WO1980001579A1 - Attachment for a snow-plough - Google Patents

Attachment for a snow-plough Download PDF

Info

Publication number
WO1980001579A1
WO1980001579A1 PCT/NO1980/000003 NO8000003W WO8001579A1 WO 1980001579 A1 WO1980001579 A1 WO 1980001579A1 NO 8000003 W NO8000003 W NO 8000003W WO 8001579 A1 WO8001579 A1 WO 8001579A1
Authority
WO
WIPO (PCT)
Prior art keywords
plough
snow
tube
attachment
blades
Prior art date
Application number
PCT/NO1980/000003
Other languages
French (fr)
Inventor
B Hansen
Original Assignee
Steinsland B
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Steinsland B filed Critical Steinsland B
Priority to DK334880A priority Critical patent/DK152300C/en
Publication of WO1980001579A1 publication Critical patent/WO1980001579A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
    • E01H5/065—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades characterised by the form of the snow-plough blade, e.g. flexible, or by snow-plough blade accessories

Definitions

  • This invention relates to an attachment for a snow ⁇ plough.
  • a major drawback of existing snow-ploughs is that their design permits snow to be thrown backwards over the blade of the plough and onto the windscreen of the propelling vehicle.
  • a high-pressure area forms on the front surface of the blade and a low ⁇ pressure area on the rear surface of the blade. Due to the curvature of the plough blade, a good deal of the volume of air which is present at the front surface of the plough blade travels up to the top edge of the plough blade and passes into an area in which this volume of air and the snow which it contains are drawn towards the rear surface of the plough blade by the low pressure which exists there.
  • the result of this is a reduction in the driver's field of vision caused by the snow which is present in the air. Any increase in forward speed will, of course, cause more snow to be thrown back and will cause a further reduction in the driver's view.
  • the purpose of this invention is to provide an attachment for snow-ploughs which will overcome the drawback referred to above.
  • This purpose is achieved by designing the upper edge of the blades of the snow-plough in such a way that the front surfaces of the blades of the plough form an open tube with a longtitudinal gap running along the face of the plough blade, in which the air and the snow will be compressed inside the tube and induced to flow in a turbulent manner so that they will work their way outwards to the sides of the plough under the effect of the air which is arriving continuously under high pressure and in such a way that the air and snow will be ejected with great force from the tube, thus amplifying the normal rate of their ejection from the plough.
  • a further development of this invention is the incorporation of a length of connecting tube of the same dimensions as the other tube but of relatively short length and of a basically straight shape at the point at which the above-mentioned tube is joined, which in the case of a head plough will be a V-shaped join. This will cause more favourable conditions of turbulence to be created at the head of the snow-plough, as well as offering a more acceptable design from the point of view of road safety.
  • Fig. 1 shows a snow-plough (head plough) fitted with the attachment which is the subject of the invention.
  • Fig. 2 shows the section A - A indicated in Fig. 1, and also provides an indication of the flow path.
  • the references 1 and 2 in the drawing relate to the two blades of the snow-plough, to the forward upper edge of which is fitted an open, V-shaped tube 3 with a long ⁇ titudinal gap 4 running along the face of the plough blade 1 , 2 .
  • the V-shaped tube 3 has at its head a relatively short and basically straight length of connecting tube 5 of the same dimensions as the tube 3 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Road Signs Or Road Markings (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)

Abstract

Snow-plough in which the upper edge of the blades of the snow-plough is designed so that the front surfaces of the blades of the snow-plough (1, 2) form an open tube (3) with a longitudinal gap (4) running along the face of the plough blade (1, 2).

Description

ATTACHMENT FOR A SNOW-PLOUGH
This invention relates to an attachment for a snow¬plough.
A major drawback of existing snow-ploughs is that their design permits snow to be thrown backwards over the blade of the plough and onto the windscreen of the propelling vehicle. When the plough is in use a high-pressure area forms on the front surface of the blade and a low¬pressure area on the rear surface of the blade. Due to the curvature of the plough blade, a good deal of the volume of air which is present at the front surface of the plough blade travels up to the top edge of the plough blade and passes into an area in which this volume of air and the snow which it contains are drawn towards the rear surface of the plough blade by the low pressure which exists there. The result of this is a reduction in the driver's field of vision caused by the snow which is present in the air. Any increase in forward speed will, of course, cause more snow to be thrown back and will cause a further reduction in the driver's view.
The drawback referred to above means that very much lower operating speeds than would otherwise be normal must be used when using existing types of snow-plough, and that for this very reason there is a tendency to run at speeds which are a little too high, with the result that vision becomes poor and the driver is placed under great strain.
The purpose of this invention is to provide an attachment for snow-ploughs which will overcome the drawback referred to above. This purpose is achieved by designing the upper edge of the blades of the snow-plough in such a way that the front surfaces of the blades of the plough form an open tube with a longtitudinal gap running along the face of the plough blade, in which the air and the snow will be compressed inside the tube and induced to flow in a turbulent manner so that they will work their way outwards to the sides of the plough under the effect of the air which is arriving continuously under high pressure and in such a way that the air and snow will be ejected with great force from the tube, thus amplifying the normal rate of their ejection from the plough.
A further development of this invention is the incorporation of a length of connecting tube of the same dimensions as the other tube but of relatively short length and of a basically straight shape at the point at which the above-mentioned tube is joined, which in the case of a head plough will be a V-shaped join. This will cause more favourable conditions of turbulence to be created at the head of the snow-plough, as well as offering a more acceptable design from the point of view of road safety.
A model of the invention is illustrated in diagrammatic form in the drawings, in which:
Fig. 1 shows a snow-plough (head plough) fitted with the attachment which is the subject of the invention. Fig. 2 shows the section A - A indicated in Fig. 1, and also provides an indication of the flow path.
The references 1 and 2 in the drawing relate to the two blades of the snow-plough, to the forward upper edge of which is fitted an open, V-shaped tube 3 with a long¬titudinal gap 4 running along the face of the plough blade 1 , 2 . The V-shaped tube 3 has at its head a relatively short and basically straight length of connecting tube 5 of the same dimensions as the tube 3 .

Claims

P a t e n t c l a i m
1. An attachment for snow-ploughs, characterised in that the upper edge of the blades of the snow-plough is designed so that the front surfaces of the blades of the snow-plough (1 , 2) form an open tube (3) with a longtitudinal gap (4) running along the face of the plough blade (1 , 2) .
2. An attachment of the type indicated in claim 1, characterised in that the tube (3) , which in the case of a head plough is V-shaped, has at its head a relatively short and basically straight length of connecting tube (5) of the same dimensions as the tube (3) .
PCT/NO1980/000003 1979-02-05 1980-01-21 Attachment for a snow-plough WO1980001579A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK334880A DK152300C (en) 1979-02-05 1980-08-04 SNEELOV

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO790355 1979-02-05
NO790355A NO144712C (en) 1979-02-05 1979-02-05 DEVICE WITH SNOW LOG.

Publications (1)

Publication Number Publication Date
WO1980001579A1 true WO1980001579A1 (en) 1980-08-07

Family

ID=19884665

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1980/000003 WO1980001579A1 (en) 1979-02-05 1980-01-21 Attachment for a snow-plough

Country Status (5)

Country Link
DK (1) DK152300C (en)
FI (1) FI69167C (en)
NO (1) NO144712C (en)
SE (1) SE420855B (en)
WO (1) WO1980001579A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793208A (en) * 1985-03-13 1988-12-27 Societe Look Crank-gear for bicycle or similar locomotion vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1428615A (en) * 1920-05-14 1922-09-12 William C Speer Snowplow
US2904904A (en) * 1956-01-04 1959-09-22 Wausau Iron Works Adjustable snow plow
US3115715A (en) * 1962-06-07 1963-12-31 Charles A Baldwin Snow plow attachment
DE1232606B (en) * 1965-04-27 1967-01-19 Dr Gottfried Reissinger Space for snow plows
DE1658390A1 (en) * 1966-04-04 1970-08-13 Ilo Karijo Device for removing snow and other debris
DE2519112B2 (en) * 1975-04-29 1978-07-13 Gottfried Dr. 8124 St Heinrich Reissinger Arrangement of a scraper on the ploughshare of a road clearing device, in particular a snow plow

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1428615A (en) * 1920-05-14 1922-09-12 William C Speer Snowplow
US2904904A (en) * 1956-01-04 1959-09-22 Wausau Iron Works Adjustable snow plow
US3115715A (en) * 1962-06-07 1963-12-31 Charles A Baldwin Snow plow attachment
DE1232606B (en) * 1965-04-27 1967-01-19 Dr Gottfried Reissinger Space for snow plows
DE1658390A1 (en) * 1966-04-04 1970-08-13 Ilo Karijo Device for removing snow and other debris
DE2519112B2 (en) * 1975-04-29 1978-07-13 Gottfried Dr. 8124 St Heinrich Reissinger Arrangement of a scraper on the ploughshare of a road clearing device, in particular a snow plow

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793208A (en) * 1985-03-13 1988-12-27 Societe Look Crank-gear for bicycle or similar locomotion vehicle

Also Published As

Publication number Publication date
SE420855B (en) 1981-11-02
DK334880A (en) 1980-08-07
NO144712C (en) 1981-10-21
DK152300C (en) 1988-07-11
FI69167C (en) 1985-12-10
DK152300B (en) 1988-02-15
FI69167B (en) 1985-08-30
SE8005524L (en) 1980-08-04
NO790355L (en) 1980-08-06
NO144712B (en) 1981-07-13
FI800312A7 (en) 1980-08-06

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