Improvements in the Construction of Cycle and other Pedals
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Construction of Cycle and other Pedals,
I, THOMAS BOURNE, Cycle Accessories Manufacturer, residing at 361, Rotten
Park Road, in the City of Birmingham, do hereby declare the nature of this
invention to be as follows:-
This invention pertains to cycle and other pedals, and consists in certain
improvements in their construction having for their object great strength com-
bined with lightness, an increased number of treads, which lengthens the life
of the rubbers, and a reduction in the amount of rubber constituting the said
treads.
The pedal according to this invention is built upon triangular lines, that is
to say, it has three distinct treads, and to each tread an independent pair of
stop-wings or horns to prevent the foot's displacement therefrom. The tread bars
are simply three longitudinal rods connecting the ends of the plates together,
the said rods being sheathed with rubber tubes and either angular or round in
cross section.
The end plates of the pedal, which can be made from thin sheet metal by
reason of the pedal's triangular construction, are alike, and each are fashioned as
follows: The central part is suitably bossed-up and shaped to the design of
the anti-friction bearing to be used for the spindle, and three projecting ears,
radiating from the centre and comprising the points of a triangle around the
centre of the plate, are formed from the metal of its extremity, the said ears
constituting parts for the coupling-up tread rods, holes being formed within
the said ears to receive one of the ends of the said rods. The metal of the side
plate between the ears, as aforesaid, is shaped into three tongue pieces, which are
curved outwardly from the inside of the plate and upwardly to form stop-wings
or horns to the displacement of the foot from the pedal's tread, each wing coming
centrally opposite a tread and being pierced within its middle to reduce the end
plate's weight.
Two of such plates are connected up, through small screwed nuts, by the
tread rods hereinbefore referred to, and as each of the side plates are stayed by
them at three points in its circumference it is obvious that a much stronger
pedal is produced with the same strength of metal if two treads were only em-
ployed as ordinarily.
As a modification the number of tread rods may be increased to four or five,
which will increase to a like number the treads in the pedal, to do which it is
only necessary to construct the side plates with a similar number of ears and
wings upon them.
It will be seen that in such a pedal it is much easier for a rider of a cycle to
"catch the pedals" than with the ordinary treads only.
100%

page_text: Improvements in the Construction of Cycle and other Pedals.
I, THOMAS BOURNE, Cycle Accessories Manufacturer, residing at 361, Rotten
Park Road, in the City of Birmingham, 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 pertains to cycle and similar pedals and consists in certain
improvements in their construction which have for their object, first, great
strength combined with lightness, secondly, an increased number of treads, which
lengthens the life of the rubbers or rat trap edges and enables the pedal to be
much more easily "found" by a rider, and, thirdly, in the case of rubber pedals,
a facility for reducing the amount of rubber which is necessary to constitute
the treads.
In the accompanying sheet of drawings the invention is shown in connection
with two forms of pedals viz.:-rubber, and rat-trap. In the said sheet,
Figs. 1, 2, 3, 4, and set forth respectively an end elevation, a longitudinal
plan, a transverse section, a view of the parts of the pedal separated, and an
elevation of one of the end plates, of a pedal with rubber treads, whilst Fig. 6
shows a longitudinal elevation of a pedal with rat-trap treads.
In describing this invention in connection with Figs. 1 to 5, the pedal a is
primarily built up upon triangular lines: that is to say, it has three distinct
treads formed by the combination of bars c, 2, and 3, which are sheathed with
rubbers d, d, and ³. These bars c, c², c³, are simply three longitudinally dis-
posed rods connecting the pedal's end plates, their cross sectional figure being
either round as shown, or angular. Each tread is provided with a pair of stop
wings or horns e, e³, e³, to prevent the foots displacement therefrom; the same
being formed as parts of the pedals end plates which are for the most part alike
in construction and fashioned from sheet metal. The construction of each end
plate is as follows:-A central part g2 of a suitable sized plate 9 is bored up and
shaped to the design to be used for the pedal's spindle and hub, between which
the anti-friction bearings are formed in the ordinary way, and three projecting
ears h, h², and h³, radiating from the centre and comprising the points of a triangle
around the centre of the plate, are formed from the metal of the plate's extremity,
the said ears, which have piercings within them, constituting parts for the
engagement of the screwed ends of the coupling-up tread rods c, c², c³. The metal
of the side plates between the ears as aforesaid is shaped into three tongue
pieces which are curved outwardly and upwardly from the inside face of the
plate g to form the stop wings or horns e, e³, e³, before referred to, to prevent
the displacement of the foot from the pedals tread; each wing or horn coming
centrally opposite a tread of the pedal, and equi-distant between the projecting
ears h h h³.
Two of such end plates as shown in Fig. 5 are connected up onto the pedals
hub or barrel o by the tread rods c, c², c³: small screw nuts n engaging the screwed
ends of the said rods. This connected up position is shown in Fig. 2. The
rubber sheathings d, d², d³, are slipped onto the rods c, c², c³, before the pair of
end plates are connected up by the said rods.
From Figs. 12 and 3 it will be clearly seen that each end plate is stayed at
three points in its circumference, and that the stop wings or horns come in pairs
central to each tread; and it will be no doubt obvious that a much stronger pedal,
consistent with lightness of metal, is the result than in pedals with two treads
only.

page_text: The end plates are coupled up against the heads o³ of the pedals hub or barrel
as abutments, and they fit the said heads a good fit.
In Fig. 6 the tread bars c, c², c³, are formed rat-trap instead of rubber, but
the end plates, which are coupled up thereby, other than in the case of the
piercings i, are identical in construction to the one shown in Fig. 5.
If a pedal with five treads is constructed, the end plates will require to have
formed upon them five equi-distant ears and five stop wings or horns intermediate
of them, but otherwise the construction is the same.
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. A cycle or like pedal having three or more treads, and whose end plates
are formed with stop wings or horns, and ears, intermediate of each other, the
said plates being adapted to be connected up to the pedal's hub or barrel, by
longitudinal tread rods or their equivalents taking through piercings in the said
cars, so that the horns and ears come opposite, and which stay them at various
points in their surfaces so that the pedal is rendered very strong, substantially
as described and set forth..
W. P. THOMPSON & Co.,
11, Burlington Chambers, New Street, Birmingham,
Also of Liverpool, London and Manchester,
Patent Agents for the Applicant.
0
W. P. THOMPSON & Co.,
11, Burlington Chambers, New Street, Birmingham,
Also of Liverpool, London and Manchester,
Patent Agents for the Applicant.