An Improvement in Machinery for the Manufacture of Horse Shoes.
Year: 1891

page_text: Date of Application, 11th June, 1891-Accepted, 11th July, 1891
COMPLETE SPECIFICATION.
An Improvement in Machinery for the Manufacture of Horse Shoes.
I, WILLIAM TURNER, of 33 Newcastle Street, Cubitt Town, in the County of
Middlesex, Farrier, do hereby declare the nature of the said invention and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement, reference being had to the accompanying sheet of
drawings and to the letters and figures marked thereon that is to say: --
This invention relates to an improvement in machinery for bending bar blanks
of metal into horse shoe form, and more especially to that kind of machine described
in the Specification of Letters Patent of the United Kingdom granted to William
Robert Lake as a communication from abroad by the Rhode Island Horse-shoe
Company, of Rhode Island, United States of America bearing date the 23rd day of
December 1873, No. 4210.
Figure 1 of the drawings is a plan view of so much of a swaging and bending
machine of the kind above referred to as is necessary to enable my present invention
and its application to such a machine to be clearly understood.
G is the upper part or platform of the frame of the machine.. C is a spur wheel
by which rotary motion is imparted to the crank shaft D which carries the
eccentrics E E¹. F F are two swages arranged to slide to and fro in suitable
guides on the platform G. They are operated respectively by the eccentrics E
and E to which they are connected by the eccentric rods E2 E³, and they act in
combination with the fixed but adjustable blocks H H clamped to the platform G
to swage the bar blank for the shoe which has been previously cut to the right
length, creased, and placed in position in the machine in readiness to be operated
upon. When the swages F F have done their work they retire and the sliding
pattern block and bender I advances, being attached to a bar K which is caused to
slide to and fro in suitable guides on the platform G by means of a connecting
rod D' which takes on to the crank D. The sliding bar K also carries a transverse
bar L furnished with inclined faces a a which latter, during the forward movement
of such bar, impinge against friction rollers b on the ends of the levers M M¹ and
cause such levers to move on their fulcra e c¹ whereby their opposite ends, which
are furnished with pins N2 N³ carrying rollers, are made to approach each other
and the said rollers act to complete the bending of the bar at the heels close to the
pattern block I in the manner well understood."
The above is a general description of the swaging and bending machine forming
part of the subject matter of the aforesaid Patent No. 4210 of 1873 and as hereto-
fore constructed and used. It is found however that when making horse shoes
which are required to have certain parts of heavier section than others, the
apparatus above described does not effect the bending in a satisfactory manner, and
the object of my present invention is to provide means whereby the bending of the
bar blank to the proper curve at all parts, whatever may be the section of such
parts, can be effected without difficulty. For this purpose I add to the machine
above described a supplementary clamping and bending device of the following
character. P P¹ are two curved bars forming the jaws of a clamp. The front
ends of these bars are hinged together at Q and their rear ends take over the
pins N2 N3 on the front ends of the levers M M' after the rollers have been
removed from such pins. The curved bars P P₁ thus form a clamp which is
opened and closed by the action of the levers M M¹. In Figure 1 of the drawings
the clamp is shown in its open position by the full lines, and pushed so far forward
as to admit of the insertion of the red hot bar blank between the blocks H H' and
the swages F F and in front of the pattern block I. While the latter is being moved
forward into the position shown in dotted lines in Figure 1, so as to bend the bar

page_text: blank into a U shape, the bar I. acts upon the rear ends of the levers M M', and
the front ends of the latter are moved inwards, this closes the jaws P P somewhat
closer together and draws them somewhat backwards as shown in dotted lines in
Figure 1 so as to bend the heel parts of the shoe round the back of the pattern
block I and to press the shoe round its entire circumference between their internal
surfaces and the outer surface of the pattern block, thereby squeezing it accurately
to shape at all parts, however irregular those parts may be in thickness.
Figure 2 is an end view of the clamp looking from left to right in Figure 1, and
Figure 3 is a sectional elevation of same on line X X of Figure 1.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what
I claim is
In a horse-shoe bending machine, the use in combination with a pattern block or
bender I of a bending and forming clamp P P1, operating substantially as herein-
before described, and illustrated in the drawings.
W. TURNER.
Per W. H. Beck,
115, Cannon Street, London, E.C., Agent.