Elongated-member-driving apparatus – With means to support member and/or work relative to driver – Bias-type member holder
Patent
1982-04-30
1985-01-29
Schran, Donald R.
Elongated-member-driving apparatus
With means to support member and/or work relative to driver
Bias-type member holder
227147, 227139, B25C 100
Patent
active
044960921
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a means for orienting the turning angle of a nail about its longitudinal axis before driving in the nail by means of an apparatus adapted for mechanical nailing. Such an apparatus includes, on one hand, a nail holder holding the nail in position for nailing and, on the other hand, a nail driver for driving in the nail.
Existing apparatuses for mechanical nailing or nailing by machine completely lack means for turning or orienting the nail into a certain desired angular position about its longitudinal axis and holding the nail in this position prior to nailing. This is a great inconvenience when it is a matter of mechanical nailing with expanding nails, especially such expansion nails which, after nailing, exhibit one or more anchoring portions, i.e. portions of the nail expanded or split out from the shaft of the nail inside the material. Especially when using expansion nails in non-isotropic materials it is a great advantage to orient the nail into such an angle of orientation relative to the structure of the material that maximum gripping power is obtained.
A common such case is the use of expansion nails according to the Swedish Pat. No. 7703167-2 for nailing in wood or joining of wooden details. A portion of this expansion nail, situated adjacent the point thereof, is deformed outwardly towards both sides. It is obvious that such a nail will take a better hold in the wood and thus attain much greater gripping power if the expanding portions extend at right angles to the wood fibre direction than if they would extend in parallel with the fibre direction.
By this invention a positioning or orientation means is provided for orienting a nail into such a position of rotation that the nail gripping power attains a maximum after being driven into anisotropic materials. According to the invention this great advantage is achieved in a most simple, cheap and reliable manner in that the inner, nail-receiving cavity in the nail holder defines, along a portion of the nail, a guide seat of non-circular cross-section adapted to cooperate complementarily with a guide portion of the nail such that the nail will be held in a definitely fixed angle of orientation about its longitudinal axis relative to the nail holder.
In preferred embodiments of the invention the guide seat of the nail holder is adapted to guide portions of the nail comprising a non-circular nail head, a bulged portion of an expansion or rivet nail or a wedge or chisel-shaped point. In the latter case the guide seat is an edge seat in the nail holder.
An advantageous means is realized if the nail holder consists of at least two jaws which are movable outwards from the nail and away from each other and are kept resiliently pressed against each other. By this protruding nail portions such as the nail head and bulges of a rivet nail may be pushed through the entire nail holder by the nail-driver.
The invention will now be described in detail with reference to the accompanying drawing, in which:
FIGS. 1 and 2 show examples of two prior art types of expansion nails;
FIG. 3 is a longitudinal section through a nail holder including the nail shown in FIG. 1;
FIG. 4 is a cross-section of the nail holder, taken on line IV--IV in FIG. 3;
FIG. 5 shows the lower part of another nail holder adapted to a nail according to FIG. 2;
FIG. 6 is a section through nail and nail holder, taken on line VI--VI in FIG. 5;
FIG. 7 shows, in two relatively perpendicular directions, a nail according to FIG. 2, with a specifically shaped point; and
FIG. 8 shows, in two relatively perpendicular directions, corresponding to those shown in FIG. 7, a further nail holder adapted for cooperation with the nail shown in FIG. 7.
FIG. 1 shows an expansion nail 1 with an anchoring portion 2. The nail is driven into the material 3 to fasten a clip 4, for instance for wiring on a wall.
FIG. 2 shows an expansion nail 5 according to the above-mentioned Swedish patent, as used for joining of two wooden parts 7 and 8. The nail includes an expansion portion 6 extending
REFERENCES:
patent: 831303 (1906-09-01), Scott
patent: 2033361 (1936-03-01), Taylor et al.
patent: 2319348 (1943-05-01), Richards et al.
patent: 2332653 (1943-10-01), Marcy
patent: 2376936 (1945-05-01), Pfeffer
patent: 2502267 (1950-03-01), McPherson
patent: 2755453 (1956-07-01), Cloutier
patent: 2786202 (1957-03-01), Gaulke
patent: 3143915 (1964-08-01), Tendler
patent: 4017142 (1977-04-01), Clark et al.
Schran Donald R.
Wolfe James
LandOfFree
Arrangement in apparatus for mechanical nailing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement in apparatus for mechanical nailing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement in apparatus for mechanical nailing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-502482