IMPROVEMENTS IN APPARATUS FOR FEEDING NAIL, MACHINES
Year: 1880

page_text: LETTERS PATENT to Herbert John Haddan, of the Firm of Herbert and
Company, Solicitors of Patents, of 67, Strand, in the City of Westminster,
Civil Engineer, for an Invention of "IMPROVEMENTS IN APPARATUS FOR
FEEDING NAIL, MACHINES." A communication from abroad by William
Briggs, of the City of Montreal, in the Dominion of Canada.
COMPLETE SPECIFICATION filed by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 3rd November 1880.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer. "IMPROVEMENTS
IN APPARATUS FOR FEEDING NAIL MACHINES." A. communication from abroad
by William Briggs, of the City of Montreal, in the Dominion of Canada.
This Invention has reference, firstly, to the construction and arrangement of a
feeding apparatus so arranged in its action that the parts employed to hold the
plate from which the nails are to be cut will turn over and present the plate to
be cut, and then remain stationary a sufficient amount of time for the operation of
cutting to be fully performed, when it again turns over and acts in a similar way.
The second part of the Invention consists in the construction and arrangement of
the jaws employed for holding and guiding the said plate from which the nails
are cut.
In the Drawing hereunto annexed similar letters of reference indicate like
parts.
Figure 1 is a side elevation of a machine embodying this Invention.
Figure 2 is a plan of Fig. 1.
Figures 3, 4, 5, and 6 are details of jaws.
Figure 7 is a front view of part of the plate turning apparatus.
Letter A is any suitable frame work for holding the working parts of a nail
cutting machine, which said parts are not shown, as they form no part of the
present Invention; B are the plummer blocks for holding the main shaft; C are
the blocks to which the cutting jaw is attached, and D is the rest for holding the
bed-die for cutting the nails. All the above are constructed (and the part of them
that is shown in the Drawings) in a similar manner, as heretofore in use.
Price fid

page_text: To the front of the frame A are attached two brackets E carrying a shaft F,
which is free to revolve in the bearings G at the ends of the brackets. On the
shaft F is secured an arm H to which is attached a plate I of the form shown in
the Drawings, upon which two plummer blocks K are secured. In these a rotating
barrel L is held.
A slide is provided working on the plate I, which slide consists of three bars
and an end piece connecting them; the top bar M passes over the plate I, and is
provided with openings to engage with the projections N on the barrel L after the
manner of a rack and pinion; the bar P which passes through downward projecting
flanges on the plate I and serves for a guide, and the bar Q. I do not confine
myself to this construction of the slide, as many others may equally well answer
the purpose of causing the barrel to turn half round and back again. The back
end of the barrel L is constructed with a taper point, and although not shown in
the Drawings a mechanism is provided for feeding forward the nail plate placed in
the barrel L; this said mechanism is of similar construction to that at present in
use, and I would state that all that has been hereinbefore mentioned or partly
described is old, and similar to what has heretofore been in use.
On the side of the plummer blocks B are secured two bearings a carrying a
shaft b provided with a gear wheel c so arranged with a gear on the main shaft
carried in the blocks B that the shaft 6 makes one revolution to two revolutions
⚫ of said main shaft. On the extremity of the shaft b, as shown, a crank d is
secured; to a crank pin on said crank is attached a connecting rod e, to the other
extremity of which is attached a rack f carried in a guiding block g, so that as the
crank d revolves the rack of moves backwards and forwards.
In the guiding block g is also held a pinion (not shown in the Drawings because
it is contained within the guiding block g having axle h, which h will be understood
to include said pinion) arranged to make half a revolution at each stroke of the
rack f. To the axle h, passing up through the upper side of the block g, and upon
said axle is attached a crank i; to this crank is attached a connecting rod k
connecting with the bar Q, so that by the revolution of the crank d operating
through the medium of connecting rod e, rack f, pinion and axle h, crank i, and
connecting rod k, with slide in I, the barrel L is caused to turn over twice at each
revolution of the crank d; this may, in so far as I have now described it, be
considered very similar to what has heretofore been in use, and therefore I wish
to call particular attention to what I am now about to describe, as the gist of the
first part of this Invention is contained in it, by setting the parts d, e, f, h, i, and k
so that the crank d shall be on the "dead centre" with regard to the rack f when
the crank i is on the "dead centre" with regard to the slide M, and inasmuch as
in all the moving parts of all ordinary machines there must be an amount of slack
or "lost motion," therefore by reason of said slack or lost motion, conjointly with
the fact of setting the two cranks d and i on their dead centres at the same time,
a considerable pause in the motion of the barrel L is caused each time it turns
over, and these pauses are arranged or timed by the setting of the parts of the
machine to occur when the cutting off of the nail takes place.
The second part of this Invention consists in the construction and arrangement
of the guiding jaws, shown more fully in Figs. 3, 4, 5, and 6.
Figure 4 shows a plan of the upper inclined surface of the rear part of the
barrel L; as shown, two arms'm are attached to it by pivots n, these arms extend
forward and engage with projections 9 of the slide r.
The slide consists of a slotted link so arranged with the said projections q and
acting upon the arms m having the configuration shown, they cause the rear ends
of the arms to be adjusted in distance apart or from each other to agree with the
width of plate from which the nails are to be cut by the setting of the slider,
which is secured by means of any suitable set screw or similar device 8. As shown
in Figs. 4 and 6 (Fig. 6 is a section on line x, x, Fig. 4) the arms m are provided
with side flanges t.
On the incline situated under that upon which the arms m are situated is

page_text: secured a plate a³; the lower side of this plate is shown in plan in Fig. 3, and the
upper side in plan in Fig. 5, by which it will be seen that two projections 6' are
provided, and by looking at Fig. 6 the object of these projections becomes at once
apparent.
What I claim and wish to secure by Letters Patent is as follows:-.
1st. In combination with the barrel La rack or similar device for revolving said
barrel operated by a crank i, which is in turn operated by a crank'd, arranged to
have the dead centres of said cranks set substantially as described for the purposes
set forth.
2nd. The combination of the crank d, connecting rod e, rack f, pinion and axle h,
crank i, connecting rod k, and barrel L, substantially as and for the purposes
set forth.
3rd. The combination of the barrelj L with jaws m, constructed and arranged
substantially as described, and provided with plate a², constructed and arranged
substantially as described for the purposes set forth.
In witness whereof, I, the said Herbert John Haddan, have hereunto set my
hand and seal, this Second day of November 1880.