US894977A

US894977A - Buttonhole-sewing attachment for sewing-machines.

Info

Publication number: US894977A
Application number: US30529606A
Authority: US
Inventors: Charles E Ongley
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-03-10
Filing date: 1906-03-10
Publication date: 1908-08-04
Anticipated expiration: 1925-08-04

Description

TATBNTBD'AUG. 4, 1908'.

Q.T. oNGLBY. Y BUTTONHOLT: SEWING ATTACHMENT TOR SEWING MAGHINES..

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BUTToNHoL-E SEWING ATTACHMENT PoR SEWING-MACHINES;

@vih/leones 110.8959717 PATENTBD-AUG.4,1908.

c. E. oNGLY. BUTToNHoLT: SEWING ATTACHMENT Toa SEWING MT-.GHINES- APPLIOATIOH FILED HAB. 10, 15'00- A A 3 SHEETS-SHEET 3.

CHARLES E. OXGLEY, OF NEW YORK, N. Y..

Specicationol Letters Patent.

PatentedAug. 4, 1908.

Application led March 10, 1906. Serial No. 305,296.

To all 'whom 'it V'may concern.

Be it known that I. CHARLES E. ONGLEY,

'a citizen of the United States, and resident of the borough of Manhattan, in the county of New York and State of X ew York, have invented certain new and useful Improvements in Buttonhole-Sewing Attachments for Sewing-.\Iacl1ines, of which the following is a specification.

This invention relates to a button hole sewing attachment for sewing machines. Its organization comprises means that can be easily attached to a sewing machine, and with which the stitches for a button hole can be readily sewed.

It comprises essentially a clamping device for holding the oods to be sewed, and means for moving sai device in an ap roximately ovalpath, under the point of t e needle of the sewing machine to which it is attached.

In the accompanying drawings, Figure 1 represents a plan view of the invention, Fig. 2 shows a front elevation of Fig. 1, with a fragmentary portion of a sewing 4machine partly in section, Fig. 3 is a section of Fig. 1 on the line 3, 3, Fig.` 4 shows a partial section of Fig. 1 .on the line 4, 4, F i0. 5 represents a partial section of Fig. 1 on

t e line

5, 5, Fig. 6 shows an end view of Fig. 1 looking in the direction of the arrow 6, Fig. 7 represents a plan view of the bed plate of the invention, with some of its appurtenances.

The invention is represented to comprise a bed plate or frame 20, which is secured to the frame 21 of a sewing machine with the screws 22. On the bed plate '20 are fastened guides 23 with the screws 24, that guide the main sliding plate 25, from `which latter extends the lug 26, .that carries the pin 27 for the link 28. Arms 29 extend from the main slidinor )late 25, on the ends of which are formed bosses 30, which latter have o .enings for the longitudinal guide bars 31. lhe said guide bars havel each a collar 32 at one end, and a nut 33 at the other end Io hold them in place in the bosses 30. Cross hars 34 have formed therewith the'lugs 35. and are secured into the lugs 36, the lugs 35 and 36 being supported on the longitudinal guide bars 31. A secondary sliding plate 41u has extendirng therefrom lugsl 41 that are su portedon the cross bars 34. The plate 41D as the knee 42, to

which is iastened the lower plate 43 of a clamping device for the materlal to be operated upon, by means of the screws 44, the holes in the knee 42, being elongated to adjustably secure the plate 43. From the plate 43 extend pillow blocks45, that have the journal in 46, which carries the and the atter has secured thereto t 1e up )er plate 48of the said clamping device. he plate 48 has an opening v49, and has secured thereto a s ring 50 with the screws 51. A clamping b ock 52 is pivoted from rongs 53, extending from the spring 50. rom the late 47 extend the illow blocks 54, in which Fatter is journaled t e lever 55, by means of U'rfEDsarTns Pgurnsr oFFICE. y

late 47,-

the pin 56. The lever 55 has the o enings 57 A journal bracket 63 1s secured to the sideAV of the bed plate 2() with the screws 64. The said bracket supports a lstationary shaft 65, with a collar 66 at one end, and a nut 67 at the other end. A bell crank 68 with the

arms

69 and 70 is .journal-led on the shaft 65. The arm 69 has the forked end 71, that is supported on a screw 72, extending from a co lar 73, which latter is secured to the needle bar 74 of the sewing machine. The arm is pinned to a pawl 75, with the hook end 76 that engages withthe teeth-77 of a ratchet wheel that is formed with or extends from the spur gear 78, and referabl has eight teeth. The said gear is Journale on a. journal pin 79 screwed lnto the bed late 20.A A pinion 80 generally one fourth o the diameter of the gear 7 8, mesheswith the latter, and is formed with a sleeve 81 that is journaled on a pin 82, which latter is fastened to the bed plate 20. A screw 83 with head 84 is secured into the pin 82, and holds the sleeve 81 from vertical displacement. The upper end of the slccr'e 81 1s formed with a guide 85 that carries a nut 86, into which is screwed a journal pin 87 for the link 28. A lug 88 extends from the bed plate 20, and it has an opening 89, which forms a bearing for a swinging adjusting bar 90, that bears against the outer face of the guide 85. A post 91 extends from the bed plate 20, and a.

of which is formed the gear 96, that meshes` with the internal oval gear 97. The latter is formed of an oval ring that is located en vthe top face of the secondary )late 40. From the' said gear 96 extends a oss or roller 98, which beais against an oval projection 99,

, extending from the cover plate 100, which latter with the oval internal gear 97 is fastened in place to the )late 40 witt the sci'ews 101. The lower enti of the spindle 95 has 'secured thereto the worm wheel 102, that meshes with the worm 103 of the worin shaft 104. The said worm shaft is supported in journal bearings 105 and 106, that extend from themain sliding plate 25. /A collar 107 on the worm shaft bears against the bearing 105, and a. sleeve 127 is carried on the other end of the said worin shaft. To the sleeve 127 is pinned a -pawl 108, that engages with a. ratchet wheel 109,A a nut 110 holding said ratchet wheel `in place.` `A pin 111 extends from the sleeve 127, and is straddled by a forked end 112, of a lever 113, that is journaled to a boss 114 ext/ending from the bed plate 20. The bed plate 20 has a suitable o ening 115, for the operation of the worin s aft 104 with its appurtenances. The lever 113 has a knee 116 which is lscrewed to the feed arm 11T of the feed mechanism of the sewing machine. The throat plate 118 of the sewing machine has a suitable opening f 119. for the knee 116, and an opening 120 for the needle 121.

To operate the invention a piece of materia-l 122 to'be operated upon, is placed over an opening in the plate 43, the plate 48 having een raised by means of the lever 55. The clamping block 52 bearing on said material, holds itV securely in lace. The sewing machine is then startet and the needle bar 74. reciprocating actuates the arm 69 of the bell crankl 68, and the arm 70 of said bell crank reciprocates the pawl 75. The latter engages with the teeth 77 of the ratchet wheel, by means of which the spur gear 78 is interiiiittentliirotated. The gear 78 drives the pinion 80. and consequently the pin 87, the axial line of which latter is out of line with the axis of the iinion. The pin 87 is intermittently rotated around the axis of the pinion 80. The distance between the axis of the pin 87, and axis of the said pinion being adjustable, by clamping the nut 86 in differ ent positions. The swinging adjusting bar 490, bearing against the face ot' the guide 85,

secures equal amounts of rotation for the pinion 80, each time it is'actuated by the spur gear 78. If the bar 90 is omitted the amount of rotation given to the pinion 80 by the spur gear 7S may not always be the saine, on account of diferences of friction between the part-s conneccd with said elements, and also on account cf the variable amounts of friction between said elements. The amount of rotation imparted to the said pinion may also vary on account of the back lash between said pinion and said spur gear. -The swinging at justiiig liar 90 bearing against.

the outer face of the guide forces the pinion 80 to be rotated equal amounts when actuated by the spur gear 78, because should the face of the guide 85 be moved to an angular position with respect to the bar 90, the latter bearing against the same will turn it vso that said face bears against said bar. The equa-l amounts of rotation given to the said pinion is necessary to obtain equal lengths of stitches during the operation of the. machine, and thereby controlling the uniformity of the lengths of the stitches.

By the rotation of the pin 87, the pin 27 is reciprocated, b v virtue of which the main sliding plate 25 is also reciprocated to an amount Vequal to the length of each stitch sewed for the` button hole. During the reciprocation of the main sliding plate 25, the clamping block 52' with the material to be operated upon, iscari'ied approximately in the path of an oval. The feed arm 117 swingst-he knee end 116 of the lever 113, and by virtue thereof the forked end 11'2 of the lever 113 swings the pin 111 and the sleeve 127. The latter carrying the pawl 10S, which engaging with the ratchet wheel 109, intermittently rotates the latter, and therebv the worin shaft 104'. The said worin sha intermittently rotates the worm wheel 102, and hence the gear 96. The latter meshing with t-he oval internal gear 97 carries the latter by means ol its forni in an oval path, and with it t-he secondary plate 40 and its appurtenances, that comprise the clamping device, and the material operated upon. The guide bar's 31 and 34 allow the oval gear to move in a line parallel to the longitudinal axis of the. machine, and in all directions making angles therewith. The combined movements of the' oval gear and the intermittent rotations of the pinion 80,'bring the material in pro er positions for the needle 1'21, to sew the stitches of the button hole.

Having described niv invention, I claim:

l. in a button hole sewing attachment for a sewing machine the combination of a frame, a main sliding plate thereon, a secondary sliding plate on the main sliding plate, connections between the needle bar of the sewing machine and the main sliding plate, con nections between the feed mechanism of the sewing machine. and the secondary sliding plate, and a clamping device to hold a ruaterial secured to a secondary sliding plate.

` '2. `In a button hole sewing attachment for sliding plate, means' to reciprocate the said plate, means to vary the length of said r-e ciprocations, guide bars parallel to the di rections of said reciprocations supported en the sliding plate, a secondary sllcing plate F over the main sliding plate, cross bars supported on the said guide bars and atright i angles thereto, means to move the secondary plate on the cross-bars, and a clamping device to .hold a material adj ust'ably secured to the secondary plate.

for sewing machines the combination of a bed plate, a main sliding plate on the bed plate, a link pinned to said main plate, a spur gear journaled on the bed plate, means to intermittently rotate the gear, a pini-en meshing with the spur gear, a guide extending from the said pinion,- a nut carried in the guide, a4 journal pin screwed into the nut to clamp the latter in various positions in the guide, one end of said link engaged by the journal pin, a swinging adjusting bar fulcrumed on a lug extending-fromthe, bed plate, the free end thereof bearing against the said guide, a post extending from the bed plate, aspring extending between the post and the said adjusting bar, a secondary plate carried on the main sliding plate, means to reciprocate the secondary plate in directions parallel to the direction of the movement-s of the main plate and at right angles thereto, and a clamping device secured to the secondary plate.

4. In a button hole sewing attachment for sewing machines the combination of a bed plate,`a main sliding lplate on the bed plate, means to reciprocate the main sliding plate. means to vary the lengths of said reciprocations, guide bars carried on the said main sliding plate, cross bars supported on the guide l bars, a secondary sliding plate 'supported on the cross bars, a worm shaft journaled below the main' sliding plate, a spindle supported on and journaled through the main sliding plate, a worm wheel secured to the lowerend of the spindle meshing with the Worm shaft, a spur gear extending from the upper end of the spindle, an oval internal gear carriedon the secondary sliding plate, and meshing with the said spur gear, means to maintain the spur gear and internal gear in mesh, means to turn the worm shaft, and therebyT more the internal gear in an oval path, and a clamping device secured to the secondary sliding plate.

5; In a button hole sewing attachment for sewing machines the combination oi a.

bed plate, a main sliding plate 011 the bed plate, means to reciprocate the main sliding plate, means to vary the lengths of seid reciprocations, guide bars carried on the said main sliding plate, cross bars supported the main s iding plate, a worm wheel secured to t-he lower end et' the spindlemeshing with the worm shaft. a spur gear extending from the upper end of spindle, an oval internal gear carried on the secondary sliding plate,

i and meshing with the said spur gear, a boss extending from the upper face of the spur gear, a cover plate cn the said internal gear, 3. In a but-ton hole sewing attachment i sliding plate, crrss bars sup-,ported on the guide bars, a secendary sliding plate supported on the cross liars, a wenn shaft journaled below the main sliding late, a s mdle supportedl on and journal throug the. main slidlng platea worm Wheel secured to the lower-"end or' the spindle and meshing with the worln s'aaft, a spur gear extending from thepper eind of the' spindle, an ova internal gea "carried on the secondary sliding pla-te, and 1n with the `mid s )ur gear. means to main e. Ihe spur gear and internal gear in mesh, ye carried on the worm sha-ft, a'pawl secu? d'to the sleeve, a ratchet wheel -fastened t@ thewvorrni shaftand engaged by the paml. apinextending from the sleeve, a lever t'urcrnmed to the bed plate of thc said attachment, atoried end formed with the said lever straddling' the said in, the other end of the lever secured to the eed mechanism of n sewing machine, and a clamping devicesecured to the said secondary plate. l. v

7. In a button isole sewing attachmept the. combination of a ined plate secured to asewing machine, a sliding plate guided\on the bed plate, a. spur gear jenrnaled on the bed plate, a ratciriet wheel extending from the gear, a journal bracket extending up from the bed late, a. straftsu ported in the jonrnal brac et, s. bill cran pinmaled on the shaft, one arm osad bell crank connected to the needle bar @E time sewing machine, a pawl pinned to the otherann of the bell crank and engaging with the ratchet Wheel to intermittently rotate the Latter, a pintien journaled on the b'ed plate :and meshing with the spur gear, connections between the main sliding plate and pinion ma reciprocate the said main sliding plate, a semindary sliding plate on the sewing machines the combination of a main l on the guide bars .a secondary sliding plate Y supported von the cross bals, a worm shaft journaled below the main sliding plate,- a. l spindle su ported en and journaled through ism of the sewingmachne tolnove the latter f A. D.'1{j.

y, mg machlne, and a clam mg device to hold g secured to the sai secondary sliding plate.

main sldn@r late, means between the said of New York in the county of New York and secondary sic ing plate and the feed mechany State 0E Sew York in au oval path under the needle of the sewl CHARLES E OGLEY I a material to be o erate upon, adjustably A'tnesses:

W. H- BoWIE, v

Signed at the borough of Manhattan, city )L H. COOK.

, this 8th day of Marchlpl