US2096330A

US2096330A - Folder for sewing machines and the like

Info

Publication number: US2096330A
Application number: US63681A
Authority: US
Inventors: Vesconte Harold J Le
Original assignee: Union Special Machine Co
Current assignee: Union Special Machine Co
Priority date: 1936-02-13
Filing date: 1936-02-13
Publication date: 1937-10-19
Anticipated expiration: 1954-10-19

Description

Oct. 19, 1937. H. J. LE VESCONTE 2,096,330

FOLDER FOR SEWING MACHINES AND THE LIKE Filed Feb. 13, 1936 MIA-MW I N VENTOR: Harold JLaMsmnfia, B Y

A TORNEYS.

Patented Oct. 19, I937 UNITED. STATES PATENT OFFEC FOLDER FOR SEWING MACHINES AND THE LIKE Harold J. Le Vesconte, Western Springs, 111., as,-

signor to Union Special Machine Company, Chicago, 111., a corporation of Illinois This invention relates to folders for sewing machines and the like; and ithas reference more particularly to folders wherein two opposing scrolls cooperate in concurrently and progressively folding the contiguous edges of two juxtaposed the sewing machines for the formation of felled seams.

In the usual forms of folders of the type S1381 cifically referred to, the scrolls are fixed and their delivery ends so proportioned for passage of cross seams through them instead of for the passage of the normal fabric thickness. As a consequence of such proportioning of the delivery ends of the scrolls, difficulty is experienced with the proper guiding and folding of the fabric edges beneath the presser feet of the sewing machines, and hence, with securing compactly and uniformly-folded'felled seams.

My invention is directed toward overcoming this drawback, which objective I attain, as hereinafter more fully disclosed, by proportioning the scrolls with their delivery ends just large enough to pass the normal fabric thickness, and by mounting them with capacity to yield outward independently and thus allow cross seams or other, fabric thickness irregularities to pass through them.

Other objects and attendant advantages of my invention will appear from the following description of the attached drawing, wherein Fig. I is a plan view of a folder for sewing machines and the like conveniently embodying the present improvements.

Fig. II is a view similar to Fig. I with a por- I tion of one of the scrolls broken away for exposure of underlying parts which would otherwise be hidden. 7

Fig. III is a cross sectional view through the folder taken as indicated by the arrows III-III in Fig. I.

Fig. IV is a View of the folder partly in side elevation and partly in section taken as indii cated by the arrows IV-IV in Fig. I.

" fashioned from sheet metal with tapering

portions

3 and 4 jointly defining uni-directional attenuating

channels

5 and 6. In passing through V the

channels

5 and 6 as shown in Fig. III, the

a felled seam in a well known way.

contiguous edges of two juxtapositioned fabric sections F, F which are to be united, are progressively folded into interlapping relation incident to being guided to the stitching instrumentalities of a sewing machine for the formation of In, accordance with my invention, the folder is so proportioned that the delivery ends of the

channels

5 and 6 are just large enough for passage of the normal thickness of the fabric sections F, F through them. Accordingly, the fabric edges are interlapped snugly and tightly and thus delivered from the folder devoid of distortion or unevenness, with pro-assurance of formation of a perfect seam by the sewing machine.

In addition to the scrolls I and 2, the folder comprises a plate I which is adjustably secured, by a pair of screws 8, to a base or supporting piece 9 adapted to fit over a suitable projection on the work plate of the sewing machine. From Figs. I, II, IV and V it will be observed that the scroll I is provided at its receiving end with a laterallyprojecting apertured ear III which engages a headed fulcrum stud II threaded into the plate 'I. The scroll 2 on the other hand, is welded or otherwise permanently secured to an arched bracket piece I2, see Fig. IV, which, at the receiving end of said scroll, has a pierced ear I3 in engagement with a headed fulcrum screw M threaded into the plate 1 adjacent the screw stud I1. Also threaded into the plate I is an anchorage screw stud I5 for a coiled spring I6 whereof the ends are extended as shown at I? and I8 in Figs. II and IV. Also as shown in Figs. II and IV, the spring ends I! and I8 engage eyes I9 and 20 respectively on the scroll I and on the bracket piece I2 adjacent the delivery ends of said scrolls, the outward swing of the spring arms being limited respectively by stops 2| and 22 on the plate I with said scrolls held in the normally closed relation shown in Figs. I-III.

By virtue of the described construction, it will be evident that the scrolls I and 2 are free to swing independently outward on their pivots II and I4 as shown in Figs. V and VI in opposition to the spring I6, in compensating for the passage of cross seams or other thickness irregularities of the fabric sections F, F through them. Immediately upon passage of such fabric thickness irregularities, the scrolls I and 2 are urged toward each other by the spring I 6 and resume the normal positions shown in Figs. IIII. Under these circumstances, perfect control is had over the fabric sections F, F regardless of thickness variations in them,with resultant pre-assurance of the delivery at all times of a tightlyinterlapped fold and the formation of a compact and even felled seam by the stitch instrumentalities of the sewing machine.

Having thus described my invention, I claim:

1. A folder for sewing machines and the like, comprising a pair of opposing scrolls jointly providing attenuating uni-directional interlapping channels for interfolding contiguous fabric edges incident to passage of the latter through the folder; a common support on which the scrolls are mounted with capacity for independent lateral movement to compensate for cross seams and other fabric thickness variations; and yielding means for urging the scrolls toward each other.

2. A folder for sewing machines and the like, comprising a pair of opposing scrolls jointly providing attenuating uni-directional interlapping channels for interiolding contiguous fabric edges incident to passage of the latter through the folder; a common support to which the scrolls are pivoted with capacity for independent lateral movement to compensate for cross seams and other fabric thickness variations; and yielding means for urging the scrolls toward each other.

3. A folder for sewing machines and the like,

comprising a pair of opposing scrolls jointly providing attenuating uni-directional interlapping channels for interfolding contiguous edges incident to passage of the latter through the folder; a common support to which the scrolls are pivoted at their receiving ends with capacity for independent lateral movement to compensate for cross seams and other fabric thickness variations; and yielding means for urging the delivery ends of the scrolls toward each other.

4. A folder for sewing machines and the like, comprising a pair of opposing scrolls jointly providing attenuating uni-directional interlapping channels for interfolding contiguous fabric edges incident to passage of the latter through the folder: a common support to which the scrolls are pivoted at their receiving ends with capacity for independent lateral swinging movement tocompensate for cross seams and other fabric thickness variations; a coiled spring having a central loop anchored on the support and having its ends extended and engaging projections at the delivery ends of said scrolls thereby to urge said scrolls toward each other.

HAROLD J. LE VESCONTE.