IMPROVEMENTS IN AND RELATING TO BICYCLES AND SOME TRICYCLES, PARTS OF WHICH IMPROVEMENTS ARE APPLICABLE ALSO IN OTHER CASES WHERE CRANKS ARE MADE REMOVABLE
Year: 1879

page_text: LETTERS PATENT to Frederick Cafferata, of 31, Everton Road, and 18, Wilton
Street, Liverpool, in the County of Lancaster, Bicycle Manufacturer, for the
Invention of "IMPROVEMENTS IN AND RELATING TO BICYCLES AND SOME
TRICYCLES, PARTS OF WHICH IMPROVEMENTS ARE APPLICABLE ALSO IN OTHER
CASES WHERE CRANKS ARE MADE REMOVABLE."
Sealed the 12th August 1879, in pursuance of an Order of the Lord Chancellor,
dd the 7th February 1870
PROVISIONAL SPECIFICATION left by the said Frederick Cafferata at the
Office of the Commissioners of Patents on the 7th February 1879.
FREDERICK CAFFERATA, of 31, Everton Road, and 18, Wilton Street, Liverpool,
in the County of Lancaster, Bicycle Manufacturer. "IMPROVEMENTS IN BICYCLES
AND SOME TRICYCLES, PARTS OF WHICH IMPROVEMENTS ARE APPLICABLE ALSO IN
OTHER CASES WHERE CRANKS ARE MADE REMOVABLE."
This Invention consists, 1st, in constructing the fork of a bicycle and of some
tricycles of three or more tubes on each side, of preferably weldless drawn steel;
these are brazed or otherwise fixed to the lower crosshead, to the upper crosshead,
The tubes
and at botton to the joint or hinge to which the bearing is attached.
are preferably not placed in line, but with the centre one, in the case of three, standing
out beyond the others.
The 2nd part of my Invention consists in the crank and mode of fastening same.
I make the main hole in the crank and the end of the main crank axle an oval or
other shape not circular, and split at the base, and beyond the hole clasp the split
end to the crank body by means of a bolt and nut or their mechanical equivalent.
By slackening the nut the crank can be easily adjusted.
This mode of fastening on a moveable terminal crank is applicable to machinery
generally.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frederick Cafferata in the Great Seal Patent Office on the 14th
August 1879.
FREDERICK CAFFERATA, of 31, Everton Road, and 18, Wilton Street, Liverpool,
"IMPROVEMENTS IN AND
in the County of Lancaster, Bicycle Manufacturer.
RELATING TO BICYCLES AND SOME TRICYCLES, PARTS OF WHICH IMPROVEMENTS
ARE APPLICABLE ALSO IN OTHER CASES WHERE CRANKS ARE MADE REMOVABLE"
Fio 1 shows the side view of fork. with part of wheel and back bone; Fig. 2

page_text: shows front view of same; Fig. 3, plan of centre bridge; Fig. 4, side view of
crank.
This Invention consists, 1st, in constructing the fork of a bicycle and of some
tricycles of three or more tubes-on-each-side, preferably-weldless-drawn-steel; these
are brazed or otherwise fixed-to-the-centre-bridge, to the upper cross head, and at
bottom to the joint or hinge to which the bearing is attached.
In the Drawing, A, A, A, are-the-tubes-made of drawn steel tubing 5/8 of an inch
in diameter; these are kept "%, of an inch at the centre bridge, but preferably swaged
down-to about 3/8 of an inch at each end. These tubes are preferably not placed
in line, but with the centre one, in the case of three, standing out beyond the others
at the centre bridge, as shown. B is the centre bridge stamped out of wrought iron,
steel, or other suitable tough metal, as shown.. C, joint or hinge, to which bearing
D is attached. This joint is also made out of stamped iron. E, handle bracket,
also stamped out complete. The tubes, after being inserted into their sockets in
pieces B, C, and E, are all brazed into the holes, so as to be perfectly rigid.
The second part of my Invention consists in the crank and mode of fastening
same; I make the main hole in the crank and the end of the main crank axle an
oval or other shape not circular, and split at the base, and beyond the hole clasp the
split end to the crank body by means of a bolt and nut or their mechanical equiva-
lent. By slackening the nut the crank can be easily adjusted. Fig. 4 is a view of
crank; it is stamped out in the usual manner, and the oval hole G afterwards drifted
into shape; the cut H is then sawn out. This mode of fastening on a movable
terminal crank is applicable to machinery generally.
Having now described my Invention, and the best mode known to me of carrying
it into effect, I wish it to be understood that I make no claim for the principle of
hollow or tubular forks in general, nor for placing one or even two tubes on each
side of the wheel to form the fork, but that what I believe to be new, and desire to
protect under the hereinbefore in part recited Letters Patent is,-
1st. The manufacture of velocipede forks with three or more tubes on each side,
braced together at the centre-bridge for the purposes described.
2nd. The construction of bicycle or tricycle forks, with tubes arranged in the
form of a tripod, or aproximately so, at the centre-bridge, so as to give as much
strength as possible to the fork.
3rd. The construction of cranks for bicycles and other structures, substantially as
described, with the main eyc split and bolted, or otherwise clamped together over
the oval or irregularly shaped axle.
In witness whereof, I, the said Frederick Cafferata, have hercunto set my
hand and seal, this Twelfth day of August, in the year of our Lord Onc
thousand eight hundred and seventy nine.
Witness,
WILLIAM-P-THOMPSON
International Patent Agency,
6, Lord Street,
Liverpool,
and
323, High Holborn, W.C.,
London.
FREDERICK CAFFERATA. (L.S.)