US1166878A - Lighting-fixture. - Google Patents

Description

J Patented Jan. 4,1916.

llvv COLUMBIA PLANDORAPH Cd" WASMINGTB'N. D. c.

vices that are adapted to beiconnected'to a;

member formed of glass or other frangible mentriue-rrxrunn.

Application filed July 23, 1915. Serial No. 41,520.

To all whom it'may concern:

Be it known that I, HARRY O. ADAM, a

' citizen of the United States, residing at St.

Louis, Missouri, have invented a certain new and useful Improvement in Lighting- Fixtures, of which the following is a" full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same. i

This invention relates, primarily, to de:

material, so as to support said member or act as a connection between said member and a part with which said member cooperates.

The main object of myinvention is to provide a device of the character described that can be applied quickly to aglass mem ber or other frangiblemember without lia bility of cracking or breaking said member.

Another object is to provide a device of the character described which is so con? structed that it will beheld securely in en gagement with the member to which it'is applied by spring pressure.- And stillanother object is to provide an eflicient device for connecting the shade orother frangible element of a lighting fixture to the part that carries same, said device comprising a supporting portion that sustains the weight of the element to which the device is applied and a resilient clamping means that prevents said element from being 'disengaged from the supporting portion of the device.

Other objects and desirable features of my invention will be hereinafter pointed out.

Figure 1, of the drawings is a cross-see tional view, partly in elevation, illustrating my invention used in connection with the the diifusing shield of a lighting fixture. Fig. 2 is a horizontal sectional view taken on the line 22 of Fig. 1., Fig. 3 is a perspective view of one of my improved devices, and Fig. 4 is a horizontal sectional view illustrating'a slight modification of my invention.

My improved device is adapted to beused,

the means that sustains said shield. There fore, I have herein illustrated my improved device used in connection with a lighting HARRY C. ADAM, OF ST. LOUIS, MISSOURI.

Specification of Letters Patent.

Patented Jan.4,1916.

fixture for sustaining a frangible, bowlshaped shield that is arranged under the lighting unit.

Referring to the drawings, which illus trate the preferred form ofmy invention,

A designates the dilfusing bowl of a semiindirect lighting fixture and B'designates-a supporting means which may either consist of chains, screw eyes or other suitable devices that are connected to a ceiling B or ,to a top reflector that is arranged above the bowl A. The bowl A'is-co'nnectedto the supporting means B by; a plurality of devices, each of which comprlsesa'member C arranged inside of the bowl and a clamping member D having a portion that engages the outer side of the bowl. Y The member [C is provided with a laterally-projecting supporting portion 1' that projects'outwardly through an opening 2 in the bowl and sustains the weight of the'bowl. The clamping member'D is provided with a shank3 that projects inwardly through the opening 2 in the bowl and through an opening 1 in the member C, said shank 3 being provided at its outer end' with a. head that bears against the outer side of the bowl, as shown in Fig. 1. Said members C and Dare held securely in engagement with the inner and outer surfaces, respectively, of the bowl by a resilient means that acts on the shank 3 of the clamping device-D and exerts pressure on said shank in such a direction that the head at the-outer end of samewill be drawn inwardly toward the member C, thereby securely clamping the bowl in "position between the members C and D and pre venting the bowl'fron moving out of engagement with the portion 1 of the member C that sustains the weight 'ofthe bowl.

In the p'referred form' of my invention as herein shownsaid resilient means consists of a spring arm 4: on-the lower end of the member C jwhich' extends approximately parallel to the member C and engages a shoulder 8 on 'the shank 3, of'the menu berD. v

Itis immateriahso far as my broad idea is concerned, how the spring arm 4 is combined'with theshank 8, but I prefer to provide said-arm 4; with a key-hole-shaped slot 7 or opening 5 and provide the'shank 3 with a reduced portion 8*, as shown in Fig. 3, so that said'shank can be-inserted through the opening 5 the-arme, and then moved downwardly sufliciently to cause the reduced its portion 3 of the shank to lie in the narrow portion of the opening 5 in the arm 4, thereby causing the arm 4 to bear against the shoulder 3 on the shank 3 and exert pressure on same in the direction indicated by the arrow in Fig. 1. To attach the device to the bowl A it is only necessary to arrange the member C on the inside bowl, then insert the shank of the member D through the openings in the bowl, in the member C and in the arm 4, and thereafter press the arm 4 toward the member C and simultaneously depress the inner end of the shank 3, so that the reduced portion 3 of said shank will enter the contracted portion of the opening in said arm 4. If it is desired to disconnect the device from the bowl it is only necessary to flex the spring arm l sufficiently to take the pressure off the shank of the clamping device D, thus permitting the device D to be tilted into such a position that the shank of same can be withdrawn through the openings in the arm 4, in the member C and in the bowl.

A device of the construction above described can be applied to or removed quickly from the member A, in view of the fact that it is not secured to said member by a screwthreadecl fastening device. There is no liability of the member A being cracked or broken, as often occurs when a two-piece clamping member is being applied to the glass bowl of a lighting fixture; and still another desirable feature of such a device is that the weight of the bowl is sustained by a portion 1 on one of the members between which the bowl is clamped, instead of by the shank of the device that passes through said members and holds them in engagement with the bowl.

In the preferred form of my invention as herein shown the inside member C is provided with an integral hook 6 that serves to connect said member to the supporting means B, but this, of course, is a detail that can be varied without departing from the spirit of my invention. The member C can either be formed fiat so that it will bear directly against the inner side of the bowl, as shown in Fig. 4, or said member can be provided with flanges 7, as shown in Fig. 3, that embrace a vertically-disposed rib or corrugation on the bowl, as shown in Fig. 2, and thus prevent the member C from turning with relation to the bowl into an inclined or horizontal position. ber C of the device is preferably stamped out of sheet metal and all the various elements of same are integrally connected together, the shank of the hook 6 being curved slightly in cross section and the upper end of same being wrapped around a strengthening device 6 which preferably consists of a piece of wire bent into hook form, as shown in Fig. 1. The supporting portion The mem- 1 and the opening 1- in the member C are preferably formed by slitting said member C and bending the slitted portion laterally, as in Fig. 3, thus simplifying the construction of the device and reducing the cost of the manufacture of same. The spring arm 4; is integrally connected to the lower end of the member C in the manner shown in Fig. 1, so that the element as an entirety that is arranged on the inside of the bowl consists of a substantially U-shap'ed part, one leg of which exerts yielding pressure on the shank of a clamping member that bears against the outer side of the bowl, and thus prevents the bowl from moving out of engagement with the supporting portion 1 of the member that is arranged on the inside of the bowl.

. Having thus described my invention, what I claim, and desire to secure by Letters Patent, is:

1. A device for the purpose described, comprising a member that is adapted to be arranged on one side of the object with which the device cooperates, said member having a supporting portion that projects into an opening in said object, and a clamping member arranged on the opposite side of said object and provided with a shank that projects through the opening in said object.

2. A device for the'burpose described, comprising a member that isadapted to be arranged on one side of the object with which the device cooperates, said member having a supporting portion that projects into an opening in said object, a clamping member arranged on the opposite side of said object and provided with a shank that projects through the opening in said object, and resilient means that cooperates with said shank to hold said members in engagement with said object.

3. A device for the purpose described, comprising two members that are adapted to be arranged on opposite sides of the object with which the device cooperates, one of said members having a resilient arm that is provided with a substantially key-holeshaped opening and the other member hav ing a shank that passes through the object and which is provided intermediate its ends with a reduced portion that normally lies in a contracted part of said key-hole-shaped opening and thus serves to connect said shank and resilient arm together.

4. A device for the purpose described, comprising two members that are adapted to be arranged on opposite sides of the object with which the device cooperates, one of said members having a resilient arm that is provided with a substantially key-holeshaped opening and the other member having a shank that passes through the object and which is provided with a reduced porwith which the device cooperates, said member beingprovided witha laterallyv project w ing supportingportion that enters an open-1 'ing in said object, an integral'device at the I upper-end of said member for connecting to'a sustainin'g'means, a spring arm attached to the lower end of said member and eXa tending approximately parallel to same, "and a clamping member arranged on the outer side' of the object and provided with ashank :thatprojects inwardly through the object" 7 and which is provided with a shoulder that is engaged by the spring arm on the inner member, a v

6. In a lighting fiXture, a shield arranged under a sourceof light, a sustaining means ,for said shield composed ofa' plurality of devices, each of which consists of an nner and an outer member arranged on opposite sides of the shield,'a shank on said outer, I member that projects inwardly through an 'shield- 1 7 under a source of light, a sustaining means sides of the "shieldya shank onsaid outer member that projects inwardly through an opening in the shield, afspring armon' said inner member, thatiexert's pressure onsaid' iop'ening'inthelshield, andafsprin'garmf'on said, inner member that exerts pressure on 1 saidshank ina direction tending to hold a both members clamped'tightly against the: i I

7. In-alighting fiiztureafshield arranged ffor said shield composed "of-aplurality of ,1

devices, each'of;..t. zhich consists of an inner; I

andan outer member arranged on opposite shank 'in-adirection tending'to hold both" i said innerme'mb'er beingprovided With a ing means. i

In testimony Wher eofI-her eunto aflix my 7 signature in the presencefof two witnesses, q 5 a this twenty-first day ofduly, 1915; 1 7

' v 1 HARRYGQADAMJ 1 Witnesses: p

NVnLLs L. Channel-1,1v GEORGE -BAKEWELL. 7

Copies of this patent inlay be obtained fprvfive cents each, by addressingcommissioner f t n .Washingt0n,D.0.

,m embers clamped-tightly against the shield,

'supportingporti'on-- that enters an opening I in theshield, and an integral device on'said, I 1 innermember for connecting it to a sustain

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