USRE20170E

USRE20170E - K berger

Info

Publication number: USRE20170E
Authority: US
Publication date: 1936-11-17

Description

NOV. 17, 1936. ER Re. 20,170

SWIVEL HARP FIXTURE FOR ELECTRIC LAKES Original Filed March 9, 1934 INVENTOR KORNEL BERGER 1 1, 0* ATTORNEY Reissued Nov. 17, 1 936 UNITED STATES swrvmnsnrrix'mnaron MOMS Kernel Berger. New York, N. Y. Original NI. 1,974,947, dated September 25, 1934,

- Serial No. 114,810, March 9, 1934. Application for the In! 11, 1935, Serial No. 21.068

This invention relates to' new and useful improvements in a swivel harp fixture for electric lamps.

The invention has for an object the construc- 5. tion of a fixture as mentioned by a wire harp frame, a stud swivelly supported on the wire frame, and an t for fric- ,tionaliy holding the stud against swiveling.

Still further the invention particularly pro- 10 poses an arrangement of a resilient means on the stud acting between a washer slidable upon the stud and resting against the frame for constituting the means to frictionally control the swiveling of the stud.

15 As another-object of thisinvention it is proposed to provide a casing in conjunction with the stud for extending over and partially covering the resilient element.

I Another one of the objects of this invention is 20 Y the provision of a protuberance on the stud forming a shoulder for the casing mentioned in the previous paragraph and an whereby'a knob threadedly enga s a shank on the top of the stud for acting against a shade frame ma 2;; manner sothat theshadeframeagainst the casing and so aids in controlling the action of the resilient element. 7

Still further the invention prom the provision of cam portions arranged upon a washer 3o slidable and rotatable upon the stud for controllingthepressureandthusthefrictionbetween the washer and the wire harp frame. V I

Still further the invention the construction of articles as mentioned which are sim- Pie and durable and which may be manufactured and sold at a'reasonable cost. 1 For further comprehension of the invention, and of the objects and advantages thereof, referme will be had to the following description and 40 accompanying drawing, and to the. appended claims in which the various novel features are more particularly set forth. I

In the accompanying drawing forming a inaterial part of this disclosure:--

' 45 m. 1 is aside elevational view of an electric lamp with a swivel harp according to this invention. Fig. 2 is a fragmentary enlarged sectional view I so taken on the line 2-2 of Fig. 1.

, Fig. 3 is a horizontal sectional view taken on the line 3-4 of Fig.2.

Fig. 4 is a perspective view of the swivel harp- 55 l'ig.5isaperspectiveviewsimilartol ig.4

but illustrating another of the invention.

F18. 6.1a afragmentary sectionnlvlew taken onthelinel-iofligj. I .0 Flg.'iisaperspec 1YY eWsimihrhIig.4,

i1 project.

but illustrating e still further modified form of harp fixture.

Fig. 8 is a sectional view similar to Fig. 2 but illustrating a modification of the invention.

Fig. 9 is another sectional view similar to Fig. 2 but illustrating a still further modified form. Fig. 10 is another view similar to Fig. 2 but illustrating a still further'modifled form.

The swivel harp-fixture according to this ini0 vention in Fig. 1, is shown mounted upon 'a lamp ll having a conventional lamp socket ll supporting the electric light II.

The fixture comprises abracket. element i3 formed with an opening l4 adapted to engage Over a stud upon which the socket I l is mounted to the lamp. The details .of this construction is not given in this specification since it forms no part of the invention and is generally known in the art. The harp fixture includes a wire memher ll bent substantially into u-shape, but inverted and having its ends secured to the bracket The dot and dash lines I! illustrate alamp shade. Details of this lampshade are not important except that it is provided with a central annular portion Ii from which radial wire ribs The other details of the construction of the lamp shade lFare not important and consequently are not shown upon the drawing since they form no part of the invention.

A stud i8 is formed with atransverseopening i9 through which a portion of the wire harp frame it extends. A method of constructing the wire harpframe istoengagethewire fromwhich the harp frame is formed, while still in a straight condition, through the opening I4 and then.

bending the ends and the sides into a proper shape. A washer/l0 is .slidably mounted upon the'stud llandisforthepurpose ofresting40 against the'upper portion of the. wire frame.

A resilienteiement 2! is also mounted upon the stud ll andacts betweenthestudandthewasher 20 for frictionally controlling the swiveling of thestud Iiuporn the wireframeil.

The resilient element 2| does not directly enegage against an abutting porlon of the stud but actsagainstacasingflwhichisalsoarranged slidabiy upon the stud ll but in turn against a protuberance or enlarged portion .upon the stud. The resilient element 2! is in the form of a conventional flat split lock washer. 'lheannularmemberiSisaidaptedtomgage over the enlarged member "and to directly engage against the top of thecasing 22. Thevcasingfl isformedfromaflatdiscwhichhssits ends turned downwards so as to-cover the resillent member 2| and the 20, a knohll threadediy engages upon-athreaded projecting from the top of the 23; t

LOne of the features of this invention is the fact that the knob 24 may be turned over down upon the threaded portion 25' for the purpose'of urging or pressing the annular member 8 against the casing 22 for compressing and adding more tension to the resilient element 2| which in turn will transfer the stress to the washer 2| acting against the frame II and so aid in controlling the frictional resistance of swiveling of the stud l8. A resilient means is also provided for adjust- :ing or varying the pressure of the resilient element II. This latter means comprises can; portions 2. formed upon the bottom face of the washer 2| and comprising a portion on each side of the bottom face of the washer 2|! relative to the wire frame ll. These portions are included in a manner so that as the washer 20 is turned to the various rotative positions out portions of the bottom face thereon will act against the wire frame H and so compress or release the resilient member I i. The periphery, of the washer 20 is formed with several cutout portions 28 adapted to be engaged by a suitable turning tool so that the washer may readily be turned to any adjustable position. These cutouts ili are arranged in diametrically opposite pairs and it is advisable that the turning tool engage one of the pairs to grip the washer for the turning. In Fig. 4 a perspective view of the swivel harp fixture has been disclosed in which the lamp shade and the' knob 24 is removed. This view is shown so that the shapes of certain of the parts may be readily understood.

In Figs-5 and 6 another form of the invention has been disclosed wherein a swivel harp frame ll consisting of an upper section 21 and a lower section ll plvotally connected with a joint 29 or with the

sections

21 and 28 may be set at various inclinations to each other. The joint 29 includes a screw II adapted to clamp the sections in adjusted positions.

A stud II is formed with an opening 32 through which the upper portion of the frame section 11 passes. A washer 33 is arranged upon a stud 3i and frictionally engages against the upper portion of the frame section 21 for frictionally holding the stud from swiveling. The 'stud ii is formed with an enlarged portion 3! immediately above the washer 33 so as to hold the washer in position. The upper portion 35 of the stud is threaded for receiving a knob such as 2!, previously described. In other respects this form of the invention is similar to the preferred form and similar parts may be recognized by corresponding reference numerals.

In Fig. '1 another embodiment of the invention has been disclosed which is similar to the form illustrated in Figs. 5 and 6 but distinguish merely in the, construction of the wire harp frame ll. This frame is similar to the frame ll except for the lower ends thereof whichare pivotally connected with the bracket is by the pintle bolts 30. These pintle bolts are adapted to clamp 66 the frame ll!- at various positions upon the bracket" II. In other respects, the construction is identical to that previously described, and the similar parts may be recognized by the corresponding reference numerals. g

In Fig. 8 another embodiment of the invention has been disclosed wherein a stud '31 is shown jswivelly mounted upon the wire frame I4 and is shown formed with an enlarged portion 38, asecond enlargedportion 39, and a top threaded 1 portion II. A washer 20* engages upon the stud the lamp shade are not given.

31? against the shoulder formed by the bottom side of the portion 38. This washer 20' has its lower face formed with the ca n surface 2.. The arrangement is such that the washer may be turned to various rotative positions for the purpose of controlling the tension between the washer and the frame II as previously described.

A second washer ll engages upon the enlarged portion 39 which is of a slightly smaller diameter than the portion it so that a shoulder is formed constituting the top surface of the portion 3| upon which the washer ll rests. The annular member it engages over the portion 39 and rests against the washer ll. This annular member If is formed with a radial arm H. The details of A knob 20 is shown threadedly engaging the portion ll and I urging the annular member it against the' washer ll.

In Fig.9 another modified form of the invention has been disclosed wherein a :stud 42 is shown formed with an opening 43 by which it is mounted upon the frame II. This stud is formed with an enlarged'portion 4'4 and a resilient element in the form of a lock washer 5 acts against the shoulder formed by the bottom face of the enlarged portion 44 and a washer mounted slldably upon the stud 42 immediately against the upper side of the frame II. This washer III is formed with the cam faces 20' as previously described. The arrangement is suchthat the washer 20 may be turned for controlling the pressure against the frame ll and so control the swiveling of the stud C2. The upper end of the stud 42 is formed with a threaded portion 6 for a knob as previously described.

In Fig. 10 another" modifled form .of the invention has been disclosed wherein. a stud 41 is shown with an opening 48 through which a portion of the frame it passes so that the stud is swivelly mounted upon the frame. A washer 20 is rotative upon the stud 41 and has the cam surfaces 20 on its bottom face as previously described. The stud is provided with an enlarged portion is. A washer is slidable upon the stud l1 and engages against the shoulder formed by the bottom face of the enlarged portion 49. An expansion spring ii is disposed between the washers 50 and II and serves to urge the washer 20 against the frame I.

The upper portion of the stud is formed with a threaded portion 52 in the knob as previously described. The spring 5| constitutes'the resilient element for urging the washer 20 against the frame I.

Afeature of the invention is that the stud may be placed to various positions upon the frame, that is inclined positions for the purpose of holding the lamp shade 15 at various inclined positions. 'The resilient elements which function to frictionally hold the stud in adjusted positions serves to maintain and hold the stud even though the lamp may be used for a considerable length n of time and the opening in the stud through While I have illustrated and described the preferred embodiment (if my invention it is to be understood that I do not limit myself to the precise construction herein disclowd and the right is reserved to all modifications and changes com- 15 some ing within the scope of the invention as defined, in the appendedclaims.

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is:

l. A swivel harp fixture for an electric lamp, comprising a wire harp frame having a portion passing through a stud for swivelly supporting the stud, a washer slidable on said stud and resting against a portion of said frame, and .a resilient element on said stud acting between said stud and washer for frictionally controlling the swiveling of the stud on said frame.

2. A swivel harp fixture for an electric lamp, comprising a wire harp frame having a portion passing through a stud for swivelly supporting the stud, a washer slidable on said stud and resting against a portion of said frame, and a resilient element on said stud acting between said stud and washer for frictionally controlling the swiveling of the stud on said frame, said wire harp frame comprising a piece of wire engaging through said stud and bent at the ends and connected with a supporting bracket.

3. A swivel harp fixture for an electric lamp, comprising a wire harp frame having a portion passing through a stud for swivelly supporting the stud, a washer slidable on said stud and resting against a portion of said frame, and a resilient element on said stud acting between said stud and washer for frictionally controlling the swiveling of the stud on said frame, said washer being formed with a cam portion upon its bottom face and being rotative upon said stud for controlling. the' pressure and thus the friction between the washer and the frame.

4. A swivel harp fixture for an electric lamp,

comprising a wire harp frame having a portion passing through a stud for swivelly supporting thestud, a washer 'slidable on said stud and resting against a portion of said frame, and a resilient element on said stud acting between said stud and washer for frictionally controlling the swiveling of the stud on said frame, said washer. being formed with a cam portion upon its bottom I face and being rotative upon said stud for controlling the pressure and thus the friction between the washer and the frame, said washer being formed with several peripheral cutout portions to facilitate gripping of the washer for its rotation.

5. A swivel harp fixture for an electric lamp, comprising a wire harp frame having a portion passing through a .stud for swivelly supporting the stud, a washer slidable on said stud and resting against a portion of said frame, a resilient element on said stud acting between said stud and washer for frictionally controlling the swiveling of the stud on said frame, and a casing on said stud for extending over said resilient element.

6. A swivel harp fixture for an electric lamp, comprising a wire harp frame having a portion passing through a stud for swivelly supporting the stud, a washer slidable on said stud and resting against a portion of said frame, a resilient element on said stud acting between said stud and washer for frictionally controlling the swiveling of the stud on said frame, and a casing on said stud for extending-over said resilient element, said casing being located between said resilient element and a protuberance upon said stud. i

7. A swivel harp fixture .for an electric lamp, comprising a wire harp frame having a portion end of said stud being formed with a threaded portion, and a knob engaging said threaded portion for clamping against an annular member of a lamp shade for urging the annular member against the casing and so functioning against resilient elements for controlling the pressure thereof.

8. A swivel harp fixture for electric lamps, comprising a wire harp frame having a portion passing through a stud for swivelly supporting the stud, a washer on said stud'and resting against a portion of said frame and against a protuberance on said stud, a second washer resting upon the other side of said prov tuberance, a smaller sized portion on the top of said protuberance and a threaded portion from said latter mentioned portion.

9. A swivel harp fixture, for an electric lamp comprising a wire harp frame having aportion passing through a stud for swivelly supporting the stud,a washer slidable on said stud and resting against a portion of said frame, and a resilient element on said stud acting between said stud and washer for frictionally controlling the swiveling of the stud on said frame, said stud being formed with an enlarged portion, and saidresilient element acting against said enlarged portion and said washer.

' 10. A swivel harp fixture for an electric lamp, comprising a harp frame having a portion passing through a stud for swivelly supporting the stud, a washer slidable on said stud and resting against a portion of said frame, and a resilient element on said stud acting between said stud and washer for frictionally controlling the swiveling of the stud on said frame.

11. A swivel harp fixture for mounting a shade on an electric lamp, comprising a wire harp frame, a stud adjustably mounted on a portion of said frame for supporting said shade, a washer mounted on said stud, and shoulder means forming a permanent part of said stud for holding said washer in frictional. engagement with said frame and for supporting said lamp shade.

12. A swivel harp fixture for mounting a shade on an' electric lamp, comprising a wireharp frame, a stud adjustably mounted on a portion of said frame for supporting said shade, a washer mounted on said stud, means for removably attaching said shade on said stud, and shoulder means independent of said shade attaching means and forming a permanent portion of said stud for holding said washer in frictional engagment with said frame.

13. Aswivel harp fixture for mounting a shade on an electric lamp, comprising a wire harp frame, a stud adjustably mounted on a portion of said frame for. supporting said shade, a washenmounte'd on said stud, threaded means for removably attaching said shade on said stud, shoulder means between said washer and said threaded means and forming a permanent portion of said stud for holding said washer in frictional xengagement with said frame in relationship independent of said threaded means. KORNEL BERGER.