Device for measuring the workability and compaction of fresh concrete

Claim 1

A device for use in determining the workability, consistency, slump and compaction of a freshly prepared concrete mix which comprises a tube including a central bore, a member fixedly attached to and extending substantially transversely of said tube for limiting the depth to which said tube may be inserted into said mix, a plurality of apertures each in the shape of a slot extending from a closed end of the tube remote from the transverse member partially along said tube, including between the ends of said slotted apertures and said transverse member at least one set of a plurality of small apertures disposed around the periphery of said tube through which apertures said mix may enter said bore on insertion of said device into said mix, and index means associated with said tube for determining the residual height to which the mix is present in the bore of said tube on withdrawal of said device from said mix.

Claim 2

A device for use in determining the workability, consistency, slump and compaction of a freshly prepared concrete mix which comprises a tube including a central bore, a member fixedly attached to and extending substantially transversely of said tube for limiting the depth to which said tube may be inserted into said mix, a plurality of apertures each in the shape of a slot extending from a closed end of the tube remote from the transverse member partially along said tube, including between the ends of said slotted apertures and said transverse member at least one set of a plurality of small apertures disposed around the periphery of said tube through which apertures said mix may enter said bore on insertion of said device into said mix, and index means associated with said tube for determining the residual height to which the mix is present in the bore of said tube on withdrawal of said device from said mix.

Claim 9

A device for use in determining the workability, consistency, slump and compaction of a freshly prepared concrete mix which comprises a tube including a central bore, a member fixedly attached to and extending substantially transversely of said tube for limiting the depth to which said tube may be inserted into said mix, said tube including four slotted apertures disposed at 90* around the periphery of said tube, each of said apertures extending from the end of the tube remote from the transverse member only partially along said tube, said tube including between the ends of the slotted apertures and said transverse member four sets of a plurality of small apertures, each set being spaced longitudinally along said tube and being formed by a plurality of small apertures extending around the periphery of said tube through which apertures said mix may enter said bore on insertion of said device into said mix, and index means associated with said tube for determining the residual height to which the mix is present in the bore of the tube on withdrawal from said mix.

Claim 10

A device for use in determining the workability, consistency, slump and compaction of a freshly prepared concrete mix which comprises a tube including a central bore, a member fixedly attached to and extending substantially transversely of said tube for limiting the depth to which said tube may be inserted into said mix, said tube including four slotted apertures disposed at 90* around the periphery of said tube, each of said apertures extending from the end of the tube remote from the transverse member only partially along said tube, said tube including between the ends of the slotted apertures and said transverse member four sets of a plurality of small apertures, each set being spaced longitudinally along said tube and being formed by a plurality of small apertures extending around the periphery of said tube through which apertures said mix may enter said bore on insertion of said device into said mix, and index means associated with said tube for determining the residual height to which the mix is present in the bore of the tube on withdrawal from said mix.

Claim 11

A method of determining the workability, consistency, slump and compaction of a freshly prepared concrete mix which comprises inserting a device into said mix, said device comprising a tube including a central bore, a member fixedly attached to and extending substantially transversely of said tube, a plurality of apertures each in the shape of a slot extending longitudinally of said tube from a closed end thereof remote from said transverse member, partially along said tube, including between the ends of said slotted apertures and said transverse member at least one set of a plurality of small apertures disposed around the periphery of said tube, and index means associated with said tube, said device being inserted into said mix until said transverse member is seated on top of said mix whereby said mix may enter the bore of said device removing the device from the mix while allowing said mix in said bore to flow freely therefrom during said removal and ascertaining the residual height of the mix in the bore of the tube by viewing the index means of said tube.

Claim 12

A method of determining the workability, consistency, slump and compaction of a freshly prepared concrete mix which comprises inserting a device into said mix, said device comprising a tube including a central bore, a member fixedly attached to and extending substantially transversely of said tube, a plurality of apertures each in the shape of a slot extending longitudinally of said tube from a closed end thereof remote from said transverse member, partially along said tube, including between the ends of said slotted apertures and said transverse member at least one set of a plurality of small apertures disposed around the periphery of said tube, and index means associated with said tube, said device being inserted into said mix until said transverse member is seated on top of said mix whereby said mix may enter the bore of said device removing the device from the mix while allowing said mix in said bore to flow freely therefrom during said removal and ascertaining the residual height of the mix in the bore of the tube by viewing the index means of said tube.

Claim 13

A device for use in determining the workability, consistency, slump and compaction of a freshly prepared concrete mix which comprises a tube including a central bore, a member fixedly attached to and extending substantially transversely of said tube for limiting the depth to which said tube may be inserted into said mix, a plurality of apertures each in the shape of a slot extending from a closed end of the tube remote from the transverse member partially along said tube, including between the ends of said slotted apertures and said transverse member at least one set of a plurality of small apertures disposed around the periphery of said tube, through which apertures said mix may enter said bore on insertion of said device into said mix, and index means associated with said tube comprising a rod locatable in said bore and arranged for axial movement along said bore, said rod being of sufficient length to extend through an open end of said tube, and including an index associated therewith whereby the height of the mix in the bore of said tube may be determined before and after withdrawal of the device from said mix.

Claim 14

A device for use in determining the workability, consistency, slump and compaction of a freshly prepared concrete mix which comprises a tube including a central bore, a member fixedly attached to and extending substantially transversely of said tube for limiting the depth to which said tube may be inserted into said mix, a plurality of apertures each in the shape of a slot extending from a closed end of the tube remote from the transverse member partially along said tube, including between the ends of said slotted apertures and said transverse member at least one set of a plurality of small apertures disposed around the periphery of said tube, through which apertures said mix may enter said bore on insertion of said device into said mix, and index means associated with said tube comprising a rod locatable in said bore and arranged for axial movement along said bore, said rod being of sufficient length to extend through an open end of said tube, and including an index associated therewith whereby the height of the mix in the bore of said tube may be determined before and after withdrawal of the device from said mix.

Claim 15

A method of determining the workability, consistency, slump and compaction of a freshly prepared concrete mix which comprises inserting a device into said mix, said device comprising a tube including a central bore, a member fixedly attached to and extending substantially transversely of said tube, a plurality of apertures each in the shape of a slot extending longitudinally of said tube from a closed end thereof remote from said transverse member, partially along said tube, including, between the ends of said slotted apertures and said transverse member, at least one of a plurality of small apertures disposed around the periphery of said tube, and index means associated with said tube, said device being inserted into said mix until said transverse member is seated on the top of said mix, whereby said mix may enter the bore of the device, determininG a first height of the mix in said tube by lowering a rod having an index associated therewith through a top open end of said tube, down said bore into contact with the surface of said mix in said bore, raising said rod, removing the device from the mix while allowing said mix in said bore to flow freely therefrom during said removal and ascertaining the residual height of the mix in the bore of the tube by once more lowering the rod into contact with the surface of the mix in said bore.

Claim 16

A method of determining the workability, consistency, slump and compaction of a freshly prepared concrete mix which comprises inserting a device into said mix, said device comprising a tube including a central bore, a member fixedly attached to and extending substantially transversely of said tube, a plurality of apertures each in the shape of a slot extending longitudinally of said tube from a closed end thereof remote from said transverse member, partially along said tube, including, between the ends of said slotted apertures and said transverse member, at least one of a plurality of small apertures disposed around the periphery of said tube, and index means associated with said tube, said device being inserted into said mix until said transverse member is seated on the top of said mix, whereby said mix may enter the bore of the device, determininG a first height of the mix in said tube by lowering a rod having an index associated therewith through a top open end of said tube, down said bore into contact with the surface of said mix in said bore, raising said rod, removing the device from the mix while allowing said mix in said bore to flow freely therefrom during said removal and ascertaining the residual height of the mix in the bore of the tube by once more lowering the rod into contact with the surface of the mix in said bore.