US2862468A

US2862468A - Ornamental stitch sewing machines

Info

Publication number: US2862468A
Application number: US471766A
Authority: US
Inventors: Ralph E Johnson
Original assignee: Singer Co
Current assignee: Singer Co
Priority date: 1954-11-29
Filing date: 1954-11-29
Publication date: 1958-12-02
Anticipated expiration: 1975-12-02
Also published as: ES225256A1

Description

Dec. 2, 1958 R. E. JOHNSON 2,862,463

ORNAMENTAL ST-ITCH SEWING MACHINES Filed Nov. 29, 1954 15 Sheets-Sheet 1 VENTOR.

Ralph E. Jqhnson WITNESS BY 7 ZW DZ 'O b 2 ATTORNEY Dec. 2, 1958 v I R. E. JOHNSON I 2,862,458

I ORNAMENTAL STITCH SEWING MACHINES ,Filed Nov. 29, 1954 l5 Sheets-Sheet 2 Fig. 2.

uvmvrozg Ralph E. Johnson WITNESS q L Ma y 5 ATTORNEY Dec. 2, 1958 R. E. JOHNSON ORNAMENTAL STITCH SEWING MACHINES 15 Sheets-Sheet 3 Filed Nov. 29, 1954 'INVENTQR. Ralph E Johnson ATTORNEY WITNESS R. E. JOHNSON QRNAMENTA'L STITCH szwmc; MACHINES Dec. 2, 1958 15 Sheets-Sheet 4 Filed Nov. 29, 1954 WITNESS ATTORNEY R. E. JOHNSON ORNAMENTAL STITCH SEWING MACHINES Dec. 2, 1.95s

15 Sheets-Sheet 5 Filed NOV. 29, 1954 INVENTOR. Ralph E. Johnson WITNESS ATTORNEY kDec. 2, 1958 R. E. JOHNSON ORNAMENTAL STITCH szwmc; MACHINES l5 Sheets-Sheet 6 Filed Nov. 29, 1954 INVENTOR. Ralph E. Johnson WITNESS ATTORNE Y Dec. 2, 1958 R. E. JOHNSON 2,862,468

Filed Nov. 29, 1954 ORNAMENTAL STITCH SEWING MACHINES 15 Sheets-Sheet 7 lo I 10,

WITNESS mmv ozp Ralph E. Jbhnson ATTORNEY Dec. 2,1958 R. E. JOHNSON ORNAMENTAL STITCH SEWING MACHINES 15 Sheets-Sheet 8 Filed Nov. 29, 1954 hn I I l i l I I l llTll .wW HW VMZZ VI/Z/ mmvro. .Ralph E. John spn WITNESS ATTORNEY Dec. 2, 1958 R. E. JOHNSON ORNAMENTAL STITCH SEWING MACHINES 15 Sheets-Sheet 9 E x in INVENTOR. Ralph E. Johnson Filed Nov. 29, 1954 WITNESS A-TTORNE Y Dec. 2, 1958 R. E. JOHNSON 2,362,453

ORNAMENTAL STITCH SEWING MACHINES Filed Nov. 29, 1954 15 Sheets-Sheet '10 Ralph E. Johnson Fig. 29. BY

f g/law 7/w Mmbw ATTORNEY WITNESS Dec. 2, 1958 R. EL JOHNSON 2,862,453

ORNAMENTAL STITCH SEWING MACHINES Filed Nov. 29, 1954 15 Sheets-Sheet 11 lllf 6 ATTORNEY Dec. 2, 1958 R. 'E. JOHNSON 2,862,468

ORNAMENTAL s'mcn SEWING MACHINES Filed Nov. 29, 1954 15 Sheets-Sheet l2 INVENTOR.

Ralph E. Johnson WITNESS ATTORNEY Dec. 2, 1958 R. E. JOHNSON 2,852,458

ORNAMENTAL swncn SEWING MACHINES Filed Nov. 29, 1954 15 Sheets-Sheet 1s Strai ht Stitching Left Center Right -To vary any stitch pattern below set the red lever to a position other than 3.

ll ll ll II II II I! ll To decrease width of any stitch pattern below set the red lever to a position other than 5.

A BAB WWW '2 mm um MM 0120 W W 010- MM oar-o W 0120:: M 01211 m two mm W Mr. we

m 0:23: W ovum WOIUI M 01mm WWW 010- WUIZUJ WWW 1p m QIF'I W oil-m 3 imit, W worn INVENTOR Ralph E. Johnson WlTNgS S Flg 49 BY MJQ QL .A ORNEY Dec. 2, 1958 R. E. JOHNSON ORNAMENTAL STITCH SEWING MACHINES 15 Sheets-Sheet 14 Filed Nov. 29, 1954 JNVENTOR, Ralph E. Johnson ATTORNEY WITNESS wfl b Dec. 2,1958 R. E. JOHNSON 2,862,468

ORNAMENTAL STITCH SEWING MACHINES Filed Nov. 29, 1954 A 1 15 Sheets-Sheet 15 see as! Hg. 60.

Fig. 62 I so 395--'-" 5 ,aes

' INVENTOR 1" Ralph E. Johnson WITNESS BY United States Patent ORNAMENTAL STITCH SEWING 'MACHINES Ralph E. Johnson, Mountainside, N. 1., assignor to The Singer Manufacturing Company, Elizabeth, N. J., a corporation of New Jersey Application November '29, 1954, Serial N0. 47 1,766 27 Claims. .(Cl. 112-158 This invention relates to improvements in ornamental stitch sewing machines and has for an object to provide such a machine with novel mechanism whereby the machine can be made to produce a large number of ornamental designs without any change in the construction of the machine.

A more'specific object of the present invention is to provide a zigzag stitch type ornamental stitch sewing machine with a plurality of different response-producing records for controlling the actions of the zigzag stitch mechanism and means whereby such recordsmay be selectively employed in different combinations for effecting various patterns of ornamental stitches.

Another object of the present invention is to provide a sewing machine with a novel stitch forming mechanism including rotary loop-taker and reciprocatory needlebar mechanisms which cooperate together;in the formation of lock stitches.

'Another object of the present invention is to provide a sewing machine with a novel and meritorious presserbar mechanism for effectively maintaining the work ;material in proper relation with the work-supporting bed of a sewing machine.

A further object of the invention is to provide a sewing machine with novel means for rendering the workfeeding mechanism ineffective at the will of .the operator.

Yet another object of the present invention is toprovide a sewing machine with novel means for clamping either one .or a pair of needles to a reciprocatory needlebar mechanism.

With the above and other objects in view, the invention comprises the devices, combinations andarrangements of parts hereinafter described .in connection with the accompanying drawings which illustrate a preferred embodiment of the invention from which the several features of the invention and the advantages attained thereby will be readily understood by those skilled in the art.

In the drawings,

Fig. 1 represents a front perspective view of a sewing machine in which the present invention is embodied.

Fig. 2 represents a side elevational view in axial cross-section of the sewing machine illustrated in Fig. 1.

Fig. 3 represents a top plan view of the sewing machine disclosed in Fig. l with the cover plate removed therefrom.

Fig. 4 represents a fragmentary elevational view of the actuating drive for the needle-bar.

Fig. 5 represents a sectional view taken substantially along the line 55 of Fig. 2.

Fig. 6 represents a sectional view of the machine taken substantially along the line 66 of Fig. 3, and illustrating a portion of the needle-bar mechanism.

Fig. 7 represents, on an enlarged scale, a portion of the mechanism as is illustrated in Fig. 3. I

Fig. 8 represents a sectional view taken substantially along the line 88 of Fig. 7.

2,862,468 Fatented Dec. 2, i953 Fig. 9 represents a sectional view taken substantially along the line 9-9 of Fig. 3.

Fig. 10 represents .a sectional view taken substantially along the line 10 10 of Fig. 9.

Figs. 11, '12 and 13, inclusive, representdiagrammatic views illustrating various positions of the mechanism disclosed essentially in Fig. 7. d

Fig. 14 represents, on an enlarged scale, a sectional view taken substantially along the line 14-14 of Fig. 3.

Fig. 15 represents, on a reduced scale, a sectional view taken substantially along line 15-15 of Fig. 7.

Fig. 16 represents, on a reduced scale, a sectional view taken substantially along the line 1616 of Fig. 7.

Fig. 17 represents, on a reduced scale, a sectional view taken substantially along the line 1717 of Fig. 3.

Fig. 18 represents, on an enlarged scale, a sectional view taken along the line 1818 of Fig. 3.

Fig. 19 represents a diagrammatic view illustrating the paths of movement through which the needle-bar is operated with respect to the rotary loop-taker and the needle-bar actuating mechanism.

Fig. 20 represents a top plan view of the rotary looptaker with its internal mechanisms removed therefrom.

Fig. 21 represents, on an enlarged scale, a fragmentary bottom plan view of the machine as illustrated in Fig. 1 with the bottom cover plate removed therefrom Fig. 22 represents, on an enlarged scale, a sectional view taken substantially along the line '2222 of Fig. 21.

Figs. 23 and 24 represent a portion of the throatplate lifting mechanism in different stages of its operation.

Fig. 25 represents, on an enlarged scale, a sectional view taken substantially along the line 2525 of Fig. 21.

Fig. 26 illustrates an indicia plate which, as illustrated .in Fig. 1, is adapted to be secured to the bed of the sewing machine proper.

Fig. 27 represents a top plan view of a fragmentary portion of the sewing machine bed illustrating a portion of the bed with its slide plate partially removed and with of the throatthe type having a circular aperture adapted for the reception of a needle which is not shifted laterally.

Fig. 33. represents atop plan view of the rotarylooptaking mechanism, together with the means whereby the bobbin carrier is maintained in properposition within the rotary loop-taker.

Fig. 34 represents a sectional view .taken substantially along the line 34-34 of Fig. 33.

Fig. .35 represents a top plan view of the rotary loop taking element.

Fig. 36 represents a sectional view taken substantially along the line 3636 of Fig. 35.

Fig. 37 is a fragmentary view of a portion of the rotary loop-taker and illustrating the manner in which the hook beak is formed.

Fig. 38',represents a fragmentary sectional view taken closed in Figs. 41 and 43 and illustrating the loop-taker in that position wherein the needle-thread loop has been expanded about the bobbin-carrier and is in a position where it is about ready to be cast off from the bobbincarrier.

Fig. 45, like Figs. 41 to 44 inclusive, illustrates a top plan view of the rotary loop-taker and shows the looptaker in the position it assumes just after the needlethread loop has been cast off the bobbin-carrier and is being taken up by the so-called needle-thread take-up mechanism.

Fig. 46 represents an instruction plate of the type secured to the interior portion of the top cover plate for.

the purpose of instructing the operator in the setting of the various controls for the ornamental stitch mechanism of the present machine.

Fig. 47 represents an elevational view of the indicia 'plate which surrounds the hand controls of the present machine.

Figs. 48, 49 and 50 each illustrates a pattern of or-namental stitching which may be produced on the present machine.

Fig. 51 represents a side elevational view of a portion of the sewing machine needle-bar and its associated needle clamp.

Fig. 52 represents a sectional view taken substantially along the line 5252 of Fig. 51.

Fig. 53 represents a left side elevational view of the mechanism disclosed in Fig. 51.

Fig. 54 represents a sectional view taken substantially :along the line 54-54 of Fig. 51.

Fig. 55 represents a sectional view taken substantially along the line 5555 of Fig. 51.

Fig. 56 representsavertical sectional view of the mechanism disclosed in Fig. 51.

Fig. 57 represents a perspective view of a needle-thread guide element which is-adapted to be secured to the needle clamp mechanism in a manner :as is best disclosed in Fig. 51. e

Fig. 58 represents a fragmentary top plan view of the rotary loop-taker mechanism and shows the relation between the twin needles and the loop-taker.

Fig. 59 represents a view similar to 'Fig. 55 and shows the needle-bar clamp as provided with'a pair of twin needles.

Fig. 60 is'similar to Fig. 55 but illustrates the needleclamping mechanism as being provided with two needles instead of one.

Fig. 61 represents a right side elevational view of the needle bar shown in Fig. 51.

Fig. 62 represents aside elevational view of a typical type of sewing machine needle which is employed in the present machine.

General sewing machine structure As illustrated in the drawings, the frame of the sewing machine in which the present invention is incorporated comprises a substantially rectangularrshaped base 1 forming at its upper side a work-supporting surface or bed plate and provided at its under side with a plurality of downwardly extending side walls 22 and end walls elevation view taken'of the left Fig. 44 represents a top plan view similar to that dis- .4 33 forming a box-like enclosure, the downwardly facing opening of which is normally closed by a bottom cover plate 4 held in place by a thumb nut 5 threaded over a stud 6 extending downwardly from the under face of the base 1.

Suitably secured upon the hollow bed 1 is a vertically disposed hollow standard 7 which carries an overhanging bracket-arm 8 terminating in a hollow head 9 in which is mounted a reciprocatory needle-bar 10 and presser-bar 11. The upper part of the bracket-arm 8 is closed by a cover-plate 12 held in place by screws not herein shown. A main driving shaft 13 disposed within and lengthwise of the overhanging bracket-arm 8 is journaled in bearings 14 and 15 (see Figs. 2 and 3) which are secured in the sewing machine frame forming a part of the bracketarm 8. The arm standard end of the shaft 13 is connected with a hand wheel 16 in a manner which is best disclosed in U. S. Patent No. 2,617,375, dated November 11, 1952.

Also secured to the main shaft 13 in a manner as is disclosed in the above noted patent is a gear 17. The

main shaft 13, as is hereinafter described in more detail,

drives the needle-bar 10 carried in the head 9. A looptaker actuating shaft 18 (see Fig. 21) journaled in suitable bearings' 19 and 20 mounted in the base of the machine is driven by the main shaft 13 through bevel gears 21 and 22, shaft 23, and

bevel gears

24 and 25. A pair of actuating eccentrics 26 and 27 are formed integral with the gear 21 and the combination is held in place upon the shaft 13 by a set screw 28. The eccentrics 26 and 27 actuate pitmans 29 and 30 respectively, and these in turn actuate rock-shafts 31 and 32 (see Fig. 5) in a conventional manner. These rock-

shafts

31 and 32 .impart the usual feeding movements to a conventional feed-dog 33 by way of a feed-bar 34 which is connected with the

shafts

31 and 32 by

cranks

35 and 36 of which the latter is connected to the bar 34 by means of a link 37.

,7 V The arm standard 7 is especially designed to provide adequate space for housing sewing machine parts. To

this end, the arm standard is made in substantially the shape of a pyramid, the lower portion of the standard beinglarger than the upper portion. Within the lower portion of the standard is provided a housing generally 'designated by the numeral 38 in which is mounted a vertically disposed electric motor 39. As is best disa closed in the above noted PatentNo. 2,617,375, the arm standard 7 of the present machine is provided with a hollow cylindrical wallv portion 40 for receiving the extended distal end of the motor drive shaft, the upper portion of which is designated by the numeral 41 and is illusas well as the feed rock-

shafts

31 and 32.

As may be best seen in' Fig. 1, the present machine is provided with a conventional form of stitch-length con trol lever 45 which projects into the hollow standard 7 andis pivotally mounted therein upon a pivot pin 46 and i is'forrned with a guideway 47 which is tracked by a pin 148 carried by the pitman 29. Thus, as the lever 45 is shifted about the pin 46, it will lengthen or shorten the effective throw of the feeding mechanism or reverse the ;whereby the plate,:53::may .be grasped Tbyan ea-r 55 and swung: back andiforthfromanopenedrtoa closedpos ition thereby.to;provide. accessfto.the internal portion of the head 9.

The forwardend portion ofjthe main shaftlS extends in the conventionalzmanner.intothe hollowhead 9'for the purpose of reciprocating therneedle-thread vtake-up arm 56.

Referringparticularly to Eigsjl and 2, an intermediate portion of the cover-plate 12 is providedgwith an opening 57.which is normallyyclosed by a p1ate 58 Which is hinged in a manner not ,hereinshown at its rearward portion thereby to permit-,theoperator to gain access to the internal portion of thegmachinefor purposes which will hereinafter bedescribed.

With reference to Fig.1, theintermediate portion of the bracket-M11158 is provid d witha light shade 59 beneath which isdi posed theusual sewing light. bulb 60, which lighting mechanism together with itsshade 59 is shown, in the U. S. Patent No. 2,677,042, dated April 27, 1954.

Ornamental Y stitch mechanism The machine, in accordance with the present invention, comprises a zigzag type of needle-bar which is adapted, in addition to being reciprocated in a direction of its length; to be periodically shifted back and forth laterally of the directionof work-feed-to produce in cooperation with the rotary loop-taker-zigzag stitches. In accordance with th'e present invention, the machine is provided with a group of stacked or nested-cams which are rotated in synchronismwith the-movem-ents-of the needle-bar; a pair of cam followers which arejadapted-to track various combinations ofthe cams, and means for integrating the movements of the two'cam followers and'for-transferring such integrated movements tothe needle-bar mechanism for the purposeof moving-it back and forth laterally of the direction of needle feed. Also, the present machine is provided with operator-influenced means for shifting the cam followers thereby topermit the operator to select various cams for the purpose ofeffecting different patterns of movement of the needle-bar. It is to be particularly understood that each of the cams of the group of cams is dilfcrent from its associate cams so that each cam in effect represents a-different pattern of ornamental stitch movement of the needle-bar. In this connection, it is to be further appreciated'that with two cam followers various cams may be selected to operate simultaneously tothe end that a great variety-of ornamental stitches may be performed with the present mechanism,

Referring particularly to Figs. 2, 3, 7 and 9, the main rotary shaft 13 is provided intermediate its ends with a worm gear 65 which meshes'with a wheel gear 66- formed integrally with a sleeve 67 rotatably. mounted upon a cylindrical stud 65 whose lower portion 69- is mounted within an aperture 71 formed in the bracket-arm 8. A set screw 71 locks the member 69 in afixed position. From this, it isto be understood that rotation of the main shaft 13 will, through the

gears

65 and 66, rotate the sleeve 67 about the member 68.

Referring particularly to Fig. 9, the sleeve 67 is provided with a shoulder 72 upon which rests a stack of eight difierent cams which aregenerally designated by the numeral 73. These cams '73 are centrally apertured so .as to be snugly fitted about the upper cylindrical portion of the member 67 and of these cams the lower seven ,are adapted, to, be clamped to the sleeve member 67 by means of a shoulder screw 75 which isthreaded within the upper portion of the member 68 and. which bears against a retaining plate 76,.for the purpose of locking the lower seven cams against the aforementioned sleeve shoulder 72 thereby to insure that all of these cams will rotate in synchronism with. the sleeve 67.

In order to time the various cams properly, there is provided a timing pin 77 which is snugly received within an aligned aperture 78 formed within each of the various cams. This locking pinis maintained in a fixed vertical position due to the fact that it is provided with a slot 79 which is entered by a peripheral portion of the retaining member 7'6. The. plate 76 is in turn secured to the sleeve 67 by three screws 80-980, each of which is threaded directly into the upper portion of the sleeve 67 in a manner as best disclosed in Fig. 9.

Resting upon the retaining plate 76 is the upper or eighth cam member, designated by the word Special, which, like the remaining cam elements, is provided with an aperture 78 which receives the locking pin 77. This upper cam. member is provided with a collar 81 which is integrally secured to the cam so that an operator may, after lifting'the cover 58, remove this cam and replace it with other selected cams. Quite obviously, however, this upper cam with its handle member 81 will rotate in synchronism with the remaining cams which make up the cam group 73 for the reason that it is mated with the locking pin 77'. The structure of this upper cam and its handle member 81 is disclosed and claimed in my copendiug U. S. continuation-impart patent application Serial No. 636,023, filed January 24, 1957.

As may be best observed from Fig. 9, the lower portion of the sleeve 67 is provided with a large bore 82 within which is disposed a boss portion 83 of a combined needle bight and field selector member 84. The boss 8-3 is turnably mounted upon the vertical pin 68 and it rests upon a shoulder 85 of the sewing machine bracket-arm frame 8. The oppositely disposed end portions of the member 84 carry in a manner as is best disclosed in Figs. 2, 8, 9 and 10, a circular compound cam member which is generally designated by the numeral 86. As will later be described in further detail, the member 86 is provided with three stepped concentric cam facesA, B and C and projecting from a peripheral portion thereof is a needle bight and field selector arm 87 Whichis secured thereto by means of a screw 88. It is to be understood that the arm 87 provides an operator-influenced means whereby the entire member 84 with its cam portion 86 may be shifted back and forth about the pivot member 68.

As is best disclosed in Figs. 3, 7 and 9, the interior portion of the bracket-arm 8 is provided with a pair of stop arms 8989, each ofwhich is adjustably secured to the bracket-arm by means of a screw 90. From Fig. 7, it is to be understood that the arms 89-89 cooperate with the needle bight and field selector member 84 so as to limit the rotary movements thereof.

Referring particularly to Figs. 2, 8 and 10, the needle bight and field selector member 84 is provided at its peripheral portion with a radially disposed cylindrical guide aperture 91 which is adapted to receive for purposes hereinafter described a spherical guide head 92 which is carried by the link or pitman member 93. Still referring to Figs. 7, 8, 9 and 10, the upper portion of the three-part cam member 86 is formed with a recess 94 within which is disposed a lubricating wick 95, the opposite end portions of which depend downwardly into a pair of

apertures

96 and 97. Asmay be best seen in Fig' 3, all ofthe cams 73 are provided with an aligned aperture 98 which is disposed over the wick v so as to permit the operator to oil the wick from an oil can in the usual fashion and thereafter the wick will function to lubricate various parts of the sewing machine including the aforesaid guide ball 92 of the pitman 93.

Cooperatingwith the stacked cams 73 are a pair of cam followers 99 and 100- of which the forward follower '76.

99 is slidably androtatably mounted upon an upright post 101, the lower portion 102 of which is mounted within an aperture 103 formed in the bracket-arm 8 and is locked in position by means of a set screw 104. The rear cam follower 100 is similarly rotatably and slidably mounted upon an upright post 105 whose lower end 106 is secured within an aperture 107 formed in the bracketarm 8 by means of a set screw 108. The

free end portions

109 and 110 of the

cam followers

99 and 100 are adapted to engage the peripheral portions of the

aforementioned cams

73 and 86, as well as the substantially vertically disposed front face 111 of a motion-integrating plate which is generally designated by the numeral 112. As is best disclosed in Fig. 8, the plate 112 is provided with a pair of vertically aligned

apertures

113, 113 which are pivotally mounted upon pins 114 carried on the end of cylindrical members 115 and 116 which are respectively mounted in apertures 117 and 118 provided in the forked end portion 119 of the aforesaid pitman 93. From this, it is to be understood that the plate 112 is pivoted in the manner of a trunnion upon the

pins

114, 114.

Opposite the forked end 119 of the pitman 93, the latter member is provided with a pair of apertures 120-120 through which pass cap screws 121121 which function adjustably to lock that end of the pitman to a C-shaped block 122 in a manner such that the pitman 93 may be shifted lengthwise of itself and relative to the block 122 for adjustment purposes. Referring particularly to Figs. 2, 7 and 18, it is to be understood that the C-shaped block 122 has the free end portions of its limbs pivotally receiving a pin 123 whose intermediate portion is locked within a crank or needle-bar gate 124 by way of set screws 125125. This gate 124 is apertured as at 126 so as to be pivotally mounted upon a depending cylindrical member 127 in a manner as will be hereinafter described in further detail. The gate member 124 is maintained in a proper upright position upon the member 127 by way of a collar 128 which is fastened to the member 127 by a set screw 129. From the above, it is to be understood that the gtae 124 affords a pivotal connection which will permit the left hand end of the pitman 93, as viewed in Fig. 7, to shift endwise of itself for the purpose of shifting the needle-bar back and forth laterally of the direction of work feed in a manner as will be described hereinafter in further detail.

Referring particularly to Figs. 2, 7 and 18, the pitman 93 is adapted tobe spring biased at all times in a righthand direction as is viewed in Fig. 7 by way of a coil spring 130 which has its one end portion wrapped about a distal end portion of the pivot pin 123 while its other end portion is anchored to an arm 131 of a pivot member 132 which, as is illustrated in Fig. 14, is pivotally mounted upon the cylindrical portion 133 of a pin whose reduced lower end portion 134 is anchored in a boss 135 provided in the interior portion of the bracket-arm 8. The member 132 is provided with another arm portion 136 which, as illustrated in Fig. 7, is adapted to engage the rear face 137 of the motion-integrating plate 112 so as to bias the plate together with the pitman 93 in a right-hand direction toward the

cam followers

99 and 100, thereby to force such followers into engagement with various selected cams of the

cam group

73 or 86.

Each of the

cam followers

99 and 100 is adapted to be shifted up and down along its associated

post

101 or 105 so that it may be brought in engagement with a respective one of the cams for the purpose of imparting Various patterns of movement to the pitman 93 and subsequently to the laterally shiftable needle 10. Referring particularly to Figs. 7 and 17, each of the

cam followers

99 and 100 is provided with a slot 138 which is adapted to receive a knife-like element 139 secured by means of a screw 140 to a respective one of a pair of cam-

selector arms

141 and 142 which are in turn mounted upon a cross-shaft designated by the numeral 143.

It is to be particularly observed that each of the substantially

upright posts

101 and 105 upon which the cam followers are respectively mounted is provided with a plurality of slots 144144, which are so arranged that whenever either one of the cam selector fingers 139139 is. engaged within one of such slots its respective cam follower 99 or has its tracking element 109 or properly engaging a respective one of the

various cams

73 and 86. Furthermore, as hereinabove noted, the coil spring 130, by hearing against the arm 131, will urge the motion-integrating plate 112 against each of the

tracking elements

109 and 110 so as to, in 'turn, force these elements into engagement with a selective pair of the cams. The movements of the cams in response to the rotation of the main shaft 13 will, of course, oscillate

thecam followers

99 and 100 about their

respective posts

101 and 105 in accordance with the peripheral configurations of the selected cams.

An operator-influenced mechanism has been provided with the present machine for shifting each of the

cam followers

99 and 100 up and down along its associated

posts

101 and 105, which mechanism includes a pair of cam-

selector knobs

150 and 151 of which the knob 150- is made fast to the forward end portion of the cross shaft 143, while the rear end portion of the shaft 143 is slidably mounted within a cylindrical sleeve 152 which is supported within the rear wall portion of the bracketarm 8. An intermediate portion of the shaft is slidingly supported within an upright bearing member 64 carried by the bracket-arm 8. Adjacent the rear portion of the shaft 143 is adjustably mounted by means of a screw 154 the cam selector 142 in a manner such that whenever the cam-selector knob 150 is shifted inwardly it will disengage the blade 139 of the cam-selector arm from a respective one of the post slots 144 so that the selector knob may be rotated and thereby either elevate or depress the cam follower 100 so that the cam follower may be made to engage a different cam. In this latter connection, it is to be understood that through a rearward movement the cam-selector arm 142 will engage an extended portion 156 of the cam follower 100 for the purpose of rotating the follower about the post 105 in a clockwise direction as viewed in Fig. 7 so as to withdraw the cam followerfrom engagement with the cams and against the biasing action of the spring so that upon a downward shifting movement of the cam-selector arm 142, the tracking element 110 of the arm 100 will not be caught against the peripheral portion of any one of the cams. Whenever the cam follower 100 is placed in a new position, it is to be understood that a forward movement of the knob 150 will be effective to draw the cam-selector arm 142 forwardly and into engagement with a respective one of the slots 144 of the post 105.

The rearward cam-selector knob 151 is formed as an integral portion of a boss 156 which is slidingly and rotatably mounted upon the cross shaft 143 and which carries the cam-selector arm 141 through the medium of a plurality of

screws

157, 157. The cam-selector arm 141 has an auxiliary arm member 158 which cooperates with a projecting arm portion 159 of the cam follower so that whenever the cam-selector knob 151 is drawn toward the operator, the auxiliary arm 158 will engage the portion 159 of the cam follower for the purpose of turning the same in a counterclockwise direction as viewed in Fig. 7 for the purpose of withdrawing the tracking member 109 from engagement with the cams and against the action of the spring 130 in a manner as was hereinabove described in connection with the rearward cam follower 100. It will be understood that the rear camselector knob 151 functions in the same manner as the forward knob in that the turning movement of the former will be effective to raise and lower the forward 'cam follower 99 in the same manner as is effected in connection with the rear cam follower 100.

Referring particularly to Fig. 14, the forward end portion of the cross shaft 143 is provided with a coil spring 160, the opposite ends of which are biased against the internal portions of the cam-

selector knobs

150 and 151 ciatedthat the forward movement "of the shaft 143'and its :knob' 150 underthe influence of the coil spring 160, will be arrested due to the fact'that the rear cam-selector arm 142 will, throughthemediumof its blade 139, en-

gage the rear upstanding post-105; The rearward movement-ofthe knob 151 underthe influence of thespring 160 will be arrested by means of a-stop;-member" 161 whichis carried upon a post 162;=threaded within 'the for-' ward wall "portion 163 of the bracket-arm 8.

Referringparticularly to Figs. 1,3, 7, 14 and 47,,the

rearward cam-selector knob 151 is provided with a pointer 165 which. cooperates with an-indicia plate 166 carried upon the forwardface of the-bracket-arm-S by means of screws 167-.-167 to afford the operator a visual indicationas-to the position of therear cam follower 100. Likewise-the forward-cam-selector knob 150 carries'an indicator 168 which passes -aslot 169 formed in the rear knob 151 so as ;to cooperate with the indicia; plate 166" to-provide-a-visual=indication as to the position of the cam-follower 99; Ash illustrated in Figs. 1; and 47, the arm 168 is adapted'to pointtoward one of a-plurality of indicia letters generally designated by the numeral 165 cooperates in a similar manner withindicia letters 171 which likewise represent various cams.

As hereinabove indicated, each of the rotary cams 73 is non-concentric in the sense that it is provided at its peripheral portion with definite projections and grooves so as to provide a-particular pattern of lateralneedle Referring particularly to Figs; 1, 2, 3, 9 and lO, the

non-rotary cam member 86.is provided with the above noted handle 87 which projects through an aperture 172 provided .inthe front wall of the bracket-arm 8 so that the-operator may grasp -this handleand shift. the same back and forth to effect a turning movement of the member 86 about the axis of the post member 68. As may be best observed in Fig. 47-, the indicia plate 166 is apertured as at 173 to allow for this handle movement while an intermediate portion of the slot 173 is provided with a keeper slot 174 into which the handle 87 will be biased by means of a spring element 175 which connects .the arm 87 to the member 86. From this, it will be ap- .preciated that the keeper slot 174 functions normally to maintain the handle 87 in an intermediate position and that the operator'may shift the handle from this position by biasing it downwardly and shifting it sidewise either in a left or right hand direction.

As hereinabove mentioned, even though the shifting movement of the handle 87 will not actuate the cam followers 99 and-100, it will shift the body portion 86 of the member about the aXisof post 68 and, consequentlyfthe groove 91in which the pitman ball 92 is located will be shifted sidewise to effect a sidewise movement of the right-handend portion of the pitman-93 to the end that the motion-integrating plate 112 will be shifted laterally relative to the cam followers 99. and 100. Thus, 7

the actions of the cam followers and 100 will be integrated in a different manner to the end that the pattern of lateral needle-bar motion will be varied as the handle 87 is successively shifted back and forth. In this connection, it is to be understood that as the

cam followers

99 and 100 pivot backand forth about their

respective posts

101 and 105 in conformance with the rotary .motions of the stacked cams 73, the motion integrating plate 112 will absorb these cam-follower motions by pivoting about: its trunnion-pins 114-114 and by shifting back Special cam.

that-the'letters'K to R inclusive as noted on the indicia ;plate'166"correspond respectively to the cams C to J inelusive," so'that for example, when the

pointers

165 and 170, each of which lette'rs'corresponds to a respective= 25 one of the various above mentioned cams, while the arm -transmitzthe motions t'othe needle-bar 10' in a manner as will hereinafter be described in more detail. Quite obviously, 'thecam 'followers99- and ltitlmaybe placed in engagement with a single one of the various camsor in the alternative the operatormay-place the followers in contact with different cams thereby; to effect variouscombinations of movements.

Although the present invention contemplates-the usage of different combinations ofcams, the form of the invention illustratedin'the present drawings is so constructed that the rear camfollower 100 may be shifted into engagement with any one off'the earns 73 and which in Fig. 9 are labeled individually by the letters Aw I inclusive,-and-by"the word'Sp,ecial. The forward cam follower99, however, is adaptedto engage only those cams which bear the lettersC to J inclusive as well as the In this-connection, it is-to beunderstood 168 are respectivelyset adjacent the'letters K and C the cam followers 109 andlll) will each engage the same cam.

' These letters havebeen placed on the indicia plate to assist the operator in selecting various ornamental stitch patterns which, as'is shown-in Fig. 4-5, are illustrated on 'aninstruction-plate generally designed by the numeral 180, whichplate may be'secured to the inside portion of Quite obviously, however, the patterns-illustrated onthis plate are'merely a few of those which itis possible to produce with-a machine of'this type. The instruction plate 180 does not give any information as regards the i use of the so-called Special cam and, as hereinabove from zero to maximum either across a'center linethrough ;A and K settings of the

knobs

150 and 151 produces pointed-out, various special cams may-be substituted to provide patterns in-accordance with the requirements of various typ'esof work.

Thisinstruction plate 180 with its associated mechanism is disclosed and claimed in my copending U. S. continuation-impart patent application Serial No. 591,718, filed June 15, 1956, now Patent No. 2,848,963.

From the above, it is to be appreciated that the manually controlled lever 87 which'actuates the lower three cams A, Band C, .as well'as the guide groove 91 for the pitman ball'92, has two functions of which the first is to provide conveniently controllable means for determining a neutral position of non-vibration of the needle at the center or at either side of the field of lateral throw of the needle, whereby the needle may be caused-to perform straight stitching along a center line through'the field or along a line disposed entirely at either of the tWQ'SidCS ofthe field. Also by the use of this means as well as the various-cams, the needle can be caused to vibrate laterally the field or entirely from either of the two sides of the field.

Fig. 11, diagrammatically illustrates the number 3 (see Figr47) or central positionof the arm 87 which with the straight stitching along a line 43 running centrally through the field of lateral needle vibration.

Fig. l2illustrates the number 5 or right-hand position of the arm 87 which with the A and K settings of the knobs and 151' produces straight stitching along a line dis-