US1936616A

US1936616A - Lamp stand

Info

Publication number: US1936616A
Application number: US648421A
Authority: US
Inventors: James H Boye
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-12-22
Filing date: 1932-12-22
Publication date: 1933-11-28
Anticipated expiration: 1950-11-28

Description

J. H. BOYE Nov. 28, 1933.

LAMP STAND Filed Deo. 22, 1932 Patented Nov. 28, 1933 Unirse STATES LAMP STAND James H. Boye, Chicago, Ill. Y

Appiieansn December 22, 1932 V Serial kNo. 648,421l

5 claims; (c1. 248-41) This invention relates to the art of electric floor lamps, and has reference more particularly to a new and improved stand for such lamps.

Electric floor larnps commonly comprise three main parts,-a base in the form of a heavy casting to afford stability, a stem comprising a section of gas pipe for the passage of the cord conducto-r and sheathed in ornamental spindle sections and breaks strung thereon, and a cluster head mounted on the upper end of the stem and carrying a cluster of lights.

Heretciore, so far as I am aware, the stein and base have been connected by the simple expedient of forming a tapped hole in 'the top of the base and screwing the threaded lower end portion of the stein into said hole after which the spindle sections and breaks were slipped over the stem h seating washers between, and the upper thi eaded end ci the stein was then screwed into a hickey in a sectional cluster head and tightened down by turning the cluster head. This construction has necessitated the complete assembling of lamp at the factory, making a bulky package, and making impossible a customers choice between diiierent styles oi head, stem and base at the retail store.

1n an application filed me on the 19th day of December, 1932, Serial No. 647,869, I have disclosed and claimed an improved cluster head construction designed to prevent strain on the cord connections, short circuits, and other injury when screwing and tightening the head on the stem, and also to prevent the parts of the head and stein from falling apart or becoming disassembled when the stern is disconnected from the head, thus permitting the head and stem to be packaged as separate, self-contained units. In this application I present a new and improved construction oi stem and base, wherein each of said parts constitutes a complete self-contained unit which may be packaged and sold separately, and is well, although not exclusively, adapted for use with the cluster head of niy aforesaid application; so that, when employed in conjunction with the latter, all three of the main component parts of the lamp (head, stern and base) may be separately packaged and sold as units, with the aclvantages of lig ter and less bulky packages, and a customers choice between different ornamental styles of head, stem and base for the make-up of the complete lamp.

Again, in the known manner of connecting the stein to the base above referred to, if the threaded hole in the base is not exactly perpendicular or VL normal to the base, the stem has a slant, and its top may be off two or more inches from its true position. If it be attempted tostraighten vthe stem by a side thrust thereon, this may put a, breaking strain on the thread and cause the stem to become loose in the base,-a condition that cannot be remedied by screwing the stern further down in the base. Furthermore, in the handling of the lamp between the factory and the user, and later in the moving of the lamp fromplace to place by the user, the base easily becomes loose on the stern, causing the latter to wobble more orv less until tightened up. The main object of the present invention is to provide a lamp stand construction that will entirely eliminate the above noted defects, insure a true vertical position of the stem on the base, provide a strong and rigid connectionoi the stem to the base that automatically centers andy straightens the stem on the base, make possible the easy tightening up of any locsenessfthat may develop, and permit the ready connection and separation of the stern, base and head so that the vlamp can be purchased in separate units, 'and later be assembled by the purchaser without the use of tools.

The present invention, in one practical embodiment thereof, is illustrated in the accompanying drawing, in which: 1

Figure l is an axial vertical'section through the stem and base of the lamp.

Figure 2 is an enlarged vertical section more fully illustrating the details of the separable connection of the stem to the base.

Figure 3 is a horizontal section on the line 3 3 of Figure 2, looking in the direction indicated by: 9 1 the arrows.

Figure 4 is a perspective View of aspindle` seat that is slidably secured on the lamprstem.

Referring to the drawing, 10 designates a hollow generally dome-shaped base casting,V inthe top wall 11 of which is formed a central hole12, preferably, and as herein shown, formed with a. tapered countersink 13. 14 designates the-stem of the lamp stand, consisting of a section'of gasv pipe of suitable lengthhaving upper and lower threaded end portions 14' and 15 respectively: The stem 14 is of lesser diameter than the hole 12 through which it passes. On the stem 14 is mounted a spindle seat 16 that is formed with a tapered lower side 17 that, as shown in Fig.'2,en gages and cooperates with the tapered countersink 13 of the hole 12. This spindle seat 16 has a sliding fit on the stem 14, but is confined against escape from the stem and is limited as to the extent of sliding movement. The means for ac- 119 complishing this, as herein shown, consists of a pair of opposed inset iiattened surfaces on the stem 14 that form upper and lower

transverse stop shoulders

18 and 19 respectively, and inwardly pressed lugs 20 on the inner periphery of the spindle seating member 16 that cooperate with the

stop shoulders

18 and 19 to both confme the spindle seat against escape from the stem and limit the sliding movement of the stem through the seating member.

On the under surface of the hollow base 10 is formed an annular seat 21, to which is fitted a flat plate in the form of a disc 22, said disc having a central hole 23 in vertical alignment with the hole 12 and of a size to slidably fit the stem 14. Through this hole 23 extends the threaded lower end of the stem 14, on which latter is screwed a wing nut 24 that cooperates with the disc 22 as an abutment.

Strung on the stem 14 are the usual spindle sections 25, breaks 26, and seating washers 27, which serve as an ornamental sheath for the stem. The lowermost spindle section 25 seats on the spindle seat 16 and top wall 11 of the base, thereby pressing the spindle seat 16 into its seat in the base and thus centering the stem 14 in the hole 12. On the upper end of the stem 14 is a pipe union 28, also having the function of a nut, between which and the spindle seat 16 the ornamental stem coverings are clamped and confined endwise. Into the pipe union 28k is screwed a threaded boss 29 on the lower end of the cluster head, a fragment of the cluster head being shown at 30.

In assembling the parts, the stem 14, with the spindle seat 16, sheath members, and pipe union 28 already applied thereto, is entered through the hole l2, the abutment disc 22 is then slipped over the lower threaded end of the stem and onto its seat 21, and the nut 24 is then applied and. turned up hard, which centers the stem on, and strongly and rigidly secures it to, the base, with the stern perfectly normal or perpendicular to the base. The head 30 is then screwed down tight into the upper end of the pipe union 28, and the assembly is completed. The stem 14 and its coverings are thusnot only centered and straightened to a true perpendicular position, but, by reason of the spaced bearings for the lower end of the stem in the base and the clamping action of nut 24, the stem is very rigidly and strongly held, and any looseness that may later develop can be readily taken up by merely turning the wing nut 24V up tighter, since the tension on the stem 14 is not 35.; resisted by the spindle seat 16.

iined on the stern',

jall be 'disconnected from Yeach other and separately packaged without dismantling either the head or stem assemblies. As above stated, this is a distinct advantage, because reducing the weight and sizes of the packages, and enabling customers to select desired styles of head, stem and base and take them home and assemble them.

It is believed that the foregoing description in connection with the drawing, will make clear how the described construction obviates the recited disadvantages of the existing art, and provides a lamp stand of such a construction and character that the stern will always stand true and vertical relatively to the base, will have a strong and stable connection to the latter, and

yet may be readily disconnected without disassembling the stem and its coverings. Believing that I am the first to provide a construction having these advantages, I do not limit the invention to the specific details shown and described, but reserve all such variations and modcations asfall within the spirit and purview of the appended claims.

I claim:

1. In a floor lamp stand, the combination with a lamp base formed with a hole in its top portion, of a lamp stem of lesser diameter than and extending through said hole, and tapered means permanently locked on said stern cooperating with said hole to center said stem in said hole.

In a' door lainp stand, the combination with a hollow-lamp base formed with a hole in its top wall, of a lamp stem of lesser diameter than said hole extending through and below the latter, tapered means permanently secured to said stem and cooperating with said hole to center said stein in said hoie, and means below said hole for securing-the lower end of said stem to said base.

3. In a door lamp stand, the combination with a hollow lamp base formed with a hole in its top wall, of a lamp stein of lesser diameter than said hole extending through and below the latter, a rigid spindle seat permanently secured to said stein, said seat having a tapered portion cooperating with said hole to center said stem in said hole, and means below said hole for securing the lower end of said stern to said base.

4. In a floor lamp stand, the combination with a hollow lamp base iormed with a hole in its top wall, of a lamp stem of lesser diameter than said hole extending through and below the latter and having a threaded lower end, a rigid spindle seat permanently and slidably secured on said stem, said seat having a tapered lower portion cooperating with said hole to center said stein in said hole, and means below said hole for securing v'said stem to said base, said means including a nut onV the lower end of said stem and a cooperating abutment in said base.

5. In a floor lamp stand, the combination with a hollow lamp base formed in its top wall with a hole having a tapered countersink, of a lamp stem of lesser diameter than said hole extending through and below the latter and having a threaded lower end, a rigid spindle seat permanently and slidably secured on said stem and formed with a tapered lower portion cooperating with the countersink of said hole to center said stem in Vsaid hole, and means below said hole for securing said stem to said base, said means including a nut on the lower end of said stem and a cooperating abutment in said base.

JAMES H. BOYE.