US2928640A - Hand-attachment supports for sewing machines - Google Patents

Description

March 15, 1960 A. J. MATUZAS HAND-ATTACHMENT SUPPORTS FOR SEWING MACHINES Filed April 16, 1956 3 Sheets-Sheet J lllllIlIlIIIIIIDZIIIIIIIIIIIIII) IN VEN TOR. Anthony J Mafuzas WITNESS BY 7/{M y GA-IJ-W A TTORNE Y March 15, 1960 2,928,640

HAND-ATTACl-MENT SUPPORTS FOR SEWING MACHINES Filed April 16, 1956 A. J. MATuzAs 3 Sheets-Sheet 2 INVENTOR. Anfhon J Mafuzas Fig.2 By

' ATTORNEY WITNESS March 15, 1960 A. J. MATUZAS 2,928,640

HAND-ATTACHMENT SUPPORTS FOR SEWING MACHINES Filed April 16, less 3 Sheets-Sheet 3 mmvroa Anthony J Mafuzas Z TTORNE Y WITNESS Unite States. atent HAND-ATTACHIVIENT SUPPORTS FOR SEWING vMACHINES Anthony J. Matuzas, Union, N.J., assignor to The Singer Manufacturing Company, Elizabeth, N..I., a corporation of New Jersey Application April 16, 1956, Serial No. 578,258

2 Claims. (Cl. 248-205) This invention relates to domestic sewing machines and more particularly to portable sewing machines that may be driven either by an electric motor or by a hand-turned crank.

Persons who travel or live in remote sections of the world find it desirable to own a portable sewing machine that can be driven either by an electric motor or by a hand crank. One of the least expensive means for providing such an arrangement is to equip a standard sewing machine with a so-called hand-attachment. In the past some sewing machines have been provided with means adapted for mounting a hand-attachment or other equipment on the machine. For example, US. Patent No. 1,455,391 shows .a sewing machine provided with an attachment seat. However, the more recently manufactured sewing machines, which are primarily intended to be driven by an electric motor, have not beenprovided with an appropriate attachment seat. Such a machine is shown in US. Patent No. 2,063,841. Therefore, the primary object of the present invention is to provide an improved means for securing a hand-attachment to a modern portable electric motor driven domestic sewing machine. i

Another object of the invention is to provide an improved bracket which permits mounting a hand-attachment on the motor-supporting bracket of a sewing machine.

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 and illustrated 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.

The present invention will be clearly understood from a study of the following description and drawings.

In the drawings:

Fig. 1 is a side elevational view of a sewing machine embodying the present invention. The sewing machine shown may be driven by a hand-attachment or by an electric motor;

Fig. 2 is an enlarged end elevational view of the sewing machine shown in Fig. 1; 1

Fig. 3 is a sectional view taken substantially along the line 3-3 of Fig. 2;

Fig. 4 is a fragmentary sectionalview taken along the line 44 of Fig. 3; and

Fig. 5 is a perspective view of a support bracket forming part of the present invention.

Referring more specifically to the drawings, the invcntion is disclosed as embodied in a sewing machine 16, similar to the machine shown in US. Patent No. 2,063,841, and having a machine frame including a base or bed 17 from which rises a bracket-arm standard 18, the upper end of the standard supporting an overhanging arm 19. Rotatably journaled in the overhanging arm is a main shaft 21, one end of which carries a hand-wheel 2,928,640 Patented Mar. 15, 1960 22. The hand-wheel 22, in a manner shown in US. Patent No. 1,934,373, may be operatively connected to or disconnected from the main shaft 21 by means of a handwheel clutch (notshown) controlled by a clutch-screw 23. When the clutch-screw 23 is tightened, in a known manner, rotation of the hand-wheel 22 drives the sewing equipped with a rectangularly shaped tongue 33 which,

in a manner shown in US. Patent No. 2,063,841, may be adjustably secured in the groove 32, as by a screw 34 which extends througha vertical slot 36 in the lug 31 and is threaded into the tongue 33. In the construction shown in the drawings (Fig. 4) an arm or leg 37 of an inverted U-shaped bracket 38, which will be fully de-' scribed hereinafter, is interposed between the motor-support lug 31 and the tongue 33.

The second means for rotating the hand-wheel 22, shown in Figs. 1 and 2, comprises a so-called hand-attachment indicated generally by numeral 41. Handattachments of the type shown have been used for many years and generally comprise a support 42 having terminal ends 43 and 44. The terminal end 44 is secured by means of screws 46 to the back of a hand-attachment body 47 which has a cover 48 held in place by screws 49. The body 47 and cover 48 rotatably house a gear 51 and a pinion 52. The gear 51 is driven by a crank lever 53 equipped with a handle 54. The crank lever 53 is pivotally held to the gear 51 by means of a post 56and pivot pin 57. The crank lever 53 may selectively be held to a post 58 carried by the gear 51 by means of a latch pin 59. The gear 51 drives the pinion 52 and the pinion 52 rotates a driver 61, the free end of which carries a pin 62 which pivotally mounts a driver finger 63. When the driver finger 63 is in the position shown by solid lines in Fig. 1, a driving pad 64 enters one of two recesses 66 in the hand-wheel 22, thus driving the handwheel 22 when the handle 54 is used to turn the crank lever 53. 'When the driver finger 63 is in the position shown by dotted lines in Fig. l, the hand-attachment 41 is incapable of turning the hand-wheel 22 and the motor 24 may be used to drive the sewing machine 16.

As previously indicated, the bracket 38 (Fig. 5) has an arm 37 which is formed with a vertically extending groove 72 adapted to receive the previously mentioned tongue 33 of the motor 24. Also the arm 37 has a vertically extending tongue 73 which is apertured by a vertical slot 76 through which passes the screw 34, thereby clamping and supporting both the arm 37 of the bracket 38 and the motor 24 from the motor-support lug 31. The bracket 38 further has a reach 77 merging into a downwardly disposed head or leg 78 which is provided with a vertically extending tongue 79having a centrally located threaded hole 81. A screw 82 (Figs. 1 and 2), passing through a hole 84 in the terminal 43 of the support 42, secures the support 42 to the bracket 38 and thus supports the hand-attachment 41 from the motor support lug 31. It will be noted that the slot 76 and screw 34 pass through the arm 37 in a direction that is normal to the direction in which the hole 81 and screw 82 enter the head 78 of the bracket 38.

In order for the hand-attachment 41 to function properly, the center of the pinion 52 must coincide with the center of the hand-wheel 22 and main shaft 21 In other words, the hand-attachment must beproperly positioned both horizontally and vertically'with respect to the hand-wheel 22. This is best shown in Fig. 1 where the common center line is designated by the numeral 86. 7

Horizontal coincidence is obtained by properly dimension; ing the position" of the tongue 79 with respect to the groove 72. Proper vertical coincidence is obtained by a pin 88 carried by the bracket 38 and having a lower end adapted to engage the upper surface of the motorsupport'lug 31 The properposition of the pin88 is fixed when the bracket 38 is fitted to the sewing'machinen ing machine from either driving device. The only opera:

tion required to switch from onedriving device to the other'is the operation ofthe driver finger 63. 7

Having thus described the nature of the invention, what I claimherein is: .L

1. A bracket adapted to support a hand-attachment from a lug designed to secure the'motor'of a sewing machinetii the base thereof, said bracket comprisingj a horizontal reach member; a first leg me mberdepending from one end of ,saidr e ach member, said first leg member having a groove, the longitudinal axis of whichis parallel to the longitudinal dimension of said first leg member, and said firstleg member also having an oblong aperture passing therethrough and connecting with said groove; a tongue formed on the side of said first leg member opposite from' said groove, and the said tongue and groove being parallel; a second leg member depending from the other end of said reach member, said, second leg member having an internallythreaded aperture extending into said second leg member in a direction normal-to the longitudinal dimension thereof; and a tongue formed on one side of said second leg member, said last named tongue extending in a direction parallel to the longitudinal dimension of said second leg, and said bracket being so constructed and arranged that the apertures in the first and second leg members have their axes normal to one another. a

2. A bracket adapted to support a hand-attachment from a lug designedtosecure the motor of a sewing machine to the base-thereof, said bracket comprising; a horizontal reach member; a first leg member depending from one end of said reach membensaid first leg mem' her having a tongue and groove component, the longitudinal axis of'which is parallel to the longitudinal dimension of said first leg member, and said first leg member also having an oblong aperture passing therethrough and connecting with said tongue and groove component; a second tongue and groove component formed on p the side of said first leg member opposite from said first second tongue and groove components being parallel; a second leg member depending from the other end of said reachrmember, said secondleg member having an internally threaded aperture extending into said leg member in a direction normal to the longitudinal dimension thereof; and a tongue and groove component formed on one side of said leg member, said last named tongue and groovev component extending in a direction parallel to the longitudinal dimension of said second leg, and said bracket being so constructed and arranged that the apertures in the first and second leg members have their axes normal to one another.

Rrter n s i d i h fil of i P a UNITED STATES PATENTS 1,245,744 Leibner Nov. 6, 1917 1,520,949 Hemleb .L Dec. 30, 1924 2 ,055,285" Ford Sept. 22, 1936 2,056,12 iPlumley et al. Sept. 29, 1936 2 298 5 P rkins. O t- 2,657,892 Hoernel Nov. 3,. 1953 2, 4,228 Ba n a, Ja 1,956

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