| |
| United States Patent
|
6,517,164 |
| White |
February 11, 2003 |
Hammer-ripper excavating system
Abstract
A hammer-ripper system for use with the mounting on the boom arm,
of an excavator/backhoe, of a conventional hydraulically-operated
hammer fitted with a "shortened" chisel. A "ripping-type" device
like a chisel tooth mounts to a lever with its pivot point attached
to the side of the hammer. One end of the lever extends to be
impacted by under the shortened chisel, while the other end extends
inward. Thus, the tooth end can be placed under embedded boulders
and used to hammer (using the transmitted reciprocating action of
the hydraulic hammer), and pry or break up the boulders from
underneath with the combined hammering and ripping action.
| Inventors: |
White; Richard E. (Camp
Verde, AZ) |
| Appl. No.:
|
09/633,380 |
| Filed: |
August 7, 2000 |
| Current U.S.
Class: |
299/37.5 ;
172/62; 173/93; 299/36.1; 299/69; 37/447 |
| Current
International Class: |
E02F
3/04 (20060101); E02F 5/00 (20060101); E02F 5/32 (20060101);
E02F 3/96 (20060101); E21C 025/02 () |
| Field of
Search: |
299/37.1,37.2,38.1,37.3,37.4,37.5,36.1,65,69,71
172/62,710,93,498,705,664 173/93,130,211,132,118
37/408,409,447,457,458,904,380,466,303 414/723,724,726 |
References Cited
[Referenced By]
U.S. Patent
Documents
Primary Examiner: Bagnell; David
Assistant Examiner: Stephenson; Daniel P
Attorney, Agent or Firm:
Stoneman; Martin L.
Claims
What is claimed is:
1. An excavator tool system for use with an excavator boom arm
comprising at least two articulated segments, for providing
combination impact and other forces during excavation of material,
comprising, in combination: a) a transmitting means for transmitting
reciprocating impact forces in a first direction; b) a
direction-changing means, removably attached to said transmitting
means, for receiving said reciprocating impact forces from said
transmitting means and for changing said first direction of said
reciprocating impact forces at least about 90 degrees to a second
direction; and c) an impact means, connected with said
direction-changing means, for providing combination impact, in said
second direction, and other forces to the material; d) wherein said
transmitting means is adapted for attachment to the excavator boom
arm.
2. The system according to claim 1 wherein said other forces
comprise ripping forces.
3. The system according to claim 1 wherein said transmitting means
comprises a hydraulically actuated impact hammer.
4. The system according to claim 1 wherein said direction changing
means comprises a lever.
5. The system according to claim 1 wherein said impact means
comprises a ripper tooth.
6. An excavator tool system for use with an excavator boom arm
comprising at least two articulated segments, for providing
combination impact and other forces during excavation of material,
comprising, in combination: a) an impact-force transmitter
structured and arranged to transmit reciprocating impact forces in a
first direction; b) a force redirector, removably attached to said
impact-force transmitter, structured and arranged to receive said
reciprocating impact forces from said impact-force transmitter and
to change said first direction of said reciprocating impact forces
at least about 90 degrees to a second direction; c) a
force-transmitting tool, connected with said force redirector,
structured and arranged to provide combination impact, in said
second direction, and other forces to the material; and d) wherein
said impact-force transmitter is structured and arranged to be
attached to the excavator boom arm.
7. The system according to claim 6 further comprising an excavator
apparatus including a boom arm connected to said impact-force
transmitter.
8. The system according to claim 6 further comprising a connector
between said impact-force transmitter and said force redirector
structured and arranged to provide connection both in an operating
position and a stowed position.
9. The system according to claim 8 wherein said impact-force
transmitter comprises a hydraulically actuated impact hammer.
10. The system according to claim 9 wherein said connector is
structured and arranged to permit normal operation of said
hydraulically actuated impact hammer with said force redirector
connected in a said stowed position.
11. The system according to claim 6 wherein said force-transmitting
tool comprises a ripper element.
12. The system according to claim 11 wherein said ripper element
comprises a tooth.
13. The system according to claim 6 wherein said force redirector
comprises a lever having a pivot pin, a first lever side, and a
second lever side.
14. The system according to claim 13 wherein said first lever side
comprises a strike plate structured and arranged to receive said
reciprocating impact forces from said impact-force transmitter.
15. The system according to claim 14 wherein said second lever side
comprises a tool connector structured and arranged to permit a
removable connection to said force-transmitting tool.
16. The system according to claim 15 wherein said pivot pin is
mounted on said impact-force transmitter and said force redirector
is rotatably mounted on said pivot pin.
17. The system according to claim 16 further comprising a connector
between said impact-force transmitter and said force redirector
structured and arranged to provide connection both in an operating
position and a stowed position, wherein: a) said impact-force
transmitter comprises a hydraulically actuated impact hammer; b)
said connector is structured and arranged to permit normal operation
of said hydraulically actuated impact hammer with said force
redirector connected in a said stowed position; c) said
force-transmitting tool comprises a ripper element; d) said ripper
element comprises a tooth; and e) when in said stowed position, said
second lever side of said force redirector is attachable with
hydraulically actuated impact hammer.
18. The system according to claim 17 further comprising an excavator
apparatus including a boom arm connected to said impact-force
transmitter.
19. The system according to claim 15 wherein said tool connector
comprises a return spring for said lever.
20. An excavator tool system for use with an excavator boom arm
comprising at least two articulated segments, for providing
combination impact and other action for assisting in displacing
material, comprising, in combination: a) an impactor tool structured
and arranged to provide a rapid series of power-driven impacts in a
first direction; b) said impactor tool structured and arranged to be
attached to the excavator boom arm; and c) a second tool, removably
attached to said impactor tool, structured and arranged i) to
provide an other action than impacting, and ii) to be impacted upon
by said impactor tool and to transmit the power-driven impacts in a
second direction at least about 90 degrees to the first direction,
and iii) to combine impact action with said other action to act upon
the material.
Description
BACKGROUND
Typically, in the construction industry, various types of
hydraulically-operated equipment are used to excavate both natural
and man-made materials. For instance, hydraulic shovels (also called
excavation buckets), often mounted on backhoes, are often used to
remove typical soils. However, hydraulic shovels are not adequate
for harder materials such as solid rock or large boulders.
Hydraulically-operated hammers (also called impact tools or
breakers) mounted on a backhoe/excavator are used to break up rock
or concrete. Hydraulically-operated hammers pound in a downward
direction only, which is useful to break boulders. However,
hydraulically-operated hammers typically cannot be used to pry up
boulders or to get under boulders and pound them upward to loosen
them from surrounding material. Other devices such as excavator
buckets and rippers can be used to pry up buried boulders, but are
not able to hammer. Thus, there is needed a more efficient system
for such excavating work.
OBJECTS OF THE INVENTION
A primary object and feature of the present invention is to fulfill
the above-mentioned needs by the provision of a device that would
attach to an excavating machine, mounted with a
hydraulically-operated hammer, that is constructed to be used to pry
up or break-up buried boulders from underneath. A further primary
object of the present invention is to provide such a device or
system which is efficient, inexpensive, and handy. Other objects of
this invention will become apparent with reference to the following
descriptions.
SUMMARY OF THE INVENTION
According to a preferred embodiment of the present invention, this
invention provides a system for providing combination impact and
other forces during excavation of material, comprising, in
combination: a transmitting means for transmitting reciprocating
impact forces in a first direction; a direction-changing means,
removably attached to such transmitting means, for receiving such
reciprocating impact forces from such transmitting means and for
changing such first direction of such reciprocating impact forces to
a second direction; and an impact means, connected with such
direction-changing means, for providing combination impact, in such
second direction, and other forces to the material. It also provides
such system wherein such other forces comprise ripping forces. And
it provides such system wherein such transmitting means comprises a
hydraulically actuated impact hammer; and, further, wherein such
direction changing means comprises a lever; and, further, wherein
such impact means comprises a ripper tooth.
In addition, the present invention provides, in accordance with a
preferred embodiment thereof, a system for providing combination
impact and other forces during excavation of material, comprising,
in combination: an impact-force transmitter structured and arranged
to transmit reciprocating impact forces in a first direction; a
force redirector, removably attached to such impact-force
transmitter, structured and arranged to receive such reciprocating
impact forces from such impact-force transmitter and to change such
first direction of such reciprocating impact forces to a second
direction; and a force-transmitting tool, connected with such force
redirector, structured and arranged to provide combination impact,
in such second direction, and other forces to the material. It also
provides such system further comprising an excavator apparatus
including a boom arm connected to such impact-force transmitter. In
addition, it provides such a system further comprising a connector
between such impact-force transmitter and such force redirector
structured and arranged to provide connection both in an operating
position and a stowed position. It also provides such a system
wherein such impact-force transmitter comprises a hydraulically
actuated impact hammer.
Still further, it provides such a system wherein such connector is
structured and arranged to permit normal operation of such
hydraulically actuated impact hammer with such force redirector
connected in a such stowed position. It also provides such a system
wherein such force-transmitting tool comprises a ripper element.
Moreover, the present invention provides such a system wherein such
ripper element comprises a tooth. And it provides such a system
wherein such force redirector comprises a lever having a pivot pin,
a first lever side, and a second lever side. It also provides such a
system wherein such first lever side comprises a strike plate
structured and arranged to receive such reciprocating impact forces
from such impact-force transmitter. Further, it provides such a
system wherein such second lever side comprises a tool connector
structured and arranged to permit a removable connection to such
force-transmitting tool; and, further, wherein such tool connector
comprises a return spring for such lever. And it provides such a
system wherein such pivot pin is mounted on such impact-force
transmitter and such force redirector is rotatably mounted on such
pivot pin.
In addition, the present invention provides such a system further
comprising a connector between such impact-force transmitter and
such force redirector structured and arranged to provide connection
both in an operating position and a stowed position, wherein: such
impact-force transmitter comprises a hydraulically actuated impact
hammer; such connector is structured and arranged to permit normal
operation of such hydraulically actuated impact hammer with such
force redirector connected in a such stowed position; such
force-transmitting tool comprises a ripper element; such ripper
element comprises a tooth; and when in such stowed position, such
second lever side of such force redirector is attachable with
hydraulically actuated impact hammer. And it provides such system
further comprising an excavator apparatus including a boom arm
connected to such impact-force transmitter.
Moreover, the present invention provides, in accordance with a
preferred embodiment thereof such system for providing combination
impact and other action for assisting in displacing material,
comprising, in combination: an impactor tool structured and arranged
to provide a rapid series of power-driven impacts in a first
direction; and a second tool, removably attached to such impactor
tool, structured and arranged to provide an other action than
impacting, and to be impacted upon by such impactor tool, and to
combine impact action with such other action to act upon the
material.
Further, the present invention provides, in accordance with a
preferred embodiment thereof, a system for providing combination
hammering and ripping forces during excavation of material,
comprising, in combination: a hydraulic hammer tool structured and
arranged to produce a reciprocating action in a first direction; and
a ripping tool, removably attached to such hydraulic hammer tool,
structured and arranged to provide a ripping action, and to be moved
by such reciprocating action, and to combine forces from such
reciprocating action with such ripping action to act upon the
material.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an excavating apparatus with a
hydraulically actuated impact hammer and incorporating a preferred
embodiment of the hammer-ripper system of the present invention.
FIG. 2 is a partial elevation view of the embodiment of FIG. 1.
FIG. 3 is a partial cross-sectional view, through the section 3--3
of FIG. 2.
FIG. 4 is a perspective exploded view of the bottom end of the
embodiment of FIG. 1.
FIG. 5 is a partial side elevation view of the preferred embodiment
of FIG. 1, illustrating the hammer-ripper in a stowed position.
FIG. 6 is a partial side elevation view of another preferred
embodiment of the hammer-ripper system of the present invention,
shown in an operating position.
FIG. 7 is a partial side elevation view yet another preferred
embodiment of the hammer-ripper system of the present invention,
shown in an operating position.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT AND THE BEST MODE OF
PRACTICE
Illustrated in FIG. 1 is a perspective view illustrating a preferred
embodiment of an excavating hammer-ripper system 20 of the present
invention, and further illustrating a hammer-ripper attachment 29
shown in its preferred combination with a hydraulically-actuated
impact hammer 25 connected to a typical hydraulic excavating
apparatus 30 (commonly referred to as a tractor backhoe). It is well
known by those skilled in the art, with respect to hydraulic
excavating apparatus 30 or similar equipment, that the excavator
boom arm 36 is manufactured so as to allow for a variety of
extensions or other devices to be attached to the excavator boom arm
36 for the purposes of excavation or any other of a variety of
purposes for which the hydraulic excavating apparatus 30 is well
suited. The hydraulically-actuated impact hammer 25 (embodying
herein a transmitting means for transmitting reciprocating impact
forces in a first direction and also embodying an impact-force
transmitter structured and arranged to transmit reciprocating impact
forces in a first direction) is typical with respect to attachment
means for hydraulic excavating apparatus 30 and is typically
actuated by pressurized oil flow. It should be noted that the
preferred hydraulic excavating apparatus 30 may, for suitable
applications, be replaced by other suitable excavating apparatus
provided with a corresponding, arbitrarily positioned,
preferably-hydraulically-operated hammer.
FIG. 1 illustrates a preferred use of the present invention, i.e.,
removal and/or break-up of large rock 21 or other similar hard
material while excavating. The operator of hydraulic excavating
apparatus 30 positions the excavator boom arm 36 such that the tip
23 of the chisel tooth attachment 27 of the excavating hammer-ripper
attachment 29 is located beneath the material to be removed (here
illustrated as rock 21). The hydraulically-actuated impact hammer 25
is activated in a normal manner as force is applied against the tip
23 of the chisel tooth attachment 27 and a corresponding force is
thereby transferred by the lever arm sub-assembly 26 to the
shortened chisel 33 of the hydraulically-actuated impact hammer 25.
The hydraulically-actuated impact hammer 25 is activated and a
hammering force is then transferred by the lever arm sub-assembly 26
to the tip 23 of the chisel tooth attachment 27 (embodying herein an
impact means, connected with such direction-changing means, for
providing combination impact, in such second direction, and other
forces to the material and also embodying a force-transmitting tool,
connected with such force redirector, structured and arranged to
provide combination impact, in such second direction, and other
forces to the material). The hammer action combined with the
ripping/prying action as the excavator boom arm 36 pulls on the tip
23 of the chisel tooth attachment 27 (thereby applying a ripping
force) loosens the rock and will usually facilitate removal of the
rock and/or resulting pieces. This arrangement embodies herein a
system for providing combination hammering and ripping forces during
excavation of material, comprising, in combination: a hydraulic
hammer tool structured and arranged to produce a reciprocating
action in a first direction; and a ripping tool, removably attached
to such hydraulic hammer tool, structured and arranged to provide a
ripping action, and to be moved by such reciprocating action, and to
combine forces from such reciprocating action with such ripping
action to act upon the material. The present invention may be best
used where traditional overhead means to break up rock are not
efficient and the preferred method is to get under the rock or
hardened material and pry it up, loosen it for removal, or break it
apart for removal.
FIG. 2 is a partial side elevation of the embodiment of FIG. 1,
illustrating an excavating hammer-ripper attachment 29 (embodying
herein a direction-changing means, removably attached to such
transmitting means, for receiving such reciprocating impact forces
from such transmitting means and for changing such first direction
of such reciprocating impact forces to a second direction and also
embodying a force redirector, removably attached to such
impact-force transmitter, structured and arranged to receive such
reciprocating impact forces from such impact-force transmitter and
to change such first direction of such reciprocating impact forces
to a second direction) attached to a hydraulically actuated impact
hammer 25. Hydraulically actuated impact hammer 25 is of the type
frequently used for breaking up rock, concrete or other hardened
materials. Hydraulically actuated impact hammer 25 is typically
mounted to a backhoe or other excavating apparatus 30 which
positions and pushes hammer 25 against rock to be broken up.
Hydraulic fluid pressure is supplied to a valve in a well-known
manner, which causes a piston within the impact hammer 25 to cycle
and correspondingly deliver impacting blows to an end device such as
a hardened chisel 49 (see FIG. 5). In the preferred embodiment as
shown in FIGS. 1-2, the present invention is shown in an operating
mode. The lever arm sub-assembly 26 is shown transferring the impact
energy from the hydraulically actuated impact hammer 25 to the
chisel tooth attachment 27 of the present invention and against a
rock 21. The transference of force/energy from the hydraulically
actuated impact hammer 25 to the chisel tooth attachment 27 occurs
as the impact hammer shortened chisel attachment 33 impacts the
strike plate 35, a part of hammer-ripper attachment 29, as shown.
This force/energy is then transferred through the lever arm
sub-assembly 26 to the chisel tooth attachment 27.
As shown in FIG. 2, a spring 32 is attached at one end of the lever
arm sub-assembly 26 by a lever arm spring receiving bracket 48
having a lever arm spring receiving aperture 63. The other end of
the spring 32 is attached to the hydraulically actuated impact
hammer 25 by means of a spring receiving bracket 47 having a spring
receiving aperture 62. The return spring 32 assists continual
forcing of strike plate 35 toward the shortened chisel attachment 33
of the hydraulically actuated impact hammer 25 sufficient to allow
the lever arm sub-assembly 26 to be returned in position after each
impact of shortened chisel attachment 33 of the hydraulically
actuated impact hammer 25 against the strike plate 35, thus
facilitating the impact of the chisel tooth attachment 27 against
the rock 21 or similar material to be removed.
This transference of the force/energy from the hydraulically
actuated impact hammer 25 to the chisel tooth attachment 27 combined
with the ripping action of the excavating apparatus 30 as it pulls
or pushes the excavating boom arm 36, transfers additional force
upon the chisel tooth attachment 27 (this arrangement embodying
herein an excavator apparatus including a boom arm connected to such
impact-force transmitter. Preferably, the combined action of the
hydraulically actuated impact hammer 25 and the ripping action of
the excavating boom arm 36 results in the break-up, prying up, or
loosening and finally, removal, of the item to be excavated.
Further, it is noted that the preferred chisel tooth attachment 27
can, for suitable purposes, be replaced by every suitable types of
detachable tooths used for such excavating purposes.
FIG. 3 is a cross section through section 3--3 of FIG. 2, especially
illustrating a preferred connecting method for the preferred
embodiment of the excavating hammer-ripper attachment 29 to the
impact hammer 25. This Figure is further described with reference to
discussion of FIG. 4. FIG. 4 further illustrates this connection in
an exploded perspective view showing the basic components of the
excavating hammer-ripper attachment 29. The preferred basic
construction consists of a central lever arm sub-assembly 26 with an
attached rear lower flange 48 at one end. An attached upper flange
55 is mounted to the top of the lever arm sub-assembly 26 in such
position to make connection to the connector subassembly 72 of the
impact hammer 25. The front portion of the lever arm sub-assembly 26
consists of a ripper-type tooth body 86 which has removable,
partially-hollow chisel tooth attachment 27 fitting over and secured
to the ripper-type tooth body 86 by securing bolt 34 and nut 45. As
mentioned, rear lower flange 48 has a spring receiving aperture 63;
and upper flange 55 has a sleeve receiving aperture 59. Connecting
pin sleeve 41 preferably pressure fits into sleeve receiving
aperture 59. Both upper flange 55 and connecting pin sleeve 41 are
preferably further attached to each other by sleeve set screw 46
inserted through a pre-drilled aperture 67 in upper flange 55 and a
threaded aperture 66 in connecting pin sleeve 41. The above
arrangement embodies herein a system wherein such force redirector
comprises a lever having a pivot pin, a first lever side, and a
second lever side.
At the upper portion of lever arm sub-assembly 26, posterior of the
upper flange 55 on the upper lever arm surface 58 of the lever arm
sub-assembly 26 is a strike plate 35. Strike plate 35 is preferably
welded to the upper lever arm surface 58 and is tit positioned such
that the shortened chisel 33 of a hydraulically actuated impact
hammer 25 impacts the strike plate 35 (embodying herein that such
first lever side comprises a strike plate structured and arranged to
receive such reciprocating impact forces from such impact-force
transmitter) when the hydraulically-operated hammer 25 is
operational and hammer-ripper attachment 29 is in place for
operation. The strike plate 35 is preferably made of hardened steel.
The hydraulically actuated impact hammer 25 has an attaching bracket
sub-assembly 72 preferably consisting of pair of spaced, parallel,
apertured attaching plates shown as attaching plate 28 and attaching
plate 40. Attaching plate 28 and attaching plate 40 are parallel to
each other as well as in a plane perpendicular to the front casing
face 80 (the face generally facing the excavator/backhoe 30) of the
hydraulically actuated impact hammer 25. Attaching bracket
sub-assembly 72 is preferably welded to the hydraulically-operated
hammer face 80. As shown, attaching plates 28 and 40 include
respective pivot-pin receiving apertures 60 and 61 and respective
set-screw receiving apertures 68 and 69. When attaching plates 28
and 40 are mounted as shown, pivot-pin receiving apertures 60 and 61
are aligned for purposes of receiving a pivot-pin 31. Pivot-pin 31
includes screw-receiving apertures 70 and 71. Pivot-pin 31 is
secured in its operative position by respective set screws 42 and 43
as shown. Preferably a strengthening bracket 19 is weldably attached
along the bottom of the lever arm sub-assembly 26, as shown. The
strengthening bracket 19 extends across the pivot angle 18 along the
center vertical plane of the lever arm sub-assembly 26.
The connection of the lever arm sub-assembly 26 to the attaching
bracket sub-assembly 72 of the hydraulically actuated impact hammer
25 is preferably accomplished by the aligning of the respective
apertures 60, 61, and 59 of each respective welded attachment
bracket 28, 40 and 55 and by utilizing a pivot-pin 31 slidably
inserted into the aligned apertures (such connection embodying
herein a tool connector structured and arranged to permit a
removable connection to such force-transmitting tool). With
reference again to FIG. 3 (a cross-section through this attached
connection), it is seen that, preferably, as illustrated, pin sleeve
41 is situated within sleeve receiving aperture 59. And pivot pin 31
is placed within the aligned apertures 60 and 61 and aligned sleeve
aperture 83. This arrangement is suitable to permit swiveling of
hammer-ripper attachment 29 about pivot pin 31 so that it may swivel
with respect to impact hammer 25.
As best shown in FIG. 4, a rear, upper, apertured spring attaching
plate 47 is centered and mounted on the opposite side (facing
generally away from excavator/backhoe 30) of the attaching plates 28
and 40 in a position to be directly above spring attaching plate 48
as well as in a plane parallel to those of attaching plates 28 and
40. Rear upper spring attaching plate 47 includes a spring-receiving
aperture 62. Inserted into spring receiving aperture 62 is one end
of return spring 32. The other end of spring 32 is inserted into
spring receiving aperture 63 of plate 48, as shown. When the
hydraulically actuated impact hammer 25 is fitted with the shortened
chisel 33, and when the excavating hammer-ripper attachment 29 is
operational, the shortened chisel 33 hits and moves the strike plate
35 generally downward, causing the lever arm spring receiving
bracket 48 to stretch the return spring 32 by moving downwardly with
respect to impact hammer 25. The return spring 32 exerts upward
force on and suitably acts to pull the lever arm spring receiving
bracket 48 back into its former position. Each such strike causes
hammer-ripper attachment 29 to pivot about the pivot-pin 31.
When it is operated as herein set out, the excavating hammer-ripper
attachment 29 can be used to impact or dig or chip materials such as
large rock. When the hydraulically actuated impact hammer 25 is not
operational, the hydraulic excavating apparatus 30 can continue to
utilize the excavating hammer-ripper system 29 with normal movements
to dig, chip, or impact materials with the ripper-type tooth body 86
and attached, removable chisel tooth attachment 27. This arrangement
embodies herein a system for providing combination impact and other
action for assisting in displacing material, comprising, in
combination an impactor tool structured and arranged to provide a
rapid series of power-driven impacts in a first direction, and a
second tool, removably attached to such impactor tool, structured
and arranged to provide an other action than impacting, and to be
impacted upon by such impactor tool, and to combine impact action
with such other action to act upon the material.
FIG. 5 is a partial side elevation view of the preferred embodiment
of FIGS. 1-4 of the excavating hammer-ripper attachment 29 of the
present invention with the hammer-ripper attachment 29 shown in a
stowed preferred position and a typical lengthened chisel 49 shown
in place of the shortened chisel 33 previously shown in FIG. 4. As
illustrated in FIG. 5, the excavating hammer-ripper attachment 29 is
preferably restrained by restraining strap 50 in its stowed
position. This restraining strap 50 is preferably made of leather.
Preferably by applying appropriate constant pressure against the
lever tooth end 23 of the excavating hammer-ripper attachment 29,
the return spring 32 may be "compressed" or loosened and then
unattached from the lever arm spring receiving bracket 48, thus
allowing the excavating hammer-ripper attachment 29 to be placed in
the preferred illustrated stowed position, permitting the
hydraulically actuated impact hammer 25 to operate in its normal
mode. This arrangement embodies herein a connector between such
impact-force transmitter and such force redirector structured and
arranged to provide connection both in an operating position and a
stowed position, wherein such impact-force transmitter comprises a
hydraulically actuated impact hammer, such connector is structured
and arranged to permit normal operation of such hydraulically
actuated impact hammer with such force redirector connected in a
such stowed position, such force-transmitting tool comprises a
ripper element; such ripper element comprises a tooth, and when in
such stowed position, such second lever side of such force
redirector is attachable with hydraulically actuated impact hammer.
Further, the shortened chisel 33 adapted for this preferred
embodiment of present invention is interchangeable with a lengthened
chisel 49 as shown in FIG. 5. The lengthened chisel 49 is typically
used for normal operation of the hydraulically actuated impact
hammer 25.
Illustrated in FIG. 6 is a partial side elevation view of another
preferred embodiment of the excavating hammer-ripper attachment 29.
In this preferred embodiment, the excavating hammer-ripper
attachment 29 includes an alternate preferred lever arm 56 instead
of previously-described lever arm 26. This alternate preferred
embodiment of lever arm 56 is manufactured with about a 90-degree
bend at bend 19 as illustrated in FIG. 6, thereby lowering the
chisel tooth attachment 27 with respect to the plane of the lever
arm strike plate 35. The lowered ripper-type tooth body 86 with
attached removable chisel tooth attachment 27 (embodying herein that
such ripper element comprises a tooth) allows for another angle of
approach to the rock or other hardened material being removed.
Preferably a strengthening bracket 17 is weldably attached along the
bottom of the lever arm sub-assembly 56. The strengthening bracket
17 extends across the bend 19 along the center vertical plane of the
lever arm sub-assembly 56.
FIG. 7 is a partial side elevation view of yet another preferred
embodiment of the excavating hammer-ripper attachment 29 of the
present invention, illustrating yet another alternate preferred
embodiment of the lever arm 57. The lever arm 57 configuration is
shown in FIG. 7 coupled with the same mounting configuration as
previously discussed. Lever arm 57 is preferably, as illustrated in
FIG. 7, structured to entirely be substantially in the same plane as
that of lever arm strike plate 35. The ripper-type tooth body 86
with attached removable chisel tooth attachment 27 allows for
another angle of approach to the rock or other hardened material
being removed. In this embodiment a strengthening bracket preferably
is not used.
Although applicant has described applicant's preferred embodiments
of this invention, it will be understood that the broadest scope of
this invention includes such modifications as diverse shapes and
sizes and materials. Such scope is limited only by the below claims
as read in connection with the above specification. Further, many
other advantages of applicant's invention will be apparent to those
skilled in the art from the above descriptions and the below claims.
* * * * *
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