US1630745A - Suspending device for lighting fixtures - Google Patents

Description

May 31, 1927. 1,630,745

P. M. HOTCHKIN SUSPENDING DEVICE FOR LIGHTING FIXTURES Filed Aug. 29, 1921 2 Sheets-Sheet l m y i 2 J2 V E J3 1 1927. May 3 P. M. HOTCHKIN SUSPENDING DEVICE FOR LIGHTING FIXTURES 2 Shets- Sheet 2 Filed Aug. 29. 1921 Patented May 31, 1927.

untrue STATES PATENT OFFICE...

PAUL M. HOTGHKIN, OF CHICAGO, ILLINOIS.

SUSPENDING DEVICE FOR LIGHTING FIXTURES.

Application filed August 29, 1921. Serial No. 496,213.

The present invention has to do with electrical lighting fixtures ot the suspended type,

and has particular reference to the suspending devices or canopy structures thereo'l.

The"ordinary torin oi suspending device oi thecharacter referred to is ditlioult to wire. liluch time and labor are involved in eltccting this, and especially when fitting the canopy in position at the point oil? installation. This is due to the difliculty of threadcluded novel and eiiicient means for locking the fixture-suspending chain to the canopy structure, and thereby to preclude separation of the chain therefrom with consequent possible injury to the fixture.

Other objects and advantages will appear the nature of the improvements is better understood, the invention consist-ingsubstantially in the novel construction, combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and finally pointed out in the appended claims.

A practical form of the invention is disclosed herein, but this is not to be taken in a limiting or restrictive sense. Itdelineates to the art a concept of the appropriation of the invention to the purposes for which the latter is contemplated.

in the drawings Fig. 1 is a side elevation oil a lighting fixture constructed in accordance with the present invention.

Fig. 2 is a transverse sectional view on an enlarged scale of the canopy construction disclosed in Fig. 1.

Fig. 3 is a detailed sectional View, as on the line 3--3, Fig. 2. I

Fig. lis a sectional plan view as on the line d l, Fig. 2. p Fig. 5 is a transverse sectional view of the chain support, on the line of section of Fig.

2, portions being omitted to disclose more clearly the interior construction otthe support.

.lrlelerring now in detail to the accompany suspending chain commonly "found in indirect lighting fixtures oi' the suspendedtype. This is connected at 1ts lower end to-the usualsocket shell 11 in which the illuminating element 12 is positioned, and from which a plurality of downwardly extending supporting arms 13 are projected for sustaining thebowl lit in associated relation with the socket shell 11. The chain is connected to the canopy structurelo, and it is the latter with which the present invention is more directly concerned. Referring, therefore, to l igs. 2, 3 and 4t, the features of this structure will be more readily apparent. The

same includes the usual suspending device 16' commonly found in an outlet box 17 into which the circuit wires (not shown) are led. Associated with the suspendingdevice 1.6 is

a threaded bushing 18 to which is connected a coupling 19, and depcn ding from the lower end of said coupling is a threaded bolt 20. To the lower end of the bolt 20 is detachably connected a chain support 21. This is commonly known in the art as the hickey. The upper end of the chain support 2lis provided with a screw threaded bore 22 into which the lower end of the bolt 20 is fitted, and. alter the support 21 has been screwed on. to the bolt 20 to the required extent a lock nut 23 is tightened upon the support 21 to prevent turning of the latter.

The lower end of the chain support 2L is cut out to provide a downwardly opening slot 24 which is of relatively large width in order to receive the upper link of the chain 10 and to permit this link freely to enter the same. Hit substantially the mid-portion of the support 21 the same is reduced in diameter to provide a shouldered boss 25the exterior of which is screw threaded, and mounted on said boss 25 is a retaining ring 26 having an annular bead 27 which forms a support for the lower end of the canopy 2S.

Loosely mounted in the support 21, and extending transversely of the slot 24 thereof at point adjacent to the top 01. said slot, is a suspending pin 29. The length of this pin is slightly less than the diameter of the boss ing drawings, the numeral 10 designates the 25, so that the ends of the pin 29 lie within the boss and are adapted to be covered by the retaining rlng 26 when this 1s applied to the boss, Thus the pin 29 is prevented be thereof openingat the sides the support 2t, while their ltnrer ends, and a portion oi each passage, extend into coinnuniication with the slot 2%, it Regardless, therefore, of the fact that the chain 10 is connected to the supportill by the pin flihit is possible tor one of the current leads. 30, to be lilli'tbtttlGEll; into the lower end of each of the passages 31 and to be pushed upwardly therethrmigh into the space normally enclosed by the canopy This, of course, is effected before the canopy has been pushed up, into iti pose tion next to the ceiling or other point troni .which thelir'cture is suspendmi, and when the current leads Btlhave been thus threaded theyinayho easily connected to the circuit wires at the outlet box 17. Attertlns has i been done the-canopy 28 is pushed up into position, and the retaining ring it screwed upon the boss 25,7111 wl'nclrposition the annular head 27 thereof engages the lower end of the canopy 28 and holds the latter n 13051 tion.

From the foregoing description it will be apparent that the herein described invention provides a canopy construction which is constructed and designedlo fttcllllldtfl the general assembly of the parts andlby which,

afterthe fixture has been supended from the canopy structure, the current leads of the fixture may be easily and quickly, threaded into the, canopy for connection with the circuit wires at the outlet boxn Fin-thew anore, the invention provldes a construction by which the fixture-Snspending chain otficiently locked to the canopy structure so.

as to be precluded from becoming separated therefrom, and this prevents An ury to the fixture due to separationot suchchain tron' the canopy structure. y:

11 claim: y

1. In a canopyconstruction for lighting fixtures, the combination with a suspensory device, of a chain support connected thereto,

said support being provided atits lower end with a downwardly opening slot for receiving the suspending chain of the fixture, said support also being provided with diagonally disposed passages therethrough for receiving the current leads of the fixture and to, permit their threading through the support while ocoyme the suspending chain is engaged therewith, one of said passages being arranged at each side oi said slot and having its lower end in connrulnication therewith and its upper end opening at the exterior of said support.

2. In a canopyconstruction for lighting fixtures, the combination with a suspensory device, of a chain support connected thereto, said support beingprorided at its lower end with a downwardly opening slot for receir ing the sizspencliiigcliain oi thefixture, said support also being provided with diagonally (hsposed passages therethrough for recciw lngthe currentleads of the fixture and to permit their threading through the support while the suspending chain is engaged thcrc-- with, one of said passages being arranged at ezuthside of said slot and havingits lowciy end in tfUl'Ullltl'fliCililiOlt therewith and upper end opening at the exterior otsald support, means for (.letaclmbly engaging the chain with mid support, and means for lock:

ing said engaging means in the support.

In a canopy construction for lighting lintures, the combination with a suspeusoryj device, of a chain support connected thereto,

a chain associated with said support, a pin; loosely mounted n said support and now; which the and chain is suspendcchand means associated sans-nu supportrlor locking said pin against displacement.

l in a canopy construction toaligliting fixtures, the combination with a suspensoiy device, of a chainsupportconnected thereto, aichain associated with said support, a pin displace ably mounted therein and detaclr abl" connecting said chain to the support, and a retaining ring detachably connecteril to said support and co-operating therewith to prevent displacement oithe pin from the support to lock the chain to the support.

5, In "a lighting fixture of the class described, the combination with a sus Jensory device, of a chain supportconnecte thereto, a fixturechain associated with said sup port, a pin displaceably mounted in the sup port and detachably connecting said chailn to the support, a canopy surrounding the support and said suspcnsory device and a retaining ring detachably connected to said I support and (lo-operating therewith to prevent c'iisplaceinent ot the pin from thesup port to lock the chain to the support, said retaining ring having means adapted to engage the canopy to hold the same in applied position. i i

G. In a lightin fixture of the class described, the combination with a suspensory device, of a chain support connected thereto, a nature chain associated with said support, aipin displaceably mounted in thesupport and detachably connecting said chain to the supper-La canopy surrounding the support and said suspensory, device, and a retaining ring detachably connected to said support and co-operating therewith to prevent displacement of the pin from the support to lock the chain to the support, said retaining ring having an annular bead adapted to engage the lower end 01 the canopy to hold the latter in applied position.

7. In a canopy construction for lighting fixtures, the combination with a suspensory device, of a fixture support connected thereto and provided with a downwardly-opening slot for receiving the suspending ele-v ment of the fixture, a pin loosely mounted across said slot for detachably connecting the suspending element to said support, and means covering the ends of said pin and obstructing movement thereof for preventing displacement of the pin from .thesupport, whereby to lock the suspending element to said support.

8, In a canopy construction for lighting fixtures, the combination with a suspensory device, of a fixture support connected thereto and provided with a downwardly-opening slot for receiving the suspending element of the fixture, a pin loosely mounted across said slot for detachably connecting the suspending element to said support, said pin being of less length than the transverse dimension of the support, whereby the ends of the pin terminate short of the sides of the support when the pin is positioned in the latter, and a retaining ring associated with said support and covering the ends of the pin to obstruct outward movement thereof for preventing displacement of the pin from the support, whereby to lock the suspending element to said support.

In testimony whereof I have hereunto PAUL M HOTCHKIN.

subscribed my

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