US1508744A - Supporting base for relays or other electrical units - Google Patents

Description

Sept. 16 1924. 1,508,744

J. o. CARR ET AL SUPPORTING BASE FOR RELAYS OR OTHER ELECTRICAL UNITS til-ed Juno 8. "21

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Patented-Sept. 16, 1924.

UNITED STATES PATENT- OFFICE.

JOHN O. CARE AND HOWARD L. KRUM, OF CHICAGO, ILLINOIS, ASSIGNOBS TO MOR- KRUM COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION.

SUPPORTING BASE FOR RELAYS OR OTHER ELECTRICAL UNITS.

Application filed .Tune 8, 1921. Serial No. 475,939.

.To all whom it may concern:

Be it known that we, JOHN O. CARR and HowARn L. KRUM, both citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Supporting Bases for Relays or Other Electrical-Units, of which the follow ing is a specification.

lhis invention relates to supporting bases for relays or other electrical units but more particularly to the slip base type and has for its primary object to provide a new and improved structure which will enable the relay to be more quickly and easily connected to and disconnected from the fixed terminals.

Further objects of our invention are to provide an'advantageous interlocking connection between the bracket and the relay to prevent injury to the parts when the relay is being connected or disconnected, to

protect the-clips and wiring of the bracket and relay, and to provide an improved mounting for the insulating member carrying the clips on the bracket. I

The many other objects and advantages of the present invention will be better understood by reference to the following specification when considered in connection with the accompanying drawings illustrating a selected embodiment thereof, in which Fig. 1 is a side elevation partially in.

section of the relay complete with the parts in the first position of assembly.

Fig. 2 is a partial central vertical section with the parts completely assembled.

Fig. 3 is a plan view'of the connecbracket. p r t is a bottom plan view of the relay.

Reerring the drawings, a connection ded with inwardly project- 9 comprises a rectangular ing perforated lugs 13' to enable the same to be secured by screws or other similar means upon a table. An integral web 14 connects the side members of this frame. A clip support 15 of fibreor other suitable insulating material is secured upon this web by screws 16. A plurality of resilient clips 18 are secured upon the support 15 by means of screws 19 before the support is attached to the web and the heads of these screws are preferably countersunk in the under face of this support. A thin strip 14 of insulating material is interposed between the web and the clip support to protect the countersunk heads of the screws 19. The outer end 20 of each of the clips 18 preferably projects beyond thc'corresponding edge of the support and is provided with a perforation or slot to permit a terminal wire 21 to be connected thereto. An upright guard plate 22- is preferably formed on the rear edge of the frame 12 to protect these terminals. Each of the side members of'thc frame 12 is provided with ail-upwardly proj ecting flange 23 on which is formed an outwardly projecting stud 24;. lhe upper edge of this flange is preferably above the level of the clips to act as a protector for these clips when the relay is detached therefromi The relay 11 comprises a suitable frame 11 coils 11 and contacts 11. These parts are mounted on a base 11 and enclosed by a removable cover 11 The base 11 com-' prises a base plate 25 having a depending flange 26 extending along its Iront and side edges. This flange preferably projects beneath the other parts of the relay to pro tect the or ps and terminals. The side portionsof this flange 26 are provided with oppositely disposed L-shaped slots 27 coinmunicating with the bottom edge of the flange and adaptedto interlock with the corresponding studs 24 on the brackets 23 to form a detachable connection between the relay and thebraclrct. The bottom edge of the flange 26 rests on the frame 12 when the relay and bracket are in their assembled position. The side members of this frame 12 and the flanges 23 form guides for the relay during the assembling operation, as will be more fully set forth hereinafter. fr clip support 28 preferably of fibre is socured on raised shoulders 29 on the under face of the base plate 25 by screws 29 and a plurality of rigid clips 30 are attached to til this support by screws in the same manner as the clips 18 on the support 15. The outer ends 31 of these clips 30 project beyond the corresponding edge of the bar 28 and'the variousrelay conductors 32 connect these clips with the relay coils and con= tacts. 4

-A strip 25' of insulating materialis pref erably interposed between the support 28 and the shoulders 29 to protect the countersunk heads ofthe screws 29. ends 33 of the clips 30 are bent downwardly to engage the under face of corresponding ends 34 of the clips 18 and force these ends 34 upwardly, as the relay is moved into its assembled position. The position of the clips 18 prior to engagement with the clips 30 is indicated in dot in Fig. v2. These clips 18 should preferably be of stiff spring metal in order to "insure the proper contact with their respective rigid clips.

To mount the relay upon the bracket, it is first held in the relative position indicated in Fig. 1 of the'drawings, with the open ends of the slots 27 directly above the corresponding studs 24. The relay is then pressed downwardly to. bring the studs and slots into the relatlve position indicated in Fig. 6. In this position, the inner faces ofthe side portions of the flange 26 fit closely against the corresponding outer faces of the flanges 23 and the bottom edges of these sideportions rest upon the side members of the frame 12. The relay is then slid rearwardly until the studs reach the'ends of their respective slots 27 During this rearward movement, the relay is 'guidedby the side members of the frame 12 acting as tracks,

.and by'the flanges 23. The relay is held in studs in the slots and it is desirable that engagement with these'side members by the these studs fit closely their respective slots to prevent any upward movement of the re lay resulting from the engagement of the clips.

.To remove the relay, it is drawn forwardly on its guides until the studs 2-1 strike thecorresponding shoulders 38 at the end of 'ments.

the horizontal ,portions of the slots 27, as

indicated in Fig. 6' of the drawings. The relay :is then lifted to withdraw the studs from the slots. The connecting of the relay is accomplished 'by successive vertical and horizontal movements.- The disconnection is performed by a'reversal ofthese move- On account of the'resistance produced by the premure of the clips 18 on the clips'30, considerable force must be exerted to disengage these parts andthe sudden release of the relay while subject to this force would be liable to cause injury to the parts of the relay or the bracket if their relative movement was not limited and controlled. T'he clips 18 are drawn entirely clear of the clips 30 before the studs 24 permitthe re- The inner lay to be raised. This is important as it prevents distortion of the flexible clips which would subsequently result in imperfect contact between the clips.-

The web 14 connecting the side members of the bracket frame greatly strengthens the insulating support 15 as this support may be attached thereto at short intervals. The clips are preferably cut away at 40 to admit the heads of the screws 16 therebetween.

It will therefore-be readily evident that the relay may be quickly and easily connected to or disconnected from the connec- The insulated supports for the 'We are aware that many changes may be made in the form and arrangement of the various parts without departing from the spirit of our invention, and we reserve the 'right to make all such as fairly fall within the scope of the following claims.

We claim as our invention:

1. In combination, an electrical apparatus, a supporting base therefor, a table bracket, and cooperating sets of connector clips mounted respectively on said base and bracket and adapted to be engaged by the relative horizontal movement of said parts, said base and bracket having cooperating lugs and grooves for preventing relative vertical movement of said parts when said connector clips are engaged.

2 In combination, an electrical apparatus, a supporting base therefor, a table bracket, cooperating sets of connector clips mounted respectively on the lower face of said base and upon the upper face of said bracket and adapted to-be engaged by the relative horizontal movement of said parts, said base and bracket having cooperating portions for ghiding the relative horizontal movement thereof and-having cooperating lugs and grooves for preventing the relative vertical movement thereof when said connector clips are engaged.

3. In electrical apparatus, a fixed bracket, a unit separate from said bracket and-having a base plate provided with depending side flanges adapted to' fit over corresponding upright flanges on L-shaped slots in said unit flanges adapted to receive outwardly projectin studs on said bracket'flanges to form a locking ensaid bracket,

1,,isoaraa gagement between said base and said unit,

and connection clips on said bracketadapted to engage corresponding clips on said unit.

4. In electrical a paratus, a fixed bracket provided with para lel, upright side flanges, a unit separate from said bracket and having a base plate provided with depending side flanges fitting corresponding side flanges on said bracket, an elongated stud on each of said bracket flanges co-acting with a corresponding substantial L-shaped slot in the opposing unit flange to form a locking engagement between said unit and said bracket, and connection clips on said bracket engaging corresponding'clips on said unit when sald bracket and said unit are in their locked position.

5. In electrical apparatus, a fixed bracket provided with parallel upright side flanges, a unit separate from said bracket and having a base plate provided with depending side flanges fitting over the corresponding side flanges on said bracket, L-shaped slots in each of the side flanges of said unit com municating with the bottom edge thereof, elongated studs on the outer faces of said base flanges adapted to enterthe corresponding slots in said unit and be advanced there in by successive vertical and horizontal movements of said unit relative to said base to form a locking connection between said unit on said base, guides on said basefor directing the horizontal movement of said unit, and connection clips on said bracket engaging corresponding clips'on said unit when said bracket and said unit are in their locked position.

6. In electrical apparatus, prising a frame, a clip support on said frame, connection clips secured on said support and having their terminal ends pro-.

jecting beyond the corresponding-side edge 7 thereof, and a guard plate disposed opposite to said ends.

7 In electrioalapparatus, a bracket comprising a frame, a web formed integral with said frame and connecting the side members thereof, a clip support extending longitudinally of said web and secured thereto at short intervals, connection clips secured on said support and having their terminal ends projecting beyond the corresponding side edge thereof, and a guard flange on said frame extending longitudinally of said supa bracket comport opposite to the terminal ends of said clips.

8. In combination, an electrical appara tus, a supporting base therefor, a table bracket, cooperatin sets of connector clips mounted respectiveiy on the lower face of said base and on the upper face of said bracket and adapted to be engaged by the relative horizontal movement of said parts, said base having depending side flanges extending downward below the connector clips thereon, and said bracket having means cooperatingwith said flanges to guide the horizontal movement of the base thereon.

' 9. In combination an electrical apparatus, a supporting base therefor, ,a table bracket, cooperating sets of clips iiounted respectively on the under side of saidbase and on the u per side of said bracket and adapted to be engaged by the horizontal movement of said base oil said bracket, said base and bracket having side flanges for guiding the horizontal movement of said base and between which flanges the corresponding sets of clipsare arr-an ed.

10. In electrica apparatus, a bracket member, aunit member, a series of horizontally disposed connection clips on each of said members arranged to be engaged with the corresponding clips on the other member by relative horizontal movement of said members, the, unit clips underlying the bracket clips and retaining said unit member firmly in place upon said bracket, and shaped slots onone of said members engaging corresponding lugs on the other member to prevent relative vertical movement of said members except when the connection clips are disengaged.

11. In combination, an electrical apparatus,- a supporting base therefor, a table bracket, two horizontally arranged sets of connector clips mounted respectively on the under side of said base and the upper side of said bracket and adapted to be engaged by the horizontal movement of said base on said bracket, said base and bracket having side flanges for protecting said connector clips and said flanges having cooperating lugs and grooves for preventing the vertical movement of said base when said connector clips are engaged.

JOHN O. CARR. HOWARD L. KRUM.

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