44 



HARDWOOD RECORD 



may be depended upon to be exectly as represented. 

 The comiiany's plant at Grand IJapids, Mich,, is a 

 model of up-to-dateness, as it is improved and 

 enlarged as often as its business requires in 

 compliance with the company's policy of al- 

 ways having the best equipment in its line. 



Of Interest to Glue Users 



One of the most important problems that con- 

 fronts the woodworking shop today is the ques- 

 tion of glue handling. All manufacturers and 

 practical users of glue agree that when kept 

 under heat for long periods of time glue loses 

 its strength and deteriorates generally, and this 

 lessening in strength takes place even at the 

 lowest temperature at which glue can be used 

 for practical purposes. It is claimed that glue 

 manufacturers would not be able to sell their 

 product if they applied one-tenth of the heat 

 to their glue that users have been wont to do. 



The old method of keeping glue liquid by sul)- 

 jecting it to constant beat in a supply kettle 

 has long been recognized as faulty, particularly 

 as it was impossible to overcome the deteriora- 

 tion of the fiber substance or main strength of 

 the glue. Under the old method it was neces- 

 sary to keep a quantity of glue under heat, and 

 the glue not only lost strength by remaining 

 under heat for such long periods but also was 

 lessened in quantity through evaporation. 



In October, 190S, Charles M. Zimmerman in- 

 vented the Instantaneous Glue Filtering Con- 

 verter, which is now manufactured by the In- 

 stantaneous Glue Converter Company, 221-22:3 

 West Third street, Cincinnati, O. This con- 

 verter, consisting of a single small apparatus, 

 neat, clean and occupying little space, has been 

 installed by many prominent concerns through- 

 out the country, and is rapidly superseding the 

 antiquated method which required the use of a 



number of messy kettles. Two patents have 

 been granted on this apparatus and four im- 

 proved patents are now pending. 



The construction and operation of this con- 

 verter are very simple. It consists of an inner 



THE IXSTA.NTAXEOUS GLUE CONVERTER 



WHICH REPLACES ALL THE KETTLES 



USED IN "THE OLD WAY" 



\essel with a perforated bottom which fits into 

 and extends about half way down into the outer 

 vessel. Below this inner vessel is a catch basin 

 into which the glue flows as it melts and from 

 which it flows on out through the open faucet. 

 There is no stop to the faucet and all glue put 

 into the converter melts and flows out. Glue is 

 melted at the rate of a quart a minute or one 

 gallon every three minutes. 



The melting is caused by a moist heat pro- 

 duced from a greatly reduced volume of steam, 

 the reduction made being due to a reducing 

 steam trap attached to the converter. The con- 

 densation from steam takes place in the outer 

 vessel and passes out at the bottom of the con- 

 verter while the moist heat from the steam sur- 

 rounds the glue which melts immediately and 

 fiows out through the open faucet. 



By means of this process the glue comes out 

 in the same proportion of water and glue in 

 which it is soaked, temperature is always the 

 same, evaporation is entirely eliminated and 

 there is not the slightest deterioration in the 

 strength of the glue. The apparatus is made of 

 copper with brass iittings, and as the glue 

 merely passes through it it will last indefinitely. 



A brass filter is provided in the catch basin 

 which filters the glue as it passes through the 

 converter so that it is always clean and there 

 are never annoying particles of dirt and chips 

 of wood in the glue which comes through this 

 apparatus. 



The Instantaneous Glue Converter Company 

 also manufactures glue testing apparatus for 

 testing glue in solution and evaporation, to de- 

 termine the amount of dry glue in solution or 

 the amount of water involved in the solution. 

 The price the company puts on this article is 

 not for profit, it claims, but for the purpose of 

 givin,g glue users an insight intr) existing con- 



•nil-: III. 11 WAY or hamii.im; gia i: 



