Improvements in or relating to Staple Drivers.
Year: 1897

page_text: Date of Application, 17th July, 1897-Accepted, 21st Aug., 1897
COMPLETE SPECIFICATION.
Improvements in or relating to Staple Drivers.
I, EDWARD CHARLES JOSEPH LOMAS, of 24, Woodbridge Street, Clerkenwell, in the
County of Middlesex, Jeweller and Goldsmith, do hereby declare the nature of this
invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :—
The object of the present invention is to provide an implement or tool to facilitate
the driving of staples in positions in which it would be difficult to drive them
otherwise, or to enable them to be more readily driven in ordinary positions.
The implement consists essentially of three parts, the case, the retaining device
and the plunger, to which three, other parts may or may not be added.
In the accompanying drawings,
Figure 1 is a plan of a staple driver constructed according to this invention, with
a staple in position ready to be driven;
Figure 2 is a sectional elevation on the line 2-2 of Fig. 1, the plunger being
shown in the position it would occupy if a staple had just been driven.
Like letters refer to like parts in both figures.
A is the case or receiver formed preferably of sheet metal, its shape being a hollow
rectangle in cross section. The case A acts as a guide to the plunger and also to the
staple, while it further serves as a receiver to hold the staple and carry it to the place
where it is intended to be inserted.
From the adjacent ends of each of two opposite sides viz., the two which are
parallel to the plane of the staple, portions are cut away to form recesses A¹ as shown,
the object of these recesses being to allow the case to be firmly held against the wall
or object into which the staple is to be driven, without injuring the object to be fixed
by the staple, such object being usually a wire or small pipe which would pass freely.
through the gap afforded by the recesses A¹.
The
B is a flat spring conveniently of steel, which may be attached to the case A by a
block B' between which and the case A the spring B is firmly held, or it may be
otherwise secured. At the free end of the spring is attached a small retaining-piece B
which protrudes into the interior through a hole in the side of the case A.
piece B2 is held in the position clearly shown in the drawings so that it is capable
under the pressure of the spring B of retaining a staple within the case A, while
also, allowing the staple to be forcibly inserted and ejected, the curved surface
causing the spring to yield and allow the passage of the staple, which is shown
at D.
C is a plunger which works in the case A, and projects so that it may be struck
with a hammer. A portion of one edge is cut away to form a recess C¹ whose length
determines the possible travel of the plunger, the case A fitting the plunger C fairly
closely so that the plunger cannot pass a pin A2 which passes from side to side
of the case, and engages with the shoulders formed at each end of the recess C¹,
the depth of the recess being such as to allow of free movement of the plunger
within the limits determined by the length of the recess and diamater of the
pin A
That end of the plunger which is in contact with the staple is preferably

page_text: somewhat concave as shown, while the other end to which the driving force is
applied, conveniently by a blow from a hammer, is preferably convex.
I do not confine myself to the above particulars of construction. I may vary the
shape or size of the case or plunger, or I may adopt other means for cliecking the
travel of the plunger, or provide it with a spring to maintain it normally in one
I do not confine myself
position without departing from the spirit of this invention.
to the use of a flat spring arranged in the manner described for the retaining
device.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination with a receiver such as A adapted to receive and guide a
staple, of a plunger such as C substantially as described.
2. In a tool of the kind described the combination with a receiver such as A and
plunger such as C of a retaining device such as B substantially as and for the
purpose described.
3. In a tool of the kind described the combination with a guide for the
plunger such as A of hollows or recesses such as A¹ substantially as and for the
purpose described.
4. The combination and arrangement of parts constituting the complete staple
driver substantially as described and illustrated in the accompanying drawings.
Dated this 17th day of July 1897.
E. C. J. LOMAS.
Boult & Wade,
Agents for the Applicant.