US2277972A - Lighting device - Google Patents

Description

H. I -IAKLANDER .LIGHTING DEVICE originaIFiId sept. 2, 1939 2 Sheets- Sheeyxl Li IL" lJe fea umh 31,.194z.x HAKLA'Nm-:R v 2,271,972-

- LIGHTING DEVICE' original Filed spt.: 2, 195s 2 sheets-sheet '2' Patented Mar. 31, 1942 LIGHTING DEVICE Hans Hacklander, Linden, N. J., assignor to The Singer Manufacturing Company,

Elizabeth,

N. J., a corporation of New Jersey Original application September 2, 1939, Seriall No.

293,155. Divided and this application December 6, 1939, Serial No. 307,725

9 Claims. (Cl. 112--218) This invention relates to a lighting device and more particularly to a lighting device for use with so-called cup-feed sewing machines.

In a sewing machine of the cup-feed type wherein the stitch-forming feed-cups and usually a fabric uncurling guide are necessarily crowded into a relatively small space, it is decidedly advantageous to have a suiicient amount of light directed to the vicinity of the stitching pointso that the operator may v observe the character of the stitching and the position of the work as it passes through the machine, and also so that the various stitching implements, such as the needle and looper, may be more conveniently threaded.

It is the primary object of the present invention to provide in a vcup-feed sewing machine of the hosiery seaming type a lighting device so disposed that it will not encroach upon the area adjacent the stitching point required for workhandling, and at the same time will direct a suicient amount of light to the vicinity of the stitching point to assist the operator in producing work of a high quality.

Another object of the invention is the provi- .1,

sion in a cup-feed sewing machine of a built-in lighting device, as distinguished from an attachment adapted to be fastened externally of the machine-frame.

With the above and other objects in view, as Will hereinafter appear, the invention comprises the devices, combinations, and arrangements of parts hereinafter set forth andillustrated in the accompanying drawings of `a preferred embodiment of the invention, from which the several features of the invention and the advantages attained thereby will be readily understood by those skilled in the art.

In the accompanying drawings, Fig. 1 is aright side elevation of a sewing machine embodying the invention with portions of the bottom coverplate and the standard-wall of the frame broken away to show the way in which the tubular conduit for the electrical conductor is secured in the bottom cover-plate.

instrumentalities,

having a frame including a standard I terminating at its upper end in a laterally projecting overhanging bracket 2. As more fully described in my copending application Serial No. 293,155, filed September 2, 1939, of which this application is a division, the standard I at its upper end is formed with a horizontal partition 3 which divides the machine-frame into a splash-lubrication Acompartment 4 and a belt-compartment 5. The splash-lubrication compartment 4 is closed at the bottom by means of a plate 6 secured by screws 'I and sealed by a gasket 8.

Externally of the machine-frame and beneath the overhanging bracket 2 are the stitch-forming devices including a needle 9, a looper I0 and a second looper or spreader II which cooperate in timed relation to produce overedge stitches in fabric sections supported and advanced past the stitching point by the driven feed-cups I2 and I3. The needle 9 is carried in the exposed end of an endwise reciprocatory needle-bar 9' journaled horizontally in the machine-frame. The looper Il! and the spreader II are xed in the free ends of the horizontal divergent rock-shafts I0' and I I', respectively, which, as shown in Fig. 2, penetrate the machine-frame at points on opposite sides of the vertical plane containing the axis of the needle-bar 9'. The mechanisms within the frame employed for operating the needlebar 9', the looper rock-shaft I0 and the spreader rock-shaft II are fully disclosed in my copending application Serial No. 293,155 above referred to. The arrangement of the looper and spreader rock-shafts or supporting members on opposite f sides of the Vertical plane containing the axis of the needle-bar is advantageous in that there is provided a space directly above the needle-bar which is free of mechanism and into which may beput a lighting deviceadapted to illuminate a substantial area at the stitching point without casting any objectionable shadows on the work, or shining into the eyes of the operator.

Fig. 2 is a front elevation of the upper portion It will be observed in Fig. 1 that the bottom plate 6 of the standard I is formed with a boss I4 apertured to receive a tubular conduit I5 of such external diameter as to be a press-fit in the boss I4. The tubular conduit I5 at its upper end extends into the belt-compartment 5 through a clearance aperture I6 'formed in the horizontal partition 3. Passing through the tubular conduit I5 is a regular insulated electrical conductor I'I, the tubular conduit I5 acting as a protecting sheath or guard for the conductor I1 and preventing its contact with the oil in the splash-lubrication compartment 4. The

insulated covering for the electrical conductor I'I is preferably composed of an oil-repellent material, such as neoprene, so that al1 likelihood of the electrical conductor being deleteriously affected by the oil-laden mist within the machine-frame will be eliminated. The upper end of the electrical conductor I'I is connected to a conventional lamp-socket I8 which is secured, preferably by means of a clamp or strap I9 held in place by a screw 20, on a suitable pad 20' interposed between the lamp-socket I8 and an inclined concave seat 2| formed in a cavity 22 provided in the wall of the machine-frame substantially at the junction of the standardl and the overhanging bracket 2. Detachably secured in the socket I8 is a low-voltage incandescent lamp 23, the free end `of which is disposed outside of the wall of the machine-frame and beneath the overhanging bracket 2. To prevent or minimize glare from the lamp the upper portion thereof can be suitably painted or otherwise shaded.

As clearly shown in Fig. 1, the lower portion of the boss I4 on the bottom plate 6 is countersunk, as at 24, and threaded to receive the conventicnal clamp 25 for the flexible BX covering 26 which protects the insulated conductor I'I.

It will be evident from the drawings that the incandescent lamp is located above all the stitchforming devices and adjacent the wall of the machine-frame so that it will not encroach upon the area adjacent the stitching-point required for work-handling. The design of the lighting device is extremely simple and lends itself to convenient installation in a machine of the type illustrated,

While I have illustrated and described a preferred embodiment of the invention, it will be understood that the form, construction and arrangement of the elements employed may be varied, and the privilege is reserved of resorting to all such legitimate changes therein as may be fairly embodied within the spirit and scope of the appended claims.

Having thus set forth the nature of the invention, what I claim herein is:

1. In a sewing machine, a frame including a standard terminating in a laterally projecting overhanging bracket, feed-cups exteriorly of said frame and disposed beneath said overhanging bracket for supporting and feeding fabric sections, stitch-forming instrumentalities including a needle and at least one complemental element located above said feed-cups for forming stitches in said fabricsections, an endwise reciprocatory needle-bar carrying said needle, a cavity in said frame at the junction of the overhanging bracket and the standard above the level of the stitchforming instrumentalities, a lamp-socket xed in said cavity, and an incandescent lamp secured in said socket and disposed substantially vertically above said needle-bar for illuminating a substantial area in the vicinity of the stitching point.

2. In a sewing machine, a frame including a standard and a laterally projecting overhanging bracket, feed-cups exteriorly of said frame and disposed beneath said overhanging bracket for supporting and feeding fabric sections, stitchforming instrumentalities located above said feed-cups for forming stitches in said fabric sections, a cavity in said frame at the junction cf the overhanging bracket and the standard and above the level of the stitch-forming instrumentalities, alamp-socket arranged within said cavity and contacting one wall thereof, a clamp bearing upon said lamp-socket for maintaining the latter in fixed position, and an incandescent lamp secured in said socket for illuminating a substantial area in the vicinity of the stitching point.

3. In a sewing machine, a frame having a splash-lubrication compartment formed therein,

a conduit Within said frame and extending through said splash-lubrication compartment, an electrical conductor within said conduit and sealed thereby from contact with oil in said splash-lubrication compartment, a lamp-socket connected to said electrical conductor and secured to said frame, and an incandescent lamp mounted in said socket and projecting externally of said frame for directing a light beam to a point exteriorly of said frame.

4. In a sewing machine, a frame including a standard and an overhanging bracket, a splash-L- lubrication compartment in said standard, a compartment in said overhanging bracket separated from said lubrication compartment, a plate adapted to close said splash-lubrication compartment, a conduit secured to said plate and extending through saidsplash-lubrication compartment and into the compartment in said bracket, a lamp-socket within said overhanging bracket, an electrical conductor passing through said conduit and connected to said lamp-socket, and an incandescent lamp mounted in said socket and projecting externally of the frame `for illuminating a substantial area exteriorly of the frame.

5. In a sewing machine, a frame including a standard and a laterally projecting overhanging bracket, feed-cups exteriorly of said frame and disposed beneath said overhanging bracket for supporting and feeding fabric sections, stitchforming instrumentalities above said feed-cups including a needle and a plurality of complemental thread-handling implements, an endwise reciprocatory needle-bar journaled horizontally in said frame, supporting members for said thread-handling implements each disposed to one side of the vertical plane containing the axis of said needle-bar, and an incandescent lamp secured to said frame vertically above said needlebar and substantially at the junction of the standard and overhanging bracket for illuminating a substantial area in the vicinity of the stitching point.

6. In a sewing machine, a frame including a standard and a laterally projecting overhanging bracket, feed-cups exteriorly of said frame and disposed beneath said overhanging bracket for supporting and feeding fabric sections, stitchforming instrumentalities above said feed-cups including a needle and a plurality of complemental Athread-handling implements, an endwise reciprocatory needle-bar journaled in said frame, supporting members for said thread-handling implements each disposed to one side of the vertical plane containing the axis of said needle-bar, a cavity formed in the wall of said frame vertically above the needle-bar, a lamp-socket secured in said cavity, an electrical conductor housed within said frame and connected to said lamp-socket for supplying electrical energy thereto, and an incandescent lamp in said socket and projecting externally of said frame for illuminating an area in the vicinity of the stitching point.

7. A cup-feed sewing machine, having a frame including a standard and a laterally projecting over-hanging bracket, an outer feed-cup supy ported from above by said overhanging bracket,

an inner feed-cup supported from below by said standard, stitch-forming devices including a needle and a plurality of complemental threadhandling implements, a needle-bar reciprocable in said standard, supporting members for said thread-handling implements each disposed to one side of the vertical plane containing the axis of the needle-bar, and an incandescent lamp secured to said frame vertically above said needlebar and beneath the overhanging bracket for illuminating a substantial area in the vicinity of the stitching point Without reflecting or shining the light in the eyes of the operator.

8. In a sewing machine, a frame including a standard and a laterally projecting overhanging bracket, feed-cups exteriorly of said frame and disposed beneath said overhanging bracket for supporting and feeding fabric sections, stitchforming instrumentalities above said feed-cups including a needle and at least one complemental thread-handling implement, an endwise reciprocatory needle-bar horizontally journaled in said frame, a supporting member for said complemental thread-handling implement disposed horizontally and to one side of the vertical plane containing the axis of said needle-bar, an incandescent lamp secured to said frame vertically above said needle-bar and substantially at the junction of the standard and the overhanging bracket, and an electrical conductor disposed Within the Walls of said frame and connected to said incandescent lamp for supplying energy thereto from an outside source.

9. A cup-feed sewing machine having a frame including a standard and an overhanging bracket, cooperating feed-cups, and stitch-forming devices above said feed-cups, a partition within said frame dening With the Walls of said standard a lubrication compartment and with the Walls of said overhanging bracket a compartment separated from said lubrication compartment, a plate adapted t0 close said lubrication compartment, a conduit extending through said lubrication compartment and having one end secured to said plate and the other end projectingthrough said partition into the compartment in said overhanging bracket, a lamp-socket fixed to said overhanging bracket above the stitch-forming devices, an electrical conductor passing through said conduit and sealed thereby from contact with oil in said lubrication compartment, and an incandescent lamp mounted in said socket in position to illuminate a substantial area in the vicinity of the stitching point.

HANS HACKLANDER.

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