US2136369A - Lamp fixture - Google Patents

Description

Nov. 15, 1938.. w BELCHER 2,135fi69 LAMP FIXTURE Filed July 9, 1937 3 Shets-Sheet 1 In Denier 1938. w. .E. BELCHER 2,136,369

LAMP FIXTURE Filed y 9, 1937 5 imam-Sheet 2 A iiomeys Nov. 15, 1938. w. E. BELCHER 2,136,369

LAMP FIXTURE Filed July 9, 1957 3 Sheets-Sheet 5 Inventor A iiorneys Patented Nov. 15, 1938 PATENT OFFlC LAMP FIXTURE Walter E. Belcher, Tacoma, Waslu, assignor of one-half to A. W. Pratt, Seattle, Wash.

Application July 9, 1937, Serial No. 152,813

1 Claim.

This invention relates to new and useful improvements in lamp fixtures.

The principal object of the present invention is to provide a lamp fixture wherein a switch is operated by moving a standard portion of the fixture with which the switch is connected.

- Another important object of the invention is to provide a switch for lamps of the stand type,

such as fioor lamps, table lamps and the like wherein the standard or post portion thereof can be conveniently rotated for the purpose of operating the switch for the lamps.

Other important objects and advantages of the invention will become apparent to the reader of the following specification.- I

In the drawingsy Figure 1 represents a side elevational view of a table lamp with the standard thereof shown in section,

Figure 2 is an enlarged vertical sectional view through the switch mechanism of the lamp fixture shown in Figure 1.

Figure 3 is a horizontal sectional view on the line 33 of Figure 2.

Figure 4 is a horizontal sectional view on the line 4-4 of Figure 2. t

Figure 5 is a fragmentary side elevational view showing a relationship of the rotatable annulus with one of the ratchet collars.

Figure 6 is a diagrammatic view disclosing the electrical connection between the electrical devices involved.

Figure 7 is a bottom plan view of the shell of the switch. 7

Figure 8 is a fragmentary detailed sectional view.

Referring to the drawings wherein. like numerals designate like parts, it can be seen that numeral 5 represents the lamp base from which rises the conductor conduit 6 extending upwardly through the switch mechanism generally referred to by numeral 1 located in the fixture shell 8 of the lamp fixture. The shell 8 is provided with the depending cap portion 9 having a skirt In for disposition over the upper end of the rotatable sleeve II, which sleeve may be of any ornated design on its outer surface, the lower portion of which fits over the boss l2 on the base 5. A rubber bushing 13 is snugly disposed within the upper portion of the sleeve II and snugly hugs the barrel 14 of insulation which extends upwardly into the shell I5 of the switch structure 1. The lower reduced portion a. of the shell 15 rests upon the bottom of the fixture shell 8 and is notchedas at It to receive a suitable boss formation (not shown) on the bottom of the shell 8 so as to prevent rotation oi'the shell ll.

A fitting. I1 is provided at the top of the condult 6 through which conductors extend to the s lamp socket 18 mounted above the shell 8.

Three outwardly extending and curved arms l8 are provided on the shell 8 and each is equipped with a socket 20 at its outer end for receiving a bulb. 10

The lamp shown in the drawings consists of three small power bulbs 2|, 22 and 28 for the sockets 20 and the bulb 24 for the socket l8 which has the two filaments 25 and 26 therein. (See Figure 6.) 15

At this point, it can be seen that by rotating the sleeve ll, motion is transmitted by way of the resilient'bushing 13 to the barrel l4 and from there to the switch mechanism inside of the shell l5. (See Figure 2.)

Freely rotatable on the upper portion of the barrel l4, that is, the portion within the shell I5 are the ratchet collars 21-28. The ratchet collar 21 is provided with the cam-like ratchet formations 29, 30, 3| and 22. The formations 30, 25 3| and 32 each has a conductor strip 33 thereon, while the formation 29 does not have a conductor strip.

The cam-like ratchet'formations on the lower ratchet collar 28 are disposed in the opposite direction from the formations on the collar 21, the formations 34, 35 and 36 being provided with conductor strips 31, while the formation 38 is free of any conductor.

Obviously, the ratchet collar 21 takes care of 5 the lamp 24, while the ratchet collar 28 takes care of the lamps 2i, 22 and 22.

As can be seen in Figure 2, an annular wall 39 is disposed into the shell l5, and vertically extending ribs 40 on the inside of the shell I 5 40 serve to space the wall 39 from the shell proper so as to aiford a space 4| through which the various conductors 42 can be disposed.

As is shown in Figure 6, spring contact fingers 42, 43 and 44 are provided for wiping engage- 45 ment with the conductor strips 33. The positive side of the current supply 45 connects to the contact finger 42, while a jumper 46 extends from the contact member 43 to the filament 26. The return wire is denoted by numeral 41 while a jumper 48 extends from the contact finger 44 to the filament 26. Figure 6 also shows the ratchet collar 28 provided with the spring contact fingers 49, 50 and BI secured to the wall 39 and these are connected 5 to the lamps ii-22 and 23 as disclosed in Figure 6.

An annulus 52 is secured to the upper end portion of the barrel H (see Figure 2) between the collars 2'l28 and this is provided with an upwardly curved lug ll secured to its top side and a downwardly curved lug 54 secured to its underside.

It will be observed in Figures 2 and 8, that the conductor strips 33 and 31 on the collars 21 and 28, respectively, are bent inwardly against their sides opposed to the annulus}! as denoted by reference character 52a where they are provided with lugs with which the corresponding lugs 53 or 54 can engage depending upon the direction in which the annulus 52 is rotated.

Thus it can be seen, that by rotating the barrel il in one direction, the upper collar 21 will be caught by the lug I and rotated against the contact fingers l2, l3 and 44 for turning one or both of the filaments IP28 on or entirely shutting oil! the lamp.

By reversing the motion or the barrel I, the collar 28 is rotated by turning oi! the lamps Ii22--23 or turning the same on.

When the sleeve is rotated in one direction, the barrel II is rotated as the bushing i3 fits sumciently snug between the sleeve H and the barrel I 4 to make suitable connection causing the barrel to rotate with the sleeve H. The barrel II in rotating carries with it the annulus I2 which has the finger I! on its upper side and the finger 54 on its underside. The bottom side of the collar 21 and the top side oi the collar 28 has the portions 52a 0! its contact strips formed with lugs 55 each lug having a beveled side and a shoulder-like side. When the barrel H is r0 tated in one direction the fingers 53, which are of spring material will ride under the lugs 55, of one of the collars 21 while the other spring finger will move against the shoulder sides of the lugs 55 and thus, while one of the collars remains stationary, the other is rotated acting as a switch for the corresponding group of lamps. Obvious- 1y, rotation of the barrel ll by the shell I I, in the opposite direction will cause rotation of the annulus I! in the opposite direction, resulting in the engagement of the other finger 63 or 54 with the shoulder sides of the lugs 55 of the other collar 21 and in this manner a second group of lamps can be controlled.

While the foregoing specification sets forth the invention in specific terms, it is to be understood thst numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention what is claimed as new is:

A lamp fixture comprising a base, a conductor containing conduit rising from the base, a fixture shell, lamps supported by the shell, a switch structure in the shell for controlling a source of current to the lamps, said switch structure including a contactor, a barrel extending irom the eontactor and having the conduit extending therethrough, a rotatable sleeve through which the conduit extends and into which the barrel depends, and a plug in the rotatable sleeve adapted to retain the rotatable sleeve and barrel to rotate together, said rotatable sleeve being adapted to be rotated to operate the barrel and the contactor by way of the said plug, said switch including two groups of stationary contacts and two groups of contacts carried by the barrel, and means M: with the contacts constructed and arranged to connect a source of current with one group of lamps when the rotatable sleeve is rotated in one direction and to connect a source of current with other or the lamps when the rotatable sleeve is rotated in the opposite direction.

WALTER E. BELCHER.

Images