US1733870A

US1733870A - Auxiliary presser-foot attachment for sewing machines

Info

Publication number: US1733870A
Application number: US199367A
Authority: US
Inventors: Joseph A Firsching
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-06-16
Filing date: 1927-06-16
Publication date: 1929-10-29
Anticipated expiration: 1946-10-29

Description

0.129, 1929.'. MsmscHlNG' 1,733,870

AUXILIARY PESSER FOOT ATTACHMENT FOR SEWING MACHINES Filed June 16, 1927 w, mwwl Patented Get. 29, 1929 narran stares :rosnrn A. rinscHING,

wasn" l earen'r F Urrea, new Yonail l Application filed .Tune 16,

My invention relates to an auxiliary presser foot attachment for sewing machines and l declare the following to be a full, clear, concise and exact description thereof sucient to enable anyone Vskilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings in which like reference-characters refer to like parts throughoutthe specifications.

lThe object of thel invention is to provide a sewing.V machine that is adapted to ruffle a narrow strip of fabric and at the same time sew it to another piece of fabric, which forms the body of the garment, and is run through the machine perfectly flat without any rutile therein. To this end an auxiliary presser footand separator plate is attached to the well known two feed sewing machine.

p The fabric that is to be sewed without the go'ruiile therein is fed to the sewing machine over the separator plate, whereby it will not come in contact with the front feed mechanism of the machine and the edging strip is fed under the separator plate, whereby it will 'be act-ed upon by both feedsof the sewing machine with the resultant rutile therein.

The invention may be found useful not only for the purpose of rufiing cloth but also it can be used in ruiing laces, ribbons, or any sort of fabric. Furthermore, it can be adjusted whereby to ruffle or merely full in the fabric. Several of the attachments can be fixed on one machine having a plurality of sets of feeds, whereby a plurality of edging strips can be sewed simultaneously to a piece of fabric.

The object will be understood by referring to the drawings in which Fig. 1 is an elevational view showing the auxiliary presser foot and plate attachment applied to a differential feed sewing machine. Fig. 2 is al detail perspective view of the attachment.

F ig. 3 is a plan view of a piece of fabric 4i with the edging strip sewed thereto by means of the invention.

Fig. t is a detail perspective view of a bracket with shaft attached thereto employed.

Referring more particularly to the drawings, the parts of the sewing machine that are 192'?. serial No. 199,367.

old and well known in the `art embody a cloth plate' 1 disposed beneath the overhanging.;` head member 2 carrying the vertically movable presser foot bar 3 to which isfclamped at 4 the presser foot 5.` Beneathpress'er4 foot isk the rear feed dog 6 that is adapted to reciprocate in two horizontal planes, an elevated" plane as it moves forward, whereby to feed edging strip 10 towards the sewing machanism and a lower plane as it returns, whereby to 'clear

edging strip

1,0 for the purposeof securing a new 'hold thereon to feed it forward. There is also front feed dog 11, which reeiprocates with a longeristroke than feed dog 6 although similar'inall otherV respects.v Becausey of. this differential; action in the length of strokeof feed dogs 6 and 11, edging "f strip 10 will be ruffled ory fulled. y A There is also theusual needle 15 carried needle bar 16 which is reciprocated in avertical plane. An aperture 17 is made in member 18 of presser foot 5, for the projection of needlel. lThe parts that are 'new embody an auxiliary presser foot 20, which serves also as a separator plate that is formed with a depending part 21 at right angles to the horizontalpart 22. The end 23 ofuhorizontal part 22 is rounded off and is disposed just above frontfeerd'rdog .11. A bearing or enlarged portion 24: is made integral with presser foot 2O and disposed at the apex and on the-inner side of the angle between

'parts

21 and 22. An aperture 25`is madelin bearingV portion 24 for the projection of headed shaft l 26. Ends of shaft 26 extend beyond the end, surfaces of bearing portion 24. One of said ends is riveted in upstanding plate 27 made integral with bracket 30 that 4is'screw bolted, to cloth plate 1 at 31, 31. On the-other end of shaft 26 is a collar 28 held in place by set bolt 29, whereby to aid in retaining shaft 26 in place. Shaft 26 has a loose fit in aperture 25 of bearing 24, wherebyfplate 20 will be permitted to rock thereon. y s

The presser part of plate'20 is'formed at 35 by bending horizontal part 22-down at: an angle at 36. Presser part 35 is disposed'in a horizontal plane and is vadapted t0 cooperate with front feed dog 11 in order to carry the edging strip 10 past the sewing mechanism.

The means for holding presser part 35 yieldingly against edging strip `as it is free end and the adjacent end of stud 4l for.

plate 20 to rock.

Adjustable lock nuts

45, 45

Vare mounted on threaded-shaft 42, whereby to control the tension of spring 40.

It' will be observed that the plate 18V of presser foot 5 is modified from the original,

and Vis equippedy with a novel upwardly incl'inedl part at 5l, whereby to provide a space Vat 53 therebelow for the disposition of auxiliary presser foot 20, as well as the manual feed-ing 'of 'fabric 55 to which strip l0 is to be sewed. f

An adjustablejplate is pivoted at 6l to cloth'plate' l of the sewing machine. Platev 60 can "belrock'ed on itsl pivot whereby edge 62 thereofcan vaid in determining the angleV at which ledging strip, 10 will be'fed to the sewing mechanism. f l

The operation'ofithe device is effected by feeding manually ,fabric 555 yto the `sewing mechanisminto Lthe space 53 between the lower -surface'of the inclined part 51 of rear presserfoot 5jand the upper surface of auX- iliary presser foot 20. Edging strip 10 will be fied manually also to the sewing mechanism up over'ed'geV 62 of plate 60 and onto plate and lunder auxiliary presser foot 20.

When the sewingmachme 1s 1n motion, rear Y feed dog 6 will by its reciprocatorymotion draw fabric 55 under the sewing mechanism vwithout rulling, gathering or fulling it. Said fabric 55 in thisinstance is subj ect only y to the action of feed dog 6 because of the intervention of'auxiliary presser' foot 20 which separates said fabric v55 fromthe action Vof feed dog 11. Edging strip 10 on the other hand will be pressed into contact with front feed dog 11 by the yielding end of auxiliary presser foot 20, and into contact with rear feed dog 6 by presser foot 5 whereby it ywillbe-'subject tothe differential actions of feed dogsill and 6 and hence be ruffled, gathered or fulled as shown'inf Fig. 3, As said fabric Q55 and edging strip 10 pass under needle l5-they will `be sewed together result- .ing in the product illustrated in Fig. 3.

Having thus described my invention what I claim as new and -desire to secure by Let-f ters Patent is as follows: u Y l l. `In an auxiliary presser footattachment for sewing machines having-a differential feed, a presser foot for cooperating with one of Ysaid feeds, a rock member having parts disposed atright angles to each other for cooperating with the other of-said feeds, one

of said parts being bent to form a lower surface for cooperating with the second mentioned of said feeds, whereby a ruffled edging strip can be sewed to a piece of fabric without rufliing said piece of fabric, a bearing formed at the angle of said parts of the rock member, a stud attached to said rockmember, a shaft yattached to said sewing machine, va coil spring surrounding said stud and shaft Aand means mounted on said shaft,vwhereby to adjust the tension of said rock member.

2. In an auxiliary presser foot attachment for lsewing machines having a Idifferential feed, apresser foot for cooperating with one of said feeds, a'rock member havingparts disposed at right angles to each other for co-` operating with the other of said feeds, one of said 'parts being bent to form a lower surface for cooperating with the second mentioned of said feeds, whereby -a ru'illed edging strip 'can be sewed to a piece of fabric'without ruflli'ng said piece of fabric, a bearing formedr at the angle of said .parts'of the rockl member, a stud attached to said rock member, a shaft `attached tov said sewing machine, va

Vcoil 'spring surrounding said stud and shaft and lock nuts `mounted on .saidshaft, whereby -to adjust the tension of said `rock member. In testimony whereof I 'affix my signature.

JOSEPH -A. FIRSCHING.