US3249279A - Bolt and charge operated tool for driving in a bolt - Google Patents

Bolt and charge operated tool for driving in a bolt Download PDF

Info

Publication number
US3249279A
US3249279A US331347A US33134763A US3249279A US 3249279 A US3249279 A US 3249279A US 331347 A US331347 A US 331347A US 33134763 A US33134763 A US 33134763A US 3249279 A US3249279 A US 3249279A
Authority
US
United States
Prior art keywords
bolt
piston
barrel
head
driving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US331347A
Inventor
Behrend Herbert
Behrend Horst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3249279A publication Critical patent/US3249279A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/18—Details and accessories, e.g. splinter guards, spall minimisers
    • B25C1/188—Arrangements at the forward end of the barrel, e.g. splinter guards, spall minimisers, safety arrangements, silencers, bolt retainers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/14—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/14—Bolts or the like for shooting into concrete constructions, metal walls or the like by means of detonation-operated nailing tools

Definitions

  • This invention relates to bolts for bolt driving or ramming tools having a barrel-type housing containing a pisvton having a rod or ram portion and actuated by a charge, such as an explosive charge.
  • the piston or ram drives the bolt from the barrel of the tool into an opposed or counter surface, such as a panel or wall.
  • This invention relates also to a tool for driving in such bolts.
  • the tools of this type which have a bolt driving piston member have the advantage in comparison with similar tools which project the bolt from the barrel that the handling of these piston operated tools is less dangerous and that they may be applied more suitably for driving bolts or nails into a surface or a material which is less resistant. They may be adjusted to operate through a limited stroke length or striking distance of the piston whereby the ramming depth for the bolt is also limited or adjusted.
  • Various modifications of the head portion of the associated bolt are disclosed herein.
  • the bolt may be driven into a panel or wall or the like although neither the bolt nor the tool has a special arrangement or elements for guiding the bolt while it is driven out of the barrel into the opposed surface. It is therefore also a feature of the invention to provide a bolt driving tool of the type described above which is especially suited for working with a bolt according to the invention.
  • the retaining element permits a clamping or wedging insertion into a front end recess of the piston. After being 'thus secured to the piston the bolt extends freely along the axis of the barrel and requires no special guiding means inside the barrel.
  • the bolt is easy to manufacture and the bolt driving tool may also be produced easily and inexpensively because it no longer requires a barrel containing means for guiding the bolt.
  • the clamping element or retaining body of the bolt may have a number of different forms.
  • the outer end of the piston is merely provided with a V recess or -opening for receiving a retaining element.
  • a loading rod for introducing and lodging the bolt with its retaining member in the front recess or opening of the piston and consists of a guide tube or loading tube having a bore for receiving the bolt shaft with a front portion or projection adapted to bear against the end of the bolt which carries the retaining member or against the retaining member itself, the diameter of this projection being smaller than the diameter or opening of the recess in the piston which receives the head end of the bolt.
  • the piston is divided into a piston sleeve which receives the adjacent end or the head end of the bolt, 8.
  • ram or piston rod por- "ice tion projecting forwardly of the piston head and adapted to enter the piston sleeve bore, a part which lies rearwardly of the piston head on the side adjacent the drive chamber, and an elastic buffer member arranged between the piston sleeve and the piston head and surrounding the piston rod-portion.
  • the elastic bulfer reduces the impact or shock of the piston during the injection of the bolt thus causing less damage to work materials such as strips and boards which are to be connected to a wall by means of thebolts.
  • the piston rod pushes the bolt head from the opening in the piston sleeve.
  • a tensioning member which bears resiliently against the piston sleeve or piston head and disposed axially of the barrel in the manner of a tensioning rail or plate.
  • Such a tensioning member allows an adjustment of the impact force or stroke of the piston as this member, which bears radially against the piston sleeve or the piston head, makes it possible to set the piston at different intervals or distances from the driving chamber.
  • FIGURE 1 shows a longitudinal section through the front portion of a charge operated tool according to the invention with a bolt set into the piston sleeve.
  • FIGURE 2 is a longitudinal section through the tool according to FIGURE 1 after discharge of the tool and insertion of the bolt.
  • FIGURE 3 shows a longitudinal section of the loading tube for setting the bolt in the barrel.
  • FIGURE 4 shows a bolt with an enlarged threade head.
  • FIGURE 5 shows a part of the threaded bolt head of FIGURE 4 in an enlarged view.
  • FIGURE 6 shows a bolt with a threaded head whose diameter is smaller than the diameter of the piston rod.
  • FIGURE 7 is a side view, partly in longitudinal section, of the end of the piston rod with an inserted bolt of modified form.
  • FIGURE 8 is a section similar to FIGURE 7 showing a bolt with a rivet type head.
  • FIGURE 9 shows a section similar to FIGURE 8 with a bolt having a conical retaining ring around the bolt shaft.
  • FIGURE 10 shows a section similar to FIGURE 7 in which the bolt head has a conical retaining member axially at the outer end.
  • FIGURE 11 shows a partial section similar to FIG ER? 10 in which the bolt has a retaining flange below the FIGURE 12 is a partial section similar to FIGURE ll with a retaining member in the form of a wire ring surrounding the bolt shaft.
  • the bolt driving tool of the invention illustrated generally in FIGURES l and 2 comprises a housing 1 in the form of a barrel in which a piston 2 is received for reciprocation and adapted to be driven forward in the barrel by igniting a charge indicated by numeral 17 placed in a firing chamber at the rear end of the barrel in order to drive the bolt 3 into a wall or the like.
  • a piston sleeve 4 is provided in the front end of the barrel to receive the bolt head.
  • the piston 2 has a ram portion 5 which is received centrally in-the opening or bore of the piston sleeve.
  • a buffer member 6 is arranged, which is made of an elastic material as shown in the embodiment illustrated in the drawing.
  • the buffer has such a form, preferably including an intermediate diametrically reduced portion, that it may be compressed axially between the piston 2 and piston sleeve 4.
  • a 'tensioning member 7 inserted into the side of the barrel bears against the piston sleeve 4 due to a spring 8 which presses it inwardly.
  • the tensioning member 7 provides that the piston 2 may be inserted to a greater or smaller degree into the driving chamber 18 without sliding out of the barrel. Rearwardly of the piston head is the driving portion of the piston which is received in the driving chamber.
  • the shaft of the bolt is provided at the end below the head 9 with a retaining or clamping element 10 of elastic material by means of which the bolt is'set into the bore of the piston sleeve so that the bolt extends freely axially of the barrel away from the piston sleeve.
  • the bolt shown in FIGURE 4 has a threaded head 11.
  • a wire spiral 12 is placed and extends with its outer diameter slightly beyond the outer diameter of the threads as shown in FIGURE 5. Before inserting the bolt head into the piston sleeve the wire spiral is preferably not in contact with the sides of the threads.
  • FIGURE 6 shows a bolt which has a smaller shaft diameter than the bore of the sleeve or of the piston rod and no head.
  • the end of the bolt adjacent the sleeve has a threaded portion.
  • an elastic retaining of clamping member 13 is placed before setting it into the sl e n n
  • the .bolt is set directly into the forward end of the piston rod whose end facing the bolt has a recess 19 for this purpose.
  • the bolt is provided with a threaded head 11 while in the examples of FIGURES 8 and 9 it has a cylindrical nailtype head 11.
  • a metal clamping .ring 20 is disposed on the bolt shaft in the vicinity of the bolt head, this ring being made for example of brass.
  • the bolt may be furnished with the clamping ring but it is possible that the clamping ring be furnished separately so that it has to be placed on the bolt shaft before using the bolt.
  • the clamping ring may also be in the form of a split ring.
  • the opening of the bore which receives the bolt head may be of a conical form diverging inwardly toward the axis and the conical surface is in dicated by numeral 21.
  • the outer circumference of the clamping ring is conical.
  • the conical outer circumference is indicated by numeral 21. It should be understood that the opening of the bore receiving the bolt head and the clamping ring may be formed conically so as to complement each. other.
  • FIGURE 10 shows a bolt whose head 11 has a conical axial extension 22 and the bottom of the recess 19 in the end of'the piston rod is provided with a corresponding conical recess 23.
  • the bolt shown in FIGURE. 11 is provided with an annular clampingflange 20.
  • the receiving opening in the front part19' is formed conically.
  • the .peripheral surface of the flange and the receiving opening of the piston may be conical.
  • the peripheral surface of the flange alone may be conical.
  • a clamping ring 20" of wire may be arranged on the bolt shaft, by means of which the bolt is clamped securely in the recess 19 which has a part a plastic material.
  • the clamping ring or wire ring 20" may be of any suitable material, such as copper, brass, iron or the like. It is also possible to make the wire ring or the annular retaining member of The end of the wire which forms the ring or annular retaining member need not be connected, and may have a desired cross-section such as round, oval, rectangular, square or the like.
  • the size of the angle of the conical surface is so chosen that it provides an automatic clamping action.
  • a guiding or loading tube as illustrated in FIGURE 3 may also be employed for inserting the bolt of FIG- URES 7-ll into the piston.
  • a charge operated bolt' driving tool comprising in combination a barrel having a bore at one end for receiving and.
  • a composite piston member received for reciprocation in said barrel and including (a) a piston head having a diameter slightly less than the inner diameter of said bore,
  • a charge operated bolt driving tool comprising in combination a barrel having a bore at one end for receiving and ejecting a headed bolt, a firing chamber at the other end of said barrel for receiving a firing charge, a driving chamber between said bore and said firing chamber and communicating therewith, and a composite piston member received for reciprocation in said barrel and including (a) a piston head having a diameter slightly less than the inner diameter of said bore,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Clamps And Clips (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

y 966 H. BEHREND ETAL 3,249,279
BOLT AND CHARGE OPERATED TOOL FOR DRIVING IN A BOLT Filed Dec. 16, 1963 United States Patent.
4 Claims. (Cl. 227-) This invention relates to bolts for bolt driving or ramming tools having a barrel-type housing containing a pisvton having a rod or ram portion and actuated by a charge, such as an explosive charge. The piston or ram drives the bolt from the barrel of the tool into an opposed or counter surface, such as a panel or wall. This invention relates also to a tool for driving in such bolts.
The tools of this type which have a bolt driving piston member have the advantage in comparison with similar tools which project the bolt from the barrel that the handling of these piston operated tools is less dangerous and that they may be applied more suitably for driving bolts or nails into a surface or a material which is less resistant. They may be adjusted to operate through a limited stroke length or striking distance of the piston whereby the ramming depth for the bolt is also limited or adjusted.
It is a feature of the invention to provide a bolt which is particularly adapted for this type. of bolt driving tools, especially for use with the piston operated tool disclosed herein. Various modifications of the head portion of the associated bolt are disclosed herein. The bolt may be driven into a panel or wall or the like although neither the bolt nor the tool has a special arrangement or elements for guiding the bolt while it is driven out of the barrel into the opposed surface. It is therefore also a feature of the invention to provide a bolt driving tool of the type described above which is especially suited for working with a bolt according to the invention.
It is a further feature of the invention to provide a device by means of which the bolt may be easily inserted and lodged in the tool barrel in engagement with the piston.
It is another feature of the invention to provide a retaining element which is applied to the end of the bolt facing the piston or the head end of the bolt. The retaining element permits a clamping or wedging insertion into a front end recess of the piston. After being 'thus secured to the piston the bolt extends freely along the axis of the barrel and requires no special guiding means inside the barrel. The bolt is easy to manufacture and the bolt driving tool may also be produced easily and inexpensively because it no longer requires a barrel containing means for guiding the bolt.
The clamping element or retaining body of the bolt may have a number of different forms. For this purpose the outer end of the piston is merely provided with a V recess or -opening for receiving a retaining element.
Another'feature of the invention is the provision of a loading rod for introducing and lodging the bolt with its retaining member in the front recess or opening of the piston and consists of a guide tube or loading tube having a bore for receiving the bolt shaft with a front portion or projection adapted to bear against the end of the bolt which carries the retaining member or against the retaining member itself, the diameter of this projection being smaller than the diameter or opening of the recess in the piston which receives the head end of the bolt.
In the tool disclosed herein, which is particularly designed to drive in the bolts of this invention, the piston is divided into a piston sleeve which receives the adjacent end or the head end of the bolt, 8. ram or piston rod por- "ice tion projecting forwardly of the piston head and adapted to enter the piston sleeve bore, a part which lies rearwardly of the piston head on the side adjacent the drive chamber, and an elastic buffer member arranged between the piston sleeve and the piston head and surrounding the piston rod-portion. The elastic bulfer reduces the impact or shock of the piston during the injection of the bolt thus causing less damage to work materials such as strips and boards which are to be connected to a wall by means of thebolts. While driving in the bolt, the piston rod pushes the bolt head from the opening in the piston sleeve.
It may be desirable to provide in the barrel containing the piston a tensioning member which bears resiliently against the piston sleeve or piston head and disposed axially of the barrel in the manner of a tensioning rail or plate. Such a tensioning member allows an adjustment of the impact force or stroke of the piston as this member, which bears radially against the piston sleeve or the piston head, makes it possible to set the piston at different intervals or distances from the driving chamber.
Additional features and advantages of the invention will appear from the following description in combination with the accompanying drawings which illustrate for the purpose of examples various embodiments including the elements which are necessary to a full understanding of the invention.
FIGURE 1 shows a longitudinal section through the front portion of a charge operated tool according to the invention with a bolt set into the piston sleeve.
FIGURE 2 is a longitudinal section through the tool according to FIGURE 1 after discharge of the tool and insertion of the bolt.
FIGURE 3 shows a longitudinal section of the loading tube for setting the bolt in the barrel.
FIGURE 4 shows a bolt with an enlarged threade head.
FIGURE 5 shows a part of the threaded bolt head of FIGURE 4 in an enlarged view.
FIGURE 6 shows a bolt with a threaded head whose diameter is smaller than the diameter of the piston rod.
FIGURE 7 is a side view, partly in longitudinal section, of the end of the piston rod with an inserted bolt of modified form.
FIGURE 8 is a section similar to FIGURE 7 showing a bolt with a rivet type head.
FIGURE 9 shows a section similar to FIGURE 8 with a bolt having a conical retaining ring around the bolt shaft.
FIGURE 10 shows a section similar to FIGURE 7 in which the bolt head has a conical retaining member axially at the outer end.
FIGURE 11 shows a partial section similar to FIG ER? 10 in which the bolt has a retaining flange below the FIGURE 12 is a partial section similar to FIGURE ll with a retaining member in the form of a wire ring surrounding the bolt shaft.
The bolt driving tool of the invention illustrated generally in FIGURES l and 2 comprises a housing 1 in the form of a barrel in which a piston 2 is received for reciprocation and adapted to be driven forward in the barrel by igniting a charge indicated by numeral 17 placed in a firing chamber at the rear end of the barrel in order to drive the bolt 3 into a wall or the like. A piston sleeve 4 is provided in the front end of the barrel to receive the bolt head. The piston 2 has a ram portion 5 which is received centrally in-the opening or bore of the piston sleeve. Between this sleeve 4 and the piston 2 a buffer member 6 is arranged, which is made of an elastic material as shown in the embodiment illustrated in the drawing. The buffer has such a form, preferably including an intermediate diametrically reduced portion, that it may be compressed axially between the piston 2 and piston sleeve 4.
A 'tensioning member 7 inserted into the side of the barrel bears against the piston sleeve 4 due to a spring 8 which presses it inwardly. The tensioning member 7 provides that the piston 2 may be inserted to a greater or smaller degree into the driving chamber 18 without sliding out of the barrel. Rearwardly of the piston head is the driving portion of the piston which is received in the driving chamber.
In the embodiment of FIGURE 1 the shaft of the bolt is provided at the end below the head 9 with a retaining or clamping element 10 of elastic material by means of which the bolt is'set into the bore of the piston sleeve so that the bolt extends freely axially of the barrel away from the piston sleeve. 7
The bolt shown in FIGURE 4 has a threaded head 11.
Into the threads of this threaded head portion a wire spiral 12 is placed and extends with its outer diameter slightly beyond the outer diameter of the threads as shown in FIGURE 5. Before inserting the bolt head into the piston sleeve the wire spiral is preferably not in contact with the sides of the threads.
FIGURE 6 shows a bolt which has a smaller shaft diameter than the bore of the sleeve or of the piston rod and no head. The end of the bolt adjacent the sleeve has a threaded portion. On this end an elastic retaining of clamping member 13 is placed before setting it into the sl e n n For the purpose of setting the bolt into the piston sleeve- In the embodiments of FIGURES 7-12 the .bolt is set directly into the forward end of the piston rod whose end facing the bolt has a recess 19 for this purpose.
In the embodiments of FIGURES 7, 10, 11 and. 12 the bolt is provided with a threaded head 11 while in the examples of FIGURES 8 and 9 it has a cylindrical nailtype head 11.
According to FIGURES 7-9 a metal clamping .ring 20 is disposed on the bolt shaft in the vicinity of the bolt head, this ring being made for example of brass. The bolt may be furnished with the clamping ring but it is possible that the clamping ring be furnished separately so that it has to be placed on the bolt shaft before using the bolt. The clamping ring may also be in the form of a split ring.
InFIGURES 7 and 8 the opening of the bore which receives the bolt head may be of a conical form diverging inwardly toward the axis and the conical surface is in dicated by numeral 21.
In the embodiment of FIGURE 9 the outer circumference of the clamping ring is conical. The conical outer circumference is indicated by numeral 21. It should be understood that the opening of the bore receiving the bolt head and the clamping ring may be formed conically so as to complement each. other.
FIGURE 10 shows a bolt whose head 11 has a conical axial extension 22 and the bottom of the recess 19 in the end of'the piston rod is provided with a corresponding conical recess 23.
The bolt shown in FIGURE. 11 is provided with an annular clampingflange 20. The receiving opening in the front part19' is formed conically. In this embodiment the .peripheral surface of the flange and the receiving opening of the piston may be conical. Similarly the peripheral surface of the flange alone may be conical.
According to FIGURE 12 a clamping ring 20" of wire may be arranged on the bolt shaft, by means of which the bolt is clamped securely in the recess 19 which has a part a plastic material.
21 which diverges conically outwardly. The clamping ring or wire ring 20" may be of any suitable material, such as copper, brass, iron or the like. It is also possible to make the wire ring or the annular retaining member of The end of the wire which forms the ring or annular retaining member need not be connected, and may have a desired cross-section such as round, oval, rectangular, square or the like.
In each of the embodiments the size of the angle of the conical surface is so chosen that it provides an automatic clamping action.
A guiding or loading tube as illustrated in FIGURE 3 may also be employed for inserting the bolt of FIG- URES 7-ll into the piston.
What is claimed is:
1. A charge operated bolt' driving tool comprising in combination a barrel having a bore at one end for receiving and.
ejecting a headed bolt having a frictionally engaged retaining means associated therewith,
a firing chamber at the other end of said barrel for receiving a firing charge, I
a driving chamber between said bore and said firing chamber and communicating therewith, and
a composite piston member received for reciprocation in said barrel and including (a) a piston head having a diameter slightly less than the inner diameter of said bore,
(b) a ram portion extending from said piston toward said one end of said barrel centrally of said bore, i
(c) a driving portion extending centrally from said piston head toward said other end of said barrel and received for reciprocation in said driving chamber,
(d) a substantially smooth walled axial recess in the end of said ram portion for receiving the head of said bolt and said retaining means.
2. The bolt driving tool according to claim 1 wherein said recess has an outwardly diverging frusto-conical wall whose base diameter is less than the diameter of said retaining means.
3. A charge operated bolt driving tool comprising in combination a barrel having a bore at one end for receiving and ejecting a headed bolt, a firing chamber at the other end of said barrel for receiving a firing charge, a driving chamber between said bore and said firing chamber and communicating therewith, and a composite piston member received for reciprocation in said barrel and including (a) a piston head having a diameter slightly less than the inner diameter of said bore,
(b) a ram portion extending from said piston toward said one end of said barrel centrally of said bore and having a relatively small diameter leaving an annular space between itself and the inner surface of said bore,
(c) an axial recess in the end of said ram portion for receiving the head of said bolt,
(d) retaining means associated with said bolt head for engaging the walls of said-recess to-fix said bolt on said ram portion coaxially therewith,
(e) a driving portion extending centrally from said piston head toward said other end of said barrel and received for reciprocation in said driving chamber,
(f) a piston sleeve slideably received on said ram portion at its outer end and reciprocating therewith, p
(g) a buffer means of resilient material disposed between said piston head and said piston sleeve and filling substantially said annular space hetween said ram portion and the inner surface of said bore, and (h) a circumferentially reduced intermediate portion on said buffer means allowing a limited axial compression of the resilient material of said bulfer means under the bolt driving impact, said resilient material moving said piston head inwardly sufiiciently to separate said ram portion from the bolt head upon returning into its normal distended position. 4. The bolt driving tool according to claim 3 wherein said buffer means engages the outer surface of said ra/rn portion'at its inner periphery and engages at its outer periphery the inner surface of said bore at least at the ends.
References Cited by the Examiner UNITED STATES PATENTS 2,665,421 1/1954 Temple 227-10 3,023,414 3/1962 Sinex 22710 3,050,732 8/1962 Termet 22710 FOREIGN PATENTS 518,452 3/1953 Belgium.
GRANVILLE Y-. CUSTER, 111., Primary Examiner.

Claims (1)

1. A CHARGE OPERATED BOLT DRIVING TOOL COMPRISING IN COMBINATION A BARREL HAVING A BORE AT ONE END FOR RECEIVING AND EJECTING A HEAD BOLT HAVING A FRICTIONALLY ENGAGED RETAINING MEANS ASSOCIATED THEREWITH, A FIRING CHAMBER AT THE OTHER END OF SAID BARREL FOR RECEIVING A FIRING CHARGE, A DRIVING CHAMBER BETWEEN SAID BORE AND SAID FIRING CHAMBER AND COMMUNICATING THEREWITH, AND A COMPOSITE PISTON MEMBER RECEIVED FOR RECIPROCATION IN SAID BARREL AND INCLUDING (A) A PISTON HEAD HAVING A DIAMETER SLIGHTLY LESS THAN THE INNER DIAMETER OF SAID BORE, (B) A RAM PORTION EXTENDING FROM SAID PISTON TOWARD SAID ONE END OF SAID BARREL CENTRALLY OF SAID BORE, (C) A DRIVING PORTION EXTENDING CENTRALLY FROM SAID PISTON HEAD TOWARD SAID OTHER END OF SAID BARREL AND RECEIVED FOR RECIPROCATION IN SAID DRIVING CHAMBER, (D) A SUBSTANTIALLY SMOOTH WALLED AXIAL RECESS IN THE END OF SAID RAM PORTION FOR RECEIVING THE HEAD OF SAID BOLT AND SAID RETAINING MEANS.
US331347A 1963-09-04 1963-12-16 Bolt and charge operated tool for driving in a bolt Expired - Lifetime US3249279A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0073370 1963-09-04

Publications (1)

Publication Number Publication Date
US3249279A true US3249279A (en) 1966-05-03

Family

ID=6977829

Family Applications (1)

Application Number Title Priority Date Filing Date
US331347A Expired - Lifetime US3249279A (en) 1963-09-04 1963-12-16 Bolt and charge operated tool for driving in a bolt

Country Status (2)

Country Link
US (1) US3249279A (en)
DE (1) DE1478819A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690536A (en) * 1970-12-07 1972-09-12 Olin Corp Powder-actuated tool
US4832265A (en) * 1985-11-19 1989-05-23 Societe Nationale Des Poudres Et Explosifs Perforator-injector with an internal percussion mass
EP0732178A1 (en) * 1995-03-17 1996-09-18 Adolf Würth GmbH & Co. KG Bolt driving tool
EP0826464A1 (en) * 1996-09-02 1998-03-04 HILTI Aktiengesellschaft Powder driven fastener tool with piston returning means
US6123243A (en) * 1997-12-15 2000-09-26 Hilti Aktiengesellschaft Cartridge setting tool
US6889884B2 (en) * 2001-01-30 2005-05-10 Hilti Aktiengesellschaft Setting tool
US10888985B2 (en) * 2017-02-22 2021-01-12 Illinois Tool Works Inc. Fastener pusher with an improved workpiece-contact element

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE518452A (en) * 1952-03-14
US2665421A (en) * 1950-02-11 1954-01-12 Stanley A Temple Projectile launching device
US3023414A (en) * 1958-02-26 1962-03-06 Remington Arms Co Inc Captive piston stud driver
US3050732A (en) * 1957-11-29 1962-08-28 Termet Pierre Fastener driving interlocking pistol or tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2665421A (en) * 1950-02-11 1954-01-12 Stanley A Temple Projectile launching device
BE518452A (en) * 1952-03-14
US3050732A (en) * 1957-11-29 1962-08-28 Termet Pierre Fastener driving interlocking pistol or tool
US3023414A (en) * 1958-02-26 1962-03-06 Remington Arms Co Inc Captive piston stud driver

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690536A (en) * 1970-12-07 1972-09-12 Olin Corp Powder-actuated tool
US4832265A (en) * 1985-11-19 1989-05-23 Societe Nationale Des Poudres Et Explosifs Perforator-injector with an internal percussion mass
EP0732178A1 (en) * 1995-03-17 1996-09-18 Adolf Würth GmbH & Co. KG Bolt driving tool
EP0826464A1 (en) * 1996-09-02 1998-03-04 HILTI Aktiengesellschaft Powder driven fastener tool with piston returning means
US5901894A (en) * 1996-09-02 1999-05-11 Hilti Aktiengesellschaft High pressure gas operated setting tool
US6123243A (en) * 1997-12-15 2000-09-26 Hilti Aktiengesellschaft Cartridge setting tool
US6889884B2 (en) * 2001-01-30 2005-05-10 Hilti Aktiengesellschaft Setting tool
US10888985B2 (en) * 2017-02-22 2021-01-12 Illinois Tool Works Inc. Fastener pusher with an improved workpiece-contact element

Also Published As

Publication number Publication date
DE1478819A1 (en) 1969-07-17

Similar Documents

Publication Publication Date Title
US4025029A (en) Hammer-activated powder-actuated fastening tool
US5860580A (en) Piston retention device for combustion-powered tools
US5996708A (en) Percussion tool
US4519536A (en) Apparatus for driving nails using an impact hammer
KR0140043B1 (en) Hammer blow gunpowder nailing tool
US2594901A (en) Axial impact type tang break-off tool
US3249279A (en) Bolt and charge operated tool for driving in a bolt
US4134527A (en) Powder charge operated apparatus
US3690536A (en) Powder-actuated tool
US3490329A (en) Bolt for explosive actuated bolt setter
US3465942A (en) Fastener driving tool
US2590585A (en) Explosively actuated bonding tool
US3297224A (en) Power actuated tool
US5394702A (en) Explosive powder charge operated setting tool
US5119554A (en) Pintail ejector assembly for fastener installation tooling
US4960235A (en) Nail set device
US2893279A (en) Cartridge-powered impact tool
US3219248A (en) Attachment device for impact tools and the like
US6032847A (en) Setting tool
US4201325A (en) Fastening element setting device
US6318239B1 (en) Nailer and bumper provided therein for braking impact piston
US4830252A (en) Hammer-activated, powder-actuated drive tool
US3115637A (en) Explosive actuated fastener driving tools
US3623432A (en) Hollow charge projectiles
US3104396A (en) Explosively actuated fastener driving tool