IMPROVEMENTS IN IMPLEMENTS FOR CUTTING, GRIPPING, PUNCHING, AND SIMILAR PURPOSES
Year: 1873

page_text: LETTERS PATENT to George Haseltine, of the "International Patent
Office," Southampton Buildings, London, Doctor of Laws, for the
Invention of "IMPROVEMENTS IN IMPLEMENTS FOR CUTTING, GRIPPING,
PUNCHING, AND SIMILAR PURPOSES."-A communication from abroad by
James Lindsay, of the City and State of New York, United States
of America.
COMPLETE SPECIFICATION filed by the said George Haseltine at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 13th December 1873, pursuant to the 9th Section
of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
HASELTINE, of the "International Patent Office," Southampton
-
Buildings, London, Doctor of Laws, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS IN
IMPLEMENTS FOR CUTTING, GRIPPING, PUNCHING, AND SIMILAR PURPOSES," and have
petitioned Her Majesty to grant unto me, my executors, administrators,
and assigns, Her Royal Letters Patent for the same, and have made
solemn Declaration that it has been communicated to me from abroad

page_text: by James Lindsay, of the City and State of New York, United States of
America.
NOW KNOW YE, that I, the said George Haseltine, do hereby declare
that the following Complete Specification, under my hand and seal, fully
describes and ascertains the nature of the said Invention, and in what
manner the same is to be performed in and by the following statement,
reference being had to the accompanying Drawings forming a part of
this Specification :-
These improved implements for cutting, gripping, and punching in
the various operations of workshop practice, and for analagous uses have 1
their working jaw or jaws pivoted and operated by means of a toggle
joint actuated by a lever or levers formed with and upon one or both of
the toggles. By this contrivance an extremely powerful action of the
jaw or jaws is secured.
The said Invention is equally applicable to tools for comparatively 1
heavy work, and therefore requiring a fixed base or support, and to
those capable of being held and manipulated by the hand of the workman
for lighter operations.

page_text: provided the pivot a¹ of a movable jaw B; the shank B¹ of the latter
projects back from the pivot a', and has pivoted to it an elbow lever C,
the short arm of which constitutes one toggle of a toggle joint, whose
other toggle is constituted by a link c; the latter is pivoted at one end
to the toggle b, and at the other in a suitable bearing c¹ in the bed
plate A. By depressing the long arm of the elbow lever C the toggle
joint b, c, will be straightened, thereby lifting the shank B' of the jaw B,
and depressing the jaw itself with great power. When the apparatus is
to be used for punching purposes the jaw B should be furnished with a
punch f, immediately below which upon the bed plate should be provided
a suitable die g, as in Figure 1. When for severing rods and the like
the jaw B should be formed with a transverse cutting edge h, acting in
conjunction with a similar cutting edge i, appropriately fixed upon the
bed plate, as in Figure 2. When for shearing thin metal, as for example
sheet tin, the jaw B should be constituted by a shear blade working past
the edge of a like blade m fixed in suitable proximity upon the bed
plate, as in Figure 3; and when for shearing metallic plates of greater
thickness the jaw and the fixed blade below, acting in a manner anala-
gous to that indicated in Figure 3, as just described, should have their
cutting edges at only a slight angle, as represented in Figure 5. The
upward movement of the jaw B is of course effected by a reverse or
upward movement of the long arm of the elbow lever C.
When desired the bed plate may be replaced by a bar having its end
portion opposite the elbow lever shaped to be conveniently grasped
by the hand. Thus modified, and made of comparately small size, the
implement may be grasped and managed by the hand of the operator in
substantially the same manner as when the said Invention is embodied
in the other forms herein-after fully set forth.
Two jaws B and B* are pivoted together by the pivot a¹ and to the
shank B¹ of each jaw is pivoted an elbow lever C, the two short arms
of which are pivoted together by a pivot e¹, thereby constituting the
toggle joint. By grasping the long arms of the elbow levers, which form
the handles of the implement in the hand, and bringing them towards
each other, the toggle joint is straightened, and the shanks B' being
spread apart the jaws are caused to approach each other with very great
force to perform the work required of them. The position of the parts
when the jaws are closed together is shewn in Figures 6, 9, 10, 11, and
12, and their position when the jaws are opened in Figures 7 and 8,

page_text: When the tool is to be used for cutting sheet tin or similar thin
material the jaws B, B*, should be constituted by shear blades, as repre-
sented in Figure 6; when for cracking nuts the jaws should be formed
for gripping and holding, and of the proper shape and proportions to
receive the nuts, as shown in Figure 7; when for severing wire, rods,
bolts, and the like, the jaws should be formed with transverse cutting
edges, as indicated in Figures 8 and 9; when for punching, one of the
jaws should be furnished with a punch, and the other with a die, as
represented in Figure 10; when for simply griping the jaws may be
made with their inner surfaces parallel, as shown in Figure 11; and
when for use as pipe tongs the jaws should be recessed transversely on
their inner surfaces, as indicated in Figure 12, the recessed surfaces
being roughened or serrated to enable the jaws to take firm hold of the
pipe when forcibly clamped thereon to turn or hold the same.
Having thus fully described the said Invention, as communicated to
me by my foreign correspondent, and the manner of performing the
same, I wish it understood that I claim,-
First. The combination of the bed plate A or bar, the jaw B con-
structed with the shank B', and pivoted to the bed plate by the pivot a¹,
the elbow lever C, and the link c, as herein set forth.
Second. The combination with the jaws B, B*, formed with shanks B¹,
and pivoted together by the pivot a¹ of the two elbow levers actuating
the jaws through the agency of the toggle joint provided by the short
arms of the said levers, as herein set forth.
In witness whereof, I, the said George Haseltine, have hereunto
set my hand and seal, this Thirteenth day of December, in the
year of our Lord One thousand eight hundred and seventy-
three.
Witness,
HENRY J. NOONE,
8, Southampton Buildings,
London.
GEORGE HASELTINE. (L.S.)