Improvements in, and in the Manufacture of Box-joint Pincers, Pliers, Nippers, and like Tools.
Year: 1897

page_text: Date of Application, 17th Sept., 1897
Complete Specification Left, 8th June, 1898-Accepted, 20th Aug., 1898
PROVISIONAL SPECIFICATION.
Improvements in, and in the Manufacture of Box-joint Pincers,
Pliers, Nippers, and like Tools.
I, HERBERT JOHN MARSDEN, trading as Thornhill, Bednal and Company, of
Crispin Works, Sycamore Street, Sheffield, in the County of York, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to box-joint pincers, pliers, nippers and like tools, such
for example as shoe makers pincers, button-hole cutting pliers, eyelet punch
pliers and eyelet and eyelet-hook closing pliers.
Heretofore, the head of one part of such pliers, viz., the part having the shank
passing through the box of the other part, is liable to break off at the junction,
and further, such tools, after having been in use for some time, are liable to
become loose.
The one object of the invention is an unbreakable box joint, and another
object is to provide means for restoring the original tightness to the joint after
wear.
According to my invention, form each half or each part of a pair of pincers
from two components, viz., a handle part, with languet-like straps, extending
from the forward end through the whole length of, and welded to the two opposite
sides of, the middle piece or body of the jaw, which extends inwards near to, or
up to, the joint. Thus, the pair of pincers comprises two parts or jointed levers,
forwardly terminated by the gripping jaws, one of the said parts consisting of a
handle with a pair of parallel straps or bifurcated branches extending from the
forward end and forming the sides of the jaw or head when welded to the middle
piece, whilst that part between the jaw or head and anvil is closed or brought
together, but leaving a small thoroughfare hole wherein a small taper pin, wedge
or cotter is inserted and which when driven in, expands the side walls to their
normal breadth, thereby taking up wear.
The other element or part of the tool or instrument is built up in the same
way as the first-named lever, but the parts of the languet coming at the joint are
opened out to form the sides or cheeks of the box, between which the closed
together shank part of the other lever, works upon a cross directed rivet or pin
passing through the contiguous solid parts.
In making a pair of shoe-makers pincers, a hammer piece is formed upon the
underside of the bottom jaw, having a head of the full width of the tool, but the
inner end or shank is stepped or reduced to the same breadth as the distance
between the inner faces of the languet straps.
The application of my invention to other tools and instruments differs in no
essential respect from its application to pincers for shoemakers and others as herein
described.
Dated this 16th day of Santamber 1907

page_text: Improvements in, and in the Manufacture of Box-joint Pincers,
Pliers, Nippers, and like Tools.
I, HERBERT JOHN MARSDEN, trading as Thornhill, Bednal and Company, of
Crispin Works, Sycamore Street, Sheffield, in the County of York, Manufacturer,
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 box-joint pincers, pliers, nippers and like tools, such,
for example as shoemakers pincers, button-hole cutting pliers, eyelet punch
pliers and eyelet and eyelet-hook closing pliers, and all box-joint tools.
In box jointed pliers and like tools of the ordinary construction the head of
one of the parts, viz., that having a shank passing through the box of the other
part is liable to snap or break off at its junction with its handle or stem. The
principal object of the invention is to provide an improved construction of box
joint, which is practically unbreakable.
In accordance with my invention, I propose to make or build up one or both
of the halves of a pair of box-jointed pincers, pliers or like tools, each
from two welded or rivetted together component elements, viz., a handle
part, provided at its forward end with a pair of parallel and separated side straps
or languets, or with a middle tongue or web and a jaw or part-jaw piece having
either a tongue, or a pair of straps adapted to take between, or to receive, the
straps or tongue of the handle.
Figure 1 of the accompanying drawings represents a side elevation of a pair
of box-jointed shoe-makers pincers constructed or made up in accordance with one
form of my invention, and in which the handle controlling the lower jaw of the
instrument has a pair of forwardly directed side straps or languets, which form the
side walls of the box joint, with the shank of the other handle coming between
them, whilst a tongue piece provided or formed on a separate jaw piece is intro-
duced between and welded to the front ends of the said straps, after the other
handle of the tool has been placed in position.
Figure 2 is an edge view of Figure 1.
Figures 3 and 4 represent, in side elevation and edge view, and separately, one
half of the said tool comprising the upper jaw, united to its handle by a shank or
neck which comes between the walls of the box in the other part of the tool and
through which the joint pin passes.
Figures 5 and 6 represent in side elevation and edge view, the handle portion of
the other half of the tool, showing the languets or straps at its front end, the
inner parts of which constitute the walls of the joint, whilst the forward parts
receive the tongue of the bottom jaw piece, which is represented separately and
in three different views, in Figures 7, 8 and 9.
The same letters of reference indicate corresponding parts in the said Figures 1
to 9.
is the one half of the tool and b, the other half. The part a, which may be
made as a single stamping lasting or forging, comprises the upper jaw a¹, and its
handle a³, which are connected together by a reduced neck or shank a³, pierced
with a hole at, wherethrough the joining-up pin c. of the tool passes and being only
of such a thickness as to admit of coming and fitting between the parallel straps
or languet-like side extensions b', at the forward end of the handle 62, of the other
part and to which it is jointedly connected by means of the said pin c, passing
through the holes 63, in the said straps of the one element and the hole a, in the
shank of the other element. d is the lower jaw piece, which is separately formed
and is provided with a tongue or web d¹, which is of about the same thickness
as the shank a³, and comes between and is welded to, the inner sides of the front

page_text: ends of the straps 61, thus forming the bottom jaw and completing the half b, of
the tool. In the arrangement shown the stamps abut against shoulders d³, of
the jaw piece, whilst extensions 64, on their bottom edges rest against shoulders d³,
of the hammer piece d.
In making up the pincer, the neck or shank a³, is placed in position between
the straps b, before the bottom jaw piece is welded in.
Figures 10 and 11 represent an elevation and edge view of another form of
box joint pincer, in which both halves of the tool are made up of a handle part
and a jaw piece, connected with one another by a tongue on the one element coming
between and being welded to a pair of straps or languet sides on the other
element.
Figures 12 and 13 represent an edge view and side elevation of the bottom jaw
and its handle, this half of the tool being made up in substantially the same way
as specified in connection with the preceding arrangement.
Figures 14 and 15 represent an elevation and edge view of the handle of the
other half of the tool, which has a tongue proceeding from its end, a portion of
which constitutes the shank or neck of the joint and comes between the walls of the
box part, whilst the other and foremost portion comes between and is welded to a
pair of side straps of a separately formed top jaw piece, which is represented in
three different views by Figures 16, 17 and 18.
a is the one half of this tool and b the other half, the latter being preferably
of the same construction as described in connection with Figures 1 to 9, whilst the
former consists of a handle a³, terminating forwardly in a tongue a³, whose root
constitutes the neck or shank a³, and comes between the side walls b1, of the box
in the half b, to which it is jointed by means of the pin c, passed through coin-
ciding holes 63, at, in the side straps and shank respectively. The other portion
of the said tongue is (after the neck has been pivoted in position) placed in
the gap as, coming between side straps as, of a separately formed upper jaw
piece a¹, and after these engaging parts have been welded together the assembling
of the elements of tool is completed.
Figures 19 and 20 represent an elevation and an edge view of another form of
tool having built up jaws and box joint made in accordance with another form of
my invention.
Figures 21 and 22 represent elevation (with one of the side straps broken away).
and edge view of the one handle b, having at its forward end, straps or parallel.
side extensions 61, which both form the walls for the box joint and side portions of
a built-up combined bottom jaw and hammer b².
a
Figures 23 represents an elevation, and back and front edge views of
separately formed element or plate 63, which is placed between the straps.b¹, on
the said handle b, and is welded or rivetted thereto to complete the combined bottom
jaw and hammer b³.
Figures 24 and 25 represent an elevation and edge view respectively of the
other handle a, which has the shank piece a³, and tongue a5, at its-fore end, which
latter is placed between side straps a6, of a separately-made top jaw piece a¹,
(represented in Figures 26 and 27) and welded thereto, thus completing the second
part of the tool comprising the top iaw, shank and handle.
In making up this form of tool, I may complete the making of the part b, first,
and then introduce the tongue a5, between the walls of the box formed by the
straps 61, and the shank a³, may next be pivoted to the said walls by a cross pin ct,
after which the straps af, of top jaw piece a¹, are welded or rivetted to the
tongue 5, when the assembling of the elements of the tool is completed.
Instead of making up the lower jaw as described, the handle may have a
tongue extension of the same configuration as the bottom jaw, to which like-
shaped side plates are welded or rivetted, this modification being also applicable
to top jaws.
Figures 28 and 29 represent an elevation and edge view of a modification of my
invention, in which one of the sides of the box joint is made separately.

page_text: Figures 30 and 31 represent an elevation and edge view of the lower jaw part
of the tool, which has the box part of the joint formed within it, and to which the
separately formed side plate is welded or rivetted after the two handle parts have
been placed together (as in Figure 35).
Figures 32 and 33 represent an elevation and edge view of the top jaw part
and
Figure 34 represents an elevation and edge view of the separately formed side
plate.
In these Figures 28 to 34, a is the one part, which may either be built up as
previously described, or be formed in one integral piece, and comprising the upper
jaw a¹, handle a², and shank a³, and b is the other part of the tool, comprising
the combined lower jaw and hammer and handle 3, the latter being connected
to the former by a side plate or languet 62, whilst 64, is the recess or clearance which
constitutes the box of the joint and wherein the shank a³, of the part a, is placed
and then secured there by welding or rivetting in the ends of the side plate 65,
to the ledges 68, made to receive it. A pin c, passed through the coincident holes
in the side plates, completes the making up of the tool.
I wish it to be understood that I do not confine myself to any particular method
of producing the component elements of the various constructions of tools herein
described, as instead of stamping or forging or lasting the combined handles and
tongues, or handles and side straps from solid metal they may equally well,
especially where light tools are required be fashioned from sheet metal blanks the
body parts of which are bent into a trough section to constitute the handles,
whilst suitable extensions thereof are either closed together to form the middle
tongue and shank, or placed parallel with one another to form the side straps.
according to requirements. The jaws or part jaw pieces or combined jaw and
hammer pieces may either be stamped or forged or lasted in the solid or built up
of a number of welded together parts stamped of sheet metat of suitable thickness.
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 is
First In box-jointed pincers, pliers and analogous tools, making either of
the halves of the same from two rivetted or welded together component parts, viz., a
handle part having a pair of separated side straps at its forward end, and a
jaw or part jaw piece provided with a tongue or web adapted to come and be
welded or rivetted between the said straps of the handle.
Secondly: In box-jointed pincers, pliers and analogous tools, making either
of the halves of the same from two rivetted or welded-together component parts,
viz., a handle part having a tongue or web at its forward end, and a jaw piece
provided with a pair of side straps which receive the tongue of the handle, which
half of the tool is adapted to be used in conjunction with another half of a
construction such as referred to in the first claim.
Thirdly: In box-jointed pincers, pliers and analogous tools, making up either
or both of the halves of the same by rivetting or welding separately formed
pieces, of the same configuration as the jaws to be made, between languets or straps
or to tongues formed at the ends of the handle parts, substantially as described
and set forth in Figures 19, 20 and 23.
Fourthly: The modified construction of box-jointed pincer or analogous tool as
described and set forth in Figures.28 to 34.
HERBERT JOHN MARSDEN.
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicant.