IS 991 (1964): Spoons, Brass and Nickel Silver [MED 33: Mechanical Engineering]

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18:991-1964 (Reaffirmed 2008) Indian Standard SPECIFICATION FOR SPOONS, BRASS AND NICKEL SILVER ( Revised )

First Reprint SEPTEMBER 1982

UDC 672.76:669.35.5

© Copyright 1964 INDIAN STANDARDS INSTITUTION MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELH I 110002 Gr 3 October 1964 AMENDMENT NO. 1 MAY 1970 TO IS : 991-1964 SPECIFICATION FOR SPOONS, BRASS AND NICKEL SILVER ( Revised )

Alteration ( Page 8, clause 7.2 and Table 1 ) — Substitute the following for the existing clause 7.2 and Table 1: 7.2 Beading Test — The spoon shall be held rigidly from the extreme end of the shank and supported in the middle of the overall length in such a way that it is approximately horizontal. A load as given below shall then be applied at the extreme end of the bowl for two minutes and then removed. No deflection or permanent set shall be observed: Type of Spoon Load kg Solid handle 2.5 Pressed handle, radiused 2.5 Pressed handle, flat 1.5

( CPDC 6 )

Printed as Standard Printing Works, New Delhi,ISI, India IS: 991 1964 Indian Standard SPECIFICATION FOR SPOONS, BRASS AND NICKEL SILVER ( Revised )

Cutlery Sectional Committee, CPDC 6

Chairman Representing CoL V. N. PILLAY Chief Inspectorate of General Stores [ Ministry of Defence ( DGI ) ], Kanpur Members SHRI B. C. THADANI ( Alternate to Col V. N. Pillay)

SHRI AFTAB RAI In personal capacity ( RaI ξ Sons Private Ltd.t New Delhi ) SHRI S. D. AGRAWAL Krudd Industries Ltd., Howrah SHRI R. L. DHIMAN ( Alternate ) SHRI A. P. GOEL Goel Steel Works, Meerut SHRI JAI CHAND Messrs. Hakimrai Jaichand, Bombay SHRI YOGI RAJ ( Alternate ) SHRI A. R. KAPOOR Directorate of Industries, Government of Uttar Pradesh SHRIMATI LILAVATI MUNSHI All India Women's Central Food Council ( Regd. ), Bombay SHRIMATI B. TARA BAI ( Alternate ) SHRI L. C. NIRULA The Federation of Hotel & Restaurant Associations of India,. New Delhi SHRI RAM PERSHAD ( Alternate ) SHRI M. S. OBEROI Oberoi Hotels ( India ) Private Ltd., Delhi SHRI T. R. OBEROI ( Alternate ) SHRI ASHWANI KUMAR PASRICHA Krishan Chancf Bajaj & Co., New Delh KUMARI T. E. PHILIP Institute of Catering Technology & Applied Nutri tion, Bombay SHRI P. L. SAHGAL Office of the Development Commissioner, Small Scale Industries ( Ministry of Industry ) SENIOR COMMERCIAL OrncKR Railway Board ( Ministry of Railways) ( CATERING ) L T COR P. K. SHARMA Indian Navy SHRI B. K. THAKOOR Thakoor Metal Industries, Bombay ( Continued on page '2 )

INDIAN STANDARDS INSTITUTION MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELH I 110002 IS : 991 - 1964

( Continued from page 1 ) Members Representing SHRT G. D. THAKOOR The Oriental Metal Pressing Works Private Ltd., Bombay SHRI J. E. YORKE ( Alternate ) SHRI A. B. RAO, Director, ISI ( Ex-officio Member ) Deputy Director ( Consumer Products ) Secretary SHRI M. G. KRISHNA RAO Extra Assistant Director ( Eng ), ISI

Table Cutlery ( Flat Ware ) Subcommittee, CPDG 6 : 1

Convener SHRI JAI CHAND Messrs. Hakimrai Jaichand, Bombay Members SHRI YOGI RAJ ( Alternate to Shri Jai Chand ) SHRI AFTAB R A I In personal capacity ( Rai & Sons Private Ltd., New Delhi ) CATERING SUPERINTENDENT Railway Board ( Ministry of Railways ) SHRIMATI BABIBEN MOOLJI All India Women's Central Food Council ( Regd.), DAYAL Bombay JOINT HONORARY SECRETARY ( Alternate ) SHRI ASHWANJ KUMAR PASRICHA Krishan Chand Rajaj & Co., New Delhi KUMARI T. E. PHILIP Institute of Catering Technology & Applied Nutri- tion, Bombay SHRI P. L. SAHGAL Office of the Development Commissioner, Small Scale Industries ( Ministry of Industry ) SHRI G. D. THAKOOR The Oriental Metal Pressing Works Private Ltd., Bombay SHRI J. E. YORKE ( Alternate )

2 IS: 991-1964 Indian Standard SPECIFICATION FOR SPOONS, BRASS AND NICKEL SILVER ( Revised )

0. FOREWORD 0.1 This Indian Standard ( Revised ) was adopted by the Indian Standards Institution on 24 August 1964, after the draft finalized by the Cutlery Sectional Committee had been approved by the Consumer Products Division Council. 0.2 This standara was first published in 1957 and was one of a series of Indian Standard specifications on table cutlery. Revision of the series has been taken up on account of the necessity to metricize and also to avoid such details as will hinder the improvement of design. In this revised standard, soup spoons have also been included while egg spoons, for which the demand is negligible, have been omitted. Other standards in the series arc:

IS : 990-1964 Specification for spoons, stainless steel ( revised ) IS : 992-1964 Specification for forks ( table, fish, pastry and serving ), stainless steel ( revised ) IS : 993-1964 Specification for forks ( table, fish, pastry and serving ), brass and nickci silver ( revised ) IS: 994-1964 Specification for butter knives and fish knives ( revised ) IS: 995-1964 Specification for table knives, dessert knives and fruit knives ( revised )

0.3 This standard deals with the requirements for spoons made of brass and nickel silver. Designs other than those covered by this standard are also popular with certain organizations to suit aesthetic requirements. In such cases, it is recommended that the spoons may be made according to the designs of individual organizations but other provisions of this standaid shall apply to guide the manufacture and purchase. An important aspect of table cutlery is that the different items in a set, such as spoons, forks and knives should match in shape and appearance. This factor is to be borne in mind by the manufacturers when supplying cutlery in sets.

3 IS: 991-1964

0.4 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, express- ing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the spcci6ed value in this standard.

1. SCOPE 1.1 This standard covers the requirements for the following types of spoons made of brass or nickel silver: a) Serving spoon, large; e) Coffee spoon; b) Serving spoon; f) Soup spoon; c) Dessert spoon; g) Mustard spoon; and d) Tea spoon; h) Salt spoon.

2. MATERIAL 2.1 The brass used in the manufacture of spoons shall conform to Grade Bs 60A or Bs 60B as specified in IS : 422-1959† or to Grade 3 as specified in IS : 292-1961 ‡. 2.2 The nickel silver used in the manufacture of spoons shall conform to Grade NS 10 or NS 20 as specified in IS: 2283-1962§ or to Grade CuNi20Zn22 or CuNil5Zn22 or CuNil0Zn27 as specified in IS : 2451-1963#.

3. SHAPES AND DIMENSIONS 3.1 The spoons shall conform to the shapes and dimensions given in Fig. 1 to 4. 3.1.1 The spoons may have shapes and dimensions other than those given in this standard, subject to agreement between the manufacturer and the purchaser. The spoons shall, however, conform to other provisions laid down in this standard. 3.2 The design of the handles of spoons shall be as agreed to between the manufacturer and the purchaser. When spoons, forks and knives are required to be supplied in sets, the design of the handles and the general appearance of the items in a set shall match.

*Rules for rounding off numerical values ( revised ). †Spccification for brass sheet and strip for the manufacture of utensils. ‡Specification for brass ingots and castings ( revised ). §Specification for nickel silver sheet and strip for general purposes. #Specification for nickel silver ingots and castings for cutlery and hollow-ware. 4 IS: 991-1964

PRESSED HANDLE. FLAT

PRESSED HANDLE, RADIUSED

SOLID HANDLE

l SIZE L l a h s H Pressed Solid Type Type | Serving spoon, large 275 90 54 16 28 20 1.60 1.25

Serving spoon 210 70 45 12 18 18 1.25 0.80

Dessert spoon 180 62 40 11 16 15 1.25 0.80

Tea spoon 133 46 30 10 13 13 0.90 0.80

Coffee spoon 110 36 22 6 11 10 0.90 0.80 All dimensions in millimetres. Fig. 1 SERVING, DESSERT , TEA AND COFFEE SPOONS 5 IS: 991-1964

All dimension s in millimetres FlG. 3 MUSTARD SPOON 6 IS : 991 - 1964

All dimensions in millimetres.

FIG. 4 SALT SPOON 4. MANUFACTURE 4.1 The spoons shall be forged, pressed or cast to shape in one piece. The forged spoon shall have a solid handle and the pressed spoon shall have a pressed handle. The pressed handle may be suitably radiused to provide necessary stiffness. 5. WORKMANSHIP AND FINISH 5.1 Workmanship — The spoons shall be free from burrs, seams, cracks or other manufacturing and surface defects. All edges shall be well rounded or chamfered. The overall shape of the spoons shall be pleasing and well proportioned. The handle and the bowl shall be in good alignment. The spoons shall be finished smooth and polished bright all over. 5.2 Finish — Spoons made from Grade NS 20 or Grade CuNi20Zn22 of nickel silver shall be supplied unplated unless otherwise specified by the purchaser. Spoons made from brass and other grades of nickel silver shall be supplied in any one of the following finishes as may be specified by the purchaser: Finish Minimum Thickness a) Nickel 15 micions b) Nickel and chromium Nickel 15 microns, and chromium 0.5 micron c) Silver 40 microns 7 IS:991-1964 5-2.1 The plating shall conform to IS: 1068-1958* in the case of nickel and chromium plating, and to IS: 1067-1958† in the case of silver plating. 6. DESIGNATION 6.1 The designation of a spoon shall indicate: a) name and material, b) type of handle, and c) number of this standard. Example: A serving spoon made of nickel silver with solid handle shall be designated as: Serving Spoon, Nickel Silver, Solid Handle, IS : 991 7. TESTS 7.1 Sampling — The number of spoons to be selected from a lot for ascertaining conformity to this specification shall be as agreed to between the manufacturer and the purchaser. A suitable sampling scheme and criteria for conformity for spoons are given in Appendix A. 7.2 Bending Test — The spoon shall be held rigidly from the extreme end of the shank and supported in the middle of the overall length in such a way that it is approximately horizontal. A load as given in Table 1 shall then be applied at the extreme end of the bowl for two minutes and then removed. The permanent deflection shall be measured after removal of the load. It shall not exceed the values given in the table.

TABLE 1 BENDING TEST LOAD AND PERMISSIBLE PERMANENT DEFLECTION FOR SPOONS

Load Permanent Load Permanent Deflection Deflection kg mm kg mm Serving spoon, large 2 . 5 8 1.5 8 Serving spoon 1.5 8 0.8 8 Dessert spoon 1.5 8 0 . 8 8 Tea spoon 1.0 8 0.4 5 Coffee spoon 1.0 8 0.4 5 Soup spoon 1.5 8 0 . 8 8 Mustard spoon 1.0 8 0.4 5 Salt spoon 1.0 8 0.4 5

*Specification for copper, nickel and chromium electroplated coatings. †Specification for commercial silver-plating.

8 IS:991-1964 8. MARKING 8.1 Each spoon shall be legibly and indelibly stamped on the underside of the handle with the manufacturer's name, initials or trade-mark. The year of manufacture may also be stamped if desired by the purchaser. The material and finish shall also be indicated as follows: Symbol Material and Finish NSNC Nickel silver, nickel and chromium plated NSS Nickel silver, silver plated NSN Nickel silver, nickel plated NS Nickel silver BN Brass, nickel plated BNC Brass, nickel and chromium plated BS Brass, silver plated 8.1.1 The spoons may also be stamped with the ISI Certification Mark. NOTS — The use of the ISI Certification Mark is governed by the provisions of the Indian Standards Institution ( Certification Marks ) Act and the Rules and Regulations made thereunder. The ISI 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 ISI and operated by the producer. ISI 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 ISI Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution.

9. PACKING 9.1 The spoons shall be wrapped in soft tissue paper or wax paper and packed in cartons. The number of spoons to be packed in one carton shall be at the discretion of the manufacturer. The cartons shall bear the type and number of spoons packed, the name of the manufacturer and the country of manufacture. APPENDIX A (Clause 7.1) SAMPLING SCHEME AND CRITERIA FOR CONFORMITY FOR SPOONS A-l. SCALE OF SAMPLING A-l.l Lot — In any consignment, all the spoons of the same type of handle, shape and size manufactured from the same material under relatively

9 IS:1991 - 1964 similar conditions of manufacture shall be grouped together to constitute a lot A-1.2 For ascertaining the conformity to the requirements of this specification, the tests shall be conducted separately for each lot. A-1.3 The number of spoons to be selected from a lot for ascertaining conformity with the requirements of this specification shall be according to col 2 of Table 2. The spoons in the sample shall be selected at random from the lot. If the spoons are packed in cartons, as a first step at least 25 percent cartons shall be selected at random and then from each selected carton,, equal number of spoons shall be taken out at random so as to make the required sample size.

TABLE 2 SCALE OF SAMPLING AND PERMISSIBLE NUMBER OF DEFECTIVES

No. or SPOONS IN A LOT

(1) (2) (3) (4) (5) U p to 50 5 0 2 0 51 „ 150 13 1 4 0 151 „ 500 32 3 6 0 501 „ 1 000 50 5 8 0 1 0 0 1 „ 3 0 0 0 80 7 12 1 3001 „ 10000 125 10 16 1 10001 and above 200 14 20 2

. A-2. NUMBER OF TESTS AND CRITERIA FOR CONFORMITY A-2.1 The spoons selected at random according to A-1.3 shall be examined for the requirements of 3.1 and 5.1.A spoon failing to satisfy any one or more of these requirements shall be regarded as defective. The lot shall be considered as conforming to the requirements of 3.1 and 5.1 if the number of defective spoons in the sample does not exceed the number given in col 3 of Table 2. A-2.2 If the lot conforms to the requirements of 3.1 and 5.1, a sub-sample of size given in col 4 of Table 2 shall be taken from the spoons selected as in A-1.3. Each of the spoons in the sub-sample shall be tested for the requirements of 5.2 and 7.2. A spoon not satisfying any one or more of the requirements of 5.2 and 7.2 shall be regarded as defective. The lot shall be considered to conform to the requirements of 5.2 and 7.2 if the number of defectives in the sub-sample does not exceed the number given in col 5 of Table 2.

10 INTERNATIONAL SYSTEM OF UNITS (SI UNITS)

Base Units

QUANTITY UNIT SYMBOL Length metre rn Mass kilogram kg Time second S Electric current ampere A Thermodynamic kelvin K temperature Luminous intensity candela cd Amount of substance mole mol Supplementary Units

QUANTITY UNIT SYMBOL Plane angle radian rad Solid angle sreradian sr Derived Units QUANTITY UNIT SYMBOL DEFINITION Force newton N I N = 1 kg.m/s2 Energy joule J 1 J = 1 N.m Power watt W 1 W = 1 J/s Flux weber Wh 1 Wb =. 1 V.s Flux density tesla T 1 T = 1 Wb/m2 Frequency hertz Hz 1 Hz = 1 c/s (s-2) Electric conductance siemens S 1 S = 1 A/V Electromotive force volt V 1 V = 1 W/A Pressure, stress pascal Pa 1 Pa = I N/m2

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