US1484868A - William h - Google Patents

Description

Feb. 26 1924. 1,484,868

w. H. BRADY LIGHTING DEVICE FOR SEWING MACHINES Filed Jan. 25. 1922 1 MWW ATTORNEY Patented Feb. 26, 1924."

UNITED STATES 1,484,868 PATENT OFFICE.

WILLIAM H. BRADY, OF RdSELLE'NEW JERSEY, ASSIGNOR TO DIEHL MANUFACTUR- ING COMPANY, OF ELIZABETH, NEW J EBSEY, A CORPORATION OF NEW JERSEY.

LIGHTING DEVICE FOR- SEWING MACHINES.

Application filed January 23, 1922'. Serial No. 531,027,

To all whom it may concern:

Be it known that I, WILLIAM H. BRADY, a citizen of the United States, residing at Roselle, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Lighting Devices for Sewing Machines, of which the following is a specification, reference being had therein to the accompanying drawings,

Electric lighting devices for sewing machines, particularly when applied to machines operating at high speed, are subjected to a type of vibration which has a tendency to shorten the life of the lamp-filaments. The vibration of the machine frame is of small amplitude but is sometimes of a severe, sharp, or jarring character, in the nature of a rapid succession of hammer blows. While, by mounting the lighting device adjacent the bend of the sewing machine gooseneck, the destructive'eflect of this vibration on the lamp-filament is sufiiciently reduced to permit the attainment of a satis-' factory life by lamp-bulbs having filaments of the more rug ed types, such as carbon or the Inetallized filaments, it is an object of the present invention to further reduce the vibration transmitted to the lamp-filament, or soften its character, in order that a satisfactory life may be attained by lamps having filaments of the more delicate types, such as tungsten filaments.

Another object of the invention is to re duce the vibration of the lamp-filament in a sewing machine lighting device retaining the advantages of the constructions disclosed in the copending applications of Frederick Diehl, No. 449,968, filed March 5, 1921, and

To the attainment of the ends in View, a cushioning device is interposed between the horizontally disposed lamp-socket, which carries thelamp-bulb and reflector, andthe sewing machine gooseneck. The cushioning device should be of compact or condensed form so that the lamp-socket may be sustained closely adjacent the point of connection of the device to the goosen'eclc In the embodiment of the invention illustrated, the cushioning device is inthe form of a yielding bushing of felt or the like interposed be tween an inner horizontal sleeve, rigid with the horizontal lamp-socket, and an outer sleeve rigid with a supporting element adapted for connection with the sewing machine frame adjacent the bend of the gooseneck. The cushioning connection being of compact form permits the lamp to be located close to said supportinge'leinent and between the standard or vertical member of the gooseneck and the needle-bar. head at the free end of the latter, whereby the light may fall obliquely upon the work from a position closely in rearof the middle portion of the overhangingarm, as provided for in said Diehlcopending applications. The supporting element maybe in the form of a cover-plate adapted to close the usual opening at the rear of a sewing 'machine gooseneck and having a lateral: projection apertured, preferably horizontally, to admit the cushioning sleeve and inner sleeve. The conductor cord may passed through the apertured supporting element and through the cushioningelement to the lampsocket.

. In the accompanying drawings Fig 1 is a perspective view of the lightingcdevice as applied to aportable sewing machine. 2 1s a'horizontal longltudlnal section through the'cushioning connection, 3 is a fragmentary side elevation, of such connection and Fig. 1 is aplan view of the same,

In the accompanyingdrawings, a sewing machine head. of usual construction is illustrated in Fig. 1 as mountedupon a portable base 1; The sewing machine framecomprises a fiat-bed 2 from which rises the ho].- low gooseneck or bracket-arm including the standard 3 and horizontal member or overhanging arm 3. terminating inthe head 1 in which are slidably mounted the usual presser-bar 5 and reciprocating needle-bar 6 carrying, respectively, the resser-foot 7 and needle 8 8, Cooperating with thepress-er-foot 7 to fed'the work is theusual feed-dog 9'. The needle 8 cooperates with the usual looptaker below the bed 2 to form stitches. Machines of this type are usually driven 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 gooseneck or bracket-arm 3, 3 of a sewing machine of the type referred to, is usually provided with an opening 10 afi'ording access to the working parts mounted within the arm. This opening is customarily located at the rearward side of the gooseneck, substantially at the bend of the latter.

The present lighting device, in the specific form chosen for the purposes of this disclosure, comprises a support in the form of a cover-plate 11 shaped to close the opening 10 and formed with an upper screw-hole to admit the usual cover-plate thumb-screw 12. The cover-plate is formed with a lateral projection preferably in the form of an integral ear 13 bent rearwardly so as to stand in a vertical plane transverse to the plane of the plate 11 proper. The ear 13 is apertured at 14 to admit the reduced end 01 an outer sleeve 15; said end being spun over at 15 to firmly connect the sleeve 15 to said ear. The other end of the sleeve 15 is cut away to form the diametrically opposed tongues 16.

Passing through the outer sleeve 15 is the inner sleeve 17 formed at one end with a cylindrical head 18 and shoulder 19; said head being formed with the diametrically opposed flats 20. The other end or" the sleeve 17 is threaded to screw into the usual lampsocket 21. The space between the sleeves 15 and 17 is filled by the cushioning sleeve or bushing 22 of any usual soft, yielding or cushioning material, such as felt. Interposed between the socket 21 and ear 13 is the metal abutment washer 23 and one or more cushioning washers 24 of felt or the like. Also, between the shoulder 19 of the inner sleeve 17 and the adjacent end ofthe outer sleeve 15 is interposed a cushioning washer 25. This washer is bent over at 26, Fig. 3, against the flats 20 by the tongues 16; the purpose of the opposed tongues and flats being to prevent accidental turning of the lamp-socket 21 and inner sleeve 17 relative to the outer sleeve 15. The bushing 22 and washers 2 1, 25, are not tightly fitted or clamped in their respective positions and the lighting element is free to partake of a limited yielding rocking movement relative to the support 11.

The head 18 of the inner sleeve is fitted with an insulating bushing 27 through which sleeve and bushing the conductor cord 28 passes to the lamp-socket.

The cover-plate 11 may be formed with a lug 29 adapted to externally engage the rim;

of the aperture 10 and prevent sagging 0-5 the lamp and cover-plate. The lamp-socket 21 carries the horizontal lamp-bulb 30 reflector 31.

lit will be observed that by the means described the lamp is yieldingly supported a compact cushioning connection with the sewing machine gooseneck adjacent the bend of the latter and is not displaced from its horizontal position closely in rear of and alongside the horizontal arm-member of the gooseneck and between the needle-bar head and the vertical member of the gooseneck. Thus, the advantages flowing from the novel position of the lamp, disclosed in said copending applications, are retained and vibration is reduced to the vanishing point by retaining the supporting connection with the sewing machine frame adjacent the bend of the gooseneck and by introducing a cashioning or yielding connection between the lamp-socket and its support. The light from the lamp 30 will thus lall obliquely upon the work from the operators right and will illuminate that edge of the presser-foot relative to which the edge or the work is customarily guided.

The described disposition of the light avoids the casting of objectionable shadows upon the work by machine parts carried by or forming a part of the sewing mac 11118 bracket-arm. The lamp will not be subjected to the pounding vibration of the sewing machine as the cushioning device interposed between the lamp-socket 21 and the sewing machine frame will absorb or sotten the character or such vibration, thus permitting the attainment of a satisfactory life y lamps having filaments of the more delica'l'e types, such as tungsten. The compact form of the cushioning device is such that it is not necessary to space the socket a material distance from the point of support of the device on the sewing machine frame. The favorable position of the lamp in per-- manent working relation with the bracketarm and within the vertical planes defined by the side and end edges of the sewing machine bed may thus be retained and the lighting attachment will not interfere with 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 sewing head.

The lighting device may, of course, be

applied to sewing machines having frames or any of the usual terms.

Having thus set forth the nature of the invention, what 1 claim herein is-- 1. A lighting device comprising a support adapted for attachment to a sewing machine gooseneck adjacent the bend or" the latter and having an apertured portion. a sleeve entering the aperture in said portion, a lamp-socket and bulb sustained horizontally by said sleeve, and a cushioning bushing between said sleeve and said aperture portion.

2. A lighting device comprising a support adapted for attachment to the goose neck of a sewing machine, an outer sleeve member sustained by said support, an inner sleeve, a lamp-socket carried by said inner sleeve, and a bushing 0t cushioning material. between said sleeves.

3. A lighting device comprising a sup port adapted "for attachment to the gooseneck of a sewing machine, an outer sleeve member sustained by said support, an inner sleeve, a lamp socket carried by said inner sleeve, a bushing of cushioning material between said sleeves, and cushioning washers at the ends of the outer sleeve.

4. A lighting device comprising a sup port adapted for attachment to the goose- .neck of a sewing machine adjacent the bend oi the latter, an outer sleeve member su tained horizontally by said support, an inner sleeve, a lamp-socket carried horizontally by sa l inner sleeve, cushioi'iing means for ya nnngly supporting the inner sleeve within the outer sleeve, and coacting means on said sleeves for preventing rotation of the inner sleeve.

I. A. lighting device comprising a support ,pted for attachment to the goose necl: of a sewing machine, an outer sleeve meinher sustained by said support, diametrically opposed. ton ues at one end oi said sleeve nemher, an inner sleeve memtermed at one end with a head having metrically opposed flats coacting with said tongues to prevent rotation of the in out her d la ner sleeve, a lamp-socket secured to the other end of the inner sleeve, and a cushioning bushing interposed between said sleeves.

6. 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, an electric lamp-socket disposed horizontally and a cushioning connection between said coverplate and lamp-socket for supporting the latter horizontally in close proximity to said cover-plate.

7. A lighting attachment for sewing machi es comprising, a cover-plate adapted to close the usual opening at the rear of a sewing machine braeketarm, said plate being termed with a lateral ear transverse to the plane 01" the plate proper, an electric lamp-socket disposed closely adjacent said ear, and a cushioning connection between said ear and lamp-socket for supporting the latter horizontally.

8. 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, said plate being formed with a horizontally apertured projection transverse to the plane of the plate proper, an electric lamp-socket secured to said projection in close proximity to the latter and substantially in line with the aperture in said projection, cushioning means interposed between said socket and said projection, and a concluctor-cord passing to said socket through the aperture in said projection.

In testimony whereof, I have signed my name to this specification.

WILLIAM H. BRADY.

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