GB1102379A - A crank driving mechanism - Google Patents
A crank driving mechanismInfo
- Publication number
- GB1102379A GB1102379A GB4435865A GB4435865A GB1102379A GB 1102379 A GB1102379 A GB 1102379A GB 4435865 A GB4435865 A GB 4435865A GB 4435865 A GB4435865 A GB 4435865A GB 1102379 A GB1102379 A GB 1102379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- pin
- slot
- crank
- cam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M1/00—Rider propulsion of wheeled vehicles
- B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
- B62M1/26—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by rotary cranks combined with reciprocating levers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
1,102,379. Variable-throw cranks. J. S. HOLTON. 16 Jan., 1967 [20 Oct., 1965], No. 44358/65. Heading F2K. A variable throw crank mechanism for a bicycle causes a pedal (not shown), mounted at 22 on one end of a lever 11 pivoted intermediate its ends at 12 to the crankpin of a driven crank 10 having an axis of rotation 13, to follow a circular arc downward stroke and a substantially elliptical return path. The other end of the lever 11 carries a pin 18 which projects from both sides of the lever to engage slots 19, 20 in similar links 14, 15 which are pivoted to support structure at 16, 17 respectively. During the downward stroke, a pin 21 through the lever 11 engages arcuate end surfaces of the links 14, 15 and the lever 11 and crank 10 pivot as a unit about the axis 13 until the pin 21 engages a projection 15a of the link 15. The pin 18 then moves to the other end 19b of slot 19 and returns to the first end 19a thereof, while remaining at the outer end of slot 20, the pin 18 engaging the lower surface of a fixed cam 23 during the latter part of this movement. When the pin has rounded the rear end of cam 23, it moves to the inner end 20b of slot 20 and out again, remaining simultaneously at the outer end 19a of slot 19, and being guided by the upper surface of cam 23, until the lever 11 reaches the position, shown in full lines, at the start of the next downstroke, the crank 10 then having completed one revolution. The mechanism is duplicated for the other pedal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4435865A GB1102379A (en) | 1965-10-20 | 1965-10-20 | A crank driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4435865A GB1102379A (en) | 1965-10-20 | 1965-10-20 | A crank driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1102379A true GB1102379A (en) | 1968-02-07 |
Family
ID=10432907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4435865A Expired GB1102379A (en) | 1965-10-20 | 1965-10-20 | A crank driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1102379A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2361755A (en) * | 2000-04-28 | 2001-10-31 | Brown Matthew Thornton | Means for converting reciprocating motion into rotation |
-
1965
- 1965-10-20 GB GB4435865A patent/GB1102379A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2361755A (en) * | 2000-04-28 | 2001-10-31 | Brown Matthew Thornton | Means for converting reciprocating motion into rotation |
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