US 2533731 A
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Dec. 12, 1950 J. GOMBERG BOBBIN FOR KNITTING YARN AND THE LIKE Filed June 3, 1949 INVENTOR. ([4005 Gamma HT7'0RNEY Patented Dec. 12, 1950 UNITED STATES PATENT OFFICE BOBBIN FOR KNITTING YARN AND THE LIKE Jacob ,Gomberg, Chicagmlll.
Application June 3, 1949,, Serial'No. 97,031
31 Claims. 1.
This invention relates to bobbins upon which a worker in needlecraft may wind a supply of yarn, thread or. the like in order that the worker may draw, from such supply, the amount of material required as the work progresses.
In the drawings Fig. 1 shows the bobbin in full Fig. 2 is a section on the line 22 of Fig. 1; Fig. 3 is an end view of Fig. 1; Fig. 4 is an opposite face view; Fig. 5 is a detailed sectional View, and Fig. 6" is a similar view of the opposite side to that shown in Fig. 5 with a greater separation between the parts in order to show some of the details of construction.
The bobbin consists of two members i and 2, which are circular and generally disk shaped. Each of the members, i and 2, is provided with a peripheral lip 3, which lips are spaced apart. Each of said members i and 2 is also provided with a peripheral rim Q--5, which rims contact under certain conditions of adjustment of the members I- and 2. The member I is provided with a sleeve (5 and the member 2 with a. hub T, the hub T fitting within the sleeve 5, whereby the two members i and Z are maintained for relative axial and transversemovements. The sleeve 6' is provided with two oppositely arranged slots 89, which slots'communicate with the outside central portion of the-member l. The central portion of the member is provided with: two
raised or-ca-m surfaces iii-4i positioned. on opposite sides of the outside ends of the slots 89. The hub 1 is provided, at its free end, with a pair of outstanding lugs l2i3 and at its base with two pairs of spaced ears i-l5 and iii-IT, which lugs are in line with thespace between the two corresponding sets of ears i l-95 and |'6 '|T'. The sleeve- 6 is provided with two sets of upstanding fingers i3-i9 and Efi-Zl positioned at the edges of the slots 8-9. The raised portion or cam iii has itsthin edge. 2'2. facing the slot 2, which thin edge is however spaced from the slot 3 providing a flat ledge 23. The thick portion of the cam it: is substantially flush with the nearest edge of the slot 9. The thin edge 24 of the raised portion or cam H faces the slot 9; which thin edge is however spaced from the slot 9 providing a flat ledge 25. The thick portion of thecam H is substantially flush with the nearest edge of the slot 8. The device is assembled and operated as follows.
The members i and 2 are assembled by inserting the lugs I2-I3 into the slots 8-9 and pressing the members i and 2 toward each other. The rims 4-5 in this position will not contact inasmuch as the fingers 18-49 and 2li-2l contact the ears I4'l5 and iiH-, thereby retaining the rims in slightly spaced relation, as shown in Fig. 5. The lugs l.2l.3, when the parts are in this; position, have passed entirely through the slots 89 and overlie the planes,- in which the ledges 23-25 are positioned. The members I and 2 are then given a slight rotary motion which causes the fingers |'8--l' 9- and 2lI-2l to move off of the ears i 4'-l 5 and I l-T andat the same time permits the lugs i-2--!3 to pass freely over the ledges 23-25 and' ride up upon the raised portions: or cams Hie-H The lugs l'2-I-3- will continue to-travel under the rotary motion of the-members i' and 2 in contactwith the cams until the rims i-5'a-re in contact; llhe position of the parts thus described may. be termed the closed or normal relation of the parts. The user of the device, when she' desires to wind, for instance yarn, thereon, t'o-make. it available for knitting, must manipulate the. de:- vice in order to separate-the rims i'5l and provide a peripheral slot. through which the yarn may be wound around the sleeve 6. Theuser, in order to provide suchslot, gives the two members I and 2 relative motion, so.v moving them asfar'as possible, or until-one of. thefingers of the sets I8-2I contact one of the: ears Hit-I11. During such manipulation the rimsv 4e.5: will contact, and the lugs |-2l3 will move from: a high spot on the camsto-positions over thezledges 2325,- assuming a position in spaced relation to such ledges. Outward pull on thetwo: memibers-l and 2 will permit a separationof therims 45 until the lugs I2l3 contactv the ledges 2-32-5, thereby causing the rims. zl.5 to assume a spaced position and opening up a peripheral slot between the rims. (See Fig. 5..) Contact of the lugs I2l3 with the.1edges.23r25 will retain the members i and 2 inv the spaced relation and secure them against separating entirely. The operator may then wind the yarn through the slot formed by the rims 45 in such amount as desired, (see Fig. 2), but not beyond the flat portion of the members I and. 2: which is indicated by the word Full in Fig. 1. It is important that the yarn be wound very loosely, thatis, withoutany tension whatsoever. In'the first place, it is desirable'in winding yarn that pulling strain should not be exerted as such strain tends to damage the yarn, and further, insofar as the operation of the bobbin is concerned, it is necessary that the yarnbe so loosely wound in order that the convolutions: may be pressed toward each other whenthe device is subsequently closed. This could not be done if the yarn were wound tightly in the bobbin.
Theuser, after the desired amount of. yarn has been Wound into the bobbin, severe the yarn from the source of supply and permits the. free end of the-yarn, wound in the bobbin, to protrude slightly beyond the-edge of'the lips 3'. (See Fig. 2.) It is now desirable to close the device in order that the free end of the. yarn is rasped between the rims 45.- This is accomplished by pressing the members I and-2' toward each other, which causes the convolutions of yarn to be pressed" toward eachother. The user then rotates the members I' and 2=asfar astheywill go, which causes the lugs l2l3 to pass from their positions tact, as explained in connection with the normal position of the parts, but will be separated a distance equal to the thickness of the portion of the yarn which is grasped between the rims. It is therefore apparent that the distance apart of the rims 4-5 is determined by the thickness of the yarn. The grasp of the yarn between the rims 4-5 permits the bobbin to be handled by lifting or hanging it from the yarn which extends .beyond the rims.
A multiplicity of such bobbins maybe used in "doing knitting. Thus, for instance, in knitting multicolored argyle socks, a number of such bobbins, each carrying a difierent colored yarn may be utilized and as the knitter requires a particular colored yarn, it may be withdrawn from the proper bobbin by holding that portion of yarn, which is connected to the work which is already knitted, with one hand and supporting the bobbin with the other hand and rotating it in order to draw the required amount of additional yarn through the narrow slot as shown in Fig. 2. In the alternative, the bobbin may be manipulated to space the rims 4-5 apart, the required amount of yarn withdrawn and the bobbin then looked to agan grasp the yarn.
The winding of the yarn into the bobbin may be carried out by holding one end of the yarn over a lip 3 and then, while so holding the yarn, make a few windings to anchor the yarn and then release the held end, inserting it through the slot and continue winding, whereby the free end will ultimately be included in the winding. In the alternative the two halves of the bobbin may be entirely separated, the end of the yarn may then be laid into and across the slots 89, the other member, then assembled, by inserting the lugs l2l3 into the slots 89, whereby the yarn at its end portion is thrust through to the outside of the member carrying slots 89, whereby such end is anchored in place and winding continued as heretofore explained.
The knitter, after experience with the use of the bobbin, will develop the ability to place just enough bite on the yarn to permit withdrawal of yarn by jiggling the bobbin from the portion of the yarn immediately protruding from the lips 3.
The invention has been described in connection with knitting, but it is evident that the bobbin may be utilized to make available a supply of other yarns, threads and cords.
The bobbins of this invention may be molded from polystyrene, vulcanized rubber or any material which will not warp or shrink, inasmuch as materials which tend to warp or shrink lose their contour and cause the rims 5 to move out of contact and out of alignment. 7
When yarn is wound between the members i and 2 and the two members are pressed together, thereby compacting the yarn between them, the resiliency of the yarn tends to act as a spring exerting suificient outward pressure to keep the lugs l2-l3 in contact with the cam surfaces l0l I.
The device has been shown utilizing two lugs 82-43 and two cams lO-l I, but may be made with but a single cam and a single lug, for instance, the lug l2 and the cam It]. In such a modification, the rims on that side of the device which is provided with the lug will close to the extent shown in Fig. 2 and grasp the yarn, but the portion of the rims on the side on which there is no lug and no cam will not tend to grasp the yarn and the yarn will run freely therethrough until it reaches the portion of the rims under the influence of the cam and there catch and hold.
1. In a bobbin for holding wound yarn, or the like, in combination, a pair of oppositely disposed members mounted to axially move in respect to each other, spaced apart peripheral lips on said members, peripheral rims on said members below said lips, a sleeve on one of said members, a hub on the other member, said hub fitting within said sleeve, slots in said sleeve communicating with the outside of the member carrying said sleeve, a pair of oppositely inclined cams, one of each of said cams being disposed at opposite sides of the outside edges of said slots, a pair of outstanding lugs, at the free end of said hub, slidable in said slots, and when said members are assembled and axially moved, having relative movement with respect to said cams, a pair of upstanding fingers at the inner edges of said slots, two pairs of spaced cars at the base of said hub, said fingers, when the members are assembled and the rims are in contact, lying in the path of movement of said ears.
2. In a bobbin for holding wound yarn, or the like, in combination, a pair of members axially arranged for relative movement in the path of an arc, and toward and away from each other, one of said members being provided with a cam surface, the other member being provided with a lug, said lug when the members are moved in one direction in the path of such arc, riding over said cam and moving said members toward each other, said members when said lug is free of said cam being separable to form a peripheral slot therebetween.
3. In a bobbin for holding wound yarn, or the like, in combination, a pair of members axially mounted for relative movement, one of said members being provided with a slot extending through each other.
REFERENCES CITED The following references are of record in the UNITED STATES PATENTS Number Name Date 1,215,525 Hansen Feb. 13, 1917 2,301,920 Sadler Nov. 1'7, 1942 FOREIGN PATENTS Number Country Date 186,485 Great Britain Oct. 5, 1922