GB208291A - Improvements in, or connected with, change-speed belt gearing - Google Patents

Improvements in, or connected with, change-speed belt gearing

Info

Publication number
GB208291A
GB208291A GB2787622A GB2787622A GB208291A GB 208291 A GB208291 A GB 208291A GB 2787622 A GB2787622 A GB 2787622A GB 2787622 A GB2787622 A GB 2787622A GB 208291 A GB208291 A GB 208291A
Authority
GB
United Kingdom
Prior art keywords
belts
rod
pulleys
fast
blocks
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
Application number
GB2787622A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEORGE HIGHFIELD BROWN
Original Assignee
GEORGE HIGHFIELD BROWN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GEORGE HIGHFIELD BROWN filed Critical GEORGE HIGHFIELD BROWN
Priority to GB2787622A priority Critical patent/GB208291A/en
Publication of GB208291A publication Critical patent/GB208291A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes

Abstract

208,291. Brown, G. H. Oct. 14, 1922. Variable-speed belt gearing comprises two belts shifted simultaneously to change speed over two fast-and-loose pulleys 41, 40 and 42, 43 of different diameters upon a shaft 2. The beltforks 7, 8 are carried by blocks 5, 6, which slide on a parallel rod 1 and are normally pressed by springs 23, 24 so that distance screws 5<b>, 6<b> abut against the circular-ended prongs 9 of a shifting fork 22. In the application to an automatic screw machine, the fork 22 is moved to and fro by a cam acting through a rod 18, so that the belts are smited, one belt being always on one of the inner pulleys 41, 42, which are fast. The blocks 5, 6 are connected by a broken toggle 27 operated through a rod 33 and hand lever. To stop the machine, the toggle 27 is straightened, the forks thrust apart, and both belts brought on to the outer pulleys 40, 43, which are loose.
GB2787622A 1922-10-14 1922-10-14 Improvements in, or connected with, change-speed belt gearing Expired GB208291A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2787622A GB208291A (en) 1922-10-14 1922-10-14 Improvements in, or connected with, change-speed belt gearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2787622A GB208291A (en) 1922-10-14 1922-10-14 Improvements in, or connected with, change-speed belt gearing

Publications (1)

Publication Number Publication Date
GB208291A true GB208291A (en) 1923-12-20

Family

ID=10266711

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2787622A Expired GB208291A (en) 1922-10-14 1922-10-14 Improvements in, or connected with, change-speed belt gearing

Country Status (1)

Country Link
GB (1) GB208291A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112873563A (en) * 2021-01-13 2021-06-01 刘超 Stable drill retracting device with secondary speed reduction function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112873563A (en) * 2021-01-13 2021-06-01 刘超 Stable drill retracting device with secondary speed reduction function

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