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Title: |
1872 Article-Cushman Chuck Co., Lathe Chucks, Part 2 |
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Source: |
Modern Machinery, V4, Mar 1872, pg. 56 |
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Insert Date: |
2/28/2017 7:47:16 PM |
Improved Lathe Chucks
We publish herewith illustrations of some new forms of lathe chucks manufactured by Mr. A. F. Cushman, of Hartford, Ct., which we think will be found to possess many important advantages over the older patterns now in use.
Fig. 1 is the improved lever scroll chuck. It is arranged with set screws in the horn of the jaw for trueing up the work and holding it extra tight. Fig. 2 is the patent geared scroll chuck, and represents the style made for screw machines. This is claimed by the manufacturer to be one of the most durable and handy chucks in the market. It is always ready for a wrench without taking hold of the belt and turning the chuck around after the lathe stops. It is a common fault in nearly all single geared chucks that the pinion will wear out before the other parts; in this form, however, if a pinion breaks, the chuck can be used until another pinion can be obtained. The interior view of this chuck is represented in Fig. 3, where the three pinions are shown. Fig. 4 illustrates the geared scroll chuck. As will be seen from the cut, it is operated with a key, and is constructed in the strongest and most durable manner. Fig. 5 shows the geared chuck with reverse jaws—a very useful arrangement of this valuable appendage to the lathe. Fig. 6 is the new patent drill chuck. It is small and compact, being only 2 inches in diameter, and holding drills from 1/64 to ½-inches. It can be used for chucking anything within its capacity. The principal parts are all made of steel, and are very strong and durable. Every part is made in a gauge, and can be replaced when worn out, and each piece be sure to fit. Fig. 1 is the new improved independent jaw chuck, having, as will be seen, four jaws. These chucks are the result of the long experience of the manufacturer put in practical form, and believed that they will prove of much utility in obviating many of the common faults in these articles. They are a new invention, but lately patented. We have no doubt but that they will meet with special favor from a large class of our readers interested in their use.
US Patent: 121,494
http://www.datamp.org/patents/displayPatent.php?number=121494&typeCode=0 |
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1872 Cushman Chuck Co., Lathe Chuck, Fig. 4
1872 Cushman Chuck Co., Lathe Chuck, Fig. 5
1872 Cushman Chuck Co., Lathe Chuck, Fig. 6
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