US1332214A - A corpora - Google Patents

Description

H. A. HARRIS.

LIGHTING FIXTURE.

APPLICATION FILED MAYZI Patented Mar. 12, 1920.

2 SHEETSSHEET 1 H. A. HARRIS. LIGHTING FIXTURE. APPLICATION FILED MAY 21,

Patented Mar. 2, 1920.

2 SHEETS-SHEET 2- UNITED STATES PATENT OFFICE.

HERBERT A. HARRIS, BF PITTSBURGH, PENNSYLVANIA, ASSIGNOR, T0 BEARDSLEE GHANDELIER MANUFACTURING COIVIPANY, OZ? CHICAGO, ILLINOIS, A CORPORA- TION OF DELAWARE.

LIGHTING-FIXTURE.

Application filed May 21, 1918.

1 b all whom it may concern:

Be it known that I, HERBERT A. HARRIS, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and tit-ate 01 Pennsylvania, have invented certain new and useful Improvements in Light ing-Fixtures, of which the following is a description, reference being had to the accompanying drawings, which form a part of my specification.

My invention relates more particularly to means for supporting or holding the globes or shades of lighting fixtures and more espe cially of the closed type of shade in the nature ot a bowl or globe, employed in connection with ele-tric light fixtures; the invention having for its object the provision of a screwlcss holder or suspending means adapted to take care of the expansion and :ontraction of the glass so to insure the globe or shade being maintained or secured in place during the varying conditions or temperatures to which the lixture is subjected; a further object being to provide a fixture wherein the globe or shade may be quickly put into place and also released to permit acress to the lamp when occasion requires.

The object and advantages or my invention will be more readily comprehended from the following detailed description of the drawings, wherein Figure 1 is a setional elevation of a suspended fixture, with portions broken away to disclose the internal construction.

Fig. 2 is across sectional view taken on the line 22 of Fig. 1 looking downwardly.

Fig. is a cross sectional view, taken at a point slightly below the sectional line 22 of Fig. 1 and within the outer casing or shell, to illustrate the lamp-socket holding portion or element of the fixture.

Fig. 4c is a detail perspective view of a portion of the holding means; namely the regulating or adjusting portion. ther Fig. 5 is a partial side elevation and sectional view with portions broken away. die closing modified form of shade or globe holder; with the releasing and inserting po sition of the globe shown in dotted lines.

Fig. l a sectional view taken on the line 66 ct Fig. 5 looking upwardly, with the lamp and lamp-sorket omitted.

In the particular exemplifi ation of the invention disclosed in the first four figures of the drawings, 10 illustrates a suitable Specification of Letters Patent.

Patented Mar. 2, 1920.

Serial No. 235,768.

style of canopy or shell adapted to fit up against a ceiling about the point where the lead lines or electric wires are located; the wires being usually brought into a suitable conduit-box or nipple, preferably provided with an externally threaded portion to receive the internally threaded thimble or female member 11, through which the lead lines are passed; the Wires being then conducted through the threaded member or tube 12 and secured to the upper section of the lamp-socket member 13. The female member 11 is provided with a pair of laterally disposed arms, one of which is shown at 11 in Fig. l to receive the supporting screws or bolts indicated at 15, see Figs. 1, 2 and 3. The head portions of the screw-bolts are disposed downwardly and engage with the disk or plate member 16, which latter is provided with the radially disposed lobes or cars at 17, see Figs. 2 and 3; the lobes or ears 17 being preferably provided with the slots of smaller dimensions than the heads of the bolts 15 to prevent the passage of the heads through the slots; the latter being disposed in opposite dire-tions, as shown at 18 in Figs. 2 and 3, so that a slight twisting movement of the disk or plate member 16 will permit the ready adjustment and removal of the disk or plate member.

The disk or plate member 16 at points disposed circumt'erentially intermediate of the lobes or cars 17, is provided at diametrically opposite points with radially disposed lugs 19 arranged in pairs, as more clearly shown in 8. Pivotally secured between the lugs 19 of each pair is an arm or pawl 20 of suitable length so as to extend a considerable distance beneath the points where the arms or pawls 20, 20 are pivoted, to en- J able the lower ends thereof to extend into the orifice or neck of the suspended shade or globe indicated at 21. The lower ends of the pawls or arms 20, 20 are shown disposed laterally at an angle and each provided with a segmental flanged member or skirt portion 22 having a downwardly and outwardly curved or flared portion adapted to I term contact or supporting relation with the inner side of the globe 21, at a point slightly beneath the narrowest part of the orifice or neck of the globe, as shown in Fig. 1, so that when the pawls or arms 20, 20, with their segmental members or skirts 22, 22 are distended or moved into separated relation, a

firm holding relation with the globe 21 will be effected and prevent the globe from becoming disengaged from the fixture.

The pawls or arms 20, 20 are provided with short portions or ends 23 extended above the pivotal points 21 and preferably curved slightly inward, as shown in Fig. 1, providing means whereby the pawls or arms 20, 20 may be controlled, and the latitude of arm movement within the limited area inireased. The upwardly disposed ends 23 of both arms 20, 20 extend into the elongated slot of a yoke member 25, shown in perspective in Fig. 4.

The yoke or member 25 and the slot therein are slightly enlarged intermediate of the ends to permit the passage of the threaded member or tube 12, as more clearly shown in Fig. 2, and also allow a slight movement of the yoke or member One end of the yoke or member 25 is preferably extended or provided with a nipple portion 26 adapted to extend through a suitable opening in the canopy member or shell 10, see Fig. 1; the nipple or extension 26 being internally threaded to receive the thumb-screw 27 which is of a length to adapt it to engage with the upper curved end 23 of the adjacent pawl or arm 20. The enlarged intermediate portion of yoke member 25 is greater than the diameter of the threaded tube 12, in order to permit laterally sliding movement of yoke member 25 when thumb-screw 27 is manipulated.

It is apparent from the construction shown that by screwing thumb-screw 27 inwardly, So as to be in operative contact with portion 23 of adjacent arm 20, the latter will be swung about its pivotal point 24 and cause the lower end thereof to be brought into contact with the inside of the globe 21. The contact between screw 27 and the upper portion of the adjacent arm 20 will induce yoke or member 25 to move in a lateral direction, namely toward the thumb-screw 27 and thereby cause the opposite end of yoke or member 25 to operatively engage with the portion 23 of the pawl or arm on the side of the fixture farthest removed from the thumb-screw 27, thus causing said arm to swing outwardly, thereby bringing its lower end into holding engagement with the globe or bowl 21.

The arms 20, 20, at points coincident with the lugs 19 of disk or plate member 16, are preferably provided with the arcuate shoulders 28, disposed laterally and adapted to provide suitable support for the yoke or member 25. to permit the latter to move laterally on the shoulders 28; the end of the yoke or member. opposite to the end provided with the thumb-screw 27, being also referably provided with an extension or 11g 29 adapted to rest on the shoulder 28 of the arm 20 disposed on the same side of the vertical axis of the fixture.

The glol')e-holding elements and lampsocket are all preferably incased in a suitable metallic shell 30 of suitable configuration and provided with a depending flange at the lower end adapted to extend over the neck of the globe or shade 21 of the fixture; while the upper end is preferably provided with a circumferential shoulder 31 at a slight distance removed from the upper end, to provide a suitable support or seat for a flanged ring or member 32 of such diameter as will provide a slight intervening ventilating space intermediate of the ring or member 32 and the shell 30; which latter, at a point just beneath the shoulder 31, is preferably provided with a suitable number of openings or vents in the usual manner; the ring or member 32 being adapted. to overlap the opening, or vents and prevent the egress of light rays.

The upper end of the shell 30 has an opening. coincident with the opening in canopy or member 10, for the passage of the nipple or extension 26 of yoke or member 25; said opening being suflicient to permit slight lateral movement of the yoke mem ber The upper end of shell 30 is perforated for the passage of the threaded tube 113; and the proper relation of the shell and the elements within are maintained by the nuts 33 and 3t screwing onto the tube 12.

\Vith the arms 20 provided with the segmental portions or skirts 22, it is apparent that a support throughout a considerable portion of the globe 21 is obtained see Fig. 2; which, taken in conjunction with the overlappin skirt or flange of shell 30 will maintain the globe in proper position.

It is also evident from the construction that my improved holding or supporting means is adapted to varying sizes of globes or shades. as the short upwardly, extending portions 23 of the arms 20, in conjunction with the comparative lon slot in the elongated yoke or member 25, give great latitude to the long arms.

In Figs. 5 and 6. I illustrate a modified form of fixture, wherein the globe-holding element is of a permanent on non-collapsing nature and comprises the shell member 'lhe fixture illustrated in these figures comprises the canopy 36 which usually surrounds the conduit-box and onnections dis posed through the ceiling; the conduit be ing disclosed in th form of a threaded tube at 37, to which is shown secured the flanged collar or plate 38. from which the shell member 35 is shown su pended by means of bolts 39 (only one of which is shown). and the elongated nut-member or sleeve 40.

The skirt or flared portion of shell mem ber is cut away segmentally as shown at the points 35. thereby providing the two parallel sides. as more clearly shown in Fig. 6. It will be apparent from the construction that the globe all may be put into place by merely holding it at an inclination, as shown in dotted lines in Fig. 5, which enables the globe to be shpped over the lower oblong portion of the shell member 35, in view 01 the parallel sides; while the flared or Skirt portions 35 at diametrically opposite points, will engage beneath the rim or neck of the globe 41, as shown. and maintain the globe in place and proper suspended position.

The fixture is preferably provided with the flanged ring or narrow shell 4-2, the upper end whereof is adapted, when in place, to engage with shell 35, while the lower end is 01 increased diameter and is adapted to fit over the upwardly disposed neck or flange portion of the globe n. This ring if] is, of course, inserted into place before shell 35 is secured to canopy 36; and the ring 42 is held up out of normal position while globe 41 is slipped onto shell or member Eli Having inserted globe ll over the skirted portion-of shell 35, ring 4-2 is then dropped lown into place, as shown in 5, and the ring, in conjunction with the shell 35, will prevent any displacement of the bowl. as well provide a finished effect to the fixture.

It is apparent front the constructions shown in both Figs. 1 and 5, that the holding means or skirt portions will permit expension and contraction of the globes and yet constantly remain in complete holding relation with the globe. This condition, howe er. is not the case with the screw-type of holding means at present employed, as; it has been found in practice that the metal, durinc; excessive expansion, becomes distorted or sprung to such an extent that the holditur screws,--which normally have but slight purchase on the globe, because of the shallow groove in the neck of the globe. will be out of holding contact with the globe when the latter contracts, with the result that considerable breakage and damage has resulted in the use of such constructions.

The flared portions or skirts 22 of the construction shown in Fig. 1 and 35 of the construction shown in Fig. 5, extend considerablc distances beyond the orifices of the globes. so that any unequal expansion that mioht occur between the glass and metal,

' will nevertheless be taken care of and disenconstructions, however, the globe will not only be securely held in place, whether expanded or contracted, but the globe may at the same time be readily removed to permit access to the lamp as occasion may require, without the necessity of manipulating a number of screws or other holding elements; and while I believe the constructions shown and described to be the simplest embodiments of my invention, certain alterations may be made without, however, departing from the spirit or my invention.

l vhat I claim is 2- 1. In a lighting fixture of the class de scribed, a globe-holder comprising}; a shell adapted to inclose the lampsocket of the fixture, the lower end of said shell being formed to extend exteriorly about the neck of the xture-globe or shade, a pair or" adjustable members pivotally mounted in said shell so as to swing laterally, the lower ends of said members being adapted to extend into the globe or shade and engagewith the inner wall thereof, and regulable means having operative relation with both of said members and controllable from the fixture exteriorly whereby the lower ends of said members may be moved into distended or contracted relation with each other.

2. In a lighting fixture of the class described, globe-holding means comprising an outer member or shell adapted to inclose the lamp-socket of the fixture and engage with the outside of the globe or shade, a pair of members pivotally mounted in said shell, the lower ends of the members being adapted to extend into the globe and engage with the inner wall thereof, the pair of members being extended above their pivotal points within the shell, and means, controllable from the fixture exterior and in operative relation with the upwardly disposed ends of said pivoted members, whereby the sepa rated condition of the members may be regulated and their holding relation with the globe may be controlled.

3. In a lighting fixture of the class described globe-holding means comprising an outer shell adapted to inclose the lamp socket of the fixture, a pair of arms pivotally mounted intermediate of their ends within said shell at diametrically opposite points, the lower ends of the arms being adapted to engage with the inner wall of the globe, a slidable member encircling the upper ends of said arms. and adiustable means, operable from the shell exterior and having controlling relation with said slidable member and the adjacent arm whereby the position of the lower ends of the arms may be controlled.

4-. In a lighting fixture of the class described, a supporting bracket member, a socket-holding member removably secured to said bracket member, a pair of arms pivotally secured intermediate of their ends on said socket-holding member, an outer shell inclosing the aforementioned elements and arranged to engage with the outside of the globe, and means, controllable from the shell exterior and in operative relation with the upper ends of said arms, whereby the position of the lower ends of the arms may be regulated.

5. A fixture of the class described, comprising a supporting bracket, a socket-holding member removably suspended from said bracket, a pair of arms pivotally secured to said socket-holding member at (llftl'l'letIlCfllly opposite points and provided with upwardly disposed portions above the pivotal points while the lower ends of the arms are pro vided with segmental skirts or flanged por tions adapted to engage with the inside of the globe, a yoke member extending about the upwardly extended portions of said arms and in sliding relation therewith, and an adjustable member having operative relation with the yoke member and the upper end of the adjacent arm whereby the distended condition of the lower ends of the arms may be controlled.

6. A fixture of the class described, comprising a supporting bracket through which the eleztric wires are adapted to pass, a socket-holding member, adjustable means adapted to form connection between the bracket and said socket-holding member, a pair of arms pivotally secured adjacent their upper ends at diametrically opposite points on said socket-holding member, while the lower ends of said arms are adapted to extent into and engage with the inside of the globe, an outer shell surrounding said socketholding iziember and arms and arranged to engage with the outside of the globe, and means having controlling relation with the ends of the arms above the pivotal points thereof and disposed through an opening in said shell whereby the position of said arms relative to the inner side of the globe may be controlled.

7.111 a fixture of the class described, globe-holding means comprising an outer shell adapted to extend about the orifice of the globe of the fixture, a pair of arms pivotally mounted within the shell at diallltll'lCllly opposite points, said arms being provided with upwardly disposed and inwardly curved extensions above the pivotal points thereof, the arms being provided with shoulders at points coincident with the pivotal points, a slotted member slidingly uounted on the shoulders of the arms, with the upwardly disposed portions of said arms extending through the slot in said member, while a portion of said member extends through the side of the shell, and a screw-member threaded in the last mentioned portion of said slid-ably mounted member and arranged in controlling relation with the upper end of the adjacent arm whereby the holding relation of the arms with the globe may be determined HERBERT A. HARRIS.

\Vitnesses llonnn'r F. MORRIS, Jr., E. F. DAUME.

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