US2966683A - Driving tool - Google Patents

Driving tool Download PDF

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Publication number
US2966683A
US2966683A US489567A US48956755A US2966683A US 2966683 A US2966683 A US 2966683A US 489567 A US489567 A US 489567A US 48956755 A US48956755 A US 48956755A US 2966683 A US2966683 A US 2966683A
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US
United States
Prior art keywords
barrel
casing
spring
pin
stud
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
US489567A
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English (en)
Inventor
Walter E Schulz
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Individual
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Individual
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Filing date
Publication date
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Publication of US2966683A publication Critical patent/US2966683A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B25C1/12—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 driving tools and, more particularly, to driving tools for driving studs, nails and the like into solid bodies.
  • Driving tools serving for driving studs, nails or the like into solid bodies must in conformity with prevailing safety 'regulations be so designed that prior to the firing of the stud, a relative movement between the muzzle of the barrel land the casing will be necessary, and that only in this position, a tiring of ,the stud will be possible.
  • This regulation is intended to prevent the driving tool from being fired in the manner of a gun, Le., without the barrel muzzle being pressed against a fixed abutment. In order to assure the relative movement between the barrel and the casing to the required extent, it is necessary to provide an abutment for the barrel.
  • Slt is also an Lobject of ⁇ this invention to provide a driving tool Yof 'the type set forth in the preceding paragraphs, in which the abutment which limits the relative movement of the barrel and casing will become -inelective tively soft spring so that also with an excessive recoil no hand injuries will occur.
  • Fig. 1 is a section through a driving tool according to the invention in which the abutment for limiting the relative movement between the barrel and the shield becomes ineffective when tiring the driving tool.
  • Figs. la, 1b and lc show the driving tool according to the invention in different positions during the actuation thereof.
  • Fig. 2 illustrates a longitudinal section through a moditied driving tool according to the invention in which the relative displacement between the barrel and shield is independent of a limiting abutment limiting the relative movement between the barrel and the shield.
  • Figs. 2a and 2b show the driving tool according to Fig. 2 yin diiferent positions of operation.
  • Fig. 3 illustrates a still further modification of the invention and shows a driving tool somewhat similar to that of Fig. 2 having a guiding pipe which serves as abutment.
  • the trigger may, for instance, be so designed that the actuation of the trigger simultaneously releases the tiring pin and causes the abutment which limits said relative movement to become ineffective, for instance, by withdrawing said abutment.
  • the said abutment is made ineffective on withdrawal of the tiring pin which itself serves as abutment for the barrel or the breech block connected to the barrel.
  • the tiring pin is preferably positively vengageable with the barrel or with the breech block connected to the barrel and to the casing so that when a relative movement between the barrel and the shield is effected, simultaneously the firing pin is held stationary while the spring for the firing pin is compressed.
  • the said positive connection is eliminated, whereupon the firing pin, due tothe thrust on the firing pin, springs or jumps forwardly lwhile simultaneously the barrel is free to move toward the rear. Consequently, the barrel can now move backywardly due to the eifect of the recoil. This backward movement of the barrel may be intercepted by a spring or braking means.
  • the same effect is obtained by making the barrel axially movable independently of the abutment which limits the relative movement between the barrel and the casing.
  • the barrel which in a ⁇ manner similar to the first embodiment, is preferably xedly connected to the breech block and may, for instance, be screwed into the latter, is, therefore, allowed suflicient distance to displace itself against the thrust of a spring not only tothe extent necessary for the relative movement between the casing and the barrel prior to the ltiring of the 'tool but by an additional distance which is sufficient to intercept the recoil without shock effect upon the handle.
  • the abutment which limits the relative movement of the barrel is arranged on the casing which has vthe handle connected thereto.
  • the said abutment rests in a positive manner against the surface into which the bolt is to be driven.
  • the abutment limits the distance or stroke by which the casing prior to the ring is pressed forwardly against the surface into which the stud has to be driven.
  • An arrangement according to the present invention has the further advantage that it is of simple construction and comprises relatively few elements.
  • a further simplification of the construction of a driving tool according to the invention may be obtained by providing the breech block with a movable extension which limits the forward movement of the breed block. Furthermore, after the said extension has been pressed inwardly, the breech block, firing pin and firing pin spring, as well as the release member, which latter interlocks the breech block and firing pin in a positive manner, may be removed.
  • Such extension may, for instance, be formed by an extension or tongue of the breech block, which tongue may extend through a slot in the casing in such a manner that when the barrel is in a certain position relative to the casing, said tongue will face the nose of the trigger so that in this position only will it be possible to release the ring pin, whereas in the foremost position of the barrel relative to the casing it is possible by pressing in the same tongue to dismantle the tool.
  • the driving tool shown therein comprises a barrel 1 which is screwed into the breech block 2 by means of a thread 3.
  • the firing pin 5 is designed as a sleeve which in the interior thereof has arranged a firing pin spring 6.
  • a pin 8 inserted into the bottom of the casing 7 serves as guide for the firing pin spring.
  • a release member is movably mounted in a transverse bore 9 of the breech block 2 so as to be movable in a direction transverse to the longitudinal axis of the barrel against the thrust of a spring 11.
  • This release member is also provided with a bore extending in the direction of the longitudinal axis of the ring pin and arranged so that the firing pin can pass through said bore when the release member 10 is pressed inwardly against the thrust of the spring 111.
  • the casing 7 is provided with a slot 14 through which protrudes an extension 15 of the release member 10.
  • the said eX- tension 15 is adapted to be actuated by a trigger 16 which is tiltable about a bolt 17.
  • the extension 15 occupies the position shown in Fig. 1 in dash lines.
  • the barrel is screwed out of the breech block 2, whereupon the stud and the cartridge are introduced into the barrel from the rear. Finally the barrel is again screwed into the breech block 2.
  • the barrel is reinforced at 4, and this reinforcement is knurled.
  • Fig. 1 The device according to Fig. 1 is actuated in the following manner.
  • the sleeve 19 is manually withdrawn away from the wall while simultaneously the otherhand which holds the butt 24 presses in opposite direction as is indicated in Fig. la by the arrows 29 and 30.
  • Fig. la shows the position of the parts now occupied thereby, i.e. after withdrawal of the housing 19 and the shield 20 connected thereto in the direction of the arrow 29 and the exertion of pressure upon the butt 24 in the direction of the arrow 30.
  • the muzzle of the barrel extends beyond the front side of the protective plate 28 and can be properly observed while the tool is readied for ring.
  • Fig. lb illustrates the end position in which the driving tool is ready for firing.
  • the bottom of the housing 7 rests against the surface 31 through the intervention of the firing pin, the release member 10, the shoulders 12, 13 thereof, the breech block 2 and the barrel 1 so that the operator will feel a hard resistance when the position shown in Fig. lb has been reached.
  • the sleeve 19 will in its position of Fig. 1b not be in direct contact with the housing 7 so that a slight inclination of the driving tool will be possible.
  • the device according to the invention will make sure that the tool cannot be red when it inclined with regard to the surface 31.
  • the nose 25 presses extension 15 upwardly.
  • the shoulders 12, 13 will not be contacted any longer and the firing pin springs forward in view of the ring pin spring 6. This ignites the cartridge, and stud 35 is driven into the surface 31.
  • the barrel 1 and the breech block 2 are pressed into the housing 7 toward the left while spring 18 and spring 6 Will be compressed.
  • the thus obtained position is illustrated in Fig. lc.
  • the distance over which the barrel and the breech block move against the thrust of the two springs may be so selected that the recoil energy will be absorbed before the barrel and the breech block have reached the outermost left hand end position which is determined by the blocking of springs 18 and the length of the firing pin. This prevents a hard recoil which could harmfully affect the hand of the operator.
  • the extension or tongue 15 and the trigger 16 of the arrangement of Fig. 1 have a still further function.
  • the opening 17a. through which the bolt 17 extends through the trigger is, as shown, not a circular but an angular longitudinal passage.
  • the spring 26 has the tendency to turn the trigger not only in the direction of the arrow a, but has an additional tension which presses the trigger in the direction of the arrow b toward the left.
  • the trigger When the trigger is pulled out in the direction of the arrow c, the bolt 17 enters the second leg or section of the angular longitudinal passage, and the trigger may now be pushed inwardly so that the extension or tongue 15 during this actuation of the trigger is pressed inwardly when it is in that position inwhich the barrel occupies its foremost position. Even when the tool is loaded, no firing can take place in this position because in this position of the barrel, the firing pin cannot reach the tiring cap because it is retained bythe flange 21. However, the breech block may now be pulled outwardly toward the front.
  • the tiring pin 5 with the firing pin spring 6 and the outer firing pin .guide 22 may be removed.
  • the distance between the casing 7 and the sleeve 19 is selected so that the casing can be pressed forwardly a suicient distance only when the sleeve 19occupies its foremost position, or is at least close to said foremost position.
  • a spring ring 27 which is located in a groove of the enlarged portion of the barrel prevents the removal of the sleeve 19 which in its turn is non-detachably connected with the protective hood shield 28.
  • the barrel 1a is screwed into the breech block 2a by means of a thread 3a.
  • the barrel is screwed out of the breech block, and the stud and cartridge are introduced from the rear into the barrel, whereupon the barrel is again screwed into the breech block 2a.
  • the stud is not driven by powder gases but, for instance, by air under pressure
  • a cartridge a ⁇ corresponding device for producing or conveying air under pressure is to be provided as is known, for instance, in connection with air rifles.
  • the protective plate or shield 28a is connected to the sleeve 19a, which latter, by means of a thread 30, is screwed onto the casing 7a.
  • the ring pin Sa may be designed in a manner similar to that described in connection with the discussion of Fig. 1 so that when the sleeve 19a is pressed forwardly, the ring pin spring 6a is loaded. In contrast to the arrangement of Fig. 1, it is, however, not necessary to limit the relative movement between firing pin a and member 23a.
  • the casing 7a and sleeve 19a move forwardly against the thrust of the spring 18a until the barrel muzzle and the front surface of the protective plate or shield 28a or flush with each other, or when the said surface is uneven, are at least approximately flush with each other.
  • the release extension or tongue a faces the nose 25a of the trigger 16a so that the stud can be red. Due to the effect of the recoil, the barrel 1a. and the breech block 2a may swing back against the thrust of the spring 18a without causing the shock to pass onto the casing 7a and the handle 24a.
  • the barrel can be withdrawn from the breech block and pulled out toward the front from the Vprotective plate or shield 28a without the necessity of removing the sleeve 19a.
  • VFor purposes of dismantling the tool first the sleeve 19a is screwed off from the casing 7a, whereupon the further dismantling is effected in the same manner as described with the embodiment of Fig. l, namely, by pressing the extension or tongue 15a inwardly by means of an appropriate tool or by a correspondingly designed trigger 16a, whereupon the breech block is removed together with the release member 10a. Thereupon also the firing pin 5a with the firing pin spring 6a. and the return spring 18a may be removed.
  • the barrel 1a protrudes already in its rest position beyond the protective plate 20a to such an extent that the muzzle of the barrel can be clearly observed when placing the tool .upon the surface into which the stud is to be driven.
  • pressure is exerted upon the butt 24a whereby the housing 7a is moved forwardly while spring 18a and the tiring pin spring 6a are compressed.
  • Fig. 2a shows the thus obtained end position.
  • Fig. 3 differs from that of Fig. 2 primarily in that not the protective plate or shield 28b itself but a pipe 33 surrounding the barrel serves as abutment.
  • the pipe 33 is provided with a flange 34 which is located between the sleeve 19h and the casing 7b. In this way the pipe 33 is non-displaceably connected with the casing 7b.
  • the tiring of the stud is similar to that described in connection with Fig. 2.
  • the release extension 15b faces the nose 25h of the trigger 1619 so that the stud can be red.
  • the barrel and closure member can return against the thrust of the spring 181; without the shock being directly conveyed to the casing 7b and the handle 2417.
  • the embodiment of Fig. 3 has the further advantage over the embodiment of Fig. 2 that the relative movement between barrel and casing can be effected to the required extent and the stud can be fired also when the pro-tective plate or shield 28b, due to uneveness of the surface into which the stud has to be tired, Vcan not be fully placed against said surface and the driving ktool has to be slightly inclined.
  • a firing of the stud is not possible with both the embodiments of Figs. 2 and 3 when the tool must assume a greater inclined position. This is intentionally done so in order to avoid accidents.
  • the ⁇ distance over which the barrel and the closure member may travel after the casing has been pushed forwardly, i.e., after firing the stud, as the result of the recoil and against the thrust of the spring 18, 18a, 13b is preferably selected of such magnitude that the recoiling energy is completely absorbed by the spring 18, 18a, 1gb.
  • a firing pin movably mounted in said casing in axial direction thereof, iirst spring means arranged in said casing and continuously urging said tiring pin into firing position, a sliding member connected to the breech end of said barrel and slidably mounted in said casing, said sliding member being provided with a passage arranged in alignment with said tiring pin for allowing the latter to pass therethrough to bring about a ring action, control means movable on said sliding member in a direction transverse to the longitudinal direction of said tiring pin, said control means being provided with a slot and being movable from an effective position in which said slot is out of alignment with said ring pin thereby preventing said tiring pin from advancing into said passage into an
  • a firing pin movably mounted in said casing in axial direction thereof, rst spring means arranged in said casing and continuously urging said ring pin into tiring position, a sliding member arranged at the breech end of said barrel and slidably mounted in said casing, said sliding member being provided with a passage arranged in alignment with said tiring pin for allowing the latter to pass therethrough to bring about a firing action, control means movable on said sliding member in a direction transverse to the longitudinal direction of said ring pin, said control means being provided with a slot and being movable from an effective position in which said slot is out of alignment with said tiring pin thereby preventing said tiring pin from advancing into said passage into an ineifective position in
  • a barrel adapted to receive a stud to be tired, a breech block connected to said barrel, a casing having a longitudinal slot and housing said breech block, said breech block being displaceably mounted in said casing, rst spring means arranged between said breech block and said casing and continuously urging said breech block to move in a forward direction, ring pin means arranged between said breech block and said housing, second spring means continuously urging said firing pin means forwardly into a certain position representing its ring position, releasing means displaceable in said breech block in a direction transverse to the longitudinal direction of said barrel and normally engaging said ring pin to prevent the same from moving to its tiring position, said releasing means comprising an extension extending through said longitudinal slot of said casing, a front end wall closing the front end of said slot and being engageable with said extension to limit the forward movement of said breech block, a handle connected to said casing, and trigger means tiltably supported by said handle and

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US489567A 1954-02-23 1955-02-21 Driving tool Expired - Lifetime US2966683A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE339598X 1954-02-23

Publications (1)

Publication Number Publication Date
US2966683A true US2966683A (en) 1961-01-03

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Application Number Title Priority Date Filing Date
US489567A Expired - Lifetime US2966683A (en) 1954-02-23 1955-02-21 Driving tool

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US (1) US2966683A (de)
BE (1) BE535556A (de)
CH (1) CH339598A (de)
DE (2) DE1067377B (de)
FR (1) FR1123658A (de)
GB (1) GB790554A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038159A (en) * 1957-11-13 1962-06-12 Olin Mathieson Stud driver attachment
US3060436A (en) * 1956-12-31 1962-10-30 Olin Mathieson Tool
US3283983A (en) * 1965-05-04 1966-11-08 Omark Industries Inc Powder actuated tool
US3567098A (en) * 1966-12-23 1971-03-02 Bostitch Div Of Textron Fastener driving apparatus operable under pressure conditions greater than line pressure
US3816951A (en) * 1973-01-30 1974-06-18 Gunnabo Bruks Ag Trigger mechanism for cartridge tool
US4061261A (en) * 1973-11-28 1977-12-06 Avesta Jernverks Aktiebolag Device for performing working operations on a workpiece by detonation of blasting charges
US4646799A (en) * 1986-01-27 1987-03-03 Cobb William O Wood splitting device
US4730653A (en) * 1985-04-11 1988-03-15 Edward L. Scott Log splitter
US5201449A (en) * 1992-06-29 1993-04-13 Illinois Tool Works Inc. Pneumatically powered or combustion-powered fastener-driving tool useful with brick-faced siding
US5962804A (en) * 1998-06-16 1999-10-05 Lee; Cheng-Ho Actuating device of a dynamite gun

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046557A (en) * 1954-05-17 1962-07-31 Omark Industries Inc Explosively actuated tool
US3005202A (en) * 1957-09-12 1961-10-24 Omark Industries Inc Explosively actuated tool
CN107803792B (zh) * 2017-10-25 2024-03-08 四川力协精工科技股份有限公司 改进型射钉器

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE515669A (de) * 1951-11-21
BE521711A (de) * 1953-01-24
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
US2576473A (en) * 1950-02-01 1951-11-27 Powder Power Tool Corp Method of securing a fastening element in concrete
US2660726A (en) * 1951-06-07 1953-12-01 Weingart Ben Means for positioning and holding fasteners in explosively actuated fastener drivingtools
GB708692A (en) * 1951-04-27 1954-05-05 Richard Nascher A dowel gun for shooting dowels, bolts and the like into masonry and steel girders
US2775762A (en) * 1951-09-10 1957-01-01 Hilti Martin Explosively actuated fastener driving tool

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US2576473A (en) * 1950-02-01 1951-11-27 Powder Power Tool Corp Method of securing a fastening element in concrete
GB708692A (en) * 1951-04-27 1954-05-05 Richard Nascher A dowel gun for shooting dowels, bolts and the like into masonry and steel girders
US2660726A (en) * 1951-06-07 1953-12-01 Weingart Ben Means for positioning and holding fasteners in explosively actuated fastener drivingtools
US2775762A (en) * 1951-09-10 1957-01-01 Hilti Martin Explosively actuated fastener driving tool
BE515669A (de) * 1951-11-21
BE521711A (de) * 1953-01-24

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060436A (en) * 1956-12-31 1962-10-30 Olin Mathieson Tool
US3038159A (en) * 1957-11-13 1962-06-12 Olin Mathieson Stud driver attachment
US3283983A (en) * 1965-05-04 1966-11-08 Omark Industries Inc Powder actuated tool
US3567098A (en) * 1966-12-23 1971-03-02 Bostitch Div Of Textron Fastener driving apparatus operable under pressure conditions greater than line pressure
US3816951A (en) * 1973-01-30 1974-06-18 Gunnabo Bruks Ag Trigger mechanism for cartridge tool
US4061261A (en) * 1973-11-28 1977-12-06 Avesta Jernverks Aktiebolag Device for performing working operations on a workpiece by detonation of blasting charges
US4730653A (en) * 1985-04-11 1988-03-15 Edward L. Scott Log splitter
US4646799A (en) * 1986-01-27 1987-03-03 Cobb William O Wood splitting device
US5201449A (en) * 1992-06-29 1993-04-13 Illinois Tool Works Inc. Pneumatically powered or combustion-powered fastener-driving tool useful with brick-faced siding
US5962804A (en) * 1998-06-16 1999-10-05 Lee; Cheng-Ho Actuating device of a dynamite gun

Also Published As

Publication number Publication date
BE535556A (de)
CH339598A (de) 1959-06-30
DE1071006B (de) 1959-12-10
FR1123658A (fr) 1956-09-25
DE1067377B (de) 1959-10-15
GB790554A (en) 1958-02-12

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