Improvements in the. Manufacture of Cranks for Cycles, and other Pedal Driven Vehicles:
Year: 1896

page_text: Date of Application, 4th Nov., 1896:
Complete Specification Left, 4th Aug., 1897-Accepted; 2nd Oct., 1897
Improvements in the. Manufacture of Cranks for Cycles, and other
Pedal Driven Vehicles:
I, RICHARD FELLOWS of Victoria Street, West Bromwich, in the County of Stafford,
Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in the manufacture of cranks for cycles and
other pedal driven.vehicles.
My invention, consists in the production of., such, cranks from a long, solid bar of
suitable, metal, preferably of a rectangular, section, by means of a rolling process or
processes, which fashion the said bar. into bossed, and armed portions constituting,.
when separated, driving cranks in the rough.
The series of rollers by which cranks according to my invention are produced are
mounted in holsters and driven slowly by a suitable gearing, and the peripheries of,
the same are fitted in their entirety with dies.or tools made adjustable, and designed
for the different, passes of the metal. The first pair of rollers operate upon alternate
portions of the rectangular-sectioned metal bar, flattening and extending them into
armed parts spaced by bulbous portions left intact for the purpose of constituting
bosses to the cranks. The pass through the next pair of rollers extends the armed
parts of the bar, and fashions the metal at the enlarged or bulbous portions into boss-
shaped crank parts, and, by a further pass, if necessary, shaped to meet requirements.
These rough crank parts can then be bored and finished off in the ordinary manner.
The number of passes the metal bar, makes between the rollers are not limited so long
as the result is a length of metal comprehending, in its entirety, a number of crank
parts in their rough state.
The bar of metal used would, of preference, be steel, and the shaping accomplished..
when the said bar is in a heated condition....
W. P. THOMPSON & Co., .
Of 11, Burlington Chambers, New Street, Birmingham,
Agents for the Applicant.
COMPLETE SPECIFICATION.
0 Improvements in the Manufacture of Cranks for Cycles, and other
Pedal Driven Vehicles.
I, RICHARD FELLOWS of Victoria Street, West Bromwich, in the County of Stafford,
Mechanical 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
5 in and by the following statement :-
This invention relates to improvements in the manufacture of cranks for cycles and
other pedal driven vehicles, and consists in the production of such cranks from a long
ח'

page_text: solid bar of suitable metal, preferably of a rectangular section, by means of rolling
processes or a rolling process, which fashion the said bar into bossed and arm parts
constituting, when separated, driving cranks in the rough.
The rolls by which cranks according to this invention are produced have grooved
peripheries corresponding to the shapes required to be rolled upon the inetal bar, and
if different passes are required for gradual shaping each periphery of the series of rolls
will be grooved in advance, as required.
In the accompanying sheet of drawings the invention is illustrated, a side and edge
view of a bar of metal from which the cranks, as aforesaid, are shaped being shown in
Figs. 1 and 2. This bar, which is marked a, is fed between a pair of rolls and shaped
into the figure shown in Figs. 3 and 4; the accomplishment of which is preferably by
a single pass and when in a heated state. It will be observed from Fig. 4 that the
thickness of the bar, by the aforesaid pass, is not disturbed, but only its breadth, and
the latter only at points to form the arm a², the pedal pin connection boss as, and its
clamping lugs a. The crank bosses as are the breadth of the bar a, but their edges a
are rounded. Thus we have a bar comprehending in its length a number of cranks
in a rough condition, but of short length and incomplete.
By a saw or its equivalent the bar, Figs. 3 and 4, is divided up, on the dotted lines,
into a number of short length rough crank rollings, similar to the one shown by Figs. 5
and 6. The parts a², a³ and at of each of these cut off cranks are then lengthened out,
by an additional rolling or stamping process, into full length cranks Figs. 7
and 8 and also in dotted lines in Fig. 6, it being understood that the full length
cranks in the rough have no holes or slottings as shown in Figs. 7 and 8, and that
they are a little larger all over to allow for machining. These rough full length
cranks are then bored and finished off.
The number of passes the metallic bar makes between the rolls is not limited so
long as the result is a length of metal comprehending, in its entirety, a number of
crank parts in their rough state capable of being divided and further lengthened.
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. Producing cycle and other cranks in the rough from a bar of suitable metal
by rolling and shaping the said bar, between rolls, into a length of continuous crank
shaped portions, capable of being divided, substantially as described.
Second. Producing cycle and other cranks in the rough from a bar of metal by a
rolling process which primarily shapes them, and lengthening them out after being
divided, or separated, and secondarily shaping them into a finished rough blank,
substantially as described.
Third. The particular method of shaping cycle and other cranks in a bar length and
separately as described.
Dated this 21st den of Tule 1907
W. P. THOMPSON & Co.,
11, Burlington Chambers, New Street, Birmingham,
Agents for Applicant.