US1758716A - Attachment for spring-beard knitting machines - Google Patents

Description

May 13, 1930. P. G. PERKINS ATTACHMENT'FORSPRING BEARD KNITTING MACHINES Filed Oct. 10, 1928 2 Sheets-Sheet l m M W W26. WWW

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P. G. PERKINS ATTACHMENT FOR SPRING BEARD KNITTING MACHINES Filed Oct. 10, 1928 2 Sheets-Sheet 2 awe/n ce;

Patented May 13, 1930 UNTE PAUL G. PERKINS, F SAUQUOIT, NEW YORK ATTACHMENT FOR SPRING-BEARD KNITTING MACHINES Application filed October 10, 1928.

My invention relates to an attachment for spring beard knitting machine and I declare the following to be a full, clear, concise and exact description thereof sufiicient to enable anyone skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings in which like reference characters refer to like parts throughout the specification.

The object of the invention is to provide an attachment for spring beard knitting machine that will allow the burr wheel, which feeds the yarn to the needles, to yield in the event a needle becomes bent or otherwise 1 defective or as when a slug or other defect in the yarn lodges in the beard 0f the needle.

Such a yielding tendency on the part of the burr wheel will prevent the needle being broken and thereby cause a defect in the knitted goods.

The object will be understood by referring to the drawings, in which:

Fig. 1 is a perspective view of the attachment shown in connection with the pertinent parts of spring beard knitting machine.

Fig. 2 is an end elevation of the attachlnent.

Fig. 3 is a central vertical section of the attachment.

Fig. 4 is a perspective View of the attachment shown in connection with the immediate parts of the spring beard knitting machine which is in fragment.

Fig. 5 is a section taken on the line 5, 5 of 35 Fig. 4.

Refer-ring more particularly to the drawings, the cylinder of a spring beard knitting machine is shown at 5 and the spring beard needles at 6. The attachment embodies a bracket 10 having a sleeve 11 that is made integral therewith and disposed at right angles to the part 12 of the bracket. Part 13 of the bracket is at right angles to part 12 and integral therewith. The free end of part 13 is bifurcated or is formed with an open rectangular recess 15 within which is pivotally mounted at 16 the rock member 17.

The lower part 18 of rock member 17 is cylindrical. It is reduced somewhat at 19 and 50 again at 20. A head 21 is driven onto reduced Serial No. 311,687.

27 is wound about the shank of set bolt 30.

Set bolt 30 is screw threaded to adjustable collar 31 and projects therethrough to engage the surface of adjustable arm 32, whereby to hold collar 31 is predetermined position along the cylindrical part 33 of adjustable arm 32. Coiled spring 27 will tend to rock member 17 on its pivot 16 by exerting a pull on the upper part 25 towards set bolt 30. Member 17 will be prevented from rocking past the full line position illustrated in Fig.

1 by the end edge 40. of adjustable arm 32. The edge 40 of arm 32 which has a flat portion at 41 is adapted to abut against the lateral surface of rock member 17, whereby to arrest the swinging of member 17 on its pivot 16 therebeyond. Arm 82 is held in predetermined position by set screw 45 and Washer 45 that projects through an elongated recess 43 made in the flat part 41 of arm 32 and is screw threaded to part 13 of the bracket 10. It will be observed, therefore, that rock member 17 will rotate in one direction only to allow burr wheel 24 to yield or move into dotted line position shown in Fig. 1 when a force is applied thereto as when a bent needle comes in contact with the surface of the burr wheel 24 or when a slug 0r defect in the yarn gets caught in a needle 6, rather than cause the breaking of the needle 6 as would happen if the burr wheel 24 was held rigidly in position without yielding.

I The attachment is held yieldingly in operative position, whereby burr wheel 24 will engage with needles 6 by a rod having a loose bearing in bracket 51 bolted to the frame 52 of the knitting machine at 53.v Bearing 54 made in bracket 51 is an elongated aperture, whereby to allow for the vertical. adjustment of rod 50, and, therefore, of the attachment. Rod 51 also projects through an aperturein adjustable block 55' that is held to bracket 51 by bolt 56. Bolt 56 projects through said elongated aperture 54 which is narrower from 57 downward to accommodate the smaller diameter of bolt 56. Aperture 54 will allow bolt 56 to be moved in a vertical manner, whereby to adjust the vertical position of block 55. Block 55 has formed integral therewith a hollow casing or sleeve 60 adapted to house a portion of rod 51 which extends through the center thereof and therebeyond through bushing 61, adjusting nut 62 and lock nut 63. Bushing 61 is held in given relation to sleeve 60 by set nut 65, which has a threaded bearing in the enlarged part 66 of sleeve 60 and is adapted to engage the flat surface of the reduced forward part 67 of bushing 61. Said part 67 is substantially rectangular in cross section. The aperture made in bushing 61 for the projection of rod 51 is sufficiently large to clear the surface of said rod 51. The inner end of bushing 61 forms a shoulder against which one end of coiled spring 70 rests. The opposite end of coiled spring 70, which surrounds a part of rod 51, rests against collar 71 fastened to or made integral with rod 51, whereby the force of coiled spring 70 will tend to push rod 51 to the right. This direction of rod 51 will cause the attachment to hold burr wheel 24 in contact with the needles 6. The position of burr wheel 24 with reference to needles 6 can be controlled by manipulating adjusting nut 62 and lock nut 63.

The usual well known wheel for pressing the cloth as it comes from the needles 6 down ward is represented at 80 and has a hollow sleeve 8O made integral therewith and adapted to turn on a shaft 81 formed as part of adjustable bracket 82. The end of bracket 82 is bent at right angles at 82A and held to bracket 51 by bolt 83 projecting through elongated aperture 84 in bracket 51, whereby to allow for vertical adjustment. Hollow sleeve 80 is held to shaft 81 by washer 85 and screw bolt 86. The usual well known arn uide is shown at 87.

In operation the arm 32 will be set to given position, whereby to limit the throw or rotation of member 17 and likewise the tension of coiled spring 27 will be adjusted to given tension. Yarn 88 is carried by burr wheel 24 and is forced up into the spring beard 89 of needles 6 as said needles 6 move therepast on the rotatable cylinder 5 of the knitting machine. In moving past burr wheel 24 the beard part 89 of needles 6 will move between the burrs 90 of burr wheel 24 as is usual in knitting machines of this type. However, should a needle become bent so as not to take its normal course through the burrs 90 of wheel 24 but on the other hand come in contact with the outer edges of burr wheel 24 said burr wheel 24 will yield rather than break said needle with the resultant defect caused in the cloth. A. broken needle will cause a flax in the knitted clot-h. F urthermore, the breaking of one needle is liable to cause the breaking of successive needles as they come in contact with said burr wheel 24, all of which will be prevented by the yielding burr wheel 24. Moreover, should a slug or defect in the yarn 88 clog in the beards 89 of needles 6 and get caught in the burrs 90 of wheel 24, said wheel 24 will yield as in the former case with a bent needle 6 rather than break the needle 6.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is as follows:

1. In an attachment for spring beard knitting machines, a yielding mounted bracket having a bifurcated end, a rock member pivotedly supported at said end, a burr wheel mounted to slide on said rock member, an arm mounted on said bracket and having a slot therein, a screw bolt projecting through said slot to hold said arm to said bracket in an adjustable manner, a spring connecting said rock member with said arm, and said arm adapted to hold said rock member against the tension of said spring.

2. In an attachment for spring beard knitting machines, a bracket, a rock member pivotedly supported by said bracket, a burr wheel carried by said rock member, an adjustable arm adapted to make contact with said rock member, whereby to limit the movable arc of said rock member and a spring connecting with said rock member and with a collar mounted on said adjustable arm, whereby to hold said rock member in predetermined position.

3. In an attachment for spring beard knitting machines, a bracket having a bifurcated end, a rock member pivotedly supported at said end, a burr wheel mounted on said rock member, an adjustable arm mounted on said bracket, a spring connecting said rock member with a collar mounted on said adjustable arm, and said adjustable arm adapted to make contact with said rock member whereby to hold it against the tension of said spring.

In testimony whereof I have aflixed my signature.

PAUL G. PERKINS.

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