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Publication numberUS3477149 A
Publication typeGrant
Publication dateNov 11, 1969
Filing dateDec 7, 1967
Priority dateDec 7, 1967
Publication numberUS 3477149 A, US 3477149A, US-A-3477149, US3477149 A, US3477149A
InventorsWagner Charles H
Original AssigneeWagner Charles H
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Snow plow moldboard with resilient scraping blade
US 3477149 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Nov. 11, 1969 H. WAGNER 7 SNOW PLOW MOLDBOARD WITH RESILIENT SCHAFING BLADE Filed Dec. 7, 196? HHH Hum 'muln FIEI Hill:

67/194 155 b. All) Gil/1 Arron/5r;

United States Patent 3,477,149 SNOW PLOW MOLDBOARD WITH RESILIENT SCRAPING BLADE Charles H. Wagner, 4920 10th Ave. S., Minneapolis, Minn. 55417 Filed Dec. 7, 1967, Ser. No. 688,865 Int. Cl. E01h /06; A01b 15/00; E02f 3/76 U.S. CI. 3750 3 Claims ABSTRACT OF THE DISCLOSURE A road clearing blade to be carried on the moldboard of a snow plow being wedge-shaped in horizontal section formed of a tough hardened rubber-like abrasive resistant material being sufficiently resilient to resist nicking and breaking and having wear resistant inserts for bottom surface reinforcement.

Background and summary of the invention The conventional metal snow plowing blade carried on a moldboard is subject to damage by engagement with curbs and with hard ice projections. The ground engaging edge of a metal blade wears down rather rapidly requiring frequent replacement of the blade. It is desirable to have a blade having the effectiveness of the rigidity of a metal blade but having longer lasting usefulness.

With respect to the related patented subject matter known to the inventor, the U.S. Letters Patent No. 3,028,-

692 to Brock shows a rubber moldboard sandwiched for support between a pair of rigid strip members and having a scraping edge and extending beyond said strips to form protective ends. Here the moldboard is formed of a combination of hard and relatively soft rubber. The U.S. Letters Patent No. 2,061,585 to Meyer shows the use of a relatively soft rubber strip for clearing slush from a surface. The U.S. Letters Patent No. 3,090,140 to Trane shows a flexible strip having a rigid backing or supporting member, and U.S. Letters Patent No. 3,126,- 652 to Reissinger shows a slush clearing appliance formed of old rubber tires underlying a moldboard.

The construction and particular configuration of the invention herein is clearly distinguishable from the above art.

It is an object of this invention to provide a scraping blade to be carried on a moldboard and being formed of a tough rubber-like material having sufficient rigidity for snow and ice scraping or clearing purposes, being sufiiciently yielding to resist nicking and breaking and having wear resistant reinforcing members in its ground engaging surface.

It is another object of this invention to provide a rubber-like scraping blade such as of polyurethane of sufiicient hardness and having vertically disposed reinforcing members disposed therein integral therewith to provide stiffness and wear resistance to said blade.

These and other objects and advantages of the invention will be set forth in the following description made in connection with the accompanying drawings in which like reference characters refer to similar parts throughout the several views and in which:

FIG. 1 is a view in perspective showing the invention in operating position;

FIG. 2 is a view in vertical section on a somewhat enlarged scale taken on line 2-2 of FIG. 1 as indicated;

FIG. 3 is a view of the invention in front elevation;

FIG. 4 is a bottom plan view of the invention; and

FIG. 5 is a view in vertical section on an enlarged scale taken on line 5--5 of FIG. 3 as indicated.

3,477,149 Patented Nov. 11, 1969 ice Description of a preferred embodiment Referring to the drawings, a conventional type of moldboard for a snow plow such as of a road clearing apparatus is indicated generally by the reference numeral 10. Supporting members 12 are indicated by which said moldboard will be mounted onto or carried by an appropriate vehicle.

The invention herein indicated generally by the reference numeral 15 comprises a scraping blade to be used in connection with said moldboard.

Said blade 15 is in the form of an elongated plate member rectangular in elevation as shown in FIG. 3, and being substantially rectangular in vertical cross section. Said blade in the embodiment disclosed is wedgeshaped in horizontal section tapering from the end portion 17 to the end portion 18. Said thicker end portion 17 is the curb end of the blade and the end portion 18 is the end portion of the blade which will travel remote from the curb. The moldboard and said blade thereon will be biased or angled with respect to the direction of travel with said end portion 18 being the forward or leading end portion. The snow gathered will accumulate along the blade increasing in volume or mass in the direction of said curb end portion 17 of said blade. Hence said end portion 17 is the heavier and sturdier end of said blade.

For the purpose of stiffening said blade and increasing the wear resistance of its ground engaging surface 19, a plurality of reinforcing members 21 are centrally vertically disposed and imbedded or molded within said end portion 17 to be integral with said blade and to be coplanar with its bottom ground engaging surface. Said reinforcing members will be spaced longitudinally of said 'blade. It is within the inventive concept herein to have them spaced along the full length of said blade. Said reinforcing members are here indicated as being formed of steel cable but may be formed of any suitable rod members having a high degree of resistance to abrasion or wear.

A plurality of spaced transverse slots 25 are formed through said blade allowing for height adjustment with respect to the bolts 26 disposed therethrough and through aligned apertures in said moldboard to secure said blade in operating position.

As to the specific composition of said blade, an essential element of the invention herein lies in providing a non-metallic scraping blade formed of a material having superior qualities to metal in having greater resistance to wear and to nicking and breaking, and to be free from being permanently deformed as by bending especially along the scraping edge. A very suitable rubber-like material has been found in polyurethane rubber of appropriate hardness which is very satisfactory when on the order Durometer. The design of the blade places its greatest stiffness in the area handling the greatest work load and thereby reducing the bulk of the blade along its length. Polyurethane rubber molded of polyurethane resins provides a material of great strength and toughness having high abrasive resistance and sufficient resilience to be resistant to chipping or nicking and breaking of the scraping edge.

As shown, said blade is mounted onto the forward face of the moldboard with its lower or scraping edge being positioned to be somewhat below the bottom edge of said moldboard.

Thus it is seen that there has been provided a simply constructed scraping blade having superior use characteristic with respect to a conventional commercially used metallic scraping blade.

It will of course be understood that various changes may be made in the form, details, arrangement and proportions of the parts, without departing from the scope of the invention herein which, generally stated, consists in a device capable of carrying out the objects above set forth, in the parts and combinations of parts disclosed and defined in the appended claims.

What is claimed is: 1. A snow clearing blade in connection with a moldboard carried by a snow plowing vehicle comprising an elongated plate-like member having a length substantially the length of said moldboard being substantially rectangular in vertical sec-tion and tapering in thickness from the curb end of said blade to the other end thereof, said blade being formed of a relatively hard rubberlike material having high abrasive resistance and sufiicient resilience to be resistant to nicking and breaking, a plurality of elongated wear resistant reinforcing members disposed within said blade to be coplanar with the bottom surface thereof, and means mounting said blade on the forward surface of said moldboard.

with.

References Cited UNITED STATES PATENTS 2,061,585 11/1936 Meyer 37-42 ROBERT E. PULFREY, Primary Examiner EUGENE H. EICKHOLT, Assistant Examiner US. Cl. X.R.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2061585 *Apr 2, 1935Nov 24, 1936Meyer Edward BTrack-clearing implement
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3666020 *Nov 18, 1970May 30, 1972Hess Robert VDrags for snowmobile trails
US3773375 *May 8, 1972Nov 20, 1973G NehlsSnow removal device
US3808714 *Jun 3, 1970May 7, 1974Reissinger GDouble bladed snowplow with overload release
US3889018 *Aug 1, 1973Jun 10, 1975Ethyl CorpMethod of simultaneously coating the opposite sides of a paper web
US3908590 *Mar 16, 1973Sep 30, 1975Ethyl CorpOpposed blade coater
US4024653 *Mar 23, 1976May 24, 1977Caleb G. MorrisBumper blade with tie-down attachment
US4149744 *Feb 5, 1978Apr 17, 1979The Union Fork & Hoe CompanySnow shovel
US4248466 *Nov 13, 1978Feb 3, 1981Carper William BSnow scoop with wear strip along lip and method of attaching the wear strip in a blow molding process
US4288932 *Jan 28, 1980Sep 15, 1981Kueper WalterSnow removal bar for the snow removal plate of a snow plow
US4347677 *Mar 18, 1981Sep 7, 1982Gummi Kuper Gmbh & Co. KgSnow removal bar for the snow removal plate of a snow plow
US4590694 *Feb 6, 1985May 27, 1986U.S. Highway Products, Inc.Snow plow with bar reinforced deformable blade
US4709492 *Jul 10, 1986Dec 1, 1987Gordon WatsonPushing apparatus, and methods of constructing and utilizing same
US4723609 *Dec 30, 1985Feb 9, 1988Curtis Floyd FDouble bladed combination scraper
US4873775 *Nov 17, 1987Oct 17, 1989Richey Stephen JVehicular attachment system for a snowplow or the like
US5075985 *Aug 6, 1990Dec 31, 1991Mensch Donald LOffal scraper
US5611157 *Sep 20, 1995Mar 18, 1997F & B Enterprises, Inc.Wear pad assembly
US5638617 *Jan 30, 1996Jun 17, 1997Her Majesty The Queen In Right Of Canada, As Represented By The Ministry Of Transport Of The Government Of QuebecSnowplow equipment for road vehicle
US5743032 *Jan 24, 1994Apr 28, 1998Vauhkonen; PerttiPlough blade arrangement
US5746017 *Apr 5, 1995May 5, 1998Scana Staal AsPloughshare
US6256910 *Sep 29, 1999Jul 10, 2001James G. GrozdeSnowplow blade extension device
US6315056Jul 28, 2000Nov 13, 2001Desmond L. RansomResilient scraping blade attachment
US6817118Mar 31, 2003Nov 16, 2004Charles M. SchmeichelSelf-adjusting snow plow
US6922924Oct 16, 2003Aug 2, 2005Burke Truck & Equipment, Inc.Plow cutting edge
US7131221May 19, 2004Nov 7, 2006Agri-Cover, Inc.Self-adjusting snow plow
US7198687 *May 3, 2004Apr 3, 2007Giles A. Hill, IIISqueegee blade
US7472499 *Nov 3, 2006Jan 6, 2009Agri-Cover, Inc.Snow plow having pivoting mechanism
US7603798May 7, 2004Oct 20, 2009Agri-Cover, Inc.Self-adjusting snow plow
US7627965Nov 3, 2006Dec 8, 2009Agri-Cover, Inc.Plow blade having integrally formed attachment channel
US7658021Nov 15, 2004Feb 9, 2010Agri-Cover, Inc.Self-adjusting snow plow
US7669353 *Nov 3, 2006Mar 2, 2010Agri-Cover, Inc.Snow plow having hitch tongue connecting member
US7676962Nov 3, 2006Mar 16, 2010Agri-Cover, Inc.Snow plow having reinforced mold board
US7676963Nov 3, 2006Mar 16, 2010Agri-Cover, Inc.Snow plow including mold board having back plate
US7676964Nov 3, 2006Mar 16, 2010Agri-Cover, Inc.Snow plow having wear minimizing apparatus
US7681335 *Nov 3, 2006Mar 23, 2010Agri-Cover, Inc.Snow plow having attachable biasing member
US7703222Nov 3, 2006Apr 27, 2010Agri-Cover, Inc.Snow plow having hitch tongue and pivoting mechanism
US7707753Nov 3, 2006May 4, 2010Agri-Cover, Inc.Multifunctional plow blade positioning apparatus and method
US7735245Nov 3, 2006Jun 15, 2010Agri-Cover, Inc.Snow plow having catch structure
US7735247Nov 3, 2006Jun 15, 2010Agri-Cover, Inc.Snow plow for all terrain vehicle
US7743534Nov 3, 2006Jun 29, 2010Agri-Cover, Inc.Snow plow having two-piece mold board
US7784199Nov 3, 2006Aug 31, 2010Agri-Cover, Inc.Snow plow having pivotal mounting apparatus
US7874085Mar 16, 2010Jan 25, 2011Winter Equipment CompanyPlow blade and moldboard shoe
US8037625Jul 28, 2010Oct 18, 2011Agri-Cover, Inc.Snow plow having pivotal mounting apparatus
US8069590 *May 27, 2010Dec 6, 2011Agri-Cover, Inc.Snow plow having limiting member
US8070198 *Nov 2, 2008Dec 6, 2011Patrick Richard BurkeManual article removal apparatus
US8191287Mar 16, 2010Jun 5, 2012Winter Equipment CompanyElastomeric plow edge
US8191288Nov 2, 2006Jun 5, 2012Pro-Tech Manufacturing And Distribution, Inc.Reversible snow pusher and coupler
US8621769 *Nov 2, 2006Jan 7, 2014Pro-Tech Manufacturing And Distribution, Inc.Snow pusher for ice and snow removal
US8793906Oct 22, 2012Aug 5, 2014Meyer Products LlcRotationally molded snowplow assembly
US8844173May 4, 2012Sep 30, 2014Shurtech Brands, LlcElastomeric plow edge
US8875419Jul 25, 2011Nov 4, 2014Agri-Cover, Inc.Snow plow
US8944176 *Jun 13, 2011Feb 3, 2015Absolute Innovations, Inc.Implement and method for preparing and maintaining dirt arena footing
US8984778Mar 15, 2013Mar 24, 2015Ironhawk Industrial Distribution LLCPlow blade and method
US9151006Feb 7, 2013Oct 6, 2015Pro-Tech Manufacturing And Distribution, Inc.Material pusher with control system
US9290898Feb 18, 2013Mar 22, 2016Ironhawk Industrial Distribution LLCPlow blade damping device and method
US9297131 *Aug 31, 2011Mar 29, 2016Husqvarna AbTrailing shield for a snow removal device
US9428874Sep 5, 2014Aug 30, 2016Winter Equipment CompanyElastomeric plow edge
US20040040184 *Aug 30, 2002Mar 4, 2004Haas Theodore OttoInexpensive snowplow
US20040060200 *Mar 31, 2003Apr 1, 2004Schmeichel Charles M.Self-adjusting snow plow
US20040177534 *Oct 16, 2003Sep 16, 2004Jones Jayson D.Plow cutting edge
US20040216252 *May 3, 2004Nov 4, 2004Giles HillSqueegee blade
US20040250454 *Apr 23, 2004Dec 16, 2004Willem JagerSnowplow
US20060010723 *Jul 15, 2004Jan 19, 2006Haas Theodore OInexpensive lightweight single-blade snowplow
US20060045699 *Jul 21, 2005Mar 2, 2006Marks FarmsWaste removal apparatus and method
US20070151127 *Nov 3, 2006Jul 5, 2007Charles SchmeichelSnow Plow Having Slidleable Retention Apparatus
US20070256334 *Nov 3, 2006Nov 8, 2007Charles SchmeichelSnow plow having internally reinforced mold board
US20100109358 *Nov 2, 2008May 6, 2010Patrick Richard BurkeManual Article Removal Apparatus
US20100229432 *May 27, 2010Sep 16, 2010Agri-Cover, Inc.Snow plow having limiting member
US20110225854 *Mar 16, 2010Sep 22, 2011Winter Equipment CompanyElastomeric plow edge
US20110239492 *Mar 23, 2011Oct 6, 2011Hill Curt JGusset accessory mount
US20120234565 *Jun 13, 2011Sep 20, 2012Absolute Innovations, Inc.Implement and method for preparing and maintaining dirt arena footing
US20140196323 *Aug 31, 2011Jul 17, 2014Husqvarna Consumer Outdoor Products N.A., Inc.Trailing Shield for a Snow Removal Device
DE3239518C1 *Oct 26, 1982Apr 5, 1984Hans-Dieter RueschenschmidtClearing strip for snowploughs
DE3814240A1 *Apr 27, 1988Nov 9, 1989Kueper GummiClearing strip for the clearing blade of a snow plough
DE3814240C2 *Apr 27, 1988Sep 30, 1999Kueper GummiRäumleiste für den Räumschild eines Schneepfluges
DE29620976U1 *Dec 3, 1996Jan 30, 1997Maier WalterSchürfleiste für den Räumschild eines Schneepfluges
WO2000031346A1 *Oct 6, 1999Jun 2, 2000Kungsörs Plast ABWearing for snowploughs, road scrapers cutting edge or the like
WO2003041482A2 *Nov 12, 2001May 22, 2003Schmeichel Charles MA self-adjusting snow plow attachable to a vehicle
WO2003041482A3 *Nov 12, 2001Mar 20, 2008Charles M SchmeichelA self-adjusting snow plow attachable to a vehicle
Classifications
U.S. Classification37/233, 37/279, 172/701.3, 15/245
International ClassificationE01H5/04, E01H5/06
Cooperative ClassificationE01H5/061
European ClassificationE01H5/06B