Method and apparatus for forming a trench
AssigneeConstruction Casting Company
InventorJohn V. Beamer
Life of this patent
Estimating the term…
Abstract
A device for forming a trench having a pair of frame members, connecting rods disposed between the frame members to maintain the frame members in a fixed position relative to each other, anchoring means attached to the frame members for positioning the frame members relative to the ground and a form removably held in a fixed position between the frame members having an upper surface and a shaped lower surface, the shaped lower surface providing means for molding a moldable trench composition into the shape.
Claims48
A device for forming a trench comprising:
- (a) a pair of frame members;
- (b) a connecting rod disposed between said frame members to maintain said frame members in a fixed position relative to each other;
- (c) anchoring means attached to said frame members for positioning said frame members relative to the ground;
- and
- (d) a form removably held in a fixed position between said frame members and having an upper surface and a shaped lower surface, said shaped lower surface providing means for molding a moldable trench composition into the shape of the lower surface.
A system for forming a trench, comprising a plurality of adjacent trench forming devices, each said device comprising:
- (a) a pair of frame members;
- (b) a connecting rod disposed between said frame members in a fixed position relative to each other;
- (c) anchoring means attached to said frame members for positioning said frame members relative to the ground and to the adjacent devices;
- and
- (d) a form removably held in a fixed position between said frame members and having an upper surface and a shaped lower surface, said shaped lower surface providing means for molding a moldable trench composition into the shape of the lower surface.
A method of forming a trench from a moldable trench composition comprising:
- (a) forming a ditch in the ground;
- (b) placing a trench device in the ditch, said device comprising:
- (i) a pair of frame members;
- (ii) a connecting rod disposed between said frame members to maintain said frame members in a fixed position relative to each other;
- (iii) anchoring means attached to said frame members for positioning said frame members relative to the ground;
- and
- (iv) a form removably held in a fixed position between said frame members and having an upper surface and a shaped lower surface, said shaped lower surface providing means for molding a moldable trench composition into the shape of the lower surface,
- (c) positioning said frame members relative to the ground;
- (d) placing a moldable trench composition in the ditch and around said trench forming device to form a trench having the shape and slope of said trench forming device form;
- and
- (e) removing said form from between said frame members after said moldable trench composition has set.
A method of forming a trench form from a moldable trench composition comprising:
- (a) forming a ditch in the ground;
- (b) placing a plurality of adjacent trench forming devices in the ditch and adjacent to each other, each said device comprising:
- (i) a pair of frame members;
- (ii) a connecting rod disposed between said frame members to maintain said frame members in a fixed position relative to each other;
- (iii) anchoring means attached to said frame members for positioning said frame members relative to the ground;
- and
- (iv) a form removably held in a fixed position between said frame members and having an upper surface and a shaped lower surface, said shaped lower surface providing means for molding a moldable trench composition into the shape of the lower surface.
- (c) positioning said frame members of each said device relative to the ground and to the adjacent devices;
- (d) placing a moldable trench composition in the ditch and around said plurality of trench forming devices to form a trench having the shape and slope of said plurality of said trench forming device forms;
- and
- (e) removing said form of each said device from between said frame members of each said device after said moldable trench composition has set.
Dependencies are inferred from the claim text.