A Clip-nail for Joining the Sides, Lids, and Bottoms of Boxes and the like.
Year: 1892

page_text: Date of Application, 12th May, 1892
Complete Specification Left, 13th Feb., 1893-Accepted, 1st Apr., 1893
PROVISIONAL SPECIFICATION.
A Clip-nail for Joining the Sides, Lids, and Bottoms of Boxes and
the like.
I, MACKAY JOHN SCOBIE Lieut. Col. 3rd Batn. Royal Scots and of the
Naval and Military Club Piccadilly London do hereby declare the nature of this
invention to be as follows:—
The clip-nail has two legs or parts, exactly similar. The clip portion which
fits on to the angle of a box is inch broad and is of thin iron, about the thickness
of card board and the two legs at this point join at right angles. The description
of one leg is as follows:-
Following the course of the clip inwards from the right angle it becomes
gradually narrower until at about one inch from the angle it becomes about the
thickness of a 2 inch nail and there it leaves the side of the box and curves upwards
to a point 2 inches from the right angle; and here it bends at right angles
inwards towards the box in the form of a curved nail the head being inch across
and gradually coming to a sharp point. This nail to be inch long. The clip-
nail as described above to be made in any size according to the proportions
stated.
Dated this Seventh day of May 1892.
MACKAY J. SCOBIE.
COMPLETE SPECIFICATION.
A Clip-nail for Joining the Sides, Lids, and Bottoms of Boxes and
the like.
I, MACKAY JOHN SCOBIE, Lieut. Col. 3rd Batn. Royal Scots and of the
Naval and Military Club, Piccadilly, London, 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:-
This invention has for its object a claw clip, clip nail or strong clamp for joining
the sides, lids and bottoms of boxes and for like uses.
The claw clip suitable for joining two parts at right angles as the sides or the
side and bottom of a box consists of two legs or limbs similar the one to the other.
These limbs meet in a right angle and each terminates at its outer end in a curved
claw keenly pointed at its extremity. This claw is directed inwards. At and
near the angle the limbs are comparatively broad and they become narrower in
receding from the angle towards the points. At some distance from the angle
the limbs are bent outwards so that before driving the claws, the angle of the
claw clip or clamp may be applied to the work with the points just touching it.
The curve of the claw is approximately circular with the bend in the limb
occupying the centre of curvature. The angle at the root of the claw where it
meets and unites with the limb is a right angle.
In the use of this claw clip it is applied to the angle of the work in the place
where it is required to be fixed and then by blows of a hammer the claws are
driven into the wood; the limbs of the claw clip or clamp being at the same time
straightened out.
From the proportions given to the parts it follows that the claws enter the wood
truly making holes no larger than is necessary to receive them. The angle of

page_text: the claw clip retains its position on the edge and is drawn firmly up to the angle
of the work.
Claw clips or clamps for internal angles and for corners are made in a strictly
analogous manner as is hereinafter more fully described.
In order that my invention may be fully understood and readily carried into
effect I will proceed to describe the drawings hereunto annexed.
Figure 1 is a side view of a strong claw clip or clamp suitable to fasten securely
the two sides of a box or one side and the bottom or for like uses.
Figures 2, 3, 4 and 5 are transverse sectious at the positions marked on Figure 1
by the lines 2-2, 3-3, 4-4, and 5-5 respectively.
Figure 6 is an underside view of the claw clip.
Figure 7 shews the claw clip or clamp applied to the work ready for driving.
Figure 8 shows the shape which the claw clip assumes when driven.
Figure 9 is a side view of a claw clip adapted to strengthen an internal angle
and Figure 10 shews the shape which the claw clip represented by Figure 9
assumes when driven.
Figure 11 shews a three limbed claw clip to be applied to an external corner
of a box or the solid angle formed by the junction of any three planes of wood.
Figure 12 is a section on the line 12-12 in Figure 11.
Figure 13 is a perspective view of the claw clip shown by Figures 11 and 12.
Figure 14 shows a three limbed claw clip to be applied within at the corner of
a box.
Figure 15 is a section on the line 15, 15, in Figure 14.
Figure 16 is a perspective view of the claw clip shown by Figures 14 and 15.
In Figure 1 a is the angle of the claw clip or clamp which fits to the exterior
angle of the work. bb are the two legs or limbs. cc are the pointed claws in
which the limbs terminate. Each limb is bent near the place marked b¹ so as to
bring the point of the claw before it is driven to a position which admits of
the angle being closely applied to the work in the manner represented in
Figure 7.
The curvature of the claw is approximately about the point b and the form is
such that the distance from the angle at a to the point of the claw at o' is equal
to or slightly greater than the length of the limb measuring along its surface
from a to c³ upon the head of the claw.
Thus the form is such that the claw is able to enter fairly and truly into the
work and in doing so it retains the angle a of the claw clip securely against
the angle of the work and indeed draws it slightly inwards so as to ensure a
firm grip.
The claw clip for internal use which is represented by Figures 9 and 10 may
be used in conjunction with the claw clip already described or otherwise. The
external claw clip operates mainly in tension to prevent the parts being drawn
asunder whilst the internal claw clip operates as a stop to prevent the one side
of a box being thrust inwards past the other and also to exert a thrust in the
contrary direction.
I make claw clips or clamps for corners each with three limbs in three different
planes and meeting in a solid angle where the clamp shows a strong solid metal
protecting corner.
Figures 11, 12 and 13 show such a claw clip adapted to be applied over the
corner of the work and then the three claws are driven say one into the side,
another into the end and a third into the bottom of the box. Each limb of
the claw clip or clamp bisects the angle of the side end or bottom to which it is
applied.
I also as shown by the Figures 14, 15 and 16 make claw clips for internal
corners.
These claw clips or clamps may be made of any size requisite for the work upon
which they are to be employed..

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A claw clip or clamp made of strong metal and having limbs meeting in an
angle and having a curved claw nail at the extremity of each limb, the parts
being so formed that the angle of the clamp can be applied closely to the angle
of the work and remain there whilst the claws are driven and that the direct
distance from the angle to the point of the claw is approximately the same as the
length of the limb measured along its surface.
2. Claw clips or clamps substantially as represented by the annexed drawings.
Dated this Ninth day of February 1893.
MACKAY J. SCOBIE.