US1485804A - Pulling machine - Google Patents

Description

March 4, 1924. 1,485,804

C. J. NEDDERSEN PULLING MACHINE 7 Filed Aug. 15 1922 2 Sheets-Sheet 1 q INVE/VTOP. CHARLES J. NEDDERSEN BY M m March 4, 19240 I 1,485,804

' C. J. NEDDERSEN PULLI-NG MACHINE Filed Aug. 15. 1922 2 Sheets-Sheet 2 IN l/ENTOR. CHARLES J. NEDDERSEM ATTO/PNEYS.

Patented Mar. 4, i924.

i f ifi.

CHARLES J. NEDDERSEN, OF OAKLAND, CALIFORNIA, ASSIGNOR OF ONE-HALF T SIGMUND KIRSGHBERG, OF SAN FRANCISCO, CALIFORNIA.

PULLING MACHINE.

Application filed August 15, 1922. Serial No. 581,922.

'10 all whom it may concern:

Be it known that I, CHARLES J. Nnnnnn- SEN, a citizen of the United States, residing at Oakland, county of Alameda, and State a of California, have invented new and useful Improvements in Pulling Machines, of which the following is a specification.

This invention relates to sewing machines such as employed in connection with tent lo and awning work, and especially to a pulling attachment therefor.

Jhen sewing heavy fabrics, such as canvas, etc, employed in tent and awning work, an operator and a helper were usually required for each sewing machine. The operator guides the material and actuates the sewing mechanism, while the helper pulls the fabric away from the sewing machine and removes each section complete. To imso prove this condition a so-called pulling machine has been applied to sewing machines of this character with the object in View of entirely eliminating the helper. Practical experience has however shown that even as though a pulling attachment is applied, a helper can be employed to advantage as a two-needle machine with a pulling attachment, without a .helper, will sew approxiiately 1900 yards in eight hours, while a and for raising and lowering the same with the goods when required.

Other objects will hereinafter appear.

One form which my invention may assume is exemplified in the following description and illustrated in the accompanying drawings, in which Fig. 1 is a side elevation of a sewing machine partly in section, showing the application of the pulling attachment.

Fig. 2 is an end View of a sewing machine partly in section, said view illustrating the sewing mechanism and the needles operated thereby and also illustrating the pulling attachment and the position thereof.

Fig. 3 is a detail view of a compound clutch employed, said clutch serving the function of a feeding and a checking clutch, and further serving the purpose of driving the pulling attachment.

Fig. & is a cross section of the clutch taken on line 4.-4, Fig. 3.

The present invention relates to that type of sewing machine which is adapted for heavy fabrics, such as canvas, etc., employed in tent and awning work, and it relates especially to a pulling attachment whereby the fabric is removed or pulled away from the sewing mechanism during the operation of 1L m ruihlco rhiteilp'lc .EJlIlIHIlTUfLSBGlUETU smetost hilplorsi. l 1 and. 1 112.2.

.s EVJBRiW-ECUPU with. a mulling attachthe machine. A machine of this character menu I 31 [2d] ta el nielqri a Iit'il is no." if. 3110) J; arnuli ii I u 1 nsui lrl p rcpilolysya a :hsr: q i atiat e L. .01 n rw'hicir lie .1: life 3i dune] 'aiuii d )l'KdJYflJl-XEWE] uiniutetscs l n[ rt than i: '1 I romuheto 12 as asairign g] l radii [5:5 iiaii h a) lpiliihlrgl g;

' i mm a teen: rtltnonlg'l 1! 2p rllliiiifgi 1:ta; rohc1rt| [ii i ;l 1 itch i I hi eeseivgn dish (13: harmonies: itel LBE so? P o myriplrryh i: :oo mlplei .ei fidiciimcys :in it )0" serum l:' 1 i; g] inulcnaisint e mi: (t .Tkll r cochlea m 2: :toiatcd d 1:. s3 5 1 a to itteic I Emul'nlt s2 .3 an a canned: ['11 ylo; It lull a A llc O-l i -i f. itiiehayh whillmei ttl L33". (g elaeli rim-mm a see" a it i, titaii'li an no E i1 :11 ilpkpa I t vrise EC to I: :oonggatoi 1r clinic s1 dierniaiittt's it i '1: El w a lln q qeresiall .t 1 iiv'enatritio: 11 (letter st n 2 i a ['11 rL-i l l rises-shun l ."lllh a :dxlikigi ga nzttzlcnnicn h v h'lcir l t i mtecb f: i from m k if; llullllllllg, 51 taaclnhieier 1 i h icl'cl 1' i more 1 5' id lei arm-s: t intact"; c i I t? rel 1 [protein 11m 1 ,1 iisrLsi'nse 5a a I .arztdrl: t L: lino/rm: ii ..3 ii I o iomlipu t2 .1 air. .1 l srctmbir us :i at ip'rzl oq uh mt: ail L'lElilB'fllLEEfU l: ii iii iggisg E 'lhi' A ornugrgtcth t orbsl l at 1l313t t7 1 u 5i l".f:lm [1 ii :1 am eeinigi' gi innlclnie 10 "r. f lthie' nlrmctcric fiwihlc 3 fkhi nla'ici q asses sircui ii if] iihi a :isiazmozz zlmivign gr 2; l;.:]11iig g1 .taoi'oherch ia agii ixlib 5, italres'sotc uauragefc d1 my to? t; :priir s a .ucfdiiiriuach 51 t: 11: and 55min it his lllihistutstb if it] ti 1p :reusexi ii revrrhioinr [lli lllhh :priii jiililitsttimtls (z; a t[ )l is .::=)L{E1l l3ll310ifwl viii lEl( 5w M001] artist .isr; 11 )tnuh thins] ant rd Jlrdy; ii 1a: ziglg .iQlBlI with lhl an (r oceldds :Est he ta 5] 5 ll (sic-i $5 or nirmntetu jdrernha iszi'nig gt r diplzgis stitin 1a: mhl anti '2. di mm fBdl t tsttiigigil 1p tglll [01 n [an] if ailau'rh ,l [n n rimet'euilztlll il icnsrcnnig gfl a Jew qapnciyi 1a ."fldl it 101:1 Whilliti lei ltEl l i Ufjjlllllg g? all); 5i 1 iiiiidicaalis h t: .li kl la 110."? m ck Elicia innlciniau itlieie kfbg'aab E tiiel ip Element 5 idpsnode 10 it itd viii was, a; that: .ia n 11 anion it] Ll-J irfmutioin1;:dinigig;it(gsnaneilayl';ziriipr j oma not i t zircroilidia; at hill 3 L middle 5: l, [Pdlf t lid! 2 iiizisicl 2( c or siniipi p'l jlf y ulili Iiigr g1 ttaiclnhmeisi s h )fl llI-l .cl charm t 'rtlmd: LC/If )fl L31. omchikfoi 2 l lli. c cocrrlglg atod' xldall E it: n )1 Eu :1" irfeircode d( t 1:, Ifllr l1 IHI10 TS iqoeriiifailql'l ,3 bsflatbi arm at .irluiarej i ti 1 1r iuisinoi if norm 1 lun a r .aini nl rive? E1 i )5 to t 'nvovliz' c2. idululpic Ii ipltililiig gt ttacrohcnhi; slshtt: t a hriicbat tl tr eeseirgi gnoc'arlnlinisi m: cm 'fllifz tiis rm ormnqreutatigi ipjdlsi s, .re [1 tglilu'lrzgi g I irddbyl ime their (B1 1: llfi actuatii l no :eecitrtcic i z r lignnonn' ti an .1112: or man s: ,3 m, l nn in t2 1 .4 .ssscaclerod unis rzliitit 51 ran on. o acsitlilatigna the: c E elii' at luneroi) f ,2 .3 Kllll hit'antehe it c )g toivi'olii' 1 :ounrc c1131 if t itrnsiaiihtetb if firm 3 :iche :eecmrtrii gt;ancrawl5ioi)it@ometahig,ptkhapphlbiersiuitur inosnrtrwa astslftit lthrcuoglgrinaim.oiiifi ammetadtigl g1 rod 6, a crank arm 7 and a compound clutch generally indicated at F. There are two corrugated rollers employed in each instance, one lower set of rolls as indicated at 8 and 9, and an upper set of rolls as indicated at 10 and 11. The roller 8 is secured on the shaft 5, while the roller 9 is secured on the clutch housing indicated at 12. The lower rolls are driven in unison and in the same direction, and similarly the upper rolls 10 and 11 as they are driven through frictional contact with the lower rolls.

The cloth advancing through thesewing mechanism is fed and advanced in the usual manner, that is by a step-like intermittent moven'ient, and it is therefore essential that the corrugated pulling rolls be similarly rotated as the fabric might otherwise be pulled away from the needles and thereby interfere with the sewing operation. For this reason an intermittent turning movement is transmitted to the lower rolls 8 and 9, and this is accomplished in the following manner:

Shaft 5 is SUPPOltQCl in a pair of journal members indicated at 14 and 15. Surrounding the shaft and turnable independently thereof is a sleeve 16 and forming a part thereof is a clutch member. This clutch member has pockets formed therein as indicated at 18, and a roller 19 is disposed in each pocket. These rollers engage with the inner surface of the clutch housing 12 and form a driving connection between the clutch member and the housing when the sleeve 16 is turned in. one direction. In other words a roller type of clutch is employed and is in this instance divided into two clutch sections as shown at 20 and 21, the clutch section 20 being intermittently rotated by shaft 8 through means of the eccentric 4, the rod 6 and the crank arm 7 which is secured to the sleeve 16. The clutch section 21 rotates the entire clutch housing and the corrugated roller 9 secured thereto. The housing again drives the clutch section 21. and a sleeve 22, and as this sleeve is keyed to the shaft 5, an intermittent movement will be transmitted thereto, that is a roller clutch of this char acter is positive in action and as such transmits movement to the housing 12 and the shaft in unison, and as one clutch is reversed withrclation to the other, retrograde or reverse movement of the feeding rolls 8 and 9 is prevented. The clutch 20 may therefore be termed a feeding clutch and the clutch 21 may be termed a checking clutch.

The upper feeding rolls 10 and 11 are journaled in fork shaped members such as shown at 25 and 26 and these members are in turn carried by rods 27 and 28, which are suitably journaled in bearing members carried by the puller head C. Each of the rods 21 and 28 is surrounded by helical springs as shown at 29 and these springs normally exert a downward pressure on the rods and the forks 25 and 26, thus maintaining frictional engagement between the upper and lower feeding rolls. However when it is desired to enter the fabric or to release the same, the upper rolls are manually lifted through means of lifting levers such as indicated at SO and 31. These levers are connected to'a common rod 32 by means of links 33 and the rod 32 is again connected to a foot treadle not here shown, that is when pressure is ere erted on the foot treadle, a downward pull will be exerted on the rod 32 and the links 33 and the lifting levers 30 and 31 will then swing about their pivotal mountings and exert an upward lift on the rods 27 and 28. The upper rolls 10 and 11 are in this manner elevated and the fabric may then be freely exerted or removed. The advantages of the duplex or compound pulling attachment here shown a re numerous: first of all it materially increases the output or apacity of the sewing machine; secondly it entirely eliminates the use of a helper; third, it always maintains or exerts a straight pull on the fabric passing through the sewing mechanism and as such produces a regular or straight scam. It fi'uthern'lore prevents bunching of the fabric between the needle and the throat of the machine and in other words relieves the operator of any care outside of that of guiding the material to the needles and actuating the sewing mechanism. With the pulling attachments now in use 1900 yards of sewing are produced in five hours and forty-five minutes, but a helper is required to produce this output, while with the pulling attachment here shown 1900 yards of sewing are produced in four hours and forty minutes, and without the use of a helper. The capacity of the sewing machine is thus materially increased and the wages and time of a helper may be entirely eliminated.

While certain features of the present invention are more or less specifically illustrated, I wish it understood that various changes in form and proportion may be resorted to within the scope of the appended claims, similarly that the materials and tinish of the several parts employed may be such as the experience and judgment of the manufacturer may dictate or various uses n'iay demand.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. The combination with the sewing mechanism on a sewing machine, of two separate pairs of devices for gripping the fabric after it has passed through the sewing mechanism at two separate horizontally spaced points behind the needles, and means to operate said gripping means intermittently in unison to effect a double, side by side, pull on the fabric to preventbunching of the fabric between the needle and the throat of the machine and thereby effect the production of a regular or straight seam.

2. The combination with the sewing mechanism on a sewing machine including the pulling head of the machine,of separate gripping means located to grip the fabric after it has passed through the sewing mechanism at two spaced, side by side points, one of said gripping means being located substantially midway between the ends of the pulling head, and means to operate said separate gripping means to exert an intermittent double, side by side pull in unison on the fabric.

3. The combination with the needle and the needle actuating mechanism of a sewing machine, of a pair of corrugated rollers disposed on the discharge side of the sewing mechanism and in alignment with the needles, a second set of corrugated rollers dis posed on the discharge side of the sewing mechanism and spaced from the first named set of rollers, and means for imparting an intermittent rotary movement to both sets of rollers in unison to effect a double, side by side pull on the fabric to prevent bunching of the fabric between the needles and the throat of the machine.

4:. The combination with the needles and the pulling head, the needle actuating mechanism of a sewing machine, of a pair of rollers disposed on the discharge side of the sewing mechanism and in alignment with the needles, a second set of rollers disposed on the discharge side of the sewing mechanism and spaced horizontally from the first set of rollers and located substantially midway between the ends of the pulling head, and means for imparting an intermittent rotary movement to both sets of rollers in unison to effect two separate, straight, side by side pulls on the fabric to prevent bunching of the fabric between the needles and the throat of the machine.

5. The combination with the needles and the needle actuating mechanism of a sewing 7 machine of the character described, of an upper and a lower corrugated roller disposed in alignment with the needles and on the discharge side of the sewing mechanism, said rolls adapted to grip and engage the fabric after passage through the sewing mechanism, an upper and a lower corrugated roller disposed on the discharge side of the sewing mechanism and on one side of the first named rolls and in horizontal alignment with and spaced from the first named rolls, and also adapted to receive and grip the fabric, and means for imparting an intermittent rotary movement to both sets of rolls in unison.

6. The combination with the drive shaft in a sewing machine of the character described and the sewing mechanism actuated thereby, of a shaft disposed adjacent the drive shaft and arranged in parallelism therewith, a double acting roller clutch on said shaft, an eccentric on the drive shaft, a crank arm actuating one of the roller clutches, a connecting arm between the crank arm and the eccentric whereby an oscillating movement is imparted to the clutches, a corrugated roller secured on the second named shaft, a second corrugated roller carred by the clutch and located remote from the first named roller, and a pair of corrugated rollers disposed one above each of said rollers and cooperating therewith.

CHARLES J NEDDERSEN.

Images