Document M4jdRrLE4936wQjzKQ24G8N0y

DAVIS EQUIPMENT CO., INC. 55 Van Dam St., NEW YORK November 9> 1936. Dr. Willard F. Llachle, College of Medicine, University of Cincinnati, Cincinnati, Ohio. ?.!y dear Dr. Hackle: Having just returned to the office, I am immediately writing you most of the information you ashed for after our discussion last Thursday morning. We are pleased to quote you on 12 to 15 complete positive pressure hand driven blowers with the following equipment: 1 No. 1 No. 2 No. 1 No. 1 No. 4400 - 3291 - 3035 3036 1300-A Hand driven positive pressure blower (with manifold having two outlets). Mask and \"eb safety belt assembly (single inhalation tube over shoulder). 25 ft. lengths of 1" oil resisting hose. 50 ft. lengths of 1" oil resisting hose. Fibre Trunk. a price of $171.90 each net with standard red rubber mask parts -----or $174*40 each net with, white rubber mask parts. Tfith non-sparking hardware throughout, the price v/ould be $176.90 each net with standard red rubber mask parts and $179*40 each net with white rubber mask parts. You 7/ill notice I have been able to considerably reduce the price of these blowers under the standard price. You will be getting one add itional 25 ft. length of hose, or 100 ft. in all with each outfit. This was necessary as we can only discount complete outfits. In other words, you are getting 50 ft. more of hose than you would get with any of the velocity type blowers such as the sample we submitted to yuu. The prices quoted above should he confidential as far as the field is concerned, as it would be necessary in the event of future purchases by companies who see this equipment, for us to quote regular prices. Prices quoted are f.o.b. New York, and we shall be able to make partial shipment at once, and complete shipment in ten days. K& 0022460 University of Cincinnati November 9, 1936 2. With regard to specifications, the blower itself packed for shipment weighs 80 lbs. The trunk containing 100 ft. of hose, mask and web safety belt assembly (single inhalation tube) weighs 106 lbs. The dimensions of the trunk containing mask and hose are 25" x 25" x 15". For convenience in handling in the field, we have found it prefer able not to include the blower in a case, because of its weight and the space involved to house it. In the event that it were in a case, it would be necessary to remove it from the case anyway to operate it, as the crank handle rotates in the same direction as a bicycle peddle. Therefore, from the standpoint of space alone, I feel it would be advisable in yours as well as in previous in stances where we have supplied this equipment, to carry the blower separately. It can be easily operated standing on the ground and can be conveniently handled in remote locations. 7,re should be pleased If you so desired, to furnish covers of water proof canvas for the blowers while not in use. Blowers are equipped so that in the event you should ever find it 'necessary to motorize them to furnish air to more than two men, it could be done by simply adapting a clutch, motor and base to the hand driven unit, as you would receive it. T/ith regard to filters, we d`o not feel that you will require this equipment except perhaps inone or two locations. However, I did have some resistance tests run on the filter which v/e would supply you, in accordance with your request. At 85 liters per minute there was a presure drop on the filter of 7-1/2" of water. This resistance would be practically negligible when used with the positive pressure equipment in question. We will have the output tests at the end of 100 ft. of hose with filter attached, within the next couple of days. I certainly trust by this time you have found the claims I made for the Davis face piece justified. ?/e feel sure that your men will be pleased with thecomfort and service they give in field use. I hope, also by the latter part of this week to have the Information you want on theclearance between the impellers and the housing In this blower. T7e are getting this information direct from the RootsConnersville people. I am sending under separate cover today, the blower only, as we would supply It. RE" 0022461 H -P H 4 ' Hoveraber 9, 1936. University of Cincinnati * n. Mr. Davis was certainly pleased to learn of your own tests on the velocity type of equipment, and may I thank you very much for the time which you spent with me in discussing then. n the event you favor us with this order, we should be pleased o have our own men demonstrate the equipment in the field. f there is any further information we can supply you with from his end, please do not hesitate to call on us. My kindest regards. Very truly yours. n> v LT7B/HB Copy Regular Mail L. 77. Brendlen. P. S. I am also sending under separate cover, 25 copies each of our publications on "Classification of Physiological Action of Noxious Gases and Vapors" and "Classification of Respiratory Protective Devices KE' 0022462