Clamping device

Claim 2

An assembly for the purpose described comprising: an elongated clamp having a fore extremity provided with an integral rigid end for engaging work adapted to be mounted on a horizontal support, said extremity also being provided with a longitudinal opening extending transversely therethrough for receiving a rod having a lower end for attachment to a horizontal support and an upper end provided with means for applying pressure to said clamp, said clamp also having a rear extremity having an aperture extending transversely therethrough, said aperture being countersunk to provide a concave seat at the under side of said clamp, a threaded shaft extending through said aperture and having a lower end provided with a pressure foot for engaging a horizontal support and an upper end provided with a handle whereby to facilitate manipulation of said shaft, and an elongated nut carried by said shaft and interposed between said clamp and said pressure foot, said nut having an upper convex portion for disposition in said seat and a lower portion extending appreciably below said clamp for manual engagement whereby to facilitate rapid manipulation of said nut relative to said shaft and clamp to assist in adjusting said clamp in relation to work to be clamped by said rigid end.

Claim 3

The assembly defined in claim 1, in which said longitudinal opening is countersunk at the upper side of said clamp and said pressure applying means includes a fitting having a convex surface for engaging the material defining said countersunk opening.

Claim 4

The subassembly defined in claim 1, including resiliently flexible material interposed between the material defining said concave seat and said convex portion of said nut whereby to facilitate locking of said convex portion in said seat.

Claim 5

The assembly defined in claim 1, in which said aperture is also countersunk at the upper side of the clamp in order to provide clearance so said clamp may tilt relatively to said shaft.

Claim 6

The assembly defined in claim 1, in which said opening and said aperture are respectively countersunk at the upper side of said clamp and said pressure applying means on said rod includes a fitting having a convex surface for engaging the material defining said countersunk opening, the arrangement being such that said countersink of said aperture at said upper side provides clearance for said shaft and said countersink of said opening at said upper side and the convex surface of said fitting will allow tilting of said clamp relative to said rod and shaft.

Claim 7

The assembly defined in claim 1, in which said opening is countersunk both at the upper and under side of said clamp and said aperture is countersunk at the upper side of said clamp whereby to facilitate tilting of said clamp relative to said rod and said shaft.

Claim 8

The assembly defined in claim 1, in which said pressure applying means including an elongated fitting having a slot therein through which said rod extends and said pressure applying means also includes an element whereby said fitting may be forced against said clamp.

Claim 9

A subassembly for the purpose described comprising: an elongated clamp having a fore end for engaging and clamping work against a support and a rear end provided with an opening extending transversely therethrough, said opening being countersunk at the under side of said clamp to provide a concave recess of appreciable depth, a threaded shaft extending through said opening and having an upper end provided with an enlargement forming a handle which serves to facilitate manual operation of said shaft and limit its downward movement through said opening, said opening also being countersunk to provide clearance at the upper side of said clamp whereby to facilitate tilting of said clamp relative to said shaft, said shaft also having a lower end provided with a pressure foot loosely connected thereto for engaging a support, and an elongated nut carried by said shaft provided with an upper convex integral portion of appreciable axial extent for reception in said recess and a lower portion for disposition an appreciable axial distance below said clamp when said convex portion is seated in said recess whereby to facilitate manipulation of said nut relative to said shaft and clamp to assist in adjusting said fore end of said clamp in relation to the work to be clamped.

Claim 10

A subassembly for the purpose described comprising: an elongated clamp having a fore end for engaging and clamping work against a support and a rear end provided with an opening extending transversely therethrough, said opening being countersunk at the under side of said clamp to provide a concave recess of appreciable depth, a threaded shaft extending through said opening and having an upper end provided with an enlargement forming a handle which serves to facilitate manual operation of said shaft and limit its downward movement through said opening, said opening also being countersunk to provide clearance at the upper side of said clamp whereby to facilitate tilting of said clamp relative to said shaft, said shaft also having a lower end provided with a pressure foot loosely connected thereto for engaging a support, and an elongated nut carried by said shaft provided with an upper convex integral portion of appreciable axial extent for reception in said recess and a lower portion for disposition an appreciable axial distance below said clamp when said convex portion is seated in said recess whereby to facilitate manipulation of said nut relative to said shaft and clamp to assist in adjusting said fore end of said clamp in relation to the work to be clamped.

Claim 11

The subassembly defined in claim 8, including resiliently flexible means which is interposed between said recess and said convex portion of said nut.

Claim 12

The subassembly defined in claim 8, in which said clamp is provided with a layer of resiliently flexible material which serves to reduce noise and assist in locking said convex portion of said nut in said concave recess.

Claim 13

The subassembly defined in claim 8, in which said pressure foot is detachably connectible with said shaft.

Claim 14

A clamping device of the character described comprising: an elongated clamp provided with a hole extending transversely through one extremity thereof and a threaded shaft extending loosely through said hole, said clamp also being provided with a clamping end portion and an opening extending lengthwise of the clamp and transversely through its other extremity, a rod extending loosely through said opening for free axial movement therein and free displacement to and from said shaft and having a lower end for free slidable adjustment and securement in a slot provided in a horizontal support, said rod also having a threaded upper end, manually adjustable pressure applying means carried by said threaded end for movement relative thereto for applying pressure against said clamp, said hole being countersunk to provide a concave recess in the under side of said clamp, said threaded shaft having a pressure foot loosely connected to a lower end thereof for adjustably engaging a horizontal support, a handle fixedly secured to an upper end of said shaft whereby to facilitate its manipulation, an elongated nut threadedly connected to said shaft and having an upper convex portion for disposition in said concave recess and a lower portion extending appreciably below the under side of said clamp for manual engagement whereby to facilitate rapid axial adjustment of said nut relative to said shaft and said clamp whereby to assist in adjusting the clamping end portion of said clamp against work adapted to be held on a horizontal support.

Claim 15

A clamping device of the character described comprising: an elongated clamp provided with a hole extending transversely through one extremity thereof and a threaded shaft extending loosely through said hole, said clamp also being provided with a clamping end portion and an opening extending lengthwise of the clamp and transversely through its other extremity, a rod extending loosely through said opening for free axial movement therein and free displacement to and from said shaft and having a lower end for free slidable adjustment and securement in a slot provided in a horizontal support, said rod also having a threaded upper end, manually adjustable pressure applying means carried by said threaded end for movement relative thereto for applying pressure against said clamp, said hole being countersunk to provide a concave recess in the under side of said clamp, said threaded shaft having a pressure foot loosely connected to a lower end thereof for adjustably engaging a horizontal support, a handle fixedly secured to an upper end of said shaft whereby to facilitate its manipulation, an elongated nut threadedly connected to said shaft and having an upper convex portion for disposition in said concave recess and a lower portion extending appreciably below the under side of said clamp for manual engagement whereby to facilitate rapid axial adjustment of said nut relative to said shaft and said clamp whereby to assist in adjusting the clamping end portion of said clamp against work adapted to be held on a horizontal support.

Claim 16

The device defined in claim 12, including resiliently flexible means which is interposed between said concave recess and said convex portion of said nut.

Claim 17

The device defined in claim 12, in which said clamp is protected with a layer of resiliently flexible material and so said convex portion of said nut may engage such material in said concave recess.