Improvement connected with Bicycle and like Frames.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvement connected with Bicycle and like Frames.
We, RICHARD RUSSELL GUBBINS, of 95, Pelton Road, East Greenwich,
London, Engineer, and HERMANN Loog, of 36, Newgate Street, London, Manager,
do hereby declare the nature of this invention to be as follows:-
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This invention relates to means or appliances, portion or portions of which
serve as parts of the frames of chain driving bicycles or like machines or vehicles
and capable of being removed or detached and replaced with facility such as
when a wheel has to be repaired, or the inflatable tube repaired, or necessary
changes have to be made without necessitating any alteration of the tension
of the chain or a readjustment of the axial position of the wheel.
We will describe the invention as connected with the frame of a rear driven
bicycle for which it is specially adapted. The fork or axle carrying portion for
the side of the frame not carrying the chain wheel is produced from a separate
forging with inclined or undercut edges corresponding to those of lugs or cheeks
of a block or check piece on the end of the rear frame, the inclines or undercuts
being so arranged in conjunction with a bolt, or with a spring catch, or a clip
or clipping device that by the simple act of pressing or sliding one to the other
ensures a ready fixture of one part to the other in a rigid manner.
The second part of our invention relates to making both ends of rear frame
in the same manner and providing each side with an affixable plate or axle
carrying ends in which by inclines, undercuts, or other devices with fastening
clips, the rear wheel can be removed from the frame and the wheel replaced
without interfering with the axial adjustment in such fork plates. The fork
plate or plates in which the wheel axle is carried may be hinged or hooked to
drop or to be raised, or be slid out of and into contact with the framing in such
manner that if only one plate be loosened or removed the pneumatic tube could
be removed for repair and replaced without the wheel being dislodged or the
adjustment altered.
101
7
1000
Improvement connected with Bicycle and like Frames.
We, RICHARD RUSSELL GUBBINS, of 95, l'elton Road, East Greenwich,
35 London, Engineer, and HERMANN LOOG, of 36, Newgate Street, London, Manager,
[Price 8d.]

page_text: do hereby déclare 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 relates to means or appliances, portion or portions of which
serve as parts of the frames of chain driving bicycles or like machines or vehicles
and capable of being removed or detached and replaced with facility such as
when a wheel has to be repaired, or the inflatable tube repaired, or necessary
changes have to be made without necessitating any alteration of the tension
of the chain or re-adjustment of the axial position of the rear wheel.
Our invention is shown on the annexed drawings.
Figure 1 is a side elevation of one of our improved ends provided with under-
cuts and which is secured to the back fork and the back stay respectively of,
say, a bicycle.
Figure 2 is a side elevation of one of our separable plates which we attach
to the fork ends by inclined edges to enter the undercuts of the back fork ends,
so that when slipped in position it becomes locked by a spring bolt or pin which
enters a hole in the back fork ends and fixes the two parts rigidly together.
Figure 3 is a side elevation of one of our improved back fork ends with a hook
like projection from the bottom edge, into which hook a pin of a lug projecting
from our separable plate shown at Figure 4 can be temporarily secured before
such separable plate be entirely removed; or when a wheel has to be lowered
previous to being removed bodily, such as is indicated at Figure 5, this being a
side elevation of the improved back fork end and having the separable plates
turned down previously to being unhooked.
Figure 6 shows our improved back fork end and the separable plate in the
position they occupy as a complete back fork end with the axle of the rear
wheel properly adjusted in the slot of the back plate and which adjustment need
not be interfered with, whether it be necessary to remove the pneumatic tube
only, or to remove the rear wheel and the rear chain wheel bodily.
Figure 7 is a view in side elevation, and Figure 8 is a view in end elevation
of a slightly modified form of our improved attachment.
A, indicates our improved end attached to back stay B and to back fork C
respectively. D, indicates a separable plate affixed to said end A by inclines E, E,
on D and undercut of lips F, F, of the end A.
G, indicates a bolt or pin hole in end A for locating the separable plate D
when plate D is pushed into position, as shown at Figure 6.
H, indicates a rear wheel axle previously adjusted in the well known manner
by the adjustment screw I and block J in the slot of the separable plate 1).
K, is the spring of bolt or pin L loosely affixed to plate D for its pin to enter
hole G of end A to fix the plate D in position when replaced to the end A. This
bolt or pin has a head M by which it can be partially withdrawn. N, indicates
the rear chain wheel on rear axle H.
We have only shown one side plate D as separable from the end A, such as
when the tyre has to be removed from the rear wheel, said tyre after being
detached can be drawn down sideways (if the plate 1) be first loosened from the
end A) and can then be slewed out from the gap now formed between the end A
and the detached plate D without the previous adjustment of the wheel in the
plate D being interfered with, as at present.
If our improved ends he applied to both tails of the back fork, the back forks
can be raised after the detachment of the two side plates D, D, to shorten the
distance in the length of the driving chain to slip it off from the rear chain
wheel, and then the wheel with the previous adjustment still intact can be
bodily removed from the machine and be replaced at will.
In Figures 7 and 8 we show a quadrant shape of sliding connection of the
plate D within undercuts or a dovetailed groove in our improved end A, the
two parts being securable by a bolt or screw pin L to lock the two parts rigidly
together. On removing the bolt or pin L, the part D can be slid away from

page_text: the end A on either side of the back fork, or both side plates D can be removed
simultaneously.
In Figures 3, 4, and 5, we show the back fork end provided at its lower end
with a hook-shaped projection O in which is rotatably seated a pin P which
projects laterally from the separable plate D, whereby the plate may be tem-
porarily supported in place on the back fork end before said plate may be entirely
removed, as where a wheel has to be lowered previous to being removed bodily,
as indicated in Figure 5.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is;
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1. The end or ends A with undercut lips F, F, separable plate or plates D
with inclined edges E, E, fastening bolts or pins L as attachments to the rear
forks and back stays of a cycle, substantially as described.
2. In a bicycle, the combination with the back fork end A, of one or more
plates D detachably connected to said back fork end and provided with means
for adjustably retaining the rear wheel axle, whereby said plate or plates together
with the wheel may be removed and replaced without disturbing the adjustment
of said wheel, substantially as described.
3. In a bicycle, the combination with the back fork end A, of the plate D
detachably secured thereto, the rear axle supported in said plate, and means for
adjusting said axle forwardly and rearwardly in said plate, the whole being
so constructed and arranged that the plate D) and the axle may be detached
from and replaced on the machine without disturbing the adjustment of the
axle, substantially as described.
The 13th day of March 1900.
R. CORE GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said R. R. Gubbins and H. Loog.