US1488233A - Lighting attachment for sewing machines - Google Patents

Description

March 25 1924. 1,488,233

DIEHL LIGHTING ATTACHMENT FOR SEWING MACHINES Filed March 5. '1921 INVENTOR ATTORNEY iri-zo JERSEY.

FREDERICK DIEHL, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY, OF ELIZABETH,

NEW JERSEY, A CORPORATION OF NEW Lren'rme ATTACHMENT roia sawine MAemuEa Application filed March 5, 1921. Serial No. 449,968.

of New Jersey, have invented certain new and useful Improvements in Lighting Attachments for Sewing Machines, of which the following is a specification, reference being had therein tothe accompanying drawin s.

his invention relates to sewing machine lighting attachments and has to provide a lighting attachment which is simple in construction and inexpensive to 15.

manufacture.

A further object of the invention is to pro Vide a lighting'attachment which may be readily mountediupon a sewing machine in such a manner and position as to effectively illuminate the work being stitched without producing objectionable reflection of the light from the work and without casting objectionable shadows-of machine parts on the work.

A further object of the invention is to provide a sewing machine lighting attachment which, when in position on the machine, will give an abundant distribution of the li ht without objectionable glare.

A urther object of the invention is to provide a lighting attachment of the class described which will not be subjected to excessive orobjectionable vibration when the sewin machine is in operation.

Stifi further, the invention has for an object to provide a lighting attachment which, when in working position on a sewing machine, will not interfere with and need not be shifted or manipulated by the operator to permit the dropping of the sewing machine head within the cavity of the usua drop-head stand, or with the placing of the cover of a ortable hand-carrying case over the sewin ead.

The ObJGOtS' of the invention are attained by mounting an electric lamp-socket carrying a lamp-bulb and reflector upon and closely adjacent a supporting element adapted for attachment to the sewing machine gooseneck, preferably adjacent the bend of the latter, so that the lamp-bulb and its reflector will be supported horizontally closely in rear of'and a ongside the horizontal arm of the gooseneck at a position between the needle-bar supporting sad and the standfor an object ard. The lamp-socket ma conveniently be supported, as indicated, by mountin it upon and in close proximity to a cover-p ate adapted to close the opening usually provided at the rear-of the bracket-arm of a sewing machine for access to the mechanism within the arm. The use of an elongated arm for extending the li ht toward the sewing point is to be avoided as such arm will permit objectionable vibration of the light at the free end thereof and will cause the needle-bar head or other parts at the free end of the gooseneck to cast objectionable shadows. By mounting the lamp socket and bulb as described, they are permanently positioned horizontally closely in rear of and alongside the horizontal arm of the sewing machine gooseneck at a position well to one side of the vertical plane through the line of feed of the machine, whereby the light will shine upon the work obliquely from the operators right, and the casting of objectionable shadows upon the work by the presser-bar, resser-foot, needlebar supporting head or other parts carried by the sewing machine gooseneck or bracketarm, is avoided. Further, by so locating the light, objectionable reflection of the light from the'work into the eyes of the operator In the accompanying drawings, 1 is a perspective view of my improved lighting attachment as mounted upon a sewing machine. Fig. 2 is a fragmentary top plan view of the same. Fig. 3 is a perspective View of the special cover-plate used as a support for the light.

In the accompanying drawings showing one embodiment of the invention, a sewing machine head of usual construction is illustrated as mounted upon a portable-base 1. The sewing machine frame comprises a flat bed 2 from which rises the hollow bracketarm or goose-neck including the standard 3 and horizontal member 3 head 4 in which are slidably mounted the usual presser-bar 5 and reciprocating needle-bar 6 carrying, respectively, the

terminating in the resser-foot 7 and needle 8. Cooperating with the presser-foot 7 to feed the work is the usual feed-dog 9. The needle 8 cooperates with the usual loop-taker below the bed 2 to form stitches. Machines of this type are usuallydriven by a suitable motor attachment which has been omitted from the illustration since it forms no part of the present invention. The sewing machine may, of course, be supported and driven in any desired manner.

The hollow bracket-arm 3, 3' of a sewing machine of the type referred to is usually provided with an opening 10 permitting access to the working parts mounted within the arm. This openin is customarily located at the rearward si e of the bracket-arm and substantially at the bend of the latter.

The present lighting attachment, in the embodiment illustrated, comprises a support in the form of a cover-plate 11 shaped to close the opening 10 and formed with an n per screw-hole 12 to receive the usual coverplate thumb-screw 13. The electriclighting socket 14 is non-adjustably secured to its support 11, in close proximity to the latter, preferably by providing the cover-plate with a projection which may be in the form of an integral car 15 bent rearwardly so as to stand in a vertical plane perpendicular to the plane of the plate 11 proper. The car 15 may be formed with an aperture 16 to admit the nipple 17 which is threaded into 'the cap 18 of the usual lighting socket 14.

The nipple 17 is preferably threaded at 19 to receive the insulating bushing 2O for the lamp cord 21.

The socket 14 receives the lamp bulb 22, preferably of the elongated tubular or cylindrical type and supports a suitable reflector 22 which need not entirely obscure the lamp-globe but may be so constructed as to permit a ready circulation of air and a gen erous distribution of the light.

It will be observed that by the means described the lamp is permanently and substantially supported in a position closely in rear of and alongside the horizontal portion 3 of the bracket-arm and well to one ,side of the needle-bar supporting head 4 and the vertical plane through the line of feed of the machine. The light from the lamp 22 will fall obliquely upon the work from the operators right and will illuminate that edge of the presser-foot relative to which the edge of the work is customarily guided. This disposition of the light avoids the casting of objectionable shadows upon the work by machine parts carried by or forming a part of the bracket-arm. Also the lamp will not be subjected to excessive vibration since it is rigidly mounted adjacent the standard 3 or vertical member of the bracket-arm, rather than at the free end of the latter, and the socket 14 is very close to the point of sup ort of the attachment on the sewing mac ine frame. Further, the device is permanently located within the vertical planes defined by the side and end edges of the bed 2 and within the external, rearwardly projected outline of the gooseneck, as viewed from the front of the ma chine, whereby such device does not interfere with and need not be shifted to permit the dropping of the head within the cavity of the usual drop-head cabinet, or with the placing of the cover of a hand-carrying case over the head.

The plate 11 is-preferabl provided with a laterally extending stopug 23 which is bent in from the edge of the cover-plate proper and is adapted to strike externally the rim of the seat for the cover-plate and prevent sagging of the lamp below its normal operative position.

The lamp is so located as to be substantially invisible to the operator of the machine; the horizontalportion of the gooseneck effectively shielding the eyes of the operator from the glare of the lamp. As before stated, this location of the lamp permits the use of a rather shallow reflector which need not so fully envelop the lamp globe as would otherwise be necessary if the reflector alone was depended upon to shield the eyes of the operator from glare. The. use of a shallow reflector is also desirable since it permits a ready circulation of air around the lamp globe and avoids overheating. Further, it permits ready removal and replacement of the lamp globe.

While it is desirable with certain types of sewing machines to use the cover-plate as a support for the light, it is to be understood that the supporting element may assume other specific forms within/the scope and without a sacrifice of the advantagesof the invention, inits broader aspects.

Having thus set forth the nature of the invention, what I claim herein is- 1. The combination with a sewing machine frame having a bed and gooseneck including a standard and overhanging horizontal arm terminating in a head, together with the usual stitch-forming and feeding mechanisms, of an electric lighting device including a lamp-bulb and lamp-socket directly mounted horizontally closely in rear of and alongside the horizontal member of the gooseneck and intermediate the standard and head of the gooseneck, said socket. being supported by a connection with said gooseneck.

2. The combination with a sewing machine frame'having a bed and gooseneck, together with the usual stitch-forming and feeding mechanisms, of a lighting device including an electric lamp-socket and lamp disposed horizontally closely in rear of and alongside the horizontal member of the gooseneck and well to the gooseneck sideof the line of feed of the machine, and

memberof the goo supporting means connecting said socket to said gooseneck adjacent the bend of the latter.

3. The combination with a sewing machine frame having a bed and gooseneck including a standard and horizontal arm terminating in a head, together with the usual stitch-forming and feeding mechanisms, of a lamp-support connected to said gooseneck adjacent the bend of the latter, and an electric, lamp-socket and lamp-bulb non-adjustably connected to said support and permanently located horizontally closely in rear of and alon side the horizontal seneci between the standard and head of the gooseneck.

4. The combination with a sewing machine frame having a bed and gooseneck, together with the usual stitch-forming and feeding mechanisms, of a lighting device including an electric lamp-socket and lamp disposed horizontally closely in rear of and alongside the horizontal member of the; gooseneck and well to the gooseneck side of the line of feed of the machine, and supporting means connecting said socket to said gooseneck adjacent the bend of the latter, said supporting means being disposed entirely within the rearwardly projected eX- ternal outline of the gooseneck as viewed from the front of the machine.

5. A lighting attachment for sewing machines comprising a cover-plate adapted-to close the usual opening at the rear of a sewing machine bracket-arm, and an electric lighting socket directly mounted on said cover-plate in close proximity to the atter, substantially as and for the purposes specified.

' 6. A lighting attachment for sewing machines comprising a cover-plate adapted to close the usual openingat the rear of a sewing machine bracket-arm, said plate be- 7 comprising,

ing formed with a lateral ear transverse to the plane of the plate proper, and an electric lighting socket secured to said ear in close proximity to the latter, whereby, when the attachment is secured over the opening in the sewing machine frame, the said socket and the lamp carried thereby will be located in rear of the horizontal portion of the sewing machine bracket-arm and well to one side of the vertical plane through the line of feed of the machine.

7. A lighting device for sewing machines a support adapted for attachment to a sewing machine gooseneck adjacent the bend of the latter and having a horizontal aperture, an electric lamp-socket and lamp-bulb substantially in line with the axis of said aperture, and means for directly connecting said lamp-socket to said support, said connecting means including an element horizontally entering said aperture.

8. A lighting attachment for sewing machines comprismg, a cover-plate adapted to close the usual opening at the rear of a. sewing machine gooseneck, said plat-e being formed with a horizontally apertured projection transverse to the plane of the plate proper, an electric lamp-socket secured tosaid pro ection in close proximity to the latter, and securing means horizontally entering the aperture in said projection.

9. A lighting chines comprising, a sheet-metal cover-plate adapted to close the usual opening at the rear of the sewing machine bracket-arm, a stop-lug bent forwardly from the plane of the cover-plate proper at the edge of the latter, an ear bent rearwardly from the plane of said plate at the ed e of the latter, and an electric lighting soc et fixedly mounted upon and in close proximity to said ear.

In testimony whereof, I have signed my.

name to this specification;

FREDERICK DIEHL.

attachment for sewing ma-

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