Improvements in the Manufacture of Hoops or Buckles for Laminated Springs.
Year: 1890

page_text: Date of Application, 12th Apr., 1890
Complete Specification Left, 9th Jan., 1891-Accepted, 14th Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Hoops or Buckles for
Laminated Springs.
I, HERBERT WOODRUFF of Carr Holme, Wadsley Bridge near Sheffield in the
County of York Engineer do hereby declare the nature of this invention to be
as follows
:-
•
The lamina of railway and other similar springs are held together by a hoop or
buckle which consists of a rectangle encircling the middle of the lamina holding
them together. The two opposite sides of the rectangle are commonly produced
sometimes in one and sometimes in both directions the prolongations serving as
attachments. Such hoops have been generally manufactured in the following
manner: The two produced sides are connected at their end or ends by means of
a shaped piece of metal, the two sides of the being welded to the ends of the
sides of the rectangle. It is found however difficult to make sound welds and
the process requires great skill and occupies a considerable time each joint being
welded separately.
According this invention I hold the pieces of the hoop together whilst they are
heated and weld the whole at the same time. I preferably first forge the two longer
sides of the rectangle so as to make them thicker at their ends and I then form in
them slots at the point where they are to be jointed to the ends of the shorter sides.
The shorter sides carry lugs to fit the slots in the longer sides. The whole is then
rivetted together by hammering the ends of the lugs and the hoop so formed is
heated in a furnace and all the joints are then welded up simultaneously in any
suitable manner.
No text detected.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Hoops or Buckles for
Laminated Springs.
I, HERBERT WOODRUFF, of Carr Holme, Wadsley Bridge, near Sheffield, in the
County of York, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
The lamina of railway and other similar springs are held together by a hoop
or buckle which consists of a rectangle encircling the middle of the lamina holding
them together. The two opposite sides of the rectangle are commonly produced
sometimes in one and sometimes in both directions the prolongations serving as
attachments. Such hoops have been generally manufactured in the following
manner: The two produced sides are connected at their end or ends by means of
a shaped piece of metal, the two sides of the being welded to the ends of the
sides of the rectangle. It is found however difficult to make sound welds and the
process requires great skill and occupies a considerable time each joint being welded
separately.
According to this invention I hold the pieces of the hoop together whilst they
are heated and I weld the whole at the same time. I preferably first forge the two
longer sides of the rectangle so as to make them thicker at their ends. I form in
them slots at the point where they are to be jointed to the ends of the shorter sides.
The shorter sides carry lugs to fit the slots in the longer sides. The whole is then
rivetted together by hammering the ends of the lugs and the hoop so formed is

page_text: heated in a furnace and all the joints are then welded up simultaneously in any
suitable manner.
In order that my said invention may be fully understood and readily carried into
effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side view and Figure 2 is an edge view of one of the side pieces of
the rectangular hoop or buckle with its thickened ends or prolongations.
Figure 3 is a side view and Figure 4 is an end view of one of the end pieces of
the rectangle.
Figure 5 is a side view of the finished hoop or buckle and Figure 6 is a plan of
the same.
Figures 7 to 11 show hoops or buckles of other forms.
In Figures 1 and 2 a a are the thickened ends or prolongations of the side piece
and bare slots formed to receive lugs on the end pieces.
In Figures 3 and 4 cc are the lugs to enter the slots b. d d are projecting scarf
pieces formed upon the end pieces to ensure a sound weld.
In putting the parts together two end pieces and two side pieces are taken and
the lugs
cc on the one are inserted into the holes in the other and the lugs are
slightly rivetted to hold the parts temporarily and whilst they are heated to a
welding heat; the welds are then completed either by hand hammering or by the
aid of special tools such as are described in my Specification No. 5596 of the
year 1890.
Each end piece may have four lugs and each side piece four holes or slots as is
shown by Figure 7.
Figure 8 shews a hoop or buckle with prolongations which are not thickened.
Figure 9 is a side view of a hoop or buckle with prolongations at one end only.
Figure 10 is a plan of the hoop or buckle; it is made in two pieces as the drawing
indicates.
Figure 11 is a plan of a hoop or buckle having a solid prolongation and thus
formed on the end piece.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The manufacture of hoops or buckles as described in respect to Figures 1 to 7
from two side pieces and two end pieces; the former with thickened ends or
prolongations and with holes; and the latter with studs to enter the holes; such
parts being temporarily held together by the studs, heated and then welded up.
2. The manufacture of hoops or buckles as described in respect to Figure 8 that
is to say as claimed in the preceding claim but with side pieces the ends or
prolongations of which are not thickened.
3. The manufacture of hoops or buckles as described in respect to Figures 9 and 10
with prolongations (either thickened or otherwise) at one extremity only of the
rectangle; the parts in course of manufacture being temporarily held by studs,
heated and then welded up.
4. The manufacture of hoops or buckles as described in respect to Figure 11;
the prolongation being upon the end piece and the parts in course of manufacture
being temporarily held by studs, heated and then welded up.
Dated this 8th day of January 1891.
HERBERT WOODKUFF.