Improvements in Bicycles, Tricycles, and like Vehicles.
Year: 1890

page_text: Date of Application, 15th Dec., 1890
Complete Specification Left, 27th June, 1891-Accepted, 1st Aug., 1891
PROVISIONAL SPECIFICATION.
Improvements in Bicycles, Tricycles, and like Vehicles.
We SAMUEL JAMSON, 10 Bangor Street, and THOMAS WALSGROVE
14 Charlotte Street, Nottingham, Machinists, do hereby declare the nature of
this invention to be as follows:-
The rims of wheels for bicycles, tricycles and like vehicles we form U or V shaped
in section with a flange projecting outwards from each edge, the flanges are either
plain, or grooved on their upper or lower sides, which project beyond the sides of
the indiarubber tire placed on the rim. Instead of a brake pressing upon the
indiarubber tire, we employ a brake fork slightly wider between the prongs than
the diameter of the tire. Each prong of the fork terminates in a friction piece
which are either pressed onto the top of the flanges of the wheel rim, or up to the
lower side of the flanges when the brake is in use.
The break fork rod either passes up through the stem of the wheel bearing fork
or slides in studs projecting from the stem, the break rod is provided with a spring
which holds the break clear of the rubber tire. The break when required is
pressed onto or up to the flanges of the wheel rim by a cam lever operated by the
rider.
Deted this Thi-toanth
H. W. GOUGH, C.E.,
Agent.
COMPLETE SPECIFICATION.
Improvements in Bicycles, Tricycles, and like Vehicles.
We SAMUEL JAMSON 10 Bangor Street and THOMAS WALSGROVE
14 Charlotte Street Nottingham Machinists 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 :-
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a left side view of the front wheel bearing fork of a safety
bicycle with our improvements applied thereto.
Figure 2 an enlarged view of the same looking at the back, showing the framing
in section as cut through on the line a a Figure 1 and the lower parts of the bearing
fork broken away.
Figure 3 shows a back view of an inclined slotted cam for operating a break
rod.
Figure 4 shows a back view of the upper end of a break fork with friction
pieces, wheel rim, and india rubber tire in section.
The rims of wheels for bicycles, tricycles and like vehicles are formed of the
shape shown in section at A Figure 4 with a flange projecting outwards from each
edge clear of the india-rubber tire A' placed on the rim.
Instead of a break pressing upon the india-rubber tire, we employ a break rod B
which passes up through and is free to slide in the stem C of the wheel bearing
fork shown at Figures 1 and 2, the lower end of the rod terminates in a fork
slightly wider between the prongs than the diameter of the india-rubber tire. Each
prong of the fork terminates in a friction piece B' each provided on its underside
with a strip B' of iron, leather, or other suitable material. Near the lower end of
[Price Girl

page_text: the break rod a stud B³ projects which slides in a vertical slot B cut in the wheel
bearing fork "shown by dotted lines at Figure 4."
The break rod near its upper end carries a stud D which engages with an
inclined slot in a circular cam boss D1 "shown at Figures 2 and 3" the stem of the
cam is held position by, and is free to turn in a bearing bracket D secured to
the handles D3 of the front wheel bearing fork.
To prevent vertical vibration of the break rod a spring D is placed on its lower
end, this spring when the stud D is in the lowest end of the cam slot ". as shown at
Figures 2 and 3" presses the break fork downwards firmly on to the flanges of the
wheel rim "as shown at Figure 4," a partial revolution of the cam boss being made
by means of the milled head above the bearing bracket placing the stud D at the
highest end of the cam slot, will lift the break fork clear of the flanges of the
wheel rim at the will of the rider.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
The improvements in bicycles tricycles and like vehicles substantially as
described and illustrated in the drawings annexed.
Dated this Twenty-sixth day of June 1891.
H. W. GOUGH, C.E.,
Agent.