US1123757A

US1123757A - Lamp-holder.

Info

Publication number: US1123757A
Application number: US82255714A
Authority: US
Inventors: Herbert S Knerr
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-03-05
Filing date: 1914-03-05
Publication date: 1915-01-05
Anticipated expiration: 1932-01-05

Description

H. S. KNERR.

LAMP HOLDER.

APPLICATION FILED MAR. 5, 1914v LWSHWK Patented 'Jan. 5, 1915.

w vbmeooeo HERBERT 5. KNERR.

all

LAMP-HOLDER.

application filed March 5, 191%. Serial No. 822,557.

To aZ-lmrhom it may concern:

1&8 it known that T, HERBERT S. KNERR, a citizen of the United States, residing at Dayton. in the county of Montgomery and State'of Ohio, have invented certain new and useful Improvements in Lamp-Holders and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains. to make and use the same, reference being had: to the accompanying drawings, and to the letters and figures of reference marked thereon, which form. a part of this specification.

This invention relates to new and, useful improvements in adjustable holders for incandescent lamps.

One object of the invention is to provide a device of the above type which is simple in construction and easily adjusted.

Another object of the invention is to provide a lamp bracket in which the axes of the various parts thereof may be adjusted to any angle relative to each other and which may be held in said adjusted positions by the aid of a single clamping member.

Referring to the accompanying drawings. Figure v1 is a side elevation of my improved lamp holder: Fig. 2 is a section on the line 'aa of Fig. 1; Fig. 3 is a section approximately on the line b--b of Fig. 2; Fig. 4 is a section on the line cc of Fig. 3; Fig. 5 is a plan view of the lamp socket clamping member; Fig. 6 is aview similar to Fig. 3

showing a modified construction; and Fig.

7 is a detail perspective view of an'intervening plate used in the construction shown in Fig. 6. v

In the specification and drawings, similar reference characters indicate corresponding arts. p Referring more particularly to the drawings, 1 represents the well known incandescent lamp mounted in a socket 2 and provided with a shade 3. The socket2 is adapted to be engaged by a clamping member consisting of a loop 4 which extends from parallel members 5. The parallel members 5 are provided with eyelets 6 which receive a bolt 7 having a thumb-nut S. Said bolt 7 extends through an eyelet 9 on the end of a rod 1.0. Said rod 10 is slidably mounted in and extends through a slot 11 in a bolt 12 provided with a head 13, and is suspended from a standard or supporting mem- Specificatioh of Letters Patent.

P entedd an. 5., rain.

her 1% through the 'agency of a clamp. The clamp consists of a. strap 15 which snrrounds the standard 14 on one side and is provided with projections 16 adapted to engage the head 13 of the bolt. The clamp also consists of a box 17 having a suitable opening through which the bolt 12 extends and which is adapted to engage the standard 1i on the side opposite the strap t5. The rod 10 lies. in the slot 11 between the box 17 and a washer 18' mounted on the bolt 12. Said bolt 12 is provided with a screwthreaded hand wheel 19 adapted to engage the washer 18. When the hand wheel 19 is tightened on the bolt 12, the washer 18and the rod 11 will be thrust in the direction of the standard 14 while the box 17 will be thrust in the same direction and will be clamped against said standard, and the strap 15 and the bolt 12 will be thrust in an opposite direction thereby firmly holding the rod 10 in any position to which it may be adjusted. It will be noted that by thus constructing a clamp the relative angles between the axes of the standard 14,,the bolt 12 and the rod 10 may be universally adjusted by means of a single clamping member, consequently, the. lamp 1 may be placed in any position. In addition to adjusting the relative angles between the various parts, the height of the lamp may be adusted by moving the clamp along the standard 1.4, while the distance the lamp is removed from the standard 14 may be adjusted by moving the rod 10 through the slot 11. It will, therefore, be seen that five different adjustments may be secured by the aid of a single clamping member. The position of the lamp 1 may be further adjusted by. the aid of the bolt 7 at the end of the rod 10. In some cases it is desirable that the lamp may be swung in a horizontal plane around the standard 14 without elevating or lowering the lamp or varying its distance from the standard 14. In this case an apertured plate 20, shown in detail in Fig. 7 is provided. The plate 20 is interposed between the projections 16 and the box 17, as is shown in: Fig. 6. Said plate 20 is of a thickness suflicient to prevent the box 17 engaging the standard 14 which permits the clamp to freely rotate on the standard. Said plate 20, however. does not prevent the rod 10 being clamped between the washer 18 and the box 17. The lamp will, therefore, when the plate 20 is used, be main- Whatever position it may be swung to around the standard 14:. When the plate 20 is used, the clamp and the parts supported thereby, are suspended'from the standard' 14 by the aid of a collar or head 21 on the lower end of the standard 14, it being contemplated that the standardll will be suspended vertically from above when the plate 20 is utilized. The collar 21 acts as a bearing for the clamp and prevents the clamp falling off of the standard it. While in the drawings I have shown the standard 14 as suspended from above, it is to be understood that when the clamp is used, as is shown in Figs.'1, 2- and 3, the said standard may be suspended or supported in any position, either from above, from below,

mounted horizontally from the wall, or may be placed at any angle.

Having described my-invention, I claim: 1. In a lamp holder, a supporting member, a strap engagingsaid supporting member on one side, a box mounted on the other side of said supporting member and inclosing the adjacent sides of said strap, a bolt extending through said box and the'head of which is in engagement with said strap, a hand wheel having a screw-threaded engagement with said bolt, and a lamp-supporting rod projecting through said bolt between the axis of the hand wheel and the axis of the box, substantially as specified.

2. In a lamp holder, a supporting mem ber, a strap engaging said supporting member and having laterally extended sides the ends -'of which terminate in angular projections, a bolt the head of which engages said angular projections, said bolt having an opening between the head and the screwthreaded portion thereof, a box inclosing the side extensions of said strap and through which said bolt projects, a hand Wheel engaging said bolt, and a lamp-supporting arm extending through the opening in said bolt, substantially as specified.

In testimony whereof I atfix my signature, in presence of two witnesses.

HERBERT S. KNERR. VflLIlG-SSBSZ MELLIE GALLowAY, ldA'rtrHnw SIEBLER.