US3587751A - Snowplough with adjustable blade - Google Patents

Snowplough with adjustable blade Download PDF

Info

Publication number
US3587751A
US3587751A US794643*A US3587751DA US3587751A US 3587751 A US3587751 A US 3587751A US 3587751D A US3587751D A US 3587751DA US 3587751 A US3587751 A US 3587751A
Authority
US
United States
Prior art keywords
blade
snowplough
support member
obstacle
axle
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 - Lifetime
Application number
US794643*A
Other languages
English (en)
Inventor
Alfred Schmidt Jr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ing Alfred Schmidt GmbH
Original Assignee
Schmidt Alfred Ing
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 Schmidt Alfred Ing filed Critical Schmidt Alfred Ing
Application granted granted Critical
Publication of US3587751A publication Critical patent/US3587751A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E01H5/063—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 by snow-plough blades tiltable for shock-absorbing purposes

Definitions

  • a snowplough includes a device which prevents Field of Search 37/41, 42, injury to the plough blade when the plough blade encounters a 44-50; 172/801-807, 71 1, 794, 265, 27], solid obstacle by moving the blade upward and downward or 266-268, 264 by tilting the same about a horizontal axis.
  • ATTORNEYS PATENTEUJUHZBIHYI 3587751 sum 2 BF 2' INVENTOR Wi x 7/11.?
  • the blade when encountering larger obstacles such as curbstones, for example, the blade is not able to rise over the obstacle because of the limited range of upward and backward movement of the protective device. When higher obstacles with steep front edges are encountered there is a probability of damage both to the blade and to the suspension device.
  • An object of the present invention is to provide a snowplough having a blade which is adapted for being continuously and automatically readjusted in response to conditions of the road surface.
  • Another object of the present invention is to provide a snowplough which is capable of overcoming lower obstacles on the ground without interrupting the clearing operation and which even when encountering higher obstacles can slip over the same without damage.
  • the above objects are attained by means in which the blade is combined with a conventional linkage having lower and upper pivot levers coupled with a support member and a tension spring element.
  • the lower pivot lever is inclined upward and the upper pivot lever downward in relation to the blade.
  • the support member is tiltably mounted on a horizontal axle extending parallel to the blade and the support member is held in working position by pressure responsive locking means which upon the application of a predetermined force become unlocked and allow the blade to tilt about the axle.
  • the blade of the snowplough of this invention can continuously adjust itself to an uneven road surface and slip over smaller obstacles thereupon. Immediately upon the overcoming of the obstacle, it restores its working contact with the road. At the same time, when encountering a higher obstacle, the snowplough blade according to the present invention, can evade the same by tilting the support member about the horizontal axle so that the entire blade arrangement is securely protected against damage.
  • the embodiment of the snowplough having a multisectional movable blade.
  • the blade sections are arranged side by side and linked together by a separate pivot lever linkage to corresponding support members tiltably mounted on a common horizontal axle or rod.
  • the blade arranged in this manner insures a particularly effective adjustment of the plough to various conditions of the road surface during the clearing operation.
  • the support members which are tiltably arranged on the axle are hold in a firm working position by means of shear pins or the like.
  • the shear pins are dimensioned so as to protect the blade against a predetermined counterforce.
  • protective spring means which are disposed between the axle and the support members. These spring means must be biased in such a way that the pressure against the lower portion of the blade will not cause the tilting of the support member prior to the displacement of the pivot levers to their uppermost limit position. In other words, the protective spring means must not act before the tension spring of the blade is set back along the entire path of movement of the blade linkage.
  • the support member can be provided with a lock pawl secured to the axle so as to unlock the former when a predetermined excess force is applied against the blade, thus permitting the support member to tilt about the axle.
  • the aforementioned lock pawl can be combined with an auxiliary restoring spring means which makes it possible that the tilted blade, as soon as a higher obstacle has been passed, returns together with its support member to the normal working position and the lock pawl becomes locked again.
  • FIG; 1 is a side elevational view of a snowplough of this invention in a working position
  • FIG. 2 illustrates the snowplough of FIG. 1 wherein the blade is in its uppermost position
  • FIG. 3 is a side elevational view of the snowplough of this invention having the blade divided into a number of blade sections whereby one of these blade sections is tilted by an obstacle;
  • FIG. 4 is a schematical plan view of a snowplough having a multisectional blade with a tilted end section;
  • FIG. 5 is a front elevational view of the device with the snowplough removed for purpose of clarity.
  • the snowplough consists of a blade I which is linked by an upper pivot lever 2 and a lower pivot lever 5 to a support member 4.
  • the support member 4 is tiltably supported on a horizontal axle or rod 5 which is parallel to the blade 1.
  • the horizontal axle 5 is rigidly connected with a retainer device 6.
  • the lower pivot 3 at the normal working position of the blade is inclined upward, in the direction from the support member toward the blade, so that when the lower edge of the blade encounters an obstacle the entire blade is moved backward and upwardly against the force of the tension spring 7 which is arranged between the upper portion of the blade and the horizontal axle.
  • the movement of blade 1 is delimited by two limit stops 8 and 9 which are integral with the side wall of the blade and which cooperate with the nose 10 which is integral with the axle 5 and which protrudes between the stops.
  • the nose It abuts, due to the action of tension spring 7, the upperlimit stop 8 (FIG. 1).
  • the pivotal arrangement of the levers 2 and 3 allows the blade to pass over a smaller obstacle OB having a height within the range of the distance between limit stops 8 and 9.
  • the nose l0 abuts the lower limit stop 9.
  • FIG. 3 shows another variation of the invention comprising a multisectional blade.
  • the blade sections 11, 11a are disposed side-by-side and are coupled through pivotable levers 2, 3 and 2a, 3a to respective support members 14, 14a.
  • the support members are disposed on a horizontal axle 15 which is firmly connected to the retainer means 16.
  • the retainer means 16 comprises pivotally mounted control arms 22 and 23 arranged for parallel movement on the attachment frame 25 of a carrier vehicle. The vertical movement of the retainer means 16 is controlled by the aid of a lifting device 24 which is hinged between an elevated portion of the retainer and the lower control arm 23.
  • the support members 14, 14a are tiltably supported on axle l and held at upright working position by shear means 17.
  • FIG. 4 shows in a plan view another modification of the multisectional blade.
  • Corresponding support member sections 14:: to He are coupled to the blade sections by pivotable levers and are supported on the axle 5 which is rigidly connected with the retainer means 6.
  • the right-hand support member 140 with blade section 11a is shown in a tilted condition which results after encountering a higher obstacle HOB at the border area of the road.
  • FIG. 5 discloses a torsion spring 27 on shaft 5, the spring being connected at one end to supporting member 4 and at the other end to the retainer device 6.
  • a plough which is adapted to be coupled to a vehicle, said plow including blade means, support means, upper and lower lever arm means pivotably connecting said blade means to said support means to provide for vertical movement of said blade means, means to limit said vertical movement to a predetermined distance, said lower lever arm means being inclined upward from the support means to said blade means, shaft means extending in a direction substantially parallel to said blade means and supporting said support means, means for maintaining said support means in a fixed rotational relationship relative to said shaft means when said blade means is at a height above the surface being plowed less than said predetermined distance and means for allowing said support means to freely rotate about said shaft means when the height of said blade above said surface exceeds said predetermined distance.
  • said support member sections include end sections and at least one section intermediate said end sections wherein the intermediate section is fixedly mounted to said shaft.
  • said shaft means includes an outwardly extending nose portion and said blade means includes a stop for engaging said nose portion when said blade means is at said predetermined height whereby the further elevation of said blade means results in said shaft means rotating relative to said support means, shearing said shear pin, and thereby allowing said support means to freely rotate about said shaft means.
  • said plow further includes means for urging said blade means downwardly into contact with the surface being plowed.
  • said urging means is a torsion spring operatively arranged between said blade means and said shaft means to force the blade against the road surface.
  • said plow further comprises retainer means for mounting said plow to a vehicle and wherein said maintaining means comprises a torsion spring operatively arranged between said support means and said shaft means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
US794643*A 1968-03-01 1969-01-28 Snowplough with adjustable blade Expired - Lifetime US3587751A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESC042045 1968-03-01

Publications (1)

Publication Number Publication Date
US3587751A true US3587751A (en) 1971-06-28

Family

ID=7436554

Family Applications (1)

Application Number Title Priority Date Filing Date
US794643*A Expired - Lifetime US3587751A (en) 1968-03-01 1969-01-28 Snowplough with adjustable blade

Country Status (6)

Country Link
US (1) US3587751A (de)
AT (1) AT281103B (de)
CH (1) CH469864A (de)
DE (1) DE1708665B1 (de)
FR (1) FR1559550A (de)
SE (1) SE339488B (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712383A (en) * 1970-10-21 1973-01-23 J Renahan Plow blade structure
US4907358A (en) * 1989-08-23 1990-03-13 Detroit Innovative Products Snowblade assembly
US4991323A (en) * 1989-11-14 1991-02-12 Standard Marketing System U.S.A., Inc. Combined snow plow winch device
US5697172A (en) * 1995-06-14 1997-12-16 Schmidt Engineering & Equipment, Inc. Trip edge snowplow
US6151809A (en) * 1997-03-12 2000-11-28 Altheide; Edward Rear mounted snowplow
US6408548B1 (en) 1997-03-12 2002-06-25 Charles E. Altheide Pivotal rear-mounted snowplow
US6606956B1 (en) * 2002-03-04 2003-08-19 Case, Llc Planter coulter apparatus with mechanical overload protection
US20040079002A1 (en) * 2002-10-29 2004-04-29 Douglas Dynamics, Inc. Snowplow assembly
US20050194161A1 (en) * 2004-02-24 2005-09-08 Tobin Jason T. Flip-over push/back-drag blade attachment for work vehicles
US20060000122A1 (en) * 2004-07-02 2006-01-05 Micozzi Albert M Plow protector
US20070084088A1 (en) * 2005-10-13 2007-04-19 Shepherd John D Plow
US20070128013A1 (en) * 2005-12-01 2007-06-07 Grant Hanson Apparatus protecting vehicle with bucket when bucket strikes fixed object
US20110041366A1 (en) * 2009-08-24 2011-02-24 Gappy Hamid A Snow plow towing hitch system
US8732988B2 (en) 2006-11-30 2014-05-27 Glenridge, Inc. Implement with linkage assembly and work assembly wherein work assembly has dynamic skid shoe and a scraping edge
US8881433B2 (en) 2006-11-30 2014-11-11 Glenridge, Inc. Implement attaching to a forward motion-producing machine for elevating an edge encountering an immovable object
US9085860B2 (en) 2012-09-04 2015-07-21 Universal Truck Equipment, Inc. Wing plow post
US9752293B2 (en) 2012-09-04 2017-09-05 Universal Truck Equipment, Inc. Wing plow post
US20180127936A1 (en) * 2016-11-07 2018-05-10 Aebi Schmidt Deutschland Gmbh Snow-clearing vehicle
US10053826B1 (en) 2014-12-12 2018-08-21 Alamo Group Inc. Wing plow apparatus
WO2021151215A1 (en) * 2020-01-31 2021-08-05 9091-4532 Québec Inc. Ground following snow plow attachment
EP4283047A1 (de) * 2022-05-23 2023-11-29 Reiter Kommunaltechnik GmbH Vorrichtung zum festlegen eines strassendienstgeräts an einem fahrzeug

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH583825A5 (de) * 1975-03-18 1977-01-14 Peter Konrad Ag
DE3542479A1 (de) * 1985-11-30 1987-06-04 Beilhack Maschf Martin Schneepflug
US5816744A (en) * 1996-04-08 1998-10-06 At & T Corp Underwater cable burial machine having tripable plows
AT409874B (de) * 2000-01-27 2002-12-27 Kahlbacher Anton Schneepflug
AT412003B (de) 2001-04-02 2004-08-26 Anton Kahlbacher Schneepflug mit einer aus mehreren scharsegmenten bestehenden pflugschar

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE859483C (de) * 1945-01-31 1952-12-15 Schneeraeumungs Maschinen A G Schneepflug
AT215468B (de) * 1960-01-16 1961-06-12 Bruno Etlinger Schneepflug
AT233627B (de) * 1960-10-19 1964-05-25 Howie Ltd J B Schneepflug

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712383A (en) * 1970-10-21 1973-01-23 J Renahan Plow blade structure
US4907358A (en) * 1989-08-23 1990-03-13 Detroit Innovative Products Snowblade assembly
US4991323A (en) * 1989-11-14 1991-02-12 Standard Marketing System U.S.A., Inc. Combined snow plow winch device
US5697172A (en) * 1995-06-14 1997-12-16 Schmidt Engineering & Equipment, Inc. Trip edge snowplow
US6151809A (en) * 1997-03-12 2000-11-28 Altheide; Edward Rear mounted snowplow
US6408548B1 (en) 1997-03-12 2002-06-25 Charles E. Altheide Pivotal rear-mounted snowplow
US6606956B1 (en) * 2002-03-04 2003-08-19 Case, Llc Planter coulter apparatus with mechanical overload protection
US20060005434A1 (en) * 2002-10-29 2006-01-12 Douglas Dynamics, L.L.C. Snowplow assembly
US20040079002A1 (en) * 2002-10-29 2004-04-29 Douglas Dynamics, Inc. Snowplow assembly
US6941685B2 (en) * 2002-10-29 2005-09-13 Douglas Dynamics, L.L.C. Snowplow assembly
US20050194161A1 (en) * 2004-02-24 2005-09-08 Tobin Jason T. Flip-over push/back-drag blade attachment for work vehicles
US7448453B2 (en) * 2004-02-24 2008-11-11 Tobin Jason T Flip-over push/back-drag blade attachment for work vehicles
US20060000122A1 (en) * 2004-07-02 2006-01-05 Micozzi Albert M Plow protector
US7143531B2 (en) * 2004-07-02 2006-12-05 Micozzi Albert M Plow protector
US20070084088A1 (en) * 2005-10-13 2007-04-19 Shepherd John D Plow
US7661210B2 (en) * 2005-10-13 2010-02-16 Shepherd John D Plow
US20090093934A1 (en) * 2005-12-01 2009-04-09 Grant Hanson Apparatus Protecting Vehicle With Bucket When Bucket Strikes Fixed Object
US20070128013A1 (en) * 2005-12-01 2007-06-07 Grant Hanson Apparatus protecting vehicle with bucket when bucket strikes fixed object
US8046939B2 (en) 2005-12-01 2011-11-01 Grant Hanson Apparatus protecting vehicle with accessory when scraping edge of accessory strikes fixed object
US8732988B2 (en) 2006-11-30 2014-05-27 Glenridge, Inc. Implement with linkage assembly and work assembly wherein work assembly has dynamic skid shoe and a scraping edge
US8881433B2 (en) 2006-11-30 2014-11-11 Glenridge, Inc. Implement attaching to a forward motion-producing machine for elevating an edge encountering an immovable object
US9080297B2 (en) 2006-11-30 2015-07-14 Glenridge, Inc. Implement with linkage assembly and work assembly wherein work assembly has dynamic skid shoe and a scraping edge
US20110041366A1 (en) * 2009-08-24 2011-02-24 Gappy Hamid A Snow plow towing hitch system
US8291622B2 (en) * 2009-08-24 2012-10-23 Gappy Hamid A Snow plow towing hitch system
US8671597B2 (en) 2009-08-24 2014-03-18 Hamid A. Gappy Snow plow towing hitch system
US9085860B2 (en) 2012-09-04 2015-07-21 Universal Truck Equipment, Inc. Wing plow post
US9752293B2 (en) 2012-09-04 2017-09-05 Universal Truck Equipment, Inc. Wing plow post
US10053826B1 (en) 2014-12-12 2018-08-21 Alamo Group Inc. Wing plow apparatus
US10196790B1 (en) 2014-12-12 2019-02-05 Alamo Group Inc. Wing plow apparatus
US10480141B1 (en) 2014-12-12 2019-11-19 Alamo Group Inc. Wing plow apparatus
US20180127936A1 (en) * 2016-11-07 2018-05-10 Aebi Schmidt Deutschland Gmbh Snow-clearing vehicle
WO2021151215A1 (en) * 2020-01-31 2021-08-05 9091-4532 Québec Inc. Ground following snow plow attachment
EP4283047A1 (de) * 2022-05-23 2023-11-29 Reiter Kommunaltechnik GmbH Vorrichtung zum festlegen eines strassendienstgeräts an einem fahrzeug

Also Published As

Publication number Publication date
AT281103B (de) 1970-05-11
FR1559550A (de) 1969-03-07
CH469864A (de) 1969-03-15
SE339488B (de) 1971-10-11
DE1708665B1 (de) 1971-11-11

Similar Documents

Publication Publication Date Title
US3587751A (en) Snowplough with adjustable blade
US4259794A (en) Snowplow
US3465456A (en) Blade for snowplows and similar devices
US4843744A (en) Snowplow
US7805862B2 (en) Float mechanism for material-moving implement
US5191729A (en) Trip apparatus for moldboard assembly
US5007654A (en) Truck step
US3866342A (en) Reversible snow plow attachment for wheeled vehicles
US3014289A (en) Snow plow
GB1591384A (en) Plough
GB2079126A (en) Agricultural machine attachable to the front three-point hitch of a tractor
US3799579A (en) Rear shield for rotary lawnmower
NL9100320A (nl) Landbouwwerktuig bestemd voor montage aan de voorzijde van een trekker.
US6363631B1 (en) Lateral plough
US1195271A (en) Assictrob to amebican
CA1136916A (en) Soil undercutter with pivotally mounted shank
US4459769A (en) Snowplow attachment
US4077141A (en) Tire protector assembly for a wheel loader
US4905770A (en) Shield assembly for a cultivator
US5775012A (en) Utility blade hitched to a vehicle
US4116280A (en) Spring reset mechanism
US3302728A (en) Plow safety standard
US5046565A (en) Blade and linkage mechanism with downdraft control
US3365822A (en) Snow ploughs
US3712383A (en) Plow blade structure