US1084194A - Circular-knitting machine. - Google Patents

Description

W. H. n E. BLACKBURN.

CIRCULAR KNITTING MACHINE.

APPLICATION FILED AUG. 6, 1909.

Patented Jan. 13, 1914.

kcircular knitting Um Af f' TED STATES PATENT oElricEY.l

ENGLAND.

CIRCULAR-KNITTING MACHINE.

1,084,194. Specification of Letters Patent `PatentedJan. 13,1914.

Application filed August 6, 1909. Serial No. 511,526.

To all whom t may ooncemf.'

Be it known that we, WILLIAM HENRY BLACKBURN and RICHARD BLACKBURN, subi` jects of the King of Great Britain, and residents of Nottingham, England, have invented certain new and useful Improve' ments in 'Circular-Knitting Machines, ofwhichthe following is a specification.-

This invention relates to improvements in machines with multi-feeders, and its object is to producev on such machines, knitted fabrics with vertical stripes in twoor more colors.

Referring to the drawings, Figure 1. is an interior view or development of part of the cam cylinder-showing the disposition of the cams and the needles. Fig'. 2. is a ,ver-

'tical section of the cam and needle cylinder of the machine. Figs. 3, 4 and 5 are views showing the dierent forms of needles ernployed.

Like letters indicate like the drawings. i

According to this invention the circumference of the machine is divided into an equal number of sections, each of which is provided with its own thread feeder, sinker, and needle operating cams, 'thewhole of which are'reciprocated, so that each thread is always supplied to and knitted on the same section or group of needles in the` ma'- chine.

Every alternate section in the machine is filled with needles A (see Fig. l.) each provided with an upper butt A1, that is a butt situated some distance up the needle stem, and the remaining sections with needles B each provided with a lower butt B1, that is a buttnear the lower part of the needle Stem. One of the needles A with an uppery butt A1 is shown detached in Fig. 3. and one of the needles B with a lower butt B1 parts throughout is shown in Fig. 4.

The joining needles C at the ends of the sections, that is those needles'which are situated at the points where one section ends and another begins, are (as shown more clearly in Fig. 5.) eachprovided with two butts C1, that is, both upper and lower, but the said -butts C1 of these needles C are as shown,-

made shorter than the butts A1 B1 of the other needles.

lower butts in alternatefise'ctions of the ma- 4 chine, and arranglng the cams as described, space is providedfor eachset of cams to .run out of its own section into-the one next to it on either side, without operating the needles in the latter sections. Referring to Fig. 1. the cam-ring D has just completed its movement to the left, and the sets of cams are all on the left of the groups of the needles which they operate. The camring D will now move to the right as indicated by the arrow, and on the completion of this movement, the cams shown on the left ofFig. l. will have moved into the same position as the cams shown` on the right.

The knitting -vcams E in the upper tier are of full thickness, and their inner faces are flush with the inner' face of the cam-ring D, (as shown in Fig. 2.). The clearing cams E1 E2 on either side of the knitting cams E, are only abouthalf the thickness of the knitting cams E, and their inner faces are consequently sunk below the inner face of the cam-ring. The knitting cams E not only actuate the needles A with upper butts A1,'but they engage with the upper butts C1 of the joining needles C in their respective sections, and actuate the latter as well. The clearing cams E1 E2 being of reduced thickness or sunk, do not engage with the short upper butts C1 ofthe needles C,but engage with the butts A1of and cleart the needles A every course.

The knitting cams F in the lower tier, are the same as and act in a similar manner yto thev knitting cams E previously described, that is to say, they engage with the butts B1 of and actuate the needles B; theyv also engage with thelower huttsC1 of and actuate the joining needles C in their respective sections. The clearingcam F1 on the left of the knitting cams F is of reduced thickness or sunk, it will therefore engage The needle operating cams are arranged with the butts B1 of and clear the needles B, but will not engage the lower butts C1 ing needles of the joining needles C. The clearing cams F 2 on the right of the cams F may be full thickness and flush with the inner face of the cam-ring D, in which case they engage with the lower butts C:L of and clear the joining needles C, as well as the needlesB every course,

every other course, these cams are constructed as shown in ther drawings.

In this case the upper part of the cam F2' is cut away or reduced so as to form a lower step at F3, (see Fig. 2.) and a tumbler G is pivoted in a recess at one end, as shown more clearly moving to the left, the top of the cam F2 acts on the butts B1 of the needles B and clears them, whileonly the lower step F3 of said cam engages with the short lower but-ts C1 of the joining needles C, and this' raises the latter, but not'high enough for them to clear their loops. In moving to the right', the tumbler G is turned up by the needle butts, and the joining needles C are in this case raised and cleared as well as the ordinary needles.

The' general action is as follows z-The needles A with upper butts A1 in each of the sections, are caused to knit each motion by the action of the knitting cams E, and are cleared by onercr the other of the clearing cams El and E2. The needles B with lower butts B1 in the remaining sections, are caused to knit each motion by the knitting cams F, and are cleared by the clearing cams Fl and F2, to the right, and the latter when moving to the left. The joining needles C at the ends of the sections, are actuated by both the upper and lower knitting cams E and F,`

and theyth-us knit twice to the others once, each .forming the first needle in one section,- and the last in the next section, taking bothI threads. These needles C are only cleared by the clearing cam F2, and when of the construction shown, it raises the joining needles C high'enough to take the yarn, but not high enough for them to clear their loops when moving to the left, but thetumliler G comes into action and raises them to the full extent when moving to the. right, j

.so that these needles C are only cleared every othercourse. These joining needles C -thus tuck and knit alternately, so that they cach hold the thread from the section on one side, until they have taken the thread from the section on the other side, and then clear *hotln lVith this system of working a per.

fectly straight joining line is obtained at the points where the respective strips of inatcrial, knitted on the different sections, are joined together.

rl`he needle cam-ring D through the requisite angular space well known mechanical contrivance,

is reciprocated by any and the or in order to clearthe joinin Fig. l. When the cams are the former when moving of a reciprocating cam ring,

ends of the groups sinker cam-ringH (see Fig. 2), which is provided with a set of cams for each section, is connected to the needle cani-ring D by a well known lost motion device, so that the needle cam-cylinder has always the requisiteV lead of the sinker cam-ring, .as is well known.

The thread feeder may comprise a ring J j provided with a hole J1 for each thread, said holes being spaced the required distance A apart, andjas ferent color, the various colored effects v, which can be produced in the fabric is very considerable.

a seat provided for it in the sinker cam-ring H, and is connected to the reciprocating needle cam-ring by means of any well known friction driving device. Fixed stops are proeach thread `may be of a dif- The thread feeder ring'J described, rests in 80 vided to bring it to rest before the cam cyl- 35 indeii-iat the end of each movement in either direction, so that it always starts with the requisite lead or in advance of theneedle cams.

What' we claim as our invention and de- 90 sire to secure by Letters Patent is j l. In a. circular knitting machine for making vertical striped fabrics, the combination of a reciprocating cam ring, reciprocating thread feeders, ordinary needles arranged in groups those in alternate groups all having upper Alont-ts and those in the `remaining roups all lower butts, joining needles at the ends of the groups with' both upper and lower butts shorter than those of the ordif naryA needles, needle operating cams arranged alternately in upper and lower tiers in the camv ring, knitting cams in both tiers that will'operate both the 'ordinary and joining needles, sunk clearing cams in one tier 105 that will clear the ordinary needles, sunk clearing cams in the other tier that will clearl the ordinary needles, stepped clearing cams adapted to clearthe ordinary needles and the thread, and means for clearing the joining needles every alternate course, substantially as described. y

2.v In a circular knitting kmachine for making vertical striped fabrics,

thread-feeders, ordinary needlesarranged in groups those in alternate' groups all having upper butts and those in the remaining groups all lower butts,

with both' upper and lowerv buttsshorter than those olf-the ordinary needles, needle operatling cams arranged alternately in the upper and. lower raise the joining needles high enough to take 11e the combination reciprocating joining needles at the 12 tiers in the cam ring, knitting cams in both 121 tiers that will operate bot-h the ordinary and joining needles, sunk clearing cams in one tier that will clear the ordinary needles, sunk clearing cams in the other tier that will clear the ordinary. needles,

stepped ia thethread, and a tumbler cam pivoted in eech'ofsaid stepped Qle'aring cams adapted4 clearing cams adapted to clear the ordinary names to this specification in the presence of needles, and raise the joining needles to take two subscribing wltnesses.

WILLIAM HENRY BLACKBURN. RICHARD BLACKBURN.

t9 raise and clear the Joining needles every alternate course, substantially as described. lIn testimony whereof We have signedour Witnesses:

J. H. G. BAYLEs, A. TATTERSALL.

Cpies of this patent may be obtained for iive` cents each, by addressing the "Commissioner of Patents.

' Washingtan, D. C.

Images