Improvements in Wheels for Bicycles, Tricycles, and other Vehicles.
Year: 1892

page_text: Date of Application, 1st Feb., 1892-Accepted, 19th Mar., 1892
COME LEIE SPECIFICATION.
Improvements in Wheels for Bicycles, Tricycles, and other
Vehicles.
1 TIMOTHY MURPHY of Number 73 and 74 Main Street Clonmel in the
County of Tipperary Ireland Agricultural Engineer 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:-
The said improvements are the combination of two wheels one being smaller than
the other. The small wheel is placed within the circumference of the large one
as per drawing Figure 1. of which "E" thereon is the rim, "B" the centre, and
"X" the spokes of the large wheel.
The said spokes "X" passes freely through slits formed at "L" in the rim "M"
of the inner wheel thereby allowing the sinall wheel a free action up and down in
the large wheel.
-O
Upon the spokes of the large wheel between the outer rim "E" of the large
wheel and the inner rin "M" of the small wheel are placed one or more spiral
springs all around at "E." Said spiral springs will sustain the weight of the inner
wheel towards the outer wheel. Said inner wheel is kept from revolving around
on the outer wheel by any desired number of spiral springs both ends of said springs
are attached, one end to the outer rim at "" and the other end to the rim of
inner wheel at "A." At "H. H" is shewn two of said springs in opposite
directions and said springs will sustain the weight of the small wheel much in the
same way as the spiral springs which are placed all around on the spokes shewn
at "E"; or spiral springs may be placed ou said spokes of the outer wheel between
the centre B" of the outer wheel and the rim "M" of the inner wheel at the
point designated by the letter "G" in which position they will sustain the weight
of the inner wheel. d" is the centre or hub of the inner wheel, "S" are the
spokes and "M" the rim. The rim, the spokes and hub of the inner wheel are in
no way connected with the spokes or centre of the outer wheel. The pin I Fig. 2.
may be hinged to the outer rim at "R" and is made to pass through slits formed"
on the springs
66 A "
at "uu" and through the rim "" of the inner wheel, in
which case said spiral springs may be placed upon said pin I at the point designated
by the letter "S" instead of being placed on the spokes "X" of the large wheel
Fig. 1. in which case said pin would be free to move in said slits, "u" of spring "A"
Fig.
"2" thereby allowing said inner wheel freedom to move on said large wheel.
Said spring or strap "A" Fig. 2 may be either fastened or hinged on at "K" to
the rim "T" of the inner wheel.
66
The spring "A" Fig. 2. may be also used jointly with the spiral springs which
are placed on the spokes of the outer wheel at "E" described in drawing Fig. 1.
and said spokes of said outer wheel may pass at one or both sides of rim "M" of
inner wheel. At "Z" Fig. 2 is shown where the head "C" of said pin "I" may
be provided with a roller designated by the letter "W" and with a guide designated
by the letter "Y." The rim "F" of the outer wheel is kept in position by the
said head "C" and by the roller placed in aid bead upon which said rim "F" is
free to slide. Said head "C" is kept in position against said rim "F" by
guide "Yupon which the said head slides. Said guide "Y" is fastened to the
F" in which case the pin I passes freely through holes in the springs "A"
นน "instead of in slits as hereinbefore described.
rim
at "
66
That as the said spokes "X" Fig. 1. acts as braces to the outer rim of the
outer wheel said rim is made very stiff and rigid thereby causing the spiral springs
placed in connection with the rim of said two wheels to yield up and down in a
very sensitive manner as the wheel rolls.

page_text: Drawing Fig. 3 is a transverse view of the head "C" of the pin "I" and the
rollers shewn at "W" and the guides shewn at "Y" all designated at "Z" Fig. 2.
The rim "F" of the outer wheel Fig. 3 is kept in position by the said head "C"
and by the rollers "W" placed in said head, upon which said rim "F" is free to
move. Said rollers "W" will roll against said rim "F." Said head "C" is kept
in position against said rim."F" by the guides "Y" as shewn in Fig: 2 and
Fig. 3.
The pin "I" is connected to the head "C" and the spiral springs are placed on
said pins "I," as shewn at Fig. 2 and 3, between said head "O" and the outer
circumference of the inner wheel.
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:-
1. The placing of one wheel within the circumference of the other the inner
wheel having a free movement within the outer wheel.
2. The placing of the spokes of the outer wheel in slits, said slits being formed
through the rim of the inner wheel described in drawing Fig. 1.
3. The placing of spiral springs upon said spokes said springs will sustain the
weight of the inner wheel towards the rim of the outer wheel as stated in drawing
Figure 1.
4. The placing of spiral springs around between said two rims of both wheels,
both ends of each spring is attached one to the inner rim and the other to the
outer rim thereby preventing said outer rim sliding or revolving around on the
inner wheel. Said spiral springs will also assist to sustain the weight of one
wheel towards the other wheel as shewn in drawing Figure 1.
5. The hanging of the pin "I" to the outer rim "F" and the forming of a
slit in spring "A" at "u" as per drawing Figure 2.
"
6. The providing of the head "C" of the pin "I" with rollers and guides as
described in drawing Figure 2.
7: That as the said spokes "X" Fig. 1. acts as braces to the outer rim of
the outer wheel said rim is made very stiff and rigid thereby causing the spiral
springs placed in connection with the rim of said two wheels to yield up and
down in a very sensitive manner as the wheel rolls.
Dated 30th January 1892.
TIMOTHY MURPHY.