US2317680A

US2317680A - Snowplow

Info

Publication number: US2317680A
Application number: US447827A
Authority: US
Inventors: Michael F Fitzpatrick
Original assignee: Individual
Current assignee: Individual
Priority date: 1942-06-20
Filing date: 1942-06-20
Publication date: 1943-04-27
Anticipated expiration: 1960-04-27

Description

April 27, 1943. M. F. FlTzPATRlcK SNOW PLOW Filed June 20, 1942 2 Sheets-Sheet l W, Q rl INVEN-roR MICHAEL E FITZPA TR/CK l "fav m ATTORNEYS April Z7, 1943.

M. F. FITZPATRICK SNOW PLOW Filed June 20, 1942 2 Sheets-Sheet 2 ATTORN EYS Patented Apr. 27, 1943 UNITED STATES PATENT OFFICE sNowrLow Michael F. Fiapamk, Brooklyn, N. Y. appucaaonrune zo, 1942, serai No. 447,821

(ci. .3v-42)' 3 Claims.

My invention relates to a snow lplow and more particularly to a snow plow to be carried by a truck or similar vehicle and adjustable angularly relatively to the vehicle.

At the present time, snow plows are often carried at the front of a truck and the truck is moved forward so as to plow or scrape the snow up into piles for subsequent removal. It is highly advantageous to have a plow which is adjustable angularly to facilitate the plowing of streets and particularly portions of streets between parked cars.

It is an object of my invention, therefore, to provide a snow plow which is readily adjustable in an angular direction.

It is another object to provide a simple, sturdy. easily adjustable means for changing the angular position of a snow plow.

Other objects and various features of novelty and improvement will be hereinafter pointed out or will become apparent to' those skilled in the art.

In the drawings which show, for illustrative purposes only, a preferred fonn of the invention- Fig. 1 is a plan view of a snow plow, illustrating features of the invention, the plow being shown in angular position;

Fig. 2 is an end View of the plow shown in Fig.

1, the plow being shown in position at right angles to the direction of travel;

Fig. 314s 'ap secti'onal view similar togli; 2, the

-lw being shown inl angular position as `in Fig. 1;

Fig. 4 is a fragmentary view on an enlarged scale, illustrating a detail;

Fig. 5 is a fragmentary plan view of a pivotal connection to the plow member; and

Fig. 8 is a fragmentary sectional view, taken substantially in the plane of the line -l of Fig. 3, and illustrating the same parts as Fig. 5 but in different positions.

My improved snow plow is designed to be carried by a truck or similar vehicle, only the front carrying structure of the truck being shown. Any suitable carrying structure may be attached to or form part of the truck and which for illustration is represented as a sturdy structural steel framework 5. The snow plow is supported by a of pivot bolts 8-8 so that the entire support may swing upwardly about a horizontal axis coincident with the pivots 8-8.

The plow member, designated generally 9, may be of any desired form suitable for its purpose. The plow member 9 is movably secured to the support so as to permit swinging in an angular direction and preferably also a limited tipping. Therefore, one portion of the plow member is preferably :pivoted directly to the support and is capable of movement relatively thereto only in an angular and in a tipping direction. The plow at a point spaced from the support pivot is secured to an adjustable part. In the form shown, such adjustable part is in the form of a bracket I0, which comprises a relatively long, substantial body slidable on the way I I of the leg 6 and held in sliding relation thereto as by means of a cap plate I2 secured to the leg 6 and spaced therefrom so as to provide a housing for slidably holding the bracket I0 in place. The bracket I0 is held in various positions of adjustment relatively `to the support as by means of a sturdy pin I3 passing through an aperture in the bracket I0 and through apertures Il-II in the leg 8 and also in the cap plate I2 in the position of rear adjustment. In the specific form illustrated, the bracket has a depending lug I5 which nts between the legs of spaced apart angle irons IG-IS secured to the back of the plow member.A A pivot 1 pin II may be held in the angle legs I6 and Y pin I1 so that there 'will be no substantial bindpart of the truck or framework 5, preferably on extending legs of angle members 6-6 are pref l erably pivoted to the frame part as by means "asses through an aperture-1 Bein the lug rv'l'he aperture I8 is preferably 'at loose flt over the pivot ing'no matter whether the plow is in the angular -position shown in Figs. 3 and 6 or in the position shown in Figs. 2 and 5. 'I'hat portion of the plow which is pivotally carried on the support at the end opposite the adjustable end may be supported from the support by means such as a pin which could be a duplicate of the pin I'I. Thus, the connection of the Iplow member -9 to the support and to the bracket III is such as to permit the swinging or angular positioning of the plow member relatively to the support and so as to permit tipping of the plow member about a horizontal axis defined by the pin or pins II.-

To further support the plow, the bracket Ill` may have an upstanding arm or lug I9, which serves as an abutment or support for the upper `portion of the plow member 9. The upper porltion of the plow member may carry a pair of upstanding lug or arm I9. Upper and lower bearing plates 22--22 are secured to the .straps 2| between the yoke arms 20. A pivot pin 23 extends down through the yoke arms and through the plates 22, thus pivotally securing the plow to the strap 2 I. A sturdy compression spring 24 is interposed between the bottom of the U-strap 2| and the head 25 of abolt or other holding means passing through the bottom of the strap 2| and the upstanding arm I9. A head or nut 26 on the bolt may ilt in 'a counterbore in the arm I9. When the plow is tipped about the horizontal axis represented by the pivot pins I1, the strap 2| will be pulled away from the arm I9, against the resistance of the compression spring 24. A part adjacent the opposite end of the plow may be provided with a resilient tip-permitting mechanism identical with that just disclosed, except that instead oi having the U-strap 2| abutting against an adjustable bracket arm I9. the strap may abut against any suitable abutment such as an angle iron 21, which serves also as an abutment for the head or nut on a bolt passing through the center of a spring, all as will be understood.

It will be seen that, when it is desired to move the plow member from the right angular position, as shown in Fig. 2 and in dot-dash lines in Fig. 1, to the angular position shown in full lines in Fig. 1 and in Fig. '3, it is only necessary to remove the pin I3 and swing the plow to the desired adjusted angular position. The pin I3 is then replaced in diierent holes so as to hold the bracket and the plow in such adjusted position. The plow may tip slightly (as when striking an obstruction in the street) no matter whether it is in angularly adjusted position or in the right angular position.

'I'he entire plow and support assembly is preferably arranged to be raised as a unit during such times as the plow is not in use. In the form shown, the support is provided with upstanding lugs 28-28. The truck frame part 5 may carry at opposite sides hydraulic jack cylinders 29-29, plvotally secured thereto, as at 3U. The piston rod 3| of each jack may carry xed heads or washers 32-32, the relative positions of which may be adjustedas by means of a nut 33 screwed on the end of the rod 3|. A pivot sleeve 34 slidable on the rod is located between the washers 32-32 and resiliently held between such Washers as by means of a pair of compression springs 35-35. Each pivot sleeve 3l is pivotally secured, as by means of a pin 36, to the pivot lugs 2B on the plow support, as will be understood. Thus, during normal operation, the entire plow and play so that the piston rod 32 is retracted into the cylinder, thus raising the entire plow and support assembly.

While the invention has been described in considerable detail and a preferred form illustrated, it is to be understood that various changes may be made within the scope of the invention as defined in theppended claims.

I claim:

1. In a device of the character indicated, a

support, a plow member, means for pivotally supporting a lower part of said plow member on said support for movement about a vertical axis, resilient means connecting said support and said plow member at a point above said lower part, an adjustable bracket member carried by said support, means for holding said bracket member in various positions of adjustment on said support, means for movably securing said bracket tosaid plow member at a lower part of the latter, and means for securing said bracket to an upper part of said plow member, for the purpose described.

2. In a device of the character indicated, a support, a plow member, means for. movably securing said plow member to said support to permit angular movement of said plow member relatively to said support, a bracket adjustably carried by said support, means for holding said bracket in various positions of adjustment on saidsupport, means for pivotally seeming a lower portion of said plow member to said bracket, an upstanding ann on said bracket, and means for resiliently securing an upper part of said plow member to said upstanding arm on said bracket.

3. In a device o1' the character indicated, a support, means for pivotally carrying said support on a truck for swinging about a horizontal axis, a plow member, means for resiliently securing said plow member and support to each other, a bracket adjustably carried by said support, means for securing said bracket in various positions of adjustment on said support, means for resiliently securing saidbracket to said plow member, and means for resiliently supporting said support and plow member carried thereby in operative position.

MICHAEL F. FITZPA'I'RICK.