U.S. patent number 3,682,364 [Application Number 05/091,667] was granted by the patent office on 1972-08-08 for cartridge explosion operated bolt setting gun for fastening iron chill plates.
This patent grant is currently assigned to Hilti Aktiengesellschaft Schaan. Invention is credited to Elmar Maier.
United States Patent |
3,682,364 |
Maier |
August 8, 1972 |
CARTRIDGE EXPLOSION OPERATED BOLT SETTING GUN FOR FASTENING IRON
CHILL PLATES
Abstract
An explosive cartridge driven setting gun is carried at the
lower end of a pivotal lever member and it includes a supporting or
bearing arm which is adapted to extend over the top of a wall to
which a plate is to be affixed to provide a pivoting support for
the arm. The arm carries a frame assembly at its lower end with
extensible supporting arms for supporting a plate to be positioned
on a side of the wall particularly a chill plate for a mold wall.
The supporting arms are biased in an outward or extensible position
at which they support the plate directly in front of the setting
gun. An angle lever carried at the upper end of the frame is biased
downwardly to engage the top of the plate and hold it on the
supporting arms. When the plate is to be set on the side of the
mold, the handle is pivoted outwardly to cause the lower frame
assembly to move inwardly with the plate and to cause the angle
lever and the supporting frame members to move inwardly out of
complete engagement with the plate. At this time, the setting gun
is actuated and an anchoring bolt is driven through the plate to
hold it to the mold side wall.
Inventors: |
Maier; Elmar (Feldkirch-Tisis,
OE) |
Assignee: |
Hilti Aktiengesellschaft Schaan
(Furstentum, FL)
|
Family
ID: |
5753912 |
Appl.
No.: |
05/091,667 |
Filed: |
November 23, 1970 |
Foreign Application Priority Data
|
|
|
|
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Dec 15, 1969 [DT] |
|
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P 19 62 801.4 |
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Current U.S.
Class: |
227/9 |
Current CPC
Class: |
B22D
7/108 (20130101); B25C 1/18 (20130101); B25H
1/0057 (20130101) |
Current International
Class: |
B25H
1/00 (20060101); B22D 7/10 (20060101); B22D
7/00 (20060101); B25C 1/18 (20060101); B25C
1/00 (20060101); B27f 007/02 () |
Field of
Search: |
;227/8,9,10,11 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Custer, Jr.; Granville Y.
Claims
What is claimed is:
1. An explosive force driven device for setting plates to a wall,
for example, to a wall of a mold structure, comprising a handle
member, means for pivotally supporting the handle member on the
wall, a frame carried on said handle member including at least one
support arm for supporting the plate to be set, and a setting gun
carried on said frame in a position at which it is aligned with the
plate on the support arm for discharging a setting element into the
plate for anchoring the plate into the wall.
2. An explosive force driven device, according to claim 1, wherein
said frame inclues at least one first support arm structure adapted
to be arranged below the plate and to receive the plate thereon and
at least one second support arm structure carried on said handle
and being engageable with the top of said plate.
3. An explosive force driven device, according to claim 2, wherein
said first support arm structure comprises an extensible arm on
each side of said frame, and means mounting said support arm on
said frame for extensible and retractable movement.
4. An explosive force driven device, according to claim 2, wherein
said at least one first support arm structure comprises two bottom
support arms, means mounting said bottom support arms on said frame
for extensible and retractable movement in directions toward and
away from said setting gun, and said second support arm structure
comprising a top support arm pivotally carried on said frame and
being engageable with the top of the plate to be set.
5. An explosive force driven device, according to claim 4,
including means urging said bottom support arms at the bottom of
said plate into an extended position and second spring means urging
said top support arm in a direction toward said plate.
6. An explosive force driven device, according to claim 4, wherein
said bottom support arms include two extensible arm portions at the
bottom of said plate and said top support arm comprises a single
arm engageable with the top of said plate forming a three point
support for said plate.
7. An explosive force driven device for setting plates to a wall,
for example, of a mold structure, comprising an elongated handle, a
support member connected to said handle and adapted to be engaged
over a support structure such as the top of the wall, bracket means
on said support member for pivotally supporting said handle from
said member, a setting gun carried adjacent the lower end of said
handle, first and second lateral bottom support arms mounted below
said setting gun and carried by said handle, said first and second
support arms including respective first and second extensible
portions, said setting gun having a discharge for an anchoring
element on one side thereof, a third supporting arm carried on said
handle and positioned above said setting gun in a position above
said setting gun in a position to contact the top of a plate to be
set to the wall, said handle being pivotal on said first support
member to move the setting gun discharge in a direction toward the
plate and the wall.
8. An explosive force driven device, according to claim 7,
including trigger means carried by said handle for operating said
setting gun to discharge the anchoring device through the
plate.
9. An explosive force driven device, according to claim 7,
including first spring means associated with said first and second
support arms for biasing said arms to an extended position, second
spring means connected to said top support arm for pivoting said
top support arm in a direction toward engagement with the top of
said plate, said top support arm and said first and second support
arms being moveable against the associated first and second spring
means upwardly over the edge of the plate during the movement of
said handle to force said plate against a receiving wall.
10. An explosive force driven device, according to claim 9, wherein
said first and second support arms include receiving recesses on
the tops thereof for receiving the plates, said arms being
deflectable by engagement with a wall structure to move the plate
out of the recesses beyond the end of the support arms.
11. An explosive force driven device, according to claim 9, wherein
said pivotal support arm includes an outer surface shaped to be
deflected by engagement with a wall surface upwardly beyond the top
of the plate to permit disengagement of the plate, said setting gun
being movable by pivoting of said handle to engage the anchoring
element therein with the plate to hold the plate during
disengagement of said support arms from said plate.
Description
SUMMARY OF THE INVENTION
This invention relates in general to the construction of devices
for fastening heavy plates to inaccessible side walls and, in
particular, to the construction of a cartridge driven bolt setting
gun which is mounted on a pivotal support lever which may be
suspended over a wall structure and which carries means for
supporting a plate member to be secured to a side wall by the
operation of the gun carried on the frame member.
Iron chill plates are employed, for example, in mold constructions
and they serve to retain heat in the upper part of such molds.
There are two types of chill plates, those which supply heat by
their own combustion and those which prevent a too rapid
elimination of heat by an insulating effect. Heretofore, the iron
chill plates were introduced into the mold with a special linkage
for alignment on the mold wall before the fastening operation to
secure the plate to the mold wall. The special linkage which was
provided for aligning the plate with the mold wall had the form of
a wide outwardly extending two-tine fork device whose ends were
bent off by about 90.degree.. The plate is placed on the tines at
the bent off ends and introduces into the mold. This method and
device has the disadvantage that the linkage and the fastening
device interfere with each other during handling and the plates can
easily drop. In addition, two men are required to position the
plate with such a method.
In accordance with the present invention, there is provided a
device which provides an easy means for positioning and anchoring a
plate to an inaccessible side wall of a wall structure, such as a
mold. The invention includes a support frame which is carried on a
pivotal lever which may be pivoted on a supporting arm which is
adapted to be slung over the top of the mold wall structure. The
arm carries at its lower end, a frame structure for supporting the
plate to be positioned on the wall and also for supporting a
setting gun in a position to fire an anchoring device through the
plate to secure it to the wall structure. By mounting the setting
gun directly on the supporting frame for the plate, it is possible
for the complete operation to be carried out by a single man
rapidly and exactly. The frame holder advantageously includes two
or more oppositely arranged stirrups for supporting members which
are adjustable in length so that they may be adapted to different
plate sizes and also be adapted to hold the plate at a position in
which it is directly in front of the setting gun. The plate is
supported at the U-shaped receiving recesses at the outer ends of
the supporting arms and the arms are spring loaded so that they
project outwardly and hold the plate at a spaced location from the
end of the setting gun. When the device is positioned on the wall,
the lever supporting the frame is pivoted to cause the plate with
the supporting arms to move inwardly and be pressed against the gun
which then fires after the arms have moved to a position at which
they do not interfere with the tight holding of the plate against
the wall structure. The plate is supported by arms in the frame
which form a three point support. A central top supporting point is
formed by a pivotal bearing arm which is urged in a direction to
engage downwardly over the top of the plate. The other two bearing
points engage the plate from below and provide a support for the
plate during the setting operation.
Accordingly, it is an object of the invention to provide a device
for positioning plates on inaccessible side walls which includes a
pivotal lever member which is adapted to be supported on the wall
structure and which carries at its lower end a frame for supporting
a plate to be set together with a setting gun which is positioned
to drive an anchoring device through the plate and into the wall
structure.
A further object of the invention is to provide a setting device
which includes simple means for positioning a plate by a single
operator and for operating a setting device to secure the plate in
position.
A further object of the invention is to provide a device for
setting plates which is simple in design, rugged in construction,
and economical to manufacture.
The various features of novelty which characterize the invention
are pointed out with particularity in the claims annexed to and
forming a part of this disclosure. For a better understanding of
the invention, its operating advantages and specific objects
attained by its uses, reference should be had to the accompanying
drawings and descriptive matter in which there is illustrated a
preferred embodiment of the invention.
BRIEF DESCRIPTION OF THE DRAWING
In the Drawing:
FIG. 1 is a side elevational view of a plate setting device
constructed in accordance with the invention;
FIG. 2 is a bottom plane view of the device indicated in Fig. 1;
and
FIG. 3 is a view similar to Fig. 1, showing the device in an
operative position.
GENERAL DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the drawings in particular, the invention embodied
therein, comprises a device for setting plates, for example, for
arranging chill plates in respect to a mold which includes a handle
lever or support member 11 which is adapted to be pivotally
supported on a bearing arm 16 which is positioned to be arranged
over the wall structure on which the plate is to be set. The handle
or support member 11 includes a frame generally designated 50 at
its lower end for holding and positioning a plate such as a chill
plate 21 in a position in association with a wall to which it is to
be fastened and aligned with a setting gun generally designated 1
which is also carried on the frame. The handle support 11 includes
a shank portion 10 which is carried in a clamp plate or bracket 15
which is pivoted at 25 to the supporting arm 16. The clamp 15 is
secured by means of a screw 13 which is tightened by a handle
14.
In accordance with a feature of the invention, the frame 50
includes a U-shaped stirrup, generally designated 3, having side
legs 3a and 3b which extend outwardly substantially normal to a
support or bracket 2 which is carried at the lower end of the
setting gun 1. The leg portions 3a and 3b each carries an
extensible supporting flap for bearing plates 7 and 8, each of
which includes a rivet 5 and 6, respectively, which is confined in
a groove at 3c and 3d , respectively, for in and out movement with
respect to the associated legs 3a and 3b . The extensible supports
7 and 8 each include inturned end portions 7a and 8a ,
respectively, which are urged by a leaf spring 9 to an outer or
extended position.
In the extended position, the support arms 7 and 8 receive and
support a chill plate 21, which is adapted to be affixed to a mold
4, as shown in Fig. 3. The plate rests at its lower end on the
supports arms 7 and 8 and its upper end is engaged by an angle
lever, or holding member 20, which is pivoted on a clamp member 19
carried at the lower end of the shank portion immediately above the
setting gun 1. The clamp 19 may be secured in a desired position
along the shank portion 10 by means of a screw clamp member 18. The
angle lever 20 includes an outer end portion 20c having a
downwardly extending portion 20b which engages behind the plate 21.
The arm is urged into an engagement position by a torsion spring 22
which engages around a fulcrum pin 23 carried on the bracket
19.
The frame is adapted to hold the plate 21 in a position in which
the plate is held at a spaced location from a tip 24 of an
anchoring element which is adapted to be fired by the setting gun 1
through the plate and into a receiving wall. The gun 1 is loaded
preferably before the plate is in position and it may be fired by
actuating a trigger mechanism or pushbutton 12 carried at the upper
end of the handle 11. The bearing arm 16 includes an adjustably
positioned member 52 which has a depending stirrup or engagement
arm 17 which is adapted to engage against the inside surface of a
wall 4, as shown in Fig. 3, when the device is to be operated.
The method of operation of the device is as follows:
When a plate such as a plate 21 is to be positioned on the wall
structure 4 shown in Fig. 3, the arm 16 is positioned over the top
of the wall so as to engage the top wall 4a and the limit arm 17
engages behind the wall. The plate 21 is already positioned in the
frame 50 and the angle lever 20 is urged by the spring 22 in a
downward direction to cause the end portion 20b to engage behind
the inside top corner of the plate 21. The downward rotational
movement of the arm 20 about fulcrum pin 21 is limited by a stop
20a which contacts the shank portion 10. The bottom end of the
plate 21 rests in depressions 7a and 8a of the respective
extensible arm portions 7 and 8 and these depressions prevent the
plate from sliding off.
The handle 11 is moved in a direction of the arrow f , as shown in
FIG. 1, to cause the plate 21 to be pressed against the wall
surface 4b and to subsequently cause the frame 50 to move further
to advance the setting gun 1 toward the plate 21. After the plate
21 contacts the wall surface 4b , the arms 7 and 8 and the lever
arm 20 are moved backwardly against the force of their associated
spring so that the plate clears the recesses 7a and 8a and also the
end 20b of the arm 20, and the point 24 of the anchoring device is
pressed against the outer surface of the plate. In this position,
the setting gun 1 of the setting device is ready to be fired.
During the inward movement of the frame 50, the angle lever 20 is
moved in a direction of the arrow g, as indicated in FIG. 3, which
causes it to ride up to the edge of the plate 21. In the course of
the pressing movement of the handle 11 in the direction of the
arrow f, the projecting nail point 24 penetrates into the plate and
provides an additional means for holding the plate 21 against
sliding as the plate becomes released by the arms 7 and 8 and by
the arm 20. The arms 7 and 8 move in a direction of the arrow h by
the amount by which the arms 7 and 8 project from the plate 21 plus
the pressing path of the setting gun 1 which is necessary for
safety reasons. The chill plate 21 thus bears flat against the mold
wall 4b , as shown in Fig. 3, and the firing of the cartridge can
be effected by pressing the pushbutton 12.
While a specific embodiment of the invention has been shown and
described in detail to illustrate the application of the principles
of the invention, it will be understood that the invention may be
embodied otherwise without departing from such principles.
* * * * *