US2289105A - Lighting fixture - Google Patents

Description

July 7, 1942. L. c. DOANE 2,289,105

LIGHTINGFIXTURE Filed Dec. 21, 1938 I 2 Sheets-Shea?l l ATTORNEY July 7, 1942. l.. c. DQANE- l2,239,105l

LIGHTING FIXTURE Filed Dec. 21, 1938 2 Sheets-Sheet 2 BYMMAM] ATTORNEY Patented July 7, 1942 UNITED STATES PATENT OFFICE LIGHTING FIXTURE Leroy C; Doane, Meriden, Conn., assigner to The Sight Light Corporation, Essex, Conn., a corporation of Connecticut Application December 21, 1938, Serial No. 246,944

9 Claims.

Figure 8 is a vertical sectional View taken on the line 8 3 of Figure 3;

Figure 9 is a side elevational view of a modied form of construction;

Figure 10 is a Vertical sectional View taken on the line lll-l ii of Figure 11;

Figure 11 is a horizontal sectional View taken on the line ll--II of Figure 10;

Figure 12 is a vertical sectional View taken on zontal arc. lo the line |2'-I 2 of Figure 9; and

The present invention also contemplates l'ix- Figure 13 is a View showing the light controltures of this type in which the arm can also be ling elements 0f the Structure 0f Figure 9 deswung in a vertical plane so as to be brought from tached. the normal horizontal position to a pendent po- The structure shown in Figures 1 to 8, inclusition, and according to the present invention l5 sive, is designed more particularly for use on shiplocking devices are provided whereby the arm can board where it is necessary to eCOIlOmiZe in Space be locked `so as to swing in the vhorizontal plane and to have lighting equipment mounted so that only, or so as t0 swing only in the vertical plane. it will not shift during movement of the ship.

The invention also contemplates that the light A bulkhead or other suitable support S ndit".ontrolling elements carried on the end of the 2U cated at 28. A vertically extending guide memarm can be turned through 90 so as to be ber 2| is suitably secured to the bulkhead as, for brought from the normal horizontal position for example, by Screws indicated at 22. This guide directing light downward into a vertical posimember 2l is of generally C-shaped Cross section where they occupy less space. tion and may be made out of stamped 0I` GX- In a modified form 0f Construction the Bgm zo truded metal. It has inwardly exten-ding flanges controlling elements are carried in such a way 23 and 24 Wl'lCh are spaced t0 fOTm a laterally as to be removable from the supports so as to be Opening slot 25. held in the hand. A slider 26 is received in the guideway. This Other and further objects will appear as the slider has laterally extending edges Which extend description proceeds. i0 into the side guides provided by the flanges 23 The accompanying drawings show, for purand 24 as more clearly Shown in Figure 5- O11 poses of illustrating the present invention, two the front Side of the slider are spring mernof the many embodiments in which the nvenbers 2S and 30 which extend in behind the anges tion may take form, it being understood that the 23 and 24 and bear en them te provide friction drawings are illustrative of the invention rather Which TGSSS movement 0f the SlClllF.V These .lWO than limiting the same. springs may be made of a single piece 0f ma- In these drawings: terial, if desired. The flanges 23 and 24 0f the Figure l is a side elevational View of a lighting Vertical guide member are notched 91S indicated fixture, the dot and dot-and-dash line positions at 3| and 32 S0 that ends 33 an@ 34 0f the Springs indicating certain of the movements possible; J may enter them and lock. the Suder against move Figure 2 is a top plan View of the lighting EX" mlnl'eullcirdnlalscgrddtwlrdly extending ele Pure (t and gt1"anddash ltme psltmns mdlcm" ment 35 which passes through slot 25 and carries mgf) er @Si e, movemen, s L, a pivot pin 36 placed substantially in the plane F1gure 1s a .side elevational .View illustrating 5 of the flanges 23 and 2a. This pin pvotauy sup the parts n.3 Stm dlerent 1395113011 ports a, bell-crank shaped member 3l. The up- Figure 4 ls a vertical sect1onal View taken per arm 3g of this member has tw@ laterally eX- the line 4--4 0f Figure 2; tending ilanges 39 which are adapted to pass down Figure 5 is a horizontal sectional View behind the flanges 23 and 24 when the bell-crank 0n the line 5--5 0f Figure 4; "00 is in the position shown in Figures l, 2, 4, 5 and Figure 6 is a vertical sectional View taken on the line 6 6 of Figure 4;

Figure 7 is a sectional view taken on the line 4--4 of Figure 2 with the parts swung into an intermediate position;

6, and when the bell-crank is in this position the slider can be moved up and down in the guide as indicated by the dotted line position of Figure l and the dot-and-dash line position of Figure 4. When in the position shown in full lines in Figure 4, it is locked against sliding by the end 34 of the spring entering the notch 32. The lower arm of the bell-crank member has laterally extending flange elements 4I and 42 which, when the slider is moved to the position indicated in dot-and-dash lines in Figure 7, can be passed through the notches 32 and extend behind the flanges 23 and 24, and when the bell-crank member is brought to this position, the slider can be moved up and. down. It can be locked against downward movement when in the position shown in dot-and-dash lines of Figure 7 by the upper end 33 of the spring 29 entering the notch 3l, as shown in Figure 8.

'Ihe slider is held against accidental removal by screws such as 43 placed at the top and bottom of the guide, and the ends of the bell-crank are suitably notched as indicated at 44 and 45, so that these parts will clear the screw heads.

The upper part 38 of the bell-crank member carries a forwardly extending bearing plate 43, and a lamp supporting arm 41 is pivotally secured in place by a bolt 48 with suitable friction washer 49. The arm 41 is tubular and receives another tubular element 50 which is prof vided with a spring 5| which supports a button 52 and extends through a 90 slot 53 in the outer tube. The spring 5| carries a pin 54 adapted to pass through one or the other of two holes 55, 55 in the outer tube 41. through an eyelet 56 in the arm 41 and is connected to a switch 51 and lamp socket 51 to light a lamp 58. The lamp is received between upper and lower reflectors 59 and 60. The latter-mentioned parts form the subject matter of a separate application.

The device shown in Figures 1 to 8, inclusive, is particularly designed as a bunk light on shipboard, the guideway 2| being fastened to a bulkhead. With this construction it is possible for one to adjust the bell-crank member so that the lamp supporting arm 41 extends out horizontally and to lock it at a desired elevation, or to slide it down to some lower elevation. When the arm is in the horizontal position the luminair can be swung around the vertical axis, as indicated in Figure 2, and if it is desired to stow the luminair flat against the bulkhead at the higher elevation the head can be swung through 90 relative to the arm axis and then the arm swung back to bring the parts to the dot-and-dash line position of Figure 1. If, on the other, it is desired to swing the arm down close to the bulkhead and have it hang downwardly, the parts can be brought to the positions shown in Figures 3, '7 and 8, and .1

locked against sliding movement.

The arrangement shown in Figures 9 to 13, inclusive, is designed more particularly for a hospital bed light, and utilizes certain of the features of Figures l to 8, inclusive. It has a vertically extending guide member 6l similar to the guide member 2l. This guide member accommodates a slider 62 similar to the slider 2B and the slider is frictionally held in place by springs indicated at 63 and 64. The slider has an outwardly extending element 55 which supports a tubular arm 6B for swinging about a horizontal axis 51. This arm is preferably made of square tubing, as indicated in Figure l2, and slidably receives a square rod or tube 68. The rod or tube 68 carries the head or luminair similar to that above described. The rod 68 is slidable in the tube 53 and may be locked in any selected place therein by a spring pressed button 69 adapted to pass through a hole 10 in the tube wall. In this case the wiring is ex- The wiring may pass teriorly carried, as indicated at 1l, and, one can remove the rod 58 from the tube and carry the luminair as a hand lamp. It makes a very satisfactory inspection lamp for the doctor to use at the bedside. The arm can be swung about in a horizontal plane and be raised and lowered to suit the convenience of the patient and staff.

It is obvious that the invention may be embodied in many forms and constructions within the scope of the claims and I wish it to be understood that the particular forms shown are but a few of the many forms. Various modifications and changes being possible, I do not otherwise limit myself in any way with respect thereto.

What is claimed is:

1. In combination, a vertically extending member of C-shaped cross section providing two guideways on the opposite sides of a laterally opening slot, a slider having sides received in the guideways and an element extending outwardly through said slot and adapted to carry a lamp, means for supporting the slider in adjusted position comprising a leaf spring carried by the slider and bearing frictionally against the vertically extending member, the vertically extending member being notched to receive an end of the spring means and lock the slider in a predetermined position, the spring being depressible to release the slider, and a luminair secured to said slider carried element.

2. A lighting fixture comprising a vertically extending member of C-shaped cross section providing two guideways on the opposite sides of a laterally opening slot, a slider having sides received in the guideways and an element extending outwardly through said slot, spring means carried by the slider and bearing against the vertically extending member to frictonally engage the same and support the slider in adjusted position, ahorizontally extending pivot carried by the outwardly extending element, a vertically swingable bell-crank carried on the pivot, cooperable elements carried by the ends of the bellcrank and by the vertically extending member to lock the bell-crank in either of two positions apart, a pivot carried by the bell-crank shaped member in a position to swing in a vertical plane, an arm carried by the last-mentioned pivot, and a lamp carrying arm swingable in a horizontal plane when the bell-crank is in one position and in a vertical plane when the bellcrank is in the other position.

3. A lighting xture such as claimed in claim 2, wherein the lamp is connected to the end of the arm to be turned through an angle of 90 relative to the arm axis.

4. A lighting xture such as claimed in claim 2, wherein the bell-crank is releasable for swinging when the slider is in predetermined position, and is locked against such movement when the slider is shifted from such a position.

5. A lighting fixture comprising a vertically extending notched guide, a slider therein having friction means for holding the slider and supported parts at a selected elevation, a bellcrank pivoted to the slider and having projections at the ends, each projection being passable through a notch when the slider is at the corresponding elevation and having an element engageable with the guide when the slider is moved away from said elevation and acting to lock the bell crank in the corresponding pcsiion, an arm pivoted to the bell-crank to be swung through a horizontal plane when the bell-crank is in one position and in a vertical plane when it is in the other position, and a lamp socket carried by the arm.

6. A lighting iixture as claimed in claim 5, wherein the friction means includes leaf springs carried by the slider and bearing on the guide.

7. A lighting xture comprising a vertically extending member having inwardly facing anges forming two guideways, a slider carried therein and extending out between the ianges, a bell-crank member pivoted to the slider and having at one end laterally extending fingers adapted to be swung over the ends of the flanges and to slide down .behind them to prevent swinging of the bell-crank about its pivot, the flanges being notched and the other end of the bellcrank having laterally extending ngers adapted, when the slider is moved to release the rstnamed fingers from the anges, to pass through the notches to pass behind the flanges so that the slider may be moved vertically to cause the second-mentioned iingers to lock the bell-crank against swinging about the pivot, and a lamp carrying arm carried by the bell-crank.

8. A lighting x'ture as claimed in claim 7, having a slider carried spring whose end is adapted to enter the slot when the iirst set of fingers are behind the flanges to hold the slider against movement.

9. A lighting fixture comprising a vertically extending guide having vertically spaced notches, a slider therein having friction means for holding the slider and supported parts at a selected elevation, a bell-crank pivoted to the slider to swing about a horizontal axis and having projections at the ends, the projection on the upper end being passable through the upper notch when the slider is at one elevation, the projection on the lower end being passable through the lower notch when the slider is at another elevation, the projections having elements engageable with the guide when the slider is moved vertically from said elevation and acting to lock the bell-crank in the corresponding angular position, two slider carried releasable locking devices, one cooperable with the upper notch when the lower element is displaced from the lower notch, the other c0- operable with the lower notch when the upper element is displaced from the upper notch whereby the bell-crank can be simultaneously locked against vertical movement while in said respective displaced positions, and an arm pivoted to the bell-crank to be swung through a horizontal plane when the bell crank is in one position and in a vertical plane when it is in the other position.

LEROY C. DOANE.

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