CA2216691A1

CA2216691A1 - Nail pump

Info

Publication number: CA2216691A1
Application number: CA 2216691
Authority: CA
Inventors: Feliks Jasinski; Alan Dealey
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-11-19
Filing date: 1997-11-19
Publication date: 1999-05-19

Abstract

This invention is a manually operated tool for driving nails, which securely holds the nail to be driven in the central tube of a nozzle at the front of this tool, by means of a magnet. Force is applied to the head of the nail by means of a striker, securely attached to a striker housing which slides back and forth inside a guide tube, and forces the nail out of the nozzle. The movement of the striker assembly is controlled by the operator pushing and pulling on the hand grip which transmits this motion directly to the striker housing via the inside front face of the end cover grip which is screwed into and thus an integral part of the hand grip. The operator first pulls the hand grip to the full extent of the guide housing until it is stopped by the retainer, then holds the nozzle against the surface into which the nail is to be driven with one hand and operates the hand grip which activates the striker with a sliding movement of the other hand, in a manner similar to the operation of a hand-held bicycle tire air pump, thus driving the nail into the surface.
With the tool in a horizontal position, nails of various sizes can be pre-loaded into the nail magazine through a slot in the nail magazine cover. By releasing the safety catch, the spring in the guide housing pushes back the hand grip ready for the nail to be indexed into the nozzle. When a compartment in the nail magazine comes into line with the opening in the nozzle housing, the nail in the magazine compartment will drop through the opening into the central tube of the nozzle where it is held by a magnet until forced out by the striker. Nails may also be loaded into the nozzle manually from the front end by sliding the head of the nail in first where it will be held by the magnet until it is forced out by the striker.
On completion of the job and for storing purposes, the hand grip is pushed forward and secured with a safety catch, thus keeping the nozzle empty.

Description

SPECIFICATIONS
NAIL PUMP

This invention relates to a device for driving nails into wood with pumping strokes.

The device is superior to a hammer for driving nails for the following reasons:

a) The operator does not hold the nail in his fingers but instead the nail is held securely in the nozzle of the device by a magnet thus preventing injury to the operator's fingers;

b) Because the nail is held steady in the nozzle, and the striker always strikes the mail head squarely, the nail is driven straight with each stroke and does not bend;

c) The device can be used in a confined space where the swing of a conventional hammer would be impossible;.

d) The device can be used to drive nails vertically upwards over the head of the operator which is very difficult with a conventional hammer;

e) The nails are pre-loaded into the magazine of the device and, thus, the operator does not have to take more nails from storage during a job until the magazine has been emptied.

The new and distinguishing features of this device include the following:

a) Magnet incorporated into the nozzle to hold nails in place ready to be pumped;

b) The nail magazine and index which reloads the nozzle with a new nail after each pumping stroke;

c) The safety catch which secures the device in its closed position between jobs;
d) The ballbearing and spring which hold the nail magazine cover in a closed position;
e) The guide tube which ensures the striker slides in a straight line and controls the stroke by guiding the striker housing;

f) The end cover grip which secures the striker housing and the hand grip together.

The best materials to use in constructing the invention would include:

a) Aluminum for weight reduction and for its non-magnetic property;
b) Plastic for the non-wearing parts;
c) Steel for hardness and durability of the wearing parts;
d) Rubber for the outside of the hand grip and housing grip to improve grip and comfort.
The invention is described with reference to the drawing which shows a "exploded view" of the device from an angle.
The nozzle, with magnet, (1) is located at the very front of the device. It is the place where the nails drop from the nail magazine or are placed by the operator prior to being pumped into the wood.

The retaining screw (2) secures the nozzle to the nozzle housing (9).

The nail magazine cover (3) slides over the nail magazine (4) to hold and retain nails in place when indexed or use.

Ballbearing (5) and spring (6) hold the magazine cover (3) in a closed position.

Screw (7) and spring (8) index the rotation of the nail magazine so that it stops each time the slop of the magazine comes into line with the slot in the nozzle housing (9).

The nozzle housing (9) houses the nozzle (1) inside and the magazine (4) on the outside.

The housing screw (10) secures the housing grip (11) to the nozzle housing (9) allowing the operator to position the nozzle housing.

The locking device retaining screw (12), locking device housing (13), catch (14), pivot pin (15) , pin (16) and catch spring (17) combine to act as a locking device when the nail pump is not in use.
The guide tube (18) forces the striker housing (21) to slide in a straight line and controls the stroke.

Striker (19) which can be replaced to match the size of nail to be driven, makes contact with the nail, the screw (20) which holds the striker attached to the striker housing (21) slides in the guide tube (18). Spring (22) causes the striker (19) to back off far enough from the nozzle (1) so that a nail can be indexed into the nozzle (1).

A screw (23) holds retainer (24) in place to arrest the forward motion of a striker housing (21) controlling the maximum length of the stroke of the striker (19).

Guide housing (25) houses the guide tube (18).

The hand grip (26) is heavy to give the tool inertia, and knurled so that the operator gets a firm grip, and is secured to the striker housing (21) by a screw (27) and the end cover grip (28).

Claims

1. A manually operable tool for pumping nails into wood, comprising a striker guided by a housing which pumps nails from a storage magazine via a nozzle through the operation of a hand grip which slides on a guide housing. This tool is able to store a number of nails of varying sizes and puts the next nail to be driven into the wood in the appropriate position to be driven which drives nails straight and firmly without danger to the operator's fingers and which can be used effectively in a confined space or to drive nails vertically upwards into a surface above the head of the operator.

2. A tool as defined in Claim 1, without an indexing nail storage magazine in which case nails are loaded into the nozzle of the tool manually from the front end.