US892372A - Hemstitch-machine. - Google Patents

Description

No. 892,372. PATENTED JUNE 30, 1908.

M. GOULD. HEMSTITGH MACHINE.

APPLICATION FILED OOT. 5,1906.

4 SHEETSSHEET 1.

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INVENTOIKL No. 892,372. PATENTED JUNE 30, 1908.

M. GOULD.

HEMSTITGH MACHINE.

APPLICATION FILED OOT. 5,1906.

,4 SHEETS-SHEET 2.

If j g WFiesses. I v ENTO a m g No. 892,372. PATBNTED JUNE so, 1908.

M. GOULD.

HEMSTITGH MACHINE.

APPLICATION FILED 0015,1906.

4 SHEETS-SHEET 3.

PATBNTED JUNE 30, 1908.

M. GOULD. HEMSTITGH MACHINE. APPLICATION 11.12 00'l.5,1906.

4 SHEETS-SHEET 4.

Smnwfoz Wit" mow UNITED STATES PATENT OFFICE.

MATTHEW GOULD, OF BELFAST, IRELAND, ASSIGNOR TO CHARLES MCOLOSKEY AND HENRY MCCLOSKEY, OF BELFAST, IRELAND, TRADING AS CHARLES MCCLOSKEY &

COMPANY.

HEM STITCH-MACHINE Specification of Letters Patent.

Patented June 30, 1908.

Application filed. October 5, 1906. Serial No. 337,558.

subject of the King of Great Britain, residing quadrant j which at 64 Christopher street, Belfast, Ireland, have invented certain new and useful Improvements in Hemstitch-Machines, of which the following is a specification.

This invention relates to sewing machines of the class in which the needles are caused to vibrate or move laterally.

The object of my invention is to so make such machines that two (or more) parallel and adjacent rows of special ornamental stitching can be made on fabrics.

The special stitching produced by means of my invention I term double hemstitch.

Under my invention there are two needles arranged side by side, or one may be a short distance behind the other, and secured in needle blocks on the lower end of the needle bar, said blocks being vibrated bymeans of connecting arms and rods jointed to a vibrating quadrant or quadrants said quadrant or quadrants being operated by means of a special cam. The special cam and the feed mechanism are so arranged as to give a special movement to the needles and the cloth, the combined movements producing the double hemstitch stitch.

In order that my said invention may be clearly understood 1 have hereunto appended an explanatory sheet of drawings, whereon,

Figure 1 is a side elevation of an ordinary Wheeler & iVilson spoke stitch or hemstitch sewing machine with my invention applied thereto. Fig. 2 is a diagram showing the stitching. Fig. 3 is a view of the special cam. Fig. 4 is a view of a sewing machine with a double quadrant movement. Fig. 5 is a plan of part of Fig. 4. Fig. 6 is a detail of the feed mechanism. Fig. 7 is a face view of the stitch or feed cam. Fig. 8 is a view of the feed raising and drop cam. Fig. 9 is an enlarged detail in elevation showing the arrangement of the punches. Fig. 10 shows in diagram the disposition of the needles and punches. Fig. 11 is a detail of the feed mechanism.

Referring to the drawings :-The machine a has vibrating needles I), c, secured in needle blocks d, e, fitted pivotally in such manner on a cross barf at the lower end of the needle bar g that one of the needles is slightly behind the other.

The needles are vibrated by ordinary conneedles again rise GOULD, a rods i, i adjustably nections such as arms h, h, and connecting fitted to the ordinary latter is vibrated about its pivot k by means of a special form of cam 0 which is shown enlarged at Fig. 3.

i/Vhen the needles are in line with each other they are in what I may call their in position and when they are moved laterally away from each other to their greatest extent they are in what I may term their out po' sition.

The special cam 0 and the feed mechanism are arranged to give' the following movements :Both needles descend and enter the cloth Z simultaneously in their in position at 1, 1, and then open or move apart in the cloth and, when they rise again, the cloth is given a backward movement and at the next descent of the needles they are in their out position and enter the cloth at 2, 2. When they rise again the cloth is moved forward and the needles thereafter descend in their out position and enter the clothat 3, 3. At the next descent of the needles the cloth is given a backward movement and the needles in their in position enter the cloth at 4, 4, thus completing the movement. The corre sponding positions are marked on the cam 0, 1, 2, 3, 4. The motions are repeated as often as desired to produce the required stitching.

When there are two quadrants such as shown at m, a, Fig. 4 then the connecting rods t, i may be arranged as shown. The quadrant m is fulcrumed at m and the quadrant a at a, and the fulcrum pins are extended through bearings as shown at Fig. 5 and connected together by arms p, p which latter are jointed together at 19 so that when the quadrant m (which is alone operated by the cam) is moved in one direction the quadrant a is moved in the opposite direction. The special cam for operating the quadrants is the same as before. In this case the movements of the needles are the same and the stitch is also the same as before.

then the needles are arranged side by side and close together then the arrangement is such that they enter the cloth simultaneously and when they rise again the cloth is given a backward movement, the needles then open out and again enter the cloth. Vhen the needles rise again the cloth is moved forward and then the needles, still apart, again enter the cloth. hen the the cloth is given a further backward movement and when the needles again descend they enterthe cloth close together. When the needles rise again the cloth is moved forward and so on. These 5 movements are repeated as often as desired to produce the stitching.

The above movements of the needles are effected by means of the special cam which has suitable rojections for the purpose. It will be seen om Fig. 3 that the cam has a groove 0 in which the in of the quadrant y' or m works. I/Vhen the needles enter the cloth the first time the pin is at 1, when they enter the cloth the second time the pin is at 2, when they enter the cloth the third time it is at 3 and when they enter the cloth the fourth time the pin is at 4 and so on, the movements being repeated. The dotted lines, Fig. 2, indicate the movements of the needles.

The cam g is a cam such as used in other machines ofthis class and is illustrated in face view at Fig. 8. 'This cam causes the feed bar to rise and fall at the proper times by means of the connections a", 00 and rocking shaft 00 see Fig. 11. The cam t trans? mits a translational movement to the feed bar 4) through the quadrant ac, rod 1 and rocking shaft :0 see Figs. 6 and 11.

When the needles I), 0, enter the cloth at 1 (Fig. 2') the pin in quadrant j isin position 1 in the cam groove 0 (Fig. 3). On the needles and punches ascending and leaving the cloth, the'latter is fed backward due to the action of the roller in groove t passing over the operative part 1 of the cam t. The needles and punches now descend and enter the cloth at 2, the pin in the quadrant y' being at the osition 2 in the cam groove 0 On the nee les and punches leaving the cloth, the latter is fed forward due to the action of the part 2 of the cam t on the operating roller therein and through the connections with the same to the feed bar. The needles and punches again descend and enter the cloth at 3, the pin in the quadrant 7' being in position 3 in the cam groove 0 On the needles and punches rising and leaving the cloth the latter is fed backward owingto the action of the feed bar through its connections to the cam 25, the operating roller in the latter being now in position 3 (Fig. 7). The needles now descend and enter the cloth at point 4, the pin on the quadrant j being at position 4. On the needles and punches rising and leaving the cloth the latter is fed forward due to the action of the part 4 of the cam tthrough the connections x, 00 3 and the rocking shaft 20 on the feed bar. The same action is now re peated over and over again.

In openwork stitching, punches are employed and these punches are, or may be, arranged in conjunction with-the needles so as to make the openings in the cloth at the proper 65 positions. There may be one, two, or three unches as desired and these punches maybe tted to the needle bar or to a special punch bar.

Of course the mechanism employed to produce the stitch may be altered or varied according to the type of machine used and the fabric on which the stitching is to be made.

Having now fully described my invention what I claim and desire to secure by Letters Patent is 1. A sewing machine having two needles arranged on the needle bar, one behind the other and in the line of feed, means for operating the needle bar, means for moving the needles laterally, means for feeding the cloth and means for causing the needles to first enter the cloth in line with one another then to move the cloth backward and the needles laterally so that they enter the cloth for the second time out of line with one another, then for moving the cloth forward and again causing the needles to enter the cloth when out of line with one another then for moving the cloth backward and causing the needles to enter the cloth in line with one another.

2. A sewing machine having two needles arranged one behind the other on the needle bar, and in line of feed, means for operating the needle bar, means for causing the needles during the formation of the stitch to first enter the cloth in line with one another, then out of line with one another, again out of line with one another and finally in line with one another again and means for causing the cloth to move alternately backward and forward during these movements of the needles.

3. In a sewing machine, two needles mounted one behind the other in the line of feed on a needle bar, means for reciprocating the needle bar, means for shifting the needles laterally, feeding mechanism for moving the' fabric back and forth under the needles, the various elements being so timed in operation that the needles enter the goods in proximity to each other, are moved laterally in a direction transversely to the feed and away from each other during a backward movement of the feeding mechanism, are reciprocated twice in line with and during a forward movement of the feeding mechanism and are finally moved laterally to their first position into proximity during a backward movement of the feeding mechanism.

4. In a sewing machine, two needles arranged one behind the other in the line of feed on a needle bar, means for operating the needle bar, a cam for moving the needles laterally, feeding mechanism for moving the fabric back and forth under the needles, the various elements being so timed in operation that the needles enter the goods in proximity to each other, are moved laterally in a direction transversely to the feed and away from each other during a backward movement of the feeding mechanism, are reciprocated twice in line with and during a forward movement of the feeding mechanism and are finally moved laterally to their first osition into proximity during a backwar movement of the feeding mechanism.

5. In a sewing machine, two needles mounted one behind the other in the line of feed on a needle bar, means for reciprocating the needle bar, means for shifting the needles laterally, feeding mechanism for moving the fabric back and forth under the needles, the various elements being so timed in operation that the needles first enter the cloth in line with one another, then move laterally apart from one another while in the cloth, then rise and enter the cloth again when laterally apart from one another, then rise again and thereafter again enter the cloth while later-,

ally apart from one another, and then to move inwards and again enter the cloth in line with one another.

6. In a sewing machine, two needles mounted one behind the other in the line of feed on a needle bar, means for reciprocating.

the needle bar, means for shifting the needles laterally, feeding mechanism for moving the fabric back and forth under the needles, the various elements being so timed in operation that the needles first enter the cloth in line with one another, then move laterally apart in the cloth, and, when they rise again, the cloth is given a backward movement, and thereafter the needles are caused to again enter the cloth while laterally apart from one another and when they rise again the cloth is moved forward and the needles caused to again enter it when laterally apart from one another, then the cloth is moved backward and the needles caused to again enter the cloth in line with one another, substantially as described.

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

MATTHEl/V GOULD.

WVitnesses CHAS. McCLos KEY, WILLIAM SMILEY.

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