US1840270A - Sewing machine - Google Patents

Description

- Jan. 5, 1932. R. BOLAND! SEWING MACHINE Filed July 8. 1927 6 Sheets-Sheet l INVENTOR hi, ATTORNEY Jan. 5, 1932. R. BOLANDI 1,840,270

SEWING MACHINE Filed July 8. 1927 6 Sheets-Sheet 2 v llllllllllllllllllllll Q I INVENTOR w A; ATTbRNEY Jan. 5, 1932. R. BOLANDI 1,340,270

SEWING MACHINE Filed July 8. 1927 6 Sheets-Sheet 5 INVENTOR 7? 1 13 1; ATTORNEY Jan. 5, 1932.

R. BOLANDI SEWING MACHINE Filed July 8, 1927 6 Sheets-Sheet 6 IIIIIIII/ INVENTOR @444 .ZMJ

4A1. ATTORNEY Patented Jan. 5, 1932 UNITED STATES PATENT OFFICE RAPHAEL BOLANDI, OF NEW YORK, N. Y., ASSIGNOR '10 J. LANDAUER, INCORPORATED,

OF NEW YORK, N. Y., A CORPORATION OF NEW YORK SEWING MACHINE Application filed July 8,

This invention relates to sewing machines, and aims to provide an improved machine for sewing beads to a fabric and a positive universal fabric feed for such a machine which may also be used on embroidering machines generally.

In the embroidering machines heretofore used it has been customary to support the fabric upon a fixed bed and to feed it in any desired direction by slipping it over the bed by means of a universal feeding member engaging the upper surface of the fabric. While this arrangement has proved satisfactory in embroidering machines where a small light piece of fabric is used, it is unsatisfactory in head sewing machines, since the feed member tends to roll on the beads without moving the fabric, and it is subject to similar objections in embroidering machines when a large or heavy piece of fabric is used.

The present invention provides a positive universal fabric feed by means of which the fabric is securely gripped between the upper and lower feed members and is moved by simultaneous movement of the upper and lower members while they are gripping it. This result is accomplished by combining with the universal upper feed member heretofore used on embroidering machines a universal lower feed member and providing a common control for the two feed members which synchronizes their movements.

In order that this and other features of the invention may clearly be understood, I will describe in detail a practical bead sewing machine embodying the invention. This machine possesses many of the features of the bead sewing machine shown in my previ- Patent No. 1,510,378, issued September 3-0, 1924, together with improvements on that machine, including the application thereto of a. positive universal fabric feed. It is shown in the accompanying drawings, in which Fig. 1 is a front elevation of the machine with the cover plate of its standard removed and part of the bed broken away; I

Fig. 2 is a left end elevation of the machine with parts broken away and sectioned on the axis of the needle sleeve;

Fig. 3 is a vertical longitudinal section of the left end part of the machine, sectioned on the line 3-3 of Fig. 2;

Fig. 4 is an enlarged fragmentary section taken on the same section plane as Fig. 3 and showing the cams actuating the lower feed member;

Fig. 5 is a fragmentary, horizontal section on the line 55 of Fig. 3, showing the lock for the bead carrier;

Fig. 6 is a fragmentary, vertical longitudinal section taken on the lines 6-6 of Figs. 2 and 13 showing part of the actuating mechanism of the upper feed member;

Fig. 7 is a bottom view of the machine;

Fig. 8 is a fragmentary plan view sectioned on the line 8-8 of Fig. 3, and showing the lower feed member;

Fig. 9 is a fragmentary, vertical transverse section taken on the lines 99 of F ig. 3 and Fig. 8, showing. part of the actuating mechanism of the lower feed member;

Fig. 10 is a fragmentary bottom view, sectioned on the line 10-10 of Fig. 9, and show ing one of the gears of this mechanism;

Fig. 11 is a fragmentary plan view, sectioned on the line 11-11 of Fig. 1, and showing the bead carrier;

Fig. 12 is a vertical, transverse section taken on the line 12-12 of Fig. 1 and showing part of the actuating mechanism of the upper feed member;

Fig. 13 is a vertical, transverse section taken on the line 13-13 of Fig. 3 and showing another part of this mechanism;

Fig. 14 is a fragmentary section taken on the line 1414: of Fig. 13 showing the mecha nism for controlling the length of the stroke of the upper feed member;

Fig. 15 is a fragmentary horizontal section taken on the line 15-15 of Fig. 2, showing part of the actuating mechanism of the upper feed member;

Fig. 16 (on sheet 1) is a fragmentary plan view of part of the base plate, showing the indicator of the length of the stroke of the lower feed member;

Fig. 17 is a par ial back elevation, partly sectioned on the axis of the needle, and showing the bead-carrier and bead-feeding mechanism and the fabric-engaging portions of the upper and lower feed members;

Fig. 18 is a similar view showing the beadfeeding mechanism sectioned on the feedscrew axis;

Fig. 19 is a detached elevation showing the bead-feeding mechanism looking in the direction of the arrow 19, in Fig. 17;

Fig. 20 is a similar view of the bead feeding mechanism with parts sectioned;

Figs. 21 and 22 are enlarged horizontal sections taken on the line 2121 of Fig. 19 and showing the bead conduit in operative, and

in open, position respectively;

Fig. 23 is an enlarged horizontal section on the line 23-23 of Fig. 19 showing the spring forclosing the bead conduit; and

Fig. 24. (on sheet 1) is a fragmentary front elevation showing in section the differential in the drive of the bead-carrying sleeve.

From Figs; 1, 2 and 3 of the drawings, it will be seen that the machine illustrated has the general characteristics of an ordinary embroidery machine. It is provided with a frame A, consisting of a base plate A1 and a hollow standard A2 of inverted L shape, having a head A8 at its outer end. In this head is carried the usual rotatable needle bar sleeve B within which is a hollow needle bar B1 having a needle B2 secured to its lower end. The needle bar is reciprocated by means of a slide B3 having a slot B4: engaged by the pin B5 of a cam B6 on the main driving shaft C of the machine. (See Fig. 12.) The machine is provided with the usual lock-stitchforming mechanism which includes, in addition to the needle and a tension device D, arotary bobbin E located below the baseplate A1. This bobbin is rotated at an irregular angular velocity as is customary, but the means for rotating the bobbin differ from the lever arrangement ordinarily used, and constitute a part of the present invention hereinafter described in detail.

The machine is provided with an upper feed member or ring F, which has a downward movement just as the needle is withdrawn from the fabric, a horizontal feeding movement while the needle is in raised posi tion, an upward movement as the needle enters the fabric, and a return horizontal movement while the needle is in the fabric.

The machine is provided with the usual mechanism for causing these movements of the feed ring, and for varying the direction of the feeding movement.

In order to make the feeding of the fabric positive, the machine is provided with a low- 61' feeding member G, and with mechanism for giving to the lower feeding member feeding and return movements corresponding in time, length, and direction with those of the upper feeding member F. This mechanism constitutes an important part of the invention, and is hereinafter described in detail.

While the parts of the machine thus far mentioned may be used as an embroidery machine, the machine illustrated includes also bead carrying and feeding mechanism H mounted on a sleeve H1 surrounding the needle sleeve B together with means for rotating this sleeve H1 and bead carrying and feeding mechanism about the needle bar sleeve, and for delaying or acceleratingsuch rotation in accordance with changes in the direction of the feeding of the fabric. The general arrangement and the operation of the bead carrying and feeding mechanism H is similar to that descibed in my Patent No. 1,510,378, but the construction of the bead feeding mechanism and the means for operating it embodies improvements over the corresponding parts shown in my former patent. Such improvements constitute a part of the present invention .and are hereinafter described in detail.

Bobbin (,Z/"Z:I)6.-Il'l. order to form a lock stitch in the usual manner, the bobbin E must turn very rapidly just as the needle B2 pierces the fabric. This is usually accomplished by a lever mechanism which turns the bobbin rapidly at the required time, and leaves it stationary at other times. In accordance with the present invention, the bobbin is given .a continuous rotation at continually changing angular velocity, so regulated that the bobbin has the necessary quick movement when the needle pierces the fabric. The mechanism by means of which this is accomplished in the machine shown in the drawings is best illustrated in Figs. 1, 3 and 7. r The bobbin E is secured on one end of a horizontal shaft El journalled in brackets E2, E3 attached to the bottom of the base plate A1 of the machine. This shaft is driven from the main shaft C through eccentric mitered gears E1, E5, E6, E7, two of which E5, E6 are mounted on the ends of a vertical shaft E8 located within the vertical part of the standard A2. The mitered gears are so positioned that just as the needle has pierced the fabric, the tooth at the end of the longest radius of the gear E4: on the shaft C engages the tooth at the end of the shortest radius of the gear E5, while, at the same time, the tooth at the end of the, longest radius of the gear E6 engages the tooth at theend of the shortest radius of the gear E7 on the shaft E1. Consequently at this moment both pairs of gears act as speed-increasing mechanism, giving the shaft E1 momentarily an angular velocity much greater than that of the driving shaft O, causing the necessary quick movementcf the bobbin E. The angular velocity of the sha t E1 is decreased during the remainder of each revolution,.but at no time is therean abrupt change in the angular velocity or a complete stopping of the shaft E1. It will be understood that the gears E4, E and E6, E7 are of the same size, so that the rapid movement of the shaft E1 occurs always at the same point-in the revolution of the shaft C. Besides making the machinerun more smoothly and less subject to wear than those with the lever bobbin drive heretofore used, the new arrangement facilitates uti izing the bobbin shaft E1 to A operate a lower universal feed member as F13 fixed on the hereinafter described.

Positive universal feerL-WVhile the upper universal feed member F and the mechanism for moving it are well known in the art, being described in Bonnaz Patent No. 83,910, is ued November 10, 1868 and Groebli Patent N 0. 1,073,344, issued September 16,1913, this mechanism will be briefly described in order to'explain the manner in which the mechanism operating the lower universal feed men ber G cooperates with it. The upper feed member or ring F is carried at the lower end of a bar F1, which is secured by means of a universal joint F2 to a spring-depressed slide F3 mounted on the head A3, and is given an upward movement when the needle enters the fabric by a bell crank lever F4 engaging a cam F5 on the main'shaft C. (Figs. 1, 2, 6, 12, 13.) The" lateral feeding and return movements of the ring Fare caused by the tilting of av small lever or pawl F6 pivoted on asleeve F7 fixed to the needle bar sleeve B, and having its upper end in engagement with a slotin ring F8 on an arm F9 extending inwardly from the upper end of the bar F1 and slidable on-the square upper end of the sleeve F7 (Figs. 2 and 15) against the force of return sn iug F8. (Fig. The lower end of the lever F6 engages a cam groove F10 in a nipple F11 slidably mounted on the needle bar sleeve B. (Fig. This nipple F11 is moved "up and down along the needle bar sleeve, in order to rock the lever F6, by a. spring-depressed slide F12 mounted on a pin head A3, and having an arm F15 carrying a fork F16 engaging a groove in the nipple F11. The reciprocation of the slide F12 is caused by a cam F17 on the main shaft C, which engages a cam follower F18 carried on an arm F19 of the slide F12. (Figs. 3, 12.) The extent of each lateral feeding movement ofthe ring F which determines the length of the stitch, is regulated. by limiting the stroke of the slide F12, by inserting a wedge-shaped stop F20 to a greater or less extent under the slide. (Fig. 13.) The position of this stop is controlled by a screw F21 and nut carrying a dial F22 which, by cooperation with a pointer F23, indicates the length of the stitch. (Figs. 1, 13, 14.) As is usual, the direction of the feeding movement of the ring F is controlled by turning the needle sleeve B, and consequently the sleeve F7. For this purpose, the needle sleeve'may be turned by means of a control handle F24 at the bottom of the machine.

the upper surface of the (Fig. 1.) The handle is connected with the needle bar sleeve through a bevel gear F25, meshing with a gear F26 on a short transverse shaft F27 (see Figs. 1, 2, 7) a bevel gear F28 on the shaft F 7 meshing wi h the gear F29 on a sleeve F30 loosely mounted on the bobbin shaft El; a bevel gear F31 on the sleeve F30 meshing with a bevel gear F32 on a vertical shaft F 33; a bevel gear F34 meshing with a bevel gear F35 on a horizontal shaft F36; and a bevel gear F3? on the shaft F36 meshing with a bevel gear F38 on the needle bar sleeve B. (Figs. 1, 2, 3, 7.) All the intermesh ng bevel gear" in this mecha nism have a 1:1 ratio, so that an angular movement of the handle F causes a movement of the needle bar sleeve through the same angle. The sleeve F7 set on the needle bar sleeve B in such a position that the feeding movement of the ring F is always in the direction in which the handle F24 is pointing.

The lower feed member G includes an annular head G1 mounted under the feed member F and tail piece G2 lying under the A1 of themachine. (Fig. 8.) The annular head G1 is set in a circular hole A4 in the base plate under the upper feed member F. It includes a thin disk G3 lying above base plate and. covering the hol A4, a toothed ring G4 on the disk G3, and a supporting ring G5 under the d '1 i3. (Fig. 3.) supporting ring G5 is mounted on ball bearings G6 for which a wide flat annular race A5 is provided in a cover plate A6 screwed to the bottom of the base plate A1 under the hole A (Figs. 3, 7 The form of the tail piece G2 of the lower feed member is best shown in Fig. 8. It extends from, and is preferably formed integral with, the supporting ring G5. It contains two spaced circular openings G7, G8, in which are rotatably mounted slotted disks G9, G10. The disks G9 and G10 contain rectangular slots G11, G12 engaging square guide blocks G 3, G14, which are socured to the base plate A1 in the manner hereinafter described. It is apparent from the examination of Fig. 8 that, when the guide blocks G13, G14, are in the position there shown, the lower feed member G may reciprocate in directions rallel to its tail piece. If the guide blocks are turned through the same angle, their engager with the slots G11, G12 will cause the disks G9, G10 to turn with them, thus changing the direction in which the feed member G may reciprocate.

The method of mounting and turning the guide'blocks will nextbe described. The guide block G14 is mounted on a screw G15 screwed into the bottom of the base plate A1. (Fig. On the lower end of the guide block G14 is formed a bevel gear G16 which meshes with the bevel gear G17 fixed on the sleeve F30, which may be turned by the G21 liiting in a hole A7 in the base gears G20,

handle'F24 through the bevel gears F28, F29, asalready described. The guide block G13 is in a square hole G19 in a gear G20,

ratio, so

-- G11 G12 are alwa s parallel to each other.

The parts are initially adjusted in such a :ianner that the sides of the guide blocks G13, G14 and consequently the slots G11, G12 are parallel to guiding sides F7 of the square part of the sleeve F7 on the needle bar sleeve B (Fig. 15), so that the direction in which the lower feed member G may reciprocate is the same as the direction of the horizontal reciprocation of the upper feed member F.

' Since a movement of the handle through.

any given angle causes the needle bar sleeve B and the guide blocks G13, G14 to turn tire i the same angle, the direction in which thelower feed member may reciprocate remains the same as the direction of horizontal reciprocation of theupper feed member in any position in which the handle may be turned, and is always parallel to the handle.

Reciprocatory movement of the lower feed member in the direction permitted by the guide blocks and the slots is caused by vertical-reciprocation of the guide block G13 which brings an inclined surface G24 on a cam G25 carried by t iis block against a similarly inclined surface G26 formed on the disk G9 at one end of the slot G11. (Fig. 4.)

he vertical reciprocation of the block G13 is caused by engagement of its lower surface G27 with an eccentric cam G28 splined on the bobbin shaft Fil. (Fig. As this shaft rotates continuously and makes one revolution for each revolution of the mainshaft C, and the cam G23 can be set so as to cause feed- 3 ing movements ()L 'b .e lower feed member G at the same time that similar feeding movements of the upper feed member F are caused by the cam F17 on the shaft C. In the vertical reciprocation of the block G13, the upward movements are caused b i the camG28 and the downward movements by a spring G29, while in the reciprocation of the feed member G, the feeding movements are caused by engagement of the cam surfaces G24 and G26, while the return mo ements are caused by springs G30 secured to the underside of the gear G20 and engaging a slot G31 in the disk G9. (Figs. 3, 4, 8, 10.)

In order to vary the length of the feeding 1 movementsof the lower feed member G to provide for changing the length of the stitch, the cam G28 is tapered longitudinally, and made longitudinally adjustable so that the part of it which contracts with, the lower surface G27 of the block G13 may be varied. Longitudinal adjustment of the cam G28 on the shaft E1, is efiected by an adjusting screw G32 rotatably mounted in a bracket G33, and having a threaded engagement with a slide G34 carrying a slotted arm G35 engaging a groove in the cam G28. (Figs. 7, 9.) The position in which the cam G28 has been placed by the adjusting screw G32 is shown by an indicating disk G36 connected with the adjusting screw by a gear and Worm G37. (Fig. 7, Fig. 16' on Sheet 1.) The graduations on the disk G36 indicate the length of the stroke of the lower feed member on the same scale as that used on the disk F22 to indicate the length of the stroke of the upper feed member F. (Figs. 1, 16.) Consequently, when the two disks are set at the same figure, the feeding movements of the upper and lower feed members correspond in length as well as inv time and direction. It is apparent from the above description that the mechanism which has been described provides a universal feed for the fabric which is positive as the fabric is firmly gripped between the correspondingly moved upper and lower feed members.

Bead sewing me0ham'sm.-A rotary sleeve H1 surrounds the lower part of the needle bar sleeve and is mounted in the head A3 by means of a ball bearing H2. (Fig. 3.) This sleeve supports a circular bead carrier H3, which is adapted to carry three spools on which are wound threads strung with beads. Under each spool is an outlet opening H4 for the beads, and the carrier H3 may be turned about the sleeve H1 to bring any one ofthese openings into alignment with the chute H5 of a bead feeding device H6, which is secured to the lower part of the sleeve H1. (Figs. 1, 11, 17.) To provide for positioning any one of the spools in the carrier to supply beads, the carrier is provided with a pin H7 adapted to fit into any one of three slots H8 in a collar H9 on the sleeve H1. (Figs. 3, 5.) The frame H10 of the bead-feeding device H6 carries a'feed screw H11, which is rotated through the engagement of a gear H12 on the feed screw shaft H13 with a stationary gear H14 fixed on the needle bar sleeve B just below the lower end of the sleeve H1. (Figs. 17-20.) The feed screw is surrounded by a conduit consisting of two separable parts. One part, H15, of the conduit is formed integral with the frame H10 of the feeding device, while the other part, H16, is slidably connected with the part H15, and normally closed against the part H15 by means of a spring H17. A hand wheel H18, rotatably mounted on the part H14, carries a cam H19 adapted to engageone edge of the part H16 when the handle is turned so as to separate the part H16 from the part H15 to permit inspection of the feed screw. (Figs. 1923.)

To facilitate passing the end of a beadcarrying thread drawn from one of the spools in the carrier H3 through the conduit 'H15, H16, the gear H12 is slidably mounted on the worm shaft H13 so that the gear H12 may be moved into and out of engagement with the stationary gear H14. For this purpose, the gear H12 is provided with a sleeve H30 slida ble on the shaft H13, but held against rotation on the shaft by a set screw H31 engaging a longitudinal slot H32 in the shaft H13, (Fig. 18.) A spring catch H33 in the shaft H13 serves by engagement with a hole H34 to hold the sleeve H30 when the sleeve is positioned, so that, the gear H12 meshes with the gear H14. (Fig. 18.) When the end of a bead-carrying thread is to be passed through the conduit H15, H16, the gear H12 is slid down out of mesh with the gear H14 so that it occupies the position shown in Fig. 20. The gear may then be rotated by hand to turn the feed screw, and thus carry the bead thread through the conduit by engagement with the beads until the thread and the beads emerge from the lower end of the conduit. Then, before the machine is placed in operation, the gear H12 is pushed up into its working position in engagement with the gear H14.

The sleeve H1 is rotated about the needle bar B normally at the rate of one revolution for each reciprocation of the needle bar, and means ,are provided for accelerating or decelerating its rotation when a change in direction of feed of the fabric is made by turning the handle F24. For this purpose, the sleeve H1 is driven from a main shaft C through a differential H20, whose cage H21 is connected with the handle F24 through a gear H22 fixed on an extension of the cage and a gear H23 fixed on the shaft F36 which is controlled by the handle. The driven part H24 of the differential is connected to the sleeve H1 through a sleeve H25 loosely mounted on the shaft F36. A gear H26 on the driven part H24 meshes with a gear H27 011 one end of the sleeve H25. At the other end of this sleeve is an annular bevel gear H28, which surrounds the bevel gear F37, and meshes with an annular bevel gear H29, fixed on the upper end of the sleeve H1, and surrounding the bevel gear F38 on the me dle bar sleeve B. (Figs. 1, 3, 23.)

The operation of the bead-feeding mechanism which has been described is the same as that described in my Patent No. 1,510,387, except that with the present mechanism a change in the type or color of the beads supplied may easily be made by merely rotating the holder H3 to bring another of'its spools over the chute H5, and then rotating the feed screw by hand to carry the end of the new bead-carrying thread through the conduit surrounding the feed screw. Other advantages of the present mechanism are that it permits ready access to the feed screw H11 to eliminate any beads which may be jammed or broken therein, and that it makes the machine more compact by nesting the bevel gears which turn the needle bar sleeve B within those which rotate the sleeve H1.

In previous bead sewing machines, the bead-carrying thread has had a tendency to catch under the presser foot of the machine, which has heretofore been formed as a nipple surrounding the needle. A feature of the present invention is to eliminate this difhcuh ty and to provide improved s iring means for the presser foot. The presser foot J is provided with a fabric-engaging finger J1 located at one side of the needle B2. The presser foot is carried by a sleeve J2 splined to the needle bar sleeve B, so that itturns when the needle bar sleeve is turned, but may slide on that sleeve. The sleeve J2 is normally pressed down so as to hold the finger J1 against the fabric, by means of compression spring J3 located in a cavity formed within the sleeve H1. The presser foot J is raised to take the finger J1 out of engagement with the fabric when the needle B2 is Withdrawn from the fabric and the feeding of the fabric is to take place. The raising of the presser foot is caused by the engagement of a shoulder B3 at the lower end of the needle bar B1 with the lower end of the sleeve J2. The presser foot J is so attached to the sleve J2, which is splined to the needle bar sleeve, that the finger J1 of the presser foot is always directly in advance of the needle. This finger, therefore, holds the fabric as effectively as the usual presser foot which has the form of a nipple, while, at the same time, it in no way interferes with the winding of the bead-carrying thread about the needle and sewing thread. Furthermore, the presser foot spring is enclosed and out of the way.

What I claim is:

1. In a sewing machine having a reciprocatory needle above the fabric, a rotary bobbin below the fabric, and a shaft on which the bobbin is mounted, the combination with an upper universal feed member, of a lower feed member, and positive moving means actuated by the bobbin shaft for causing horizontal movements of the lower feed member simultaneously with the feeding movements of the upper feed member, and means for changing the direction of operation of said moving means when the direction of the feeding movement of the upper feed member is changed.

2. In a sewing machine having a reciprocatory needle above the fabric, a main driving shaft actuating said needle, a rotary bobbin below the fabric, and a shaft on which said bobbin is mounted, the combination. with an upper feed member actuated by the main shaft, of a gear connection between the main shaft and the bobbin shaft causing continuous rotation of the bobbin shaft, a lower feed member, and means actuated by the bobbin shaft for causing feeding movements of the lower feed member simultaneous with those of the upper feed member.

' 3. In a lock stitch sewing machine having a reciprocatory needle above the fabric, a main driving shaft actuating the needle, a bobbin below the fabric, and a shaft on which 7 the bobbin is mounted, the combination with an upper feed meml er actuated by the main shaft of eccentric gears connecting the main shaft with the bobbin shaft so as to cause continuous rotation of the bobbin shaft at an irre 'ular ang velocity, a lower feed member, a cam on as bobbin shaft, and moving means for the lower feed member actuated by the said cam, the cam being so positioned on the bobbin shaftthat movements of the lower feed member synchronize with those of the upper feed member.

4. In a sewing machine, a feed member, two diametrically slotted disks pivoted to said feed member, two parallel guide blocks, one in the slot of each disk, and means for simultaneously turning said guide blocks through the same angle so as to retain said slits parallel to each other.

5. In a sewing machine, a feed member, two diametrically slotted disks pivoted to said feed member, two rotatably mounted gears, two parallel guide-blocks, carried by said gears respectively and engaging the slots of said disks respectively, a control shaft, and two gears on said control shaft meshing respectively with the aforesaid two gears, the gear ratio of the two pairs of meshing gears being the same so that turning of the control shaft causes the guide blocks to turn through equal angles.

6. In a sewing machine, a feed member, two diametrically slotted disks pivoted to said feed member, one of said disks having an inclined cam surface at one end of its slot, two gears, a guide block slidably mounted on one of said gears and located in the slot of the disk which has the cam surface, a cam on said block engaging the cam surface of said disk, a second guide block parallel to said first-guide block, fixed on the second gear, and located in the slot'of the other disk, a control shaft, two gears on said control shaft meshing respectively with the aforesaid gears, and means independent of said gears for reciprocating the cam-carrying guide block to cause reciprocation of the feed member. 7 p i 7. In a sewing machine, a feed memben'a horizontal slotted disk pivoted to said feed member and having an inclined cam surface at one end of its slot, a turnable guide block located in the slot in said disk, a cam on said guide block engaging the cam surface on said guide block engaging the cam surface of the disk, a spring urging said cam surface toward said cam, a rotary shaft located under said guide block, a cam on said shaft engaging the lower surface of the guide block to cause vertical reciprocation thereof, and a spring urging the guide block toward said cam.

8, in which the cam on the rotary shaft is longitudinally tapered, and means are provided for adjusting it along the shaft for varying the length of the vertical stroke of the cam block and consequently of the hori- M zontal stroke of the feed member.

In testimony whereof I have hereunto set my hand. I RAPHAEL BOLANDI.

9. Moving mechanism as claimed in claim

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