Improvements in the Manufacture of Staples and like Fastenings.
Year: 1894

page_text: Date of Application; 30th. Oct., 1894
Complete. Specification Left. 30th July, 1895-Accepted, 31st Aug., 1895
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Staples and like Fastenings.
I, CHARLES MARCH, Managing Director of The Clyde Nail Company, (Limited),
Newton, in the County of Lanark, do hereby declare the nature of this invention
to be as follows :--
This invention relates to the manufacture of staples and other like fastenings, and
it has for its object the production of such fastenings by cutting off blanks from
strips of iron, steel or other metal of suitable section in a nail cutting or like
shearing machine and doubling or bending them in loop form either as they pass
from the cutting knives or by the direct action of the said knives.
The strips employed are rolled thicker in the middle than at the edges, that is to
say they taper, as seen in section, from the centre towards the edges where they are
made thin enough to form the points of the finished staple. Blanks are cut froin
the strip of the breadth desired between a bed knife, on which the strip rests, and
a shearing knife, a gauge being used to determine the breadth of the blank; and
as it is cut from the strip, the blank is carried down by the shearing knife and the
gauge to a pair of dies or guides between which the blank is pushed or drawn by a
bar or lever, which bears on the middle part of the blank and doubles it up
into U-shape against the sides of the dies or of grooves formed in them; the width
of the finished staple being determined by the size of opening between the dies.
In lieu of employing separate means for doubling the staple blank it may be
doubled by the action of the shearing knife, the knife in such case being made with
a U-shaped cutting edge, or having a notch or recess cut out of its middle part, so
that the knife in shearing off the blank first cuts through the thin outer edges of
the strip and presses them down or doubles them. as the cutting proceeds until by
the time the middle part of the strip is cut through the blank has been completely
doubled into a staple. Or the same result 'may be attained by using three separate
shearing knives so arranged that the two outer knives cut in advance of the middle
knife.
In making fastenings having limbs of unequal length; the blank is pressed
through the dies or doubled at a point nearer one end than the other.
Dated this 20th don of October-1801
WALLACE FAIRWEATHER,'
Chartered Patent Agent,'
;
62 St. Vincent Street, Glasgow, Agent for the Applicant.
3 Improvements in the Manufacture of Staples and like Fastenings."
I, CHARLES MARCH, Managing Director of The Clyde Nail Company (Limited),
Newton, in the County of Lanark, 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 relates to the manufacture of staples and other like fastenings,
and it has for its object the production of such fastenings by cutting off blanks from
strips of iron, steel or other metal of suitable section in a nail cutting or like.
077

page_text: shearing machine and doubling or bending them in loop form either as they pass
from the cutting knives or by the direct action of the said knives.
The accompanying drawings illustrate a nail cutting or shearing machine
adapted for the manufacture of staples or like fastenings in accordance with my
invention.
;
Figure 1 is a vertical section of the machine, Figure 2 is a plan of same
Figures 3 and 4 are detail views of the dies.
and
Figure 5 is a cross section of the strip from which the staples are formed, and
Figures 6 and 7 are views showing modifications of the cutting knives.
:
The strips A employed are rolled thicker in the middle than at the edges, that is
to say they taper, as seen in cross section at Figure 5, from the centre towards the
edges where they are made thin enough to form the points of the finished staple.
Blanks B are cut from the strip of the breadth desired between a bed knife C on
which the strip rests and a shearing knife D, a gauge being used to determine the
breadth of the blank; and as it is cut from the strip, the blank B is carried down
by the shearing knife D and the gauge to a pair of dies or guides E both of which
may be stationary as shown at Figure 4 or one of which may be capable of side
movement as shown at Figures 2 and 3, between which the blank is pushed or
drawn by a bar or lever F connected to a lever G keyed on the rocking shaft. H, a
second lever I, being secured on said shaft, whose end is connected to a link J
actuated by a crank dise K which means imparts the requisite vertical motion to
the lever F. A shoulder L is formed on the bar F which is held clear of the
blank B when said bar F is rising but is brought over the blank B by means of a
cam M, on the crank shaft N, acting on one end of a beam lever O whose other
end is secured to a connecting rod P which imparts forward movement to the bar F.
This shoulder L bears on the middle part of the blank B and doubles it up
into U-shape against the sides of the dies E or of grooves formed in them, the
width of the finished staple B' being determined by the size of opening between the
dies. A spring lever Q actuated by a cam R on the shaft N imparts motion to a
connecting rod S which in turn actuates a lever T whose end is provided with a
shoulder U for the purpose of holding the blank B in position on the dies E until
the shoulder L on the bar F begins to act on the blank B. The staple is
left between the dies E when one of the dies used is capable of side movement as
shown at Figure 3 after the bar F has been withdrawn, and in order to ensure that
the legs of the staple will remain parallel to each other after its release from the
dies a bar V on which the movable die is fixed or formed moving in a guide W on
the machine frame, is acted upon by a wedge piece X, on the cutting head Y, to
squeeze the staple sufficiently to effect this object. Or the staple is drawn
through the dies. E by the shoulder L, when two stationary dies, as shown at
Figure 4, are used.
In making fastenings having limbs of unequal length the blank is pressed through
the dies or doubled at a point nearer one end than the other.
In lieu of employing separate means for doubling the staple blank it may
be doubled by the action of the shearing knife D, the knife in such case being made
with a U-shaped cutting edge as shown at Figure 6 so that the knife in shearing
off the blank first cuts through the thin outer edges of the strip and presses them
down or doubles them as the cutting proceeds until by the time the middle part of
the strip is cut through the blank has been completely doubled into a staple.
Or the same result may be attained by using three separate shearing knives D as
shown at Figure 7 so arranged that the two outer knives cut in advance of the
middle knife.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim :-
1. The manufacture of staples or like fastenings in the manner and by means of

page_text: 2. The manufacture of staples or like fastenings by cutting blanks from a rolled
strip between a bed knife and shearing knife and subsequently pushing or drawing
the blanks between dies or guides to double them into U-shape, substantially as
described.
3. The manufacture of staples or like fastenings by cutting blanks from a rolled
strip and by the same operation of the knives bending or doubling them substantially
as described.
4. Pointed staples or like fastenings made from a strip rolled thinner at the edges
than in the middle and from which the blanks are cut and doubled.
Dated this 20th day of Lul 1805
WALLACE FAIRWEATHER,
Chartered Patent Agent,
62 St. Vincent Street, Glasgow, Agent for the Applicant.