Chap. 0620 An Act making certain provisions of law relating to compressed air tanks inapplicable to certain receptacles used in the lifting of automobiles. Be it enacted, etc., as follows: Section 34 of chapter 146 of the General Laws, as amended by section 1 of chapter 319 of the acts of 1938, is hereby further amended by adding at the end the following sentence : - This section shall be inapplicable in case of the installation or use of a receptacle temporarily holding oil and air and used for the purpose of lifting automobiles, but only if said receptacle is approved by the board as being of a type which conforms to recognized standards of engineering practice as such standards apply to receptacles designed for such purpose and as meeting the requirements of regulations referred to in section thirty-five which regulations are hereby made applicable to such receptacles for this purpose. Approved June 28, 191+1.