.

7. in a single level selector having a set of contact wipers secured to a ratchet and to a rotatable hub member supported by a shaft, a mounting plate for said shaft and hub member, a contact bank and a supporting member, means integrally formed on said supporting member to engage openings in said mounting plate to adjustably secure 0 said mounting plate and said supporting member together, driving means including WILLIAM KAISLING.

a ratchet and a driving pawl for advancing

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