US1252015A - Needle-operating mechanism for sewing-machines. - Google Patents

Description

*1. n MOFFATT. NEEDLE OPERATING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED JAN-1,1915.

Patehted J'an. 1,1918.

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J. R. MOFFATT. NEEDLE OPERATING MECHANISM FOR SEWING MACHINES.

APPLICATION mzq JAN. 1. l9 |5.

Patented Jan. 1,1918,

-To all whom it may concern:

LAKES B.

norra'r'r, or cnrcneo, rumors, ASSIGNOB 'ro UNION-T srncnu. men-Inn GOKPAIIY, OI CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

NEEDLE-OPERATING MEQ HAI IISM FOB; SEWING-MACHINES.

Be it.known that I, Junie B. Morra'rr,

a citizen of the United States, residing at Chicago; in the' county of Cook, State-of Illinois, have invented certain new and useful Improvements in Needle -.Opera tin1g1' Mechanism for Sewing-Machines, of whic the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

The invention relates to new and useful improvements in needle operating mechanism for sewing machines and more particularly to the mounting of the needle lever which reciprocates the needle bar.

An object of the invention is to provide a needle lever and supportingmeans therefor, which is so constructed that the needle lever may be adjusted in a direction transversely of the plane of its oscillation for bringing said needle lever into proper alinement with the needle bar.

A further object of the invention is to provide a needle lever supporting means of the above character, wherein the needle lever is soconnected to its oscillating supportin sleeve that" said needle lever may be shifte endwise of the sleeve for proper p0 iitioning the 'needle relative to the needle ar. y

These and other objects will in part be obvious and will in part be hereinafter more fully described.

In the drawings which show blyi illustration one embodiment of t e tion 4 Figure-1' is a front view of a sewing machine embodying my improvements;

Fig. 2 is a plan view thereof; Fig. 3 is a horizontal sectional view through "a portion of the overhanging arm,

way of inventhe needle lever and the supporting means therefor;

Fig. 4 is a F1 3" y %ig.5 is a view similar to Fig. 3, showing of supporting means for a modified form of Fig. 5; Fig. 7 is a view similar to Fig. 3, showing a further modified form of the supporting the needle lever; and

me'ansfor j t Fig. 8 is a perspective view showing the Specification Letters Patent. Application flied January 7, 1915. Serial 1%. 938.

needles 8 and 9. The needle bar is provided section, on the line of,

Patented Jan. 1, 1 91's.

bushing detached and the pivot construction shown in Fig. 7.

The invention consists generally in pro} stud of the viding a needle lever which is oscillated about a supportin ivot for reci rocatin the needle bar. This needle leve is piv otally supported on the overhan 'ng arm-of the machine and in one form 0 the invention the lever is attached to the support therefor, so that it may be shifted endwise of the support or in a direction transversely of the plane of oscillation of the needle bar. The needle lever is preferably located in a plane containing the needle bar. In order that this needle lever may be properly posi tioned for connection to the needle bar in the assemblin of the parts, it is extremel desirable to ave some means which wil permit the lateral shifting .of the needle leverso as to brin it into proper alinement with the needle ar. This shifting of the needIe'lever von its supporting sleeve ac- I complishes this result.

In another form of the invention the pivot stud which carries the needle lever is mounted in a bushing which may be adjusted endwise for accomplishin this purpose.

Referring more intietail to the drawings, I have shown my invention as applied toa sewingI machine having a supporting bed 1, a wor support 2, a standard 3, which carries an overhanging arm ll The overhanging arm 4 carries bearing blocks 5 and 6, 111 which reciprocates a needle bar 7. The needle bar 7, as herein shown, carries the with a collar 10 which has a laterally projectin ear 11. The needle bar is reciprocated y a needle lever 12 which is pivoted at 13 to the overhanging arm 4. This needle lever is connected by suitable spaced parallel links M to the projecting ear 11 on the collar 10. v

The needle lever 12 has an arm 15 which carries a'ball stud 16. A link 17 engages the ball stud 16 and is ri 'dly attache to a strap 18 cooperating wit an eccentric on the main shaft 19 of the machine.

As shown in Figs. 1, 2 and 80fth6 drawin wlii ch is mounted so as-to freely oscillate on a su porting stud 21. The overhanging arm is ormed with a socket 22 and} with a threaded opening 23 which leads the this needle lever. is fixed to a sleeve 20 a proper alinement with the line of reciproration of the needle bar and thus a nonsocket to the rear face of the overhanging arm. The stud 21 is provided with a reduced threaded end 24 which engages the threaded opening 23 and a lock nut 25 holds the stud in place in theoverhanging arm. The outer end of the stud 21' is provided with a head 26 and'the sleeve 20 oscillates on the stud between the head 26 and the inner face of the socket 22. The sleeve 20 is formed with two spaced threaded sections 27 and 28 and with a smooth enlar ed section 29 between the same. The nee 1e lever is adapted to be placed on the sleeve and has an' opening therethrough fitting the smooth'section 29 A key 30, extends into a groove formed in the enlarged section 29 and a groove in the needle lever and prevents the needle lever from turning relative to the sleeve. A nut 31 engages the threaded section 27 and a nut 32 engages the threaded section 28. It will be readily seen that these nuts may be set up against the front and rear faces of the needle lever and will clam the same firmly on the sleeve whichoscillates on thesupporting stud. By turning the nut 32 so as to move the same away from the'lever and then turning up on the nut 31, the needle lever maybe shifted relative to the sleeve on which it is mounted in a direction away from'the overhanging arm. Byturning the nuts in the opposite directions the lever may be shifted toward theoverhan ing arm. This permits the ready shifting 0% the needle lever so that its plane of oscillation may be brought into binding connection made between the needle lever and the ear on the collar carried by the needle bar.

In Figs. 5 and 6, I have shown a modified 'form of the invention. In this form of the invention, the overhanging arm 4 is provided with a bushing 33. Located in the bushing 33 is'an oscillating supporting stud 34 for the needle lever. This supporting stud'is held in the bushing by a suitable nut 35 which bears against a washer 36 The other end of said stud is provided with a threaded section 37, a slightly reduced section 38 for the needle bar 12, and a further threaded reduced section 39. A nut 40 engages the threaded section 3.7 and a nut 41 engages the threaded section 39.

The smooth section 38 which carries the needle lever 12 is formed with a groove and a key 42 engages said groove and a groove.

in the needle lever and holds the needle lever from movement on the stud in a direction about the axis of the stud. By shifting the nuts 40 and 41 as described in connection with the nuts'31 and 32, the needle lever may be shifted in a'direction endwise of its supporting stud or toward and from, the overhanging arm.

slightly In Figs; 7 and 8 of the drawings, I have shown'a further modified formof the invention. In this form of the invention, the overhanging arm 4 is provided with a. bushing 43, which is capable of endwise adjustment .on the overhanging arm. Said bushing is threaded, as at 44, and a nut 45 engages said threads. The bushing is also threaded at 46 and a nut 47 engages these threads. The stud 48 is fixed to the needle lever 12 and oscillates in said bushing 43 and said stud is held in the bushing by a nut 49, which bears against a washer 50. The stud at the other end thereof is formed with a flange 51, anenlarged section 52 on which the needle bar is keyed and a nut 53 threaded on to the outer end of the stud clamps the needle bar from movement on the stud. By loosening the nut 45 the bushing 43 may be moved endwise in the overhanging arm and by turning up on the nut 47 it will be held in this adjusted position. This adjustment of the bushing 43 shifts the needle lever toward the overhanging arm. An adjustment of the nuts in the opposite direction will shift the needle lever away from the overhanging arm. By this shifting of the bushing the needle lever details of construction and arrangement of parts may be made Without departing from the spirit of the invention, as set forth in the pendin claims.

Having t us described my invention,'what I claim as new and desire to secure by Let ters Patent, is

'1. In a sewing machine, the combination of an overhanging arm, a needle bar reciprocating in said arm, a needle carried thereby, a needle lever for reciprocating said needle bar, and means for pivotally supporting the needle lever, whereby the latter may be adjusted transversely of its plane of oscillation for alining the needle lever with the needle bar.

2. In a sewing machine, the combination of an overhanging arm, a needle bar reciprocating in said arm, a needle carried thereby, a needle lever for reciprocating said needle bar, and means for pivotally su porting the needle lever including threaded nuts,

needle lever in a direction transversely of its plane of oscillation.

of an ove 3, In a sewing machine, the combination of m overhanging arm, aneedle bar recip-' rocatingm and arm, a needle carried thereby, a needle lever for reciprocating said needle bar, and means for pivotally supporting the needle lever includang' a supporting stud, and means for shifting sai needle lever in (direction endwise of said stud and,

holding said needle lever in an adjusted position. c

4. In a sewing machine, the combination arm, a needle bar reciplocating in sai arm, a needle carried theregi', a needle lever for said neee bar, and means for plvotally supporting the needle lever including a supportl stu an oscillating sleeve carried by said supstud, means for keying said needle lever to said sleeve, and means for shifu 'ng the position of the needle lever endwise 0 said sleeve and forholding said needle lever in an adjusted 5. In a sewing machine, the combination of an overhanging arm, a needle bar rccip roeating'in said arm, a needle carried therea needle lever for reciprocating said neebar, means for ivotally supporting said needle lever inclll g a stud fixed to the overh arm, a sleeveoscilla whereby said sleeve oscillates with said needle lever, said sleeve having spaced threaded sections located on opposite sides of the needle lever, a threaded nut for each threaded section, said nuts being adapted to engage the opposite faces of the needle lever, whereby'the adjustment of, the nuts will vary the position of the needle lever on v the sleeve.

on said stud, a needle lever keyed to 'sai sleeve,

6. The combination of a needle lever, a a

needle bar reciprocated thereby, and means for pivotally supporting the same whereby said needle lever may be adjusted transversely of its plane of oscillation for the same with the needle bar. 45 7. The combination of a needle lever, a Y support therefor, a stud adapted to be fixed to the support for the fleedle lever, a sleeve oscilla in said stud, said sleeve being keyed to said needle lever, said sleeve havto ing spaced threaded sections located on opposite sides of the support for the needle lever and a threaded nut for each threaded section, said nuts being ada ted to engage the opposite faces of the n by the adjustment of the nuts willvary the position'of the needle lever on the sleeve.

8. The combination of a supporting stud, a sleeve carried by the stud, a lever, and

means for removably clamping the lever to 60 i said sleeve.

9. The combination of a stud, a sleeve mounted on said stud, a lever'keyed to said sleeve and capable of lateral movement thereon, 'said slqave having spaced threaded sections located .on opposite sides of the lever, and a threaded nut for each threaded section, said'nuts being adapted to y the opposite faces of the lever, whereby adjustment of the nuts will vary the posi- 79 tion of the lever on the sleeve.

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

J AMES R. MOFFATI;

,Witnesees:

B. Tsunam- S. Gnoass Tara.

a lever where- 55

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