GB721170A - Improvements relating to endless tracks for tractors and other vehicles - Google Patents
Improvements relating to endless tracks for tractors and other vehiclesInfo
- Publication number
- GB721170A GB721170A GB9505/52A GB950552A GB721170A GB 721170 A GB721170 A GB 721170A GB 9505/52 A GB9505/52 A GB 9505/52A GB 950552 A GB950552 A GB 950552A GB 721170 A GB721170 A GB 721170A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transverse
- unit
- stretches
- abutment means
- cable
- 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
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/18—Tracks
- B62D55/24—Tracks of continuously flexible type, e.g. rubber belts
- B62D55/253—Tracks of continuously flexible type, e.g. rubber belts having elements interconnected by one or more cables or like elements
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Ropes Or Cables (AREA)
- Tires In General (AREA)
- Road Paving Structures (AREA)
Abstract
721,170. Endless tracks for vehicles. CUTHBERTSON, J. A. April 16, 1952, No. 9505/52. Divided out of 721,141. Class 79(1). A flexible unit for a vehicle endless track comprises longitudinally spaced abutment means which are interconnected by a flexible tension member, one of the abutment means extending transverse across the entire width of the unit and the tension member being looped slidably around the transverse abutment means in a transverse direction to form looping lying parallel to the ground so that transversely spaced longitudinal stretches are formed between the abutment means and a transverse stretch is formed across the entire width of the unit and increase in tension in one longitudinal stretch is transmitted through the transverse stretch directly across the entire width of the unit to another longitudinal stretch, and the tension member being in a unitary manner enclosed in, and the abutment means being in a unitary manner embedded in, rubber to form the unit, and the transverse abutment means being so constructed as to facilitate the transmission of the increase in tension. The endless track is formed by abutting a series of the flexible units, adjacent units being interconnected by inner and outer plates and bolts passing therethrough, the outer plates carrying ground engaging spades and the inner plates each carrying a pair of sprocket engaging teeth as shown in Fig. 1 of Specification 721,141. The units may be arranged to leave say 1¢ inches longitudinally between adjacent plates. As shown in Figs. 5 and 6, each unit 1 comprises longitudinally spaced series of pulley wheels 10, one series being staggered relatively to the other. Passing sinuously around the pulleys 10 and forming the longitudinal stretches 9a is a multistrand wire cable 9 forming the flexible tension member, which may be replaced by nylon or other textile cable, the ends of the cable 9 being joined together at 9c to form the transverse stretch 9b. The cable 9 is in a unitary manner enclosed in, and the pulleys 10 in a similar manner embedded in, a rubber block 14, holes 13 being provided for the bolts. A transverse flexible supporting strip 12 of canvas or other semi-stiff material engages the inner sides of the stretches 9a to prevent sharp bending of the stretches. The strip 12 may be replaced by rubber when the track is to operate under light load. In another arrangement, canvas strips engage both the inner and outer sides of the stretches 9a. In a modification, Fig. 10, each unit 1 is formed with two longitudinally spaced pairs of pulley wheels 15, 16, which are engaged by the cable 9 with its ends joined at 9c, thus forming the stretches 9a and 9b.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB309748X | 1952-04-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB721170A true GB721170A (en) | 1954-12-29 |
Family
ID=10316006
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6087/49A Expired GB721141A (en) | 1952-04-16 | 1950-02-27 | Improvements relating to endless tracks for tractors and other vehicles |
GB9505/52A Expired GB721170A (en) | 1952-04-16 | 1952-04-16 | Improvements relating to endless tracks for tractors and other vehicles |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6087/49A Expired GB721141A (en) | 1952-04-16 | 1950-02-27 | Improvements relating to endless tracks for tractors and other vehicles |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH309748A (en) |
FR (1) | FR1070803A (en) |
GB (2) | GB721141A (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO142570C (en) * | 1976-02-18 | 1980-09-10 | Gravbergskovens Ak | DRIVE BELTS FOR VEHICLE AND BELT BELT SEGMENTS FOR SAME |
FR2486482B1 (en) * | 1980-07-08 | 1986-01-31 | Hutchinson Mapa | IMPROVEMENTS ON VEHICLE TRACKS |
US4645273A (en) * | 1985-09-09 | 1987-02-24 | Deere & Company | Endless track flexor having cord reinforced tensile load-carrying plate |
US5040282A (en) | 1987-05-14 | 1991-08-20 | Edwards, Harper, Mcnew & Company | Method of making a modular endless track drive system |
US4861120A (en) | 1987-05-14 | 1989-08-29 | Edwards, Harper, Mcnew & Company | Modular endless track drive system and methods of making, installing and repairing same |
US5005921A (en) | 1987-05-14 | 1991-04-09 | Edwards, Harper, Mcnew & Company | Endless track drive system |
US5511869A (en) | 1991-08-26 | 1996-04-30 | Edwards, Harper, Mcnew & Company | Replacement endless vehicle tracks |
IL102928A (en) | 1991-08-26 | 1996-03-31 | Edwards Harper Mcnew & Co | Replacement endless vehicle tracks |
US5368376A (en) | 1991-08-26 | 1994-11-29 | Edwards, Harper, Mcnew & Company | Replacement endless vehicle tracks |
JP5261761B2 (en) * | 2007-12-26 | 2013-08-14 | 独立行政法人 宇宙航空研究開発機構 | Crawler type traveling device |
-
1950
- 1950-02-27 GB GB6087/49A patent/GB721141A/en not_active Expired
-
1952
- 1952-04-16 GB GB9505/52A patent/GB721170A/en not_active Expired
-
1953
- 1953-02-12 FR FR1070803D patent/FR1070803A/en not_active Expired
- 1953-02-16 CH CH309748D patent/CH309748A/en unknown
Also Published As
Publication number | Publication date |
---|---|
GB721141A (en) | 1954-12-29 |
FR1070803A (en) | 1954-08-17 |
CH309748A (en) | 1955-09-15 |
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