|Publication number||US459866 A|
|Publication date||Sep 22, 1891|
|Filing date||Dec 30, 1890|
|Publication number||US 459866 A, US 459866A, US-A-459866, US459866 A, US459866A|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (21)|
|External Links: USPTO, USPTO Assignment, Espacenet|
' A .2 Sheets-Sheet 1.
F. CLEWLEY. KNITTBD BAG AND PRGGESS 0F MAKING- THE SAME. N0. 459,8v66. l .Patented SeptpZZ; 1891.
c ff Q Ff a frei-@ I Nrrn i States FRANK CLE WLEY,
I'IAInF OF PHILADELPHIA, PENNSYLYANIA, ASSIGNOR OF ONE- TO HUGH MCGILL, F SAME'PLACE.
KN'ITTED BAG AND PROCESS F MAKING THE SAME.
SPECIFICATION forming part of Letters Patent No. 459,866, dated September 22, 1891.
` Application filed December 30, 1890. Serial No. 376,20?. (No model.)
knittingmachine provided with a double row.
of needles. At intervals I interknit the two opposite sides of the tube, so as to join them r with a seamless transverse joint. Then the tubular formation is continued and at the desired interval the two sides are Aagain interknit, as described, and the tubular formation again continues, and so on indefinitely. The zo product is a long tubular fabric crossed at intervals by interknittings of the sides. This fabric can then be formed into separate bags by cutting it across below each of the transverse interknitted joints, each joint thus forming the 'bottom of the bag. By increasing the lengths of the needle-rows bags of greater width can be produced, or a number of the tubular strips of knitted fabric with transverse interknittings can be simultane- 3o ously knitted upon the long needle-rows.
In the drawings, Figure l is a vertical crosssection from front to back of part of a straightknitting machine provided with two rows of needles, showing the two lines of warp- 3 5 threads and a spool with its thread for joining the side edges of the flat strips formingy the tubes. It also shows the thread-guides. Fig. 2 is a front view of the same. Fig. 8 is a plan view of one of the cut-off bags, looking 4o into it, and showing the two sides thereof slightly separated, and also showing the' formation of the transverse joint. fig. is a broken perspective view of two adjacent needies of each row, showing them taking the .t5 warp-threads to form the tubular sides. Fig. c, `5 is a similar view showingr them taking the warp-threads when forming the transverse dirterknitted joint. Fig. 6 is a similar view showing two of "theopposite needles taking 1, Sdffa side thread to join t-he two contiguous vertical edgesdfthe fabric to unite them in forming the dat tube. Fig. is a vertical crosssectional view from front to back of one of my tubes before it is cnt into bags, showing the cross-joints. Fig. 8 is a side view show- 55 ing the fabric composing the finished tube. Fig. 9 is a side view simply showing one form of loop for the vtubular fabric, showing the loops loosely connected. Fig. l0 isaplan -view showing the ends ofthe two flat strips 6o not united. Fig. 11 is a similar view showing the two flat strips with their two vertical edges'joined. Fig. 12 is a plan-view of the transverse seam, showing, for illustration, the loops loose and not drawn closely together. Fig. 13 is a detached perspective view of one of the bags immediately after being' out oft' from the tube. Fig. It is a similar view showing the cut-od part turned inside out to form a bag ready for use. 7c.
It will-not be necessary to enter into a detailed description of straight-knitting machines, as they are well known to those skilled inthe knitting art. I will therefore set forth only so much as is necessary to describe my invention. l
A B are two rows of needles on the straightknitting machine.
C C are the two beams carrying the warpthreads D D. 8o E E are guides t-o carry the warp-threads around the needles.
F is a supplemental or independent spool to carry a thread G, which passes ythrough a guide G', one of which spools and guides is 85 located upon each side edge of the width of material to be formed for a tube, su fiicient o1' the warp-threads being inclosed between two of such spools as will serve to furnish material for a width. The numberof these spools 9o and guides G can be increased (six being shown) to increase the number of tubes which it is desired to knit across the face of themachine'.
J J are the needle-latches, and K K the lifts for holding the needles, which are raised and lowered by the lever L, pivoted at its middle L.
H H are the two opposite strips of knitted fabric, which are united at their edges by the threads G G from spools F F.
I I are the transverse interknitting-stitch es.
The spools F F turn independently of the IOC beams C C', as their threads are drawn more rapidly from them than the warp-threads are from the beams. The warp-threads being in position in each row of needles, the machine is started and the knitting of the two fiat layers of fabric begins. While the warp-threads D D engage, respectively, their needles A and B, each thread G is carried by its guide G', so. as to engage both of two opposite needles A and B (see Fig. 6) at theselvages of the two warp fabrics continuously and knits them together at their selvages of the two fabrics, thus forming the tube. N ow when a length of fabric long enough for the desired depth of bag is formed the guides E are au-4 tomatically carried across so as to make one loop of warp D over needles A, and the guides E are next carried across so as to make 011e loop over needles B, and this reciprocation of the stitches is sustained until the two opposite fabrics are-thoroughly united'in aninterknitted joint. The regular formation of the tube is then resumed until a suicient length for a bag is again attained, when the cross-knitting -is again resumed, and so on indenitely. If I desire toform anuinberof tubes simultaneously, I Asimply leave intervals between warp-tlireadsfthat is, I omit a few at.
intervals-.and interpose spools F, two of the latter' for eachsection of tubing to be formed.
Thus I can make a numberof tubes and bags simultaneously upon one machine. 4 After the tubes are formed. they are cut off below 'the cross-joint, as shown vin Fig. 13, and turned inside out, as shown in Fig. 14, read y for use. A
the tubular construction,
The interknitting of the two fabrics crosswise forms a cross-seam at intervals of the tube.
I do not confine myself to the special form of loop shown, as various forms of loop can be used, as will be readily understood by any skilled knitter.
l. The method of knitting bags, consisting of simultaneously knitting two sides thereof and interknitting their selvages and at intervals in the formation of the tube so formed transversely joining the two rsides thereof by inter-knitting the same, and` then continuing substantially as described. v
2. A tube for the formationA of bags, consisting of two fiat knittedsides H H, interknitted at their selvages and transversely in= terknitted at intervals one with thejother and adapted to be eut at or' about the transverse joints thus formed to make bags,rsubstau 3; A tube for the formation of bags, consisting of two flat knitted4 sidesH H interknitted at their selvages, said two flat sides l being cross-seau1ed at intervals one with the other and adapted to be cut ator about the said transverse seams to form bags.
In'witnessthat the above is my'invention 65 Ifhave hereunto set my hand. V
Witnesses: GEORGE E. .BUCKLEY,' THOMAS DOWLING.
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