US1145644A

US1145644A - Sewing-machine.

Info

Publication number: US1145644A
Application number: US41649608A
Authority: US
Inventors: Russel Green Woodward
Original assignee: Union Special Machine Co
Current assignee: Union Special Machine Co
Priority date: 1908-02-18
Filing date: 1908-02-18
Publication date: 1915-07-06
Anticipated expiration: 1932-07-06

Description

H.' G. WGODWARD.

sEwmG MACHINE.

APPLICATION FILED FEB. 18, 1908. ylzg, PaentedJuly (i, 1915.

3 SHEETS-SHEET lA llo" j vvL U R. G. WOODWARD.

SEWING MACHINE.

APPLlcATloN man ma. 19. 1908.

sHEETssHEET 2.

inventor R. GA WOODWARDQ SEWING MACHINE.

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3 SHEETSHSHEET 3,

WM www@ @XH ha coma @Hof/mm3 S I thread fingers and 11 as they pass threads 'will be so located that a from one needle to the other, will cover therefore, the upper edge of the binding strip, while the looper locking its thread in the needle loops, will cover the edge of the binding'strip beneath the material. If a single needle is used, of course, said binder line of stitching will be deposited in the binding strip adjacent the edge thereof.

As a means for feeding the binding strip, l have shown in the present embodiment of my invention a feeding mechanism comprising an upper and a lower feeding member. The lower feeding member as shown in Fig. 3, is provided with a feeding surface `b v or feeding surfaces which extend from one side of the line of feed to the other, so that said feeding member 20 feed a binding strip and a body of fabric, will operate upon both the Vbinding strip and body fabric, to carry the same away from the stitching mechanism after it has been stitched. SaidV feeding member 2O is also provided with a forwardly extending portion 21, which extends along one side of the needle and in front thereof. Said feedv moved in opposite directions ing member 2l is provided with a raised portion 22 at the forward end thereof. The feeding member 20, receives its backward and forward movement from'a feed rocker 423, which is operated in the usual manner.

The feed bar 24 carrying the `feed member 20 receives an up and down movement to bring the feed member into engagement with the fabric from an eccentric 25 on the 'd main shaft 5.

Cooperating withthe lower feed member 20, is a presser foot 26 which is preferably pivotally secured to a presser foot 26, has a laterally extending member 28 which extends preferably across the front end of the binder. Said presser foot isv provided with a forwardly extending portion 29, which coperates'with the raised portion 22 ofthe feeding member 20. A spring 29a presses the portion 29 downward. The presser foot in the present embodiment of my invention, is shown as provided with a tongue 30 over which the cross threads are led by the thread guides 10 and 11.

The upper feeding member 31 is carried by a feed bar 32 which is also pivoted to the feed rocker 23, so that the two

feeding members

20 and 31 move back and forth, together to feed the fabric. The feed bar 32 receives its rising and falling movements from an eccentric 33 on the main shaft 5. The eccentrics 25 and 33 are preferably so disposed on the main lshaft that the feeding members are brought together to clamp the and are then to release the material so 'that the feed dogs may be moved again, to their forward position. The feed material and feed the same,

when operating to presser bar 27. rlhe member 31 is preferably so disposed as to operate entirely upon the binding strip. Said feed member 31 is also provided with a lateral extension 34 which extends in rear of the stitching point. The presser foot 26 is preferably cut away so as to allow the feeding member 31 to engage the upper side of the fabric. The feeding member 31 is provided with an outwardly and downwardly extending shank portion 35 which is secured to the feed bar 32 by a suitable screw 36. The screw 37 passes through said shank 35 and engages the feed bar and serves as a means for adjusting the position of the feed member 31, relative to its feed ar. fIt will be observed that my feeding mechanism comprises two members which are operated in the same timing. Said feed members are brought together to clamp the material and then move laterally to feed the same. 'The lower feed member is also provided with a forward extension having a raised portion, which will be brought into engagement with the fabric at an earlier period-of time than the main portion of the lower feeding member. This feeding member 20 is lpreferably so timed that a slight feeding movement is given thereto as soon as the raised portion thereof engages the fabric and before the main portion of the feed engages the fabric with sufficient force to moveA the same. The result of this tim? ing of the parts, is that the fabric engaged by the forward raised extension of the feed og or feeding member will be moved forward slightly faster than the fabric is fed away from the stitching point so that said fabric will be crowded in ahead of the stitching point or slightly gathered. In placing a binding strip of elastic ,orf nonelastic material upon 'a knit fabric, it is found that the knit fabric is very apt to be stretched by the feeding action of the machine so that said fabric when attached to a ybinding strip yor another fabric, is stretched from its normal condition. Where however, the feed dog is provided with means for feeding in v"the knit fabric faster than it is carried away from the stitching point, the feeding in action may be so regulated as to compensate for the usual stretching of the knit fabric and thereby said knit fabric will be stitched smoothly and evenly to a binding strip 'or to another fabric. The feed member 20 as shown in the drawings is: secured to the feed bar 24 by a screw and 'slot connection 38.v It `will be seen therefore, that the feed member 20 may be adjusted vertiengagement with the' ist intacta that the amount of gathering in by this forward extension of the feed member may be adjusted. lt hasalso been found that when working upon a binding strip made of knit goods or other loosely woven fabric that the upper edge of the binding strip is liable to lag, so as not to be fed evenly with the under side of the binding strip. .iVhen, however, an upper feeding member is used such as shown in the drawing, the upper side of the binding strip which is clamped between the two feeding members will be fed with the same speed as thelower side of the binding strip and the binding strip -will therefore, be attached even, and

smoothly to the body fabric.

lt is obvious that from certain aspects of my invention, the binder may be omitted and two fabrics united edge to edge. Vhen uniting an elastic and a nonelastic fabric edge to edge, the same trouble of stretching the elastic fabric is often experienced but with my feed dog which has the raised portion operating upon the elastic goo'ds, this objection may be overcome and the two pieces of fabric evenly and smoothly united. The two fabrics to be united edge to edge would of course be fed to the stitching mechanism so that one needle would engage each fabric. Where my machine is operated to stitch two fabrics edge to edge as above noted, the upper feed may be omitted if desired as the essential function of the upper feed is to feed the binding strip both on the upper and lower surfaces even.

Having thus particularly described my invention, what lv claim as new and desire to secure by Letters `Patent is l, 'lhe combination with a needle, of a feeding mechanism including a feed dog having an integral forwardly projecting portion located entirely at one side of the needle, said feed dog extending from a point in rear to a point in front of the needle, said feed dog having a horizontal feeding surface in rear of the needle extending to a point well in advance of the-needle,and a raised fabric engaging surface at the front end of said forwardly projecting ppi-tion, and devices cooperating with said feed dog whereby said raised feeding surface secures a differential feeding effect on the material.

Q. The combination with a needle, of a feeding mechanism including a feed dog having an integral4 forwardly projecting portion located entirely at one side of the needle, said feed dog extending from a point in rear to a point in front of the needle, said feed dog having a horizontal feeding surface in rear of the needle extending to a point well in advance of the needle, and a raised fabric engagingy surface atthe front end of said forwardly projecting portion, devices coperating with said feed deg 'jaa whereby said raised feeding surface secures a diiierential feeding effect on the material, and means whereby. said feed dog may be adjusted vertically for varying the differential feeding action thereof.

3. The combination with stitch-forming mechanism including a needle, feeding mechanism including a feed dog having a portion thereof engaging the material in the rear of the needle and a forwardly extending portion located at one side of and in front of the needle, said portion in rear of the needle having a. horizontal feed engaging surface, said forwardly extending portion moving in the same timing with the portion of the feed dog in rear of the needle, and having a portion thereof located entirely in front of the needle and at one side thereof raised above the remaining feed surface of the feed dog, devices cooperating with said feed dog for seruring a differential feeding eifect upon the material, and a second feeding member lo :ated above said first naned feeding member and cooperating therewith to feed the fabric.

4. ',he combination with stitch-forming mechanism including a needle, feeding mechanism including a feed doghavinga portion thereof engaging the material in the rear of the needle and a forwardly extending portion located at one side of and in front of the needle, said portion in rear of the needle having a horizontal feed engaging surface, said forwardly extending por tion moving in the, same timing with the portion of the feed dog in rear of the needle, and having a portion thereof located en tirely in front of the needle and at one side thereof raised above the remaining feed surface of the feed dog, devices cooperating with said feed dog, for securing a differential feeding effect upon the material, and a binder located relative to the feeding mechanism so that the forwardly extending portion engages the body fabric only.

5. The combination with stitch-forming mechanism including a needle, of feeding mechanism including a feeddog having a portion thereof engaging the material in the rear of the needle, and a portion thereof engaging the materialat one side of and in front of the needle, said forwardly extending portion moving in the same timing with the portion of the feed dog in rear of the needle, and having a portion thereof raised above the remaining feed surface of the feed dog for securing a differential feeding effect upon the material, a second feeding member located above said first namedfeeding member and cooperating therewith to feed the fabric, and a binder located relative to said feeding mechanism so that the forwardly eX- tending portion of the feed dog engages the body fabric only.

6. The combination with a needle and a work support, of feeding mechanism includicc v`fabric at one side of and in front of said needle, said forwardly extending portion i having means for giving said fabric a diflit! Sil

ferential feeding movement and means whereby the position of said feed dog relaf tive to the werk support may be varied, and a second feeding member located above and coperating with said first named feeding member.

The combination with a needle and a work support, of feeding-mechanism ineluding a feed dog having a portion thereof located inrear of the needle and a forwardly extending' integral portion for engaging the fabric at one side of and in front of said needle, said forwardly extendingportion having moans for giving said fabric a differential feeding movement, means whereby the position of said feed dogrelative to the work support may be varied, a second fecd ing member located above and ceperating with said first named feeding` member, and

a binderso located relative to said feeding member that the forwardly extending portion engages the body fabric only.

8. The combination with a needle and a.

work support, of feeding mechanism includextending integral portion for engaging' the fabric at one side of and in front of said needle, said forwardly extending' portion having means for giving said fabric a differential feeding movement, means whereby the positionof said feed dog relative to the work support, may be varied, a second feed-r ing member llor'xated above and coperzrting` with said first named feeding member, a binder so lo= ted relative to said feeding,- member that the forwardly extending portion engages the body fabric only, and a presser foot 'coperating with said. feeding mechanism. y

9. The combination with two needles, of feeding mechanism including a feed dogg,l having a portion located in the rear of said needle and a forwardly extending portion located in advance of and at one side of said needles, said forwardly extending por- Y' tion having means located at one side of saidv needles for securing a differential feeding l. feeding mechanism inluding feed dog vhaving a portion locateddn ,rear of said needles and a forwardly eXtending portion. located at one side of and in advance of said needles, said forwardly extending portion having' a raised feed engaging surface, an upper feeding member cooperating with said first named feeding member and a binder so located relative to said needle as to direct the edge of the binding strip between said needles, and means for laying a thread back and forth between said needles.

ll. The combination with a needle of feeding mechanism including` a feed dog, having` a portion thereof in rear of said needle andan integral portion located at one side of and in advance of said needle, said portion in rear of the needle having a horizontal feed engaging surface, said integral portion having; a raised feed engaging surface located entirely in front of the needle and at one side thereof, a presser foot cooperatingV with said feed member and having a portion thereof at one side of the needle cut away, an upper feeding member cooperating with said lower feeding member and operating in said cut away portion of the presser foot.

12. rlhe combination with a needle, of feeding mechanism including a feed dog having a portion thereofin the rear of said needle and an integral portion located at one side of and in advance of said needle, said integral portion having a raised feed engaging surface located entirely in front of 'the needle and at one side thereof, a presser foot coperating with said feed member and having a portion thereof at' one side of the needle cut away, an upper feeding member coperating with said lower feeding member, and operating in said cut away portion of the presser foot, said upper feeding member having a lateral extension extending in rear of said needle.

18. The combination with a needle, of feeding mechanism including a feed dog having` a portion thereof in the rear of said needle and an integral portion located at one side of and in advance of said needle, said integral portion having a raised feed engaging' surface, a presser foot coperating with said feed member and having a portion thereof at one side of the needle out away, :1n-upper feeding member coperating with said lower feeding member and operating in said cut away portion of the presser foot, and a binder located in front of said needle and so positioned that the forwardly extending portion of the feed member engages the body fabric only.

' l/l. The combination with a needle, of the feedingl mechanism including a feed dog having a feeding portion in the rear thereof and an integral feeding part located in ad- Vance of said needle, said portion in rear of the needlevhaving` a horizontal feed engaging surface, said integral part having al relatively raised feed-engaging surface located entirely front of the needle and at lll? lil 5 immo@ ono sioe'thoreo, a hinged Prosser fooi; con testimony whereof I ax my Signaopomng, wn said feed member having its ture, in presence of two Witnesses. from portion pessed down by a spring RUSSEL GREEN WOODVVARD VWhol'foby said integral portion with cer- Witnesses:

'l5 amy comes -n Contact; with said presser CHESTER MCNEIL,

foot. WARD WRIGHT.