US1437847A

US1437847A - Buttonhole-sewing machine

Info

Publication number: US1437847A
Application number: US444310A
Authority: US
Inventors: Kiewicz John
Original assignee: Reece Button Hole Machine Co
Current assignee: Reece Button Hole Machine Co
Priority date: 1921-02-12
Filing date: 1921-02-12
Publication date: 1922-12-05
Anticipated expiration: 1939-12-05

Description

BUTTONHOLE' SEWING MACHINE.

y AFFLICATlON FILED FEB. 2| 192|. 1,437,847. Patented Dec. 5, v 2 SHEETBfBHE l lnvenToT: John Kiewcz?D n 6 7 3 I 5, w. o.. 2 2 ...w l 5 A. .u A 3 3 .d w LM. 2 P

Patented Dee. 5, 19.22

wir i, FMCQW' JOHN KIEWICZ, OF BOSTON, MASSACHUSETTS; ASSIGNOR TO THE REECE BUTTONI-IOLE MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION F MAINE.

IBUTTONHOLE-SEWING MACHINE.

Application led February 12, 1921. Serial No. 444,310.

To alt/whom t may concer/11,:

Be it known that l, JOHN Kinwicz, a citizen oi' thenited States, and' resident of Boston7 county of Suffolk, State of Massachusetts, have invented an improvement 1n Buttonhole-Sewing Machines, of which the 'following description, in connection with the accompanying drawing', is a specification,

. like characters on the drawing representing like parts. v

This invention relates to bnttonhole sewing machines of that type in which the needle Y turn is situated axially of the rotary block or gear by which the needle bar is given its rotative movement, and said sleeve and block are so constructed that the sleeve not only can reciprocate through the block but can have a lateral movement relative thereto. The portion of the sleeve which extends be-y low the block is provided with inclined grooves and the gear member is formed with projections which are received in said grooves, the construction being such that the reciprocation oic the sleeve through the gear member will cause the sleeve to be shifted laterally. y

ln order to give an understanding of my invention I have illustrated in the drawings a selected embodiment thereof, which will now' be described, after which the novel teatures will be pointed out in the appended claims.

Fig. 1 is a side view of a portion of a sew- Fig. 2 is a front viewot thehead.

Fig. 3 is a central sectional viewthrough the needle bar.

Figli is a section on-the line @-4, Fig. 2.

In the drawings, 1 indicates the bed of a buttonhole sewing machine and 2 the head or overhanging arm in which the needle bar 3 reciprocates. The needle bar is given its reciprocation by means of a lever 4 pivoted to the frame at 5 and connected at one end tothe needle bar by ,suitable means and having the other end connected to an eccentric strap 6 embracing an eccentric lTcarried by the shaft 8. This shaft 8 isldriven fronithe driving shaft 9 by mea-ns oi suitable gears 10 and 11, said gears being so arranged that the shaft 8 will make two rotations for each'L rotation of the driving shaft 9.

The parts thus far described are all as usual in `4sewing machines and form no part of my present invention. y yThe needle Abar extends axially through and reciprocates in.

a sleeve 12, and this sleeve 12 in turner;-` tends axially through a gear member 13, which is journaled in the head 2 and which meshes with a gear sector 14 carried by a shaft 15. This shaft `15 is turned by suitable mechanism when the stitching is being done around the end of the buttonhole, all as usual in buttonhole sewing machines of this type, -thereby to rotate the gear 13 and turn the needle bar 3 upon its axis.

The opening 15 through the gear 13 which is occupied by the sleeve 12 islarger than the sleeve so as to permit the latter kto have a lateral movement and means are provided whereby vertical reciprocating movement' of the sleeve 12 relative tothe gear 13 will cause the sleeve to vibrate laterally, thus giving the 4desired lateral vibrating movement to the needle bar. The portion 1G of the sleeve which extends below thegear 13 is rectangular in .cross section, as shown in Fig. a, and it has an inclined groove'17 formed on each of two opposite faces. The

.. held in positionby Lshaped retainers 21 carried by the ea1s18 and having portions 22 `which overlie the ends of the y blocks. These retainers areheld in adjusted position by said screws 23. n

With this arrangement it will be observed that a vertical movement of the sleeve 12 relative to the gear 13 will cause the sleeve to loo tion, but if the sleeve is raised into the'dot# ted line position, the action of the projections 2O in the grooves 17 will cause the'sleeve -to` be shifted laterally into the dotted line position, thus giving a lateral shifting "movement to the needle bar.

Means are provided vforgiving-the sleeve 12 one reciprocation foreach two reciproca`4 tions of the needle bar. Journalled inthe head2 is a shaft 24rhaving an arm 25 which is flexibly connected to the sleeve, said arm being` provided with a forked portion r26 which embraces the sleeve and each arm of the fork being slottedrto receive a pin 27 extending froin'a collar 28 that is swivelledon the sleeve. The shaft 24 4is also provided with an arm 29 which islconn'ected by a'link 30 to a forked lever 31 pivoted to the yframe at 32, the fork of the 'lever embracing va cam 33 fast on the shaft 9.

The rotation of the shaft 9 will therefore result in giving vertical reciprocation to the sleeve 12, but since the sleeve 12 is reciprocated from the shaft 9 while'the needle bar is recijiirocated from the shaft 8, the needle bar will reciprocate twice as fast as the sleeve. Consequently the needle bar will have a complete reciprocationeach time the -sleeve is moved downwardly and another complete reciprocation each-time :the sleeve is moved upwardly and as aresult the alternate thrusts of the needle will be in the full line position, F ig. 2, while the other thrusts ywill be in the dotted line position, Fig. 2.

The connection between-the sleeve andthe gear is such that the rotation of the ygear will `be communicated 'to the sleeve, and to communicate this rotation to the needle'bar the latter is provided with a lgroove 34 in which is received a key 35 carried bythe sleeve. This construction permits the needle bar 'to reciprocate freely inthe sleeve but insures that the needle bar and sleeve will always rota-te in unison. The upper end of the needle bar reciprocates through a ball member 36 which is received `in a suitable socket 37 l'formed in the head2, this ball yand socketconstruction permitting the shogging movement ofthe needlein all positions around the'butt'onhole. l

The construction herein shown is -relatively simple and provides for the necessary shogging movement of the needle, not only while the stitches are being formed/along the side of the buttonhole but also when vthe stitches are being formed around the eye of the buttonhole.

'inclined grooves, vprojections carried by the other of said parts and operating in said grooves, whereby the reciprocating movementfof the sleevethrough the gear member will move said sleeve laterally yrelative to the gear member.

2. 1n a buttonhole sewing machine, ythe combination with a frame, of a gear member rotatably mounted therein, a sleeve extending axially z`through the gear member butcapable of a lateral movement relative thereto, a needle bar reciprocatingthrough the sleeve, means tto reciprocate Ltheneedle bar, means to reciprocate kthe sleeve iin the gear member, ears depending fromthe gear member `and projections carried by said ears, said sleeve having inclined `grooves in which said projections operate, wherebylthe reciprocatimg` movement of the sleeve will move the latter laterally relative tothe gear member. f

3. 'ln va buttonhole sewing machine, the combination with a frame,fof a gear memberA rotatably mounted therein, a sleeve eX- tending axially through the gear member but capable of a lateral movement relative thereto, a needle bar reciprocating through the sleeve, means to reciprocate the needle bar, means to reciprocate the 'sleeve in the gear member, ears depending from thegear member `and projections adjustably carried by said ears, said sleeve having inclined grooves in which said projections operate, whereby the reciprocating movement ofthe sleeve will move the latter laterally relative to the gear member.`

4. In a buttonhole sewing machine, the combination with a frame, of a reciprocating needle bar therein, a sleeve through which the needle bar extends, a rotatable gear member through which'the sleeve eX- tends and by which the needlebar is rotated in stitching around the end of a buttonhole, saidsleeve being capable of a lateral movement relative to the gear member, means to reciprocate the needle bar, Vmeans to reciprocate the sleeve through the rgear member, said sleeve having-inclined grooves 4and projections 4adjustably carried by the gear member and operating in said grooves, whereby the reciprocating movement of the sleeve will move the latter laterally relative to the gear member.

5. ln a buttonhole sewing machine` the combination With a frame, of a gear member rotatably mounted therein, a sleeve eX- tending axially through the gear member but capable of a lateral movement relative thereto, a needle bar reciprocating through the sleeve, means to reciprocate the needle bar, means to reciprocate the sleeve in the gear member, said sleeve having inclined grooves, and projections carried by the gear member and o erating in said grooves, 10 whereby the reciprocating movement of the sleeve Will move the latter laterally relative to the gear member.

In testimony whereof, l have signed. my

name to this specification.

JOHN KIEWICZ.