Apparatus for the continuous casting of concrete

• US 3,954,359 A
• Filed: 05/10/1974
• Issued: 05/04/1976
• Est. Priority Date: 05/10/1974
• Status: Expired due to Term

• Current Assignee: William T. Shields
• Original Assignee: William T. Shields
• Inventors: Larkin, Frank O.
• Primary Examiner(s): Husar, Francis S.
• Assistant Examiner(s): McQuade, John
• Application Number:
  US05/469,426
• Time in Patent Office: 725 Days
• Field of Search: 425/59, 425/63-65, 425/219, 425/432, 425/456, 404/96-98, 404/105, 404/106
• US Class Current: 425/63
• CPC Class Codes: E01C 19/4893 Apparatus designed for railless operation
• CPC Class Codes: E01C 23/026 Introducing preformed inserts into or filling grooves or like channels in laid paving, with or without concurrent making or working of groove or channel, e.g. filling groove with semi-plastic material E01C23/028 takes precedence

Abstract

A curbing machine utilizing slip form casting of cement or concrete is disclosed which will continuously cast curbing or pavements and simultaneously with the casting operation provide the necessary expansion joints in the cast curbing. The curbing machine includes a conventional tractor with an additional speed reduction gear box. A unitary open bottom hopper and slip mold is removably and adjustably carried between the wheels of the tractor by hydraulic cylinders permitting both vertical and tilting adjustment of the mold to adjust the mold to the contour of the ground. Means are provided within the hopper and immediately in front of the slip mold to form the expansion joint in the cast curbing. In an alternate embodiment, the slip mold is mounted outboard of the tractor with hydraulic cylinders provided to raise, lower and tilt the slip mold.

Claims

1. Apparatus for the continuous casting of concrete by the slip mold method comprising:

self propelled tractor means,

a support frame rigidly mounted on said tractor means so as to preclude relative movement therebetween,

a slip mold having top and side walls and an open bottom,

a hopper having front, rear and side walls at the front of said slip mold in communication with slip mold for supplying concrete to the slip mold, said slip mold being mounted beneath the tractor and extending in a direction longitudinally of the tractor with the hopper projecting upwardly from the slip mold in front of the tractor,

mounting means for said slip mold for adjustably mounting said slip mold to said tractor in a position extending lengthwise of the tractor with the hopper projecting in front of the tractor, said mounting means including a pair of hydraulic cylinders provided on each side of the tractor interconnecting the support frame and the slip mold with one cylinder of each pair connected to the front of the slip mold and the other cylinder of each pair connected to the rear of the slip mold, said hydraulic cylinders being operable to raise and lower said slip mold and hopper and tilt the same from side to side, and

control means for said hydraulic cylinders to control operation of said hydraulic cylinders.

2. Apparatus in accordance with claim 1 in which the control means for said hydraulic cylinders includes a pair of manually operated valves, one valve for each of said pairs of hydraulic cylinders, said valves being operable independently or together to raise and lower the front and rear of said slip mold and tilt said slip mold.

3. Apparatus in accordance with claim 1 including a first enclosed sleeve for each of said hydraulic cylinders, said first sleeves being fixed to said support frame and projecting vertically upwardly therefrom, said hydraulic cylinders being pivotally connected at their upper ends to the upper ends of said first sleeves and loosely carried therein for movement about a first axis, and a second sleeve for each of said hydraulic cylinders pivotally connected to said slip mold and projecting upwardly therefrom and telescopically received within said first sleeves, each of said hydraulic cylinders having a piston and piston rod with the end of the piston rod pivotally connected to the point of attachment of said second sleeve with said slip mold for movement about a second axis extending generally at a right angle to said first axis.

4. Apparatus for the continuous casting of concrete by the slip mold method comprising:

self propelled tractor means,

a support frame rigidly mounted on said tractor means so as to preclude relative movement therebetween,

a slip mold having top and side walls and an open bottom,

a hopper having front, rear and side walls at the front of said slip mold in communication with said slip mold for supplying concrete to the slip mold,

mounting means for said slip mold for adjustably mounting said slip mold to said tractor in a position extending lengthwise of the tractor with the hopper projecting in front of the tractor, said mounting means including a plurality of hydraulic cylinders operable to raise and lower said slip mold and hopper and tilt the same from side to side,

a first enclosed sleeve for each of said hydraulic cylinders, said first sleeves being fixed to said support frame and projecting vertically downwardly therefrom, said hydraulic cylinders being pivotally connected at their upper ends to the upper ends of said first sleeves and loosely carried therein for movement about a first axis, and a second sleeve for each of said hydraulic cylinders pivotally connected to said slip mold and projecting upwardly therefrom and telescopically received within said first sleeves, each of said hydraulic cylinders having a piston and piston rod with the end of the piston rod pivotally connected to the point of attachment of said second sleeves with said slip mold in movement about a second axis extending generally at a right angle to said first axis, and

control means for said hydraulic cylinder to control operation of said hydraulic cylinders.