US3166296A - Apparatus for extracting metal staples - Google Patents

Apparatus for extracting metal staples Download PDF

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Publication number
US3166296A
US3166296A US152526A US15252661A US3166296A US 3166296 A US3166296 A US 3166296A US 152526 A US152526 A US 152526A US 15252661 A US15252661 A US 15252661A US 3166296 A US3166296 A US 3166296A
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US
United States
Prior art keywords
staple
blade
jaw
lower jaw
guide
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
US152526A
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English (en)
Inventor
Fournier Michel
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
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3166296A publication Critical patent/US3166296A/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
    • B25C11/00—Nail, spike, and staple extractors

Definitions

  • the invention has the principal object of providing a staple extractor of minimum dimensions and which is extremely sturdy and very inexpensive to produce.
  • Another object of the invention is to obtain a staple extractor which gives full dependability in operation'because the staple can be engaged by two different means, which moreover cooperate with one another in order to reinforce one anothers action.
  • the staple extractor comprises two jaws, on one of which a blade is articulatedly designed to engage the staple when in position, while a second jaw serves as a support base on the support of the staple and a means of guiding the said blade, guiding means being provided to effect the raising of the blade above the level of the support base after the engagement of the staple, and thereby to extract the staple.
  • the engagement of the staple by the blade is facilitated by a stop, which arrests the relative movement of the second jaw in relation to the staple, and thus contributes toward fixing the point of engagement.
  • This stop is preferably bevelled with an oblique surface in relation to the support base, so as to initiate the raising movement of the blade.
  • this stop is in the form of a rounded point, so as to facilitate its engagement beneath the staple on the side of the staple opposite to the side by which it is engaged by the blade.
  • the device thus completed can be considered as a combination of two means of engagement of theblade, acting in opposite directions to one another, one serving where necessary as a stop for the staple in order to facilitate the action of the other,
  • the blade will advantageously be cut away to provide two points of engagement one on each side of the point of engagement of the bevel.
  • FIGURE 1 is a general view of the device according to the invention.
  • FIGURE 2 is a perspective view showing the placing in position of the staple extractor in relation to the staple, the sheets of paper which the staple is supposed to join together and constituting the support of the staple not having been shown for the sake of clarity in the drawing.
  • FIGURE 3 is a perspective view, from the same angle as FIGURE 2, showing the end of the attack immediately before ejection.
  • FIGURE 4 is a view in elevation of the blade according to another embodiment
  • FIGURE 5 is a plan view of the blade of FIG. 4, and
  • FIGURE 6 is a detail of the guide of FIG. 4.
  • 1 designates the jaw by which the blade 2 is articulated and which will be referred to as the upper jaw, while 3 designates the second or lower jaw.
  • the blade 2 is articulated at 4 on the jaw [by means of an axis around which a coil spring 5 is wound, the said spring having the eifect of moving apart the jaw 1 and the blade 2.
  • the jaws 1 and 3 are articulated together at 6.
  • the bottom jaw 3 has an opening 7 of generally rectangular shape but having a projecting part 8 forming a paper hold-down portion and stop means of rounded shape and bevelled.
  • the blade 2 is here made in a single piece which serves at the same time as blade and blade carrier. At the rear part, the sheet metal has been folded to form two side walls 9 which have above all the function of serving as a support for the articulation 4.
  • the front part of the blade 2 has been cut away to provide two points of attack 10 and 11, intended to attack the staple symmetrically in relation to the longitudinal axis of the bevel of the hold-down portion 8.
  • two side tongues have been cut out at 12 and 13, by which the blade bears on the base which is supplied for it by the fiat part of the lower jaw 3 on each side of the rectangular opening 7 and which also bears on the raised sides of the said lower jaw. A double guiding of the blade is thus obtained.
  • the guide 14 is welded to the free end of the blade 15, while the other end of the said blade is fixed to the jaw 1 by a screw 26.
  • the branches 16 and 17 have a spacing so calculated that they can engage exactly in the opening 7 and thus serve as a means of guiding for the guide 14 itself and consequently for the blade 2.
  • the guide 14 bears by the ends or its lower generatrix, at 19 and at 20, on the base of the jaw 3, thus constituting a sort of slide, and thus contributing to the guiding.
  • the length of the cylinder 14 is so calculated that the end faces 21 land 22 also serve as a guide by following the raised side walls of the jaw 3.
  • the guide 14 On its front face the guide 14 can have a semi-cylindrical slot 18 in which at the end of the movement the point of the bevel 8 can be received.
  • the auxiliary guide device which has been hereinabove described has been replaced by an equivalent device which constitutes an alternative for it and which consists in folding the blade so as to form a synclinal which is represented by the broken line 25.
  • the lower generatrix of the synclinal 24 may be likened as regards its operation, to the lower generatr-ix of the cylinder 14 in FIG. 4.
  • 23 designates the staple, but the sheets of paper connected by the staple have not been shown.
  • the sheets of paper which it connected together are held securely by the pressure applied by the support base, and not only by the whole of that base, but particularly by the bevel which presses against the paper at the most sensitive point, that is to say practically between the two folded branches of the staple.
  • the middle part of the staple being raised as shown in FIGURE 3, the'ends of the stapleare straightened, so that it tends to assume its original rectangular shape or a similar. shape.
  • a staple extractor comprising in combination an upper and a lower jaw, a pivot, said jaws being pivoted at one of their extremities on said pivot, a blade pivoted on the upper jaw at a distance from said pivot extending toward the said lower jaw at an angle'thereto and having an extremity designed to engage the crossbar of a staple to be extracted, said lower jaw being designed to constitute a support base and having a paper 4% hold down and staple engageable stop means at its end remote from said pivot, and guide means provided on said lower jaw to guide the movement of said extremity of said blade engaging the crossbar of the staple toward said hold down and stop means as a consequence of the relative movement of said jaws.
  • stop means on said lower jaw being disposed at a distance from said extremity of said blade when the extractor is positioned on its support base, whereby said stop means abuts the crossbar of the staple upon movement of said jaws when said blade is operated by the upper jaw.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US152526A 1960-12-28 1961-11-15 Apparatus for extracting metal staples Expired - Lifetime US3166296A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR848140A FR1288070A (fr) 1960-12-28 1960-12-28 Dégrafeuse pour enlèvement des agrafes métalliques

Publications (1)

Publication Number Publication Date
US3166296A true US3166296A (en) 1965-01-19

Family

ID=8745598

Family Applications (1)

Application Number Title Priority Date Filing Date
US152526A Expired - Lifetime US3166296A (en) 1960-12-28 1961-11-15 Apparatus for extracting metal staples

Country Status (5)

Country Link
US (1) US3166296A (fr)
CH (1) CH375697A (fr)
ES (1) ES270770A1 (fr)
FR (1) FR1288070A (fr)
GB (1) GB984796A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2223978B (en) * 1988-10-04 1993-05-26 Gordon William Flitcroft Staple remover

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1153904A (en) * 1915-06-10 1915-09-21 John F Muffley Button-remover.
US1166419A (en) * 1914-12-16 1916-01-04 Edward Thomas Allan Staple-puller.
US1294600A (en) * 1918-03-21 1919-02-18 John W Baldwin Button-remover.
US1948096A (en) * 1931-12-18 1934-02-20 Boston Wire Stitcher Co Staple extractor
US2539171A (en) * 1945-06-12 1951-01-23 John A Yerkes Staple remover
FR1019366A (fr) * 1950-05-31 1953-01-21 Perfectionnements apportés aux appareils destinés à l'extraction d'agrafes de bureau reliant des papiers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1166419A (en) * 1914-12-16 1916-01-04 Edward Thomas Allan Staple-puller.
US1153904A (en) * 1915-06-10 1915-09-21 John F Muffley Button-remover.
US1294600A (en) * 1918-03-21 1919-02-18 John W Baldwin Button-remover.
US1948096A (en) * 1931-12-18 1934-02-20 Boston Wire Stitcher Co Staple extractor
US2539171A (en) * 1945-06-12 1951-01-23 John A Yerkes Staple remover
FR1019366A (fr) * 1950-05-31 1953-01-21 Perfectionnements apportés aux appareils destinés à l'extraction d'agrafes de bureau reliant des papiers

Also Published As

Publication number Publication date
CH375697A (fr) 1964-03-15
ES270770A1 (es) 1962-03-16
FR1288070A (fr) 1962-03-24
GB984796A (en) 1965-03-03

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