GB819621A - Improvements in or relating to screeds - Google Patents
Improvements in or relating to screedsInfo
- Publication number
- GB819621A GB819621A GB34421/57A GB3442157A GB819621A GB 819621 A GB819621 A GB 819621A GB 34421/57 A GB34421/57 A GB 34421/57A GB 3442157 A GB3442157 A GB 3442157A GB 819621 A GB819621 A GB 819621A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screed
- produced
- masses
- shafts
- resultant force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
- E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
- E01C19/40—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers
- E01C19/402—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers the tools being hand-guided
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
819,621. Screeding machines. BYGGMEKANISERING A. B. Nov. 5, 1957 [Nov. 10, 1956], No. 34421/57. Class 107 The screed of a machine for laying a smooth surface, for example of concrete, is vibrated longitudinally but not vertically by rotating eccentric masses, so arranged in two groups that the forces produced by each of them act in the same direction longitudinally but in opposition in a vertical direction at right angles to the length of the screed. As shown, the tool 1 is supported by a flexible mounting 11 on the carriage 5 fitted with handles 4. :and the longitudinal vibrations are produced by rotating eccentrically placed masses 19 and 20 fixed to gear wheels 14 by shafts 13 carried by a mounting 2 attached to the tool 1, the centre shaft 13 and gear 14 being driven by electric motor 3 rotating outer gears 14 which are freely mounted. The sum of the masses of eccentrics 20 equals that of eccentric 19 so that in the position shown by full lines in Fig. 3, the forces produced by rotation of the masses are equal and opposite producing no resultant force whilst in the position shown in broken lines a resultant force to the left is produced; a corresponding force to the right is produced 180 degrees later in the rotation of shafts 13. If desired, the screed can be arranged to operate with longitudinal and vertical vibrations and by tilting the shafts 13 forwards a resultant force can be obtained which will cause the screed to move forwards over the surface to be treated.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE819621X | 1956-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB819621A true GB819621A (en) | 1959-09-09 |
Family
ID=20345617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34421/57A Expired GB819621A (en) | 1956-11-10 | 1957-11-05 | Improvements in or relating to screeds |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB819621A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4170549A (en) * | 1975-12-08 | 1979-10-09 | Johnson Louis W | Vibrating screen apparatus |
WO1999007940A1 (en) * | 1997-08-05 | 1999-02-18 | B-Mac, Besloten Vennootschap Met Beperkte Aansprakelijkheid | Vibrating device for processing a floor layer |
BE1011312A3 (en) * | 1997-08-05 | 1999-07-06 | B Mac Besloten Vennootschap Me | Vibrating device for treating a layer of flooring |
US6976805B2 (en) | 2001-10-09 | 2005-12-20 | Delaware Capital Formation, Inc. | Light weight apparatus for screeding and vibrating uncured concrete surfaces |
US7850396B2 (en) | 2008-01-03 | 2010-12-14 | Somero Enterprises, Inc. | Wheeled screeding device |
US7891906B2 (en) | 2008-02-27 | 2011-02-22 | Somero Enterprises, Inc. | Concrete finishing apparatus |
US7909533B2 (en) | 2001-10-09 | 2011-03-22 | Somero Enterprises, Inc. | Apparatus for screeding uncured concrete surfaces |
CN109235897A (en) * | 2018-10-29 | 2019-01-18 | 武汉星级工长建材有限公司 | The levelling constructing device of small area |
-
1957
- 1957-11-05 GB GB34421/57A patent/GB819621A/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4170549A (en) * | 1975-12-08 | 1979-10-09 | Johnson Louis W | Vibrating screen apparatus |
WO1999007940A1 (en) * | 1997-08-05 | 1999-02-18 | B-Mac, Besloten Vennootschap Met Beperkte Aansprakelijkheid | Vibrating device for processing a floor layer |
BE1011312A3 (en) * | 1997-08-05 | 1999-07-06 | B Mac Besloten Vennootschap Me | Vibrating device for treating a layer of flooring |
US6293780B1 (en) * | 1997-08-05 | 2001-09-25 | B-Mac, Besloten Vennootschap Met Beperkte Aansprakelijkheid | Vibrating device for processing a floor layer |
US6976805B2 (en) | 2001-10-09 | 2005-12-20 | Delaware Capital Formation, Inc. | Light weight apparatus for screeding and vibrating uncured concrete surfaces |
US7909533B2 (en) | 2001-10-09 | 2011-03-22 | Somero Enterprises, Inc. | Apparatus for screeding uncured concrete surfaces |
US7850396B2 (en) | 2008-01-03 | 2010-12-14 | Somero Enterprises, Inc. | Wheeled screeding device |
US7891906B2 (en) | 2008-02-27 | 2011-02-22 | Somero Enterprises, Inc. | Concrete finishing apparatus |
US8075222B2 (en) | 2008-02-27 | 2011-12-13 | Somero Enterprises, Inc. | Concrete finishing apparatus |
CN109235897A (en) * | 2018-10-29 | 2019-01-18 | 武汉星级工长建材有限公司 | The levelling constructing device of small area |
CN109235897B (en) * | 2018-10-29 | 2024-02-13 | 武汉星级工长建材有限公司 | Small-area leveling construction device |
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