Improvements in and relating to Velocipedes.
Year: 1894

page_text: Date of Application, 20th Oct., 1894
Complete Specification Left, 20th July, 1895 Accepted, 24th Aug., 1895
Improvements in and relating to Velocipedes.
I, ROBERT SAMUEL LOVELACE, of Henstridge, in, the County of Somerset,
Cycle Manufacturer, do hereby declare the, nature, of this invention. to be as
follows:
My invention relates to an improved frame for velocipedes which is particularly
adapted for rear driving, safety bicycles.
The frame is of the "diamond"type with a vertical diagonal, and my improve-
ment relates chiefly to the construction of the back forks, and the vertical diagonal.
The members of the lower back, fork are- made of tubes which are.flattened to an
oval shape and are arranged to lie with their minor-axes in the vertical plane so
that their major axes are in the horizoutal. plane, the object being to stiffen the
fork, against lateral twist from the pull of the driving chain. These, members are
brazed at their forward; ends to a cross piece made out of a piece of tube flattened
into an oval shape, and this, cross piece .is, extended forward, in the form of, a single
flattened ovalstube the ends, of which are splayed, out and are fixed to the pedal-
crank axle.hearing, bracket by means of bolts, or, by, being, brazed thereto. The
rear ends of the members of the lower back, fork are flattened in the reverse.way
to receive. sluts to carry the axle of the driving, wheel, and at their extreme ends
holes are provided:for, bolts by which the members of the upper back fork are
fixed to.the members. of the lower back fork.
The upper back fork is constructed of oval tubes. arranged in a similar, manner
to those of the lower. back fork, and they are attached to a similar, flattened, tubular
Gross piece carrying a tubular extension which is, adapted to slide in a compound
socket, preferably stamped up out of sheet metal, fixed to and carrying both the
verticali diagonal and the top: member of the forward part of, the frame. The
bottom member of the forward, part of the frame is fixed to the pedal,crank axle
bearing. bracket. by. brazing, or otherwise, in, the usual, mapner, and, the tubular
socket for the steering head is carried by the forward. ends of the two members of
the front part of the frame in the ordinary, manner. Both the tubular socket.for
the steering.head and the pedal-crank axle bearing bracket are constructed out of
pieces of tube stamped or blocked up to the required shape.
The vertical diagonal consists of a single tube fixed to or carried by the compound
socket. hereinbefore referred to and at about half the depth of the frame it is
connected to a forked: piece the .Jower, ends of the. members of which; are.fixed to
the pedal-crank axle bearing bracket.
The forked piece is constructed from a single piece of tube which is saw-cut
partially through at the centre of its. length and then doubled on itself, the ends of
the tube forming each member of the fork being flattened out to a D-shape, the flat
surfaces of which, are opposite to, each, other and the half round parts facing
outwards. The free ends of the members of this fork are attached to the pedal-
crank axle bearing bracket by allowing the extensions of the flat sides thereof to
pass through saw-cuts in the said bracket, the, ends of the said parts being, turned
up inside the said brackets and; brazed, while, the ends of the curved sides, of. the
members are: flanged out to lie on the exterior of the bracket.
10h d... £ Databor 1801
ROBERT E. PHILLIPS, M.I.M.E.,,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to Velocipedes.
I, ROBERT SAMUEL LOVELACE, of Henstridge, in the County of Somerset,
Cycle Manufacturer, 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 :-
My invention relates to an improved frame for velocipedes which is particularly
adapted for rear-driving safety bicycles.
In the accompanying drawing which illustrates my invention :-
Figure 1 is a view in side elevation.
Figure 2 is a view in back elevation, and
Figure 3 is a broken view in plan-on an enlarged scale-of the part of the
frame adjacent to the pedal-crank axle bracket.
Throughout the views similar parts are marked with like letters of reference.
The frame is of the "diamond" type with a vertical diagonal, and my improve-
ment relates chiefly to the construction of the back forks and the vertical diagonal.
The members A, A, of the lower back fork are made of tubes which are flattened
to an oval shape and are arranged to lie with their minor axes in the vertical plane
so that their major axes are in a horizontal plane, the object being to stiffen the
fork against lateral twist from the pull of the driving chain. These members are
brazed at their forward ends to a cross piece B made out of a piece of tube flattened
into an oval shape. This piece carries an extension B'-in the form of a flattened
oval tube the forward end of which is splayed out to enable it to be fixed to the
pedal-crank axle bearing bracket-X either by bolts as shown or by brazing. The
rear ends of the members A, A, of the lower back fork are flattened in the reverse
way i.e. at right angles to the flattened tubes to receive or form slotted pieces a, a,
adapted to receive the axle of the driving wheel..
"
.
The upper back fork is constructed of oval tubes. C, C, arranged in a similar
manner to those of the lower back fork and they are attached to a similar flattened
tubular cross piece D. carrying a tubular extension D' which is adapted to slide in
or be otherwise fixed to a socket E-preferably stamped up out of sheet metal-
fixed to the vertical diagonal of the frame. The lower ends of the members C, C,
are connected to the pieces a, a, in the ordinary manner. The top member G and
the bottom member H of the forward part of the frame are fixed to the vertical
diagonal and to the pedal-crank axle bearing bracket respectively. in the usual
manner, and they are both attached to the socket Y for the steering head. Both
the tubular socket Y for the steering head and the pedal-crank axle bearing
bracket X are preferably constructed out of pieces of tube stamped or blocked up
to the required shape.
A
The vertical diagonal consists of a single tube F fixed to or carried by the
socket E hereinbefore referred to, and at about half the depth of the frame it is
connected to a forked piece F', the lower ends of the members of which are fixed
to the pedal-crauk axle bearing bracket X.
The forked piece F¹ is constructed from a single piece of tube which is saw cut
partially through at the centre of its length and then doubled on itself, the ends of
the tube forming each member of the fork being flattened out to a D-shape, the
flat surfaces of which are opposite to each other and the half round parts facing
outwards. The free ends of the members of this fork are preferably attached to
the pedal-crank axle bearing bracket by allowing the extensions of the flat sides
thereof to pass through saw-cuts in the said brackets the ends of the said parts
being turned up inside the said brackets and brazed, while the ends of the curved
sides of the members are flanged out to lie on the exterior of the bracket.

page_text: I am aware that frames for cycles have already been made with a vertical
diagonal in the form of a fork, and also that the tubular members of such frames
have been made of an oval shape in cross section and I do not therefore claim such
broadly, but
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 :--
The improved frame for cycles as hereinbefore described and illustrated by the
accompanying drawing.
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.