October i, 1903.] 



THE INDIA RUBBER WORLD 



23 



RUBBER FACTORY APPLIANCES. 



THE PIERCE UPPER CALENDER. 



THE superintendent of the rubber factory of L. Candee & 

 Co. (New Haven, Conn.), Mr. John H. Pearce, is already 

 well known to the rubber manufacturers of the world through 

 his inventions, particularly in the line of calenders for shoe 

 work. His latest production, a five roll machine, designed to 

 save waste in sheet goods, that are, after coating, cut into 

 shapes that do not utilize all of the surface spread, is shown in 

 the accompanying outline drawings. In this instance the cal- 

 ender is adapted to the production of shoe uppers. The plan 



pursued is to spread the 

 plain sheet to the thick- 

 ness desired, and then 

 run it through two sup- 

 plementary rolls, together 

 with the fabric. These 

 rolls are fitted with male 

 and female dies, which set 

 the sheet of rubber upon 

 the fabric in certain pat- 

 terns only. The waste 

 rubber between the dies 

 either follows the roll, or 

 if it adheres to the fabric 

 is easily stripped off. The 

 process should result in 

 quite a saving and would 

 appear to be perfectly 

 practical. Mr. Pearce has 

 taken out a United States 

 patent on the calender 

 (No. 720,28i)and assigned 

 it to Henry Stuart Hotch- 

 kiss, of New Haven. 



THE PROBERT "SPIDER 



PRESS." 



For ordinary everyday 



Spider Press " is about as 



The illustration is taken 



from a photograph of one 



20X 20 inches in size. It 



is light— weighing but 



1480 pounds — and strong, the tie rods being of hammered 

 steel, and as rapid as is consistent with the power, the pitch of 

 the steel screw being two threads to the inch. The lower end 

 of the screw is fitted with an anti-friction stop in the oil well in 

 the top of the upper platen. [Excelsior Machine Works, 

 Akron, Ohio.] 



AUTOMATIC CUTTER FOR INSULATING TAPE. 

 A machine for cutting tape — either pure, gummed, cloth 

 surfaced, or non-gummed cloth — which operates automatically, 

 is shown in the accompanying illustration. As is usual, the 

 material to be cut is first wound tightly on a gummed wooden 

 or steel mandrel, and may be put into the roll 1 meter [ = 39.37 



THE PROBERT PRESS. 



mold work in a small factory the 

 useful a mechanism as can be found. 



SIDE VIEW. 



ARRANGEMENT OF THE ROLLS. 

 THE PIERCE UPPER CALENDER. 



CUTTER FOR INSULATING TAPE. 



inches] in length to about 200 millimeters [=about 7.9 inchesj 

 in width. The extreme ends of the roll are gummed, so that it 

 is impossible for the roll to unwind during the cutting. The 

 roll after being placed in the machine comes in contact with a 

 knife to which is attached a lever, the roll turning to the left 

 hand — that is, in the opposite direction to that of the usual 

 lathes. In action the lever and the knife moves forward by 

 means of an eccentric and is released and set back by means of 

 a spring. The feed is accomplished through an accurately 

 spaced link chain which can be regulated to ^j of a millimeter 

 [r millimeter=.0394 inch]. The machine is capable of a great 

 range of work, strips as small as s 5 5 of a millimeter being accu- 

 rately cut. When 

 the knife has made 

 the last cut on the 

 roll the machine 

 automatically dis- 

 connects itself 

 leaving the rolls 

 of tape ready for 

 removal and wrap- 

 ping. By means of 

 this machine, one 

 workman can at- 

 tend to five or six 

 of them at the 

 same time, which 

 insures a large 

 product. [Max 

 Miiller, Hannover- 

 Hainholz, Ger- 

 many.] 



eLAN VIEW 

 OF SURFACE OF PATTERN ROLL. 



