US910241A - Rosette. - Google Patents

Description

J. SVSTEWART. ROSETTB. APPLIOA'IION FILED DEO. 23, 1907.

Patented J an. 19, 1909.

UNITED STATESI PATENT UFFICI-l.V

JAMES S. STEWART, O1" NEW YORK, N. Y., SSIGNOB TO ANNIE STEWART, OF NEW YORK,.N. Y.

ROSETTE.

Specificationof Letters Patent.

Patented Jari. 19, `1909.

Application filed December 23, 1907. Serial No. 407,641. u

' 1o all 'whom it may concern:

Be it known that I, JAMES S. S'rnwairr, a citizen of the United States, residing at the city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in liosettes, of which the following is a full, clear, and exact description.

My invention relates to appliances for electric wiring and more particularly to rosettes for cleat'wiring where the circuit wires are run along a supporting surface by cleats at intermittently sup orting points, drops or extensions being o tained by the rosettes at any desired location. Under the above conditions, the diop or extension lines have considerable 'stra-ins applied thereto in use, and their connections with the rosettes must be of such a strong and substantial character as to withstand all such strains. A common practice for obtaining this result consists in lorinng a knot in the extension coid which cooperates with a cavity in the rosette. This necessitates a rather clumsy and awkward structure, and is also unreliable, because the knotl is liable lo slip.

By the present invention I aimto provide a fasteningl of great security which does not rely upona knot infthe diop or extension cord. A-t the saine time, I provide a number of other features, particularly a very ellicient insulating barrier between arts of opposite potential, particularly the liared or exposed connections. I also form gripping jaws of such a type that each individual stiand of thedrop or extension cord is grasped in a tortuous path. I further provide for so holding the strands or wires in place that they automatically fall into alinement with the clamping jaws above mentioned. In addition to these various features, I also aim to provide a more symmetrical construction, in which the bare portions oll the circuit or line wires are wholly incloised by the vitreous portions of the rosette. The nature of the fastening for these circuits or line wires is made in such a way that a water shed is iroduced, causing rain'and moisture to be deilected away from the metallic parts.

With these and various other objects inl view, my invention consists in the features of construction and combination as hereinafter set forth and claimed. i

In the drawings: Figure 1 is a top or plan View partly in section o the base or iody of a rosette embodying the principles ofmy inig. 1, and Fig. 6 is a section taken on the line VI-V I of Fig. 2.

Referring to the drawing in which like parts are designated by the same reference sign, 1 indicates a base or bod yof the rosette and which is of generally rectangular outline suitable to the purposes of cleat and similar wiring. 'N ear its ends, the base has recesses or assages 2 extending thereacross of asize an( location adapted to receive the circuit or line wires. In accordance with the present invention, I forni the middle portion 3 of the vpassages 2 deeply depressed beyond the plane of the end portions thereof, the material of the base being deeply hollowed inward for this purpose.

4 indicates metallic clips received in suitable recesses iii alineinent with one another and located on a center line running lengthwise of the base. These clips are sharply bent downward at their outer ends 5, so as to fall in the innermost parts ofthe depressed or hollowed portions 3 of the passages 2.

6 indicates terminal screws for engaging the circuit or line wires with thc metallic clips 4. These inclallic clips are heldin place onv the base l by the screws 7 passed therethrough.

8 indicates screws constituting the terminal connections for the extension or drop wires of the rosette. These screws or terminais are located at the inner or proxima-te ends of the clips '4,'but are separated by an intervening barrier or partition which will be later described. '.lhe metallic clips 4 have upturned ears 9 adjacent to each of the terminal screws (i and 8 and which cooperate therewith to prevent the electric conductors from working loose laterally from beneath the heads ol the screws.

The artition or barrier l() provided bcw tween t e metallic clips 4 is formed integrally with the base l. and has three or four separate functions. This partition-constitutes one of the pair of jaws mentioned in the preliininary part of the specification for engaging` and clamping the individual strands of the dro or extension cord in a tortuous path. X second function of this barrier or partition consists in furnishing protruding jaws above referred to, which are thereuponin a osition to readily engage upon said 4stran s Without an troublesome manipula-v tion on the part of t ie operator. All of these various functions of this barrier or partition are additional to its function in insulating' the two metallic clips 4 from one another.

I forni the partition 10 in practice with its tw'o ends oiiset from one another at the mid (lle,V as clearly shown in Fig. 1. Each end has a hole 11 therethrough of the size adapted to receive one strand of the drop or extension cord. immediately ad'acent to the inner edge of each hole 11, t ere is formed a reentrant an le 12 by virtue of the offset cork struction a ove mentioned. This construction also provides an exterior angle or corner.

13 between the rentrant angle 12 .andthe metallic `parts of each clip 4. The walls of the partitior.` di' barrier 10 between the vertices-of angles 12 and 13 are hollowed in Wardly at 14, as clearly shown in Fig. 1, said rounded ortions curving toward one an other slig tly as they approach the upper surface ..50 of the partition or barrier 10. These surfaces 14 respectively constitute one member of the air oi' clamping jaws already referred to, Wliich cooperate to bind the strands of the drop tortuous path. .l

The cover plate 15 is particularly shown in or extension cord in a i Fig. 2, and is ada ted to fit over the base 1 and cooperate Witthe clamping jaws 14 of the barrier or partition 10. For this'purose, the cover plate is centrally-recessed inward at 16 byfa rectangular opening of a Vforni generally corresponding to the. outline of the barrier or partition 10. Opposite the portions 14, however, the cavity 16 is roundn ed inward, as shown at 17, instead of being formed into a corner corresponding to the rentrant angle 12. This rovides a space in which the strands of the rop or extension cord may issue, but this space is so restricted that the strands are tightl yclamped or bound by the engagement. he curved surfaces 17 therefore respectively constitute the other clamping jaws ofi the pairs including the jaws or surfaces 14 alreadyv described. The interior surface 18 of the cavity 16 lies in close' proximity to the top surface of the partition or barrier 10, by which the strands ol the drop or extension wires are pinched in clamping relation. ln this Way, it 1will be eldest clearly understood that the strands are each bound along two surfaces orlines of engage nient .termed by the surfaces 14, 17 and 18, 20, respectively. The drop or extension cord iinally issues from the cover 15 through a central hole or orilice 21 Within the cavity 16. The cover tional features including y the cavities' 22 which lie directly above the .terminal clips with their screws 4 and S, so as to leave room for making the necessary extension circuit connection therewith. 23 designates downwardly curved. shoulders on the underside oi the cover plate which enter the hollowed in-A Ward ortions 3 of the base 1 in use, and iiisure t 1e deflection ol the circuit or line Wires therein.

24 designates openings 'through which screws maybe passed to engage the nuts 24" Within the base 1 so as 'te secure the cover plate thereon. The base plate may have any necessary 'holes or openings 19 for screwsor fastening devices by which it is secured in;

any desired relation.

ln use, the circuit or line Wiresdesignated plate 15 has several addi- 25 inFig. 3, are bared at 26 for a portion of theirlength and engaged beneath the terminal screws t3. For this purpose, the bared` portions ci the circuit Wires must be' sharpl`7 deilected inward into the depressed'wor he lowed portions 3 oi the base 1. When the cover 15 is' applied, the shoulders 23 thereonengage the circuit Wires and maintain there in the hell-@Ws 3. The drop or extension cord has separate strands or conductors 2?, both ci 'which enter the cover plate through the opening 21 and 'thereupon diverge irons,

one another over the tcp face 2G of the partie` tion lo. Each ci the strands or conductors Y passesdownwardly over the grooved faces 14,

until it arrives at the'entranoe of the proximate hele 11 extending through said barrier or partition. The strand' or conductor is then passed through this hole and finally connected 'to the adjacent ,terminal screw 8 of the clip 4. Each strand or conductor is, of

course, bare attlie point et its enga ementA withthe terminal screW'S, 'and it may i appen ice lin

thattlie lia-red portions extend haelt ier an unnecessary distance, but since each strand or conductor is inclosed` in 'a hole 11 in the vitreous or insulating partition 10, a ve ei?- fective insulation is rcvided bythe Wa ci said hole, even ii t e bared portion ci the 1?- Wire extends backward thereto. The strands or conductors issue troni the holes igniniedi, ately adgacent to their required location onposits the groot/ed faces ,14, 'so ltlnit vthe strands will be drawn into cioseccntact with auch faces by a slight outward tensionorpiill.'

Accordingly, 'when the `5x-over isepplied, the

strands er conductors automaticaliyregs` isterecl in proper relation between the faces Y 1e and l?, and are pfmched or gripped there by into a very tight and secure relation.

its

- ditional to that of the aces 14 an 17, and in sages, a partition or barrier integral with said The final tightening ,of the cover screws brings the inner face 18 of the cavity 16 in the cover tightly down upon the strands 27, thereby providing a grppmg enga ement ada direction substantially at right angles thereto. Each strand of Lhe drop or extension cord is thereby separately engaged by gripareas of engagement at ri fht angles to one another.' Should the insu ation )e abraded from the strands or conductors in this action, nolikelihood of a ground orcshort-circuit is caused, because ofthe corner lor shoulder 13 which eii'ectually separates each strand from the clip 4 of opposite polarity.

1. An electrical appliance comprising an insulating block havingrpassages extending across the ends. thereolI to receive circuit wires, terminal clips extending into said pasbleck and 'se )arating said clips, and a cover plate internally recessed to iorm two pairs lof gripping surfaces in conjunction with .said partltion or barrier to engage the conductors oi' a circuit.

2. An electricaL-appliance com )rising a base of insulating material and adapted to (constitute a cleat su' ort for circuit wires, .clips attached to saidp )ase and connected to the circuit wires, a barrier or partition integral with said base and separating the circuit wires, and a cover plate internally recessed to bind the conductors of a dropor extension cord on said partition or barrier along two separate areas of contact in a tortuous or inclined relation to one another` 3. An electrical appliance con'iprising a base of insulating material having transverse passages at its ends for circuit wires, said pas sages being hollowcd at their middle portions, terminal clips ccntrally'dispcsed longitudinally of said base and extending downward intol the hollowcd ortion of said passages, a cover plate raving projections adapted to' enter the hollowcd portions of said passages, and means for establishing dro) or extension circuit conncctions`with san clips.

4.4An, cicctrical appliance comprising al base of insulating material having an integral partition or barrier thereon', said partition or barrier having its two ends ofisct from one another at the middle, and a cover plate recessed to co crate with said barrier whereby circuit condliictors may be clamped in the corners produced by said offset construction of said barrier.

5. An electrical appliance comprising va base of insulating material having an integral partition or barrier thereon with its ends offset from one another at the middle thereof and having holes transversely extending therethrough, and a cover 'late recessed to bind circuit conductors in t ie corners or angles produced by said offset construction, and in close proximity to said holes.

6.' An electrical appliance comprising a base havingan integral barrier or partition thereon with transverse holes, and a non-cir-' cular cover plate formed to r'it over said barrier and provide cooperating gripping jaws for engaging the conductors of a circuit in close proximity to said holes.

7. An electrical appliance comprisiin a' base of insulating material having an integral barrier or partition thereon and which has transverse holes extending therethrough and corners'or rejections 13, metallic clips attached to saidpbase and adapted to be connected to circuit wires, and a cover plate formed to bind the conductors of a circuit in engagement with said partition or barrier at points where they are insulated from said clips by said corners 13.

48. An electrical appliance comprising a base of insulating material having an integral barrier or partition thereon and corners or rejections 13, metallic 'clips attached to said ase and adapted to be connected to circuit' wires,' and a cover plate formed with lateral surfaces to bind the conductors of a circuit in engagement with saidpartition or barrier'at points where they are insulated from said clips by said corners 13.

ln witness whereofy I subscribe my signature, in the presence of two witnesses.

JAMES S. STEWAR'I. Witnesses Warne M. CnArm,

JAMns D. ANTONIO.

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