US2872683A - Staple driving mechanism - Google Patents

Staple driving mechanism Download PDF

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Publication number
US2872683A
US2872683A US713500A US71350058A US2872683A US 2872683 A US2872683 A US 2872683A US 713500 A US713500 A US 713500A US 71350058 A US71350058 A US 71350058A US 2872683 A US2872683 A US 2872683A
Authority
US
United States
Prior art keywords
staple
driver
sleeve
catch
magazine
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
US713500A
Other languages
English (en)
Inventor
Holley Walter Henry
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.)
MCGARRY AND COLE Ltd
Original Assignee
MCGARRY AND COLE Ltd
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 MCGARRY AND COLE Ltd filed Critical MCGARRY AND COLE Ltd
Application granted granted Critical
Publication of US2872683A publication Critical patent/US2872683A/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
    • B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/16—Staple-feeding devices, e.g. with feeding means, supports for staples or accessories concerning feeding devices

Definitions

  • the present invention relates to a staple-driving mechanism.
  • the staple travels only a short distance down a guideway from the staple magazine before coming into contact with the work to which the staple is to be applied.
  • a staple rammer which may be usecbfor example, in the manufacture of bedding, for the stapling of coil springs to a bed base in furniture manufacture.
  • a staple rammer which may be usecbfor example, in the manufacture of bedding, for the stapling of coil springs to a bed base in furniture manufacture.
  • it is necessary to be able to insert'the stapling head through the springs, and to allow this to be done the laterally projecting magazine has to be at a height sufficient to clear the top of the springs when the staple head is in contact with the work.
  • the staple driver blade has a vlong travel, since it must be capable of being raised suificiently in its guideway to pick otl the leading staple from the pack of staples in the magazine.
  • a staple-driving mechanism is provided with a catch mechanism located within the body of the stapling head of the mechanism to prevent the staple driver blade being raised to a height sufficient to permit the entry of a staple from the magazine into the staple guideway, unless the blade has been moved down the guideway substantially to its bottom end.
  • a catch member carried by the staple driver and a sliding sleeve movable through a limited distance lengthwise of the staple driver and over the catch member the sleeve rendering the catch member inoperative at the upper position of the sleeve and releasing the catch member at its lower position
  • the sleeve being movable between two stops in the body located so as to cause thesleeve to move up the stapled driver as the driver reaches the bottom end of its travel and to move down the staple driver as it reaches the top end of its travel.
  • a catchengaging stop adapted to engage the catch member during upward movement of the driver with the sleeve in its lower position so as to arrest the driver before the blade atent uncovers the magazine.
  • the catch-engaging stop may be and preferably is co-incident with the upper stop for the sleeve.
  • Figure l is a side view of a staple-driving rammer of a type for which a catch mechanism of the present invention is suitable.
  • Figure 2 is a longitudinal section of the rammer of Figure 1.
  • Figure 3 is a diagrammatic cut-away perspective of the catch mechanism on a larger scale.
  • Figures 4 to 7 are sectional side views of the staple driving rammer of Fig. 1 which illustrate the operation of the catch mechanism.
  • the staple rammer shown in Figures 1 and 2 of the drawings is generally of well-known construction and only the novel catch mechanism associated with it will be described in detail.
  • the stapling head-of the rammer has, in a conventional manner, a barrel 1 made up of a channel member having a block member between the arms of the channel member at its lower end, so as to define a narrow guideway of just sufficient size to permit the passage of a staple and of the stapledriving blade 2.
  • a staple magazine 3 of conventional construction projeets laterally from the side of the barrel to feed staples individually from ya pack of staples into the guideway in a conventional manner.
  • the staple barrel 1 of the stapling head of the rammer is provided with a rubber grip 4.
  • the staple-driving blade 2 is driven by a staple driver having a weighted handleS and a shank 6 guided in the barrel 1, the blade 2 being held in driving connection with the shank 6.
  • the handle 5 is pulled out until the bottom end of the blade 2 has cleared the staple magazine and reaches the position shown in Figure 4, to permit another staple to be fed into the guideway from the magazine.
  • the blade 2 is then drivable to the position shown in Figure 7 in which the bottom end of the blade just reaches the bottom end of the barrel 1 and further travel of the handle is prevented by contact between the handle and the top end of the barrel.
  • the top end of the driver rod 6 is a round portion 7 and guided in a round hole in an end cover member 8 secured to the top end of the barrel 1.
  • the top end of the barrel 1 has a square section guideway for a portion 9 of the staple driver, upon which staple driver the staple driver blade 2 is carried.
  • the portion ii is of generally square section for movement in this portion of the barrel, but one corner of the square portion of the driver is cut away to permit it to pass a bottom end stop 10 in the form of a triangular piece of metal let into one corner of the guideway.
  • the stop 10 and the portion 9 of the driver could, of course, take other co-operating shapes.
  • the catch mechanism which forms the special feature of the present invention, is mounted on the round portion 7 of the driver 6.
  • the catch mechanism consists of a bow-shaped catch member 11 having a rounded rear surface 12 to permit the member 11 to rock on a flat surface 14 on the portion 7, and a square section sleeve 15 adapted to slide in the square section portion of the barrel 1.
  • the operative part of the catch member is the end face 16 and the upper end of the catch member is therefore spring-loaded by means of a small compression spring 17 bearing against a ball 18, positioned in a cross drilling in the portion 7. (The spring 17 and ball 18 are shown exploded in Figure 3 for clarity.)
  • the sleeve 15 hits the bottom end stop 10 and slides up the round portion 7. In so doing, the bow-shaped catch member 11 is rocked on its rounded back surface and moved into an inoperative position in which the end face 16 is within the periphery of the portion 7 and does not project above its surface.
  • the top end cover 8 houses a hardened collar 19 which likewise has a round aperture through it in which the round portion of the shank is guided.
  • the collar 19 acts as the upper stop for the square section sleeve 15, which slides down the round portion 7 when arrested by this upper stop, until the sleeve comes down firmly against the shoulder provided by the top of the portion 9 of the driver.
  • the collar 19 thus also prevents the driver from being drawn up out of the barrel.
  • a shallow inclined slot 20 ( Figure 7) is preferably cut in the top end of the barrel wall, into which the upper end of the catch member 11 enters, so that it is pressed outwardly by its spring 17 to project out of the rod farther than it otherwise would.
  • a catch mechanism for preventing the introduction of a further staple into the staple guideway, the said catch mechanism comprising a catch member carried by the staple driver and a sliding sleeve movable through a limited distance lengthwise of the staple driver and over the catch member, the sleeve rendering the catch member inoperative at the upper position of the sleeve and releasing the catch member at its lower position, upper and lower stops being positioned in the body to co-operate with said sleeve, the lower stop being positioned to engage the sleeve and move it lengthwise up the driver and over the catch as the driver reaches the bottom of its travel and the upper stop being positioned to engage the sleeve and move it lengthwise down the driver to uncover the operative upper end of the catch member as the driver reaches the top of

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US713500A 1957-02-18 1958-02-05 Staple driving mechanism Expired - Lifetime US2872683A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5494/57A GB818484A (en) 1957-02-18 1957-02-18 Improvements in or relating to staple driving mechanism

Publications (1)

Publication Number Publication Date
US2872683A true US2872683A (en) 1959-02-10

Family

ID=9797258

Family Applications (1)

Application Number Title Priority Date Filing Date
US713500A Expired - Lifetime US2872683A (en) 1957-02-18 1958-02-05 Staple driving mechanism

Country Status (3)

Country Link
US (1) US2872683A (fr)
FR (1) FR1205869A (fr)
GB (1) GB818484A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263638B (de) * 1961-10-18 1968-03-14 Normann Boegle Handgeraet zum Eintreiben von Befestigungsmitteln in Form von Klammern, Naegeln u. dgl.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR1205869A (fr) 1960-02-05
GB818484A (en) 1959-08-19

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