US1007264A - Attachment for knitting-machines. - Google Patents

Description

H. BIRNBAUM. ATTAOMENT POR KNITTING MACHINES.

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H. BIRNBAUM.

ATTACHMENT TOR KNITTING MAGHTNBS.

APPLICATION FILED JULY 5, 1910.

Patented Oct. 31, 1911.

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ATTACHMENT FOR KNITTING MACHINES.

APPLICATION FILED JULY 5. 1910` Patented 001;. 31,1911.

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HENRY BIRNBAUM, OF NEW YORK, N..Y.

.ATTACHMENT FOR KNITTING-MACHINES.

Specieaton of Letters Patent.

Patented oet. 31, 1911.

Application led July 5, 1910. Serial No. 570,525.

To all whom, it may concern:

Be it known that I, HENRY BIRNBAUM, subject of the Emperor of Austria-Hungary, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Attachments for Knitting Machines, of which the following is a specilication.

My invention relates to .knitting machines or similar mechanisms, and particularly to an attachment therefor mounted upon the carriage of the knitting machine and constituting a cover or casino for the banks of the needles, and carrying 2brushes contacting with the upper faces of the needle plates.

The object of my invention is twofold.

One object is to entirely cover in and protect the needle plates and the upper portionsl of the needles from dustand dirt, and to preventflutf or lint from being blown otf of the needle bed and disseminated in the air,

A and also to prevent fluff or lint from other machines from falling on to the needle beds in use; and the other object is to brush this tlutf or lint off of the needle plates at each reciprocation of the carriage so that the iiuff shall not accumulate in the spaces between" the needle plates and obstruct the operation of the needles and voverlie and obscure the needles so that broken or defective needles can not be observed, a very common occurrence in the operation of knitting machines, and one which causes defective goods to be turned out.

A relatively minor object is to provide a cover or casing which is provided with transparent panels whereby the operation of the machine may be observed, and which is composed of sections capable of being opened to permit an adjustment or repair of any part, or the proper manipulation of the threads or yarn, and which is normally held closed by a latching device.

The invention comprehends in its general features a two-part, sectional cover formed of pairs of shields mounted upon and movablev with the usual carriage of such.'y length as to cover in or extendover the needle banks in any position of the carriage, each half section of the cover being supported on springs which tend to open the cover secvdraefyings shown my invention applied to a straight-knitting machine such as is used in P qknitting cardigan or jersey cloths.

Insaid drawings z-Figure 1 is a top plan vv'view of so much of a straight-knitting machine as is necessary to illustrate my inven- 'tion and showing my invention as applied thereto, the knitting machine being shown conventionally.,.v Fig. 2 is a side elevation of the parts shownin Fig. l. Fig. 3 is anenlarged detail s eotion about full size on the line 3-3 of Fig. l. Fig. 4 is a transverse detail section on the same scale as Fig. 3 and taken on the line 4 4 of Fig. l. Fig.

-5 is a fragmentary perspective view of one end of the cover and the latching device. Fig. 6 .is a side elevation partly in section of the parts shown in Fig. 5.

Referring now particularly to Figs. l and 2, 2 designates the bed of a straightknitting machine of any usual type having the usual oppositely Y disposed, upwardly' inclined needles, and the oppositely disposed, up-

wardly and inwardly inclined banks o1 needle plates 4 between which the needles operate, the row of needle plates on one side of the machine and the needlestherebetween being spaced from the row of needles and needle plates on the other side of the machine to permit the passage of the knitted fabric between the banks of needles and needle plates. 5 designates the oppositely disposed, longitudinally extended sidebars of the usual reciprocating carriage, the bars being connected at their ends by integral portions which are curved downward below the plane of the carriage. The thread guide 'T is mounted on the carriage midway be- Y. of the latch bar 30 that the upper end ofthe latch bar will be moved away from the cover section and against the force of the spring 33. As soon as the detents 37 havereleased 4their engagement with the cover sections,

the springs 24 will act to throw the cover sections open. It will be obvious that one of the cover sections may be held by hand at the same time pressing upon the latch bar 30 as above described, and thus that only the other cover section may be released. lVhile I have found that this form of latching device is very convenient in operation, and very simple in construction, Ido not wish to limit myself to this as it is obvious that other latching devices might be provided acting practically in the same manner without departing fromthe spirit of the invention.

A considerable'source of trouble in knitting machines is due to the fact that lint and fluit become deposited upon the upper edges or faces of the needle plates and fills the spaces between these plates so as to hide the needles between the plates and prevent the operator observing whether these needles are broken or unbroken. As a consequence, oftentimes the operator does not notice that any particular needle is defective, and it is only after many rows of stitching have been made that the defect will benoted by the defect in the fabric turned out. In order to avoid this, I have provided oppositely disposed pairs of brushes, one brush for each of the cover sections, so mounted upon the cover sections as to reciprocate with the cover sections and-with the carriage, the

bristles of these brushes extending down into contact with the upper faces of the needle platesv and cleaning the same ofufl' and lint at each reciprocation of the carriage. This construction is shown particularly clearly in Fig. 3. The bristles 40 ofeach brush are supported in bristle clamps 41 consisting of two opposed plates 41 and 42` the plate 41 forming part of a supporting bracket 43, the plate 42 beingclamped against the plate41 byg means of bolts and nuts 44. The bracket 43 extends outward,

then upward to a point above the side bar 16 of, the cover section frame, and then eX- tends toward the free edge of the adjacent cover section, as at 45. .Any suitable means may be used for attaching the brackets 45 to the frame bar 16, and the brackets may be attached .permanently to vthe frame bars if desired.. n,Preferabl however, in order to provide for cases 1n which relatively narrow.

goods are being woven, and where the reciprocation of the frame is therefore less than the full amount and so requires an adjustment of the brushes, I mount the brackets 43 adjustably upon the bars 16.

be eective in practice is to form the upper face of the frame bar 16 with a longitudinally extending groove 46 having undercutv side edges. A bolt 47 passes through the upwardly extending terminal end 45 of the bracket 43, and this bolt is provided with a head 48 at its end having beveled side edges adapted to engage beneath, the undercut edges of the groovev 46. This head is thereby adapted to slide longitudinally along the groove and to beheld in any adjusted position by a wing nut 49 engaging with the bolt 47.

It is preferable that tlie brushes 40 shally be resiliently forced down into contact with v the needle plates 4, andfto this end I make the bracket 43 slightly yielding and interpose between the u-pper face of each bracket and the adjacent portions of the frame, the coil spring 50, this'spring.- being held in place by any suitable meansas by the upwardly projecting stud 51. It will be seen from Figs. 1 and 2 that the groove 46 is of such'length that the brushes maybe disposed at any' point desired upon the carriage. Preferably, and under normal circum- One manner of doing this which I have found toA stances wherel goods of-full width are being f knitted, the brushes are mounted at the inner ends of the cover sections. There will thus be a pair of brushes located on each side of the yarn-guiding devices. By this means I secure a brushing action over the whole extent of the banks of needle .pla-tes, which would not be the case if only onepair of brushes were used. Thus upon a movement of the carriage in one direction, one pair of brushes will move beyond the needle plates when the carriage has reached the full length of its travel, while the other pair of brushes will be in contact with the needle plates, while upon a movement'of'the car- 1.10

riage in the other direction, the lastnamed' pair of brushes will move over the whole face of the carriage and be carried beyond the same, and thelast pair will only be carried along a portionA of the length of the needle bed. Upon each reciprocation of the carriage, therefore, the brushes will actA to carry the Huff and lint from one end of the carriage to the other, brushing it off of the" upper faces of the. needle pla-tes and clearing the spaces therebetween and carrying the fluif and lint to the closed end of the` lil) sections to permit the ll mele;

dotted lines in ig., that the brushes will also be raised clear oit' the needle plates. rlhe brushes will thus not obstruct. any manipulation ot the needles 'which be necessary. y

lt will beseen that my invention is very simple and yet etl'ective in operation, and that it may be separately manufactured and attached to any standard form of knitting machine, while it may be easily modified to suit any special type ot' knitting machine. llt has heen found particularly good in practice in that. it tends to prevent any fouling of the yarn, ,lie-eps the ilutl' and lint "from being carried into the air of the room and thus into the lungs ot" the operators, and keeps the needle plates of the machines in such condi ion that the operator may at all times observe the action of the needles and note that the machine is properly working.

lill/hat l claim is:

l. The combination .with a knitting machine having` a banlcot needles and needle plates, and a movable carriage, ot a. cover formed in two laterally disposed sections, cach section being hingedl f mounted on the side of the carriage, and .said sections cxi'cnding over the needle plates and toward each other, springs acting to raise the cover needles to he manipulated, and means for latching the cover sections in a closed position..

The combination with a knitting machine having a bank of needles and need-le plates. and a movable can-ringe including opposite-lv disposed side members, ot a. cover toi-med of two sections, cach section being independently hinged to the side members ot' the carriage, said cover sections extending" over the. needle plates and toward each other, and each section being provided with a transparent panel whereby the needles may he observed, and means 'for bitching the cover sections in a closed position.

fl. 'lhc combination with a knittingr nia chine having a bank of needles and needle plates, and a movable carriage, said carriage being approximately ot a length about twice the length ot the bank of needles and being provided midway7 its length with thread guiding' devices, ot a cover composed of two pairs et cover sections, the pairs of sections being1 mounted upon opposite portions ot the carriage on cach side of the thread guiding devices, the sections ot each pair bfcinpl hinged to the adjacent portions ont' thegcai.' riagre and extending upward and over the needle plates, the said cover sections being provided each with a transparent panel.

4. lhe combination with a chine having a banl-z of needles and needle plates, and a movable carriage including longitudinally extending side bars, said carknitting 'maiper/,eee

i-iage having a length approximately equal to tzvice the length ot' the bank of needles, and thread guiding devices mounted at the middle ol the carriage, of a pair of cover sections disposed on each side of the thread guiding devices, each pair consisting' of oppositely disposed cover sections hinged to the side bars of the carriage and extending upward and inward toward. each other, each cover section being provided with a transparent panel, independent. springs acting to torce each of said cover sections open, and l bitching` devices acting` to hold the cover sections closed. i rllhe combination of a knitting` machine ha ving a bank ot' needlcs and needle plates, Va movable carriage and thread-guiding devices mounted upon the movable carriage midway the ends thereof, of'oppositely dis pcsed pairs ot cover sections located on each side of the thread-,guidingaT devices, the sections ot each pair being hinged to the side ba rs of the carriage and extending upward and toward each other, transparent panels located in the cover sections, springs acting to 'torce the sections of each pair of cover sections open, and latching devices located at opposite ends of the Aarriage, each consisting ot' a bitching; bar havingdctents engaging with the ends of the adjacent. cover sections. y i

tl. The combination with a knitting machine having a row ot'vneedles and needle plates and a movable carriage mounted in connection therewith, oie a cover section hingedly mounted upon the said carriage and extending over the row of needles and needle plates, and a brush mounted upon `the cover section and depending into contact with the upper tace of the needle plates, said brush being iiiovable with the cover section away from the needle plates when the cover' section is opened.

i'. The combination lith a knitting machine having oppositely disposed rows of needles and needle plates, and a movable carriage mounted in connection therewith, of oppositely disposed cover sections iingcdlv mounted upon the said carriage and extending over the rows of needles, and brushes mounted upon the cover sections and depending into contact with the upper l't'aces ot' the needle plates, said brushes be ling longitudinally adjustable.

8. The combination with a. knitting niachiiie having` oppositely disposed rows of needles and needle plates, and a movable carriage mounted in confnection therewith, and'having long jitudinally extending sido supported on the sidev hars and hiilgedly mounted so as to be raised out ol onturned down into contact with the needle plates,

bars, oi" oppositcly disposed pairs ol brushes- Seid brushes having bristles extending l dies, and brushes mounted upon said cover downward into Contact with Jdie upper faces sections and depending into olontaet with of the needle plates.- ,ille upper 'faces of the needle plaies.

e. The combination with a knitting ma- In testimony whereof, I ex my Signature 5 chine having oppositiely disposed rows' of H1 Pfff-S6110@ 0f WO WtneSSeS- needles and needle plates and a movalole HENRY BIRNBAUM. [Lr S] carriage opeiatlvely mounted 1n connection therewith, of oppositely disposed cover sec- Witnesses:

\ tionsliingly mounted upon said carriage HENRY S. SCHIMML, Y10 and adapted to extend over the rows of nee i EMIL G. HAAS.

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