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है”ह”ह
IS 1976 (1976): Rotary Paddy Weeder, Manually-Operated [FAD21: Farm Implements and Machinery]
IS :1976-1976
Indian Standard ’ Reaffirmed I982 ’
SPECIFICATION FOR ROTARY PADDY WEEDER,
MANUALLY-OPERATED
( Second Revision )
First Reprint SEPTEMBER 1989
UDC 631.315.4:633.18.03
@ Copyright 1977
BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARC
NEW DELHI 110002
Gr 2 March 1977
xxxx2009
IS:1976-1976
Indian Standard SPECIFICATION FOR
ROTARY PADDY WEEDER, MANUALLY-OPERATED
( Second Revision ) Farm Power and Machinery Sectional Committee, AFDC 41
Chairman
SHRI P. JOHN ZACHA~IAH
Rtprtscnting
Ministry of Agriculture and Irrigation ( Department of Agriculture )
Member,
DIRFXTOR Tractor Training & Testing Station ( Ministry of Agriculture and Irrigation ), Budni
SENIOR TEST ENGINEER ( Alternate ) DIRI.XTOR Tractor Training Centre ( Ministry of Agriculture
and Irrigation ), Hissar A~RICULTUI~AL IMPLEMENTS
SPECIALIAT ( Alter/u& ) Burtr R. C. DUWA Directorate of Military Farms, Quartermaster
General’s Branch, Army Headquarters Snnr SHAHID ALI ( Alternafe )
SHRI P. D. GUNE Kirloskar Brothers I.imitcd, Sangli SHRI S. K. DEO ( Alfernafe )
SIIRT R. K. GIJPTA State Farms Corporation of India Ltd, New Delhi SHKI M. R. SHARMA ( Alfernnte )
SI~III V. P. S. KASHYAP Department of Agriculture, Government of Haryana, Chandigarh
SIXIII M. M. M~HTA Escorts Limited, Faridabad Sum BIPUAMAN SIN~II ( Alfemate )
SHRI H. M. MIJ~TA International Tractor Company of India I,imited, Bombay
Srrnr M. V. VENKATESWARAN ( Alternate ) SHHI R. NAXAYANAYWAMY Tractors and Farm Equipment Limited, Madras
Srrtrr N. S. SWAMINAWAN ( Afternafc ) SUHI K. NATAI~AJAN Tamil Nadu Agro-Enginerring and Service Co-
operative Federation Ltd, Madras
DR T. P. OJHA Indian Institute of Technology, Kharagpur DIL B. S. PATHAK Punjab Agricultural University, I.udhiana
Da S. R. Vtcn~a ( Alternate )
( Continued on page 2 )
@ Copyright 1977
BUREAU OF INDIAN STANDARDS
This publication is protected under the Indian Copyright Acl ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the publisher shall be deemed to be an infringement of copyright under the said Act.
IS81976- 1976
( Continurdfrom pap 1 )
Memb crs Reprcscntin,q
SHRI E. C. PETER H;trylna Agro-Industries Corporation T.imited, Chantligarh
SHRI K. RAMAEILISHNA RAO Directorate General of Technical Development ( Ministry of Industry ), N?w Delhi
SHHI T. K. BHASILARA VAI~MA ( Alternate) Sasr 0. D. SANGAR Directorate Cenwal of Supplies & Disposal,
New Delhi SHRI A. R. SEN Development Commissioner ( Small Scale Industries )
( Ministry of Industry ), Nrw Delhi SHKI S. BANDOP~DHYAY ( Alternate )
DH B. S. SIROHI Indian Agricultural Rcsearc 11 Institute ( IC.\R ), New Delhi
S-1 S. K. KHANNA ( A/female ) SHSI C. S. SRIDHARAN Indian Council of Agricultural Reseakh, Nkw Delhi SHBI T. PIJRNANA~DAM, Director General, IS1 ( I&-n&o Member )
Deputy Director ( Agri & Food )
SHRI R. N. SHARMA
Assistant Director ( i\gri & Food ), ISI
2
IS : 1976 - 1976
Indian Standard SPECIFICATION FOR
ROTARY PADDY WEEDER, MANUALLY-OPERATED
( Second Revision )
0. FOREWORD
0.1 This Indian Standard ( Second Revision ) was adopted by the Indian Standards Institution on 31 December 1976, after the draft finalized by the Farm Power and Machinery Sectional Committee had been approved by the Agricultural and Food Products Division Council.
0.2 Following the adoption of the improved method of paddy
cultivation, by which the paddy crop is sown in rows, the rotary paddy
weeder has assumed significance as an inter-cultivation equipment. This type of weeder has been found especially suitable for controlling the weeds.
0.3 This standard was first published in 1961 and subsequently revised in 1969. The present revision incorporates improvements found necessary in the light of modifications suggested by the testing authorities and manufacturers.
0.3.1 The figure given in the standard serves only as an illustration and should not be considered as suggestive of any standard design.
0.4 While revising this standard, the Committee considered the question of prescribing performance requirements but it was felt that reliable data on the basis of the standardized methods of test as given in IS : 7927-1975+ on a larger number of paddy weeders should be collected before the limits of performance characteristics could be prescribed.
0.5 In the preparation of this revision, assistance has been taken from JIS B 9 103-1959 Man power rotary paddy field weeder, issued by the Japanese Standards Association.
0.6 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960t. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
*Method of field testing for manually-operated paddy wrrder. tRules for rounding elf numerical vah~ ( rcuirtd ).
IS: 1976 - 1976
1. SCOPE
1.1 This standard prescribes the material, sizes and other requirements of manually-operated rotary paddy weeder.
2. TERMINOLOGY
2.0 For the purpose of this standard, the following definitions shall
apply.
2.1 Float ( Sleigh ) -A component in front of the weeding roll which ensures an easy sliding motion during operation through better Aoatation of the weeder.
2.2 Framc- The part that holds float and front and rear weeding rolls in position and to which the yoke of the handle is attached.
2.3 Weeding Roll - A revolving assembly with finger-like projections or tines which performs the operations of weeding and submerging the weeds in water.
3. MATERIAL c
3.1 The material for the manufacture of different components of the weeder shall be as given in co1 3 of Table 1 and should, as far as possible, conform to the Indian Standard and the grade of the material given in co1 4 and 5 of Table 1.
4. SIZE
4.1 The paddy weeder shall have nominal width of 80,90, 100 or 150 mm (see Fig. 1 ). The tolerance on the width shall be f 2 percent. The size of the weeder shall be declared by the manufacturer.
5. CONSTRUCTIONAL REQUIREMENTS
5.1 Weeding Roll-There shall be two weeding rolls, the front and the rear.
5.1.1 7incs - Tines shall be well-shaped and slightly curved and shall be reinforced by pressing. Th e extended portion of the tines shall be rigidly fixed to the rotary bearings (see 5.1.3). The tines shall be manufactured from the sheet with a minimum thickness of 1.25 mm. The length of the tines (see Fig. 1 ) for front and rear weeding rolls shall be not less than 80 and 95 mm respectively.
5.1.2 Axle-The axle shall be not less than 6 mm in diameter.
5.1.3 Bearings -There shall be two sets of bearings, the fixed and tile rotary for each weeding roll. The rotary and fixed bearings if made of steel shall be not less than 1.6 mm and 3 mm thick respectively. The thickness of cast iron bearings shall be not less than G mm. of the bearings shall be not less than 10 mm.
The length
4
D VIEW AT A
ANGLE RESJLATOF OF FLOAT-, ~\
-FRONT WEED’LIG RDLL PEhR WEED:hG ROLL
FIG. 1 ROTARY PADDY WEEDER, MANUALLY-OPERATED
IS:1976-1976
TABLE 1 MATERIAL FOR DIFFERENT COMPONENTS OF WEEDER
SL CDXlPnNENT
No.
(1) (2)
i) Tine
ii) Float
iii) Frame
iv) Axle
v) Arm pircc or yokr
vi) Angle rrgulatol
vii) Washer
viii) Fixed bearing
ix) Rotary bearing
x) Handle
xi) Handle grip
xii) Wing nut
( Clnrrse 3.1 )
h’fATKILl~\I. AI’PI.I~‘AllLI~ r.\lDlAN STANDARII
(3) (4)
Hot-rollrd carbon IS : 1079-1973* sreel SllCY~l
do do
hlild stt~l IS : 226-1975)
do do
Cl~l do
do do
do do
Cast ircm IS : “IO-l!nn:
Mild m-f IS : 226-1975t
do tl1,
M’ootl
Mild steel
IS . 399~19635 j IS : 226-1975f 11s : 3601-1966)J
Rubbrr -
Plastic -
Cast iron IS : 210-1970~
Brass casting IS : 292-1961~
h4ild strel IS : 226.1975t
GRADE
(5) St 42-1079
do
Fe 410-s
do
do
do
do
Gradr 20
Fr 410-S
do
Fe 410-S -
-- Fe 410-S
-
-
-
Grade 20 -
Fe 410-S
*Specification for hot rolled carbon steel sheet and strip ( third revision ). tSpecification for structural steel ( standard quality ) (Jfih reuision ). fSpecification for grey iron castings ( second rcuision ). gclassification of commercial timbers and their zonal distribution ( r&cd ). If+ecification for strrl tubes for mechayical and general engineering purposes. DSpecification for brass ingots and castmgs ( teuiscd ).
5.1.4 Washer-Washers (set 1s : 2016-1966*) shall be provided on both sides of the rolls between the fixed bearings and the frame.
5.2 Float ( Sleigh ) - The float shall be made of the sheet not less than 1-O mm thick and shall be attached to the front side of the frame. The design of the float shall be such as to enable adjustment of its angle.
5.3 Frame-The frame sball be able to hold the float, the front and
IS : 1976 - 1976
rear weeding rolls and an angle regulator. The size of steel flat used shall be minimum 20 x 3 mm. turned’slightly upward.
The front part of the frame shall be
5.4 Arm Piece ( Yoke) - An arm piece shall be attached on both sides of the front weeding roll. The size of steel flat used shall be minimum of 20 X 3 mm.
5.5 Angle Regulator - It shall be made of steel flat of minimum size 16 X 3 mm and shall be.attached to both sides of rear weeding roll. It shall be SO designed that the handle grip has a clearance of 900 to 1 100 mm from the ground. A wing nut (see Type A size M3 of IS : 2636-1972* ) shall be provided.
5.6 Handle - Well-seasoned hard wood free from knots, or steel flat or tube shall be used m the manufacture of handle. If fiats are used, the size of flat shall be minimum 25 x 6 mm. In case tubes are used, the outer diameter shall be minimum 22.5 mm. The handle shall be adjustable and shall be attached to the arm pieces. The diameter of the grip shall be between 25 and 30 mm.
6. WORKMANSHIP AND FINISH
6.1 The welding and riveting of the various parts of the weeder shall be satisfactory in al1 respects. The welds shall not be porous. ~11 welded joints shall be well-dressed and smoothly finished.
6.2 The weeder shall be free from cracks, dents and other similar defects and shall be finished smooth.
6.3 The exposed metallic parts shall be suitably painted. The axles and bearings shall be coated with rust-proof grease prior to assembly. In case wood is used for handle and grip, it shall be given a coat of varnish.
6.4 The weeding rolls shall rotate smoothly on bearings.
7. MARKING AND PACKING
7.1 Marking - The weeder shall be marked with the following particulars.
a) Manufacturer’s name and recognized trade-mark, if any;
b) Size; and
c) Batch or code number.
*Specification for wing nuts (Jnl rrvision ).
7
IS : 1976 - 1976
7.1.1 The marking shall be done on a metallic plate rigidly fixed on the handle.
7.1.2 Each paddy weeder may also be marked with the IS1 Certification Mark.
NOTE -The use of the IS1 Certification Mark is governed by the provisions of the Indian Standards Institution ( Certification Marks ) Act and the Rules and Regu- lations made thereunder. The IS1 Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well-defined system of inspection, testing and quality control which is devised and supervised by IS1 and operated by the producer. IS1 marked products are also continuously checked by ISI for conformity to that standard as a further safeguard. Details of conditions under which a licence for the use of the IS1 Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution.
7.2 Packing -The weeder shall be packed as agreed between the purchaser and the supplier for safe handling in transit.
8. SAMPLING FOR LOT ACCEPTANCE
8.1 Unless otherwise agreed between the purchaser and the supplier, the sampling of the weeders for lot acceptance shall be done in
accordance with 3 of IS : 7201.1974*.
*Method of sampling of agricultural machinery and tractors.
8
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Headquarters:
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