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Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

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“Step Out From the Old to the New”

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“The Right to Information, The Right to Live”

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“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

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

BUREAU OF INDIAN STANDARDS

Headquarters:

Manak Bhavan, 9 Bahadur Shah Zafar Marg, NEW DELHI 110002

telephones: 331 01 31, 331 13 76 Telegrams: Manaksanstha ( Common to all Off ices )

Regionel Offices: Telephone

Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg, 331 01 31 NEW DELHI 110002

*Eastern : 1 /14 C. I. T. Scheme VII M, V. I. P. Road, I 331 13 76

36 24 99 Maniktola, CALCUTTA 700064

Northern : SC0 445-446, Sector 35-C, CHANDIGARH 160036

Southern : C. I. T. Campus, MADRAS 600113

I

21843 3 1641

t ::22: :f 41 2916

tWestern : Manakalava, E9 MIDC. Marol, Andheri ( East ), 6’ 32 92 95 BOMBAY 400093

Branch Offices:

‘Pushpak’, Nurmohamed Shaikh Marg, Khanpur,

I

2 63 48 AHMADABAD 380001 2 63 49

+,Peenya Industrial Prea 1st Stage, Bangalore Tumkur Road BANGALORE ii60068

38 49 55 38 49 56

Gangotri Complex, 5th Floor, Bhadbhada Road, T. T. Nagar, I

667 16 BHOPAL 462903

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GUWAHATI 781003 S-B-56C L. N. Gupta Marg ( Nampally Station Road ),

HYDERABAD 500001

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23 1083

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634 71 6 98 32

117/4 18 B Sarvodava Naggr, KANPUR 208005

Patliputra Industrial Estate, PATNA 800013 T.C. No. 14/l 421. University P.O.. Palayam

TRIVANDRUM 695035

1 21 68 76 21 82 92

6 23 05 . 16 21 04 1621 17 ,

inspection Offices ( With Sale Point ):

Pushpanjali, First Floor, 206-A West High Court Road, 2 51 71 Shankar Nagar Square, NAGPUR 440010

Institution of Engineers ( India ) Building, .1332 Shivaji Nagar, 5 24 35 PUNE 411005

*Safer Office in Calcutta is sf 5 Chowringhse Approach, P. 0. Princep 27 68 00 Strrot. Calcutta 700072

tSalrs Office in Bombay is at Novelty Chambers, Grant Road, 89 66 28 Bombay 400007

$Saler Office in Bangalore is at Unity Building. Narasimharaja Square, 22 36 71 Bangalore 560002

Reprography Unit, BIS, New Delhi, India