Improvements in Sectional or Jointed Horseshoes.
Year: 1888

page_text: COMPLETE SPECIFICATION.
Improvements in Sectional or Jointed Horseshoes.
WC, JOHN ERNEST BINGHAM of Walla-Walla in the Territory of Washington,
United States of America, Surgeon, and EDWARD WINGARD BINGHAM of Portland,
in the State of Oregon, United States of America, Attorney at Law, do hereby declare
the nature of this invention and in what manner the same is to be performed, to he
particularly described and ascertained in and by the following statement :-
This invention relates especially to that class of Sectional Horseshoes which are
constructed in manner substantially as described in Her Majesty's Letters Patent
No. 10,884 of 1887,-by assembling and uniting for each shoe suitable toe and heel
parts selected from a number of interchangeable sections severally formed of varying
dimensions and curvatures, so as to fit therewith any size or shape of hoof to be
shod, although it may be adapted to all forms of sectional or jointed horseshoes.
The object of said invention is to simplify and perfect the lock-joint between the
toe and heel sections of the shoe and to combine with such a joint means whereby
a nail may be passed directly through the joint to secure the shoe to the hoof at
that point and thereby permit such regular intervals to be preserved between the
nails on each side of the foot as have been found by experience to be most useful in
properly fastening the shoe.
The invention consists in the combination, substantially as hereinafter described,
with the toe and heel sections of the shoe, of a tongue upon the end of one section
adapted to fit a counterpart recess in the end of the other section and form a lap-
joint therewith, a stud or pivot projecting from one face of the joint to enter an
aperture in the opposite face, and a lateral flange formed upon the tongue to enter
and interlock with a counterpart lateral groove in the wall of the recess which
receives it, thereby converting the lap-joint into a rule-joint in which the pin will
operate to prevent the two leaves or divisions of the joint from sliding apart one
upon the other, and the lateral interlocking-flange will prevent said divisions from
being lifted apart one from the other. The invention consists furthermore in the
combination with the two parts of a lap-joint in a sectional horseshoe, of a transverse
pivotal stud or pin having a nail hole pierced through it, as herein described
and illustrated in the drawings.

page_text: In the accompanying drawings
Figure 1, is a plan view of the ground side of our improved sectional horseshoe
with one of its sections detached.
Figure 2, a plan view of the opposite or hoof side of the two separated ends of the
shoe shown in Figure 1.
Figure 3, a transverse section in line x-x of Figure 1.
Figure 4, a similar section in line y-y of said Figure 1.
Figure 5, a view in perspective of the detached heel-section and of the opposite
end of the toe-section, with the grooved side uppermost, illustrating more clearly
the form of the rule-joint by which they are united.
Figure 6, a view in perspective of the ground side of the complete shoe, having
its sections united by our improved joint in which a nail hole is pierced through its
pivotal stud.
:
Figure 7, shows in perspective the same side of the toe-section of the shoe Figure 6,
with one of the heel-sections, at the right,-turned outwardly in position for detach-
ment from the toe-section, and the other, wholly detached, a duplicate of said
detached section being shown below it, reversed to show its under face.
Figure 8, is a plan view of the ground-side of the shoe having perforated studs in
its joints, illustrating the construction of the joint when the stud projects from the
toc-section instead of from the heel-section as illustrated in Figure 6.
Figure 9, being a transverse section in line a-a, of Figure S, and,
Figure 10, a view in perspective of the end of the detached heel-section and of
the counterpart end of the toe-section, with the heel-section swung around in position
to enter its seat in the toe-section.
Figure 11, is a transverse section similar to that in Figure 9, but illustrating a
modification in the form of the joint.
Similar letters indicate like parts in all of the Figures.
Referring to the accompanying drawings :-
A, represents therein the toe-section, and B, B¹, the heel-sections of our improved
horseshoe.
One end, D, of each beel-section is fitted to overlap the appropriate end C of the
toc-section, the overlapping portions being each recessed so as to receive the thickness
of the other, and thereby avoid any increase of the thickness of the shoe at the joint.
The overlapping ends C, D, are secured and prevented from sliding apart by means of
a transverse pin or stud E, which may be secured to, or made integral with, either
section to pass through an aperture or a circular recess E in the other. This pin E,
is preferably placed near to the outer edge of the shoe, and the shoulders f, g,-see
Figures 1, 2, 4, and 10,-forming the inner walls of the recesses in the overlapping
ends, are severally made to describe an are having the axis of the pin E or its
counterpart aperture E as its centre. The radius of the arc by which the
shoulders, g, are severally defined, is made smaller than the width of the section,
and at the inner end of each are an offset is formed in the wall upon a radial line, as
ath, h³ in the drawings.
Whero the recess for the lap-joint is made with but a single curved wall, as in
Figures 6, 8, and 10, the radial offsets h, h³, therefrom; extend out directly to the
edge of the shoe. But instead of bounding the recesses or recess for the lap-joint
on both sections, with a single curved shoulder or wall at the inner end thereof, the
inner wall for the recess Cupon the toe-section may be formed with two curved
portions f -see Figures 1 and 5,-having arcs of different radii struck from the
same pivotal centre at E.; the first, , being connected with the second f¹, by a
radial offset ', and the second continued to the edge of the shoe by a simple
radial offset h.
The ends of the two sections A, B, are made to form, each an exact counterpart
of the wall of the recess against which they are fitted, the end C of the toe-section A,
being made to terminate in a curve having the pivot-pin E as a centre corre-
sponding to the curve g of the recess in the hoof-side of the heel-section B, as shown
in Figure 2, and with an offset i corresponding to the offseth, on said section; and.

page_text: the end D of the heel-section B beinġ made with two curves of different radii struck
from the common centre of the pivot-hole E therein, said curves corresponding with
the opposite curves of the recess C, on the ground side of the toe-section A, as
shown in Figures 1 and 5,-and with the offsets h³ ³, corresponding to the
offsetts h, on said toe-section.
When the two ends C, D, are superimposed and pivoted upon the pin E, the radial
offsets hand h³, h' and h², all simultaneously abut when the heel-section is swung
around upon the pivot-pin to produce a proper shape of the shoe, as shown at the
left hand in Figure 1.
.
The overlapping-joint, formed as above described, is completed for the purposes of
our invention, and one division is prevented from being lifted off of the other
division of the joint, by the formation of curved tongues m, m, in the curved wall
of the end of the one section, to enter counterpart grooves n, n, in the wall of the
recess in the end of the other section.
To unite the two parts of the joint, the end of the tongue m must be entered into
the open end of the groove n and the part or end D be turned about the stud E as
a pivot, and the two sections united by said joint, can only be separated by turning
the heel-section B out from the toe-section A at about a right angle therewith, as
shown in Figures 5, 7 and 10.
When the heel-section is thus swung out laterally, the tongues m, m, are in a
position not to interfere with the walls, and the two ends CD may then be
readily superimposed, the pivot-pin E being passed through the aperture E¹, so as
to bring the faces of said ends in contact and the ends of the tongues m, in register
with the ends of the grooves n. The heel-section may now be swung around upon
the pin E so as to cause the tongues m, to enter the grooves n, whereupon the two
divisions of the joint become firmly locked so as to be inseparable so long as the
sections are in position to be fitted, or are fitted upon the horse's foot. The entire
shoe is rendered rigid and unyielding with regard to twisting strains by the
tongues m and grooves n as if made in one piece, the longitudinal separation of the
parts being prevented and the joint measurably reinforced by the pin E.
The tongues m, m, and grooves n, n, are preferably formed quite close to the inner
or hoof-face of the shoe, so that the shoe may be worn nearly through without
weakening the rule-joint formed thereby.
The formation of an overlapping joint with double curved walls ff, having arcs
of different radii, as shown in Figures 1 and 5, affords the advantage of the wide
bearing obtained in the wide surface of the arc of greater radius, without interfering
with the proper location of the proximate nail holes, which would be intersected by
the ends of the sections were they formed throughout upon the arc f¹ of greater
radius.
It is evident that the arrangement of the parts of the joint may be reversed at
pleasure and that the pivotal stud E therein may project from the heel-section into
an aperture in the toe-section, and this modification is illustrated in Figures .6
and 7.
Also that the toe-section may lap the heel-section, and lateral tongues be formed
in the end of the toe-section A, to enter grooves in the heel-section B, instead of the
reverse as described above.
By preference, the cylindrical pin or stud E which forms a pivot in the joint
between the toe and heel sections, is made of a diameter large enough to permit of
the formation of a nail-hole W, through it, as shown in Figures C to 11, so that the
two divisions of the joint may be secured to the foot and the normal interval between
the several nail-holes on each side of the shoe be maintained as in a solid shoe, with
manifest advantage.
In this case, it is advantageous to remove the stud into close proximity to the outer
edge of the shoe, as shown in Figures 6, 7, 8, and 10, so that the nail passed through
it shall properly enter the shell of the hoof. The aperture in which the stud is fitted
to complete the joint may, in such case, be intersected and cut open in part by the
edge of the shoe, as shown in Figures 8 and 10.

page_text: By making the overlapping part D on that face of the shoe which is to bear upon
the ground, of a thickness exceeding one half that of the shoe, the shoe may be
worn down at the joint to an extreme thinness without affecting the strength of the
joint.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :
1. The combination with the overlapping ends of the toe and heel-sections of a
sectional horseshoe, and with a transverse pin uniting the two, of a tongue m, upon
the one section entering a groove n, in the opposite section to form a rule-joint
having the pin as its pivotal centre, said tongue being disposed to engage its groove
when the two sections are in normal position and to be released only when the
sections are swung out at about a right angle with each other, all substantially in the
manner and for the purpose herein set forth.
2. The combination with the overlapping ends of the toe and heel-sections of a
sectional horseshoe, of a transverse pin uniting the two, and a tongue m, upon the
one section entering a groove n, in the opposite section to form a rule-joint having
the pin as its pivotal centre, said tongue being disposed to engage its groove when
the two sections are in normal position and to be released only when the sections are
swung out at about a right angle with each other, and said pin being pierced with a
nail-hole through it, all substantially in the manner and for the purpose herein set
forth.
3. The combination with the overlapping ends of the toe and heel-section of a
sectional horseshoe having a transverse pivot-pin uniting the two, and a terminal
segmental tongue m upon the one section describing an are having the pivot-pin as
its centre and adapted to enter a groove n in the opposite section, of a second,
terminal, segmental tongue formed upon the same section as the first, to enter a
counterpart groove in the opposite section, but describing an arc of greater radius
having the same pivot-pin as its centro, to form a double rule-joint, substantially in
the manner and for the purpose herein set forth.
4. The combination with a pivoted joint uniting the separable sections of a sectional
horseshoe of a cylindrical stud having a nail-hole pierced through it and serving as
the pivot for the joint, substantially in the manner and for the purpose herein set
fortli.
That this Twantinth love of Amil 1888