US3047873A - Explosively actuated driving tool - Google Patents

Explosively actuated driving tool Download PDF

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Publication number
US3047873A
US3047873A US516721A US51672155A US3047873A US 3047873 A US3047873 A US 3047873A US 516721 A US516721 A US 516721A US 51672155 A US51672155 A US 51672155A US 3047873 A US3047873 A US 3047873A
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United States
Prior art keywords
barrel
block
cartridge
casing
tool
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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
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US516721A
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English (en)
Inventor
Walter E Schulz
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Individual
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Individual
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    • 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
    • B25C1/12—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting directly on the bolt
    • B25C1/123—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting directly on the bolt trigger operated

Definitions

  • the present invention relates to explosively actuated driving tools for driving studs, nails or the like into walls, ceilings and other bodies.
  • This application is a continution-in-part application of my co-pending application Ser. 369,870, filed July 23, 1953, now abandoned.
  • a further object of the invention consists in the provision of an explosively actuated driving tool which will make it possible to vary the driving power of the tool so that while using the same type of cartridges nails, studs, or the like of different lengths and thicknesses may be driven into the respective body or into bodies of different material.
  • FIG. 1 illustrates a diagrammatic longitudinal sectional view of an embodiment of an explosively actuated driving tool in accordance with the invention with means for varying the driving power.
  • FIGS. 2 and 3 respectively illustrate two different positions of the control arrangement forming part of the tool according to FIG. 1.
  • FIG. 4 represents a cross section through FIG. 1 taken along the line IV-IV of FIG. 1.
  • FIG. 1 represents a driving tool according to the invention which makes it possible with one and the same cartridge to drive not only studs of different diameters but also studs of the same diameter at different force, i.e. into different depths.
  • the casing consists of a tubular section 161 which is fixedly connected with the handle 119 and which houses the breech block 162 as well as the release mechanism for the firing pin '165.
  • the breech block 162 is continuously urged forwardly by means of a spring 172 which rests against the top 200 of the casing 161.
  • a spring 172 which rests against the top 200 of the casing 161.
  • the ring 159 is adapted to slide backwardly against the thrust of the spring 158 which has one end in engagement with the ring 159 while its other end engages a shoulder of the breech block 162.
  • a ring 167 is arranged within the breech block 162 in such a manner that it is slidable in a direction transverse to the longitudinal direction of the tool.
  • the longitudinal bore of ring 167 is provided with a shoulder against which abuts the front surface of the collar 168 of firing pin 165, while the rear surface of said collar 168' is engaged by the front surface of the sleeve 157.
  • Sleeve 157 is slipped over the hollow stud 182 in a telescopic manner.
  • the hollow stud 182 in its turn is fixedly connected to the top 200 of the casing 161.
  • the end of the firing pin is passed through a bore in the front end of the hollow stud 182, and a nut 156 screwed on or welded to the firing pin prevents the firing pin from leaving the stud 182 and thus limits the forward movement of the firing pin which by means of the firing pin spring 166 is continuously urged forwardly.
  • the ring 167 is provided with a pin 171 arranged when releasing the shot to cooperate with a nose of the trigger 169.
  • the breech block 162 has a lateral groove 155 into which extends a roller 173 which latter is arranged to roll on an incline 174 forming the bottom of a groove 201 in a member mounted in handle 119.
  • a pin 18! mounted slidably in casing 161 continuously urged forwardly by a spring 202 is arranged to press the roller 173 forwardly which in this manner together with the groove 15S and the inclined surface 174 forms a friction locking mechanism.
  • This locking mechanism allows a rearward movement of the breech block 162 whereas it impedes the forward movement of the breech block.
  • the casing 161 of the driving tool furthermore slidably mounts a pin 179 which when breaking the front portion 175 of the casing will be pressed rearwardly due to a cam 178 on the front portion 175 of the casing so that the pin 179 will engage the roller 173 thereby releasing said friction locking mechanism.
  • the front portion 175 of the casing consists of a tube which by means of a hinge 176 is pivotally connected with the rear portion 161 of the casing to thereby allow breaking of the casing.
  • a locking mechanism 106 which when closing the casing moves into its locking position to retain the front and rear portions 175 and 161 in precisely axial alignment when the casing is closed.
  • the barrel 95 is slipped into a sleeve 101 which has its outside provided with a coarse thread 102 threadedly engaging a corresponding inner thread of a sleeve 99 slidably but non-rotatably mounted in front portion 175.
  • the rear end of sleeve 99 is screw connected to a block 98 in which the cartridge chamber 96 is provided.
  • That end of the barrel 95 which faces the block 98 is provided with steps 185, 186 which precisely fit into corresponding steps of the block 98.
  • a further ring or annular member 163 is slipped over the sleeve 101 which receives the front end of the barrel.
  • the annular member 163 is connected by means of a pin 164 to the sleeve 101 so that it cannot rotate relative thereto.
  • a spring 91 has one end thereof in engagement with the annular member 163, while its other end rests against a ring 100 connected to the casing portion 175. In this way the spring 91 continuously urges the interconnected members 163 and 101 forwardly.
  • the casing portion 175 is provided with a window 104 through which the ring or annular member 163 is visible and accessible from the outside.
  • the outer surface of said ring 163 is preferably provided with a graduation.
  • the arrangement furthermore comprises a spring 111 having one end thereof in engagement with the sleeve 99, while its other end abuts a shoulder of the sleeve 101 so that the thread 102 is held under load and any play of said thread is eliminated.
  • the operation of the driving tool shown in FIG. 1 is as follows:
  • the casing By releasing the locking device 106, the casing is opened, and both casing portions 161 and 175 are tilted relatively to each other which operation is usually called the breaking of the casing.
  • the stud to be driven is then passed from the rear through the cartridge chamber into the barrel, whereupon the cartridge is inserted into the cartridge chamber 96. Thereupon the casing is closed again until the locking device 106 becomes effective and interlocks the two casing portions 161 and 175.
  • the desired driving power Prior or after the loading of the tool, by rotation of the annular member 163 accessible and visible through the window 104, the desired driving power is set. When the annular member 163 is rotated, the sleeve 101 non-rotatably con.
  • FIG. 1 shows the position of the barrel when said spaces are completely closed, which position corresponds to the setting for maximum driving power.
  • FIG. 2 shoWs a position in which the barrel is screwed outwardly to a certain extent so that the first annular space at the step 185 is somewhat opened. This means that a portion of the powder gases can enter said last mentioned annular space whereby the driving power is somewhat reduced.
  • the surfaces perpendicularly arranged with regard to each other and pertaining to the steps prevent, however, the powder gases from entering the space 186 which space is thus still ineffective in this position of the barrel.
  • FIG. 3 shows another position according to which the barrel is still further screwed outwardly.
  • the annular spaces 185 and 186 and the space immediately therebelow are open so that the powder gases can enter these three annular spaces whereas the other annular spaces are still ineffective.
  • the height of the steps decrease from the step of the greatest diameter up to the step of the smallest diameter as shown in the drawing whereby the annular spaces will open one after another.
  • a preferred form of construction is one in which the angle between the exit direction of the powder gases through the annular channels and the direction of movement of the firing pin in the barrel is less than 90.
  • a seal 188 is provided between the space 187 and said thread.
  • the said seal consists of grooves cut into the barrel and provided with vertical flanks. Inasmuch, as mentioned above each surface perpendicular to its direction of movement offers a very high resistance to the powder gases, these grooves suflice in order to prevent the powder gases from penetrating into the space between the barrel and the sleeve.
  • the tool loaded in the above mentioned manner is locked because on one hand in the illustrated rest position, the firing pin 165 is retained in such a position by the nut 156 in which it cannot reach firing cap of the cartridge. Furthermore also the pin 171 of the release or unlocking mechanism cannot cooperate with the nose 170 of the trigger 169.
  • the muzzle of the barrel 95 is placed upon the surface into which the stud has to be driven, and the tool which is held by means of the handle 119 is pressed against said surface.
  • the barrel together with the sleeves 99 and 101 are pressed inwardly against the thrust of the spring 91.
  • the rear end of the sleeve 99 presses the block 98 toward the rear.
  • the tool housing is advanced toward the surface into which a stud is to be driven, while the barrel together with sleeves 99 and 101, breech block 162, firing pin 165 and sleeve 157 remain stationary during this time, the barrel being in abutment with said surface.
  • the firing pin spring 166 is loaded and carries trigger nose 170 into registry with pin 171.
  • the ring 167 is moved leftwardly against the thrust of spring 153, thereby releasing the firing pin. Due to the thrust of the loaded spring 166, the firing pin is pushed forwardly and hits 7 the firing cap of the cartridge so that the latter is ignited and the stud is driven into the body upon which the muzzle of the barrel was placed.
  • the recoil brings about that the cartridge is discharged rearwardly from the cartridge chamber 96, the breech block 162 being thrown backwardly against the thrust of spring 172.
  • the friction locking mechanism consisting of the roller 173, the incline 174 and the groove 155 in the breech block becomes effective and prevents the forward movement of the breech block.
  • a space remains between the block 98 and the breech block 162 in which there will be found the discharged cartridge.
  • the barrel is arranged exchangeably.
  • the block 98 may be removed by unscrewing it from sleeve 99 whereupon the barrel can be pushed backwardly and can likewise be removed. T 0 this end, it is necessary to release the device shown in FIG. 4 which prevents the barrel from axial displacement.
  • This device consists of a ring 107 which is displaceable in a direction transverse to the longitudinal axis of the barrel. The ring 107 is continuously urged rightwardly (with regard to FIG. 4) by means of a spring 108 and is arranged to engage a groove 110 in the barrel 95.
  • the ring 107 is pressed leftwardly by manually pressing the pin 109 inwardly, the inward end of the pin normally being in sliding contact with the ring 107. T he barrel can then be withdrawn from the casing and can be replaced by another barrel. In this way it is possible by means of cartridges of the same size to obtain not only different driving power depending on the material into which and the depth to which the stud is to be driven but it is also possible to drive studs of different sizes.
  • the outer surface of the breech block is provided with sealing grooves 191 which act in the same manner as the sealing grooves 188 in the barrel.
  • an explosively actuated stud driving tool having a barrel with a bore through which a stud is expelled and a cartridge chamber for an explosive cartridge at the breech end of said barrel
  • said barrel and said cartridge block together are additionally positioned in said stud driving tool for limited reciprocating axial movement with respect to said stud driving tool, said stud driving tool having a gas-tight chamber and a breech block sealingly slidable in said gas-tight chamber and axially movable with respect to said barrel and said cartridge block and normally resiliently urged by the force of resilient means into abutment with the breech end of said cartridge block, said breech block carrying a firing pin and being operable upon said limited axial movement of said barrel and said cartridge block with respect to said stud driving tool in the direction of the breech block by urging means to move said firing pin into engagement with a cartridge positioned in the cartridge chamber defined by said cartridge block to bring about firing of said cartridge, said breech block being slidably arranged to move away from said cartridge block in said gas-tight chamber in response to a predetermined pressure developed by the powder gases of said cartridge following the firing thereof suflicient to overcome the urging force of said resilient

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US516721A 1953-01-24 1955-06-20 Explosively actuated driving tool Expired - Lifetime US3047873A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEB21372A DE1008216B (de) 1953-01-24 1953-01-24 Bolzensetzgeraet
DE772352X 1953-01-24
DESCH12881A DE1011370B (de) 1953-01-24 1953-06-25 Bolzensetzgeraet

Publications (1)

Publication Number Publication Date
US3047873A true US3047873A (en) 1962-08-07

Family

ID=27207417

Family Applications (1)

Application Number Title Priority Date Filing Date
US516721A Expired - Lifetime US3047873A (en) 1953-01-24 1955-06-20 Explosively actuated driving tool

Country Status (6)

Country Link
US (1) US3047873A (sv)
BE (1) BE521711A (sv)
CH (2) CH328537A (sv)
DE (2) DE1008216B (sv)
FR (1) FR1084425A (sv)
GB (2) GB772351A (sv)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4705200A (en) * 1985-02-08 1987-11-10 Uniset Corporation Pivot-load powder actuated tool with firing chamber insert
US5114064A (en) * 1990-07-17 1992-05-19 Hilti Aktiengesellschaft Powder charge operated setting tool

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1071006B (de) * 1954-02-23 1959-12-10 Mettmann Walter Schulz (RhId.) Bolzensetzgerät
US3046557A (en) * 1954-05-17 1962-07-31 Omark Industries Inc Explosively actuated tool
NL93446C (sv) * 1955-11-22
DE1130378B (de) * 1956-08-07 1962-05-24 Dr Georg Groetsch Bolzensetzgeraet
CH355111A (fr) * 1957-11-29 1961-06-15 Termet Pierre Pistolet pour enfoncer une cheville dans un matériau
NL105404C (sv) * 1958-02-27
DE1210390B (de) * 1958-06-07 1966-02-03 Alpine Ag Maschinenfabrik Vorrichtung zum Eintreiben von Bolzen, insbesondere fuer schwere Verankerungen
GB870900A (en) * 1958-11-27 1961-06-21 John Lester Adolph An explosive power assisted, hammer driven tool
GB882796A (en) * 1959-04-13 1961-11-22 Amp Inc Improvements in tools for crimping electrical connectors to electrical conductors
DE1235229B (de) * 1959-07-29 1967-02-23 Walter Schulz Bolzensetzgeraet und Bolzen
DE1237038B (de) * 1959-12-10 1967-03-23 Alpine Ag Vorrichtung zum Brechen von Gesteinsbloecken u. dgl.
NL294624A (sv) * 1962-07-02

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US891778A (en) * 1908-04-25 1908-06-23 Ludwig Mertens Non-recoiling firearm.
US990475A (en) * 1910-06-09 1911-04-25 Alessandro Cuccurullo Automatic pistol.
US1190352A (en) * 1914-04-07 1916-07-11 John O Winks Automatic firearm.
US1864374A (en) * 1931-01-09 1932-06-21 Rheinische Metallw & Maschf Firearm
FR768859A (fr) * 1934-02-20 1934-08-14 Nouveau pistolet d'abatage avec armement, départ et éjection automatiques
US2030803A (en) * 1931-08-18 1936-02-11 Robert Temple Inc Compressing device
US2359515A (en) * 1942-04-06 1944-10-03 Martin C Mogensen Variable range projectile
US2383053A (en) * 1942-04-18 1945-08-21 Martin C Mogensen Mounting device for projectiles
US2518395A (en) * 1946-09-16 1950-08-08 Stephen M Dunn Device for inserting bolts in concrete
US2533851A (en) * 1947-07-11 1950-12-12 Portable Ind Inc Tool
US2622243A (en) * 1950-04-05 1952-12-23 Temple Velocity Equipment Inc Spring fired explosively actuated tool
US2665421A (en) * 1950-02-11 1954-01-12 Stanley A Temple Projectile launching device
US2677823A (en) * 1953-09-16 1954-05-11 Powder Power Tool Corp Means for varying the effective force on explosively actuated fasteners
US2697830A (en) * 1949-12-29 1954-12-28 Powder Power Tool Corp Means to control the effective force of the expanding gases on a fastener, in explosively actuated fastener driving implements
US2801416A (en) * 1952-08-07 1957-08-06 Remington Arms Co Inc Means for controlling the velocity of projectiles
US2849715A (en) * 1953-02-03 1958-09-02 Olin Mathieson Fastener setting tool

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE437958C (de) * 1926-11-30 Rheinische Metallw & Maschf Selbsttaetige Feuerwaffe
DE300108C (sv) * 1914-09-25
DE697547C (de) * 1935-08-14 1940-10-16 Theodor Bergmann & Co G M B H Maschinenwaffe mit beim Schuss feststehendem Ladegriff
CH200709A (de) * 1937-12-13 1938-10-31 Oerlikon Buehrle Ag Automatische Feuerwaffe.
US2504311A (en) * 1941-05-10 1950-04-18 Stephen M Dunn Apparatus for inserting bolts into concrete
US2400878A (en) * 1941-05-10 1946-05-28 Stephen M Dunn Method of inserting bolts into concrete
GB579278A (en) * 1943-04-01 1946-07-30 George William Patchett Improvements in automatic firearms
US2395354A (en) * 1943-12-24 1946-02-19 Temple Velocity Equipment Inc Driving tool
CH247470A (de) * 1945-04-12 1947-03-15 Sig Schweiz Industrieges Verschlussvorrichtung für selbsttätige Feuerwaffen.
BE484782A (sv) * 1947-09-23
US2479431A (en) * 1948-06-22 1949-08-16 Temple Velocity Equipment Inc Safety mechanism for explosively actuated tools

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US891778A (en) * 1908-04-25 1908-06-23 Ludwig Mertens Non-recoiling firearm.
US990475A (en) * 1910-06-09 1911-04-25 Alessandro Cuccurullo Automatic pistol.
US1190352A (en) * 1914-04-07 1916-07-11 John O Winks Automatic firearm.
US1864374A (en) * 1931-01-09 1932-06-21 Rheinische Metallw & Maschf Firearm
US2030803A (en) * 1931-08-18 1936-02-11 Robert Temple Inc Compressing device
FR768859A (fr) * 1934-02-20 1934-08-14 Nouveau pistolet d'abatage avec armement, départ et éjection automatiques
US2359515A (en) * 1942-04-06 1944-10-03 Martin C Mogensen Variable range projectile
US2383053A (en) * 1942-04-18 1945-08-21 Martin C Mogensen Mounting device for projectiles
US2518395A (en) * 1946-09-16 1950-08-08 Stephen M Dunn Device for inserting bolts in concrete
US2533851A (en) * 1947-07-11 1950-12-12 Portable Ind Inc Tool
US2697830A (en) * 1949-12-29 1954-12-28 Powder Power Tool Corp Means to control the effective force of the expanding gases on a fastener, in explosively actuated fastener driving implements
US2665421A (en) * 1950-02-11 1954-01-12 Stanley A Temple Projectile launching device
US2622243A (en) * 1950-04-05 1952-12-23 Temple Velocity Equipment Inc Spring fired explosively actuated tool
US2801416A (en) * 1952-08-07 1957-08-06 Remington Arms Co Inc Means for controlling the velocity of projectiles
US2849715A (en) * 1953-02-03 1958-09-02 Olin Mathieson Fastener setting tool
US2677823A (en) * 1953-09-16 1954-05-11 Powder Power Tool Corp Means for varying the effective force on explosively actuated fasteners

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4705200A (en) * 1985-02-08 1987-11-10 Uniset Corporation Pivot-load powder actuated tool with firing chamber insert
US5114064A (en) * 1990-07-17 1992-05-19 Hilti Aktiengesellschaft Powder charge operated setting tool
AU640802B2 (en) * 1990-07-17 1993-09-02 Hilti Aktiengesellschaft Powder-operated setting machine

Also Published As

Publication number Publication date
BE521711A (sv)
GB772351A (en) 1957-04-10
DE1011370B (de) 1957-06-27
FR1084425A (fr) 1955-01-19
DE1008216B (de) 1957-05-09
CH328537A (de) 1958-03-15
CH325204A (de) 1957-10-31
GB772352A (en) 1957-04-10

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