US1312866A - Planoqraph co - Google Patents

Description

L. ONDERDONK.

SEWING MACHINE.

APPLICATION FILED APR. 4, 1914.

Patented Aug. 12, 1919.

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SEWING MACHINE.

APPLICATION FILED APR- 4.1914

Patented Aug. 12, 1919.

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L. ONDERDONK.

SEWING MACHINE.

APPLICATION FILED APR. 4. 1914.

Patented Aug. 12, 1919.

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L. ONDERDONK.

SEWING MACHINE.

APPLICATION FILED APR.4.1914.

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SEWING MACHINE.

APPLICATION FILED APR.4.1914.

Patented Aug. 12, 1919.

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UNITED STATES PATENT OFFICE. I

LANSING ONDERDONK, on NEW YORK, N. .Y., ASSIGNOIB. o UNION sPEoIA MACHINE COMPANY, or CHICAGO, ILLINOIS, AconroRAr oN or ILLINOIS. v

SEWING-MACHINE.

Specification of Letters Patent. 7 Patented Aug. 12, 1919.

Application filed April 4, 1914., Serial No. 829,506.

To all whom it may concern:

Be it known that I, LANSING ONDERDONK, a citizen of the United States, residing at New York, in the county of New York, State of New York, have invented certain new and useful Improvements in Sewing-Machines, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon. V

The'inventlon relates to new and useful improvements in sewing machines, and moreespecially to sewing machines having a main feeding mechanlsm and an auxiliary feeding .member which operates upon the fabric in advance of thestitching mechanism. 7

An object of the invention is to provide a sewing machine of the above character with means under the control of the operator for varying the feeding action of the auX- iliary feeding member, and also means under the control of the operator which is independent of the first named means for rendering said auxiliary feeding member ineffective.

A further object of the invention is to provide a feeding mechanism having an auxiliary feeding member in advance of the stitching mechanism, with a cooperating separating plate and presser foot, which is yieldingly pressed into cooperative action with said auxiliary feeding member.

A further object of the invention is to provide an overseaming machine having overedge stitching implements, and an auxillary feeding mechanism operating in advance of said overedge stitching mechanism to engage th under face of the material and feed the same to said stitching mechanism,

Fig. 2 is a vertical sectional view through the Work support, showing the head of the machinein end elevation;

Fig. 3 is a horizontal sectional view with the work support removed, and showing the feeding mechanism in plan View;

Fig. 7 is a detail in side elevation show ing the pre'sser foot, a portion of the. feed and work support, the separating plate and the means for supporting the same, said separating plate being raised to inefiective posltlon Fig. 8 is a similar view, showing the s'epa-f rating plate lowered for cooperation with the auxiliary feeding member. s

Fig. 9 is an enlarged detail, showing the separating'plate, the'pressefr foot, the'feed ing members and the relation of the fabric thereto. i

Fig. 10 is a similar view with the separating plateraised out of operative position.

'The machine to which my invention has been applied, consists of a bed plate 1 having a standard 2' carrying an overhanging arm 3, in which a needle bar 4: is reciprocated by a needle lever 5 connected with the needle bar by a linkGLjThis needle lever is pivoted at 7 to the standard2, and is oscillated by a link 8, which cooperatesrwith' an eccentric 011 the main shaft'9.

A work support 10 is mounted on said bed plate 1, and is provided with a throat plate 11 having suitable feed slots 12 and a needle throat 13.

The needle bar l carries a needle 14. A thread-carrying looper '15 cooperates with. said needle beneath the work support. This looper 15 is mounted on a looper-carrier 16, oscillated by a link 17 connected to a rock frame 1'8,which in turn is connected by a link 19 to the needle lever extension 20. Cooperating with said looper 15 and with the needle abovethe work support, is .a second thread-carrying looper 21, fixed to a short shaft mounted in suitable bearings 22. Said shaft also carries an arm 23,'with which a link 24 is connected, and this link 24 in turn cooperates with a crank 25 on the end of the main shaft 9.

This overedge stitching mechanism, consisting of the needle and the two threadcarrying loopers, forms no part of the present invention, and further description thereof is not thought necessary.

The fabric is fed to the stitching mechanism and away from the stitching mechanism after it is stitched by a main feed dog 26. This main feed dog 26 is carried by-a main feed bar 27, (see Fig. The feed bar 27 is pivotally connected to a feed rocker 28. This feed rocker 28 is pivoted at 29 to the bed plate 1. An arm 30 is rigidly secured to the feed of the rocker by suitable screws 31, and this arm 30 cooperates with an eccentric strap 32, which in turn co operates with an eccentric on the main' shaft 8.

This eccentric on the main shaft oscillates the feed rocker 28 and moves the main feed bar 27 back and forth. The main feed bar is raised and lowered in proper timed relation to its reciprocations by an eccentric 33, carried by the main shaft 9, and engaging a hardened plate on the lower face of the main feed bar. A bracket 34 also attached to the main feed bar engages the lower face of the eccentric, so that the main feed bar is positively raised and lowered by this eccentric. This main feed dog 26, as clearly shown in Fig. 6 of the drawings, engages the fabric both in advance and in rear of the needle.

Cooperating with said main feed dog is an an auxiliary feed dog 35. This auxiliary feed dog 35 is adjustably attached to a bracket 36, which is carried by an auxiliary feed bar 37. The auxiliary feed bar 37 is mounted to slide in a bracket 38 attached to the main feed bar. This bracket is so constructed that the auxiliary feed bar only has an endwise movement relative to the main feed bar.

In other words, the auxiliary feed bar moves up and down with the main feed bar, but is moved back and forth relative to the main feed bar by an indirect connection with the feed rocker 28.

Mounted on the feed rocker 28 is an up wardly extending bracket 39, formed with a segmental slot 40. The auxiliary feed bar 37 has an upwardly projecting perforated lug 41. A link 42 is pivoted to this lug 41, and is also pivoted to a block adapted to slide in the segmental slot 40. The sliding of the block in the segmental slot 40 varies the distance of the pivotal connection of the link to the bracket 39 from the pivotal support of the bracket. When this block is raised in the slot and moved a greater distance away from the pivotal point 29 of the point 29 and the point of attachment of the main feed bar to said feed rocker, and, therefore, the main feed bar and auxiliary feed bar will move back and forth substantially in unison.

This shifting of the link 42 in the seg-' mental slot 40 provides means for varying the throw of the auxiliary feed dog 35. Said link is shifted by an arm 43 connected by a link 44 to the sliding block, so that when said arm 43 is raised, the'block will be raised in the segmental slot and when the arm 43 is lowered, then said block will be lowered in the slot.

The arm 43 is attached'to a shaft 45 mounted in suitable bearings in the bed plate 1. This shaft, as clearly shown in Fig. 3, extends to a point adjacent the standard 2, and carries an arm 46 which is connected with a suitable treadle or knee shift, so the operator may at will oscillate the shaft 45,

and without stopping the action of the throw of the auxiliary feed dog, without stopping the stitching mechanism, per 86, also form no part of the present invention, but are shown, described and claimed in the application of James R. Mofiatt, Serial No. 703,650, filed June 14th, 1912.

Cooperating with the main feed dog 26 is a presser foot 49. This presser foot 49 is carried by a presser bar 50 mounted to slide in the overhanging arm and spring-pressed against the work support by the usual leaf spring 51. The presser foot is pivoted at 52 to its supporting shank, and a spring 53 normally presses the outer free end of the foot against the material. Said presser foot is provided with a yielding rib 54, pivoted at 55 to the presser foot, and located in a slot in the presser foot extending in the line Located in advance of the 'presser foot is a combined separating plate and auxiliary presser foot 59. 7 This separating plate cooperates with the auxihary feed dog alone.

"Said plate is attached to an arm 60, fixed to a shaft 61, mounted in a bracket 62 fixed to the upper face of the work support at one side of the line of feed. A collar 63 isattached to the shaft at one side of the bracket 62, and a depending arm 64 is attached to the shaft at the other side of said bracket. The collar and the depending arm prevent the shaft from moving endwise in the bracket. The arm 60 is adjustably attached to the shaft 61 by suitable set screws 65.

A spring 66 engages at one end the depending arm 64 on the end of the shaft 60, and at its other end bears against a project ing lug 67 fixed to the work support. This spring normally tends to swing the arm 64 so as to yieldingly press the separating plate 59 against the work support'and in contact with the auxiliary feed dog.

When it is desired to ruffle or gather a single ply of fabric, it is inserted in the machine underneath this auxiliary presser foot 59, which yieldingly presses the same against the work support. The auxiliary feed dog is set so as to have a differential feeding movement, and this auxiliary feed dog will engage the fabric, press against the same by the auxiliary presser foot, and will gather or ruffle the same and feed it underneath the main presser foot, where it 'is engaged by the main feed dog and conveyed to the stitching mechanism.

When it is desired to ruffle or gather a lower ply of fabric and stitch the same to an upper ply of fabric which is not to be ruffled or gathered, then the upper ply is fed over the top of said plate 59, which be-' comes a separating plate, separating the two plies of fabric and preventing theauxiliary feed dog from engaging said upper ply.-

While I have referred to the action of the auxiliary feeding member as a ruflling or gathering action, it will be understood that the purpose of this feeding member depends upon the amount of differential movement given thereto. If the differential movement is considerable, then the fabric may be ruflled, while if the feeding action is less, then the fabric may be only slightly gathered or fulled as it is fed to the stitching mechanism.

It is often desirable to feed and stitch a knitted or elastic fabric to a non-elastic fabric. The operation of the feeding elements upon the elastic fabric sometimes stretches the same. With the above described mechanism the auxiliary feed dog may be given just sufficient throw .to gather the elastic material fed underneath the separating plate, so as to make up for any stretching action which may occur thereon, during the manipulation of the same, and thereby said elastic material may be fed and stitched to the non-elastic strip, which is fed over the separating plate without any undue stretching of the same.

In order to facilitate the insertion of the material in the machine, I have provided a cam lever 68, pivoted to the work support at 69. This cam lever is formed with a cam end 70, adapted to engage the depending arm 64, and is'also provided with an out wardly extending handle 71. When the cam lever-68 is in the position shown in Fig. 8, the cam end 70 thereof is outof engagement with the depending arm 64:, and the spring 66 performs its normal action of yieldingly pressing the separating plate into cooperation with the auxiliary feed dog.- When, however, said cam lever 68 is swung to the position shown in Fig; 7 or the position shown in Fig. 6, when the arm 64 is moved toward the lug 67, compressing the spring 66 and raising the separating plate from the auxiliary feeddog. By this movement of the separating plate the same israised so as to permit the ready insertion of the lower ply of material underneath the same. v I am able by this movement of the separating plate to accomplish another: and important function, which isthe rendering of the auxiliary feed dog ineffective. It-is well understood that when a feed dog moves up ward through a'feed slot into engagement with the material, some cooperative member is necessary to press the material against said feed dog, in order to secure a feeding action thereof. When the separating plate is raised from cooperative relation to the aux iliary feed dog, then there is nothing to hold the material against this feed dog, and the feed dog will move back and forth without 7 cooperative relation with. the auxiliary feed 7 dog.

The work support 10 is provided with a movable extension 7 2. This movable extension is pivoted to the under side of the work support, and carries the bracket 62 which supports the separating plate and the con trolling devices therefor. The extens1on 72 may be moved away from the stitching mechanism, and when moved into normal position may be yieldingly held therein by any suitable mechanism. This extension is shown more fully in my prior Patent No. 962,97, granted June 28th, 1910'.

The machine to which my invention has been applied is a machine of the overedging type, wherein thread-carrying implements move around the edge of the material. These thread-carrying implements are guarded and protected by a covered plate 7 3. lrVhen it is desired to gain access to the thread-carrying implements for threading the same, the extension 72 is swung away from. the work support, carrying with. it the supporting plate, and this gives access to the cover plate, so it may be swung to give in turn access to the parts in rear of the same.

An edge guide 74 is adjustably attached to the work support by a screw 75 passing through a slot in the shank of the guide, as clearly shown in Fig. 6.

The present machine is also provided with a trimming mechanism consisting of a stationary blade 76 and movable blade 7' 7, for trimming and preparing the edge to be overstitched in advance of the stitching mechanism. This trimming mechanism forms no part of the present invention, and further description thereof is not thought necessary.

By the above construction, wherein a separating plate is'yieldingly pressed into contact with the work support, I am able to obtain a more eflicient gathering action of the auxiliary feed dog. When the auxiliary (feed dog moves above the plane of the work support, the fabric is at once pressed against the yielding separating plate, which yields and allows the auxiliary feed dog to move slightly above the plane of the work support, maintaining its engagement with the fabric, and this yielding plate will hold the fabric in engagement with the auxiliary feed dog until it has reached the complete end of its stroke and is lowered beneath the plane of the work support. This will be apparent from Figs. 9 and 10 of the drawings, wherein the work support is indicated by the broken line zuw.

The operation of my device will be apparent from the above description. WVhen it is desired to stitch or overedge a single ply of material, and either gather the same or feed the fabric so it will not be unduly stretched, if it is an elastic one, then the ply is inserted underneath the auxiliary separating and pressing plate, and the auxiliary feed dog given sufficient differential throw to feed the fabric a little faster than the main feed dog receives and feeds the fabric to the stitching mechanism.

If at any time it is desired to render the differential feeding mechanism ineifective, the presser plate may be quickly raised through the lever 68. On the other hand, if it is desired to vary the differential feeding movement of the auxiliary feed dog, this can be readily done through the knee shift or foot treadle connected to the controlling lever 46. When it is desired to stitch two plies of material together and gather the lower ply only, then the upper ply is fed over the top of the separating plate 59, and the auxiliary feed dog will not engage the same.

It is obvious that minor changes in the details of construction and arrangement of parts may be made, without departing from the spirit of the invention, as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

l. A sewing machine including in com- I foot coopera ing with said main feeding member, a yieldingly supported separating plate located wholly in front of the workengaging surface of the presser foot and cooperating with the auxiliary feeding memher, and means for raising said separating plate, whereby said auxiliary feeding member is rendered ineffective, said separating plate being so constructed that the ply of fabric to be gathered may be fed underneath the same while the ply to which the gathered fabric is stitched is fed over the same.

3. The combination of a work support, a

main feed dog, an auxiliary feed dog, means for raising and lowering said feed dog,

means for moving the main feed dog back 7 and forth, means for giving a differential movement to the auxiliary feed dog, a presser foot cooperating with said main feed dog, an auxiliary separating and pressing plate located wholly in front of the workengaging surface of the presser foot and cooperating with said auxiliary feed dog, a

bracket located at one side of the line of feed, a support carried by the bracket and projecting over the work support across the line of feed, means for attaching said separating and pressing plate to said support, a spring for normally pressing said separating plate against the work support, and means for raising said separating plate and holding the same raised, whereby the auxiliary feed dog may be rendered ineffective.

4. The combination of a work support, a main feed dog, an auxiliary feed dog, means for raising and lowering said feed dogs, means for moving the main feed dog back and forth, means for giving a differential feeding movement to said auxiliary feed dog, a presser foot cooperating with said main feed dog, a bracket attached to said work support at one side of the line of feed, a shaft mounted in said bracket and proj ecting over the work support across the line of feed, an arm fixed to said bracket, a presser plate attached to said arm and extending over said auxiliary feed dog, a depending arm carried by said bracket, and a spring cooperating with the depending arm for normally pressing the plate against the work support.

5. The combination of a work support, a main feed dog, an auxiliary feed dog, means for raising and lowering said feed dogs, means for moving the main feed dog back and forth, means for giving a difierential feeding movement to said auxiliary feed dog, a presser foot cooperating with said main feed dog, a bracket attached to said work support at one side of the line of feed, a shaft mounted in said bracket and projecting over the work support across the line of feed, an arm fixed to said bracket, a presser plate attached to said arm and extending over said auxiliary feed dog, a depending arm carried by said bracket, a spring cooperating with the depending arm for normally pressing the plate against the work support, a cam lever attached to the work support and adapted to engage said depending arm for raising said supporting plate, saidcam lever having means for holding the plate in raised position.

6. The combination of a work support, a needle and overedge stitching implements, a

cover plate for said overedge stitching implements, a main feed dog, means for operating the same, an auxiliary feed dog, means for giving said auxiliary feed dog differential feeding movements, a movable extension carried by said work support, and means mounted on said extension and cooperating with said. auxiliary feed dog for pressing the fabric against the work support.

7. The combination of a work support, a

needle and overedge stitching implements, a cover plate for said overedge stitching im plements, a main feed dog, means for operating the same, an auxiliary feed dog, means for giving said auxiliary feed dog differential feeding movements, a movable extension carried by said work support, a bracket carried by said extension, a support extending from said bracket overthe work support and across the line of feed, a separating plate fixed to said support and cooperating with said auxiliary feed dog, and means for yieldingly pressing said separating plate against the work support.

8. The combination of a work support, a needle and overedge stitching implements, a cover plate for said overedge stitching implements, a main feed dog, means for oper ating the same, an auxiliary feed dog, means for giving said auxiliary feed dog diflerential feeding movements, a movable extension carried by said work support, a bracket carried by said extension, a support extending from said bracket over the work support and across the line of feed, a separating plate fixed to said support and cooperating with said auxiliary feed dog, means for yieldingly pressing said separating plate against the work support, a cam lever mounted on said extension and adapted to, move said support for raising the separating plate from the auxiliary feed dog.

In testimony whereof I affix my signature in the presence of two witnesses.

LANSING ONDERDONK.

Witnesses RANDOLPH S. OSWALD, J. H. HOWELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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