September 26, 1908 



HORTICULTURE 



421 



SPECIALTIES 



The Castle Tube and Pipe Coupling 



For Steam or Hot Water. 



This Coupling was devised to 

 afford a rapid and reliable method 

 of joining pipes, making at once a 

 I flexible expansion joint, as well as 

 affording the quickest and most 

 simple method of repairing a de- 

 fective or burst pipe. 



It is constructed with an internal ring 

 No. 3 into whk-h the ends of the pipes 

 No. 5-5 to be connected are inserted; in 

 the central line of the ring brass screws 

 No. 4 project to the interior sufficient to 

 prevent either pipe creeping further than 

 the certral line. On the outer surface two 

 heads No. 2-2 encircle the internal ring 



Patent Applied Fur. 

 Fig. 1. 



No. 3, with outer ends flanged down to 

 barely touch the pipe. These heads have 

 4 slotted lugs through which passes bolts 

 which by drawing together in screwing 

 up the nuts, pull the heads towards each 

 other. Between the flanges on the heads 

 No. 2 2 and the outer rim of ring No. 3 

 is a space No. 5-5, in which wick or 



Referring to Diagrams Below. 



other packing is inserted by pushing back 

 upon the pipe the heads No. 2-2 and 

 wrapping the pipe with sufficient packing 

 for the joint. When this is done, bolts 

 inserted, and nuts screwed up, the drawing 

 together of the heads compresses the 

 packing, making a tight joint between 

 the flanges of the heads and the outer 

 rim of the ring, at 

 the same time while 

 compressing the pack- 

 ing there, also forces 

 it down upon the 

 pipe, thereby making 

 a tight joint about the 

 same. Thus the pipe 

 can expand or con 

 tract in the interna 

 ring No. 3. In n<ing 

 a 3-inch boiler tu-l»e. 

 each pipe will have a 

 play of quite one hall' 

 inch. Pipes should be 

 cut to length giving 

 one Quarter i n c li 

 fjpace between end 

 of pipe and screws in 

 ring. 



In Fig. 2 the same 

 general arrangement is 

 shown. One head No. 

 2 is used; No. 1 is 

 a fitting by which 

 threaded pipe may be 

 screwed into it or in 

 case of T's, L's or 

 other fittings are to 

 be connected a nipple 

 can be used, one end screwed Into No. 1 

 and the other end into the fitting. In- 

 stead of using the internal ring as in Fig. 

 1, the part No. 1 is extended as shown 

 which produces same result; otherwise the 

 putting together Is the same as in Fig. 1. 

 To repair a defective pipe, that part 

 which demands repairs can be cut off with 



a hack saw, and a piece of the proper 

 length inserted into the internal ring 

 No. 3, first backing out the screws No. 1. 

 so that the ring can be slipped upon the 

 pipe, the heads slipped over the pipe and 

 after winding on packing the same pro- 

 cedure as in putting up new pipe followed. 

 This will be found the most expeditious 

 manner yet devised for repairing piping. 



Patent Applied For. 

 Fig. 2. 



By the use of these couplings old boiler 

 tubes can be utilized economically and with 

 a surety of reliable operation which has 

 not heretofore been possible. No thread- 

 ing of such thin tubes would withstand 

 the wear and tear of expansion and con- 

 traction aud rust or packed fittings cannot 

 be depended upon. 



U be Forwarded at 50c each. Estimates and Prices for Circulator or Couplings upon Application. 



\ Heating' Engineers 



T, BOSTON, MASS. 



