US716129A - Bicycle-gearing. - Google Patents
Bicycle-gearing. Download PDFInfo
- Publication number
- US716129A US716129A US11811302A US1902118113A US716129A US 716129 A US716129 A US 716129A US 11811302 A US11811302 A US 11811302A US 1902118113 A US1902118113 A US 1902118113A US 716129 A US716129 A US 716129A
- Authority
- US
- United States
- Prior art keywords
- crank
- cylinder
- lever
- sprocket
- shaft
- 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 - Lifetime
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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
- B62M25/00—Actuators for gearing speed-change mechanisms specially adapted for cycles
- B62M25/08—Actuators for gearing speed-change mechanisms specially adapted for cycles with electrical or fluid transmitting systems
Definitions
- the object of the invention is to provide an exceedingly cheap, simple, and efficient means for accomplishing this variation in speed without removing any nuts or bolts or without making any change in the drivechains except to shift the said chain from oneW side of said sprockets to another.
- Figure l is a side elevation illustrating the crank-hangerand drive-sprockets constructed and arranged in accordance with my invention.
- Fig. 2 ⁇ is a horizontal sectional view taken through the crank-hanger and showing the novel manner of journaling the crank-shaft therein.
- Fig'. 3 is a vertical sectional view showing the eccentric arrangement of the crank shaft within the crankhanger.
- Fig. l is a side elevation showing the cylinder shiftedso as to throw the crankhanger to its rearmost position.
- Fig. 5 is a detail perspective View of the catch.
- 'Fig. 6 is a detail perspective View showing the end of the lever.
- Fig. 7 is a detail View showing the head of the cylinder and the lever connected thereto.
- Fig. 8 is a detail perspective view of the cylinder.
- crank-hanger A which ⁇ is connected to the y bicycle-frame in the usual manner, and fitting snugly within the said crank-hanger is a cylinder B, the heads B of which have openings B2 produced eccentrically therein,
- the bearingsleeve C may be composed of any desirable number of parts provided with the usual ball-bearing devices.
- a sprocket E is mounted upon the crankshaft D,said sprocket being a double sprocket, one toothed rim E being larger than the other toothed rim E2, and consequently provided with a larger number of teeth, the larger rim being employed when speed is desirable and the smaller rim being employed when power is desired more than speed.
- the sprocket F upon the rear axle is also double, the smaller one, F', being adapted for use in connection with the larger sprocket-rim of the Wheel E,'while the larger one, ⁇ F2, ⁇ is ad apted for use in connection with the smaller rim E2 of the sprocket E, it being understood that the diameters of said sprockets are such that one chain can be used upon both sets of sprockets without making any changes or alterations in the said chain.
- a lever G which is rigidly connected to one of the cylinder-heads and is provided with a spring-actuated latch Gf at its free end which is adapted to engage a catch G2, depending from the rear horizontal member of the frame.
- a suitable guide-finger GS is arranged parallel with' the catch for the purpose of guiding and holding,r the lever and its spring-latch in connection with the catch.
- crank-shaft journaled in the said sleeve a crank-shaft journaled in the said sleeve
- double sprocket mounted on the crank-shaft, a double sprocket mounted upon thel rear axle, the drive chain connecting the said sprockets, the lever connected to one end of the cylinder, a spring-actuated latch carried by the said lever and the catch arranged upon FRED STEINKAMP.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Description
.nls
Prien..
ATENT `FREI) STEINKAMI, OF BETHANY, CALIFORNIA.
BICYCLE-GEARING.
SJPECFICATION forming part of Letters Patent No. 716,129, dated December 16, 1902.
L Application led August 2,1902. Serial No. 118,113. (No model.)
obtain an increase of speed upon level ando good roads and a corresponding increase in power and decrease in speed upon steep or bad roads.
The object of the invention is to provide an exceedingly cheap, simple, and efficient means for accomplishing this variation in speed without removing any nuts or bolts or without making any change in the drivechains except to shift the said chain from oneW side of said sprockets to another.
Theinven tion consists also in the novel features of construction and combination, all of which will be fully described hereinafter and pointed out in the claims.
In the drawings forming part of this specication, Figure l is a side elevation illustrating the crank-hangerand drive-sprockets constructed and arranged in accordance with my invention.` Fig. 2`is a horizontal sectional view taken through the crank-hanger and showing the novel manner of journaling the crank-shaft therein. Fig'. 3 is a vertical sectional view showing the eccentric arrangement of the crank shaft within the crankhanger. Fig. lis a side elevation showing the cylinder shiftedso as to throw the crankhanger to its rearmost position. Fig. 5 is a detail perspective View of the catch. 'Fig. 6 is a detail perspective View showing the end of the lever. Fig. 7 is a detail View showing the head of the cylinder and the lever connected thereto. Fig. 8 is a detail perspective view of the cylinder.
\ In carrying out my invention I employ a crank-hanger A, which `is connected to the y bicycle-frame in the usual manner, and fitting snugly within the said crank-hanger is a cylinder B, the heads B of which have openings B2 produced eccentrically therein,
and secured in the said eccentric openings is thesleeve C,in which the crank-shaftD is journaled. The bearingsleeve C may be composed of any desirable number of parts provided with the usual ball-bearing devices.
A sprocket E is mounted upon the crankshaft D,said sprocket being a double sprocket, one toothed rim E being larger than the other toothed rim E2, and consequently provided with a larger number of teeth, the larger rim being employed when speed is desirable and the smaller rim being employed when power is desired more than speed. The sprocket F upon the rear axle is also double, the smaller one, F', being adapted for use in connection with the larger sprocket-rim of the Wheel E,'while the larger one,`F2,` is ad apted for use in connection with the smaller rim E2 of the sprocket E, it being understood that the diameters of said sprockets are such that one chain can be used upon both sets of sprockets without making any changes or alterations in the said chain. In order to slacken the chain, so as to shift it from one set of sprockets to another, I propose to move the crank-shaft rearwardly, and inorder to do this it is only necessary to turn the cylinder in the crank-hanger, inasmuch as the sleeve` carrying the crank-shaft iseccentrically arranged in the said sleeve B. In order to accomplish this movement of the cylinder,
`Ifprovide a lever G, which is rigidly connected to one of the cylinder-heads and is provided with a spring-actuated latch Gf at its free end which is adapted to engage a catch G2, depending from the rear horizontal member of the frame. A suitable guide-finger GS is arranged parallel with' the catch for the purpose of guiding and holding,r the lever and its spring-latch in connection with the catch. When the lever is held in engagement with the catch, the crank-shaft will be held to its foremost position,and consequently the drivechain will be held taut, and when it is desired to slacken the chain the lever is disengaged from the catch and moved around to the position shown in Fig. 4f, thus shifting the crank-shaft, and with it the sprocket E, to their lowermost position, and at each time the chain can be readily transferred from one set of sprockets to the other. After the chain ICO ' has been adjusted the lever is turned back,
carrying with it the cylinder, and consequently the crank-shaft and sprocket.
It will thus be seen that I provide an exceedingly cheap, simple, and efiicient construction, whereby a variable-speed drivinggear is produced, and one in which the variation can be accomplished without removing any bolts or nuts or Without making any change in the drive-chain.
Having thus fully described my invention,
what I claim as new, and desire to secure by Letters Patent, is-
l. The combination with a crank-hanger, of a cylinder mounted to turn therein, the crank-shaft journaled eccentrcally in the said cylinder, a lever connected to the said cylinder whereby the cylinder is turned, and a catch adapted to engage and hold the lever in a locked position for the purpose specified.
2. The combination with a crank-hanger, of a cylinder adapted to turn therein, a sleeve farranged eccentricall'y in the cylinder, the
crank-shaft journaled in the said sleeve, a
double sprocket mounted on the crank-shaft, a double sprocket mounted upon thel rear axle, the drive chain connecting the said sprockets, the lever connected to one end of the cylinder, a spring-actuated latch carried by the said lever and the catch arranged upon FRED STEINKAMP.
Witnesses:
F. O. I-loUsKEN, WM. C. BRAASCH.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11811302A US716129A (en) | 1902-08-02 | 1902-08-02 | Bicycle-gearing. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11811302A US716129A (en) | 1902-08-02 | 1902-08-02 | Bicycle-gearing. |
Publications (1)
Publication Number | Publication Date |
---|---|
US716129A true US716129A (en) | 1902-12-16 |
Family
ID=2784649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11811302A Expired - Lifetime US716129A (en) | 1902-08-02 | 1902-08-02 | Bicycle-gearing. |
Country Status (1)
Country | Link |
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US (1) | US716129A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090199677A1 (en) * | 2008-02-12 | 2009-08-13 | Niner, Inc. | Bicycle eccentric bottom bracket |
US20140073467A1 (en) * | 2012-09-13 | 2014-03-13 | Makita Corporation | Belt drive for a motor-driven tool |
US20210276663A1 (en) * | 2020-03-03 | 2021-09-09 | William W. Nelson | Kits to convert single-speed bicycles to multi-speed bicycles |
-
1902
- 1902-08-02 US US11811302A patent/US716129A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090199677A1 (en) * | 2008-02-12 | 2009-08-13 | Niner, Inc. | Bicycle eccentric bottom bracket |
US8561498B2 (en) * | 2008-02-12 | 2013-10-22 | Niner, Inc. | Bicycle eccentric bottom bracket |
US20140073467A1 (en) * | 2012-09-13 | 2014-03-13 | Makita Corporation | Belt drive for a motor-driven tool |
US9261171B2 (en) * | 2012-09-13 | 2016-02-16 | Makita Corporation | Belt drive for a motor-driven tool |
US20210276663A1 (en) * | 2020-03-03 | 2021-09-09 | William W. Nelson | Kits to convert single-speed bicycles to multi-speed bicycles |
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