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Патент USA US3028779

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April 10, 1962
J. L. BRADSTREET
3,023,769
PORTABLE MACHINE FOR RECONDITIONING FARM IMPLEMENT
DIscs WHILE ON THE IMPLEMENT STRUCTURE
Filed Dec. 15, 1959
3 Sheets-Sheet 1
INVENTOR.
JOHN l_. BRADSTREET
wwwym
ATTORNEY.
April 10, 1962
J. |_. BRADSTREET
3,028,769
PORTABLE MACHINE FOR RECONDITIONING FARM IMPLEMENT
DISCS WHILE ON THE IMPLEMENT STRUCTURE
Filed Dec. 15, 1959
3 Sheets-Sheet 2
3
INVENTOR.
JOHN L. BRADSTREET
BY
ATTORNEY.
April 10, 1962
J L. BRADSTREET
3,028,769
PORTABLE MACHINE ‘FOR RECONDITIONING FARM IMPLEMENT
Filed Dec. 15, 1959
DISCS WHILE ON THE IMPLEMENT STRUCTURE
3 Sheets-Sheet 3
54
INVENTOR.
JOHN L. BRADSTREET
BY
ATTORNEY.
United States Patent once
3,028,769
.Patented Apr. 10, 1962
1
2
3,028,769
slightly in the rear end of the supporting plate 15. The
supporting plate 15 is preferably made of a piece of chan
nel iron having the legs 15a and 15b turned upwardly.
PORTABLE MACHINE FGR RECONDITIONHVG
FARM IMPLEMENT DHSCS ‘WHILE ON THE ]M
PLEMENT STRUCTURE
John L. Bradstreet, Dighton, Kans.
Filed Dec. 15, 1959, Ser. No. 859,607
1 Claim. (Cl. 76-892)
On the front end of the web of the channel 15 is a for
wardly extending lip like element 17 on which is rigidly
mounted an upwardly extending lip like element 17 on
which is rigidly mounted an upwardly extending stud 18
around which is revolvably mounted a collar 19 that is
held in place on the stud 18 by a washer 20 that is posi
This invention relates to an improvement in portable
disc rolling machines that may be taken to a piece of farm 10 tioned around the stud 18 and bears against the collar
19 and is retained in this position by means of a nut
machinery having ground working discs thereon and the
21 that is threaded on the upper end of the stud 18. The
disc rolling machine may be moved along the row of
collar 19 is provided with a laterally extending pin 22,
several discs and be brought into engagement with the
one end of which is rigidly attached (welded) to the collar
several discs, one at a time for disc rolling purposes.
This invention is an improvement over my previous Patent 15 19. The pin 22 slidably and revolvably passes through a
No. 2,888,844, issued June 2, 1959.
‘In farm machines of the kind mentioned it has been
found that for some reason, some of the discs have been
mounted olf center, or in using the machine some of the
bearing sleeve 23, the outer end of which projects beyond
the outer end of the bearing sleeve 23 and is retained
therein by means of a cotter pin 24 that passes through
a hole in the outer end of the pin 22, the ends of the
discs have worn out of round, etc., and this makes it di?i 20 cotter pin being spread to retain its position in the pin
22 and to bear against the outer end of the bearing sleeve
cult to roll or sharpen the discs in as much as the job of
23 as a means of retaining'the pin 22 in the bearing sleeve
rolling and sharpening the discs with my improved port
23 and the bearing sleeve 23 is rigidly attached (welded)
able disc rolling machine is done without removing the
to an elongated, inverted, V-shaped guide shoe 25, each
discs from the farm machine. Therefore it is an object
of my improved portable disc rolling machine to do the 25 end of each leg of which has a roller 26, 26b, 26a, 26a
transversely positioned therein, each of which rest on a
job or rolling and sharpening the discs and also com
long piece of tube material 27 which lays on the ground
pensate for the irregularities or off center mounting of the
and spans the distance of the spaced apart plow discs
discs.
that are to be sharpened.
A further object of my invention is to provide a disc
The foregoing described, structure forms the major
rolling machine of the kind mentioned that is simpli?ed in 30
working support for the machine and guide element for
construction, one that is lighter in weight, one that is
simpler and faster to use as well as one that is probably
the machine as the machine is moved from one disc to
another for sharpening purposes as will later be de
more sturdy and longer lived.
scribed. This supporting structure will also be retractable
These and other objects of this invention will be more
35 and disengageable from the ground for transport purposes.
fully described as this description progresses.
The machine is provided with a second platform plate
Now referring to the accompanying drawings in which
element 28 which consists of a channel element 28 hav
similar numerals of reference designate the same parts
ing its legs 28a and 23b turned downwardly, the plate
throughout the several ?gures of the drawings; FIG. 1 is
28 being adjustably spaced above the ?rst described sup
a top plan view of my improved machine.
FIG. 2 is a side view of the machine shown in FIG. 1. 40 porting plate 15. The two plates 15 and 28 are provided
with two pairs of similar leg elements 29, 29a, and 30
FIG. 3 is a detail sectional view through the machine,
and 36a, each leg element being the same in size and di
the View being as seen from the line Ill-III in FIG. 2
mension. The upper ends of the legs 29 and 29a are
and looking in the direction of the arrows.
pivotally connected, one to the front and one to the rear
FIG. 4 is a detail sectional view through the machine,
end portion of the channel leg 28a and the lower end of
the view being as seen from the line IV--IV in FIG. 2
the legs 29 and 29a are pivotally connected about the end
and looking in the direction of the arrows.
portions of the upturned channel leg 150. Similarly the
FIG. 5 is a detail sectional view through another part
upper ends of the legs 30 and 30a are pivotally connected
of the machine, the view being as seen from the line V—V
to the depending channel leg 28b and the lower ends of the
in FIG. 2 and looking in the direction of the arrows.
FIG. 6 is still another detail sectional View through a 50 legs 29 and 29a are pivotally mounted on the upturned
channel leg 15a, the lower ends of the legs 30 and 30a are
part of the machine, the view being as seen from the line
pivotally mounted on the upturned channel leg 15b.
Vl—-VI in FIG. 1 and looking in the direction of the
Transversely positioned and revolvably mounted in the
central portion of the depending channel legs 28a and 28b
is a tubular or pipe element 31, the ends of which pro
ject beyond the outer faces of the channel legs 28a and 28b
and on the portions of the pipe element 31, adjacent the
of the arrows.
.
outer faces of the channel legs 28a and 28b, the upper
FIG. 8 is a detail sectional view through that portion of
ends of the support legs 29a and 30a are rigidly attached
the machine, seen from the line VIII——VIII in FIG. 5 and
60 (welded) to the tubular pipe element ‘31. This forms
looking in the direction of the arrows.
the aforementioned pivotal mounting of the legs 29a and
FIG. 9 is a detail view of one of the raising and lower
arrows.
FIG. 7 is still another detail sectional view through
another part of the machine, the view being as seen from
the line VlI—VlI in FIG. 1, and looking in the direction
30a to the upper plate 23a and 28b.
ing mechanism of one of the machine platforms.
The device is further provided with an adjustment han
FIG. 10 is a detail, bottom plan view of the lower sup
dle element 32., one end of which is rigidly attached
porting plate of the machine, the view being as seen from
the line X-—X in FIG. 9 and looking in the direction of 65 (welded) to the pipe 31, the other end of the handle ele
ment 32 being swingable as indicated by the dotted lines
the arrows.
'
32a to rotate the pipe 31 and simultaneously swing the
In the drawings the machine is shown as having a lower
legs 29a and 30a to move the upper and lower platforms
supporting platform plate 15, the underside of which is
28 and 15, toward and away from each other, for pur
provided with a depending V-shaped rib-like stationing
element 16 that is positioned substantially on the rear 70 poses that will later be made obvious.
half of the plate 15 and spans the width of the plate 15
The device is provided with a pair of carrying wheels
and having the apex or point of the V terminating at, or
33 and 34 that are revolvably mounted, one on each of
3,028,769
3
4
the projecting end of the tubular or pipe element 31 and
are adapted to engage the ground and carry the entire
load of the machine when the two platform channel plate
to the channel 50 and the vertical wall 54 is provided with
a second vertical wall 55 that is spaced away from the
elements 15 and 28 are moved toward each other by the
movement of the handle element 32 as previously stated.
The channel element 28 is provided with a top element
35 which consists of a rod 35 positioned against the lower
edges of the channel legs 28a and 28b and is rigidly at- 1
tached (welded) thereto and the outer ends of the stop
element or rod 35 project beyond the outer faces of the 10
channel legs 28a and 2812 so that as the supporting legs
29a and 30a swing rearwardly, just beyond the perpendic
ular position they will engage the stop rod ends 35 so as
to stop further movement or swinging motion of the sup
port legs 29a and 30a.
The plate 28 is provided with a balancing mechanism
which consists of a long bolt 36 having a head 36a and
?rst vertical wall 54 and on the vertical wall 55 is carried
a bearing 56 in which is rotatably carried a second jack
shaft 57 which extends through the bearings 56 and sup
porting wall 55 and into the space 55’ and 54’. On the
outer end of the second jack shaft 57 is a second univer
sal joint structure 53 in which is seated the other end of
the drive shaft 49 whereby the drive shaft 49 will ro
tatably drive the jack shaft 57. On the inner end of the
jack shaft 57 and positioned between the two walls 54
and 55 is rigidly mounted a small sprocket 59 on the in
ner end of the drive shaft 57.
The roll device R is provided with a pair of bearing
sleeve elements 6!} and 61, each of which loosely ?ts in
holes 62 and 63 so as to permit movements of the outer
ends of the sleeves 60 and 61 toward and away from
each other. The sleeves 60 and 61 have notches 64 and
the bolt 36 slidably passes through the lower end por
65 on opposite sides thereof in which is ?tted opposite
tions of the supporting holes in the legs 15a and 15b.
The device is further provided with a balancing spring 20 edges of a notched plate 66 to retain the sleeves 60 and
61 in place. In each end of the sleeves 60 and 61 are an
37 that is positioned midway between the legs of the plat
anti-friction bearing 67 and in the sleeve 60 and carried
form plates 15 and 28.
by its respective bearings is a roll shaft 68, the inner end
One end of the spring 37 is attached to the tubular pipe
of which projects inwardly between the walls 54 and 55
element 31 and the other end of the spring element is at
and on the inner end of the shaft 68 is rigidly mounted
tached to the bolt 36 and there is enough tension in the
a large sprocket wheel 69 that is in alignment with the
spring to swing all the supporting leggs 29, 29a, 30 and
small sprocket wheel 59. A chain 70 passes around the
30a to their vertical position and thus support the two
small sprocket wheel 59 and the large sprocket wheel 69
platform plates 15 and 28 in their furthermost spaced
whereby the small sprocket wheel 59 will drive the large
apart position by swinging the lever handle 32 to the
dotted position 32a, the support legs 29a and 30a and 29 30 sprocket wheel 69 at a reduced speed.
Similarly a second roll shaft 71 is revolvably carried
and 39 will swing toward each other whereupon the up
in the bearings 67 in the sleeve 61 and the inner end of
per plate 28 will move downwardly until the wheels 33
the roll shaft 71 extends inwardly into the space between
and 34 engage the ground, whereupon the platform plate
the walls 54 and 55 and the inner end of the roll shaft 71
15 will be lifted from engagement with the ground and
is provided with an idler roller 72 that is rigidly mounted
the entire load of the machine will then be carried on the
on the inner end of the roll shaft 71 and is in alignment
wheels 33 and 34 and the rollers 26, 26a; 26b and 26c.
with the sprocket wheels 69 and 59 so that the chain passes
Also rigidly attached to the upper supporting plate ele
under the idler roller 72.
ment 28 is a pair of handle elements 38 that are mounted
On the outer ends of each of the roll shafts 68 and 71
on one end of a supporting shaft 39, the other end of which
is rigidly attached (welded) to the supporting plate 28 40 is rigidly mounted a roll element, parts of which are
and the machine may be lifted by these handles 38 for
adjustment purposes as will later be described.
The machine is further provided with a disc sharpening
roll device and an engine for driving the roll device. The
engine 40 and the general roll R mechanism drive are all
carried on the support plate 28 and consists preferably
of an internal combustion engine 40 having a drive shaft
41 which extends into a chain and sprocket case in which
a small sprocket 43 is rigidly mounted on the end of the
engine drive shaft 41.
The machine is also provided with a large chain
sprocket 44 that is rigidly mounted on one end of a short
jack shaft 45 which is revolvably carried in a bearing 46
that is rigid with the chain and sprocket case 42.
adapted to engage each other for disc rolling purposes.
On each bearing sleeve 60 and 61, adjacent the rolls
73 and 74 is a pair of downwardly projecting ear like ele
ments 75 and a pair of upwardly projecting car like ele
ments and between the downwardly projecting ear like
elements on each sleeve 60 and 61 is positioned a link ele
ment 77 and pins 78 and 79 slidably pass through
holes in the lower ends of the ear like elements 75 on
each sleeve element 60 and 61 and also slide through
holes, one in each end of the link element 77 to form a
positive pivotal link connection between the under sides
of the two sleeves 60 and 61.
The upper sides of the bearing sheeve holders are piv
otally connected with an adjustable connection compris
ing a link having an open link 80 having an opening 80/)
A sprocket wheel 44 is in the sprocket and chain case
and having a round pin hole 9a through one end of the
42 and is in alignment with the small sprocket 43 and a
link adjacent the big opening of the link. The end of the
chain 47 passes around the sprocket wheels 43 and 44
link having the round hole therein is ?tted between two of
whereby the small sprocket 4-3 will drive the large
the upwardly projecting ear like elements 76 on one of the
sprocket 44 at a reduced speed.
On the outer end of the jack shaft 45 is a universal 60 bearing sleeves 6G and a bolt 81 is slidably passed through
holes in the ear like elements 76 and the hole 80a in the
link to form a pivotal mounting for the link 80 on the
by the universal joint 48.
eating sleeve element 60.
The machine is provided with a rockable roll carriage
In the other end of the link 80 and in the opening 801)
C which consists of a channel base element 50 having up 65 is snugly ?tted a threaded nut 82 and the end portion
turned channel legs 50a and 50b. The machine is also
of the link 89 has a bore 83 therethrough that is in align
provided with a pair of link elements 51 and 51a, the upper
ment with the threaded hole in the nut 82.
ends of which are rigidly attached (welded) to the outer
The device is provided with a tension bolt 84 having a
faces of the rear end portions of the channel legs 50a
square head 84:: thereon and a thrust bearing 85 ?tted
and 50b and the link elements 51 and 51a extend down 70
joint sturcture 48 in which one end of a drive shaft 49 is
seated whereby the drive shaft 49 may be rotatably driven
wardly along the outer faces of the channel legs 28a and
28b of the channel plate 28 and are pivotally attached
thereto at the points 52 and 53.
The rear end of the channel 50 is provided with a ver
therearound and the bolt 84 being slidably passed through
the bore 83 and threaded into the nut 82 so that the
thrust bearing 85 will bear against the pair of upwardly
directed ear like elements 76 so that a wrench (indicated
tically positioned wall 54 that is rigidly attached (welded) 75 by the dotted lines 86) may be placed on the bolt head 84a
8,028,769
5
6
and the bolt 84 turned to separate or draw the roll 73 and
74 together with any desired pressure.
The rockable roll carriage C is provided with a vertical
the position 32a, the plate 28 and the structure thereon is
moved forward and one of the discs D of the plow will
enter between the rolls 73 and 74 to the point where the
rocking adjustment which comprises a strip of material
rolls 73 and 74 engage each other, whereupon the edge
87 that is set edge ways and vertically on the wall 55 5 of the disc D is rolled and pinched to a sharp edge.
and projects outwardly therefrom and is provided with a
After the entire circumference of the disc has passed be
pair of threaded nuts 88 and 88a that are positioned in
tween the rolls and have been sharpened, the lever 32 may
alignment with each other and are positioned one at the up
be raised, whereupon the rolled device is removed from
per and one at the lower edge of the support element 87.
the discs D and by lifting on the handles 38 the machine
A threaded adjustment shaft 89 is threaded through the 10 may be lifted and moved sideways on the rollers 26, 26a,
nuts 88 and 88a and projects downwardly to the channel
26b and 260 to the next disc where the process may be
plate 28 where it loosely passes through a hole 98 in
repeated and so on until all of the discs of the plow have
the plate 28 and on the upper end of the shaft 89 is rigid
been sharpened, at which time the machine may be moved
ly ?xed a transversely positioned handle element 89a by
away from the plow on its supporting wheels 33 and 34 .
15 and rolled onto a suitable truck or conveyance where
Beneath the plate 28 and positioned around the lower
the machine may be put in use again as above described.
end of the threaded shaft 89 is positioned a helical com
‘While the machine as shown and described is probably '
which the shaft 89 may be turned.
pression spring 91 that is held under compression between
the preferred form of the machine, it is to be understood
the plate 28 and a washer and nut 92 that is threaded on
that such modi?cations of the machine may be employed
the lower end of the shaft 89, there being a cotter pin 89 20 as lie Within the scope of the appended claim without
passing through the shaft 89 to prevent the nut 92 from
departing from the spirit and intention of the invention.
backing off the shaft 89.
'
Now having fully shown and described my invention,
The device is provided with a gauge for engaging the
distance the disc may enter between the rolls. This de
what I claim is:
A disc sharpening machine of the kind described; said
vice consists of a gauge roller 93 that is revolvably car 25 machine having an intermediate platform and a base
ried on an axle element 94, the ends of which are
platform, said intermediate platform having wheels carried
mounted in the free ends of the legs of a U-shaped ele
ment 95.
The rounded or closed end of the U-shaped element has
thereby for the support thereof and a roll machine car~
rying platform, said roll carrying machine platform being
vertically, rockably mounted on the intermediate plat
a pair of spaced and rearwardly extending support legs 30 form and means connected between the intermediate plat
96 and 97 that are rigidly attached thereto. The rear
form and the roll machine carrying platform for adjust
end of the legs 96 and 97 have holes therein that are in
registry with each other and a tongue element 98 is ?tted
therebetween and has a hole therethrough, all three of the
holes being in registry with each other and having a bolt 35
platform; a roll machine and a power unit for driving the
machine; said roll machine having a pair of engageable
and disengageable rolls thereon and speed reduction driv
99 slidably passed therethrough and being held in place
ing means carried by the roll machine carrying platform
by a nut 100 to form a pivotal mounting whereby the
gauge roller 93 and the U-shaped element 95 therefore
can rock in a horizontal plate. In the mid-portion of
the tongue element 98 is a horizontally disposed hole 101 40
and connecting between the power unit and the roll ma
chine for the driving of the rolls of the roll machine; a
ably rocking and stationing the roll machine carrying
base supporting platform; said base supporting platform
and the intermediate platform being linked together by
therethrough and ?ts between the legs 50a and 50b and
a pin 102 is slidably passed through the legs 50a and 50b
pairs of parallel, rockable leg elements and means for
rocking said leg elements to bring the lower base element
in the hole 106 whereby the roller gauge 93 can be rocked
into engagement with the ground and subsequently lift
up and down in a vertical plane. On the plate 54 is a for
the intermediate platform and its supporting wheels from
wardly extending arm 10s that extends over the rear 45 engagement with the ground; said pairs of parallel legs
end of the tongue element 98 and has a screw 104 threaded
being tiltably positioned so that the positioning of the
therethrough to engage the rear end of the tongue ele
base and intermediate plates as aforestated will carry the
ment 98 as a means of rocking the support members for '
intermediate platform and roll machine carried thereby
the roller gauge element 93 up and down for adjustment
forwardly to enter a stationary disc between the rolls of
purposes.
the roll machine, said means for adjustably rocking the
roll machine plate being a threaded shaft; said shaft hav
ing means thereon for. turning the shaft; said threaded
'
The operation of the device is as follows: The tubular
pipe element 27 is laid on the ground in parallelism with
the center longitudinal axis of the gang of discs on the
shaft threadedly engaging parts on the roll machine car
plow, whereupon the machine may be handled by tipping
rying platform and extending downwardly through an
the machine to be supported on the two supporting wheels 55 opening in the intermediate platform and spring means
33 and 34 and then rolled to position where the V-shaped
around the lower end portion of the threaded shaft; said
guide element 25 will be positioned over the tubular pipe
spring means being under compression between the under
element 27 and then rocked forwardly until the rollers 26,
side of the said intermediate platform and a stop element
26a, 26b and 26c engage the tubular pipe element 27 in
on the lower end of the threaded shaft to position a yield
position to partially carry the load of the machine, where 60 able adjustment of the rockable roll machine carrying
platform.
upon the lever 32 may be pulled rearwardly to the posi
tion of the dotted lines 32a in FIG. 9 whereupon the
References Cited in the ?le of this patent
lower support plate 15 has engaged the ground and the
upper support plate has raised and lifted the wheels 33
UNITED STATES PATENTS
and 34 off the ground and the V-shaped rib element 16 has 65
seated its self on or in the ground to stabilize the posi
tion of the machine. At this point the engine 40 may be
started and the rolls 73 and 74 are now revolving in
working position. Now by continuing the movement to
70
2,487,709
2,729,121
2,770,986
2,847,803
2,888,844
Hodges _____________ __ Nov. 8,
Robinson ____________ __ Ian. 3,
Bass ________________ __ Nov. 20,
Nuttman ____________ __ Aug. 19,
Bradstreet ___________ .... June 2,
1949
1956
1956
1958
1959
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