Elongated-member-driving apparatus – With means to move or guide member into driving position – Adaptable to dispense different sizes or quantities of members
Patent
1994-01-21
1997-02-25
Hail, III, Joseph J.
Elongated-member-driving apparatus
With means to move or guide member into driving position
Adaptable to dispense different sizes or quantities of members
227119, 227120, B25C 516
Patent
active
056052693
DESCRIPTION:
BRIEF SUMMARY
ART FIELD
The present invention relates to an appliance for driving sharp pointed fastener elements into objects.
In particular, the invention relates to an item of equipment generally described as a gun, referred to also herein as a tacker or tacking appliance, by means of which fastener elements with sharp points present typically in nails, pins and staples of different sizes and shapes, can be driven into wood, plastics and similar materials. The fastener elements in question are graded according to size (length, gauge, etc.) in a number series, each designating a range of fasteners rated as nominally compatible, or rather comparable one with another, as regards the type of use and holding power.
BACKGROUND ART
Conventionally, the different types of fastener elements referred to above (which will be described more fully in due course) are driven into an object and a support together, for example so as to secure the former to the latter, by means of a suitable pneumatic, electromechanical or entirely mechanical (spring-loaded) tacking appliance. Such appliances are designed traditionally to operate with a single type of fastener, i.e. a nail or pin or staple of precise shape and dimensions, so that in situations where there is a need to use dissimilar fasteners for different purposes, there must also be a number of separate appliances ready to hand, each able to operate with a particular type of fastener.
Clearly, such a constraint occasions notable cost disadvantages, and reflects a current state of the art whereby users needing to operate with more than one of the aforementioned types of fastener element are obliged also to purchase or acquire a different appliance for each type.
Accordingly, the object of the invention is to overcome the drawback mentioned above by providing an appliance of the type in question that will operate universally with a variety of sharp pointed fastener elements, provided that all are of the same nominal size and strength.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described in detail, by way of example, with the aid of the accompanying drawings, in which:
FIG. 1 is a schematic representation of an appliance according to the present invention, shown in a side elevation and partly in section;
FIG. 2 shows certain of the parts of an appliance according to the invention, seen from the vertical cutting plane denoted II--II in FIG. 1;
FIG. 3 shows a detail of the appliance of FIG. 1, enlarged and in a front elevation;
FIGS. 4, 5 and 6 illustrate further parts of an appliance according to the present invention, seen in a horizontal section through A--A, FIG. 1;
FIG. 7 shows a detail of the appliance of FIGS. 1 to 6, viewed in plan from above and with certain parts omitted in the interests of clarity; and
FIG. 8 shows a detail of the forwardmost part of the appliance disclosed, in an alternative and preferred embodiment.
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1 of the drawings, 1 denotes a tacking appliance, in its entirety, comprising a substantially horizontal upper housing 2 of which the portion located center-right, in FIG. 1, affords a handgrip 3. The horizontal housing 2 incorporates a chamber (not illustrated) connected by way of a hose 4 with a compressed air supply schematically denoted 5, and communicating at bottom (on the left in FIG. 1) with the uppermost part of a vertically disposed second hollow body 6 by which a forcing element 7 is slidably accommodated and supported in a conventional manner (not illustrated).
The forcing element 7 is shown as a flat rod 8, vertically disposed and occupying a plane normal to the viewing plane of FIG. 1, of which the top end is connected in conventional manner (not illustrated) to an actuator element indicated schematically by the block denoted 9. Thus, the forcing element 7 can be provided with an impulsive downward movement each time the actuator element 9 is connected to the compressed air supply 5 by squeezing a manually operated control or trigger 10. A portion of the flat rod 8 acc
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FIMCA S.r.L.
Hail III Joseph J.
Stelacone Jay A.
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