https://the-co.com/product/294136MH/

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Note added at 1 hr (2023-10-28 10:14:27 GMT)
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These bars are mounted on a thresher drum, which is in the section of the combine harvester that separates the grain from the stalks.

"rasp bar" "threshing" Environ 121.000 résultats (0,35 secondes)
"rasp bar" "threshing drum" Environ 5.600 résultats (0,38 secondes)
"threshing bar" "threshing drum" Environ 352 résultats (0,31 secondes)

Une moissonneuse-batteuse est une machine agricole automotrice destinée à la récolte de plantes à graines, principalement les céréales, en une seule opération. Elle permet de réaliser simultanément la moisson et le battage.
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Il en existe trois types : les conventionnelles possèdent des secoueurs (comme le schéma plus bas dans la page), les axiales ont des rotors à la place du batteur et des secoueurs, et les hybrides sont un mélange des deux avec batteur et rotor.
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6 batteur
7 contre-batteur
https://fr.wikipedia.org/wiki/Moissonneuse-batteuse

The modern combine harvester, or simply combine, is a machine designed to harvest a variety of grain crops. The name derives from its combining four separate harvesting operations—reaping, threshing, gathering, and winnowing—to a single process.
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6) Threshing drum
7) Concave
https://en.wikipedia.org/wiki/Combine_harvester

The threshing drum and concave are identical to the ones used in the Fortschritt E 512. The threshing drum has a width of 1278 mm and a diameter of 600 mm. It is equipped with 8 rasp bars. It is driven by a belt, that is hydraulically adjustable in length (CVT), in order to adjust the threshing drum speed. The speed is adjustable between 603 and 1600 min−1. The concave has 14 rasp bars, and its distance from the threshing drum can be quickly adjusted in three steps using a lever in the driver's cabin; fine adjusting is possible by turning the concave adjusting nut with a jaw spanner.
https://en.wikipedia.org/wiki/Fortschritt_E_514#Threshing_sy...

Number of raspbars (corrugated flat bars) mounted on the periphery of a drum.
The threshing is achieved by rubbing action of plates between cylinder and concave and the impact by the raspbar
https://courseware.cutm.ac.in/wp-content/uploads/2020/06/2.3...

80411998 Rasp bar set right RH for NEW HOLLAND combine harvester, threshing drum
https://www.ersatzteile-landmaschinen.com/en/80411998-rasp-b...

The thresher consists of rasp bar threshing cylinder, oscillating sieves, concave and winnowing and cleaning attachment. The rasp-bar cylinder is made of cast iron rings, sheet metal and toothed racks and is fitted on the main shaft running on two heavy pedal bearings.
https://farmech.dac.gov.in/FarmerGuide/RJ/9R.htm

Four types of contact models between grain and threshing components have been constructed correspondently. Grain damage can be regarded as a function of peripheral velocity and contact pattern of impacting. Grain loss can be regarded as a function of contact pattern of rasp bars.
https://www.researchgate.net/publication/325624225_Review_of...

The sunflower threshing capacity of a rasp bar drum was higher than peg tooth type, both with open and closed threshing drums.
https://www.sciencedirect.com/science/article/abs/pii/S15375...


FIG. 1 is a fragmentary side elevation of a rasp-bar type cylinder, shown in operating relation with its concave, provided with resilient ribs, in accordance with my invention;
FIG. 2 is a transverse section through the concave and Patented June 4, 1963 the ribs thereof taken on the line 2-2. in FIG. 1; and
FIG. 3 is a fragmentary perspective of a threshing machine of the rasp-bar cylinder-type shown on a reduced scale with its concave and the mechanism associated therewith.
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Thus, the truncated pyramidal coverings extending above the concave grate sides take the appearance shown in FIG. 1 and fill substantially the entire space 3 between the upper edge of the concave grate and the lower edges of the rasp-bars 4a carried by cylinder 4.
https://patents.google.com/patent/US3092115A/en
Figures see https://worldwide.espacenet.com/patent/drawing?channel=espac...