US 2066974 A
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Description (OCR text may contain errors)
Jan. 5, 1937. I T. HINDLE ET AL PAPER MAKERS DRIER FELT Filed Sept. 23, 1935 lllvlllllllllllllllll .TIIIIII/IIIIIIIIA m 'IIIIIIIIIII 71111111111!!!" IIIIIIIIIIIlI/I- llkll llllllli lllllll.
m A 18L 2 y a 8F fie fi R C@ a 3 0 v 0 w nu 0-5 a 0GB 4 WM fin l F Patented Jan. 5, 1937 PAPER MAKERS DRIER FELT Fries Thomas Hindle and Sam Lord, Blackburn, England Application September 23, 1935, Serial No. 41,794 In Great Britain September 27, 1934 2 Claims. (Cl. 24-33) This invention relates to paper makers drier felts and more particularly to improvements in the construction of the seams of such felts.
According to the invention a loop is formed at each end of the felt by folding the ends over and securing them down, slots running longitudinally of the felt being formed at intervals apart in the abutting edges of the loops, the slots in one loop coinciding with those in the other loop, and a rod of relatively small diameter being inserted in each loop the two rods being attached together by fiat links at the points where they are exposed through the slots so completing the construction of the seam.
The invention willbe described with reference to the accompanying drawing in which:-
Fig. 1 is a perspective view showing a portion of each end of the felt before being connected together.
Fig. 2 is a perspective view showing a portion of each end of the felt after being connected together.
Fig. 3 is-a section on line 3-3 Fig. 2 drawn to an enlarged scale.
5 Figs. 4, 5 and 6 are perspective views of different forms of flat links for connecting the rods in the two ends together.
Fig. 7 is a plan partly in section illustrating a form of the invention in which the transverse 30 bars are secured at the edges of the felt.
Fig. 8 is a detail view showing the end of the rod.
Fig. 9 is a plan partly in section illustrating another form of the invention in which the trans- 5 verse rods do not extend right to the edges of the felt, the last few inches at each side being secured by H or similar fastening devices such as described in the specification of our U. S. Patent No. 2,010,302.
40 The felt is produced from a single length of material the two ends thereof being attached together to form an endless band.
A loop a is formed in each end A of the felt by folding each end over on itself and securing 45 it by one or more rows of stitching (1 the loop so formed being preferably from one to two inches deep. Longitudinal slots a are formed at intervals across the fold end of the felt, the slots in one end coinciding with those in the other 50 end. These slots are spaced apart at intervals of about three inches. The longitudinal slots a are formed by punching or cutting out the material of the felt and are approximately a quarter of an inch wide and three-quarters of an inch 55 long. They may be formed as shown in both the upper and lower layers of the felt forming the folded loopa or alternatively only the upper or the lower layer may be slotted.
A rod B of small diameter is inserted in each loop a such rod being of metal or other material of suitable strength and flexibility, the preferred material being a corrosion resisting metal of suitable strength.
Various constructions of links may be employed for attaching the two rods together. In the con- 10 struction shown in Fig. 4 each link C is in the form of a short flattened tube of a length to fit into the slot 0. in the loop a and with the central aperture of sutficient size to accommodate the two rods B. In forming the seam with the links 15 0 they are threaded on one rod B as it is pushed through one loop a from one side of the felt, the two looped ends of the felt are then brought together and the second rod B pushed through the second loop a during which operation the links C 26 are brought successively into position in the slots so that the second rod passes through them. The links C may be formed from tube or wire, or may be cast, or may be machined from a solid bar.
In the construction shown in Fig. 5 the links C are formed with an eye 0 at one end through which one bar is pushed and a hook c at the other end adapted to be clenched over the second bar after the latter has been inserted in the second loop a. 30
In the construction shown in Fig. 6 each link G is formed with a hook c at both ends. With this construction of link both rods B are pushed through the loop a and the links C placed in the slots a and their hooked ends clenched over the rods.
Whichever construction of link may be employed for completing the seam it is preferable that the thickness of thelinks should be less than the thickness of the looped end of the felt so that they will not extend beyond the top and bottom surfaces of the felt.
The rods B may extend from edge to edge of the felt as shown in Fig. "I in which case only the links C, C or C are employed for connecting them together and the rods are prevented from moving transversely of the felt and protruding from the edge thereof when the felt is running by forming or bending one end into an eye or loop I) see Fig. 8 and sewing or otherwise attaching this eye or loop to the felt.
Alternatively the rodsBmay be shorter than the width of the felt and the last one or more fasteners D at each edge be of the type described in the specification of our prior U. S. Patent No.
2,010,302 i. e. of H shape inserted into narrow longitudinal slits a in the looped ends of the felt, such an arrangement being shown in Fig. 9.
A seam constructed in accordance with this invention provides a seam of great strength and flexibility. Moreover when a felt is running on a paper making machine, the centre tends to creep ahead of the sides with the result that the seam assumes a bowed formation and by using two rods of circular cross section in the construction of the seam they will accommodate themselves to such bowed formation without cutting or otherwise harming the felt.
What we claim as our invention and desire to protect by Letters Patent is:
1. A paper makers drier felt formed from a single length of material constructed with a loop at each end of said length formed by doubling the felt over on itself, a plurality of slots running longitudinally of the felt formed in the edge of each loop at intervals across its width the slots in one loop coinciding in position with those in the other loop, a separated rod of relatively small diameter inserted in each loop and flat links of less thickness than the looped end of the felt surrounding the two rods and connecting them together at the points where they are exposed through the slots thereby forming a seam joining the two ends of the felt in which the links are raised above the lower surface of the felt.
2. A paper makers drier felt formed from a single length of material constructed with a loop at each end of said length formed by doubling the felt over on itself, a plurality of slots running longitudinally of the felt formed in the upper surface of each loop at intervals across its width the slots in one loop coinciding in position with those in the other loop, a separated rod of relatively small diameter inserted in each loop and fiat links of less thickness than the looped end of the felt surrounding the two rods connecting them together at the points Where they are exposed through the slots thereby forming a seam joining the two ends of the felt in which the links are raised above the lower surface of the felt.
THOMAS HINDLE. SAM LORD.