A trolley device is used to convey laminar elements. The trolley device includes at least one belt that defines a closed loop, a plurality of pulleys, at least one drive pulley being configured to act on the belt, the pulleys being mounted on a frame with a supporting region over which a section of the belt can be slid and wherein suction means linked to the belt are provided. The belt includes at least on the outer face thereof a projecting section of predetermined length that protrudes in height with respect to the rest of the belt, the projecting section being provided with a plurality of through holes aligned in position with through holes made in the belt.

A sheet feeding device includes: a stacker that stacks sheets of paper; a suction conveyor disposed vertically above the sheets stacked in the stacker for sucking and conveying the sheets; a blower that blows air onto the sheets; and a regulating member disposed on a downstream side of the suction conveyor in a conveyance direction, facing an outlet of the sheets of the suction conveyor and projecting vertically upward, wherein the suction conveyor includes: horizontal portions provided on both ends in a width direction; and a recess provided in an intermediate portion and recessed vertically above the horizontal portions, and a lower limit of a projection height of the regulating member is set so that, when there is a vertical gap between a vertical upper end portion of the regulating member and the horizontal portions, a length of the gap is less than twice a thickness of the sheets.

An apparatus for inserting one or more goods into a moving cover includes a cover transport, and at least one separating device configured to engage with a first part of the cover and to maintain the first part of the cover separate from a second part of the cover during at least a part of the movement of the cover.

A sheet feeding device includes: a stacker that stacks sheets of paper; a suction conveyor disposed vertically above the sheets stacked in the stacker for sucking and conveying the sheets; a blower that blows air onto the sheets; and a regulating member disposed on a downstream side of the suction conveyor in a conveyance direction, facing an outlet of the sheets of the suction conveyor and projecting vertically upward, wherein the suction conveyor includes: horizontal portions provided on both ends in a width direction; and a recess provided in an intermediate portion and recessed vertically above the horizontal portions, and a lower limit of a projection height of the regulating member is set so that, when there is a vertical gap between a vertical upper end portion of the regulating member and the horizontal portions, a length of the gap is less than twice a thickness of the sheets.

An apparatus for inserting one or more goods into a moving cover includes a cover transport, and at least one filling aid configured to move at least partially into the cover and to be maintained within the cover during at least a part of the movement of the cover.

A guide-equipped belt includes: a flat belt portion; a guide portion that is made of an elastic material and protrudes along a longitudinal direction on a surface of the flat belt portion face to a pulley; and a guide covering material that is made of a knitted fabric, includes a dense mesh such that the guide covering material is not embedded in the elastic material constituting the guide portion, and covers a surface of the guide portion, in which at a top portion of the guide portion where the guide covering material is exposed to an outside, a recess gently inclined from corners of the top portion to a center of the top portion is formed along the longitudinal direction.