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Netwrap feed and cut mechanismNetwrap feed and cut mechanism description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070101694, Netwrap feed and cut mechanism. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a Divisional of U.S. Ser. No. 10/719,460 filed Nov. 21, 2003, entitled NETWRAP FEED AND CUT MECHANISM, which is incorporated by reference herein in its entirety. TECHNICAL FIELD [0002] The principles disclosed relate to improvements to round balers used for harvest of agricultural crops. More particularly, the invention relates to improved reliability of the mechanism that feeds netwrap and controls tension of the netwrap to a formed cylindrical bale for wrapping the bale, as necessary to achieve a high level of reliability. The invention further relates to a feed mechanism that is configured to minimize potential negative influences related to crop material buildup and to minimize the potential for the netwrap material to be affected by the balers's pickup assembly. It further relates to the mechanism that severs the netwrap at the conclusion of the wrap cycle. BACKGROUND [0003] Many mechanisms have been developed for wrapping bales with netwrap, which is a sheet material typically in the form of light, very thin web material. Examples that utilize feed rollers are disclosed in R. M. Van Ginhoven et al U.S. Pat. No. 4,366,665; C. Clostermeyer et al U.S. Pat. No. 4,599,844; Krone et al U.S. Pat. No. 4,604,855; H. D. Antsey et al U.S. Pat. No. 4,697,402; J. L. Raes U.S. Pat. No. 4,729,213; DE 92 11 541; and J. H. Merritt U.S. Pat. No. 4,729,213 and commonly assigned Van Zee U.S. Pat. No. 5,129,208. The use of feed rollers to feed this light, unstable material has inherent limitations. A mechanism that does not utilize feed rollers is disclosed in Underhill U.S. Pat. No. 5,036,642. It is particularly adapted for feeding the netwrap into the front of a round baler. Another mechanism that does not utilize feed rollers, and is adapted for feeding netting into the rear portion of a baler is disclosed in Van den Wildenberg EP 0 820 691. [0004] The supply roll of the netting material is known to be wider than the length of the cylindrical bale. Mechanisms have been developed to improve the feeding of this wide netwrap material. One early example is shown in Van den Wildenberg U.S. Pat. No. 4,917,008. Later mechanisms, to more reliably wrap the netwrap material around the edges of the bale, are disclosed in McClure et al. U.S. Pat. No. 6,550,218 and Myers et al. U.S. Pat. No. 6,006,504. The mechanism disclosed in Myers includes an element that interacts with the formed bale and cooperates with the lower idler roller that defines the net entry point, to provide space for entry of the outer edge of the netting material into the baler such that the outer edge does not contact the bale until some distance from the idler roller. The use of such an element, located near a roller at the bottom of a baler, was previously known, as disclosed in Meyer U.S. Pat. No. 4,910,949 as a wedge member that interacts with the formed bale to affect the sides of the bale. [0005] In addition to feeding the material to the baler, the netwrap mechanism must sever the material, after the desired amount of netwarp has been dispensed. The Van den Wildenberg reference discloses a cutting mechanism comprising several moving parts that must work together to cut the netwrap. SUMMARY [0006] The present invention provides a reliable cost effective mechanism for feeding netwrap material from a supply roll, wider than the length of the cylindrical bale forming chamber, without the use of feed rollers, in combination with a simplified mechanism for cutting the netwrap. BRIEF DESCRIPTION OF THE DRAWINGS [0007] FIG. 1 is a schematic side view of an empty round baler; [0008] FIG. 2 is a schematic side view of a round baler with a full-sized bale therein; [0009] FIG. 3 is a partial schematic side view of the secondary inlet illustrating the configuration of the netwrap guides; [0010] FIG. 3a is a partial isometric view of the net feed pan; [0011] FIG. 3b is an enlarged view of area 3b as identified in FIG. 3; [0012] FIG. 3c is an isometric view showing the front net guide; [0013] FIG. 3d is an enlarged side view like FIG. 1 but showing the pickup, lower forming roller and one of the belt rollers; [0014] FIG. 3e is a view like FIG. 3d, but showing an alternate form of the wedge member; [0015] FIG. 4 is a cross sectional view as would be viewed taken along viewing plane 4-4 shown in FIG. 3b; [0016] FIG. 4a is a cross sectional view as would be viewed along viewing plane 4a-4a shown in FIG. 3b; [0017] FIG. 4b is a cross sectional view as would be viewed along viewing plane 4b-4b shown in FIG. 3e; [0018] FIG. 5 is a partial schematic section of the baler illustrating the netwrap mechanism in the cut/hold position; [0019] FIG. 6 is a partial schematic section of the baler illustrating the netwrap mechanism in the power feed position; Continue reading about Netwrap feed and cut mechanism... Full patent description for Netwrap feed and cut mechanism Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Netwrap feed and cut mechanism patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Netwrap feed and cut mechanism or other areas of interest. ### Previous Patent Application: Retractable mower deck Next Patent Application: Highly supercharged regenerative gas turbine Industry Class: Harvesters ### FreshPatents.com Support Thank you for viewing the Netwrap feed and cut mechanism patent info. 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