US2381973A - Safety device for disk plow hangers - Google Patents

Description

Au.14,1945. G. REGOi 2,3 1,973

SAFETY- DEVICE FOR DI'SK PLOW HANGERS Filed March 19, 1943- 2 Sheets-Sheet 1 INVENTOR. 1 M Gamma-Ross E60 Aug. 14, 1945. Es. R. EGO 2,381,973

- SAFETY DEVICE FOR DISK PLOW HANGERS Filed March 19, 194:5 zsheets-sheepz IINVENTORI;

GEORGE" ass 00 I BY) hrrogusr Patented Aug. 14, 1945 y y .si nor to Massey-HarrisQCo Ltd Toronto, I 1 5 .Ontario;Ca nada,a limited company of Canada The present invention 'relates to a' safety device for: disk plows and the-like, 'wherein" depending .hangers: are rigidly secured to the main frame of'the device and the disk or earth working means iseither rotatably or rigidly securedf-toa bracket which lies on the side of thedepending hanger lhaving 'apivotabconnection' to the bottom of the 'depending h'anger andb'reakable means at the top 50f. the bracket for holding the bracket into working. position on tIie' hangeIi th'e breakable'mjeans :and pivot being adapted toperm-it the earthworkin'g member-toswing' back on the pivot and ride overa-seriousobstriictiorr. a

, :.1An object of my invefition'is to provide a breakable' block savings known and uniform breakin strength and'use' tliislil'dck as a'mean's for holding the earth working member in working' 'position.

A further Ob-ject of" my invention is to pivot a bracket on which the earth working member is mounted to the lower end of the depending hanger by means of a bolt and supply a block which lies on the forward lower edge of the depending hanger, the block having a curved front surface which lies against a. raised portion on the bracket, the curve being preferably on a radius with the pivot so the block takes the thrust which would otherwise be taken by the pivot.

Generally stated, an object of my invention is to provide a simple low cost breakable means which will release the earth working member when companying drawings in which:

Fig. 1 is an enlarged partially sectioned view of one form of my invention wherein a plow disk is shown rotatably mounted on a bracket.

Fig. 2 is a perspective view of the device as shown in' .Figure 1 showing the bracket mounted on the depending member and in its working position, the view being taken at a right angle to the side of the depending member.

Fig. 3 is a view of the device shown in Figure 2 in a position after having met an obstruction serious enough to break the breakable block, but taken from a point somewhat in rear of the view point in Fig. 2. 1

Fig. 4 is a. sectional view of the depending member taken on line 44 of Figure 2 showing the parts in operating position.

Fig, 5 is a P rspective view of the breakable block.

appear.

Fig. 6 is an-elevationalside view of the thrust *block.

7 is a rear view of the thrust block.

- i Fig; 8 is a fractional view of the main frame or adiskplow or the like, illustrating the bracket and depending member secured theret'o.' I

" Asthus'i'llustrated, the main frame of the plow is designated by'numeral ID, the upper portion of a hanger is designated bynumeral II and its depending member is designated bynumeral l2, member or plate I I being'rigidly held to member III by means of two or more spaced bolts l3. Mem- 'ber lzis providedwi-th an aperture I4 near its lower end for a purpose which will hereinafter In Figures 1,' 2"and 3, I illustrate aplow disk l5 suitably securedto a bracket 16 which is rotatably mounted on'thelower end of a bracket l1 in a manner too well known to require further description.

Bracket I1 is provided with'a flat surface l8 which is adapted to lie on the side of member l2 as illustrated in Figures 2', 3 and 4 and having an opening as at l9 which registers with opening 14 in member l2 so these two members may be secured together by means of a, pivot bolt 20.

I On the forward edge of bracket I1, I provide a flange 2| arranged so when the bracket is in working position (see Figures 2' and 4) at least the upper end of flange 2| lies against the forward edge of member l2.

Near the upper end of bracket I1, I provide a groove 22 and in line with this groove, I position a bolt 23 which is adapted to hold member l2 snugly against surface l8. A breakable block 24 is provided through which a bolt 26 extends and is positioned as shown in Figures 2 and 4. Breakable block 24 is shaped as illustrated in the various figures, one side resting on member-l1 as at 25, the other side resting on the rear edge of member I2 as clearly illustrated in Figure 4.

Block 24 is provided with a projection 21 which lies along side member I2 so as to preventits turning on bolt 26 relative to member l2. When bolt 26 is made taut, member l2 will be held firmly against flange 2! and the device will be in working position as shown in Figures 2' and 4.

Flange 2| near its lower edge is enlarged and cut-away on a curve, preferably on a radius with aperture l9 as at 28 having a small groove 29 at its bottom.

I provide a thrust block 30 with a shape as illustrated in the various figures having a flange 3| which fits loosely in groove 29 so the block will be held from moving transversely out of powhich has a definite breaking strength, is cheap and easily replaced.

Referring now to Fig. 2, it is :assumed that bolt 23 is adjusted so it barely holds members l2 and I! together. Bolt 20 is not'very tightly-adjusted so that when the lower portion'of disk 'I5'meets a serious obstruction and the plow continues" its forward movement, block 24may break' so the disk and its bracket may assume the position shown in Fig. 3, or whatever position is necessary tocausenthe disk to ride, over the obstruction, thus avoiding breaking some expensive part of thegdevicer; :It;wi1l be understood that member 241s very inexpensive and thatthe user will have a numberof them on hand a replacements.

Clearly manv-minor detail changes may be made. in the present invention, without departing frornthe spirit and scope of the-appendediclaims.

. Having thus:shown and describedmyinvention,- I;claim-:a

, 1. A device of the class described, comprising a frame;ha,ving a depending member, a bracket having, an earth working membensecured to its lower end, the ;up,p er en d,being adapted to lie on the side of said depending member, a bolt forming a ,transversepivotal connection between the bottom, of asaid depending member and said bracket a breakable block detachably secured to the up per end of said-,bracket and at a distance from said bolt, one side overhanging the rear edge of said depending member and being adapted to hold said bracket in normal operating position, whereby when said earth working member meets a serious obstruction, said block will break and permit said .earth working device to swing rearwardly on said bolt as an axis and ride over the str ct on. 1

2. A, device as recited in claim '1 including;

'a transversely extending projection on said bracket positioned in front of said depending member forming a pocket, a block positioned in said pocket and filling the space therein, the forward edge ofthe block and the rear edge of the "pocket being on a radius with said pivot bolt, whereby the block will take the thrust between said depending member and bracket in various positions of the bracket.

' depending member, a bolt forming a transverse pivotal connection between the lower end of said depending member and said bracket, a breakable block detachably secured to the-upper end ,of said brack t a5distance from said bolt, one

side overhanging, the rear, edge of said depending member and being adapted tovnormally hold said bracket in operating-position, whereby when said disk meets a serious obstruction, said block will break and permit the disk to [swing .rearwardly and ride ov er the obstruction, another bolt positioned-adjacent said -block adapted'to. slidably hold the upperv end of said bracket to said depending member. I

' GEORGE ROSS EGO.

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