1980-05-08
1982-07-20
Jones, Jr., James L.
Bridges
B25C 100
Patent
active
043401015
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a nailing tool in the form of a hammer. The knocking in of a nail is occasionally complicated, particularly when the right hand holds the hammer while the left hand is holding the component requiring to be fixed, and then a nail has to be set into position. A considerable amount of skill is required for overhead nailing for vertical or horizontal fixing.
Swiss Pat. No. 267 760 attempts to remedy this difficulty. It proposes forming the hammer head with a recess into which a nail can be inserted and is retained by means of a magnet. This allows the nail to be set into position if careful handling is applied, but the disadvantage of such a system is that the nail head has only little support, because its bearing surface is too small and both hands are again required for inserting a nail into the recess.
The object of this invention is to provide a nailing tool which, with single-handed operation, allows a number of nails to be successively set into position and knocked home quickly and reliably.
To this end, the invention provides a nailing tool in the form of a hammer, which is characterized in that its handle contains a magazine for nails, said magazine communicating with a passage leading to a deflector means, the latter being connected, at the hammer head, to a catcher means, the passage containing a nail retainer while a permanent magent is provided near the hammer head and the catcher, together with a stop which is set back from the striking surface of the hammer head, said stop being situated above the nail that has passed through.
One exemplified embodiment of the subject matter of the invention is illustrated in the drawing and its use is explained hereinafter.
FIG. 1 is a longitudinal section of a nailing tool.
FIG. 1a shows the nail retainer in side elevation to an enlarged scale.
FIGS. 2 to 4 show the tool in use.
The drawing shows the handle in section. It could be constructed, for example, from two symmetrical halves. The handle has been given the general reference 10. The rear part of the handle contains a cavity 11 which forms the magazine for the nails N. At its rear end the cavity 11 is closed by a removable plug 12. At its front end extending towards the hammer head 20, the cavity 11 merges into a passage 13 leading into a deflector 14. While the passage 13 has a circular cross-section of a size such that it allows the nail head to pass with clearance, the deflector 14 is a flat curved cavity, the width of which is equivalent to the diameter of the passage 13, and is open at the front. Reference 15 denotes a fork mounted at the front open end of the curved deflector 14 while 16 denotes a nose or auxiliary striking surface produced by reducing the diameter of the deflector cavity. As shown in FIG. 1, the nose 16 is located below and rearward of, and extends generally parallel to, the striking face 20' of hammer head 20.
If the tool is held with the hammer head 20 extending obliquely downwards as shown in FIG. 2, a nail N, that is located in the deflector 14 falls toward the hammer head under the influence of gravity and, in doing so, is pivoted clockwise about its longitudinal axis through about 45.degree.. When the nail, so pivoted, reaches the open front end of deflector 14, the nail then drops, point first, into the fork 15, which retains the nail at its head so that it does not drop out of the deflector 14. A permanent magnet 21 recessed into the hammer head 20 adjacent and at a distance from the fork 15 then pulls the nail N.sub.1 laterally out of the fork 15 towards the said magnet and it continues to be held only by the magnet 21. The nose 16 , forming an interior striking head that is disposed adjacent the head of the nail N.sub.1 held by magnet 21, is then used to set this nail N.sub.1 into the workpiece 37, into which it is shallowly driven. The auxiliary striking surface or nose 16 is an integral part of the handle 10 (FIG. 1) but could alternatively be formed by a shoulder on the hammer head 20.
To ensure that only a single nail passes to the deflector
REFERENCES:
patent: 736465 (1903-08-01), Vogue
patent: 864733 (1907-08-01), Hamilton
patent: 1001261 (1911-08-01), Forth
patent: 1135784 (1915-04-01), Faulkner
patent: 1163409 (1915-12-01), Jacoby
patent: 1609592 (1926-12-01), Williams
patent: 1678680 (1928-07-01), Patton
patent: 2816289 (1957-12-01), Moinichen
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