A chalk line apparatus with a housing having a body with a top, a bottom, a front, a rear, and laterally spaced sides. The body defines an internal space within which a spool is operatively mounted. A drive assembly is operable through an actuator to cause line to be accumulated on the spool through a fill opening on the housing. A supply of chalk can be introduced into the internal space to contact the line. A stopper assembly can be selectively placed in closed and open states. The stopper assembly has a blocking portion that: a) blocks passage of chalk through the fill opening with the stopper assembly in the closed state; and b) permits chalk to be directed through the fill opening and into the internal space with the stopper assembly in the open state. The stopper assembly is adjacent to the drive assembly actuator.

A chalk line apparatus with a housing having a body with a top, a bottom, a front, a rear, and laterally spaced sides. The body defines an internal space within which a spool is operatively mounted. A drive assembly is operable through an actuator to cause line to be accumulated on the spool through a fill opening on the housing. A supply of chalk can be introduced into the internal space to contact the line. A stopper assembly can be selectively placed in closed and open states. The stopper assembly has a blocking portion that: a) blocks passage of chalk through the fill opening with the stopper assembly in the closed state; and b) permits chalk to be directed through the fill opening and into the internal space with the stopper assembly in the open state. The stopper assembly is adjacent to the drive assembly actuator.

A coupling device for connecting first and second chalk lines includes a generally planar body portion having a first end, a second end and opposed sides edges, an aperture formed in the body portion adjacent to the first end for attaching a free end of a first chalk line to the coupling device, and a spring hook connected to a first of the opposed side edges and being configured to receive a second chalk line.

A coupling device for connecting first and second chalk lines includes a generally planar body portion having a first end, a second end and opposed sides edges, an aperture formed in the body portion adjacent to the first end for attaching a free end of a first chalk line to the coupling device, and a spring hook connected to a first of the opposed side edges and being configured to receive a second chalk line.

A chalk box may include a housing having an aperture, a reel assembly enclosed within the housing, a string having a first end operably coupled to an end hook and configured to extend from the housing through the aperture and having a second end configured to be wound on the reel assembly, a chalk reservoir in which the string is retained or through which the string passes prior to extending out of the aperture, and a seating assembly configured to extend around at least fifty percent of the length or volume of the end hook when the string is fully withdrawn into the housing.

A chalk box may include a housing having an aperture, a reel assembly enclosed within the housing, a string having a first end operably coupled to an end hook and configured to extend from the housing through the aperture and having a second end configured to be wound on the reel assembly, a chalk reservoir in which the string is retained or through which the string passes prior to extending out of the aperture, and a seating assembly configured to extend around at least fifty percent of the length or volume of the end hook when the string is fully withdrawn into the housing.

A coupling device for connecting first and second chalk lines includes a generally planar body portion having a first end, a second end and opposed sides edges, an aperture formed in the body portion adjacent to the first end for attaching a free end of a first chalk line to the coupling device, and a plurality of spaced apart and linearly aligned hooks extending from the body portion adjacent to one of the side edges, the plurality of hooks defining a channel for receiving a second chalk line therethrough. Each of the hooks includes a clearance portion for insertion of the second chalk line into the channel defined by the plurality of hooks.

A coupling device for connecting first and second chalk lines includes a generally planar body portion having a first end, a second end and opposed sides edges, an aperture formed in the body portion adjacent to the first end for attaching a free end of a first chalk line to the coupling device, and a plurality of spaced apart and linearly aligned hooks extending from the body portion adjacent to one of the side edges, the plurality of hooks defining a channel for receiving a second chalk line therethrough. Each of the hooks includes a clearance portion for insertion of the second chalk line into the channel defined by the plurality of hooks.

A chalk reel includes a housing defining a chalk chamber and an opening from the chalk chamber; a spool positioned within the chalk chamber; and a line wound on the spool and extending through the opening, the line having a width of dimension X. The spool comprises an axial hub and a sidewall. The sidewall comprises a plurality of apertures extending through the sidewall from a first face distal from the axial hub to a second face proximal to the axial hub. Each of the plurality of apertures having a maximum width of dimension Y. The dimension Y is sized so that no loops of the line may fit through each of the plurality of apertures.

A chalk reel includes a housing defining a chalk chamber and an opening from the chalk chamber; a spool positioned within the chalk chamber; and a line wound on the spool and extending through the opening, the line having a width of dimension X. The spool comprises an axial hub and a sidewall. The sidewall comprises a plurality of apertures extending through the sidewall from a first face distal from the axial hub to a second face proximal to the axial hub. Each of the plurality of apertures having a maximum width of dimension Y. The dimension Y is sized so that no loops of the line may fit through each of the plurality of apertures.