US1087489A - Sewing-machine. - Google Patents

Description

J. H. HAGAN.

SEWING MACHINE.

APPLICATION FILED MAR. 5, 1913. 1,087,489, Patented Feb. 17, 1914.

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SEWING MACHINE.

APPLICATION PI-LHD MAR. 5, 191a.

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SEWING MACHINE.

APPLIUATION FILED MAR. 5, 1913' 1,087,489., 4 Patented Feb. 17, 1914.

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COLUMBlA PLANOGRAPH (IO-,WASHINDTON. D. c.

UNITED STATES PATENT OFFICE.

JAMES H. HAGAN, 0F GLOVERSVILLE, NEW YORK.

SEWING-MACHINE.

To all whom it may concern Be it known that 1, JAMES H. HAGAN, a citizen of the United States, residing at Gloversville, in the county of Fulton and State of New York, have invented certain new and useful Improvements inv Sewing Machines, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to improvements in sewing machines and more particularly to machines of that type employed in producing the diverging lines of ornamental stitching such as are commonly provided upon glove-backs and similar articles.

The present invention has for its primary object the provision of simple and effective mechanism whereby the two outerlines of stitching will have the same degree of divergence with relation to the central line of stitching, and which will also insure an equal length of the lines or rows of stitching, produced upon each operation of the machine.

Another and more specific object of the in vention is to provide in a machine of the above character tapering bars having spurred or roughened edges by which the material is held, as itis fed through the machine, and improved means for mounting said bars, whereby they may be easily and quickly interchanged and others substituted therefor, as the size of the glove or the particular circumstances may require.

Another object of the invention is to provide in a sewing machine of the type referred to, improved mechanism whereby the work may be accurately and expeditiously performed said mechanism being capable of manufacture at comparatively small cost and adaptable to such machines now in commen use without necessitating any material alterations in their construction.

With the above and other objects in view as will become apparent as the description proceeds, the invention consists in certain constructions, combinations and arrange ments of the parts that I shall hereinafter fully describe and claim.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which Figure l is a side elevation of a sewing machine illustrating the preferred embodiment of the present invention; Fig. 2 is a Specification of Letters Patent.

Application filed March 5, 1913.

Serial No. 752,157.

plan view of the bed upon which the material is fed beneath the presser foot illustratmg the mounting of the tapering blades. Fig. 3 is a longitudinal section taken on the line 3-3 of Fig. 2; Fig. 4 is a transverse section taken on the line 4-4 of Fig. 1; Fig. 5 is an enlarged fragmentary elevation showing the position of the thread pulling fingers with the threads in position to be cut; Fig. 6 is a detail perspective view of one of the diverging blades. Fig. 7 is a plan view of the presser foot; and Fig. 8 is a detail perspective view of the finger bar.

Referring in detail to the drawings, 5 designates the bed plate of a sewing machine, said machine being provided with theusual head 6 in which the vertically reciprocating needle bar 7 operates, any ordinary or approved mechanism being provided for the actuation of said needle bar.

Upon the bed plate 5, the spaced parallel guide bars 8 are transversely arranged and provided with attaching flanges 9 whereby they may be bolted or otherwise rigidly secured upon the bed plate. The sewingmachine is also provided with the usual presser foot 10 which is fixed upon the lower end of a vertically movable rod 11 mounted in the head 6. This presser foot is adapted to be raised and lowered and when in its lowered position is disposed betweenthe opposed edges of the guide bars 8. The presser foot 10 is provided in its body portion with spaced parallel slots 12, for a purpose which will more fully appear from the following description.

Between the guide bars 8, the sliding cross heads 13 are mounted, the ends of said heads being notched as indicated at 14L to receive the opposed edges of the bars 8. Upon these sliding cross heads 13 the lon gitudinally disposed blades 15 are mounted. These blades, as shown in detail in Fig. 6,

gradually taper from one of their ends to the other, and are provided at their narrow ends with the longitudinal extensions 16 Patented Feb. 17, 1914.

which terminate in the notched lugs 17. The

notches 18 in these lugs receive the upper edge of one of the sliding cross heads 13.

The blades 15 at their wider ends are also provided in their upper edges with notches 19 to receive the lower edgesof their cross heads 13. The guide bars 8 are connected at their opposite ends by means of the stop plates 20 which limit the longitudinal movement of the heads 13 and the blades 15 carried thereby. It will be notedfrom reference to Fig. 3 that the lower edges of the blades 15 are disposed in parallel relation to the uide bars 8 while their upper edges are ongitudinally inclined. These inclined edges of the blades are provided with short teeth or spurs 21 for gripping engagement with the material. The upper edges of the blades may be knurled or otherwise roughened for engagement with finer materials.

Upon the stop plates 20 at the forward ends of the guide bars 8, a longitudinally disposed finger or presser bar 22 is pivotally mounted as indicated at 23. This presser bar tapers longitudinally and extends toward the presser foot, said bar being located directly above and between the spaced blades 15. This bar is normally held in an elevated position by means of a leaf spring 2 1 one end of which is fixed to the plate 20, the other end of said spring bearin against the lower edge of the finger 22. The finger 22 is further provided with a depending pin 25 the function of which will belater referred to.

The body oft-he presser foot 10 is provided adjacent the outer edges of the slots 12 and between said slots with the needle receiving openings 26 through which the needles 27 secured in any preferred manner in the needle bar 7 are extended in the downward stroke of the needle bar. The side walls of the slots 12 in the presSer foot are preferably beveled or inclined in op posite directions as clearly shown in Fig. 4:, so that they will exert a downward pull upon the'material as it is fed through said slots by the blades 15.

As thus far described, the operation of the invention is as follows: After the material has been properly cut, the central finger extensions are disposed upon opposite sides of the pin 25 on the finger bar 22 and said pin engaged with the crotch at the inner ends of said finger extensions. The presser foot 10 being elevated, the material is passed under the same and engaged with the upper spurred edges of the blades 15. As the machine is operated, the heads 13 are moved longitudinally upon the guide bars 8, the upwardly inclined edges of the blades 15 passing through the slots 12 in the presser foot. As the wider ends of these blades move through the slots 12, the material is of course drawn upwardly through the presser foot, thereby pulling upon the same and causing the rows of stitches formed by the needles 27 to diverge, said stitching lines or rows of course, being comparatively close together at the start of the operation, and the two outer rows gradually diverging from the central row to a point adjacent the finger extensions, at the completion of the operation. By simply exerting a downward pressure upon the finger bar 22, the material is stretched into proper form over the upper edges of the blades 15 and is held in such form by the presser foot during the stitching operation. The finger bar 22 is forced downwardly by the operator until its lower end is in parallelism with the bed plate of the machine. Pressure upon this bar is then released so that the same will immediately return to its normal position.

In addition to the foregoing, I have devised improved means whereby the threads may be easily and quickly cut at the completion of each stitching operation. To this end, I secure to the upper end of the foot block, the bearing members 28 in which a transversely disposed shaft 29 is mounted. ()ne end of this shaft is provided with a knurled head 30 whereby the same may be readily rotated or oscillated in its bearings. Upon this shaft, a plurality of arms 31 are fixed at one of their ends, said arms corresponding in number to the number of sewing needles. Upon one side of each of the arms 31, a bar 33 is secured by means of the screws 34. These bars project be yond the ends of the arms and are provided in their extremities with notches, which, in the normal positions of said bars are dis posed in juxtaposition to the eyes of the respective needles. Upon the opposite end of the shaft 29, a suitable weight 36 is secured which is disposed upon one side of the axis of the shaft and normally holds the bars 33 in the position shown in Fig. 1. lVhen it is desired to pull the threads from under the points of the needles so that the same can be readily cut, the operator rotates the shaft 29, and swings the arms 31 and the bars 83 carried thereby to the position shown in Fig. 5. In this movement of the bars, the threads are received in the notches 35 of the bars and moved upwardly. By the movement of the shaft 29, the weight 36 is swung upon the opposite side thereof so that said weight will hold the notched ends of the bars 33 in their elevated positions. The threads may thus be readily cut. Owing to the fact that at the completion of the sewing operation, the wider ends of the blades 15 are between the needles, considerable time would be consumed and difliculty experienced in picking out the threads and separately cutting the same so that the work could be removed By providing the device above described, the threads may be very easily and quickly cut and waste of the thread prevented while sufiicientthread will remain in the point of the needles for the start of the next sewing operation. The weight 36 will at all times hold the lower ends of the rods 33 out of contact with the needles while the machine is in operation.

From the foregoing, it is believed that the construction and manner of operation of my improved sewing machine will be clearly and fully understood. The invention provides simple and eflicient mechanism for sewing diverging lines of stitching upon glove-backs and admits of such work being quickly and accurately performed with comparatively little labor upon the part of the operator. The blades 15 may be easily and quickly removed and others substituted therefor when it is desired to operate upon different kinds of material or to vary the degree of divergence between the rows of stitching. Owing to the comparatively simple construction of the invention, it will also be obvious that the same can be roduced at small manufacturing cost and is highly durable and efficient in operation.

While I have shown and described the preferred construction and arrangement of the several elements, it will be understood that the invention is susceptible of considerable modification in the form, proportion and arrangement of the several parts without de arting from the essential features or sacri 'cing any of the advantages thereof.

7 Having thus described the invention, what is claimed is:

1. In a sewing machine, a presser foot provided with spaced longitudinal slots, and slidably mounted blades movable through said slots and having longitudinally inclined spurred upper edges.

2. I11 a sewing machine, a presser foot provided with spaced longitudinal slots, spaced feeding blades slidably mounted for movement through the slots in the presser foot, and a relatively stationary element to force the material downwardly between said blades.

3. In a sewing machine, a presser foot provided with spaced longitudinal slots, spaced feeding blades slidably mounted for movement through the slots in the presser foot, and a pivotally mounted finger to force the material downwardly between said blades.

l. In a sewing machine, a presser foot provided with spaced longitudinal slots, spaced feeding blades slidably mounted for movement through the slots in the presser foot, and a tapering finger pivotally mounted at one end to force the material downwardly between said blades.

5. In a sewing machine, a presser foot provided with spaced lon itudinal slots, spaced feeding blades slidab y mounted for movement through the slots in the presser a foot, a longitudinally extending tapering finger pivotally mounted at its wider end to force the material downwardly between the blades, and a spring acting upon said finger to yieldingly hold the same out of contact with the material.

6. In a sewing machine, a presser foot provided with spaced longitudinal slots, spaced feeding blades slidably mounted for movement through the slots in the presser foot, a longitudinally extending tapering finger pivotally mounted at its wider end to force the material downwardly between the blades, and means carried by the finger for engagement by the material whereby the same may be properly positioned be-' neath the presser foot.

7. In a sewing machine, a presser foot provided with spaced longitudinal slots, spaced feeding blades slidably mounted for movement through the slots in the presser foot, a longitudinally extending tapering finger pivotally mounted at its wider end to force the material downwardly between the blades, and a pin carried by said finger to limit its downward movement and for engagement by the material to properly position the same beneath the presser foot.

8. In a sewing machine, a presser foot provided with spaced longitudinal slots,

ends removably engaged upon said cross heads.

10. In a sewing machine, parallel guide bars mounted upon the bed plate of the machine, cross heads arranged between said bars and longitudinally slidable thereon, a presser foot operating between the guide bars and provided with spaced longitudinal slots, material feeding blades having inclined upper edges movable through said slots in the presser foot, the ends of said blades being notched for removable engagement upon the cross heads, and stops at the opposite ends of the guide bars to limit the sliding movement of the cross heads.

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

J ANEES H. HAGAN. Witnesses:

HENRY CASE, O'rro ROMAGNA.

Gopiu of thll patent may be obtained for five cents each,-by addressing the Gommiuioner of'latentl, Washington, D. O."

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