Improvements in Cycle-pedals.
Year: 1893

page_text: Date of Application, 8th June, 1893-Accepted, 30th Sept., 1893
COMPLETE SPECIFICATION.
Improvements in Cycle-pedals.
I, EDWARD WARWICK, Manufacturer, of Sheffield Works, Alma Street, Aston,
in the County of Warwick, a communication from Thomas Broadbent, Springfield,
Massachusetts, U.S. America 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:-
This invention has for its object the production of a cycle pedal of such
configuration as to provide a large bearing surface for the foot of operator together
with easy action combined with minimum weight.
I will now proceed to describe with reference to the accompanying drawings the
manner in which my invention is constructed and used, similar letters refer to
similar parts throughout the several views.
Figure 1. represents a vertical section of the complete pedal (exclusive of the
rubbers) on the line A. B.
Fig. 2. represents a plan of Figure 1.
Fig. 3. represents a perspective view of bearing-plate.
Fig. 4. represents a transverse section of Figure 2 on the line C D.
Fig. 5. represents a vertical elevation of improved pedal "not in section."
Fig. 6. represents a plan of duplex rubber.
Fig. 7. represents a section of Figure 2 on the line C D with the duplex rubber
in position.
Fig. 8. represents an elevation of the duplex rubber.
Fig. 9. represents the connecting-tube.
Fig. 10. represents a broken portion of bearing-plate carrying a square ear.
Fig. 11. represents broken off portions of the depending apertured necks of hinge-
joint described in third modification.
Fig. 12. represents the single rubbers, described in fourth modification.
In carrying out the first modification of my invention, I provide two of the
bearing-plates a as shewn in perspective at Fig. 3.
I next provide the connecting tube as shewn in perspective at Figure 9, I next
provide the sleeves J I next provide the threaded shaft c, I next provide the foot-
rubber as shewn separately at Figure 8.
The upper and lower bearing plates are secured together, with the tube b con-
nected centrally, as shewn at Figures 1 and 2, the threaded shaft c passing through
the connecting-tube, the root ends of shaft c taking a bearing direct on to
spherical balls d and the threaded front end taking into the cone e, the shaft c being
tightened and adjusted onto balls by means of the adjusting nut h. The
completed pedal put together in the manner hereinbefore described is suitable
for use as a rat-trap pedal, the riders feet taking a bearing on the spikes or
serrations.
The adjustment of the connecting tube within the lugs of bearing-plate is
attained by the following means; the external diameter of the largest part of the
connecting tube is such as to pass easily through the holes or passages h h formed
n the lugs.
The connecting tube is secured and locked in position over the threaded shaft c
and inside the sleeves by means of the locking nuts such locking nuts taking on
to the screwed shouldered outer surface m of sleeves and bearing against the
nternal faces of lugs, the holes a in round locking nuts are provided to receive
pointed stylo or spanner, although I can in some cases use hexagon nuts.
1 provide one square ear similar to Figure 10, on each bearing plate, or two
Square ears on one bearing plate and two round ended ears on the other plate.

page_text: A bell-groove is formed in the sleeves j as shewn in position at Figure 1, such
ball groove forming a bearing for the balls d the other part of the ball bearing
being formed by the root end of the shaft c; the body or middle support consists
of the sleeves j connected by means of the tube b, the ends of such tube bare
passed through the sleeves one end of such tube 6 projecting slightly through
the root end sleeve and taking a bearing on the balls d, the other end of the
tube 6 projecting slightly through the front end sleeve and taking a bearing on the
balls f, it will be apparent that the shaft c can be removed from the tube b and
that the balls d and would be held in position by means of the extreme ends of
the tube such ends projecting slightly within the ball grooves and resting on the
balls d and f.
By a second modification of my invention, I provide a duplex rubber as shewn
at Figs. 6, 7, and 8, the duplex rubber having the two, foot surfaces o & p connected
together by means of the continuous depending apertured neck the aperture
being provided to receive the connecting-tube.
The duplex rubber is connected to the two bearing-plates in the following
manner :-
The foot-surface o would be compressed and pushed through the opening r of
upper bearing-plate, the underside's of foot surface could then be lowered into
position resting against the outer surface of upper-bearing-plate the foot surface o
would next be again compressed and passed through the opening of lower-
bearing-plate and after the expansion of the compressed foot rest into its normal
shape, it would be placed into position with its underside resting against the outer
surface of lower-foot-plate, the connecting tube b would then be passed through
the aperture t provided in the neck g to receive it, the threaded shaft c would next
be passed through the connecting tube b and adjusted on the balls as fully described
in first modification.
By a third modification I provide separate rubbers, each separate rubber having
a depending apertured neck as described in second modification, the two apertured
necks of the two separate rubbers, taking into each other, like the mortices and
tennons of a hinge, the connecting tube b passing through the morticed necks like
the central pin of a hinge joint.
By a fourth modification I dispense with the apertured neck and secure the
rubber on the face u by means of projections v formed on the underside of rubber,
such projections passing into piercings we made in the flat web-surface u of bearing-
plate.
The projections v are shewn of a dovetail shape such projection can be compressed
through the piercings, w and will when passed into such dovetailed piercings expand
into the dovetails and lock the projections within the piercings, the piercings
although shewn diamond shape may be of any other suitable configuration.
Having now particularly described and ascertained the nature of my said inven-
, and in what manner the same is to be performed, 1 declare that what I
claim is,
1st. A pedal consisting of upper and lower bearing-plates of approximately
circular form, each having an upset edge-surrounding lip, substantially as
described.
2. A pedal consisting of upper and lower bearing-plates of approximately circular
form, each having diametrically opposing upturned wings and each wing provided
plate having the upset edge-surrounding lip, substantially as described.
3. A pedal consisting of upper and lower bearing plates each having an interval
portion thereof upset and serrated, and the intermediate body to which such plates
are connected substantially as described.
4. A pedal consisting of thin upper and lower bearing-plates each with under-
turned portions thereof forming lugs, in combination with a central uniting body,
substantially as described.
5. A pedal consisting of a pair of separate disks or rings with integral under-

page_text: turned ears, and a tube connected with said ears and uniting the disks, and a
shaft on which the tubular uniting body of the pedal is rotatable, substantially as
described.
6. A pedal consisting of a pair of thin, separated, metallic disks each having
opposing ears turned towards the inner side of the opposite plate, and the ears of
one of said disks having a squared end, and the tubular pedal-body supporting said
bearing plates, substantially as described.
7. In a pedal the combination with the tube, the sleeve externally shouldered
and having a portion externally screw-threaded, fixed upon the extremity of the
tube, with the portion extending beyond the tube end internally formed to constitute
a member of the ball bearing, the opposing foot-bearing plates with the underturned
apertured ear-pieces fitted over the sleeve next to the shoulder, and the nut
ngaging the threaded portion of the sleeve, and exerting a binding action upon
the said ear-pieces, substantially as described.
8. In a pedal in combination, the tube with the end portions of contracted
diameter, the sleeve with the ball-groove peripherally therewithin, secured by a
portion of its length upon the contracted part of the tube and so arranged that the
extremity of the tube lies within the ball-groove, the pair of plates each having
the underturned ear-lugs fitted over and confined upon the sleeve, the threaded
shaft, the cone screwing thereon and the balls, substantially as described.
9. In a pedal, the body or middle support comprising a sleeve with the ball
groove and the tube having its extremity fitted within and through a portion of the
length of the sleeve, the tube end protruding slightly within the ball-groove, for
the purpose of retaining the balls when axle is removed, the shaft, and the cone
screwing onto the shaft, between which and the wall of the groove are the balls,
substantially as and for the purposes set forth.
10. A pedal for a velocipede consisting of a pair of approximately circular bearing-
plates with underturned integrally formed ears and a supporting pedal-body with
which said ears have engagements, substantially as described.
11. In a pedal in combination, the tubular body with necked-down extremities, the
sleeves, D, with shouldered and screw-threaded portions and the ball-grooves, the
foot-bearing plates centrally apertured with the oppositely extended and upturned
guard-wings, upturned border-lips, the inner upturned serrated lips, and the under-
turned perforated ear-lugs, which embrace the sleeves, and the ring-nuts, all as
described and shown.
12. In a pedal for a velocipede, the combination with a pedal body or center to
be rotatably mounted, of a foot-plate arranged with its bearing surface alongside
and substantially parallel with the said pedal-body, and having at opposite portions
angularly extended ear-lugs which have engagements with said body, substantially
as described.
13. In a velocipede in combination, a sleeve-like member of a ball-bearing,.
having the internal ball-groove, of a tubular part having its extremity protruding
slightly within the inner boundary of the ball-groove, the balls retained in the
groove by said protruding tubular extremity together with the cone, or secondary
member of the bearings, substantially as described.
14. In a pedal for velocipedes, the combination with a body of tubular or
cylindrical form, of a centrally apertured plate above or alongside and parallel
with the body and a thickness of rubber supported by said plate and having a
depending and apertured neck which extends within the aperture of the plate and
embraces the pedal-body, substantially as described.
Dated this 2nd day of June 1893
EDWARD WARWICK,