US1579533A - Sewing machine - Google Patents

Description

April 1926.

A. McD HESS E N MACHINE 2 sheets sheet 1 Filed April 28, 1924 fi @Lo-Q'MRNEY A ril 6, 1926.

A. M D. HESS SEWING MACHINE Filed April 28, 1924 2 Sheet -Sheet 2 INVENTCIJR [Ii MM j trroimav Patented Apr. 1926'.

V UNITED STATES PA TI OFFICE? WEB IUD. HESS, OI FBOQKLYN, iEW YORK.

' snwnre magma.

Application miss as, 1am. Serial 104mm.

- To all whom it mag concern: 4

' The main object "Hnss, a citizen of the 'America, residing at Brookl Kings,

Amxammn McD. United- States of n, cou'nty'of and State of New ork, have invented new and useful Improvements in Sewin Machines, of which the following is a specification. a This invention relates to machines for stitching fabrics or other'materials'and commonly referred to as sewing machlnes.

Be it known that .I,

mount the needle and its connections that it may be caused to deviate from the usual straight row ofstitching according to conditions external to the machine such as projections from the surfacev of the fabric or a other guiding means.

-ment without the ta fla upon the good cu d thereto; if .th ough the hooks and close to the ights A further object of the inventionis to provide means whereby the needle is" caused 'to so deviatei'from this usual straight line' stitching as to correspond with exterior conditions such as projections upon the work or other defining means.

The invention will be found of great usefulness in connection with the securing hooks (if hook and e and the like.

hook tape, ent or insecuring-the hooksto the garthe hooks are usually ate and are caused to lie are more firmly sea line of stitching asses e combinations to garments n stitching a coverm to the se ured at their eye s and of he hooks. With the usual machine, how ever, such stitching cannot be performed because the sewin mechanism cannot pass over the hooks.

them.

{Other and ancillary objects of the inven 1 tion will appear heremafter.

In the accompanyi drawin whi h i1- lustrate the inventiom- Fig. 1 is a side elevation, part1 broken away and partly in section, of the ead o f. a

sewing machine embodying the invention;

Fig. 2 is a section on the line 2 -2 of Fig. '1 showing the needle in one p Fig. 3 is asection on .t e line 3-3- 0 1s a side elevatlon'jrom the right of the invention is to so' in securing thls tape to t e gare resent invention provides a solution of this difliculty in that the desired ,line of stitchirtrhg may be made, the

' needle passing around hooks as reaches itio'n a hand side of Fig. 1 of the lo wer portion .of

comprises the usual sewlng machine in which arm or frame 1 of a is rotatably mount- .ed a drive shaft to. which is fixed the wheel 7 is a view the same as shown in Fig.

the needle in diverted posi- 'tion for avoi ing the hook. I

e drawings, the apparatus 2. Mounted upon the arm is a post 3. -Journaled upon the post 3 is an arm 51 in the outer end of wh ch reciprocates the needle bar 5, the needle 6 being fixed in its lower end in the usual'I fashion and being thusj driven toward and away from the work. Secured to the end'of the arm *4 is a link 7 "connected by a spring'8 with the frame or 8 The sewarm of the machine by a screw 9.

ing thread '10 after'passing through the usual giiiding andtensionin devices passes throug the eye of the need e 6 in the usual manner. The spring 8 is so arranged that it tends to'hold the arm 4 in theposition as shown in Fig. 2' but may be moved against the tension of the s rin to cause the needle bar to move lateral y,- t ahead or frame being provided witlr s this movement of fithe needle bar.

A presser foot 13 secured to the frame or ots 11 and 12 to permit arm 1 is provided and may be of usual 0011- v struction exceptfthat it. has a transversely extending arc-shaped slot 14 to permit lateral movement of the needle andalso' a lon gliltudinal extending recess 15 which permits t e as the goods or work is advanced in the' ,sewing operation. 1 v v V Also the machine has the. usual table 17 upon which the work rests and in which hook 16 to pass beneath the presser footmounted the usual work advancing dog 18,-

it. being understood that the apparatus is provided the stitching operation.

The needle bar is driven -b clam 19-fastened uponiitan means of; a connected by a and socket connection 20- with a; driv- $2110 I with-the usual shuttle and other well -known-.-.de vices necessary to complete e 26 upwar ing rod 21 carrying a ball '22 at its other end which is fitted within a socket mounted upon one side of the driving wheel2.

.Fixed to the arm or frame Iris a depending bracket 23 in the lower end of which is journaled a shaft 24 which has fixed to one end, the arm 25 extending at its upper end in proximity to the needle bar, and to the other end of the shaft 24 is fixed an arm 26' operatively related to an arm 27 by a pin and slot'connection 28. The lower end of the arm 27 is secured to a lever arm 29 which is bifurcated into the two branches 30 and 31 which are pivoted at 32 and 33 in the bracket 34 fixed to the top of the presser foot. It is to be observed that the branch 30 is atthe edge of the presser foot whereas the branch 31 is over the needle slot in the presser foot.

Secured to the branch 30 and extending into the needle slot in the presser foot and alongside the needle, is a cam plate 35 adapted to engage a hook 16 or other projection upon the goods.

It will now beapparent that, the needle being in'the position with relation to the presser foot as shown in Figs. 1 and 6, the row of stitching 36 will be straight until the lower face of the cam 35 comes against the hook 16. The further progress of the fabric being sewed, or ,work, with the hook upon it will cause the cam to ride upon the hook pressing the arm 29 upwardly, the bifurcated portions30 and 31 turnin about the pivots 32 and 33. The outer en of the '1 arm 29 thus rising, the arm 27 will be pushed uplwardly thereby pushing the arm y-and turning the-shaft 24. This will turn the arm 25 throwing its upper end against the needle barand pushing it laterally into the position as shown in Fig. 7'

where, it will be seen, it is thrown to one side of the hook and upon further advance of the goods or work passes around the hook, the cam 35 after it has passed the hook dropping back to its normal position and permitting/the needle bar to returnto a position to stitch in the straight line of the row under the action of the spring 8, and this can take place as often as a hook or other reject on upon the work is encountered. t will be apparent also that the needle bar being free to move laterally but being held resiliently in normal position, it may be moved laterally in response to pushes of the hand of the operator as maybe required or in response to the outline of various patterns or in other ways and for various other sewing operations as well as that in relation to the securin of hooks. It will also be seen that the needle may be maintained in its displaced position, and place the stitching accordingly, by length-- the operating face of the cam 35 to the desired extent and also the row of stitchnot be made so. steep ing may be made to have any desired course A A by varying the depth of the cam surface at different points so that the needle is moved laterally back and: forth accordingly. I

As is well known in connection with the usual sewing machines the work advancing,

engage the work and leave itstationary under the needle and at the same time the dog moves backwardly to be in a position to again move upwardly and forwardly to again advance the work. The apparatus as is well known, is so related and organized that the work is advanced while the needle is in raised position so as to be clear of the work.

This being the interval that the work is .moved, it will be during, this interval that the hook is forced beneath the cam so that the lateral movement of the needle barin response to the rising of the cam 35 will take .place when the needle isclear ofthe goods so that it is free to make such movemen Also the rising of the dog to engage the goods may be taken advantageof for another purpose. In order that the cam 35 may rise .quickly on encountering a hook, its inclined.

face maybe made quite steep so that it may require considerable force to force the cam upwardly by its engagement with the hoop. o aid in raising the cam a foot 37 is fixed to the arm 30 of the bifurcation and passing down alongside the presser foot engages with the work 38 traveling in closerelationship thereto, directly over the dog 18 so thatias the dog rises as before referred to it will raise the foot 37, the arm 30, the arm 31 and the 'cam 35 connected thereto so that to accomplish the remainder of the movement the inclined face of the cam need and the certainty and ease of operation of the shifting of the needle is more readily accomplished.

While the invention has been illustrated in what is considered its best application it may have other embodiments without departing from its spirit and is not therefore limitedto the structure shown in the drawg What I claim is:

1. In a sewing machine, the combination I said bar to move laterally of its path of said 2.: In asewing machine, the combination 120 'with a needle bar reciprocating toward and reci rocation, and means cooperatin with ro ections on the work for moving t e said I Ear laterally.-

3. In a sewing machine, the combination with a needle bar reciprocating toward and away from the work, of means mounting said bar to. move laterally ,of the. path of said reciprocation, a spring holding said bar in one lateral position and means cooperatingvwith projections on the work for moving said bar laterally against the force of said spring.

response to movement of said cam caused by,

4. In a sewing machine the combination with a needle bar reciprocating to drive the' needle towardand away from the work, of

means for mounting said bar to move later-i ally with. relation to said reciprocating path, a cam passing in proximity to the work and adapted to be moved by projections thereon and operative meansbetween said cam and said needle bar adapted to cause said bar to inove laterally of said reciprocating path in response to movement of said cam caused by engagement with said projections. I

5. In a sewing machine the combination with a needle bar reciprocating to drive the needle toward and away from the work, of I means for mounting said bar to move laterally with relation to said reciprocating path, a'cam passing in proximity to the work and adapted to be moved by projections-thereon and operative means between said cam and said needle bar adapted to cause said bar to move laterally ofsaid reciprocating path in engagement with said projections, arid a spring biasing said needle bar in a direction lateral to said reciprocating path.

6. In. a sewing machine the combination with a needle bar reciprocating'in a path todrive the needle to and from the work, arms of said cam forces said bar laterally of said path. I i W 7. In a sewing machine the combination with a needle bar reciprocating in a path to pivoted to the head of said machine in which said bar reciprocates; said arms being adapted to turn on said pivots laterally of said reciprocating path, a spring tending to hold said bar in one position laterally of said path, a presser foot, a cam movably mounted on said presser foot, and means opera tively connected with said cam androperatively related to said bar whereby raising of ..'drive"the needle to and from the work, arms said cam forces said bar laterally of said I path,.,a work advancingdog and means cooperating with said dog adapted to assist the operation of said cam in shifting said bar.

In testimony whereof I have signed this specification this 25th day of April, 1924;.

r ALEXANDER MOD. HESS.

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