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Improvement in Braces and Wrenches - Carpentry & Building, Vol.5, 1883

The Smith & Egge Manufacturing Company, of Bridgeport, Conn., are offering an improved form of bit-brace, also a socket-wrench, the two embodying a common principle which possesses interest for our readers. The general appearance of these tools is clearly shown in Figs. 10 and 12, while sections showing their construction are given in Figs. 11 and 13.

The design of the manufacturers has been to produce something cheap in construction and at the same time effective for use. The clutch is formed by splitting the shank of the tool and placing between the two parts a thumb-wheel, the two ends of the spindle of which ere provided with right and left threads.

By this simple device the jaw of the clutch is very rapidly opened or shut, according to the direction in which the thumb-wheel is turned.

The application of this principle to the brace and socket-wrench is essentially the same, there being only a slight difference in detail, as may be seen by comparing Fig 11 with Fig. 13.

The recess in the clutch of the brace for grasping a bit is made in such a form as to take in the square shank, the clutch shutting down over the round part of the bit, thus making it secure in its position without liability of dropping out, even though the screw is not closed down tight.

The thumb-wheel of the clutch in the brace may be operated by bringing it in contact with the bench, thus enabling a mechanic to fasten the bit in position or withdraw it from the brace with ease and dispatch.


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